1/**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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 VMWARE 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.
25 *
26 **************************************************************************/
27
28#include "main/imports.h"
29#include "main/accum.h"
30#include "main/api_exec.h"
31#include "main/context.h"
32#include "main/samplerobj.h"
33#include "main/shaderobj.h"
34#include "main/version.h"
35#include "main/vtxfmt.h"
36#include "main/hash.h"
37#include "program/prog_cache.h"
38#include "vbo/vbo.h"
39#include "glapi/glapi.h"
40#include "st_context.h"
41#include "st_debug.h"
42#include "st_cb_bitmap.h"
43#include "st_cb_blit.h"
44#include "st_cb_bufferobjects.h"
45#include "st_cb_clear.h"
46#include "st_cb_compute.h"
47#include "st_cb_condrender.h"
48#include "st_cb_copyimage.h"
49#include "st_cb_drawpixels.h"
50#include "st_cb_rasterpos.h"
51#include "st_cb_drawtex.h"
52#include "st_cb_eglimage.h"
53#include "st_cb_fbo.h"
54#include "st_cb_feedback.h"
55#include "st_cb_msaa.h"
56#include "st_cb_perfmon.h"
57#include "st_cb_program.h"
58#include "st_cb_queryobj.h"
59#include "st_cb_readpixels.h"
60#include "st_cb_texture.h"
61#include "st_cb_xformfb.h"
62#include "st_cb_flush.h"
63#include "st_cb_syncobj.h"
64#include "st_cb_strings.h"
65#include "st_cb_texturebarrier.h"
66#include "st_cb_viewport.h"
67#include "st_atom.h"
68#include "st_draw.h"
69#include "st_extensions.h"
70#include "st_gen_mipmap.h"
71#include "st_pbo.h"
72#include "st_program.h"
73#include "st_sampler_view.h"
74#include "st_vdpau.h"
75#include "st_texture.h"
76#include "pipe/p_context.h"
77#include "util/u_inlines.h"
78#include "util/u_upload_mgr.h"
79#include "cso_cache/cso_context.h"
80
81
82DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
83
84
85/**
86 * Called via ctx->Driver.Enable()
87 */
88static void st_Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
89{
90   struct st_context *st = st_context(ctx);
91
92   switch (cap) {
93   case GL_DEBUG_OUTPUT:
94   case GL_DEBUG_OUTPUT_SYNCHRONOUS:
95      st_update_debug_callback(st);
96      break;
97   default:
98      break;
99   }
100}
101
102
103/**
104 * Called via ctx->Driver.QueryMemoryInfo()
105 */
106static void
107st_query_memory_info(struct gl_context *ctx, struct gl_memory_info *out)
108{
109   struct pipe_screen *screen = st_context(ctx)->pipe->screen;
110   struct pipe_memory_info info;
111
112   assert(screen->query_memory_info);
113   if (!screen->query_memory_info)
114      return;
115
116   screen->query_memory_info(screen, &info);
117
118   out->total_device_memory = info.total_device_memory;
119   out->avail_device_memory = info.avail_device_memory;
120   out->total_staging_memory = info.total_staging_memory;
121   out->avail_staging_memory = info.avail_staging_memory;
122   out->device_memory_evicted = info.device_memory_evicted;
123   out->nr_device_memory_evictions = info.nr_device_memory_evictions;
124}
125
126
127uint64_t
128st_get_active_states(struct gl_context *ctx)
129{
130   struct st_vertex_program *vp =
131      st_vertex_program(ctx->VertexProgram._Current);
132   struct st_tessctrl_program *tcp =
133      st_tessctrl_program(ctx->TessCtrlProgram._Current);
134   struct st_tesseval_program *tep =
135      st_tesseval_program(ctx->TessEvalProgram._Current);
136   struct st_geometry_program *gp =
137      st_geometry_program(ctx->GeometryProgram._Current);
138   struct st_fragment_program *fp =
139      st_fragment_program(ctx->FragmentProgram._Current);
140   struct st_compute_program *cp =
141      st_compute_program(ctx->ComputeProgram._Current);
142   uint64_t active_shader_states = 0;
143
144   if (vp)
145      active_shader_states |= vp->affected_states;
146   if (tcp)
147      active_shader_states |= tcp->affected_states;
148   if (tep)
149      active_shader_states |= tep->affected_states;
150   if (gp)
151      active_shader_states |= gp->affected_states;
152   if (fp)
153      active_shader_states |= fp->affected_states;
154   if (cp)
155      active_shader_states |= cp->affected_states;
156
157   /* Mark non-shader-resource shader states as "always active". */
158   return active_shader_states | ~ST_ALL_SHADER_RESOURCES;
159}
160
161
162/**
163 * Called via ctx->Driver.UpdateState()
164 */
165void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state)
166{
167   struct st_context *st = st_context(ctx);
168
169   if (new_state & _NEW_BUFFERS) {
170      st->dirty |= ST_NEW_BLEND |
171                   ST_NEW_DSA |
172                   ST_NEW_FB_STATE |
173                   ST_NEW_SAMPLE_MASK |
174                   ST_NEW_SAMPLE_SHADING |
175                   ST_NEW_FS_STATE |
176                   ST_NEW_POLY_STIPPLE |
177                   ST_NEW_VIEWPORT |
178                   ST_NEW_RASTERIZER |
179                   ST_NEW_SCISSOR |
180                   ST_NEW_WINDOW_RECTANGLES;
181   } else {
182      /* These set a subset of flags set by _NEW_BUFFERS, so we only have to
183       * check them when _NEW_BUFFERS isn't set.
184       */
185      if (new_state & (_NEW_DEPTH |
186                       _NEW_STENCIL))
187         st->dirty |= ST_NEW_DSA;
188
189      if (new_state & _NEW_PROGRAM)
190         st->dirty |= ST_NEW_RASTERIZER;
191
192      if (new_state & _NEW_SCISSOR)
193         st->dirty |= ST_NEW_RASTERIZER |
194                      ST_NEW_SCISSOR |
195                      ST_NEW_WINDOW_RECTANGLES;
196
197      if (new_state & _NEW_FOG)
198         st->dirty |= ST_NEW_FS_STATE;
199
200      if (new_state & _NEW_POLYGONSTIPPLE)
201         st->dirty |= ST_NEW_POLY_STIPPLE;
202
203      if (new_state & _NEW_VIEWPORT)
204         st->dirty |= ST_NEW_VIEWPORT;
205
206      if (new_state & _NEW_FRAG_CLAMP) {
207         if (st->clamp_frag_color_in_shader)
208            st->dirty |= ST_NEW_FS_STATE;
209         else
210            st->dirty |= ST_NEW_RASTERIZER;
211      }
212   }
213
214   if (new_state & _NEW_MULTISAMPLE) {
215      st->dirty |= ST_NEW_BLEND |
216                   ST_NEW_SAMPLE_MASK |
217                   ST_NEW_SAMPLE_SHADING |
218                   ST_NEW_RASTERIZER |
219                   ST_NEW_FS_STATE;
220   } else {
221      /* These set a subset of flags set by _NEW_MULTISAMPLE, so we only
222       * have to check them when _NEW_MULTISAMPLE isn't set.
223       */
224      if (new_state & (_NEW_LIGHT |
225                       _NEW_LINE |
226                       _NEW_POINT |
227                       _NEW_POLYGON |
228                       _NEW_TRANSFORM))
229         st->dirty |= ST_NEW_RASTERIZER;
230   }
231
232   if (new_state & (_NEW_PROJECTION |
233                    _NEW_TRANSFORM) &&
234       st_user_clip_planes_enabled(ctx))
235      st->dirty |= ST_NEW_CLIP_STATE;
236
237   if (new_state & _NEW_COLOR)
238      st->dirty |= ST_NEW_BLEND |
239                   ST_NEW_DSA;
240
241   if (new_state & _NEW_PIXEL)
242      st->dirty |= ST_NEW_PIXEL_TRANSFER;
243
244   if (new_state & _NEW_CURRENT_ATTRIB)
245      st->dirty |= ST_NEW_VERTEX_ARRAYS;
246
247   /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
248   if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT))
249      st->dirty |= ST_NEW_VS_STATE;
250
251   /* Which shaders are dirty will be determined manually. */
252   if (new_state & _NEW_PROGRAM) {
253      st->gfx_shaders_may_be_dirty = true;
254      st->compute_shader_may_be_dirty = true;
255      /* This will mask out unused shader resources. */
256      st->active_states = st_get_active_states(ctx);
257   }
258
259   if (new_state & _NEW_TEXTURE) {
260      st->dirty |= st->active_states &
261                   (ST_NEW_SAMPLER_VIEWS |
262                    ST_NEW_SAMPLERS |
263                    ST_NEW_IMAGE_UNITS);
264      if (ctx->FragmentProgram._Current &&
265          ctx->FragmentProgram._Current->ExternalSamplersUsed) {
266         st->dirty |= ST_NEW_FS_STATE;
267      }
268   }
269
270   if (new_state & _NEW_PROGRAM_CONSTANTS)
271      st->dirty |= st->active_states & ST_NEW_CONSTANTS;
272
273   /* This is the only core Mesa module we depend upon.
274    * No longer use swrast, swsetup, tnl.
275    */
276   _vbo_InvalidateState(ctx, new_state);
277}
278
279
280static void
281st_destroy_context_priv(struct st_context *st, bool destroy_pipe)
282{
283   uint shader, i;
284
285   st_destroy_atoms( st );
286   st_destroy_draw( st );
287   st_destroy_clear(st);
288   st_destroy_bitmap(st);
289   st_destroy_drawpix(st);
290   st_destroy_drawtex(st);
291   st_destroy_perfmon(st);
292   st_destroy_pbo_helpers(st);
293
294   for (shader = 0; shader < ARRAY_SIZE(st->state.sampler_views); shader++) {
295      for (i = 0; i < ARRAY_SIZE(st->state.sampler_views[0]); i++) {
296         pipe_sampler_view_release(st->pipe,
297                                   &st->state.sampler_views[shader][i]);
298      }
299   }
300
301   u_upload_destroy(st->uploader);
302   if (st->indexbuf_uploader) {
303      u_upload_destroy(st->indexbuf_uploader);
304   }
305   if (st->constbuf_uploader) {
306      u_upload_destroy(st->constbuf_uploader);
307   }
308
309   /* free glDrawPixels cache data */
310   free(st->drawpix_cache.image);
311   pipe_resource_reference(&st->drawpix_cache.texture, NULL);
312
313   /* free glReadPixels cache data */
314   st_invalidate_readpix_cache(st);
315
316   cso_destroy_context(st->cso_context);
317
318   if (st->pipe && destroy_pipe)
319      st->pipe->destroy(st->pipe);
320
321   free( st );
322}
323
324
325static struct st_context *
326st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
327		const struct st_config_options *options)
328{
329   struct pipe_screen *screen = pipe->screen;
330   uint i;
331   struct st_context *st = ST_CALLOC_STRUCT( st_context );
332
333   st->options = *options;
334
335   ctx->st = st;
336
337   st->ctx = ctx;
338   st->pipe = pipe;
339
340   /* XXX: this is one-off, per-screen init: */
341   st_debug_init();
342
343   /* state tracker needs the VBO module */
344   _vbo_CreateContext(ctx);
345
346   st->dirty = ST_ALL_STATES_MASK;
347
348   /* Create upload manager for vertex data for glBitmap, glDrawPixels,
349    * glClear, etc.
350    */
351   st->uploader = u_upload_create(pipe, 65536, PIPE_BIND_VERTEX_BUFFER,
352                                  PIPE_USAGE_STREAM);
353
354   if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
355      st->indexbuf_uploader = u_upload_create(pipe, 128 * 1024,
356                                              PIPE_BIND_INDEX_BUFFER,
357                                              PIPE_USAGE_STREAM);
358   }
359
360   if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS))
361      st->constbuf_uploader = u_upload_create(pipe, 128 * 1024,
362                                              PIPE_BIND_CONSTANT_BUFFER,
363                                              PIPE_USAGE_STREAM);
364
365   st->cso_context = cso_create_context(pipe);
366
367   st_init_atoms( st );
368   st_init_clear(st);
369   st_init_draw( st );
370   st_init_pbo_helpers(st);
371
372   /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
373   if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
374      st->internal_target = PIPE_TEXTURE_2D;
375   else
376      st->internal_target = PIPE_TEXTURE_RECT;
377
378   /* Setup vertex element info for 'struct st_util_vertex'.
379    */
380   {
381      const unsigned slot = cso_get_aux_vertex_buffer_slot(st->cso_context);
382
383      /* If this assertion ever fails all state tracker calls to
384       * cso_get_aux_vertex_buffer_slot() should be audited.  This
385       * particular call would have to be moved to just before each
386       * drawing call.
387       */
388      assert(slot == 0);
389
390      STATIC_ASSERT(sizeof(struct st_util_vertex) == 9 * sizeof(float));
391
392      memset(&st->util_velems, 0, sizeof(st->util_velems));
393      st->util_velems[0].src_offset = 0;
394      st->util_velems[0].vertex_buffer_index = slot;
395      st->util_velems[0].src_format = PIPE_FORMAT_R32G32B32_FLOAT;
396      st->util_velems[1].src_offset = 3 * sizeof(float);
397      st->util_velems[1].vertex_buffer_index = slot;
398      st->util_velems[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
399      st->util_velems[2].src_offset = 7 * sizeof(float);
400      st->util_velems[2].vertex_buffer_index = slot;
401      st->util_velems[2].src_format = PIPE_FORMAT_R32G32_FLOAT;
402   }
403
404   /* we want all vertex data to be placed in buffer objects */
405   vbo_use_buffer_objects(ctx);
406
407
408   /* make sure that no VBOs are left mapped when we're drawing. */
409   vbo_always_unmap_buffers(ctx);
410
411   /* Need these flags:
412    */
413   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
414
415   ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
416
417   st->has_stencil_export =
418      screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
419   st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
420   st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
421                                              PIPE_TEXTURE_2D, 0,
422                                              PIPE_BIND_SAMPLER_VIEW);
423   st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
424                                              PIPE_TEXTURE_2D, 0,
425                                              PIPE_BIND_SAMPLER_VIEW);
426   st->prefer_blit_based_texture_transfer = screen->get_param(screen,
427                              PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
428   st->force_persample_in_shader =
429      screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
430      !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
431   st->has_shareable_shaders = screen->get_param(screen,
432                                                 PIPE_CAP_SHAREABLE_SHADERS);
433   st->needs_texcoord_semantic =
434      screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
435   st->apply_texture_swizzle_to_border_color =
436      !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
437         (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
438          PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
439   st->has_time_elapsed =
440      screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
441   st->has_half_float_packing =
442      screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
443   st->has_multi_draw_indirect =
444      screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
445
446   /* GL limits and extensions */
447   st_init_limits(pipe->screen, &ctx->Const, &ctx->Extensions);
448   st_init_extensions(pipe->screen, &ctx->Const,
449                      &ctx->Extensions, &st->options, ctx->Mesa_DXTn);
450
451   if (st_have_perfmon(st)) {
452      ctx->Extensions.AMD_performance_monitor = GL_TRUE;
453   }
454
455   /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
456   if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
457      if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
458         st->clamp_vert_color_in_shader = GL_TRUE;
459      }
460
461      if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
462         st->clamp_frag_color_in_shader = GL_TRUE;
463      }
464
465      /* For drivers which cannot do color clamping, it's better to just
466       * disable ARB_color_buffer_float in the core profile, because
467       * the clamping is deprecated there anyway. */
468      if (ctx->API == API_OPENGL_CORE &&
469          (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
470         st->clamp_vert_color_in_shader = GL_FALSE;
471         st->clamp_frag_color_in_shader = GL_FALSE;
472         ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
473      }
474   }
475
476   /* called after _mesa_create_context/_mesa_init_point, fix default user
477    * settable max point size up
478    */
479   ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
480                             ctx->Const.MaxPointSizeAA);
481   /* For vertex shaders, make sure not to emit saturate when SM 3.0 is not supported */
482   ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat = !st->has_shader_model3;
483
484   if (!ctx->Extensions.ARB_gpu_shader5) {
485      for (i = 0; i < MESA_SHADER_STAGES; i++)
486         ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
487   }
488
489   /* Set which shader types can be compiled at link time. */
490   st->shader_has_one_variant[MESA_SHADER_VERTEX] =
491         st->has_shareable_shaders &&
492         !st->clamp_vert_color_in_shader;
493
494   st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
495         st->has_shareable_shaders &&
496         !st->clamp_frag_color_in_shader &&
497         !st->force_persample_in_shader;
498
499   st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
500   st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] = st->has_shareable_shaders;
501   st->shader_has_one_variant[MESA_SHADER_GEOMETRY] = st->has_shareable_shaders;
502   st->shader_has_one_variant[MESA_SHADER_COMPUTE] = st->has_shareable_shaders;
503
504   _mesa_compute_version(ctx);
505
506   if (ctx->Version == 0) {
507      /* This can happen when a core profile was requested, but the driver
508       * does not support some features of GL 3.1 or later.
509       */
510      st_destroy_context_priv(st, false);
511      return NULL;
512   }
513
514   _mesa_initialize_dispatch_tables(ctx);
515   _mesa_initialize_vbo_vtxfmt(ctx);
516
517   return st;
518}
519
520static void st_init_driver_flags(struct gl_driver_flags *f)
521{
522   f->NewArray = ST_NEW_VERTEX_ARRAYS;
523   f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
524   f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
525   f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
526   f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
527   f->NewAtomicBuffer = ST_NEW_ATOMIC_BUFFER;
528   f->NewShaderStorageBuffer = ST_NEW_STORAGE_BUFFER;
529   f->NewImageUnits = ST_NEW_IMAGE_UNITS;
530}
531
532struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
533                                     const struct gl_config *visual,
534                                     struct st_context *share,
535                                     const struct st_config_options *options)
536{
537   struct gl_context *ctx;
538   struct gl_context *shareCtx = share ? share->ctx : NULL;
539   struct dd_function_table funcs;
540   struct st_context *st;
541
542   memset(&funcs, 0, sizeof(funcs));
543   st_init_driver_functions(pipe->screen, &funcs);
544
545   ctx = calloc(1, sizeof(struct gl_context));
546   if (!ctx)
547      return NULL;
548
549   if (!_mesa_initialize_context(ctx, api, visual, shareCtx, &funcs)) {
550      free(ctx);
551      return NULL;
552   }
553
554   st_init_driver_flags(&ctx->DriverFlags);
555
556   /* XXX: need a capability bit in gallium to query if the pipe
557    * driver prefers DP4 or MUL/MAD for vertex transformation.
558    */
559   if (debug_get_option_mesa_mvp_dp4())
560      ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
561
562   st = st_create_context_priv(ctx, pipe, options);
563   if (!st) {
564      _mesa_destroy_context(ctx);
565   }
566
567   return st;
568}
569
570
571/**
572 * Callback to release the sampler view attached to a texture object.
573 * Called by _mesa_HashWalk().
574 */
575static void
576destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
577{
578   struct gl_texture_object *texObj = (struct gl_texture_object *) data;
579   struct st_context *st = (struct st_context *) userData;
580
581   st_texture_release_sampler_view(st, st_texture_object(texObj));
582}
583
584void st_destroy_context( struct st_context *st )
585{
586   struct gl_context *ctx = st->ctx;
587   GLuint i;
588
589   _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
590
591   st_reference_fragprog(st, &st->fp, NULL);
592   st_reference_geomprog(st, &st->gp, NULL);
593   st_reference_vertprog(st, &st->vp, NULL);
594   st_reference_tesscprog(st, &st->tcp, NULL);
595   st_reference_tesseprog(st, &st->tep, NULL);
596   st_reference_compprog(st, &st->cp, NULL);
597
598   /* release framebuffer surfaces */
599   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
600      pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
601   }
602   pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
603   pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
604   pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
605
606   _vbo_DestroyContext(ctx);
607
608   st_destroy_program_variants(st);
609
610   _mesa_free_context_data(ctx);
611
612   /* This will free the st_context too, so 'st' must not be accessed
613    * afterwards. */
614   st_destroy_context_priv(st, true);
615   st = NULL;
616
617   free(ctx);
618}
619
620static void
621st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
622{
623   struct st_context *st = ctx->st;
624   st->pipe->emit_string_marker(st->pipe, string, len);
625}
626
627void st_init_driver_functions(struct pipe_screen *screen,
628                              struct dd_function_table *functions)
629{
630   _mesa_init_shader_object_functions(functions);
631   _mesa_init_sampler_object_functions(functions);
632
633   st_init_blit_functions(functions);
634   st_init_bufferobject_functions(screen, functions);
635   st_init_clear_functions(functions);
636   st_init_bitmap_functions(functions);
637   st_init_copy_image_functions(functions);
638   st_init_drawpixels_functions(functions);
639   st_init_rasterpos_functions(functions);
640
641   st_init_drawtex_functions(functions);
642
643   st_init_eglimage_functions(functions);
644
645   st_init_fbo_functions(functions);
646   st_init_feedback_functions(functions);
647   st_init_msaa_functions(functions);
648   st_init_perfmon_functions(functions);
649   st_init_program_functions(functions);
650   st_init_query_functions(functions);
651   st_init_cond_render_functions(functions);
652   st_init_readpixels_functions(functions);
653   st_init_texture_functions(functions);
654   st_init_texture_barrier_functions(functions);
655   st_init_flush_functions(screen, functions);
656   st_init_string_functions(functions);
657   st_init_viewport_functions(functions);
658   st_init_compute_functions(functions);
659
660   st_init_xformfb_functions(functions);
661   st_init_syncobj_functions(functions);
662
663   st_init_vdpau_functions(functions);
664
665   if (screen->get_param(screen, PIPE_CAP_STRING_MARKER))
666      functions->EmitStringMarker = st_emit_string_marker;
667
668   functions->Enable = st_Enable;
669   functions->UpdateState = st_invalidate_state;
670   functions->QueryMemoryInfo = st_query_memory_info;
671}
672