st_context.c revision cdc920a0 
1/**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 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.
25 *
26 **************************************************************************/
27
28#include "main/imports.h"
29#include "main/context.h"
30#include "vbo/vbo.h"
31#include "shader/shader_api.h"
32#include "glapi/glapi.h"
33#include "st_public.h"
34#include "st_debug.h"
35#include "st_context.h"
36#include "st_cb_accum.h"
37#include "st_cb_bitmap.h"
38#include "st_cb_blit.h"
39#include "st_cb_bufferobjects.h"
40#include "st_cb_clear.h"
41#include "st_cb_condrender.h"
42#if FEATURE_drawpix
43#include "st_cb_drawpixels.h"
44#include "st_cb_rasterpos.h"
45#endif
46#if FEATURE_OES_draw_texture
47#include "st_cb_drawtex.h"
48#endif
49#include "st_cb_fbo.h"
50#if FEATURE_feedback
51#include "st_cb_feedback.h"
52#endif
53#include "st_cb_program.h"
54#include "st_cb_queryobj.h"
55#include "st_cb_readpixels.h"
56#include "st_cb_texture.h"
57#include "st_cb_flush.h"
58#include "st_cb_strings.h"
59#include "st_atom.h"
60#include "st_draw.h"
61#include "st_extensions.h"
62#include "st_gen_mipmap.h"
63#include "st_program.h"
64#include "pipe/p_context.h"
65#include "util/u_inlines.h"
66#include "draw/draw_context.h"
67#include "cso_cache/cso_context.h"
68
69
70/**
71 * Called via ctx->Driver.UpdateState()
72 */
73void st_invalidate_state(GLcontext * ctx, GLuint new_state)
74{
75   struct st_context *st = st_context(ctx);
76
77   st->dirty.mesa |= new_state;
78   st->dirty.st |= ST_NEW_MESA;
79
80   /* This is the only core Mesa module we depend upon.
81    * No longer use swrast, swsetup, tnl.
82    */
83   _vbo_InvalidateState(ctx, new_state);
84}
85
86
87/**
88 * Check for multisample env var override.
89 */
90int
91st_get_msaa(void)
92{
93   const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
94   if (msaa)
95      return atoi(msaa);
96   return 0;
97}
98
99
100static struct st_context *
101st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
102{
103   uint i;
104   struct st_context *st = ST_CALLOC_STRUCT( st_context );
105
106   ctx->st = st;
107
108   st->ctx = ctx;
109   st->pipe = pipe;
110
111   /* XXX: this is one-off, per-screen init: */
112   st_debug_init();
113
114   /* state tracker needs the VBO module */
115   _vbo_CreateContext(ctx);
116
117#if FEATURE_feedback || FEATURE_drawpix
118   st->draw = draw_create(pipe); /* for selection/feedback */
119
120   /* Disable draw options that might convert points/lines to tris, etc.
121    * as that would foul-up feedback/selection mode.
122    */
123   draw_wide_line_threshold(st->draw, 1000.0f);
124   draw_wide_point_threshold(st->draw, 1000.0f);
125   draw_enable_line_stipple(st->draw, FALSE);
126   draw_enable_point_sprites(st->draw, FALSE);
127#endif
128
129   st->dirty.mesa = ~0;
130   st->dirty.st = ~0;
131
132   st->cso_context = cso_create_context(pipe);
133
134   st_init_atoms( st );
135   st_init_bitmap(st);
136   st_init_clear(st);
137   st_init_draw( st );
138   st_init_generate_mipmap(st);
139   st_init_blit(st);
140
141   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
142      st->state.sampler_list[i] = &st->state.samplers[i];
143
144   /* we want all vertex data to be placed in buffer objects */
145   vbo_use_buffer_objects(ctx);
146
147   /* Need these flags:
148    */
149   st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
150
151   st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
152
153   st->pixel_xfer.cache = _mesa_new_program_cache();
154
155   st->force_msaa = st_get_msaa();
156
157   /* GL limits and extensions */
158   st_init_limits(st);
159   st_init_extensions(st);
160
161   return st;
162}
163
164
165struct st_context *st_create_context(struct pipe_context *pipe,
166                                     const __GLcontextModes *visual,
167                                     struct st_context *share)
168{
169   GLcontext *ctx;
170   GLcontext *shareCtx = share ? share->ctx : NULL;
171   struct dd_function_table funcs;
172
173   memset(&funcs, 0, sizeof(funcs));
174   st_init_driver_functions(&funcs);
175
176   ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);
177
178   /* XXX: need a capability bit in gallium to query if the pipe
179    * driver prefers DP4 or MUL/MAD for vertex transformation.
180    */
181   if (debug_get_bool_option("MESA_MVP_DP4", FALSE))
182      _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
183
184   return st_create_context_priv(ctx, pipe);
185}
186
187
188static void st_destroy_context_priv( struct st_context *st )
189{
190   uint i;
191
192#if FEATURE_feedback || FEATURE_drawpix
193   draw_destroy(st->draw);
194#endif
195   st_destroy_atoms( st );
196   st_destroy_draw( st );
197   st_destroy_generate_mipmap(st);
198#if FEATURE_EXT_framebuffer_blit
199   st_destroy_blit(st);
200#endif
201   st_destroy_clear(st);
202#if FEATURE_drawpix
203   st_destroy_bitmap(st);
204   st_destroy_drawpix(st);
205#endif
206#if FEATURE_OES_draw_texture
207   st_destroy_drawtex(st);
208#endif
209
210   for (i = 0; i < Elements(st->state.sampler_texture); i++) {
211      pipe_texture_reference(&st->state.sampler_texture[i], NULL);
212   }
213
214   for (i = 0; i < Elements(st->state.constants); i++) {
215      if (st->state.constants[i]) {
216         pipe_buffer_reference(&st->state.constants[i], NULL);
217      }
218   }
219
220   if (st->default_texture) {
221      st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
222      st->default_texture = NULL;
223   }
224
225   free( st );
226}
227
228
229void st_destroy_context( struct st_context *st )
230{
231   struct pipe_context *pipe = st->pipe;
232   struct cso_context *cso = st->cso_context;
233   GLcontext *ctx = st->ctx;
234   GLuint i;
235
236   /* need to unbind and destroy CSO objects before anything else */
237   cso_release_all(st->cso_context);
238
239   st_reference_fragprog(st, &st->fp, NULL);
240   st_reference_vertprog(st, &st->vp, NULL);
241
242   /* release framebuffer surfaces */
243   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
244      pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
245   }
246   pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
247
248   _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
249
250   _vbo_DestroyContext(st->ctx);
251
252   _mesa_free_context_data(ctx);
253
254   st_destroy_context_priv(st);
255
256   cso_destroy_context(cso);
257
258   pipe->destroy( pipe );
259
260   free(ctx);
261}
262
263
264GLboolean
265st_make_current(struct st_context *st,
266                struct st_framebuffer *draw,
267                struct st_framebuffer *read)
268{
269   /* Call this periodically to detect when the user has begun using
270    * GL rendering from multiple threads.
271    */
272   _glapi_check_multithread();
273
274   if (st) {
275      if (!_mesa_make_current(st->ctx, &draw->Base, &read->Base))
276         return GL_FALSE;
277
278      _mesa_check_init_viewport(st->ctx, draw->InitWidth, draw->InitHeight);
279
280      return GL_TRUE;
281   }
282   else {
283      return _mesa_make_current(NULL, NULL, NULL);
284   }
285}
286
287struct st_context *st_get_current(void)
288{
289   GET_CURRENT_CONTEXT(ctx);
290
291   return (ctx == NULL) ? NULL : ctx->st;
292}
293
294void st_copy_context_state(struct st_context *dst,
295                           struct st_context *src,
296                           uint mask)
297{
298   _mesa_copy_context(dst->ctx, src->ctx, mask);
299}
300
301
302
303st_proc st_get_proc_address(const char *procname)
304{
305   return (st_proc) _glapi_get_proc_address(procname);
306}
307
308
309
310void st_init_driver_functions(struct dd_function_table *functions)
311{
312   _mesa_init_glsl_driver_functions(functions);
313
314#if FEATURE_accum
315   st_init_accum_functions(functions);
316#endif
317#if FEATURE_EXT_framebuffer_blit
318   st_init_blit_functions(functions);
319#endif
320   st_init_bufferobject_functions(functions);
321   st_init_clear_functions(functions);
322#if FEATURE_drawpix
323   st_init_bitmap_functions(functions);
324   st_init_drawpixels_functions(functions);
325   st_init_rasterpos_functions(functions);
326#endif
327
328#if FEATURE_OES_draw_texture
329   st_init_drawtex_functions(functions);
330#endif
331
332   st_init_fbo_functions(functions);
333#if FEATURE_feedback
334   st_init_feedback_functions(functions);
335#endif
336   st_init_program_functions(functions);
337#if FEATURE_queryobj
338   st_init_query_functions(functions);
339#endif
340   st_init_cond_render_functions(functions);
341   st_init_readpixels_functions(functions);
342   st_init_texture_functions(functions);
343   st_init_flush_functions(functions);
344   st_init_string_functions(functions);
345
346   functions->UpdateState = st_invalidate_state;
347}
348