1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
31 #include "main/mtypes.h"
32 #include "pipe/p_state.h"
33 #include "state_tracker/st_api.h"
34 #include "main/fbobject.h"
38 struct dd_function_table;
41 struct gen_mipmap_state;
43 struct st_fragment_program;
47 #define ST_NEW_MESA (1 << 0) /* Mesa state has changed */
48 #define ST_NEW_FRAGMENT_PROGRAM (1 << 1)
49 #define ST_NEW_VERTEX_PROGRAM (1 << 2)
50 #define ST_NEW_FRAMEBUFFER (1 << 3)
51 #define ST_NEW_EDGEFLAGS_DATA (1 << 4)
52 #define ST_NEW_GEOMETRY_PROGRAM (1 << 5)
53 #define ST_NEW_VERTEX_ARRAYS (1 << 6)
56 struct st_state_flags {
61 struct st_tracked_state {
63 struct st_state_flags dirty;
64 void (*update)( struct st_context *st );
71 struct st_context_iface iface;
73 struct gl_context *ctx;
75 struct pipe_context *pipe;
77 struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
79 struct draw_context *draw; /**< For selection/feedback/rastpos only */
80 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */
81 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */
82 struct draw_stage *rastpos_stage; /**< For glRasterPos */
83 GLboolean clamp_frag_color_in_shader;
84 GLboolean clamp_vert_color_in_shader;
85 boolean has_stencil_export; /**< can do shader stencil export? */
87 /* On old libGL's for linux we need to invalidate the drawables
88 * on glViewpport calls, this is set via a option.
90 boolean invalidate_on_gl_viewport;
92 boolean vertex_array_out_of_memory;
94 /* Some state is contained in constant objects.
95 * Other state is just parameter values.
98 struct pipe_blend_state blend;
99 struct pipe_depth_stencil_alpha_state depth_stencil;
100 struct pipe_rasterizer_state rasterizer;
101 struct pipe_sampler_state fragment_samplers[PIPE_MAX_SAMPLERS];
102 struct pipe_sampler_state vertex_samplers[PIPE_MAX_VERTEX_SAMPLERS];
103 struct pipe_clip_state clip;
107 } constants[PIPE_SHADER_TYPES];
108 struct pipe_framebuffer_state framebuffer;
109 struct pipe_sampler_view *fragment_sampler_views[PIPE_MAX_SAMPLERS];
110 struct pipe_sampler_view *vertex_sampler_views[PIPE_MAX_VERTEX_SAMPLERS];
111 struct pipe_scissor_state scissor;
112 struct pipe_viewport_state viewport;
113 unsigned sample_mask;
115 GLuint num_fragment_samplers;
116 GLuint num_vertex_samplers;
117 GLuint num_fragment_textures;
118 GLuint num_vertex_textures;
120 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */
122 GLuint fb_orientation;
128 struct st_state_flags dirty;
130 GLboolean missing_textures;
131 GLboolean vertdata_edgeflags;
133 /** Mapping from VERT_RESULT_x to post-transformed vertex slot */
134 const GLuint *vertex_result_to_slot;
136 struct st_vertex_program *vp; /**< Currently bound vertex program */
137 struct st_fragment_program *fp; /**< Currently bound fragment program */
138 struct st_geometry_program *gp; /**< Currently bound geometry program */
140 struct st_vp_variant *vp_variant;
141 struct st_fp_variant *fp_variant;
142 struct st_gp_variant *gp_variant;
144 struct gl_texture_object *default_texture;
147 struct gl_program_cache *cache;
148 struct st_fragment_program *program; /**< cur pixel transfer prog */
149 GLuint xfer_prog_sn; /**< pixel xfer program serial no. */
150 GLuint user_prog_sn; /**< user fragment program serial no. */
151 struct st_fragment_program *combined_prog;
152 GLuint combined_prog_sn;
153 struct pipe_resource *pixelmap_texture;
154 struct pipe_sampler_view *pixelmap_sampler_view;
155 boolean pixelmap_enabled; /**< use the pixelmap texture? */
160 struct pipe_rasterizer_state rasterizer;
161 struct pipe_sampler_state samplers[2];
162 enum pipe_format tex_format;
164 struct bitmap_cache *cache;
167 /** for glDraw/CopyPixels */
169 struct gl_fragment_program *shaders[4];
170 void *vert_shaders[2]; /**< ureg shaders */
175 struct pipe_rasterizer_state raster;
176 struct pipe_viewport_state viewport;
179 boolean enable_ds_separate;
182 /** used for anything using util_draw_vertex_buffer */
183 struct pipe_vertex_element velems_util_draw[3];
185 void *passthrough_fs; /**< simple pass-through frag shader */
187 enum pipe_texture_target internal_target;
188 struct gen_mipmap_state *gen_mipmap;
189 struct blit_state *blit;
191 struct cso_context *cso_context;
194 void *winsys_drawable_handle;
196 /* Active render condition. */
197 struct pipe_query *render_condition;
198 unsigned condition_mode;
205 /* Need this so that we can implement Mesa callbacks in this module.
207 static INLINE struct st_context *st_context(struct gl_context *ctx)
214 * Wrapper for struct gl_framebuffer.
215 * This is an opaque type to the outside world.
217 struct st_framebuffer
219 struct gl_framebuffer Base;
222 struct st_framebuffer_iface *iface;
223 enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
230 extern void st_init_driver_functions(struct dd_function_table *functions);
232 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
240 st_fb_orientation(const struct gl_framebuffer *fb)
242 if (fb && _mesa_is_winsys_fbo(fb)) {
243 /* Drawing into a window (on-screen buffer).
245 * Negate Y scale to flip image vertically.
246 * The NDC Y coords prior to viewport transformation are in the range
247 * [y=-1=bottom, y=1=top]
248 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
249 * H is the window height.
250 * Use the viewport transformation to invert Y.
255 /* Drawing into user-created FBO (very likely a texture).
257 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
264 /** clear-alloc a struct-sized object, with casting */
265 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
271 extern struct st_context *
272 st_create_context(gl_api api, struct pipe_context *pipe,
273 const struct gl_config *visual,
274 struct st_context *share);
277 st_destroy_context(struct st_context *st);