st_context.c revision af69d88d 
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_condrender.h"
47#include "st_cb_drawpixels.h"
48#include "st_cb_rasterpos.h"
49#include "st_cb_drawtex.h"
50#include "st_cb_eglimage.h"
51#include "st_cb_fbo.h"
52#include "st_cb_feedback.h"
53#include "st_cb_msaa.h"
54#include "st_cb_program.h"
55#include "st_cb_queryobj.h"
56#include "st_cb_readpixels.h"
57#include "st_cb_texture.h"
58#include "st_cb_xformfb.h"
59#include "st_cb_flush.h"
60#include "st_cb_syncobj.h"
61#include "st_cb_strings.h"
62#include "st_cb_texturebarrier.h"
63#include "st_cb_viewport.h"
64#include "st_atom.h"
65#include "st_draw.h"
66#include "st_extensions.h"
67#include "st_gen_mipmap.h"
68#include "st_program.h"
69#include "st_vdpau.h"
70#include "st_texture.h"
71#include "pipe/p_context.h"
72#include "util/u_inlines.h"
73#include "util/u_upload_mgr.h"
74#include "cso_cache/cso_context.h"
75
76
77DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
78
79
80/**
81 * Called via ctx->Driver.UpdateState()
82 */
83void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
84{
85   struct st_context *st = st_context(ctx);
86
87   /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
88   if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
89      new_state &= ~_NEW_FRAG_CLAMP;
90      st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
91   }
92
93   /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
94   if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
95      st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
96   }
97
98   st->dirty.mesa |= new_state;
99   st->dirty.st |= ST_NEW_MESA;
100
101   /* This is the only core Mesa module we depend upon.
102    * No longer use swrast, swsetup, tnl.
103    */
104   _vbo_InvalidateState(ctx, new_state);
105}
106
107static struct st_context *
108st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
109		const struct st_config_options *options)
110{
111   struct pipe_screen *screen = pipe->screen;
112   uint i;
113   struct st_context *st = ST_CALLOC_STRUCT( st_context );
114
115   st->options = *options;
116
117   ctx->st = st;
118
119   st->ctx = ctx;
120   st->pipe = pipe;
121
122   /* XXX: this is one-off, per-screen init: */
123   st_debug_init();
124
125   /* state tracker needs the VBO module */
126   _vbo_CreateContext(ctx);
127
128   st->dirty.mesa = ~0;
129   st->dirty.st = ~0;
130
131   /* Create upload manager for vertex data for glBitmap, glDrawPixels,
132    * glClear, etc.
133    */
134   st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
135
136   if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
137      st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
138                                              PIPE_BIND_INDEX_BUFFER);
139   }
140
141   if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
142      unsigned alignment =
143         screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
144
145      st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
146                                              PIPE_BIND_CONSTANT_BUFFER);
147   }
148
149   st->cso_context = cso_create_context(pipe);
150
151   st_init_atoms( st );
152   st_init_bitmap(st);
153   st_init_clear(st);
154   st_init_draw( st );
155
156   /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
157   if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
158      st->internal_target = PIPE_TEXTURE_2D;
159   else
160      st->internal_target = PIPE_TEXTURE_RECT;
161
162   /* Vertex element objects used for drawing rectangles for glBitmap,
163    * glDrawPixels, glClear, etc.
164    */
165   for (i = 0; i < Elements(st->velems_util_draw); i++) {
166      memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
167      st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
168      st->velems_util_draw[i].instance_divisor = 0;
169      st->velems_util_draw[i].vertex_buffer_index =
170            cso_get_aux_vertex_buffer_slot(st->cso_context);
171      st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
172   }
173
174   /* we want all vertex data to be placed in buffer objects */
175   vbo_use_buffer_objects(ctx);
176
177
178   /* make sure that no VBOs are left mapped when we're drawing. */
179   vbo_always_unmap_buffers(ctx);
180
181   /* Need these flags:
182    */
183   st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
184
185   st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
186
187   st->pixel_xfer.cache = _mesa_new_program_cache();
188
189   st->has_stencil_export =
190      screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
191   st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
192   st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
193                                              PIPE_TEXTURE_2D, 0,
194                                              PIPE_BIND_SAMPLER_VIEW);
195   st->prefer_blit_based_texture_transfer = screen->get_param(screen,
196                              PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
197
198   st->needs_texcoord_semantic =
199      screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
200   st->apply_texture_swizzle_to_border_color =
201      !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
202         (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
203          PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
204   st->has_time_elapsed =
205      screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
206
207   /* GL limits and extensions */
208   st_init_limits(st->pipe->screen, &ctx->Const, &ctx->Extensions);
209   st_init_extensions(st->pipe->screen, ctx->API, &ctx->Const,
210                      &ctx->Extensions, &st->options, ctx->Mesa_DXTn);
211
212   /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
213   if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
214      if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
215         st->clamp_vert_color_in_shader = GL_TRUE;
216      }
217
218      if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
219         st->clamp_frag_color_in_shader = GL_TRUE;
220      }
221
222      /* For drivers which cannot do color clamping, it's better to just
223       * disable ARB_color_buffer_float in the core profile, because
224       * the clamping is deprecated there anyway. */
225      if (ctx->API == API_OPENGL_CORE &&
226          (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
227         st->clamp_vert_color_in_shader = GL_FALSE;
228         st->clamp_frag_color_in_shader = GL_FALSE;
229         ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
230      }
231   }
232
233   /* called after _mesa_create_context/_mesa_init_point, fix default user
234    * settable max point size up
235    */
236   st->ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
237                                 ctx->Const.MaxPointSizeAA);
238
239   _mesa_compute_version(ctx);
240
241   _mesa_initialize_dispatch_tables(ctx);
242   _mesa_initialize_vbo_vtxfmt(ctx);
243
244   return st;
245}
246
247static void st_init_driver_flags(struct gl_driver_flags *f)
248{
249   f->NewArray = ST_NEW_VERTEX_ARRAYS;
250   f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
251   f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
252}
253
254struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
255                                     const struct gl_config *visual,
256                                     struct st_context *share,
257                                     const struct st_config_options *options)
258{
259   struct gl_context *ctx;
260   struct gl_context *shareCtx = share ? share->ctx : NULL;
261   struct dd_function_table funcs;
262
263   memset(&funcs, 0, sizeof(funcs));
264   st_init_driver_functions(&funcs);
265
266   ctx = _mesa_create_context(api, visual, shareCtx, &funcs);
267   if (!ctx) {
268      return NULL;
269   }
270
271   st_init_driver_flags(&ctx->DriverFlags);
272
273   /* XXX: need a capability bit in gallium to query if the pipe
274    * driver prefers DP4 or MUL/MAD for vertex transformation.
275    */
276   if (debug_get_option_mesa_mvp_dp4())
277      ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
278
279   return st_create_context_priv(ctx, pipe, options);
280}
281
282
283static void st_destroy_context_priv( struct st_context *st )
284{
285   uint shader, i;
286
287   st_destroy_atoms( st );
288   st_destroy_draw( st );
289   st_destroy_clear(st);
290   st_destroy_bitmap(st);
291   st_destroy_drawpix(st);
292   st_destroy_drawtex(st);
293
294   for (shader = 0; shader < Elements(st->state.sampler_views); shader++) {
295      for (i = 0; i < Elements(st->state.sampler_views[0]); i++) {
296         pipe_sampler_view_release(st->pipe,
297                                   &st->state.sampler_views[shader][i]);
298      }
299   }
300
301   if (st->default_texture) {
302      st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
303      st->default_texture = NULL;
304   }
305
306   u_upload_destroy(st->uploader);
307   if (st->indexbuf_uploader) {
308      u_upload_destroy(st->indexbuf_uploader);
309   }
310   if (st->constbuf_uploader) {
311      u_upload_destroy(st->constbuf_uploader);
312   }
313   free( st );
314}
315
316
317/**
318 * Callback to release the sampler view attached to a texture object.
319 * Called by _mesa_HashWalk().
320 */
321static void
322destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
323{
324   struct gl_texture_object *texObj = (struct gl_texture_object *) data;
325   struct st_context *st = (struct st_context *) userData;
326
327   st_texture_release_sampler_view(st, st_texture_object(texObj));
328}
329
330void st_destroy_context( struct st_context *st )
331{
332   struct pipe_context *pipe = st->pipe;
333   struct cso_context *cso = st->cso_context;
334   struct gl_context *ctx = st->ctx;
335   GLuint i;
336
337   _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
338
339   /* need to unbind and destroy CSO objects before anything else */
340   cso_release_all(st->cso_context);
341
342   st_reference_fragprog(st, &st->fp, NULL);
343   st_reference_geomprog(st, &st->gp, NULL);
344   st_reference_vertprog(st, &st->vp, NULL);
345
346   /* release framebuffer surfaces */
347   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
348      pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
349   }
350   pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
351
352   pipe->set_index_buffer(pipe, NULL);
353
354   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
355      pipe->set_constant_buffer(pipe, i, 0, NULL);
356   }
357
358   _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
359
360   _vbo_DestroyContext(st->ctx);
361
362   st_destroy_program_variants(st);
363
364   _mesa_free_context_data(ctx);
365
366   /* This will free the st_context too, so 'st' must not be accessed
367    * afterwards. */
368   st_destroy_context_priv(st);
369   st = NULL;
370
371   cso_destroy_context(cso);
372
373   pipe->destroy( pipe );
374
375   free(ctx);
376}
377
378
379void st_init_driver_functions(struct dd_function_table *functions)
380{
381   _mesa_init_shader_object_functions(functions);
382   _mesa_init_sampler_object_functions(functions);
383
384   functions->Accum = _mesa_accum;
385
386   st_init_blit_functions(functions);
387   st_init_bufferobject_functions(functions);
388   st_init_clear_functions(functions);
389   st_init_bitmap_functions(functions);
390   st_init_drawpixels_functions(functions);
391   st_init_rasterpos_functions(functions);
392
393   st_init_drawtex_functions(functions);
394
395   st_init_eglimage_functions(functions);
396
397   st_init_fbo_functions(functions);
398   st_init_feedback_functions(functions);
399   st_init_msaa_functions(functions);
400   st_init_program_functions(functions);
401   st_init_query_functions(functions);
402   st_init_cond_render_functions(functions);
403   st_init_readpixels_functions(functions);
404   st_init_texture_functions(functions);
405   st_init_texture_barrier_functions(functions);
406   st_init_flush_functions(functions);
407   st_init_string_functions(functions);
408   st_init_viewport_functions(functions);
409
410   st_init_xformfb_functions(functions);
411   st_init_syncobj_functions(functions);
412
413   st_init_vdpau_functions(functions);
414
415   functions->UpdateState = st_invalidate_state;
416}
417