• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 
82 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
83 
84 
85 /**
86  * Called via ctx->Driver.Enable()
87  */
st_Enable(struct gl_context * ctx,GLenum cap,GLboolean state)88 static 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  */
106 static void
st_query_memory_info(struct gl_context * ctx,struct gl_memory_info * out)107 st_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 
127 uint64_t
st_get_active_states(struct gl_context * ctx)128 st_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  */
st_invalidate_state(struct gl_context * ctx,GLbitfield new_state)165 void 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 
280 static void
st_destroy_context_priv(struct st_context * st,bool destroy_pipe)281 st_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 
325 static struct st_context *
st_create_context_priv(struct gl_context * ctx,struct pipe_context * pipe,const struct st_config_options * options)326 st_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 
st_init_driver_flags(struct gl_driver_flags * f)520 static 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 
st_create_context(gl_api api,struct pipe_context * pipe,const struct gl_config * visual,struct st_context * share,const struct st_config_options * options)532 struct 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  */
575 static void
destroy_tex_sampler_cb(GLuint id,void * data,void * userData)576 destroy_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 
st_destroy_context(struct st_context * st)584 void 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 
620 static void
st_emit_string_marker(struct gl_context * ctx,const GLchar * string,GLsizei len)621 st_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 
st_init_driver_functions(struct pipe_screen * screen,struct dd_function_table * functions)627 void 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