2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * glTexParameter-related functions
33 #include "main/glheader.h"
34 #include "main/colormac.h"
35 #include "main/context.h"
36 #include "main/formats.h"
37 #include "main/macros.h"
38 #include "main/mfeatures.h"
39 #include "main/mtypes.h"
40 #include "main/texcompress.h"
41 #include "main/texparam.h"
42 #include "main/teximage.h"
43 #include "main/texstate.h"
44 #include "program/prog_instruction.h"
48 * Check if a coordinate wrap mode is supported for the texture target.
49 * \return GL_TRUE if legal, GL_FALSE otherwise
52 validate_texture_wrap_mode(struct gl_context * ctx, GLenum target, GLenum wrap)
54 const struct gl_extensions * const e = & ctx->Extensions;
56 if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE ||
57 (wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
58 /* any texture target */
61 else if (target != GL_TEXTURE_RECTANGLE_NV &&
63 (wrap == GL_MIRRORED_REPEAT &&
64 e->ARB_texture_mirrored_repeat) ||
65 (wrap == GL_MIRROR_CLAMP_EXT &&
66 (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
67 (wrap == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
68 (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
69 (wrap == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
70 (e->EXT_texture_mirror_clamp)))) {
71 /* non-rectangle texture */
75 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)", wrap );
81 * Get current texture object for given target.
82 * Return NULL if any error (and record the error).
83 * Note that this is different from _mesa_select_tex_object() in that proxy
84 * targets are not accepted.
85 * Only the glGetTexLevelParameter() functions accept proxy targets.
87 static struct gl_texture_object *
88 get_texobj(struct gl_context *ctx, GLenum target, GLboolean get)
90 struct gl_texture_unit *texUnit;
92 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
93 _mesa_error(ctx, GL_INVALID_OPERATION,
94 "gl%sTexParameter(current unit)", get ? "Get" : "");
98 texUnit = _mesa_get_current_tex_unit(ctx);
102 return texUnit->CurrentTex[TEXTURE_1D_INDEX];
104 return texUnit->CurrentTex[TEXTURE_2D_INDEX];
106 return texUnit->CurrentTex[TEXTURE_3D_INDEX];
107 case GL_TEXTURE_CUBE_MAP:
108 if (ctx->Extensions.ARB_texture_cube_map) {
109 return texUnit->CurrentTex[TEXTURE_CUBE_INDEX];
112 case GL_TEXTURE_RECTANGLE_NV:
113 if (ctx->Extensions.NV_texture_rectangle) {
114 return texUnit->CurrentTex[TEXTURE_RECT_INDEX];
117 case GL_TEXTURE_1D_ARRAY_EXT:
118 if (ctx->Extensions.MESA_texture_array) {
119 return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX];
122 case GL_TEXTURE_2D_ARRAY_EXT:
123 if (ctx->Extensions.MESA_texture_array) {
124 return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX];
131 _mesa_error(ctx, GL_INVALID_ENUM,
132 "gl%sTexParameter(target)", get ? "Get" : "");
138 * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
139 * \return -1 if error.
142 comp_to_swizzle(GLenum comp)
164 set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz)
167 ASSERT(swz <= SWIZZLE_NIL);
169 GLuint mask = 0x7 << (3 * comp);
170 GLuint s = (*swizzle & ~mask) | (swz << (3 * comp));
177 * This is called just prior to changing any texture object state.
178 * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE
179 * state flag and then mark the texture object as 'incomplete' so that any
180 * per-texture derived state gets recomputed.
183 flush(struct gl_context *ctx, struct gl_texture_object *texObj)
185 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
186 texObj->_Complete = GL_FALSE;
191 * Set an integer-valued texture parameter
192 * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
195 set_tex_parameteri(struct gl_context *ctx,
196 struct gl_texture_object *texObj,
197 GLenum pname, const GLint *params)
200 case GL_TEXTURE_MIN_FILTER:
201 if (texObj->MinFilter == params[0])
207 texObj->MinFilter = params[0];
209 case GL_NEAREST_MIPMAP_NEAREST:
210 case GL_LINEAR_MIPMAP_NEAREST:
211 case GL_NEAREST_MIPMAP_LINEAR:
212 case GL_LINEAR_MIPMAP_LINEAR:
213 if (texObj->Target != GL_TEXTURE_RECTANGLE_NV) {
215 texObj->MinFilter = params[0];
220 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)",
225 case GL_TEXTURE_MAG_FILTER:
226 if (texObj->MagFilter == params[0])
232 texObj->MagFilter = params[0];
235 _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(param=0x%x)",
240 case GL_TEXTURE_WRAP_S:
241 if (texObj->WrapS == params[0])
243 if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
245 texObj->WrapS = params[0];
250 case GL_TEXTURE_WRAP_T:
251 if (texObj->WrapT == params[0])
253 if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
255 texObj->WrapT = params[0];
260 case GL_TEXTURE_WRAP_R:
261 if (texObj->WrapR == params[0])
263 if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) {
265 texObj->WrapR = params[0];
270 case GL_TEXTURE_BASE_LEVEL:
271 if (texObj->BaseLevel == params[0])
274 (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) {
275 _mesa_error(ctx, GL_INVALID_VALUE,
276 "glTexParameter(param=%d)", params[0]);
280 texObj->BaseLevel = params[0];
283 case GL_TEXTURE_MAX_LEVEL:
284 if (texObj->MaxLevel == params[0])
286 if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) {
287 _mesa_error(ctx, GL_INVALID_OPERATION,
288 "glTexParameter(param=%d)", params[0]);
292 texObj->MaxLevel = params[0];
295 case GL_GENERATE_MIPMAP_SGIS:
296 if (texObj->GenerateMipmap != params[0]) {
298 texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
303 case GL_TEXTURE_COMPARE_MODE_ARB:
304 if (ctx->Extensions.ARB_shadow &&
305 (params[0] == GL_NONE ||
306 params[0] == GL_COMPARE_R_TO_TEXTURE_ARB)) {
307 if (texObj->CompareMode != params[0]) {
309 texObj->CompareMode = params[0];
315 _mesa_error(ctx, GL_INVALID_ENUM,
316 "glTexParameter(GL_TEXTURE_COMPARE_MODE_ARB)");
320 case GL_TEXTURE_COMPARE_FUNC_ARB:
321 if (ctx->Extensions.ARB_shadow) {
322 if (texObj->CompareFunc == params[0])
328 texObj->CompareFunc = params[0];
336 if (ctx->Extensions.EXT_shadow_funcs) {
338 texObj->CompareFunc = params[0];
343 _mesa_error(ctx, GL_INVALID_ENUM,
344 "glTexParameter(GL_TEXTURE_COMPARE_FUNC_ARB)");
348 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
352 case GL_DEPTH_TEXTURE_MODE_ARB:
353 if (ctx->Extensions.ARB_depth_texture &&
354 (params[0] == GL_LUMINANCE ||
355 params[0] == GL_INTENSITY ||
356 params[0] == GL_ALPHA ||
357 (ctx->Extensions.ARB_texture_rg && params[0] == GL_RED))) {
358 if (texObj->DepthMode != params[0]) {
360 texObj->DepthMode = params[0];
365 _mesa_error(ctx, GL_INVALID_ENUM,
366 "glTexParameter(GL_DEPTH_TEXTURE_MODE_ARB)");
370 #if FEATURE_OES_draw_texture
371 case GL_TEXTURE_CROP_RECT_OES:
372 texObj->CropRect[0] = params[0];
373 texObj->CropRect[1] = params[1];
374 texObj->CropRect[2] = params[2];
375 texObj->CropRect[3] = params[3];
379 case GL_TEXTURE_SWIZZLE_R_EXT:
380 case GL_TEXTURE_SWIZZLE_G_EXT:
381 case GL_TEXTURE_SWIZZLE_B_EXT:
382 case GL_TEXTURE_SWIZZLE_A_EXT:
383 if (ctx->Extensions.EXT_texture_swizzle) {
384 const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
385 const GLint swz = comp_to_swizzle(params[0]);
387 _mesa_error(ctx, GL_INVALID_OPERATION,
388 "glTexParameter(swizzle 0x%x)", params[0]);
394 texObj->Swizzle[comp] = params[0];
395 set_swizzle_component(&texObj->_Swizzle, comp, swz);
399 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
402 case GL_TEXTURE_SWIZZLE_RGBA_EXT:
403 if (ctx->Extensions.EXT_texture_swizzle) {
406 for (comp = 0; comp < 4; comp++) {
407 const GLint swz = comp_to_swizzle(params[comp]);
409 texObj->Swizzle[comp] = params[comp];
410 set_swizzle_component(&texObj->_Swizzle, comp, swz);
413 _mesa_error(ctx, GL_INVALID_OPERATION,
414 "glTexParameter(swizzle 0x%x)", params[comp]);
420 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
424 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
431 * Set a float-valued texture parameter
432 * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise
435 set_tex_parameterf(struct gl_context *ctx,
436 struct gl_texture_object *texObj,
437 GLenum pname, const GLfloat *params)
440 case GL_TEXTURE_MIN_LOD:
441 if (texObj->MinLod == params[0])
444 texObj->MinLod = params[0];
447 case GL_TEXTURE_MAX_LOD:
448 if (texObj->MaxLod == params[0])
451 texObj->MaxLod = params[0];
454 case GL_TEXTURE_PRIORITY:
456 texObj->Priority = CLAMP(params[0], 0.0F, 1.0F);
459 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
460 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
461 if (texObj->MaxAnisotropy == params[0])
463 if (params[0] < 1.0) {
464 _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
468 /* clamp to max, that's what NVIDIA does */
469 texObj->MaxAnisotropy = MIN2(params[0],
470 ctx->Const.MaxTextureMaxAnisotropy);
474 static GLuint count = 0;
476 _mesa_error(ctx, GL_INVALID_ENUM,
477 "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
481 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
482 if (ctx->Extensions.ARB_shadow_ambient) {
483 if (texObj->CompareFailValue != params[0]) {
485 texObj->CompareFailValue = CLAMP(params[0], 0.0F, 1.0F);
490 _mesa_error(ctx, GL_INVALID_ENUM,
491 "glTexParameter(pname=GL_TEXTURE_COMPARE_FAIL_VALUE_ARB)");
495 case GL_TEXTURE_LOD_BIAS:
496 /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias */
497 if (ctx->Extensions.EXT_texture_lod_bias) {
498 if (texObj->LodBias != params[0]) {
500 texObj->LodBias = params[0];
507 case GL_TEXTURE_BORDER_COLOR:
509 texObj->BorderColor.f[RCOMP] = params[0];
510 texObj->BorderColor.f[GCOMP] = params[1];
511 texObj->BorderColor.f[BCOMP] = params[2];
512 texObj->BorderColor.f[ACOMP] = params[3];
516 _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname);
523 _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param)
525 GLboolean need_update;
526 struct gl_texture_object *texObj;
527 GET_CURRENT_CONTEXT(ctx);
528 ASSERT_OUTSIDE_BEGIN_END(ctx);
530 texObj = get_texobj(ctx, target, GL_FALSE);
535 case GL_TEXTURE_MIN_FILTER:
536 case GL_TEXTURE_MAG_FILTER:
537 case GL_TEXTURE_WRAP_S:
538 case GL_TEXTURE_WRAP_T:
539 case GL_TEXTURE_WRAP_R:
540 case GL_TEXTURE_BASE_LEVEL:
541 case GL_TEXTURE_MAX_LEVEL:
542 case GL_GENERATE_MIPMAP_SGIS:
543 case GL_TEXTURE_COMPARE_MODE_ARB:
544 case GL_TEXTURE_COMPARE_FUNC_ARB:
545 case GL_DEPTH_TEXTURE_MODE_ARB:
547 /* convert float param to int */
549 p[0] = (GLint) param;
550 p[1] = p[2] = p[3] = 0;
551 need_update = set_tex_parameteri(ctx, texObj, pname, p);
556 /* this will generate an error if pname is illegal */
559 p[1] = p[2] = p[3] = 0.0F;
560 need_update = set_tex_parameterf(ctx, texObj, pname, p);
564 if (ctx->Driver.TexParameter && need_update) {
565 ctx->Driver.TexParameter(ctx, target, texObj, pname, ¶m);
571 _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params)
573 GLboolean need_update;
574 struct gl_texture_object *texObj;
575 GET_CURRENT_CONTEXT(ctx);
576 ASSERT_OUTSIDE_BEGIN_END(ctx);
578 texObj = get_texobj(ctx, target, GL_FALSE);
583 case GL_TEXTURE_MIN_FILTER:
584 case GL_TEXTURE_MAG_FILTER:
585 case GL_TEXTURE_WRAP_S:
586 case GL_TEXTURE_WRAP_T:
587 case GL_TEXTURE_WRAP_R:
588 case GL_TEXTURE_BASE_LEVEL:
589 case GL_TEXTURE_MAX_LEVEL:
590 case GL_GENERATE_MIPMAP_SGIS:
591 case GL_TEXTURE_COMPARE_MODE_ARB:
592 case GL_TEXTURE_COMPARE_FUNC_ARB:
593 case GL_DEPTH_TEXTURE_MODE_ARB:
595 /* convert float param to int */
597 p[0] = (GLint) params[0];
598 p[1] = p[2] = p[3] = 0;
599 need_update = set_tex_parameteri(ctx, texObj, pname, p);
603 #if FEATURE_OES_draw_texture
604 case GL_TEXTURE_CROP_RECT_OES:
606 /* convert float params to int */
608 iparams[0] = (GLint) params[0];
609 iparams[1] = (GLint) params[1];
610 iparams[2] = (GLint) params[2];
611 iparams[3] = (GLint) params[3];
612 need_update = set_tex_parameteri(ctx, texObj, pname, iparams);
618 /* this will generate an error if pname is illegal */
619 need_update = set_tex_parameterf(ctx, texObj, pname, params);
622 if (ctx->Driver.TexParameter && need_update) {
623 ctx->Driver.TexParameter(ctx, target, texObj, pname, params);
629 _mesa_TexParameteri(GLenum target, GLenum pname, GLint param)
631 GLboolean need_update;
632 struct gl_texture_object *texObj;
633 GET_CURRENT_CONTEXT(ctx);
634 ASSERT_OUTSIDE_BEGIN_END(ctx);
636 texObj = get_texobj(ctx, target, GL_FALSE);
641 case GL_TEXTURE_MIN_LOD:
642 case GL_TEXTURE_MAX_LOD:
643 case GL_TEXTURE_PRIORITY:
644 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
645 case GL_TEXTURE_LOD_BIAS:
646 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
649 fparam[0] = (GLfloat) param;
650 fparam[1] = fparam[2] = fparam[3] = 0.0F;
651 /* convert int param to float */
652 need_update = set_tex_parameterf(ctx, texObj, pname, fparam);
656 /* this will generate an error if pname is illegal */
660 iparam[1] = iparam[2] = iparam[3] = 0;
661 need_update = set_tex_parameteri(ctx, texObj, pname, iparam);
665 if (ctx->Driver.TexParameter && need_update) {
666 GLfloat fparam = (GLfloat) param;
667 ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam);
673 _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params)
675 GLboolean need_update;
676 struct gl_texture_object *texObj;
677 GET_CURRENT_CONTEXT(ctx);
678 ASSERT_OUTSIDE_BEGIN_END(ctx);
680 texObj = get_texobj(ctx, target, GL_FALSE);
685 case GL_TEXTURE_BORDER_COLOR:
687 /* convert int params to float */
689 fparams[0] = INT_TO_FLOAT(params[0]);
690 fparams[1] = INT_TO_FLOAT(params[1]);
691 fparams[2] = INT_TO_FLOAT(params[2]);
692 fparams[3] = INT_TO_FLOAT(params[3]);
693 need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
696 case GL_TEXTURE_MIN_LOD:
697 case GL_TEXTURE_MAX_LOD:
698 case GL_TEXTURE_PRIORITY:
699 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
700 case GL_TEXTURE_LOD_BIAS:
701 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
703 /* convert int param to float */
705 fparams[0] = (GLfloat) params[0];
706 fparams[1] = fparams[2] = fparams[3] = 0.0F;
707 need_update = set_tex_parameterf(ctx, texObj, pname, fparams);
711 /* this will generate an error if pname is illegal */
712 need_update = set_tex_parameteri(ctx, texObj, pname, params);
715 if (ctx->Driver.TexParameter && need_update) {
717 fparams[0] = INT_TO_FLOAT(params[0]);
718 if (pname == GL_TEXTURE_BORDER_COLOR ||
719 pname == GL_TEXTURE_CROP_RECT_OES) {
720 fparams[1] = INT_TO_FLOAT(params[1]);
721 fparams[2] = INT_TO_FLOAT(params[2]);
722 fparams[3] = INT_TO_FLOAT(params[3]);
724 ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams);
730 * Set tex parameter to integer value(s). Primarily intended to set
731 * integer-valued texture border color (for integer-valued textures).
735 _mesa_TexParameterIiv(GLenum target, GLenum pname, const GLint *params)
737 struct gl_texture_object *texObj;
738 GET_CURRENT_CONTEXT(ctx);
739 ASSERT_OUTSIDE_BEGIN_END(ctx);
741 texObj = get_texobj(ctx, target, GL_FALSE);
746 case GL_TEXTURE_BORDER_COLOR:
747 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
748 /* set the integer-valued border color */
749 COPY_4V(texObj->BorderColor.i, params);
752 _mesa_TexParameteriv(target, pname, params);
755 /* XXX no driver hook for TexParameterIiv() yet */
760 * Set tex parameter to unsigned integer value(s). Primarily intended to set
761 * uint-valued texture border color (for integer-valued textures).
765 _mesa_TexParameterIuiv(GLenum target, GLenum pname, const GLuint *params)
767 struct gl_texture_object *texObj;
768 GET_CURRENT_CONTEXT(ctx);
769 ASSERT_OUTSIDE_BEGIN_END(ctx);
771 texObj = get_texobj(ctx, target, GL_FALSE);
776 case GL_TEXTURE_BORDER_COLOR:
777 FLUSH_VERTICES(ctx, _NEW_TEXTURE);
778 /* set the unsigned integer-valued border color */
779 COPY_4V(texObj->BorderColor.ui, params);
782 _mesa_TexParameteriv(target, pname, (const GLint *) params);
785 /* XXX no driver hook for TexParameterIuiv() yet */
792 _mesa_GetTexLevelParameterfv( GLenum target, GLint level,
793 GLenum pname, GLfloat *params )
796 _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
797 *params = (GLfloat) iparam;
802 _mesa_GetTexLevelParameteriv( GLenum target, GLint level,
803 GLenum pname, GLint *params )
805 const struct gl_texture_unit *texUnit;
806 struct gl_texture_object *texObj;
807 const struct gl_texture_image *img = NULL;
811 GET_CURRENT_CONTEXT(ctx);
812 ASSERT_OUTSIDE_BEGIN_END(ctx);
814 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxCombinedTextureImageUnits) {
815 _mesa_error(ctx, GL_INVALID_OPERATION,
816 "glGetTexLevelParameteriv(current unit)");
820 texUnit = _mesa_get_current_tex_unit(ctx);
822 /* this will catch bad target values */
823 maxLevels = _mesa_max_texture_levels(ctx, target);
824 if (maxLevels == 0) {
825 _mesa_error(ctx, GL_INVALID_ENUM,
826 "glGetTexLevelParameter[if]v(target=0x%x)", target);
830 if (level < 0 || level >= maxLevels) {
831 _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
835 texObj = _mesa_select_tex_object(ctx, texUnit, target);
836 _mesa_lock_texture(ctx, texObj);
838 img = _mesa_select_tex_image(ctx, texObj, target, level);
839 if (!img || !img->TexFormat) {
840 /* undefined texture image */
841 if (pname == GL_TEXTURE_COMPONENTS)
848 texFormat = img->TexFormat;
850 isProxy = _mesa_is_proxy_texture(target);
853 case GL_TEXTURE_WIDTH:
854 *params = img->Width;
856 case GL_TEXTURE_HEIGHT:
857 *params = img->Height;
859 case GL_TEXTURE_DEPTH:
860 *params = img->Depth;
862 case GL_TEXTURE_INTERNAL_FORMAT:
863 if (_mesa_is_format_compressed(img->TexFormat)) {
864 /* need to return the actual compressed format */
865 *params = _mesa_compressed_format_to_glenum(ctx, img->TexFormat);
868 /* return the user's requested internal format */
869 *params = img->InternalFormat;
872 case GL_TEXTURE_BORDER:
873 *params = img->Border;
875 case GL_TEXTURE_RED_SIZE:
876 if (img->_BaseFormat == GL_RED) {
877 *params = _mesa_get_format_bits(texFormat, pname);
881 case GL_TEXTURE_GREEN_SIZE:
882 if (img->_BaseFormat == GL_RG) {
883 *params = _mesa_get_format_bits(texFormat, pname);
887 case GL_TEXTURE_BLUE_SIZE:
888 if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
889 *params = _mesa_get_format_bits(texFormat, pname);
893 case GL_TEXTURE_ALPHA_SIZE:
894 if (img->_BaseFormat == GL_ALPHA ||
895 img->_BaseFormat == GL_LUMINANCE_ALPHA ||
896 img->_BaseFormat == GL_RGBA)
897 *params = _mesa_get_format_bits(texFormat, pname);
901 case GL_TEXTURE_INTENSITY_SIZE:
902 if (img->_BaseFormat != GL_INTENSITY)
905 *params = _mesa_get_format_bits(texFormat, pname);
907 /* intensity probably stored as rgb texture */
908 *params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
909 _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
913 case GL_TEXTURE_LUMINANCE_SIZE:
914 if (img->_BaseFormat != GL_LUMINANCE &&
915 img->_BaseFormat != GL_LUMINANCE_ALPHA)
918 *params = _mesa_get_format_bits(texFormat, pname);
920 /* luminance probably stored as rgb texture */
921 *params = MIN2(_mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE),
922 _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE));
926 case GL_TEXTURE_INDEX_SIZE_EXT:
927 if (img->_BaseFormat == GL_COLOR_INDEX)
928 *params = _mesa_get_format_bits(texFormat, pname);
932 case GL_TEXTURE_DEPTH_SIZE_ARB:
933 if (ctx->Extensions.ARB_depth_texture)
934 *params = _mesa_get_format_bits(texFormat, pname);
936 _mesa_error(ctx, GL_INVALID_ENUM,
937 "glGetTexLevelParameter[if]v(pname)");
939 case GL_TEXTURE_STENCIL_SIZE_EXT:
940 if (ctx->Extensions.EXT_packed_depth_stencil ||
941 ctx->Extensions.ARB_framebuffer_object) {
942 *params = _mesa_get_format_bits(texFormat, pname);
945 _mesa_error(ctx, GL_INVALID_ENUM,
946 "glGetTexLevelParameter[if]v(pname)");
949 case GL_TEXTURE_SHARED_SIZE:
950 if (ctx->VersionMajor >= 3) {
951 /* XXX return number of exponent bits for shared exponent texture
952 * formats, like GL_RGB9_E5.
957 _mesa_error(ctx, GL_INVALID_ENUM,
958 "glGetTexLevelParameter[if]v(pname)");
962 /* GL_ARB_texture_compression */
963 case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
964 if (_mesa_is_format_compressed(img->TexFormat) && !isProxy) {
965 *params = _mesa_format_image_size(texFormat, img->Width,
966 img->Height, img->Depth);
969 _mesa_error(ctx, GL_INVALID_OPERATION,
970 "glGetTexLevelParameter[if]v(pname)");
973 case GL_TEXTURE_COMPRESSED:
974 *params = (GLint) _mesa_is_format_compressed(img->TexFormat);
977 /* GL_ARB_texture_float */
978 case GL_TEXTURE_RED_TYPE_ARB:
979 if (ctx->Extensions.ARB_texture_float) {
980 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_RED_SIZE) ?
981 _mesa_get_format_datatype(texFormat) : GL_NONE;
984 _mesa_error(ctx, GL_INVALID_ENUM,
985 "glGetTexLevelParameter[if]v(pname)");
988 case GL_TEXTURE_GREEN_TYPE_ARB:
989 if (ctx->Extensions.ARB_texture_float) {
990 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_GREEN_SIZE) ?
991 _mesa_get_format_datatype(texFormat) : GL_NONE;
994 _mesa_error(ctx, GL_INVALID_ENUM,
995 "glGetTexLevelParameter[if]v(pname)");
998 case GL_TEXTURE_BLUE_TYPE_ARB:
999 if (ctx->Extensions.ARB_texture_float) {
1000 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_BLUE_SIZE) ?
1001 _mesa_get_format_datatype(texFormat) : GL_NONE;
1004 _mesa_error(ctx, GL_INVALID_ENUM,
1005 "glGetTexLevelParameter[if]v(pname)");
1008 case GL_TEXTURE_ALPHA_TYPE_ARB:
1009 if (ctx->Extensions.ARB_texture_float) {
1010 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_ALPHA_SIZE) ?
1011 _mesa_get_format_datatype(texFormat) : GL_NONE;
1014 _mesa_error(ctx, GL_INVALID_ENUM,
1015 "glGetTexLevelParameter[if]v(pname)");
1018 case GL_TEXTURE_LUMINANCE_TYPE_ARB:
1019 if (ctx->Extensions.ARB_texture_float) {
1020 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_LUMINANCE_SIZE) ?
1021 _mesa_get_format_datatype(texFormat) : GL_NONE;
1024 _mesa_error(ctx, GL_INVALID_ENUM,
1025 "glGetTexLevelParameter[if]v(pname)");
1028 case GL_TEXTURE_INTENSITY_TYPE_ARB:
1029 if (ctx->Extensions.ARB_texture_float) {
1030 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_INTENSITY_SIZE) ?
1031 _mesa_get_format_datatype(texFormat) : GL_NONE;
1034 _mesa_error(ctx, GL_INVALID_ENUM,
1035 "glGetTexLevelParameter[if]v(pname)");
1038 case GL_TEXTURE_DEPTH_TYPE_ARB:
1039 if (ctx->Extensions.ARB_texture_float) {
1040 *params = _mesa_get_format_bits(texFormat, GL_TEXTURE_DEPTH_SIZE) ?
1041 _mesa_get_format_datatype(texFormat) : GL_NONE;
1044 _mesa_error(ctx, GL_INVALID_ENUM,
1045 "glGetTexLevelParameter[if]v(pname)");
1050 _mesa_error(ctx, GL_INVALID_ENUM,
1051 "glGetTexLevelParameter[if]v(pname)");
1055 _mesa_unlock_texture(ctx, texObj);
1061 _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
1063 struct gl_texture_object *obj;
1064 GLboolean error = GL_FALSE;
1065 GET_CURRENT_CONTEXT(ctx);
1066 ASSERT_OUTSIDE_BEGIN_END(ctx);
1068 obj = get_texobj(ctx, target, GL_TRUE);
1072 _mesa_lock_texture(ctx, obj);
1074 case GL_TEXTURE_MAG_FILTER:
1075 *params = ENUM_TO_FLOAT(obj->MagFilter);
1077 case GL_TEXTURE_MIN_FILTER:
1078 *params = ENUM_TO_FLOAT(obj->MinFilter);
1080 case GL_TEXTURE_WRAP_S:
1081 *params = ENUM_TO_FLOAT(obj->WrapS);
1083 case GL_TEXTURE_WRAP_T:
1084 *params = ENUM_TO_FLOAT(obj->WrapT);
1086 case GL_TEXTURE_WRAP_R:
1087 *params = ENUM_TO_FLOAT(obj->WrapR);
1089 case GL_TEXTURE_BORDER_COLOR:
1090 params[0] = CLAMP(obj->BorderColor.f[0], 0.0F, 1.0F);
1091 params[1] = CLAMP(obj->BorderColor.f[1], 0.0F, 1.0F);
1092 params[2] = CLAMP(obj->BorderColor.f[2], 0.0F, 1.0F);
1093 params[3] = CLAMP(obj->BorderColor.f[3], 0.0F, 1.0F);
1095 case GL_TEXTURE_RESIDENT:
1098 if (ctx->Driver.IsTextureResident)
1099 resident = ctx->Driver.IsTextureResident(ctx, obj);
1102 *params = ENUM_TO_FLOAT(resident);
1105 case GL_TEXTURE_PRIORITY:
1106 *params = obj->Priority;
1108 case GL_TEXTURE_MIN_LOD:
1109 *params = obj->MinLod;
1111 case GL_TEXTURE_MAX_LOD:
1112 *params = obj->MaxLod;
1114 case GL_TEXTURE_BASE_LEVEL:
1115 *params = (GLfloat) obj->BaseLevel;
1117 case GL_TEXTURE_MAX_LEVEL:
1118 *params = (GLfloat) obj->MaxLevel;
1120 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1121 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
1122 *params = obj->MaxAnisotropy;
1127 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
1128 if (ctx->Extensions.ARB_shadow_ambient) {
1129 *params = obj->CompareFailValue;
1134 case GL_GENERATE_MIPMAP_SGIS:
1135 *params = (GLfloat) obj->GenerateMipmap;
1137 case GL_TEXTURE_COMPARE_MODE_ARB:
1138 if (ctx->Extensions.ARB_shadow) {
1139 *params = (GLfloat) obj->CompareMode;
1144 case GL_TEXTURE_COMPARE_FUNC_ARB:
1145 if (ctx->Extensions.ARB_shadow) {
1146 *params = (GLfloat) obj->CompareFunc;
1151 case GL_DEPTH_TEXTURE_MODE_ARB:
1152 if (ctx->Extensions.ARB_depth_texture) {
1153 *params = (GLfloat) obj->DepthMode;
1158 case GL_TEXTURE_LOD_BIAS:
1159 if (ctx->Extensions.EXT_texture_lod_bias) {
1160 *params = obj->LodBias;
1165 #if FEATURE_OES_draw_texture
1166 case GL_TEXTURE_CROP_RECT_OES:
1167 params[0] = obj->CropRect[0];
1168 params[1] = obj->CropRect[1];
1169 params[2] = obj->CropRect[2];
1170 params[3] = obj->CropRect[3];
1174 case GL_TEXTURE_SWIZZLE_R_EXT:
1175 case GL_TEXTURE_SWIZZLE_G_EXT:
1176 case GL_TEXTURE_SWIZZLE_B_EXT:
1177 case GL_TEXTURE_SWIZZLE_A_EXT:
1178 if (ctx->Extensions.EXT_texture_swizzle) {
1179 GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
1180 *params = (GLfloat) obj->Swizzle[comp];
1187 case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1188 if (ctx->Extensions.EXT_texture_swizzle) {
1190 for (comp = 0; comp < 4; comp++) {
1191 params[comp] = (GLfloat) obj->Swizzle[comp];
1205 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)",
1208 _mesa_unlock_texture(ctx, obj);
1213 _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
1215 struct gl_texture_object *obj;
1216 GLboolean error = GL_FALSE;
1217 GET_CURRENT_CONTEXT(ctx);
1218 ASSERT_OUTSIDE_BEGIN_END(ctx);
1220 obj = get_texobj(ctx, target, GL_TRUE);
1224 _mesa_lock_texture(ctx, obj);
1226 case GL_TEXTURE_MAG_FILTER:
1227 *params = (GLint) obj->MagFilter;
1229 case GL_TEXTURE_MIN_FILTER:
1230 *params = (GLint) obj->MinFilter;
1232 case GL_TEXTURE_WRAP_S:
1233 *params = (GLint) obj->WrapS;
1235 case GL_TEXTURE_WRAP_T:
1236 *params = (GLint) obj->WrapT;
1238 case GL_TEXTURE_WRAP_R:
1239 *params = (GLint) obj->WrapR;
1241 case GL_TEXTURE_BORDER_COLOR:
1244 b[0] = CLAMP(obj->BorderColor.f[0], 0.0F, 1.0F);
1245 b[1] = CLAMP(obj->BorderColor.f[1], 0.0F, 1.0F);
1246 b[2] = CLAMP(obj->BorderColor.f[2], 0.0F, 1.0F);
1247 b[3] = CLAMP(obj->BorderColor.f[3], 0.0F, 1.0F);
1248 params[0] = FLOAT_TO_INT(b[0]);
1249 params[1] = FLOAT_TO_INT(b[1]);
1250 params[2] = FLOAT_TO_INT(b[2]);
1251 params[3] = FLOAT_TO_INT(b[3]);
1254 case GL_TEXTURE_RESIDENT:
1257 if (ctx->Driver.IsTextureResident)
1258 resident = ctx->Driver.IsTextureResident(ctx, obj);
1261 *params = (GLint) resident;
1264 case GL_TEXTURE_PRIORITY:
1265 *params = FLOAT_TO_INT(obj->Priority);
1267 case GL_TEXTURE_MIN_LOD:
1268 *params = (GLint) obj->MinLod;
1270 case GL_TEXTURE_MAX_LOD:
1271 *params = (GLint) obj->MaxLod;
1273 case GL_TEXTURE_BASE_LEVEL:
1274 *params = obj->BaseLevel;
1276 case GL_TEXTURE_MAX_LEVEL:
1277 *params = obj->MaxLevel;
1279 case GL_TEXTURE_MAX_ANISOTROPY_EXT:
1280 if (ctx->Extensions.EXT_texture_filter_anisotropic) {
1281 *params = (GLint) obj->MaxAnisotropy;
1287 case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB:
1288 if (ctx->Extensions.ARB_shadow_ambient) {
1289 *params = (GLint) FLOAT_TO_INT(obj->CompareFailValue);
1295 case GL_GENERATE_MIPMAP_SGIS:
1296 *params = (GLint) obj->GenerateMipmap;
1298 case GL_TEXTURE_COMPARE_MODE_ARB:
1299 if (ctx->Extensions.ARB_shadow) {
1300 *params = (GLint) obj->CompareMode;
1306 case GL_TEXTURE_COMPARE_FUNC_ARB:
1307 if (ctx->Extensions.ARB_shadow) {
1308 *params = (GLint) obj->CompareFunc;
1314 case GL_DEPTH_TEXTURE_MODE_ARB:
1315 if (ctx->Extensions.ARB_depth_texture) {
1316 *params = (GLint) obj->DepthMode;
1322 case GL_TEXTURE_LOD_BIAS:
1323 if (ctx->Extensions.EXT_texture_lod_bias) {
1324 *params = (GLint) obj->LodBias;
1330 #if FEATURE_OES_draw_texture
1331 case GL_TEXTURE_CROP_RECT_OES:
1332 params[0] = obj->CropRect[0];
1333 params[1] = obj->CropRect[1];
1334 params[2] = obj->CropRect[2];
1335 params[3] = obj->CropRect[3];
1338 case GL_TEXTURE_SWIZZLE_R_EXT:
1339 case GL_TEXTURE_SWIZZLE_G_EXT:
1340 case GL_TEXTURE_SWIZZLE_B_EXT:
1341 case GL_TEXTURE_SWIZZLE_A_EXT:
1342 if (ctx->Extensions.EXT_texture_swizzle) {
1343 GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT;
1344 *params = obj->Swizzle[comp];
1351 case GL_TEXTURE_SWIZZLE_RGBA_EXT:
1352 if (ctx->Extensions.EXT_texture_swizzle) {
1353 COPY_4V(params, obj->Swizzle);
1361 ; /* silence warnings */
1365 _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)",
1368 _mesa_unlock_texture(ctx, obj);
1372 /** New in GL 3.0 */
1374 _mesa_GetTexParameterIiv(GLenum target, GLenum pname, GLint *params)
1376 struct gl_texture_object *texObj;
1377 GET_CURRENT_CONTEXT(ctx);
1378 ASSERT_OUTSIDE_BEGIN_END(ctx);
1380 texObj = get_texobj(ctx, target, GL_TRUE);
1383 case GL_TEXTURE_BORDER_COLOR:
1384 COPY_4V(params, texObj->BorderColor.i);
1387 _mesa_GetTexParameteriv(target, pname, params);
1392 /** New in GL 3.0 */
1394 _mesa_GetTexParameterIuiv(GLenum target, GLenum pname, GLuint *params)
1396 struct gl_texture_object *texObj;
1397 GET_CURRENT_CONTEXT(ctx);
1398 ASSERT_OUTSIDE_BEGIN_END(ctx);
1400 texObj = get_texobj(ctx, target, GL_TRUE);
1403 case GL_TEXTURE_BORDER_COLOR:
1404 COPY_4V(params, texObj->BorderColor.i);
1409 _mesa_GetTexParameteriv(target, pname, ip);
1411 if (pname == GL_TEXTURE_SWIZZLE_RGBA_EXT ||
1412 pname == GL_TEXTURE_CROP_RECT_OES) {