2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * Main Mesa data structures.
30 * Please try to mark derived values with a leading underscore ('_').
37 #include <stdint.h> /* uint32_t */
40 #include "main/glheader.h"
41 #include "main/config.h"
42 #include "glapi/glapi.h"
43 #include "math/m_matrix.h" /* GLmatrix */
44 #include "main/simple_list.h" /* struct simple_node */
45 #include "main/formats.h" /* MESA_FORMAT_COUNT */
54 * \name 64-bit extension of GLbitfield.
57 typedef GLuint64 GLbitfield64;
59 /** Set a single bit */
60 #define BITFIELD64_BIT(b) ((GLbitfield64)1 << (b))
61 /** Set all bits up to excluding bit b */
62 #define BITFIELD64_MASK(b) \
63 ((b) == 64 ? (~(GLbitfield64)0) : BITFIELD64_BIT(b) - 1)
64 /** Set count bits starting from bit b */
65 #define BITFIELD64_RANGE(b, count) \
66 (BITFIELD64_MASK((b) + (count)) & ~BITFIELD64_MASK(b))
70 * \name Some forward type declarations
73 struct _mesa_HashTable;
74 struct gl_attrib_node;
75 struct gl_list_extensions;
77 struct gl_program_cache;
78 struct gl_texture_object;
81 struct gl_uniform_storage;
82 struct prog_instruction;
83 struct gl_program_parameter_list;
90 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
91 #define PRIM_MAX GL_TRIANGLE_STRIP_ADJACENCY
92 #define PRIM_OUTSIDE_BEGIN_END (PRIM_MAX + 1)
93 #define PRIM_UNKNOWN (PRIM_MAX + 2)
98 * Indexes for vertex program attributes.
99 * GL_NV_vertex_program aliases generic attributes over the conventional
100 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
101 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
102 * generic attributes are distinct/separate).
107 VERT_ATTRIB_WEIGHT = 1,
108 VERT_ATTRIB_NORMAL = 2,
109 VERT_ATTRIB_COLOR0 = 3,
110 VERT_ATTRIB_COLOR1 = 4,
112 VERT_ATTRIB_COLOR_INDEX = 6,
113 VERT_ATTRIB_EDGEFLAG = 7,
114 VERT_ATTRIB_TEX0 = 8,
115 VERT_ATTRIB_TEX1 = 9,
116 VERT_ATTRIB_TEX2 = 10,
117 VERT_ATTRIB_TEX3 = 11,
118 VERT_ATTRIB_TEX4 = 12,
119 VERT_ATTRIB_TEX5 = 13,
120 VERT_ATTRIB_TEX6 = 14,
121 VERT_ATTRIB_TEX7 = 15,
122 VERT_ATTRIB_POINT_SIZE = 16,
123 VERT_ATTRIB_GENERIC0 = 17,
124 VERT_ATTRIB_GENERIC1 = 18,
125 VERT_ATTRIB_GENERIC2 = 19,
126 VERT_ATTRIB_GENERIC3 = 20,
127 VERT_ATTRIB_GENERIC4 = 21,
128 VERT_ATTRIB_GENERIC5 = 22,
129 VERT_ATTRIB_GENERIC6 = 23,
130 VERT_ATTRIB_GENERIC7 = 24,
131 VERT_ATTRIB_GENERIC8 = 25,
132 VERT_ATTRIB_GENERIC9 = 26,
133 VERT_ATTRIB_GENERIC10 = 27,
134 VERT_ATTRIB_GENERIC11 = 28,
135 VERT_ATTRIB_GENERIC12 = 29,
136 VERT_ATTRIB_GENERIC13 = 30,
137 VERT_ATTRIB_GENERIC14 = 31,
138 VERT_ATTRIB_GENERIC15 = 32,
143 * Symbolic constats to help iterating over
144 * specific blocks of vertex attributes.
147 * includes all fixed function attributes as well as
148 * the aliased GL_NV_vertex_program shader attributes.
150 * include the classic texture coordinate attributes.
151 * Is a subset of VERT_ATTRIB_FF.
152 * VERT_ATTRIB_GENERIC
153 * include the OpenGL 2.0+ GLSL generic shader attributes.
154 * These alias the generic GL_ARB_vertex_shader attributes.
156 #define VERT_ATTRIB_FF(i) (VERT_ATTRIB_POS + (i))
157 #define VERT_ATTRIB_FF_MAX VERT_ATTRIB_GENERIC0
159 #define VERT_ATTRIB_TEX(i) (VERT_ATTRIB_TEX0 + (i))
160 #define VERT_ATTRIB_TEX_MAX MAX_TEXTURE_COORD_UNITS
162 #define VERT_ATTRIB_GENERIC(i) (VERT_ATTRIB_GENERIC0 + (i))
163 #define VERT_ATTRIB_GENERIC_MAX MAX_VERTEX_GENERIC_ATTRIBS
166 * Bitflags for vertex attributes.
167 * These are used in bitfields in many places.
170 #define VERT_BIT_POS BITFIELD64_BIT(VERT_ATTRIB_POS)
171 #define VERT_BIT_WEIGHT BITFIELD64_BIT(VERT_ATTRIB_WEIGHT)
172 #define VERT_BIT_NORMAL BITFIELD64_BIT(VERT_ATTRIB_NORMAL)
173 #define VERT_BIT_COLOR0 BITFIELD64_BIT(VERT_ATTRIB_COLOR0)
174 #define VERT_BIT_COLOR1 BITFIELD64_BIT(VERT_ATTRIB_COLOR1)
175 #define VERT_BIT_FOG BITFIELD64_BIT(VERT_ATTRIB_FOG)
176 #define VERT_BIT_COLOR_INDEX BITFIELD64_BIT(VERT_ATTRIB_COLOR_INDEX)
177 #define VERT_BIT_EDGEFLAG BITFIELD64_BIT(VERT_ATTRIB_EDGEFLAG)
178 #define VERT_BIT_TEX0 BITFIELD64_BIT(VERT_ATTRIB_TEX0)
179 #define VERT_BIT_TEX1 BITFIELD64_BIT(VERT_ATTRIB_TEX1)
180 #define VERT_BIT_TEX2 BITFIELD64_BIT(VERT_ATTRIB_TEX2)
181 #define VERT_BIT_TEX3 BITFIELD64_BIT(VERT_ATTRIB_TEX3)
182 #define VERT_BIT_TEX4 BITFIELD64_BIT(VERT_ATTRIB_TEX4)
183 #define VERT_BIT_TEX5 BITFIELD64_BIT(VERT_ATTRIB_TEX5)
184 #define VERT_BIT_TEX6 BITFIELD64_BIT(VERT_ATTRIB_TEX6)
185 #define VERT_BIT_TEX7 BITFIELD64_BIT(VERT_ATTRIB_TEX7)
186 #define VERT_BIT_POINT_SIZE BITFIELD64_BIT(VERT_ATTRIB_POINT_SIZE)
187 #define VERT_BIT_GENERIC0 BITFIELD64_BIT(VERT_ATTRIB_GENERIC0)
189 #define VERT_BIT(i) BITFIELD64_BIT(i)
190 #define VERT_BIT_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_MAX)
192 #define VERT_BIT_FF(i) VERT_BIT(i)
193 #define VERT_BIT_FF_ALL BITFIELD64_RANGE(0, VERT_ATTRIB_FF_MAX)
194 #define VERT_BIT_TEX(i) VERT_BIT(VERT_ATTRIB_TEX(i))
195 #define VERT_BIT_TEX_ALL \
196 BITFIELD64_RANGE(VERT_ATTRIB_TEX(0), VERT_ATTRIB_TEX_MAX)
198 #define VERT_BIT_GENERIC(i) VERT_BIT(VERT_ATTRIB_GENERIC(i))
199 #define VERT_BIT_GENERIC_ALL \
200 BITFIELD64_RANGE(VERT_ATTRIB_GENERIC(0), VERT_ATTRIB_GENERIC_MAX)
205 * Indexes for vertex shader outputs, geometry shader inputs/outputs, and
206 * fragment shader inputs.
208 * Note that some of these values are not available to all pipeline stages.
210 * When this enum is updated, the following code must be updated too:
211 * - vertResults (in prog_print.c's arb_output_attrib_string())
212 * - fragAttribs (in prog_print.c's arb_input_attrib_string())
213 * - _mesa_varying_slot_in_fs()
218 VARYING_SLOT_COL0, /* COL0 and COL1 must be contiguous */
221 VARYING_SLOT_TEX0, /* TEX0-TEX7 must be contiguous */
229 VARYING_SLOT_PSIZ, /* Does not appear in FS */
230 VARYING_SLOT_BFC0, /* Does not appear in FS */
231 VARYING_SLOT_BFC1, /* Does not appear in FS */
232 VARYING_SLOT_EDGE, /* Does not appear in FS */
233 VARYING_SLOT_CLIP_VERTEX, /* Does not appear in FS */
234 VARYING_SLOT_CLIP_DIST0,
235 VARYING_SLOT_CLIP_DIST1,
236 VARYING_SLOT_PRIMITIVE_ID, /* Does not appear in VS */
237 VARYING_SLOT_LAYER, /* Appears as VS or GS output */
238 VARYING_SLOT_VIEWPORT, /* Appears as VS or GS output */
239 VARYING_SLOT_FACE, /* FS only */
240 VARYING_SLOT_PNTC, /* FS only */
241 VARYING_SLOT_VAR0, /* First generic varying slot */
242 VARYING_SLOT_MAX = VARYING_SLOT_VAR0 + MAX_VARYING
247 * Bitflags for varying slots.
250 #define VARYING_BIT_POS BITFIELD64_BIT(VARYING_SLOT_POS)
251 #define VARYING_BIT_COL0 BITFIELD64_BIT(VARYING_SLOT_COL0)
252 #define VARYING_BIT_COL1 BITFIELD64_BIT(VARYING_SLOT_COL1)
253 #define VARYING_BIT_FOGC BITFIELD64_BIT(VARYING_SLOT_FOGC)
254 #define VARYING_BIT_TEX0 BITFIELD64_BIT(VARYING_SLOT_TEX0)
255 #define VARYING_BIT_TEX1 BITFIELD64_BIT(VARYING_SLOT_TEX1)
256 #define VARYING_BIT_TEX2 BITFIELD64_BIT(VARYING_SLOT_TEX2)
257 #define VARYING_BIT_TEX3 BITFIELD64_BIT(VARYING_SLOT_TEX3)
258 #define VARYING_BIT_TEX4 BITFIELD64_BIT(VARYING_SLOT_TEX4)
259 #define VARYING_BIT_TEX5 BITFIELD64_BIT(VARYING_SLOT_TEX5)
260 #define VARYING_BIT_TEX6 BITFIELD64_BIT(VARYING_SLOT_TEX6)
261 #define VARYING_BIT_TEX7 BITFIELD64_BIT(VARYING_SLOT_TEX7)
262 #define VARYING_BIT_TEX(U) BITFIELD64_BIT(VARYING_SLOT_TEX0 + (U))
263 #define VARYING_BITS_TEX_ANY BITFIELD64_RANGE(VARYING_SLOT_TEX0, \
264 MAX_TEXTURE_COORD_UNITS)
265 #define VARYING_BIT_PSIZ BITFIELD64_BIT(VARYING_SLOT_PSIZ)
266 #define VARYING_BIT_BFC0 BITFIELD64_BIT(VARYING_SLOT_BFC0)
267 #define VARYING_BIT_BFC1 BITFIELD64_BIT(VARYING_SLOT_BFC1)
268 #define VARYING_BIT_EDGE BITFIELD64_BIT(VARYING_SLOT_EDGE)
269 #define VARYING_BIT_CLIP_VERTEX BITFIELD64_BIT(VARYING_SLOT_CLIP_VERTEX)
270 #define VARYING_BIT_CLIP_DIST0 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0)
271 #define VARYING_BIT_CLIP_DIST1 BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1)
272 #define VARYING_BIT_PRIMITIVE_ID BITFIELD64_BIT(VARYING_SLOT_PRIMITIVE_ID)
273 #define VARYING_BIT_LAYER BITFIELD64_BIT(VARYING_SLOT_LAYER)
274 #define VARYING_BIT_VIEWPORT BITFIELD64_BIT(VARYING_SLOT_VIEWPORT)
275 #define VARYING_BIT_FACE BITFIELD64_BIT(VARYING_SLOT_FACE)
276 #define VARYING_BIT_PNTC BITFIELD64_BIT(VARYING_SLOT_PNTC)
277 #define VARYING_BIT_VAR(V) BITFIELD64_BIT(VARYING_SLOT_VAR0 + (V))
281 * Bitflags for system values.
283 #define SYSTEM_BIT_SAMPLE_ID BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_ID)
284 #define SYSTEM_BIT_SAMPLE_POS BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_POS)
285 #define SYSTEM_BIT_SAMPLE_MASK_IN BITFIELD64_BIT(SYSTEM_VALUE_SAMPLE_MASK_IN)
288 * Determine if the given gl_varying_slot appears in the fragment shader.
290 static inline GLboolean
291 _mesa_varying_slot_in_fs(gl_varying_slot slot)
294 case VARYING_SLOT_PSIZ:
295 case VARYING_SLOT_BFC0:
296 case VARYING_SLOT_BFC1:
297 case VARYING_SLOT_EDGE:
298 case VARYING_SLOT_CLIP_VERTEX:
299 case VARYING_SLOT_LAYER:
308 * Fragment program results
312 FRAG_RESULT_DEPTH = 0,
313 FRAG_RESULT_STENCIL = 1,
314 /* If a single color should be written to all render targets, this
315 * register is written. No FRAG_RESULT_DATAn will be written.
317 FRAG_RESULT_COLOR = 2,
318 FRAG_RESULT_SAMPLE_MASK = 3,
320 /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
321 * or ARB_fragment_program fragment.color[n]) color results. If
322 * any are written, FRAG_RESULT_COLOR will not be written.
324 FRAG_RESULT_DATA0 = 4,
325 FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
330 * Indexes for all renderbuffers
334 /* the four standard color buffers */
342 /* optional aux buffer */
344 /* generic renderbuffers */
357 * Bit flags for all renderbuffers
359 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
360 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
361 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
362 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
363 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
364 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
365 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
366 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
367 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
368 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
369 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
370 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
371 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
372 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
373 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
374 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
375 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
376 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
377 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
380 * Mask of all the color buffer bits (but not accum).
382 #define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
383 BUFFER_BIT_BACK_LEFT | \
384 BUFFER_BIT_FRONT_RIGHT | \
385 BUFFER_BIT_BACK_RIGHT | \
387 BUFFER_BIT_COLOR0 | \
388 BUFFER_BIT_COLOR1 | \
389 BUFFER_BIT_COLOR2 | \
390 BUFFER_BIT_COLOR3 | \
391 BUFFER_BIT_COLOR4 | \
392 BUFFER_BIT_COLOR5 | \
393 BUFFER_BIT_COLOR6 | \
398 * Shader stages. Note that these will become 5 with tessellation.
400 * The order must match how shaders are ordered in the pipeline.
401 * The GLSL linker assumes that if i<j, then the j-th shader is
402 * executed later than the i-th shader.
406 MESA_SHADER_VERTEX = 0,
407 MESA_SHADER_GEOMETRY = 1,
408 MESA_SHADER_FRAGMENT = 2,
409 MESA_SHADER_COMPUTE = 3,
412 #define MESA_SHADER_STAGES (MESA_SHADER_COMPUTE + 1)
416 * Framebuffer configuration (aka visual / pixelformat)
417 * Note: some of these fields should be boolean, but it appears that
418 * code in drivers/dri/common/util.c requires int-sized fields.
424 GLboolean colorIndexMode; /* XXX is this used anywhere? */
425 GLuint doubleBufferMode;
428 GLboolean haveAccumBuffer;
429 GLboolean haveDepthBuffer;
430 GLboolean haveStencilBuffer;
432 GLint redBits, greenBits, blueBits, alphaBits; /* bits per comp */
433 GLuint redMask, greenMask, blueMask, alphaMask;
434 GLint rgbBits; /* total bits for rgb */
435 GLint indexBits; /* total bits for colorindex */
437 GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
445 /* EXT_visual_rating / GLX 1.2 */
448 /* EXT_visual_info / GLX 1.2 */
449 GLint transparentPixel;
450 /* colors are floats scaled to ints */
451 GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
452 GLint transparentIndex;
454 /* ARB_multisample / SGIS_multisample */
458 /* SGIX_pbuffer / GLX 1.3 */
459 GLint maxPbufferWidth;
460 GLint maxPbufferHeight;
461 GLint maxPbufferPixels;
462 GLint optimalPbufferWidth; /* Only for SGIX_pbuffer. */
463 GLint optimalPbufferHeight; /* Only for SGIX_pbuffer. */
465 /* OML_swap_method */
468 /* EXT_texture_from_pixmap */
469 GLint bindToTextureRgb;
470 GLint bindToTextureRgba;
471 GLint bindToMipmapTexture;
472 GLint bindToTextureTargets;
475 /* EXT_framebuffer_sRGB */
481 * \name Bit flags used for updating material values.
484 #define MAT_ATTRIB_FRONT_AMBIENT 0
485 #define MAT_ATTRIB_BACK_AMBIENT 1
486 #define MAT_ATTRIB_FRONT_DIFFUSE 2
487 #define MAT_ATTRIB_BACK_DIFFUSE 3
488 #define MAT_ATTRIB_FRONT_SPECULAR 4
489 #define MAT_ATTRIB_BACK_SPECULAR 5
490 #define MAT_ATTRIB_FRONT_EMISSION 6
491 #define MAT_ATTRIB_BACK_EMISSION 7
492 #define MAT_ATTRIB_FRONT_SHININESS 8
493 #define MAT_ATTRIB_BACK_SHININESS 9
494 #define MAT_ATTRIB_FRONT_INDEXES 10
495 #define MAT_ATTRIB_BACK_INDEXES 11
496 #define MAT_ATTRIB_MAX 12
498 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
499 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
500 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
501 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
502 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
503 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
505 #define MAT_INDEX_AMBIENT 0
506 #define MAT_INDEX_DIFFUSE 1
507 #define MAT_INDEX_SPECULAR 2
509 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
510 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
511 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
512 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
513 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
514 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
515 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
516 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
517 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
518 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
519 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
520 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
523 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
524 MAT_BIT_FRONT_AMBIENT | \
525 MAT_BIT_FRONT_DIFFUSE | \
526 MAT_BIT_FRONT_SPECULAR | \
527 MAT_BIT_FRONT_SHININESS | \
528 MAT_BIT_FRONT_INDEXES)
530 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
531 MAT_BIT_BACK_AMBIENT | \
532 MAT_BIT_BACK_DIFFUSE | \
533 MAT_BIT_BACK_SPECULAR | \
534 MAT_BIT_BACK_SHININESS | \
535 MAT_BIT_BACK_INDEXES)
537 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
546 GLfloat Attrib[MAT_ATTRIB_MAX][4];
554 #define LIGHT_SPOT 0x1
555 #define LIGHT_LOCAL_VIEWER 0x2
556 #define LIGHT_POSITIONAL 0x4
557 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
562 * Light source state.
566 struct gl_light *next; /**< double linked list with sentinel */
567 struct gl_light *prev;
569 GLfloat Ambient[4]; /**< ambient color */
570 GLfloat Diffuse[4]; /**< diffuse color */
571 GLfloat Specular[4]; /**< specular color */
572 GLfloat EyePosition[4]; /**< position in eye coordinates */
573 GLfloat SpotDirection[4]; /**< spotlight direction in eye coordinates */
574 GLfloat SpotExponent;
575 GLfloat SpotCutoff; /**< in degrees */
576 GLfloat _CosCutoff; /**< = MAX(0, cos(SpotCutoff)) */
577 GLfloat ConstantAttenuation;
578 GLfloat LinearAttenuation;
579 GLfloat QuadraticAttenuation;
580 GLboolean Enabled; /**< On/off flag */
583 * \name Derived fields
586 GLbitfield _Flags; /**< Mask of LIGHT_x bits defined above */
588 GLfloat _Position[4]; /**< position in eye/obj coordinates */
589 GLfloat _VP_inf_norm[3]; /**< Norm direction to infinite light */
590 GLfloat _h_inf_norm[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
591 GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
592 GLfloat _VP_inf_spot_attenuation;
594 GLfloat _MatAmbient[2][3]; /**< material ambient * light ambient */
595 GLfloat _MatDiffuse[2][3]; /**< material diffuse * light diffuse */
596 GLfloat _MatSpecular[2][3]; /**< material spec * light specular */
606 GLfloat Ambient[4]; /**< ambient color */
607 GLboolean LocalViewer; /**< Local (or infinite) view point? */
608 GLboolean TwoSide; /**< Two (or one) sided lighting? */
609 GLenum ColorControl; /**< either GL_SINGLE_COLOR
610 * or GL_SEPARATE_SPECULAR_COLOR */
615 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
617 struct gl_accum_attrib
619 GLfloat ClearColor[4]; /**< Accumulation buffer clear color */
624 * Used for storing clear color, texture border color, etc.
625 * The float values are typically unclamped.
636 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
638 struct gl_colorbuffer_attrib
640 GLuint ClearIndex; /**< Index for glClear */
641 union gl_color_union ClearColor; /**< Color for glClear, unclamped */
642 GLuint IndexMask; /**< Color index write mask */
643 GLubyte ColorMask[MAX_DRAW_BUFFERS][4]; /**< Each flag is 0xff or 0x0 */
645 GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
648 * \name alpha testing
651 GLboolean AlphaEnabled; /**< Alpha test enabled flag */
652 GLenum AlphaFunc; /**< Alpha test function */
653 GLfloat AlphaRefUnclamped;
654 GLclampf AlphaRef; /**< Alpha reference value */
661 GLbitfield BlendEnabled; /**< Per-buffer blend enable flags */
663 /* NOTE: this does _not_ depend on fragment clamping or any other clamping
664 * control, only on the fixed-pointness of the render target.
665 * The query does however depend on fragment color clamping.
667 GLfloat BlendColorUnclamped[4]; /**< Blending color */
668 GLfloat BlendColor[4]; /**< Blending color */
672 GLenum SrcRGB; /**< RGB blend source term */
673 GLenum DstRGB; /**< RGB blend dest term */
674 GLenum SrcA; /**< Alpha blend source term */
675 GLenum DstA; /**< Alpha blend dest term */
676 GLenum EquationRGB; /**< GL_ADD, GL_SUBTRACT, etc. */
677 GLenum EquationA; /**< GL_ADD, GL_SUBTRACT, etc. */
679 * Set if any blend factor uses SRC1. Computed at the time blend factors
682 GLboolean _UsesDualSrc;
683 } Blend[MAX_DRAW_BUFFERS];
684 /** Are the blend func terms currently different for each buffer/target? */
685 GLboolean _BlendFuncPerBuffer;
686 /** Are the blend equations currently different for each buffer/target? */
687 GLboolean _BlendEquationPerBuffer;
694 GLenum LogicOp; /**< Logic operator */
695 GLboolean IndexLogicOpEnabled; /**< Color index logic op enabled flag */
696 GLboolean ColorLogicOpEnabled; /**< RGBA logic op enabled flag */
699 GLboolean DitherFlag; /**< Dither enable flag */
701 GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
702 GLboolean _ClampFragmentColor; /** < with GL_FIXED_ONLY_ARB resolved */
703 GLenum ClampReadColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
705 GLboolean sRGBEnabled; /**< Framebuffer sRGB blending/updating requested */
710 * Current attribute group (GL_CURRENT_BIT).
712 struct gl_current_attrib
715 * \name Current vertex attributes.
716 * \note Values are valid only after FLUSH_VERTICES has been called.
717 * \note Index and Edgeflag current values are stored as floats in the
718 * SIX and SEVEN attribute slots.
720 GLfloat Attrib[VERT_ATTRIB_MAX][4]; /**< Position, color, texcoords, etc */
723 * \name Current raster position attributes (always valid).
724 * \note This set of attributes is very similar to the SWvertex struct.
727 GLfloat RasterPos[4];
728 GLfloat RasterDistance;
729 GLfloat RasterColor[4];
730 GLfloat RasterSecondaryColor[4];
731 GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
732 GLboolean RasterPosValid;
738 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
740 struct gl_depthbuffer_attrib
742 GLenum Func; /**< Function for depth buffer compare */
743 GLclampd Clear; /**< Value to clear depth buffer to */
744 GLboolean Test; /**< Depth buffering enabled flag */
745 GLboolean Mask; /**< Depth buffer writable? */
746 GLboolean BoundsTest; /**< GL_EXT_depth_bounds_test */
747 GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
752 * Evaluator attribute group (GL_EVAL_BIT).
754 struct gl_eval_attrib
760 GLboolean Map1Color4;
762 GLboolean Map1Normal;
763 GLboolean Map1TextureCoord1;
764 GLboolean Map1TextureCoord2;
765 GLboolean Map1TextureCoord3;
766 GLboolean Map1TextureCoord4;
767 GLboolean Map1Vertex3;
768 GLboolean Map1Vertex4;
769 GLboolean Map2Color4;
771 GLboolean Map2Normal;
772 GLboolean Map2TextureCoord1;
773 GLboolean Map2TextureCoord2;
774 GLboolean Map2TextureCoord3;
775 GLboolean Map2TextureCoord4;
776 GLboolean Map2Vertex3;
777 GLboolean Map2Vertex4;
778 GLboolean AutoNormal;
782 * \name Map Grid endpoints and divisions and calculated du values
786 GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
787 GLint MapGrid2un, MapGrid2vn;
788 GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
789 GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
795 * Fog attribute group (GL_FOG_BIT).
799 GLboolean Enabled; /**< Fog enabled flag */
800 GLfloat ColorUnclamped[4]; /**< Fog color */
801 GLfloat Color[4]; /**< Fog color */
802 GLfloat Density; /**< Density >= 0.0 */
803 GLfloat Start; /**< Start distance in eye coords */
804 GLfloat End; /**< End distance in eye coords */
805 GLfloat Index; /**< Fog index */
806 GLenum Mode; /**< Fog mode */
807 GLboolean ColorSumEnabled;
808 GLenum FogCoordinateSource; /**< GL_EXT_fog_coord */
809 GLfloat _Scale; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
810 GLenum FogDistanceMode; /**< GL_NV_fog_distance */
815 * Hint attribute group (GL_HINT_BIT).
817 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
819 struct gl_hint_attrib
821 GLenum PerspectiveCorrection;
824 GLenum PolygonSmooth;
826 GLenum TextureCompression; /**< GL_ARB_texture_compression */
827 GLenum GenerateMipmap; /**< GL_SGIS_generate_mipmap */
828 GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
833 * Lighting attribute group (GL_LIGHT_BIT).
835 struct gl_light_attrib
837 struct gl_light Light[MAX_LIGHTS]; /**< Array of light sources */
838 struct gl_lightmodel Model; /**< Lighting model */
841 * Front and back material values.
842 * Note: must call FLUSH_VERTICES() before using.
844 struct gl_material Material;
846 GLboolean Enabled; /**< Lighting enabled flag */
847 GLenum ShadeModel; /**< GL_FLAT or GL_SMOOTH */
848 GLenum ProvokingVertex; /**< GL_EXT_provoking_vertex */
849 GLenum ColorMaterialFace; /**< GL_FRONT, BACK or FRONT_AND_BACK */
850 GLenum ColorMaterialMode; /**< GL_AMBIENT, GL_DIFFUSE, etc */
851 GLbitfield _ColorMaterialBitmask; /**< bitmask formed from Face and Mode */
852 GLboolean ColorMaterialEnabled;
853 GLenum ClampVertexColor; /**< GL_TRUE, GL_FALSE, GL_FIXED_ONLY */
854 GLboolean _ClampVertexColor;
856 struct gl_light EnabledList; /**< List sentinel */
859 * Derived state for optimizations:
862 GLboolean _NeedEyeCoords;
863 GLboolean _NeedVertices; /**< Use fast shader? */
864 GLfloat _BaseColor[2][3];
870 * Line attribute group (GL_LINE_BIT).
872 struct gl_line_attrib
874 GLboolean SmoothFlag; /**< GL_LINE_SMOOTH enabled? */
875 GLboolean StippleFlag; /**< GL_LINE_STIPPLE enabled? */
876 GLushort StipplePattern; /**< Stipple pattern */
877 GLint StippleFactor; /**< Stipple repeat factor */
878 GLfloat Width; /**< Line width */
883 * Display list attribute group (GL_LIST_BIT).
885 struct gl_list_attrib
892 * Multisample attribute group (GL_MULTISAMPLE_BIT).
894 struct gl_multisample_attrib
897 GLboolean _Enabled; /**< true if Enabled and multisample buffer */
898 GLboolean SampleAlphaToCoverage;
899 GLboolean SampleAlphaToOne;
900 GLboolean SampleCoverage;
901 GLfloat SampleCoverageValue;
902 GLboolean SampleCoverageInvert;
903 GLboolean SampleShading;
904 GLfloat MinSampleShadingValue;
906 /* ARB_texture_multisample / GL3.2 additions */
907 GLboolean SampleMask;
908 /** The GL spec defines this as an array but >32x MSAA is madness */
909 GLbitfield SampleMaskValue;
914 * A pixelmap (see glPixelMap)
919 GLfloat Map[MAX_PIXEL_MAP_TABLE];
924 * Collection of all pixelmaps
928 struct gl_pixelmap RtoR; /**< i.e. GL_PIXEL_MAP_R_TO_R */
929 struct gl_pixelmap GtoG;
930 struct gl_pixelmap BtoB;
931 struct gl_pixelmap AtoA;
932 struct gl_pixelmap ItoR;
933 struct gl_pixelmap ItoG;
934 struct gl_pixelmap ItoB;
935 struct gl_pixelmap ItoA;
936 struct gl_pixelmap ItoI;
937 struct gl_pixelmap StoS;
942 * Pixel attribute group (GL_PIXEL_MODE_BIT).
944 struct gl_pixel_attrib
946 GLenum ReadBuffer; /**< source buffer for glRead/CopyPixels() */
948 /*--- Begin Pixel Transfer State ---*/
949 /* Fields are in the order in which they're applied... */
951 /** Scale & Bias (index shift, offset) */
953 GLfloat RedBias, RedScale;
954 GLfloat GreenBias, GreenScale;
955 GLfloat BlueBias, BlueScale;
956 GLfloat AlphaBias, AlphaScale;
957 GLfloat DepthBias, DepthScale;
958 GLint IndexShift, IndexOffset;
962 /* Note: actual pixel maps are not part of this attrib group */
963 GLboolean MapColorFlag;
964 GLboolean MapStencilFlag;
966 /*--- End Pixel Transfer State ---*/
969 GLfloat ZoomX, ZoomY;
974 * Point attribute group (GL_POINT_BIT).
976 struct gl_point_attrib
978 GLboolean SmoothFlag; /**< True if GL_POINT_SMOOTH is enabled */
979 GLfloat Size; /**< User-specified point size */
980 GLfloat Params[3]; /**< GL_EXT_point_parameters */
981 GLfloat MinSize, MaxSize; /**< GL_EXT_point_parameters */
982 GLfloat Threshold; /**< GL_EXT_point_parameters */
983 GLboolean _Attenuated; /**< True if Params != [1, 0, 0] */
984 GLboolean PointSprite; /**< GL_NV/ARB_point_sprite */
985 GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
986 GLenum SpriteRMode; /**< GL_NV_point_sprite (only!) */
987 GLenum SpriteOrigin; /**< GL_ARB_point_sprite */
992 * Polygon attribute group (GL_POLYGON_BIT).
994 struct gl_polygon_attrib
996 GLenum FrontFace; /**< Either GL_CW or GL_CCW */
997 GLenum FrontMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
998 GLenum BackMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
999 GLboolean _FrontBit; /**< 0=GL_CCW, 1=GL_CW */
1000 GLboolean CullFlag; /**< Culling on/off flag */
1001 GLboolean SmoothFlag; /**< True if GL_POLYGON_SMOOTH is enabled */
1002 GLboolean StippleFlag; /**< True if GL_POLYGON_STIPPLE is enabled */
1003 GLenum CullFaceMode; /**< Culling mode GL_FRONT or GL_BACK */
1004 GLfloat OffsetFactor; /**< Polygon offset factor, from user */
1005 GLfloat OffsetUnits; /**< Polygon offset units, from user */
1006 GLboolean OffsetPoint; /**< Offset in GL_POINT mode */
1007 GLboolean OffsetLine; /**< Offset in GL_LINE mode */
1008 GLboolean OffsetFill; /**< Offset in GL_FILL mode */
1013 * Scissor attributes (GL_SCISSOR_BIT).
1015 struct gl_scissor_rect
1017 GLint X, Y; /**< Lower left corner of box */
1018 GLsizei Width, Height; /**< Size of box */
1020 struct gl_scissor_attrib
1022 GLbitfield EnableFlags; /**< Scissor test enabled? */
1023 struct gl_scissor_rect ScissorArray[MAX_VIEWPORTS];
1028 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1030 * Three sets of stencil data are tracked so that OpenGL 2.0,
1031 * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1032 * simultaneously. In each of the stencil state arrays, element 0 corresponds
1033 * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
1034 * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
1035 * GL_EXT_stencil_two_side GL_BACK state.
1037 * The derived value \c _BackFace is either 1 or 2 depending on whether or
1038 * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1040 * The derived value \c _TestTwoSide is set when the front-face and back-face
1041 * stencil state are different.
1043 struct gl_stencil_attrib
1045 GLboolean Enabled; /**< Enabled flag */
1046 GLboolean TestTwoSide; /**< GL_EXT_stencil_two_side */
1047 GLubyte ActiveFace; /**< GL_EXT_stencil_two_side (0 or 2) */
1048 GLboolean _Enabled; /**< Enabled and stencil buffer present */
1049 GLboolean _WriteEnabled; /**< _Enabled and non-zero writemasks */
1050 GLboolean _TestTwoSide;
1051 GLubyte _BackFace; /**< Current back stencil state (1 or 2) */
1052 GLenum Function[3]; /**< Stencil function */
1053 GLenum FailFunc[3]; /**< Fail function */
1054 GLenum ZPassFunc[3]; /**< Depth buffer pass function */
1055 GLenum ZFailFunc[3]; /**< Depth buffer fail function */
1056 GLint Ref[3]; /**< Reference value */
1057 GLuint ValueMask[3]; /**< Value mask */
1058 GLuint WriteMask[3]; /**< Write mask */
1059 GLuint Clear; /**< Clear value */
1064 * An index for each type of texture object. These correspond to the GL
1065 * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1066 * Note: the order is from highest priority to lowest priority.
1070 TEXTURE_2D_MULTISAMPLE_INDEX,
1071 TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX,
1072 TEXTURE_CUBE_ARRAY_INDEX,
1073 TEXTURE_BUFFER_INDEX,
1074 TEXTURE_2D_ARRAY_INDEX,
1075 TEXTURE_1D_ARRAY_INDEX,
1076 TEXTURE_EXTERNAL_INDEX,
1087 * Bit flags for each type of texture object
1088 * Used for Texture.Unit[]._ReallyEnabled flags.
1091 #define TEXTURE_2D_MULTISAMPLE_BIT (1 << TEXTURE_2D_MULTISAMPLE_INDEX)
1092 #define TEXTURE_2D_MULTISAMPLE_ARRAY_BIT (1 << TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX)
1093 #define TEXTURE_CUBE_ARRAY_BIT (1 << TEXTURE_CUBE_ARRAY_INDEX)
1094 #define TEXTURE_BUFFER_BIT (1 << TEXTURE_BUFFER_INDEX)
1095 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1096 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1097 #define TEXTURE_EXTERNAL_BIT (1 << TEXTURE_EXTERNAL_INDEX)
1098 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1099 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1100 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1101 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1102 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1107 * Texture image state. Drivers will typically create a subclass of this
1108 * with extra fields for memory buffers, etc.
1110 struct gl_texture_image
1112 GLint InternalFormat; /**< Internal format as given by the user */
1113 GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1114 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1115 * GL_INTENSITY, GL_DEPTH_COMPONENT or
1116 * GL_DEPTH_STENCIL_EXT only. Used for
1117 * choosing TexEnv arithmetic.
1119 mesa_format TexFormat; /**< The actual texture memory format */
1121 GLuint Border; /**< 0 or 1 */
1122 GLuint Width; /**< = 2^WidthLog2 + 2*Border */
1123 GLuint Height; /**< = 2^HeightLog2 + 2*Border */
1124 GLuint Depth; /**< = 2^DepthLog2 + 2*Border */
1125 GLuint Width2; /**< = Width - 2*Border */
1126 GLuint Height2; /**< = Height - 2*Border */
1127 GLuint Depth2; /**< = Depth - 2*Border */
1128 GLuint WidthLog2; /**< = log2(Width2) */
1129 GLuint HeightLog2; /**< = log2(Height2) */
1130 GLuint DepthLog2; /**< = log2(Depth2) */
1131 GLuint MaxNumLevels; /**< = maximum possible number of mipmap
1132 levels, computed from the dimensions */
1134 struct gl_texture_object *TexObject; /**< Pointer back to parent object */
1135 GLuint Level; /**< Which mipmap level am I? */
1136 /** Cube map face: index into gl_texture_object::Image[] array */
1139 /** GL_ARB_texture_multisample */
1140 GLuint NumSamples; /**< Sample count, or 0 for non-multisample */
1141 GLboolean FixedSampleLocations; /**< Same sample locations for all pixels? */
1146 * Indexes for cube map faces.
1161 * Sampler object state. These objects are new with GL_ARB_sampler_objects
1162 * and OpenGL 3.3. Legacy texture objects also contain a sampler object.
1164 struct gl_sampler_object
1168 GLchar *Label; /**< GL_KHR_debug */
1170 GLenum WrapS; /**< S-axis texture image wrap mode */
1171 GLenum WrapT; /**< T-axis texture image wrap mode */
1172 GLenum WrapR; /**< R-axis texture image wrap mode */
1173 GLenum MinFilter; /**< minification filter */
1174 GLenum MagFilter; /**< magnification filter */
1175 union gl_color_union BorderColor; /**< Interpreted according to texture format */
1176 GLfloat MinLod; /**< min lambda, OpenGL 1.2 */
1177 GLfloat MaxLod; /**< max lambda, OpenGL 1.2 */
1178 GLfloat LodBias; /**< OpenGL 1.4 */
1179 GLfloat MaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
1180 GLenum CompareMode; /**< GL_ARB_shadow */
1181 GLenum CompareFunc; /**< GL_ARB_shadow */
1182 GLenum sRGBDecode; /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1183 GLboolean CubeMapSeamless; /**< GL_AMD_seamless_cubemap_per_texture */
1188 * Texture object state. Contains the array of mipmap images, border color,
1189 * wrap modes, filter modes, and shadow/texcompare state.
1191 struct gl_texture_object
1193 _glthread_Mutex Mutex; /**< for thread safety */
1194 GLint RefCount; /**< reference count */
1195 GLuint Name; /**< the user-visible texture object ID */
1196 GLchar *Label; /**< GL_KHR_debug */
1197 GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1199 struct gl_sampler_object Sampler;
1201 GLenum DepthMode; /**< GL_ARB_depth_texture */
1203 GLfloat Priority; /**< in [0,1] */
1204 GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */
1205 GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */
1206 GLint ImmutableLevels; /**< ES 3.0 / ARB_texture_view */
1207 GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */
1208 GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - p in spec) */
1209 GLint CropRect[4]; /**< GL_OES_draw_texture */
1210 GLenum Swizzle[4]; /**< GL_EXT_texture_swizzle */
1211 GLuint _Swizzle; /**< same as Swizzle, but SWIZZLE_* format */
1212 GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */
1213 GLboolean _BaseComplete; /**< Is the base texture level valid? */
1214 GLboolean _MipmapComplete; /**< Is the whole mipmap valid? */
1215 GLboolean _IsIntegerFormat; /**< Does the texture store integer values? */
1216 GLboolean _RenderToTexture; /**< Any rendering to this texture? */
1217 GLboolean Purgeable; /**< Is the buffer purgeable under memory
1219 GLboolean Immutable; /**< GL_ARB_texture_storage */
1221 GLuint MinLevel; /**< GL_ARB_texture_view */
1222 GLuint MinLayer; /**< GL_ARB_texture_view */
1223 GLuint NumLevels; /**< GL_ARB_texture_view */
1224 GLuint NumLayers; /**< GL_ARB_texture_view */
1226 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1227 struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1229 /** GL_ARB_texture_buffer_object */
1230 struct gl_buffer_object *BufferObject;
1231 GLenum BufferObjectFormat;
1232 /** Equivalent Mesa format for BufferObjectFormat. */
1233 mesa_format _BufferObjectFormat;
1234 /** GL_ARB_texture_buffer_range */
1235 GLintptr BufferOffset;
1236 GLsizeiptr BufferSize; /**< if this is -1, use BufferObject->Size instead */
1238 /** GL_OES_EGL_image_external */
1239 GLint RequiredTextureImageUnits;
1241 /** GL_ARB_shader_image_load_store */
1242 GLenum ImageFormatCompatibilityType;
1246 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1247 #define MAX_COMBINER_TERMS 4
1251 * Texture combine environment state.
1253 struct gl_tex_env_combine_state
1255 GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1256 GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1257 /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1258 GLenum SourceRGB[MAX_COMBINER_TERMS];
1259 GLenum SourceA[MAX_COMBINER_TERMS];
1260 /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1261 GLenum OperandRGB[MAX_COMBINER_TERMS];
1262 GLenum OperandA[MAX_COMBINER_TERMS];
1263 GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1264 GLuint ScaleShiftA; /**< 0, 1 or 2 */
1265 GLuint _NumArgsRGB; /**< Number of inputs used for the RGB combiner */
1266 GLuint _NumArgsA; /**< Number of inputs used for the A combiner */
1271 * TexGenEnabled flags.
1278 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1283 * Bit flag versions of the corresponding GL_ constants.
1286 #define TEXGEN_SPHERE_MAP 0x1
1287 #define TEXGEN_OBJ_LINEAR 0x2
1288 #define TEXGEN_EYE_LINEAR 0x4
1289 #define TEXGEN_REFLECTION_MAP_NV 0x8
1290 #define TEXGEN_NORMAL_MAP_NV 0x10
1292 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1293 TEXGEN_REFLECTION_MAP_NV | \
1294 TEXGEN_NORMAL_MAP_NV)
1295 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1296 TEXGEN_REFLECTION_MAP_NV | \
1297 TEXGEN_NORMAL_MAP_NV | \
1303 /** Tex-gen enabled for texture unit? */
1304 #define ENABLE_TEXGEN(unit) (1 << (unit))
1306 /** Non-identity texture matrix for texture unit? */
1307 #define ENABLE_TEXMAT(unit) (1 << (unit))
1311 * Texture coord generation state.
1315 GLenum Mode; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1316 GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
1317 GLfloat ObjectPlane[4];
1318 GLfloat EyePlane[4];
1323 * Texture unit state. Contains enable flags, texture environment/function/
1324 * combiners, texgen state, and pointers to current texture objects.
1326 struct gl_texture_unit
1328 GLbitfield Enabled; /**< bitmask of TEXTURE_*_BIT flags */
1329 GLbitfield _ReallyEnabled; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1331 GLenum EnvMode; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1332 GLclampf EnvColor[4];
1333 GLfloat EnvColorUnclamped[4];
1335 struct gl_texgen GenS;
1336 struct gl_texgen GenT;
1337 struct gl_texgen GenR;
1338 struct gl_texgen GenQ;
1339 GLbitfield TexGenEnabled; /**< Bitwise-OR of [STRQ]_BIT values */
1340 GLbitfield _GenFlags; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1342 GLfloat LodBias; /**< for biasing mipmap levels */
1344 GLfloat RotMatrix[4]; /* 2x2 matrix */
1346 /** Current sampler object (GL_ARB_sampler_objects) */
1347 struct gl_sampler_object *Sampler;
1350 * \name GL_EXT_texture_env_combine
1352 struct gl_tex_env_combine_state Combine;
1355 * Derived state based on \c EnvMode and the \c BaseFormat of the
1356 * currently enabled texture.
1358 struct gl_tex_env_combine_state _EnvMode;
1361 * Currently enabled combiner state. This will point to either
1362 * \c Combine or \c _EnvMode.
1364 struct gl_tex_env_combine_state *_CurrentCombine;
1366 /** Current texture object pointers */
1367 struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
1369 /** Points to highest priority, complete and enabled texture object */
1370 struct gl_texture_object *_Current;
1375 * Texture attribute group (GL_TEXTURE_BIT).
1377 struct gl_texture_attrib
1379 GLuint CurrentUnit; /**< GL_ACTIVE_TEXTURE */
1380 struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
1382 struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
1384 /** GL_ARB_texture_buffer_object */
1385 struct gl_buffer_object *BufferObject;
1387 /** GL_ARB_seamless_cubemap */
1388 GLboolean CubeMapSeamless;
1390 /** Texture units/samplers used by vertex or fragment texturing */
1391 GLbitfield _EnabledUnits;
1393 /** Texture coord units/sets used for fragment texturing */
1394 GLbitfield _EnabledCoordUnits;
1396 /** Texture coord units that have texgen enabled */
1397 GLbitfield _TexGenEnabled;
1399 /** Texture coord units that have non-identity matrices */
1400 GLbitfield _TexMatEnabled;
1402 /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1403 GLbitfield _GenFlags;
1408 * Data structure representing a single clip plane (e.g. one of the elements
1409 * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1411 typedef GLfloat gl_clip_plane[4];
1415 * Transformation attribute group (GL_TRANSFORM_BIT).
1417 struct gl_transform_attrib
1419 GLenum MatrixMode; /**< Matrix mode */
1420 gl_clip_plane EyeUserPlane[MAX_CLIP_PLANES]; /**< User clip planes */
1421 gl_clip_plane _ClipUserPlane[MAX_CLIP_PLANES]; /**< derived */
1422 GLbitfield ClipPlanesEnabled; /**< on/off bitmask */
1423 GLboolean Normalize; /**< Normalize all normals? */
1424 GLboolean RescaleNormals; /**< GL_EXT_rescale_normal */
1425 GLboolean RasterPositionUnclipped; /**< GL_IBM_rasterpos_clip */
1426 GLboolean DepthClamp; /**< GL_ARB_depth_clamp */
1431 * Viewport attribute group (GL_VIEWPORT_BIT).
1433 struct gl_viewport_attrib
1435 GLfloat X, Y; /**< position */
1436 GLfloat Width, Height; /**< size */
1437 GLdouble Near, Far; /**< Depth buffer range */
1438 GLmatrix _WindowMap; /**< Mapping transformation as a matrix. */
1443 * GL_ARB_vertex/pixel_buffer_object buffer object
1445 struct gl_buffer_object
1447 _glthread_Mutex Mutex;
1450 GLchar *Label; /**< GL_KHR_debug */
1451 GLenum Usage; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1452 GLsizeiptrARB Size; /**< Size of buffer storage in bytes */
1453 GLubyte *Data; /**< Location of storage either in RAM or VRAM. */
1454 /** Fields describing a mapped buffer */
1456 GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
1457 GLvoid *Pointer; /**< User-space address of mapping */
1458 GLintptr Offset; /**< Mapped offset */
1459 GLsizeiptr Length; /**< Mapped length */
1461 GLboolean DeletePending; /**< true if buffer object is removed from the hash */
1462 GLboolean Written; /**< Ever written to? (for debugging) */
1463 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
1468 * Client pixel packing/unpacking attributes
1470 struct gl_pixelstore_attrib
1478 GLboolean SwapBytes;
1480 GLboolean Invert; /**< GL_MESA_pack_invert */
1481 struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1486 * Client vertex array attributes
1488 struct gl_client_array
1490 GLint Size; /**< components per element (1,2,3,4) */
1491 GLenum Type; /**< datatype: GL_FLOAT, GL_INT, etc */
1492 GLenum Format; /**< default: GL_RGBA, but may be GL_BGRA */
1493 GLsizei Stride; /**< user-specified stride */
1494 GLsizei StrideB; /**< actual stride in bytes */
1495 const GLubyte *Ptr; /**< Points to array data */
1496 GLboolean Enabled; /**< Enabled flag is a boolean */
1497 GLboolean Normalized; /**< GL_ARB_vertex_program */
1498 GLboolean Integer; /**< Integer-valued? */
1499 GLuint InstanceDivisor; /**< GL_ARB_instanced_arrays */
1500 GLuint _ElementSize; /**< size of each element in bytes */
1502 struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
1503 GLuint _MaxElement; /**< max element index into array buffer + 1 */
1508 * Vertex attribute array as seen by the client.
1510 * Contains the size, type, format and normalization flag,
1511 * along with the index of a vertex buffer binding point.
1513 * Note that the Stride field corresponds to VERTEX_ATTRIB_ARRAY_STRIDE
1514 * and is only present for backwards compatibility reasons.
1515 * Rendering always uses VERTEX_BINDING_STRIDE.
1516 * The gl*Pointer() functions will set VERTEX_ATTRIB_ARRAY_STRIDE
1517 * and VERTEX_BINDING_STRIDE to the same value, while
1518 * glBindVertexBuffer() will only set VERTEX_BINDING_STRIDE.
1520 struct gl_vertex_attrib_array
1522 GLint Size; /**< Components per element (1,2,3,4) */
1523 GLenum Type; /**< Datatype: GL_FLOAT, GL_INT, etc */
1524 GLenum Format; /**< Default: GL_RGBA, but may be GL_BGRA */
1525 GLsizei Stride; /**< Stride as specified with gl*Pointer() */
1526 const GLubyte *Ptr; /**< Points to client array data. Not used when a VBO is bound */
1527 GLintptr RelativeOffset; /**< Offset of the first element relative to the binding offset */
1528 GLboolean Enabled; /**< Whether the array is enabled */
1529 GLboolean Normalized; /**< Fixed-point values are normalized when converted to floats */
1530 GLboolean Integer; /**< Fixed-point values are not converted to floats */
1531 GLuint _ElementSize; /**< Size of each element in bytes */
1532 GLuint VertexBinding; /**< Vertex buffer binding */
1537 * This describes the buffer object used for a vertex array (or
1538 * multiple vertex arrays). If BufferObj points to the default/null
1539 * buffer object, then the vertex array lives in user memory and not a VBO.
1541 struct gl_vertex_buffer_binding
1543 GLintptr Offset; /**< User-specified offset */
1544 GLsizei Stride; /**< User-specified stride */
1545 GLuint InstanceDivisor; /**< GL_ARB_instanced_arrays */
1546 struct gl_buffer_object *BufferObj; /**< GL_ARB_vertex_buffer_object */
1547 GLbitfield64 _BoundArrays; /**< Arrays bound to this binding point */
1552 * A representation of "Vertex Array Objects" (VAOs) from OpenGL 3.1+,
1553 * GL_ARB_vertex_array_object, or the original GL_APPLE_vertex_array_object
1556 struct gl_vertex_array_object
1558 /** Name of the VAO as received from glGenVertexArray. */
1560 GLchar *Label; /**< GL_KHR_debug */
1563 _glthread_Mutex Mutex;
1566 * Does the VAO use ARB semantics or Apple semantics?
1568 * There are several ways in which ARB_vertex_array_object and
1569 * APPLE_vertex_array_object VAOs have differing semantics. At the very
1572 * - ARB VAOs require that all array data be sourced from vertex buffer
1573 * objects, but Apple VAOs do not.
1575 * - ARB VAOs require that names come from GenVertexArrays.
1577 * This flag notes which behavior governs this VAO.
1579 GLboolean ARBsemantics;
1582 * Has this array object been bound?
1584 GLboolean EverBound;
1587 * Derived vertex attribute arrays
1589 * This is a legacy data structure created from gl_vertex_attrib_array and
1590 * gl_vertex_buffer_binding, for compatibility with existing driver code.
1592 struct gl_client_array _VertexAttrib[VERT_ATTRIB_MAX];
1594 /** Vertex attribute arrays */
1595 struct gl_vertex_attrib_array VertexAttrib[VERT_ATTRIB_MAX];
1597 /** Vertex buffer bindings */
1598 struct gl_vertex_buffer_binding VertexBinding[VERT_ATTRIB_MAX];
1600 /** Mask of VERT_BIT_* values indicating which arrays are enabled */
1601 GLbitfield64 _Enabled;
1603 /** Mask of VERT_BIT_* values indicating changed/dirty arrays */
1604 GLbitfield64 NewArrays;
1607 * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
1608 * we can determine the max legal (in bounds) glDrawElements array index.
1612 /** The index buffer (also known as the element array buffer in OpenGL). */
1613 struct gl_buffer_object *IndexBufferObj;
1618 * Vertex array state
1620 struct gl_array_attrib
1622 /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1623 struct gl_vertex_array_object *VAO;
1625 /** The default vertex array object */
1626 struct gl_vertex_array_object *DefaultVAO;
1628 /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1629 struct _mesa_HashTable *Objects;
1631 GLint ActiveTexture; /**< Client Active Texture */
1632 GLuint LockFirst; /**< GL_EXT_compiled_vertex_array */
1633 GLuint LockCount; /**< GL_EXT_compiled_vertex_array */
1636 * \name Primitive restart controls
1638 * Primitive restart is enabled if either \c PrimitiveRestart or
1639 * \c PrimitiveRestartFixedIndex is set.
1642 GLboolean PrimitiveRestart;
1643 GLboolean PrimitiveRestartFixedIndex;
1644 GLboolean _PrimitiveRestart;
1645 GLuint RestartIndex;
1648 /* GL_ARB_vertex_buffer_object */
1649 struct gl_buffer_object *ArrayBufferObj;
1652 * Vertex arrays as consumed by a driver.
1653 * The array pointer is set up only by the VBO module.
1655 const struct gl_client_array **_DrawArrays; /**< 0..VERT_ATTRIB_MAX-1 */
1660 * Feedback buffer state
1665 GLbitfield _Mask; /**< FB_* bits */
1673 * Selection buffer state
1677 GLuint *Buffer; /**< selection buffer */
1678 GLuint BufferSize; /**< size of the selection buffer */
1679 GLuint BufferCount; /**< number of values in the selection buffer */
1680 GLuint Hits; /**< number of records in the selection buffer */
1681 GLuint NameStackDepth; /**< name stack depth */
1682 GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1683 GLboolean HitFlag; /**< hit flag */
1684 GLfloat HitMinZ; /**< minimum hit depth */
1685 GLfloat HitMaxZ; /**< maximum hit depth */
1690 * 1-D Evaluator control points
1694 GLuint Order; /**< Number of control points */
1695 GLfloat u1, u2, du; /**< u1, u2, 1.0/(u2-u1) */
1696 GLfloat *Points; /**< Points to contiguous control points */
1701 * 2-D Evaluator control points
1705 GLuint Uorder; /**< Number of control points in U dimension */
1706 GLuint Vorder; /**< Number of control points in V dimension */
1709 GLfloat *Points; /**< Points to contiguous control points */
1714 * All evaluator control point state
1716 struct gl_evaluators
1722 struct gl_1d_map Map1Vertex3;
1723 struct gl_1d_map Map1Vertex4;
1724 struct gl_1d_map Map1Index;
1725 struct gl_1d_map Map1Color4;
1726 struct gl_1d_map Map1Normal;
1727 struct gl_1d_map Map1Texture1;
1728 struct gl_1d_map Map1Texture2;
1729 struct gl_1d_map Map1Texture3;
1730 struct gl_1d_map Map1Texture4;
1737 struct gl_2d_map Map2Vertex3;
1738 struct gl_2d_map Map2Vertex4;
1739 struct gl_2d_map Map2Index;
1740 struct gl_2d_map Map2Color4;
1741 struct gl_2d_map Map2Normal;
1742 struct gl_2d_map Map2Texture1;
1743 struct gl_2d_map Map2Texture2;
1744 struct gl_2d_map Map2Texture3;
1745 struct gl_2d_map Map2Texture4;
1750 struct gl_transform_feedback_varying_info
1759 * Per-output info vertex shaders for transform feedback.
1761 struct gl_transform_feedback_output
1763 unsigned OutputRegister;
1764 unsigned OutputBuffer;
1765 unsigned NumComponents;
1767 /** offset (in DWORDs) of this output within the interleaved structure */
1771 * Offset into the output register of the data to output. For example,
1772 * if NumComponents is 2 and ComponentOffset is 1, then the data to
1773 * offset is in the y and z components of the output register.
1775 unsigned ComponentOffset;
1779 /** Post-link transform feedback info. */
1780 struct gl_transform_feedback_info
1782 unsigned NumOutputs;
1785 * Number of transform feedback buffers in use by this program.
1787 unsigned NumBuffers;
1789 struct gl_transform_feedback_output *Outputs;
1791 /** Transform feedback varyings used for the linking of this shader program.
1793 * Use for glGetTransformFeedbackVarying().
1795 struct gl_transform_feedback_varying_info *Varyings;
1799 * Total number of components stored in each buffer. This may be used by
1800 * hardware back-ends to determine the correct stride when interleaving
1801 * multiple transform feedback outputs in the same buffer.
1803 unsigned BufferStride[MAX_FEEDBACK_BUFFERS];
1808 * Transform feedback object state
1810 struct gl_transform_feedback_object
1812 GLuint Name; /**< AKA the object ID */
1813 GLchar *Label; /**< GL_KHR_debug */
1815 GLboolean Active; /**< Is transform feedback enabled? */
1816 GLboolean Paused; /**< Is transform feedback paused? */
1817 GLboolean EndedAnytime; /**< Has EndTransformFeedback been called
1819 GLboolean EverBound; /**< Has this object been bound? */
1822 * The shader program active when BeginTransformFeedback() was called.
1823 * When active and unpaused, this equals ctx->Shader.CurrentProgram[stage],
1824 * where stage is the pipeline stage that is the source of data for
1825 * transform feedback.
1827 struct gl_shader_program *shader_program;
1830 * GLES: if Active is true, remaining number of primitives which can be
1831 * rendered without overflow. This is necessary to track because GLES
1832 * requires us to generate INVALID_OPERATION if a call to glDrawArrays or
1833 * glDrawArraysInstanced would overflow transform feedback buffers.
1834 * Undefined if Active is false.
1836 * Not tracked for desktop GL since it's unnecessary.
1838 unsigned GlesRemainingPrims;
1840 /** The feedback buffers */
1841 GLuint BufferNames[MAX_FEEDBACK_BUFFERS];
1842 struct gl_buffer_object *Buffers[MAX_FEEDBACK_BUFFERS];
1844 /** Start of feedback data in dest buffer */
1845 GLintptr Offset[MAX_FEEDBACK_BUFFERS];
1848 * Max data to put into dest buffer (in bytes). Computed based on
1849 * RequestedSize and the actual size of the buffer.
1851 GLsizeiptr Size[MAX_FEEDBACK_BUFFERS];
1854 * Size that was specified when the buffer was bound. If the buffer was
1855 * bound with glBindBufferBase() or glBindBufferOffsetEXT(), this value is
1858 GLsizeiptr RequestedSize[MAX_FEEDBACK_BUFFERS];
1863 * Context state for transform feedback.
1865 struct gl_transform_feedback_state
1867 GLenum Mode; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
1869 /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
1870 struct gl_buffer_object *CurrentBuffer;
1872 /** The table of all transform feedback objects */
1873 struct _mesa_HashTable *Objects;
1875 /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
1876 struct gl_transform_feedback_object *CurrentObject;
1878 /** The default xform-fb object (Name==0) */
1879 struct gl_transform_feedback_object *DefaultObject;
1884 * A "performance monitor" as described in AMD_performance_monitor.
1886 struct gl_perf_monitor_object
1890 /** True if the monitor is currently active (Begin called but not End). */
1894 * True if the monitor has ended.
1896 * This is distinct from !Active because it may never have began.
1901 * A list of groups with currently active counters.
1903 * ActiveGroups[g] == n if there are n counters active from group 'g'.
1905 unsigned *ActiveGroups;
1908 * An array of bitsets, subscripted by group ID, then indexed by counter ID.
1910 * Checking whether counter 'c' in group 'g' is active can be done via:
1912 * BITSET_TEST(ActiveCounters[g], c)
1914 GLuint **ActiveCounters;
1918 union gl_perf_monitor_counter_value
1926 struct gl_perf_monitor_counter
1928 /** Human readable name for the counter. */
1932 * Data type of the counter. Valid values are FLOAT, UNSIGNED_INT,
1933 * UNSIGNED_INT64_AMD, and PERCENTAGE_AMD.
1937 /** Minimum counter value. */
1938 union gl_perf_monitor_counter_value Minimum;
1940 /** Maximum counter value. */
1941 union gl_perf_monitor_counter_value Maximum;
1945 struct gl_perf_monitor_group
1947 /** Human readable name for the group. */
1951 * Maximum number of counters in this group which can be active at the
1954 GLuint MaxActiveCounters;
1956 /** Array of counters within this group. */
1957 const struct gl_perf_monitor_counter *Counters;
1963 * Context state for AMD_performance_monitor.
1965 struct gl_perf_monitor_state
1967 /** Array of performance monitor groups (indexed by group ID) */
1968 const struct gl_perf_monitor_group *Groups;
1971 /** The table of all performance monitors. */
1972 struct _mesa_HashTable *Monitors;
1977 * Names of the various vertex/fragment program register files, etc.
1979 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1980 * All values should fit in a 4-bit field.
1982 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
1983 * considered to be "uniform" variables since they can only be set outside
1984 * glBegin/End. They're also all stored in the same Parameters array.
1988 PROGRAM_TEMPORARY, /**< machine->Temporary[] */
1989 PROGRAM_ARRAY, /**< Arrays & Matrixes */
1990 PROGRAM_INPUT, /**< machine->Inputs[] */
1991 PROGRAM_OUTPUT, /**< machine->Outputs[] */
1992 PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
1993 PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
1994 PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
1995 PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
1996 PROGRAM_ADDRESS, /**< machine->AddressReg */
1997 PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */
1998 PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
1999 PROGRAM_UNDEFINED, /**< Invalid/TBD value */
2005 * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
2006 * one of these values.
2010 SYSTEM_VALUE_FRONT_FACE, /**< Fragment shader only (not done yet) */
2011 SYSTEM_VALUE_VERTEX_ID, /**< Vertex shader only */
2012 SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */
2013 SYSTEM_VALUE_SAMPLE_ID, /**< Fragment shader only */
2014 SYSTEM_VALUE_SAMPLE_POS, /**< Fragment shader only */
2015 SYSTEM_VALUE_SAMPLE_MASK_IN, /**< Fragment shader only */
2016 SYSTEM_VALUE_MAX /**< Number of values */
2021 * The possible interpolation qualifiers that can be applied to a fragment
2022 * shader input in GLSL.
2024 * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
2025 * gl_fragment_program data structure to 0 causes the default behavior.
2027 enum glsl_interp_qualifier
2029 INTERP_QUALIFIER_NONE = 0,
2030 INTERP_QUALIFIER_SMOOTH,
2031 INTERP_QUALIFIER_FLAT,
2032 INTERP_QUALIFIER_NOPERSPECTIVE,
2033 INTERP_QUALIFIER_COUNT /**< Number of interpolation qualifiers */
2038 * \brief Layout qualifiers for gl_FragDepth.
2040 * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
2041 * a layout qualifier.
2043 * \see enum ir_depth_layout
2045 enum gl_frag_depth_layout
2047 FRAG_DEPTH_LAYOUT_NONE, /**< No layout is specified. */
2048 FRAG_DEPTH_LAYOUT_ANY,
2049 FRAG_DEPTH_LAYOUT_GREATER,
2050 FRAG_DEPTH_LAYOUT_LESS,
2051 FRAG_DEPTH_LAYOUT_UNCHANGED
2056 * Base class for any kind of program object
2061 GLubyte *String; /**< Null-terminated program text */
2063 GLenum Target; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_GEOMETRY_PROGRAM_NV */
2064 GLenum Format; /**< String encoding format */
2066 struct prog_instruction *Instructions;
2068 GLbitfield64 InputsRead; /**< Bitmask of which input regs are read */
2069 GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
2070 GLbitfield SystemValuesRead; /**< Bitmask of SYSTEM_VALUE_x inputs used */
2071 GLbitfield InputFlags[MAX_PROGRAM_INPUTS]; /**< PROG_PARAM_BIT_x flags */
2072 GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
2073 GLbitfield TexturesUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS]; /**< TEXTURE_x_BIT bitmask */
2074 GLbitfield SamplersUsed; /**< Bitfield of which samplers are used */
2075 GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
2077 GLboolean UsesGather; /**< Does this program use gather4 at all? */
2080 * For vertex and geometry shaders, true if the program uses the
2081 * gl_ClipDistance output. Ignored for fragment shaders.
2083 GLboolean UsesClipDistanceOut;
2086 /** Named parameters, constants, etc. from program text */
2087 struct gl_program_parameter_list *Parameters;
2090 * Local parameters used by the program.
2092 * It's dynamically allocated because it is rarely used (just
2093 * assembly-style programs), and MAX_PROGRAM_LOCAL_PARAMS entries once it's
2096 GLfloat (*LocalParams)[4];
2098 /** Map from sampler unit to texture unit (set by glUniform1i()) */
2099 GLubyte SamplerUnits[MAX_SAMPLERS];
2101 /** Bitmask of which register files are read/written with indirect
2102 * addressing. Mask of (1 << PROGRAM_x) bits.
2104 GLbitfield IndirectRegisterFiles;
2106 /** Logical counts */
2108 GLuint NumInstructions;
2109 GLuint NumTemporaries;
2110 GLuint NumParameters;
2111 GLuint NumAttributes;
2112 GLuint NumAddressRegs;
2113 GLuint NumAluInstructions;
2114 GLuint NumTexInstructions;
2115 GLuint NumTexIndirections;
2117 /** Native, actual h/w counts */
2119 GLuint NumNativeInstructions;
2120 GLuint NumNativeTemporaries;
2121 GLuint NumNativeParameters;
2122 GLuint NumNativeAttributes;
2123 GLuint NumNativeAddressRegs;
2124 GLuint NumNativeAluInstructions;
2125 GLuint NumNativeTexInstructions;
2126 GLuint NumNativeTexIndirections;
2131 /** Vertex program object */
2132 struct gl_vertex_program
2134 struct gl_program Base; /**< base class */
2135 GLboolean IsPositionInvariant;
2139 /** Geometry program object */
2140 struct gl_geometry_program
2142 struct gl_program Base; /**< base class */
2146 GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2147 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2148 GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2149 GLboolean UsesEndPrimitive;
2153 /** Fragment program object */
2154 struct gl_fragment_program
2156 struct gl_program Base; /**< base class */
2157 GLboolean UsesKill; /**< shader uses KIL instruction */
2158 GLboolean UsesDFdy; /**< shader uses DDY instruction */
2159 GLboolean OriginUpperLeft;
2160 GLboolean PixelCenterInteger;
2161 enum gl_frag_depth_layout FragDepthLayout;
2164 * GLSL interpolation qualifier associated with each fragment shader input.
2165 * For inputs that do not have an interpolation qualifier specified in
2166 * GLSL, the value is INTERP_QUALIFIER_NONE.
2168 enum glsl_interp_qualifier InterpQualifier[VARYING_SLOT_MAX];
2171 * Bitfield indicating, for each fragment shader input, 1 if that input
2172 * uses centroid interpolation, 0 otherwise. Unused inputs are 0.
2174 GLbitfield64 IsCentroid;
2177 * Bitfield indicating, for each fragment shader input, 1 if that input
2178 * uses sample interpolation, 0 otherwise. Unused inputs are 0.
2180 GLbitfield64 IsSample;
2184 /** Compute program object */
2185 struct gl_compute_program
2187 struct gl_program Base; /**< base class */
2192 * State common to vertex and fragment programs.
2194 struct gl_program_state
2196 GLint ErrorPos; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
2197 const char *ErrorString; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
2202 * Context state for vertex programs.
2204 struct gl_vertex_program_state
2206 GLboolean Enabled; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
2207 GLboolean _Enabled; /**< Enabled and _valid_ user program? */
2208 GLboolean PointSizeEnabled; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
2209 GLboolean TwoSideEnabled; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
2210 /** Computed two sided lighting for fixed function/programs. */
2211 GLboolean _TwoSideEnabled;
2212 struct gl_vertex_program *Current; /**< User-bound vertex program */
2214 /** Currently enabled and valid vertex program (including internal
2215 * programs, user-defined vertex programs and GLSL vertex shaders).
2216 * This is the program we must use when rendering.
2218 struct gl_vertex_program *_Current;
2220 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2222 /** Should fixed-function T&L be implemented with a vertex prog? */
2223 GLboolean _MaintainTnlProgram;
2225 /** Program to emulate fixed-function T&L (see above) */
2226 struct gl_vertex_program *_TnlProgram;
2228 /** Cache of fixed-function programs */
2229 struct gl_program_cache *Cache;
2231 GLboolean _Overriden;
2236 * Context state for geometry programs.
2238 struct gl_geometry_program_state
2240 GLboolean Enabled; /**< GL_ARB_GEOMETRY_SHADER4 */
2241 GLboolean _Enabled; /**< Enabled and valid program? */
2242 struct gl_geometry_program *Current; /**< user-bound geometry program */
2244 /** Currently enabled and valid program (including internal programs
2245 * and compiled shader programs).
2247 struct gl_geometry_program *_Current;
2249 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2251 /** Cache of fixed-function programs */
2252 struct gl_program_cache *Cache;
2256 * Context state for fragment programs.
2258 struct gl_fragment_program_state
2260 GLboolean Enabled; /**< User-set fragment program enable flag */
2261 GLboolean _Enabled; /**< Enabled and _valid_ user program? */
2262 struct gl_fragment_program *Current; /**< User-bound fragment program */
2264 /** Currently enabled and valid fragment program (including internal
2265 * programs, user-defined fragment programs and GLSL fragment shaders).
2266 * This is the program we must use when rendering.
2268 struct gl_fragment_program *_Current;
2270 GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2272 /** Should fixed-function texturing be implemented with a fragment prog? */
2273 GLboolean _MaintainTexEnvProgram;
2275 /** Program to emulate fixed-function texture env/combine (see above) */
2276 struct gl_fragment_program *_TexEnvProgram;
2278 /** Cache of fixed-function programs */
2279 struct gl_program_cache *Cache;
2284 * ATI_fragment_shader runtime state
2286 #define ATI_FS_INPUT_PRIMARY 0
2287 #define ATI_FS_INPUT_SECONDARY 1
2289 struct atifs_instruction;
2290 struct atifs_setupinst;
2293 * ATI fragment shader
2295 struct ati_fragment_shader
2299 struct atifs_instruction *Instructions[2];
2300 struct atifs_setupinst *SetupInst[2];
2301 GLfloat Constants[8][4];
2302 GLbitfield LocalConstDef; /**< Indicates which constants have been set */
2303 GLubyte numArithInstr[2];
2304 GLubyte regsAssigned[2];
2305 GLubyte NumPasses; /**< 1 or 2 */
2307 GLubyte last_optype;
2308 GLboolean interpinp1;
2314 * Context state for GL_ATI_fragment_shader
2316 struct gl_ati_fragment_shader_state
2319 GLboolean _Enabled; /**< enabled and valid shader? */
2320 GLboolean Compiling;
2321 GLfloat GlobalConstants[8][4];
2322 struct ati_fragment_shader *Current;
2326 /** Set by #pragma directives */
2327 struct gl_sl_pragmas
2329 GLboolean IgnoreOptimize; /**< ignore #pragma optimize(on/off) ? */
2330 GLboolean IgnoreDebug; /**< ignore #pragma debug(on/off) ? */
2331 GLboolean Optimize; /**< defaults on */
2332 GLboolean Debug; /**< defaults off */
2337 * A GLSL vertex or fragment shader object.
2341 /** GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB.
2342 * Must be the first field.
2345 gl_shader_stage Stage;
2346 GLuint Name; /**< AKA the handle */
2347 GLchar *Label; /**< GL_KHR_debug */
2348 GLint RefCount; /**< Reference count */
2349 GLboolean DeletePending;
2350 GLboolean CompileStatus;
2351 const GLchar *Source; /**< Source code string */
2352 GLuint SourceChecksum; /**< for debug/logging purposes */
2353 struct gl_program *Program; /**< Post-compile assembly code */
2355 struct gl_sl_pragmas Pragmas;
2357 unsigned Version; /**< GLSL version used for linking */
2358 GLboolean IsES; /**< True if this shader uses GLSL ES */
2361 * \name Sampler tracking
2363 * \note Each of these fields is only set post-linking.
2366 unsigned num_samplers; /**< Number of samplers used by this shader. */
2367 GLbitfield active_samplers; /**< Bitfield of which samplers are used */
2368 GLbitfield shadow_samplers; /**< Samplers used for shadow sampling. */
2372 * Map from sampler unit to texture unit (set by glUniform1i())
2374 * A sampler unit is associated with each sampler uniform by the linker.
2375 * The sampler unit associated with each uniform is stored in the
2376 * \c gl_uniform_storage::sampler field.
2378 GLubyte SamplerUnits[MAX_SAMPLERS];
2379 /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
2380 gl_texture_index SamplerTargets[MAX_SAMPLERS];
2383 * Number of default uniform block components used by this shader.
2385 * This field is only set post-linking.
2387 unsigned num_uniform_components;
2390 * Number of combined uniform components used by this shader.
2392 * This field is only set post-linking. It is the sum of the uniform block
2393 * sizes divided by sizeof(float), and num_uniform_compoennts.
2395 unsigned num_combined_uniform_components;
2398 * This shader's uniform block information.
2400 * The offsets of the variables are assigned only for shaders in a program's
2403 struct gl_uniform_block *UniformBlocks;
2404 unsigned NumUniformBlocks;
2406 struct exec_list *ir;
2407 struct glsl_symbol_table *symbols;
2409 bool uses_builtin_functions;
2412 * Geometry shader state from GLSL 1.50 layout qualifiers.
2417 * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY, GL_TRIANGLES, or
2418 * GL_TRIANGLES_ADJACENCY, or PRIM_UNKNOWN if it's not set in this
2423 * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or PRIM_UNKNOWN if
2424 * it's not set in this shader.
2430 * Map from image uniform index to image unit (set by glUniform1i())
2432 * An image uniform index is associated with each image uniform by
2433 * the linker. The image index associated with each uniform is
2434 * stored in the \c gl_uniform_storage::image field.
2436 GLubyte ImageUnits[MAX_IMAGE_UNIFORMS];
2439 * Access qualifier specified in the shader for each image uniform
2440 * index. Either \c GL_READ_ONLY, \c GL_WRITE_ONLY or \c
2443 * It may be different, though only more strict than the value of
2444 * \c gl_image_unit::Access for the corresponding image unit.
2446 GLenum ImageAccess[MAX_IMAGE_UNIFORMS];
2449 * Number of image uniforms defined in the shader. It specifies
2450 * the number of valid elements in the \c ImageUnits and \c
2451 * ImageAccess arrays above.
2457 struct gl_uniform_buffer_variable
2462 * Name of the uniform as seen by glGetUniformIndices.
2464 * glGetUniformIndices requires that the block instance index \b not be
2465 * present in the name of queried uniforms.
2468 * \c gl_uniform_buffer_variable::IndexName and
2469 * \c gl_uniform_buffer_variable::Name may point to identical storage.
2473 const struct glsl_type *Type;
2474 unsigned int Offset;
2479 enum gl_uniform_block_packing
2487 struct gl_uniform_block
2489 /** Declared name of the uniform block */
2492 /** Array of supplemental information about UBO ir_variables. */
2493 struct gl_uniform_buffer_variable *Uniforms;
2497 * Index (GL_UNIFORM_BLOCK_BINDING) into ctx->UniformBufferBindings[] to use
2498 * with glBindBufferBase to bind a buffer object to this uniform block. When
2499 * updated in the program, _NEW_BUFFER_OBJECT will be set.
2504 * Minimum size of a buffer object to back this uniform buffer
2505 * (GL_UNIFORM_BLOCK_DATA_SIZE).
2507 GLuint UniformBufferSize;
2510 * Layout specified in the shader
2512 * This isn't accessible through the API, but it is used while
2513 * cross-validating uniform blocks.
2515 enum gl_uniform_block_packing _Packing;
2519 * Structure that represents a reference to an atomic buffer from some
2522 struct gl_active_atomic_buffer
2524 /** Uniform indices of the atomic counters declared within it. */
2528 /** Binding point index associated with it. */
2531 /** Minimum reasonable size it is expected to have. */
2534 /** Shader stages making use of it. */
2535 GLboolean StageReferences[MESA_SHADER_STAGES];
2539 * A GLSL program object.
2540 * Basically a linked collection of vertex and fragment shaders.
2542 struct gl_shader_program
2544 GLenum Type; /**< Always GL_SHADER_PROGRAM (internal token) */
2545 GLuint Name; /**< aka handle or ID */
2546 GLchar *Label; /**< GL_KHR_debug */
2547 GLint RefCount; /**< Reference count */
2548 GLboolean DeletePending;
2551 * Is the application intending to glGetProgramBinary this program?
2553 GLboolean BinaryRetreivableHint;
2556 * Flags that the linker should not reject the program if it lacks
2557 * a vertex or fragment shader. GLES2 doesn't allow separate
2558 * shader objects, and would reject them. However, we internally
2559 * build separate shader objects for fixed function programs, which
2560 * we use for drivers/common/meta.c and for handling
2561 * _mesa_update_state with no program bound (for example in
2564 GLboolean InternalSeparateShader;
2566 GLuint NumShaders; /**< number of attached shaders */
2567 struct gl_shader **Shaders; /**< List of attached the shaders */
2570 * User-defined attribute bindings
2572 * These are set via \c glBindAttribLocation and are used to direct the
2573 * GLSL linker. These are \b not the values used in the compiled shader,
2574 * and they are \b not the values returned by \c glGetAttribLocation.
2576 struct string_to_uint_map *AttributeBindings;
2579 * User-defined fragment data bindings
2581 * These are set via \c glBindFragDataLocation and are used to direct the
2582 * GLSL linker. These are \b not the values used in the compiled shader,
2583 * and they are \b not the values returned by \c glGetFragDataLocation.
2585 struct string_to_uint_map *FragDataBindings;
2586 struct string_to_uint_map *FragDataIndexBindings;
2589 * Transform feedback varyings last specified by
2590 * glTransformFeedbackVaryings().
2592 * For the current set of transform feeedback varyings used for transform
2593 * feedback output, see LinkedTransformFeedback.
2598 GLchar **VaryingNames; /**< Array [NumVarying] of char * */
2599 } TransformFeedback;
2601 /** Post-link transform feedback info. */
2602 struct gl_transform_feedback_info LinkedTransformFeedback;
2604 /** Post-link gl_FragDepth layout for ARB_conservative_depth. */
2605 enum gl_frag_depth_layout FragDepthLayout;
2608 * Geometry shader state - copied into gl_geometry_program by
2609 * _mesa_copy_linked_program_data().
2614 GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2615 GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2616 GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2618 * True if gl_ClipDistance is written to. Copied into
2619 * gl_geometry_program by _mesa_copy_linked_program_data().
2621 GLboolean UsesClipDistance;
2622 GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
2623 0 if not present. */
2624 GLboolean UsesEndPrimitive;
2627 /** Vertex shader state */
2630 * True if gl_ClipDistance is written to. Copied into gl_vertex_program
2631 * by _mesa_copy_linked_program_data().
2633 GLboolean UsesClipDistance;
2634 GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
2635 0 if not present. */
2638 /* post-link info: */
2639 unsigned NumUserUniformStorage;
2640 struct gl_uniform_storage *UniformStorage;
2643 * Size of the gl_ClipDistance array that is output from the last pipeline
2644 * stage before the fragment shader.
2646 unsigned LastClipDistanceArraySize;
2648 struct gl_uniform_block *UniformBlocks;
2649 unsigned NumUniformBlocks;
2652 * Scale factor for the uniform base location
2654 * This is used to generate locations (returned by \c glGetUniformLocation)
2655 * of uniforms. The base location of the uniform is multiplied by this
2656 * value, and the array index is added.
2662 * _mesa_uniform_merge_location_offset, _mesa_uniform_split_location_offset
2664 unsigned UniformLocationBaseScale;
2667 * Indices into the _LinkedShaders's UniformBlocks[] array for each stage
2668 * they're used in, or -1.
2670 * This is used to maintain the Binding values of the stage's UniformBlocks[]
2671 * and to answer the GL_UNIFORM_BLOCK_REFERENCED_BY_*_SHADER queries.
2673 int *UniformBlockStageIndex[MESA_SHADER_STAGES];
2676 * Map of active uniform names to locations
2678 * Maps any active uniform that is not an array element to a location.
2679 * Each active uniform, including individual structure members will appear
2680 * in this map. This roughly corresponds to the set of names that would be
2681 * enumerated by \c glGetActiveUniform.
2683 struct string_to_uint_map *UniformHash;
2685 struct gl_active_atomic_buffer *AtomicBuffers;
2686 unsigned NumAtomicBuffers;
2688 GLboolean LinkStatus; /**< GL_LINK_STATUS */
2689 GLboolean Validated;
2690 GLboolean _Used; /**< Ever used for drawing? */
2693 unsigned Version; /**< GLSL version used for linking */
2694 GLboolean IsES; /**< True if this program uses GLSL ES */
2697 * Per-stage shaders resulting from the first stage of linking.
2699 * Set of linked shaders for this program. The array is accessed using the
2700 * \c MESA_SHADER_* defines. Entries for non-existent stages will be
2703 struct gl_shader *_LinkedShaders[MESA_SHADER_STAGES];
2707 #define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
2708 #define GLSL_LOG 0x2 /**< Write shaders to files */
2709 #define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
2710 #define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
2711 #define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
2712 #define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
2713 #define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
2714 #define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
2715 #define GLSL_REPORT_ERRORS 0x100 /**< Print compilation errors */
2716 #define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
2720 * Context state for GLSL vertex/fragment shaders.
2722 struct gl_shader_state
2725 * Programs used for rendering
2727 * There is a separate program set for each shader stage. If
2728 * GL_EXT_separate_shader_objects is not supported, each of these must point
2729 * to \c NULL or to the same program.
2731 struct gl_shader_program *CurrentProgram[MESA_SHADER_STAGES];
2733 struct gl_shader_program *_CurrentFragmentProgram;
2736 * Program used by glUniform calls.
2738 * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2740 struct gl_shader_program *ActiveProgram;
2742 GLbitfield Flags; /**< Mask of GLSL_x flags */
2747 * Compiler options for a single GLSL shaders type
2749 struct gl_shader_compiler_options
2751 /** Driver-selectable options: */
2752 GLboolean EmitCondCodes; /**< Use condition codes? */
2753 GLboolean EmitNoLoops;
2754 GLboolean EmitNoFunctions;
2755 GLboolean EmitNoCont; /**< Emit CONT opcode? */
2756 GLboolean EmitNoMainReturn; /**< Emit CONT/RET opcodes? */
2757 GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */
2758 GLboolean EmitNoPow; /**< Emit POW opcodes? */
2759 GLboolean LowerClipDistance; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2762 * \name Forms of indirect addressing the driver cannot do.
2765 GLboolean EmitNoIndirectInput; /**< No indirect addressing of inputs */
2766 GLboolean EmitNoIndirectOutput; /**< No indirect addressing of outputs */
2767 GLboolean EmitNoIndirectTemp; /**< No indirect addressing of temps */
2768 GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */
2771 GLuint MaxIfDepth; /**< Maximum nested IF blocks */
2772 GLuint MaxUnrollIterations;
2775 * Optimize code for array of structures backends.
2777 * This is a proxy for:
2778 * - preferring DP4 instructions (rather than MUL/MAD) for
2779 * matrix * vector operations, such as position transformation.
2781 GLboolean OptimizeForAOS;
2783 struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
2788 * Occlusion/timer query object.
2790 struct gl_query_object
2792 GLenum Target; /**< The query target, when active */
2793 GLuint Id; /**< hash table ID/name */
2794 GLchar *Label; /**< GL_KHR_debug */
2795 GLuint64EXT Result; /**< the counter */
2796 GLboolean Active; /**< inside Begin/EndQuery */
2797 GLboolean Ready; /**< result is ready? */
2798 GLboolean EverBound;/**< has query object ever been bound */
2803 * Context state for query objects.
2805 struct gl_query_state
2807 struct _mesa_HashTable *QueryObjects;
2808 struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
2809 struct gl_query_object *CurrentTimerObject; /* GL_EXT_timer_query */
2811 /** GL_NV_conditional_render */
2812 struct gl_query_object *CondRenderQuery;
2814 /** GL_EXT_transform_feedback */
2815 struct gl_query_object *PrimitivesGenerated;
2816 struct gl_query_object *PrimitivesWritten;
2818 /** GL_ARB_timer_query */
2819 struct gl_query_object *TimeElapsed;
2821 GLenum CondRenderMode;
2825 /** Sync object state */
2826 struct gl_sync_object
2828 GLenum Type; /**< GL_SYNC_FENCE */
2829 GLuint Name; /**< Fence name */
2830 GLchar *Label; /**< GL_KHR_debug */
2831 GLint RefCount; /**< Reference count */
2832 GLboolean DeletePending; /**< Object was deleted while there were still
2833 * live references (e.g., sync not yet finished)
2835 GLenum SyncCondition;
2836 GLbitfield Flags; /**< Flags passed to glFenceSync */
2837 GLuint StatusFlag:1; /**< Has the sync object been signaled? */
2842 * State which can be shared by multiple contexts:
2844 struct gl_shared_state
2846 _glthread_Mutex Mutex; /**< for thread safety */
2847 GLint RefCount; /**< Reference count */
2848 struct _mesa_HashTable *DisplayList; /**< Display lists hash table */
2849 struct _mesa_HashTable *TexObjects; /**< Texture objects hash table */
2851 /** Default texture objects (shared by all texture units) */
2852 struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
2854 /** Fallback texture used when a bound texture is incomplete */
2855 struct gl_texture_object *FallbackTex[NUM_TEXTURE_TARGETS];
2858 * \name Thread safety and statechange notification for texture
2861 * \todo Improve the granularity of locking.
2864 _glthread_Mutex TexMutex; /**< texobj thread safety */
2865 GLuint TextureStateStamp; /**< state notification for shared tex */
2868 /** Default buffer object for vertex arrays that aren't in VBOs */
2869 struct gl_buffer_object *NullBufferObj;
2872 * \name Vertex/geometry/fragment programs
2875 struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
2876 struct gl_vertex_program *DefaultVertexProgram;
2877 struct gl_fragment_program *DefaultFragmentProgram;
2878 struct gl_geometry_program *DefaultGeometryProgram;
2881 /* GL_ATI_fragment_shader */
2882 struct _mesa_HashTable *ATIShaders;
2883 struct ati_fragment_shader *DefaultFragmentShader;
2885 struct _mesa_HashTable *BufferObjects;
2887 /** Table of both gl_shader and gl_shader_program objects */
2888 struct _mesa_HashTable *ShaderObjects;
2890 /* GL_EXT_framebuffer_object */
2891 struct _mesa_HashTable *RenderBuffers;
2892 struct _mesa_HashTable *FrameBuffers;
2895 struct set *SyncObjects;
2897 /** GL_ARB_sampler_objects */
2898 struct _mesa_HashTable *SamplerObjects;
2901 * Some context in this share group was affected by a GPU reset
2903 * On the next call to \c glGetGraphicsResetStatus, contexts that have not
2904 * been affected by a GPU reset must also return
2905 * \c GL_INNOCENT_CONTEXT_RESET_ARB.
2907 * Once this field becomes true, it is never reset to false.
2909 bool ShareGroupReset;
2915 * Renderbuffers represent drawing surfaces such as color, depth and/or
2916 * stencil. A framebuffer object has a set of renderbuffers.
2917 * Drivers will typically derive subclasses of this type.
2919 struct gl_renderbuffer
2921 _glthread_Mutex Mutex; /**< for thread safety */
2922 GLuint ClassID; /**< Useful for drivers */
2924 GLchar *Label; /**< GL_KHR_debug */
2926 GLuint Width, Height;
2928 GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
2929 GLboolean AttachedAnytime; /**< TRUE if it was attached to a framebuffer */
2931 * True for renderbuffers that wrap textures, giving the driver a chance to
2932 * flush render caches through the FinishRenderTexture hook.
2934 * Drivers may also set this on renderbuffers other than those generated by
2935 * glFramebufferTexture(), though it means FinishRenderTexture() would be
2936 * called without a rb->TexImage.
2938 GLboolean NeedsFinishRenderTexture;
2940 GLenum InternalFormat; /**< The user-specified format */
2941 GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2942 GL_STENCIL_INDEX. */
2943 mesa_format Format; /**< The actual renderbuffer memory format */
2945 * Pointer to the texture image if this renderbuffer wraps a texture,
2948 * Note that the reference on the gl_texture_object containing this
2949 * TexImage is held by the gl_renderbuffer_attachment.
2951 struct gl_texture_image *TexImage;
2953 /** Delete this renderbuffer */
2954 void (*Delete)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2956 /** Allocate new storage for this renderbuffer */
2957 GLboolean (*AllocStorage)(struct gl_context *ctx,
2958 struct gl_renderbuffer *rb,
2959 GLenum internalFormat,
2960 GLuint width, GLuint height);
2965 * A renderbuffer attachment points to either a texture object (and specifies
2966 * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2968 struct gl_renderbuffer_attachment
2970 GLenum Type; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2974 * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2975 * application supplied renderbuffer object.
2977 struct gl_renderbuffer *Renderbuffer;
2980 * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2981 * supplied texture object.
2983 struct gl_texture_object *Texture;
2984 GLuint TextureLevel; /**< Attached mipmap level. */
2985 GLuint CubeMapFace; /**< 0 .. 5, for cube map textures. */
2986 GLuint Zoffset; /**< Slice for 3D textures, or layer for both 1D
2987 * and 2D array textures */
2993 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2994 * In C++ terms, think of this as a base class from which device drivers
2995 * will make derived classes.
2997 struct gl_framebuffer
2999 _glthread_Mutex Mutex; /**< for thread safety */
3001 * If zero, this is a window system framebuffer. If non-zero, this
3002 * is a FBO framebuffer; note that for some devices (i.e. those with
3003 * a natural pixel coordinate system for FBOs that differs from the
3004 * OpenGL/Mesa coordinate system), this means that the viewport,
3005 * polygon face orientation, and polygon stipple will have to be inverted.
3008 GLchar *Label; /**< GL_KHR_debug */
3011 GLboolean DeletePending;
3014 * The framebuffer's visual. Immutable if this is a window system buffer.
3015 * Computed from attachments if user-made FBO.
3017 struct gl_config Visual;
3019 GLuint Width, Height; /**< size of frame buffer in pixels */
3021 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
3023 GLint _Xmin, _Xmax; /**< inclusive */
3024 GLint _Ymin, _Ymax; /**< exclusive */
3027 /** \name Derived Z buffer stuff */
3029 GLuint _DepthMax; /**< Max depth buffer value */
3030 GLfloat _DepthMaxF; /**< Float max depth buffer value */
3031 GLfloat _MRD; /**< minimum resolvable difference in Z values */
3034 /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
3037 /** Integer color values */
3038 GLboolean _IntegerColor;
3040 /* ARB_color_buffer_float */
3041 GLboolean _AllColorBuffersFixedPoint; /* no integer, no float */
3042 GLboolean _HasSNormOrFloatColorBuffer;
3044 /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
3045 struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
3047 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
3048 * attribute group and GL_PIXEL attribute group, respectively.
3050 GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
3051 GLenum ColorReadBuffer;
3053 /** Computed from ColorDraw/ReadBuffer above */
3054 GLuint _NumColorDrawBuffers;
3055 GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
3056 GLint _ColorReadBufferIndex; /* -1 = None */
3057 struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
3058 struct gl_renderbuffer *_ColorReadBuffer;
3061 * The maximum number of layers in the framebuffer, or 0 if the framebuffer
3062 * is not layered. For cube maps and cube map arrays, each cube face
3063 * counts as a layer.
3065 GLuint MaxNumLayers;
3067 /** Delete this framebuffer */
3068 void (*Delete)(struct gl_framebuffer *fb);
3073 * Precision info for shader datatypes. See glGetShaderPrecisionFormat().
3077 GLushort RangeMin; /**< min value exponent */
3078 GLushort RangeMax; /**< max value exponent */
3079 GLushort Precision; /**< number of mantissa bits */
3084 * Limits for vertex, geometry and fragment programs/shaders.
3086 struct gl_program_constants
3088 /* logical limits */
3089 GLuint MaxInstructions;
3090 GLuint MaxAluInstructions;
3091 GLuint MaxTexInstructions;
3092 GLuint MaxTexIndirections;
3095 GLuint MaxAddressRegs;
3096 GLuint MaxAddressOffset; /**< [-MaxAddressOffset, MaxAddressOffset-1] */
3097 GLuint MaxParameters;
3098 GLuint MaxLocalParams;
3099 GLuint MaxEnvParams;
3100 /* native/hardware limits */
3101 GLuint MaxNativeInstructions;
3102 GLuint MaxNativeAluInstructions;
3103 GLuint MaxNativeTexInstructions;
3104 GLuint MaxNativeTexIndirections;
3105 GLuint MaxNativeAttribs;
3106 GLuint MaxNativeTemps;
3107 GLuint MaxNativeAddressRegs;
3108 GLuint MaxNativeParameters;
3110 GLuint MaxUniformComponents; /**< Usually == MaxParameters * 4 */
3113 * \name Per-stage input / output limits
3115 * Previous to OpenGL 3.2, the intrastage data limits were advertised with
3116 * a single value: GL_MAX_VARYING_COMPONENTS (GL_MAX_VARYING_VECTORS in
3117 * ES). This is stored as \c gl_constants::MaxVarying.
3119 * Starting with OpenGL 3.2, the limits are advertised with per-stage
3120 * variables. Each stage as a certain number of outputs that it can feed
3121 * to the next stage and a certain number inputs that it can consume from
3122 * the previous stage.
3124 * Vertex shader inputs do not participate this in this accounting.
3125 * These are tracked exclusively by \c gl_program_constants::MaxAttribs.
3127 * Fragment shader outputs do not participate this in this accounting.
3128 * These are tracked exclusively by \c gl_constants::MaxDrawBuffers.
3131 GLuint MaxInputComponents;
3132 GLuint MaxOutputComponents;
3135 /* ES 2.0 and GL_ARB_ES2_compatibility */
3136 struct gl_precision LowFloat, MediumFloat, HighFloat;
3137 struct gl_precision LowInt, MediumInt, HighInt;
3138 /* GL_ARB_uniform_buffer_object */
3139 GLuint MaxUniformBlocks;
3140 GLuint MaxCombinedUniformComponents;
3141 GLuint MaxTextureImageUnits;
3143 /* GL_ARB_shader_atomic_counters */
3144 GLuint MaxAtomicBuffers;
3145 GLuint MaxAtomicCounters;
3147 /* GL_ARB_shader_image_load_store */
3148 GLuint MaxImageUniforms;
3153 * Constants which may be overridden by device driver during context creation
3154 * but are never changed after that.
3158 GLuint MaxTextureMbytes; /**< Max memory per image, in MB */
3159 GLuint MaxTextureLevels; /**< Max mipmap levels. */
3160 GLuint Max3DTextureLevels; /**< Max mipmap levels for 3D textures */
3161 GLuint MaxCubeTextureLevels; /**< Max mipmap levels for cube textures */
3162 GLuint MaxArrayTextureLayers; /**< Max layers in array textures */
3163 GLuint MaxTextureRectSize; /**< Max rectangle texture size, in pixes */
3164 GLuint MaxTextureCoordUnits;
3165 GLuint MaxCombinedTextureImageUnits;
3166 GLuint MaxTextureUnits; /**< = MIN(CoordUnits, FragmentProgram.ImageUnits) */
3167 GLfloat MaxTextureMaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
3168 GLfloat MaxTextureLodBias; /**< GL_EXT_texture_lod_bias */
3169 GLuint MaxTextureBufferSize; /**< GL_ARB_texture_buffer_object */
3171 GLuint TextureBufferOffsetAlignment; /**< GL_ARB_texture_buffer_range */
3173 GLuint MaxArrayLockSize;
3177 GLfloat MinPointSize, MaxPointSize; /**< aliased */
3178 GLfloat MinPointSizeAA, MaxPointSizeAA; /**< antialiased */
3179 GLfloat PointSizeGranularity;
3180 GLfloat MinLineWidth, MaxLineWidth; /**< aliased */
3181 GLfloat MinLineWidthAA, MaxLineWidthAA; /**< antialiased */
3182 GLfloat LineWidthGranularity;
3184 GLuint MaxClipPlanes;
3186 GLfloat MaxShininess; /**< GL_NV_light_max_exponent */
3187 GLfloat MaxSpotExponent; /**< GL_NV_light_max_exponent */
3189 GLuint MaxViewportWidth, MaxViewportHeight;
3190 GLuint MaxViewports; /**< GL_ARB_viewport_array */
3191 GLuint ViewportSubpixelBits; /**< GL_ARB_viewport_array */
3195 } ViewportBounds; /**< GL_ARB_viewport_array */
3197 struct gl_program_constants Program[MESA_SHADER_STAGES];
3198 GLuint MaxProgramMatrices;
3199 GLuint MaxProgramMatrixStackDepth;
3202 GLuint SamplesPassed;
3205 GLuint PrimitivesGenerated;
3206 GLuint PrimitivesWritten;
3209 /** vertex array / buffer object bounds checking */
3210 GLboolean CheckArrayBounds;
3212 GLuint MaxDrawBuffers; /**< GL_ARB_draw_buffers */
3214 GLuint MaxColorAttachments; /**< GL_EXT_framebuffer_object */
3215 GLuint MaxRenderbufferSize; /**< GL_EXT_framebuffer_object */
3216 GLuint MaxSamples; /**< GL_ARB_framebuffer_object */
3218 /** Number of varying vectors between any two shader stages. */
3222 * GL_ARB_uniform_buffer_object
3224 GLuint MaxCombinedUniformBlocks;
3225 GLuint MaxUniformBufferBindings;
3226 GLuint MaxUniformBlockSize;
3227 GLuint UniformBufferOffsetAlignment;
3230 /** GL_ARB_geometry_shader4 */
3231 GLuint MaxGeometryOutputVertices;
3232 GLuint MaxGeometryTotalOutputComponents;
3234 GLuint GLSLVersion; /**< GLSL version supported (ex: 120 = 1.20) */
3237 * Changes default GLSL extension behavior from "error" to "warn". It's out
3238 * of spec, but it can make some apps work that otherwise wouldn't.
3240 GLboolean ForceGLSLExtensionsWarn;
3243 * If non-zero, forces GLSL shaders without the #version directive to behave
3244 * as if they began with "#version ForceGLSLVersion".
3246 GLuint ForceGLSLVersion;
3249 * Does the driver support real 32-bit integers? (Otherwise, integers are
3250 * simulated via floats.)
3252 GLboolean NativeIntegers;
3255 * If the driver supports real 32-bit integers, what integer value should be
3256 * used for boolean true in uniform uploads? (Usually 1 or ~0.)
3258 GLuint UniformBooleanTrue;
3260 /** Which texture units support GL_ATI_envmap_bumpmap as targets */
3261 GLbitfield SupportedBumpUnits;
3264 * Maximum amount of time, measured in nanseconds, that the server can wait.
3266 GLuint64 MaxServerWaitTimeout;
3268 /** GL_EXT_provoking_vertex */
3269 GLboolean QuadsFollowProvokingVertexConvention;
3271 /** OpenGL version 3.0 */
3272 GLbitfield ContextFlags; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
3274 /** OpenGL version 3.2 */
3275 GLbitfield ProfileMask; /**< Mask of CONTEXT_x_PROFILE_BIT */
3277 /** GL_EXT_transform_feedback */
3278 GLuint MaxTransformFeedbackBuffers;
3279 GLuint MaxTransformFeedbackSeparateComponents;
3280 GLuint MaxTransformFeedbackInterleavedComponents;
3281 GLuint MaxVertexStreams;
3283 /** GL_EXT_gpu_shader4 */
3284 GLint MinProgramTexelOffset, MaxProgramTexelOffset;
3286 /** GL_ARB_texture_gather */
3287 GLuint MinProgramTextureGatherOffset;
3288 GLuint MaxProgramTextureGatherOffset;
3289 GLuint MaxProgramTextureGatherComponents;
3291 /* GL_ARB_robustness */
3292 GLenum ResetStrategy;
3294 /* GL_ARB_blend_func_extended */
3295 GLuint MaxDualSourceDrawBuffers;
3298 * Whether the implementation strips out and ignores texture borders.
3300 * Many GPU hardware implementations don't support rendering with texture
3301 * borders and mipmapped textures. (Note: not static border color, but the
3302 * old 1-pixel border around each edge). Implementations then have to do
3303 * slow fallbacks to be correct, or just ignore the border and be fast but
3304 * wrong. Setting the flag strips the border off of TexImage calls,
3305 * providing "fast but wrong" at significantly reduced driver complexity.
3307 * Texture borders are deprecated in GL 3.0.
3309 GLboolean StripTextureBorder;
3312 * For drivers which can do a better job at eliminating unused uniforms
3313 * than the GLSL compiler.
3315 * XXX Remove these as soon as a better solution is available.
3317 GLboolean GLSLSkipStrictMaxUniformLimitCheck;
3320 * Force software support for primitive restart in the VBO module.
3322 GLboolean PrimitiveRestartInSoftware;
3325 * Always use the GetTransformFeedbackVertexCount() driver hook, rather
3326 * than passing the transform feedback object to the drawing function.
3328 GLboolean AlwaysUseGetTransformFeedbackVertexCount;
3330 /** GL_ARB_map_buffer_alignment */
3331 GLuint MinMapBufferAlignment;
3334 * Disable varying packing. This is out of spec, but potentially useful
3335 * for older platforms that supports a limited number of texture
3336 * indirections--on these platforms, unpacking the varyings in the fragment
3337 * shader increases the number of texture indirections by 1, which might
3338 * make some shaders not executable at all.
3340 * Drivers that support transform feedback must set this value to GL_FALSE.
3342 GLboolean DisableVaryingPacking;
3345 * Maximum value supported for an index in DrawElements and friends.
3347 * This must be at least (1ull<<24)-1. The default value is
3350 * \since ES 3.0 or GL_ARB_ES3_compatibility
3351 * \sa _mesa_init_constants
3353 GLuint64 MaxElementIndex;
3356 * Disable interpretation of line continuations (lines ending with a
3357 * backslash character ('\') in GLSL source.
3359 GLboolean DisableGLSLLineContinuations;
3361 /** GL_ARB_texture_multisample */
3362 GLint MaxColorTextureSamples;
3363 GLint MaxDepthTextureSamples;
3364 GLint MaxIntegerSamples;
3366 /** GL_ARB_shader_atomic_counters */
3367 GLuint MaxAtomicBufferBindings;
3368 GLuint MaxAtomicBufferSize;
3369 GLuint MaxCombinedAtomicBuffers;
3370 GLuint MaxCombinedAtomicCounters;
3372 /** GL_ARB_vertex_attrib_binding */
3373 GLint MaxVertexAttribRelativeOffset;
3374 GLint MaxVertexAttribBindings;
3376 /* GL_ARB_shader_image_load_store */
3377 GLuint MaxImageUnits;
3378 GLuint MaxCombinedImageUnitsAndFragmentOutputs;
3379 GLuint MaxImageSamples;
3380 GLuint MaxCombinedImageUniforms;
3385 * Enable flag for each OpenGL extension. Different device drivers will
3386 * enable different extensions at runtime.
3388 struct gl_extensions
3390 GLboolean dummy; /* don't remove this! */
3391 GLboolean dummy_true; /* Set true by _mesa_init_extensions(). */
3392 GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
3393 GLboolean ANGLE_texture_compression_dxt;
3394 GLboolean ARB_ES2_compatibility;
3395 GLboolean ARB_ES3_compatibility;
3396 GLboolean ARB_arrays_of_arrays;
3397 GLboolean ARB_base_instance;
3398 GLboolean ARB_blend_func_extended;
3399 GLboolean ARB_color_buffer_float;
3400 GLboolean ARB_compute_shader;
3401 GLboolean ARB_conservative_depth;
3402 GLboolean ARB_depth_buffer_float;
3403 GLboolean ARB_depth_clamp;
3404 GLboolean ARB_depth_texture;
3405 GLboolean ARB_draw_buffers_blend;
3406 GLboolean ARB_draw_elements_base_vertex;
3407 GLboolean ARB_draw_indirect;
3408 GLboolean ARB_draw_instanced;
3409 GLboolean ARB_fragment_coord_conventions;
3410 GLboolean ARB_fragment_program;
3411 GLboolean ARB_fragment_program_shadow;
3412 GLboolean ARB_fragment_shader;
3413 GLboolean ARB_framebuffer_object;
3414 GLboolean ARB_explicit_attrib_location;
3415 GLboolean ARB_geometry_shader4;
3416 GLboolean ARB_gpu_shader5;
3417 GLboolean ARB_half_float_pixel;
3418 GLboolean ARB_half_float_vertex;
3419 GLboolean ARB_instanced_arrays;
3420 GLboolean ARB_internalformat_query;
3421 GLboolean ARB_map_buffer_range;
3422 GLboolean ARB_occlusion_query;
3423 GLboolean ARB_occlusion_query2;
3424 GLboolean ARB_point_sprite;
3425 GLboolean ARB_sample_shading;
3426 GLboolean ARB_seamless_cube_map;
3427 GLboolean ARB_shader_atomic_counters;
3428 GLboolean ARB_shader_bit_encoding;
3429 GLboolean ARB_shader_image_load_store;
3430 GLboolean ARB_shader_stencil_export;
3431 GLboolean ARB_shader_texture_lod;
3432 GLboolean ARB_shading_language_packing;
3433 GLboolean ARB_shading_language_420pack;
3434 GLboolean ARB_shadow;
3436 GLboolean ARB_texture_border_clamp;
3437 GLboolean ARB_texture_buffer_object;
3438 GLboolean ARB_texture_buffer_object_rgb32;
3439 GLboolean ARB_texture_buffer_range;
3440 GLboolean ARB_texture_compression_rgtc;
3441 GLboolean ARB_texture_cube_map;
3442 GLboolean ARB_texture_cube_map_array;
3443 GLboolean ARB_texture_env_combine;
3444 GLboolean ARB_texture_env_crossbar;
3445 GLboolean ARB_texture_env_dot3;
3446 GLboolean ARB_texture_float;
3447 GLboolean ARB_texture_gather;
3448 GLboolean ARB_texture_mirror_clamp_to_edge;
3449 GLboolean ARB_texture_multisample;
3450 GLboolean ARB_texture_non_power_of_two;
3451 GLboolean ARB_texture_query_levels;
3452 GLboolean ARB_texture_query_lod;
3453 GLboolean ARB_texture_rg;
3454 GLboolean ARB_texture_rgb10_a2ui;
3455 GLboolean ARB_texture_view;
3456 GLboolean ARB_timer_query;
3457 GLboolean ARB_transform_feedback2;
3458 GLboolean ARB_transform_feedback3;
3459 GLboolean ARB_transform_feedback_instanced;
3460 GLboolean ARB_uniform_buffer_object;
3461 GLboolean ARB_vertex_program;
3462 GLboolean ARB_vertex_shader;
3463 GLboolean ARB_vertex_type_10f_11f_11f_rev;
3464 GLboolean ARB_vertex_type_2_10_10_10_rev;
3465 GLboolean ARB_viewport_array;
3466 GLboolean EXT_blend_color;
3467 GLboolean EXT_blend_equation_separate;
3468 GLboolean EXT_blend_func_separate;
3469 GLboolean EXT_blend_minmax;
3470 GLboolean EXT_depth_bounds_test;
3471 GLboolean EXT_draw_buffers2;
3472 GLboolean EXT_framebuffer_multisample;
3473 GLboolean EXT_framebuffer_multisample_blit_scaled;
3474 GLboolean EXT_framebuffer_sRGB;
3475 GLboolean EXT_gpu_program_parameters;
3476 GLboolean EXT_gpu_shader4;
3477 GLboolean EXT_packed_float;
3478 GLboolean EXT_pixel_buffer_object;
3479 GLboolean EXT_point_parameters;
3480 GLboolean EXT_provoking_vertex;
3481 GLboolean EXT_separate_shader_objects;
3482 GLboolean EXT_shader_integer_mix;
3483 GLboolean EXT_stencil_two_side;
3484 GLboolean EXT_texture3D;
3485 GLboolean EXT_texture_array;
3486 GLboolean EXT_texture_compression_latc;
3487 GLboolean EXT_texture_compression_s3tc;
3488 GLboolean EXT_texture_env_dot3;
3489 GLboolean EXT_texture_filter_anisotropic;
3490 GLboolean EXT_texture_integer;
3491 GLboolean EXT_texture_mirror_clamp;
3492 GLboolean EXT_texture_shared_exponent;
3493 GLboolean EXT_texture_snorm;
3494 GLboolean EXT_texture_sRGB;
3495 GLboolean EXT_texture_sRGB_decode;
3496 GLboolean EXT_texture_swizzle;
3497 GLboolean EXT_transform_feedback;
3498 GLboolean EXT_timer_query;
3499 GLboolean EXT_vertex_array_bgra;
3500 GLboolean OES_standard_derivatives;
3501 /* vendor extensions */
3502 GLboolean AMD_performance_monitor;
3503 GLboolean AMD_seamless_cubemap_per_texture;
3504 GLboolean AMD_vertex_shader_layer;
3505 GLboolean APPLE_object_purgeable;
3506 GLboolean ATI_envmap_bumpmap;
3507 GLboolean ATI_texture_compression_3dc;
3508 GLboolean ATI_texture_mirror_once;
3509 GLboolean ATI_texture_env_combine3;
3510 GLboolean ATI_fragment_shader;
3511 GLboolean ATI_separate_stencil;
3512 GLboolean MESA_pack_invert;
3513 GLboolean MESA_ycbcr_texture;
3514 GLboolean NV_conditional_render;
3515 GLboolean NV_fog_distance;
3516 GLboolean NV_fragment_program_option;
3517 GLboolean NV_point_sprite;
3518 GLboolean NV_primitive_restart;
3519 GLboolean NV_texture_barrier;
3520 GLboolean NV_texture_env_combine4;
3521 GLboolean NV_texture_rectangle;
3522 GLboolean NV_vdpau_interop;
3523 GLboolean TDFX_texture_compression_FXT1;
3524 GLboolean OES_EGL_image;
3525 GLboolean OES_draw_texture;
3526 GLboolean OES_depth_texture_cube_map;
3527 GLboolean OES_EGL_image_external;
3528 GLboolean OES_compressed_ETC1_RGB8_texture;
3529 GLboolean extension_sentinel;
3530 /** The extension string */
3531 const GLubyte *String;
3532 /** Number of supported extensions */
3538 * A stack of matrices (projection, modelview, color, texture, etc).
3540 struct gl_matrix_stack
3542 GLmatrix *Top; /**< points into Stack */
3543 GLmatrix *Stack; /**< array [MaxDepth] of GLmatrix */
3544 GLuint Depth; /**< 0 <= Depth < MaxDepth */
3545 GLuint MaxDepth; /**< size of Stack[] array */
3546 GLuint DirtyFlag; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
3551 * \name Bits for image transfer operations
3552 * \sa __struct gl_contextRec::ImageTransferState.
3555 #define IMAGE_SCALE_BIAS_BIT 0x1
3556 #define IMAGE_SHIFT_OFFSET_BIT 0x2
3557 #define IMAGE_MAP_COLOR_BIT 0x4
3558 #define IMAGE_CLAMP_BIT 0x800
3561 /** Pixel Transfer ops */
3562 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
3563 IMAGE_SHIFT_OFFSET_BIT | \
3564 IMAGE_MAP_COLOR_BIT)
3567 * \name Bits to indicate what state has changed.
3570 #define _NEW_MODELVIEW (1 << 0) /**< gl_context::ModelView */
3571 #define _NEW_PROJECTION (1 << 1) /**< gl_context::Projection */
3572 #define _NEW_TEXTURE_MATRIX (1 << 2) /**< gl_context::TextureMatrix */
3573 #define _NEW_COLOR (1 << 3) /**< gl_context::Color */
3574 #define _NEW_DEPTH (1 << 4) /**< gl_context::Depth */
3575 #define _NEW_EVAL (1 << 5) /**< gl_context::Eval, EvalMap */
3576 #define _NEW_FOG (1 << 6) /**< gl_context::Fog */
3577 #define _NEW_HINT (1 << 7) /**< gl_context::Hint */
3578 #define _NEW_LIGHT (1 << 8) /**< gl_context::Light */
3579 #define _NEW_LINE (1 << 9) /**< gl_context::Line */
3580 #define _NEW_PIXEL (1 << 10) /**< gl_context::Pixel */
3581 #define _NEW_POINT (1 << 11) /**< gl_context::Point */
3582 #define _NEW_POLYGON (1 << 12) /**< gl_context::Polygon */
3583 #define _NEW_POLYGONSTIPPLE (1 << 13) /**< gl_context::PolygonStipple */
3584 #define _NEW_SCISSOR (1 << 14) /**< gl_context::Scissor */
3585 #define _NEW_STENCIL (1 << 15) /**< gl_context::Stencil */
3586 #define _NEW_TEXTURE (1 << 16) /**< gl_context::Texture */
3587 #define _NEW_TRANSFORM (1 << 17) /**< gl_context::Transform */
3588 #define _NEW_VIEWPORT (1 << 18) /**< gl_context::Viewport */
3589 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3590 #define _NEW_ARRAY (1 << 20) /**< gl_context::Array */
3591 #define _NEW_RENDERMODE (1 << 21) /**< gl_context::RenderMode, etc */
3592 #define _NEW_BUFFERS (1 << 22) /**< gl_context::Visual, DrawBuffer, */
3593 #define _NEW_CURRENT_ATTRIB (1 << 23) /**< gl_context::Current */
3594 #define _NEW_MULTISAMPLE (1 << 24) /**< gl_context::Multisample */
3595 #define _NEW_TRACK_MATRIX (1 << 25) /**< gl_context::VertexProgram */
3596 #define _NEW_PROGRAM (1 << 26) /**< New program/shader state */
3597 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
3598 #define _NEW_BUFFER_OBJECT (1 << 28)
3599 #define _NEW_FRAG_CLAMP (1 << 29)
3600 /* gap, re-use for core Mesa state only; use ctx->DriverFlags otherwise */
3601 #define _NEW_VARYING_VP_INPUTS (1 << 31) /**< gl_context::varying_vp_inputs */
3607 * Composite state flags
3610 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
3616 #define _MESA_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | \
3626 /* This has to be included here. */
3631 * Display list flags.
3632 * Strictly this is a tnl-private concept, but it doesn't seem
3633 * worthwhile adding a tnl private structure just to hold this one bit
3636 #define DLIST_DANGLING_REFS 0x1
3639 /** Opaque declaration of display list payload data type */
3640 union gl_dlist_node;
3644 * Provide a location where information about a display list can be
3645 * collected. Could be extended with driverPrivate structures,
3646 * etc. in the future.
3648 struct gl_display_list
3651 GLchar *Label; /**< GL_KHR_debug */
3652 GLbitfield Flags; /**< DLIST_x flags */
3653 /** The dlist commands are in a linked list of nodes */
3654 union gl_dlist_node *Head;
3659 * State used during display list compilation and execution.
3661 struct gl_dlist_state
3663 GLuint CallDepth; /**< Current recursion calling depth */
3665 struct gl_display_list *CurrentList; /**< List currently being compiled */
3666 union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
3667 GLuint CurrentPos; /**< Index into current block of nodes */
3669 GLvertexformat ListVtxfmt;
3671 GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
3672 GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
3674 GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
3675 GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
3678 /* State known to have been set by the currently-compiling display
3679 * list. Used to eliminate some redundant state changes.
3687 * These are a mapping of the GL_ARB_debug_output/GL_KHR_debug enums
3688 * to small enums suitable for use as an array index.
3691 enum mesa_debug_source {
3692 MESA_DEBUG_SOURCE_API,
3693 MESA_DEBUG_SOURCE_WINDOW_SYSTEM,
3694 MESA_DEBUG_SOURCE_SHADER_COMPILER,
3695 MESA_DEBUG_SOURCE_THIRD_PARTY,
3696 MESA_DEBUG_SOURCE_APPLICATION,
3697 MESA_DEBUG_SOURCE_OTHER,
3698 MESA_DEBUG_SOURCE_COUNT
3701 enum mesa_debug_type {
3702 MESA_DEBUG_TYPE_ERROR,
3703 MESA_DEBUG_TYPE_DEPRECATED,
3704 MESA_DEBUG_TYPE_UNDEFINED,
3705 MESA_DEBUG_TYPE_PORTABILITY,
3706 MESA_DEBUG_TYPE_PERFORMANCE,
3707 MESA_DEBUG_TYPE_OTHER,
3708 MESA_DEBUG_TYPE_MARKER,
3709 MESA_DEBUG_TYPE_PUSH_GROUP,
3710 MESA_DEBUG_TYPE_POP_GROUP,
3711 MESA_DEBUG_TYPE_COUNT
3714 enum mesa_debug_severity {
3715 MESA_DEBUG_SEVERITY_LOW,
3716 MESA_DEBUG_SEVERITY_MEDIUM,
3717 MESA_DEBUG_SEVERITY_HIGH,
3718 MESA_DEBUG_SEVERITY_NOTIFICATION,
3719 MESA_DEBUG_SEVERITY_COUNT
3725 * An error, warning, or other piece of debug information for an application
3726 * to consume via GL_ARB_debug_output/GL_KHR_debug.
3730 enum mesa_debug_source source;
3731 enum mesa_debug_type type;
3733 enum mesa_debug_severity severity;
3738 struct gl_debug_namespace
3740 struct _mesa_HashTable *IDs;
3741 unsigned ZeroID; /* a HashTable won't take zero, so store its state here */
3742 /** lists of IDs in the hash table at each severity */
3743 struct simple_node Severity[MESA_DEBUG_SEVERITY_COUNT];
3746 struct gl_debug_state
3748 GLDEBUGPROC Callback;
3749 const void *CallbackData;
3750 GLboolean SyncOutput;
3751 GLboolean DebugOutput;
3752 GLboolean ARBCallback; /* Used to track if current callback is of type ARB_debug_output or KHR_debug */
3753 GLboolean Defaults[MAX_DEBUG_GROUP_STACK_DEPTH][MESA_DEBUG_SEVERITY_COUNT][MESA_DEBUG_SOURCE_COUNT][MESA_DEBUG_TYPE_COUNT];
3754 struct gl_debug_namespace Namespaces[MAX_DEBUG_GROUP_STACK_DEPTH][MESA_DEBUG_SOURCE_COUNT][MESA_DEBUG_TYPE_COUNT];
3755 struct gl_debug_msg Log[MAX_DEBUG_LOGGED_MESSAGES];
3756 struct gl_debug_msg DebugGroupMsgs[MAX_DEBUG_GROUP_STACK_DEPTH];
3757 GLint GroupStackDepth;
3760 GLint NextMsgLength; /* redundant, but copied here from Log[NextMsg].length
3761 for the sake of the offsetof() code in get.c */
3765 * Enum for the OpenGL APIs we know about and may support.
3767 * NOTE: This must match the api_enum table in
3768 * src/mesa/main/get_hash_generator.py
3772 API_OPENGL_COMPAT, /* legacy / compatibility contexts */
3776 API_OPENGL_LAST = API_OPENGL_CORE
3780 * Driver-specific state flags.
3782 * These are or'd with gl_context::NewDriverState to notify a driver about
3783 * a state change. The driver sets the flags at context creation and
3784 * the meaning of the bits set is opaque to core Mesa.
3786 struct gl_driver_flags
3788 /** gl_context::Array::_DrawArrays (vertex array state) */
3789 GLbitfield NewArray;
3791 /** gl_context::TransformFeedback::CurrentObject */
3792 GLbitfield NewTransformFeedback;
3794 /** gl_context::TransformFeedback::CurrentObject::shader_program */
3795 GLbitfield NewTransformFeedbackProg;
3797 /** gl_context::RasterDiscard */
3798 GLbitfield NewRasterizerDiscard;
3801 * gl_context::UniformBufferBindings
3802 * gl_shader_program::UniformBlocks
3804 GLbitfield NewUniformBuffer;
3807 * gl_context::AtomicBufferBindings
3809 GLbitfield NewAtomicBuffer;
3812 * gl_context::ImageUnits
3814 GLbitfield NewImageUnits;
3817 struct gl_uniform_buffer_binding
3819 struct gl_buffer_object *BufferObject;
3820 /** Start of uniform block data in the buffer */
3822 /** Size of data allowed to be referenced from the buffer (in bytes) */
3825 * glBindBufferBase() indicates that the Size should be ignored and only
3826 * limited by the current size of the BufferObject.
3828 GLboolean AutomaticSize;
3832 * ARB_shader_image_load_store image unit.
3834 struct gl_image_unit
3837 * Texture object bound to this unit.
3839 struct gl_texture_object *TexObj;
3842 * Level of the texture object bound to this unit.
3847 * \c GL_TRUE if the whole level is bound as an array of layers, \c
3848 * GL_FALSE if only some specific layer of the texture is bound.
3854 * Layer of the texture object bound to this unit, or zero if the
3855 * whole level is bound.
3860 * Access allowed to this texture image. Either \c GL_READ_ONLY,
3861 * \c GL_WRITE_ONLY or \c GL_READ_WRITE.
3866 * GL internal format that determines the interpretation of the
3867 * image memory when shader image operations are performed through
3873 * Mesa format corresponding to \c Format.
3875 mesa_format _ActualFormat;
3878 * GL_TRUE if the state of this image unit is valid and access from
3879 * the shader is allowed. Otherwise loads from this unit should
3880 * return zero and stores should have no effect.
3886 * Binding point for an atomic counter buffer object.
3888 struct gl_atomic_buffer_binding
3890 struct gl_buffer_object *BufferObject;
3896 * Mesa rendering context.
3898 * This is the central context data structure for Mesa. Almost all
3899 * OpenGL state is contained in this structure.
3900 * Think of this as a base class from which device drivers will derive
3905 /** State possibly shared with other contexts in the address space */
3906 struct gl_shared_state *Shared;
3908 /** \name API function pointer tables */
3912 * The current dispatch table for non-displaylist-saving execution, either
3913 * BeginEnd or OutsideBeginEnd
3915 struct _glapi_table *Exec;
3917 * The normal dispatch table for non-displaylist-saving, non-begin/end
3919 struct _glapi_table *OutsideBeginEnd;
3920 /** The dispatch table used between glNewList() and glEndList() */
3921 struct _glapi_table *Save;
3923 * The dispatch table used between glBegin() and glEnd() (outside of a
3924 * display list). Only valid functions between those two are set, which is
3925 * mostly just the set in a GLvertexformat struct.
3927 struct _glapi_table *BeginEnd;
3929 * Tracks the current dispatch table out of the 3 above, so that it can be
3930 * re-set on glXMakeCurrent().
3932 struct _glapi_table *CurrentDispatch;
3935 struct gl_config Visual;
3936 struct gl_framebuffer *DrawBuffer; /**< buffer for writing */
3937 struct gl_framebuffer *ReadBuffer; /**< buffer for reading */
3938 struct gl_framebuffer *WinSysDrawBuffer; /**< set with MakeCurrent */
3939 struct gl_framebuffer *WinSysReadBuffer; /**< set with MakeCurrent */
3942 * Device driver function pointer table
3944 struct dd_function_table Driver;
3946 /** Core/Driver constants */
3947 struct gl_constants Const;
3949 /** \name The various 4x4 matrix stacks */
3951 struct gl_matrix_stack ModelviewMatrixStack;
3952 struct gl_matrix_stack ProjectionMatrixStack;
3953 struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
3954 struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
3955 struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
3958 /** Combined modelview and projection matrix */
3959 GLmatrix _ModelProjectMatrix;
3961 /** \name Display lists */
3962 struct gl_dlist_state ListState;
3964 GLboolean ExecuteFlag; /**< Execute GL commands? */
3965 GLboolean CompileFlag; /**< Compile GL commands into display list? */
3967 /** Extension information */
3968 struct gl_extensions Extensions;
3970 /** GL version integer, for example 31 for GL 3.1, or 20 for GLES 2.0. */
3972 char *VersionString;
3974 /** \name State attribute stack (for glPush/PopAttrib) */
3976 GLuint AttribStackDepth;
3977 struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
3980 /** \name Renderer attribute groups
3982 * We define a struct for each attribute group to make pushing and popping
3983 * attributes easy. Also it's a good organization.
3986 struct gl_accum_attrib Accum; /**< Accum buffer attributes */
3987 struct gl_colorbuffer_attrib Color; /**< Color buffer attributes */
3988 struct gl_current_attrib Current; /**< Current attributes */
3989 struct gl_depthbuffer_attrib Depth; /**< Depth buffer attributes */
3990 struct gl_eval_attrib Eval; /**< Eval attributes */
3991 struct gl_fog_attrib Fog; /**< Fog attributes */
3992 struct gl_hint_attrib Hint; /**< Hint attributes */
3993 struct gl_light_attrib Light; /**< Light attributes */
3994 struct gl_line_attrib Line; /**< Line attributes */
3995 struct gl_list_attrib List; /**< List attributes */
3996 struct gl_multisample_attrib Multisample;
3997 struct gl_pixel_attrib Pixel; /**< Pixel attributes */
3998 struct gl_point_attrib Point; /**< Point attributes */
3999 struct gl_polygon_attrib Polygon; /**< Polygon attributes */
4000 GLuint PolygonStipple[32]; /**< Polygon stipple */
4001 struct gl_scissor_attrib Scissor; /**< Scissor attributes */
4002 struct gl_stencil_attrib Stencil; /**< Stencil buffer attributes */
4003 struct gl_texture_attrib Texture; /**< Texture attributes */
4004 struct gl_transform_attrib Transform; /**< Transformation attributes */
4005 struct gl_viewport_attrib ViewportArray[MAX_VIEWPORTS]; /**< Viewport attributes */
4008 /** \name Client attribute stack */
4010 GLuint ClientAttribStackDepth;
4011 struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
4014 /** \name Client attribute groups */
4016 struct gl_array_attrib Array; /**< Vertex arrays */
4017 struct gl_pixelstore_attrib Pack; /**< Pixel packing */
4018 struct gl_pixelstore_attrib Unpack; /**< Pixel unpacking */
4019 struct gl_pixelstore_attrib DefaultPacking; /**< Default params */
4022 /** \name Other assorted state (not pushed/popped on attribute stack) */
4024 struct gl_pixelmaps PixelMaps;
4026 struct gl_evaluators EvalMap; /**< All evaluators */
4027 struct gl_feedback Feedback; /**< Feedback */
4028 struct gl_selection Select; /**< Selection */
4030 struct gl_program_state Program; /**< general program state */
4031 struct gl_vertex_program_state VertexProgram;
4032 struct gl_fragment_program_state FragmentProgram;
4033 struct gl_geometry_program_state GeometryProgram;
4034 struct gl_ati_fragment_shader_state ATIFragmentShader;
4036 struct gl_shader_state Shader; /**< GLSL shader object state */
4037 struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_STAGES];
4039 struct gl_query_state Query; /**< occlusion, timer queries */
4041 struct gl_transform_feedback_state TransformFeedback;
4043 struct gl_perf_monitor_state PerfMonitor;
4045 struct gl_buffer_object *DrawIndirectBuffer; /** < GL_ARB_draw_indirect */
4047 struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
4048 struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
4051 * Current GL_ARB_uniform_buffer_object binding referenced by
4052 * GL_UNIFORM_BUFFER target for glBufferData, glMapBuffer, etc.
4054 struct gl_buffer_object *UniformBuffer;
4057 * Array of uniform buffers for GL_ARB_uniform_buffer_object and GL 3.1.
4058 * This is set up using glBindBufferRange() or glBindBufferBase(). They are
4059 * associated with uniform blocks by glUniformBlockBinding()'s state in the
4062 struct gl_uniform_buffer_binding
4063 UniformBufferBindings[MAX_COMBINED_UNIFORM_BUFFERS];
4066 * Object currently associated with the GL_ATOMIC_COUNTER_BUFFER
4069 struct gl_buffer_object *AtomicBuffer;
4072 * Array of atomic counter buffer binding points.
4074 struct gl_atomic_buffer_binding
4075 AtomicBufferBindings[MAX_COMBINED_ATOMIC_BUFFERS];
4078 * Array of image units for ARB_shader_image_load_store.
4080 struct gl_image_unit ImageUnits[MAX_IMAGE_UNITS];
4084 struct gl_meta_state *Meta; /**< for "meta" operations */
4086 /* GL_EXT_framebuffer_object */
4087 struct gl_renderbuffer *CurrentRenderbuffer;
4089 GLenum ErrorValue; /**< Last error code */
4092 * Recognize and silence repeated error debug messages in buggy apps.
4094 const char *ErrorDebugFmtString;
4095 GLuint ErrorDebugCount;
4097 /* GL_ARB_debug_output/GL_KHR_debug */
4098 struct gl_debug_state Debug;
4100 GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
4101 GLbitfield NewState; /**< bitwise-or of _NEW_* flags */
4102 GLbitfield NewDriverState;/**< bitwise-or of flags from DriverFlags */
4104 struct gl_driver_flags DriverFlags;
4106 GLboolean ViewportInitialized; /**< has viewport size been initialized? */
4108 GLbitfield64 varying_vp_inputs; /**< mask of VERT_BIT_* flags */
4110 /** \name Derived state */
4111 GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
4112 GLfloat _EyeZDir[3];
4113 GLfloat _ModelViewInvScale;
4114 GLboolean _NeedEyeCoords;
4115 GLboolean _ForceEyeCoords;
4117 GLuint TextureStateTimestamp; /**< detect changes to shared state */
4119 struct gl_list_extensions *ListExt; /**< driver dlist extensions */
4121 /** \name For debugging/development only */
4123 GLboolean FirstTimeCurrent;
4126 /** software compression/decompression supported or not */
4127 GLboolean Mesa_DXTn;
4129 GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];
4131 GLboolean RasterDiscard; /**< GL_RASTERIZER_DISCARD */
4134 * \name Hooks for module contexts.
4136 * These will eventually live in the driver or elsewhere.
4139 void *swrast_context;
4140 void *swsetup_context;
4141 void *swtnl_context;
4142 struct vbo_context *vbo_context;
4143 struct st_context *st;
4148 * \name NV_vdpau_interop
4151 const void *vdpDevice;
4152 const void *vdpGetProcAddress;
4153 struct set *vdpSurfaces;
4157 * Has this context observed a GPU reset in any context in the share group?
4159 * Once this field becomes true, it is never reset to false.
4161 GLboolean ShareGroupReset;
4166 extern int MESA_VERBOSE;
4167 extern int MESA_DEBUG_FLAGS;
4168 # define MESA_FUNCTION __FUNCTION__
4170 # define MESA_VERBOSE 0
4171 # define MESA_DEBUG_FLAGS 0
4172 # define MESA_FUNCTION "a function"
4179 /** The MESA_VERBOSE var is a bitmask of these flags */
4182 VERBOSE_VARRAY = 0x0001,
4183 VERBOSE_TEXTURE = 0x0002,
4184 VERBOSE_MATERIAL = 0x0004,
4185 VERBOSE_PIPELINE = 0x0008,
4186 VERBOSE_DRIVER = 0x0010,
4187 VERBOSE_STATE = 0x0020,
4188 VERBOSE_API = 0x0040,
4189 VERBOSE_DISPLAY_LIST = 0x0100,
4190 VERBOSE_LIGHTING = 0x0200,
4191 VERBOSE_PRIMS = 0x0400,
4192 VERBOSE_VERTS = 0x0800,
4193 VERBOSE_DISASSEM = 0x1000,
4194 VERBOSE_DRAW = 0x2000,
4195 VERBOSE_SWAPBUFFERS = 0x4000
4199 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
4202 DEBUG_SILENT = (1 << 0),
4203 DEBUG_ALWAYS_FLUSH = (1 << 1),
4204 DEBUG_INCOMPLETE_TEXTURE = (1 << 2),
4205 DEBUG_INCOMPLETE_FBO = (1 << 3)
4214 #endif /* MTYPES_H */