summaryrefslogtreecommitdiff
path: root/src/mesa/state_tracker/st_context.c
blob: e536029e86ea062b734c8467f595c58a45a656bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
/**************************************************************************
 * 
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#include "main/imports.h"
#include "main/context.h"
#include "main/extensions.h"
#include "main/matrix.h"
#include "main/buffers.h"
#include "main/scissor.h"
#include "main/viewport.h"
#include "vbo/vbo.h"
#include "shader/shader_api.h"
#include "glapi/glapi.h"
#include "st_public.h"
#include "st_context.h"
#include "st_cb_accum.h"
#include "st_cb_bitmap.h"
#include "st_cb_blit.h"
#include "st_cb_bufferobjects.h"
#include "st_cb_clear.h"
#if FEATURE_drawpix
#include "st_cb_drawpixels.h"
#include "st_cb_rasterpos.h"
#endif
#ifdef FEATURE_OES_draw_texture
#include "st_cb_drawtex.h"
#endif
#include "st_cb_fbo.h"
#include "st_cb_get.h"
#if FEATURE_feedback
#include "st_cb_feedback.h"
#endif
#include "st_cb_program.h"
#include "st_cb_queryobj.h"
#include "st_cb_readpixels.h"
#include "st_cb_texture.h"
#include "st_cb_flush.h"
#include "st_cb_strings.h"
#include "st_cb_viewport.h"
#include "st_atom.h"
#include "st_draw.h"
#include "st_extensions.h"
#include "st_gen_mipmap.h"
#include "st_program.h"
#include "pipe/p_context.h"
#include "draw/draw_context.h"
#include "cso_cache/cso_cache.h"
#include "cso_cache/cso_context.h"


/**
 * Called via ctx->Driver.UpdateState()
 */
void st_invalidate_state(GLcontext * ctx, GLuint new_state)
{
   struct st_context *st = st_context(ctx);

   st->dirty.mesa |= new_state;
   st->dirty.st |= ST_NEW_MESA;

   /* This is the only core Mesa module we depend upon.
    * No longer use swrast, swsetup, tnl.
    */
   _vbo_InvalidateState(ctx, new_state);
}


/**
 * Check for multisample env var override.
 */
int
st_get_msaa(void)
{
   const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
   if (msaa)
      return atoi(msaa);
   return 0;
}


static struct st_context *
st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
{
   uint i;
   struct st_context *st = ST_CALLOC_STRUCT( st_context );
   
   ctx->st = st;

   st->ctx = ctx;
   st->pipe = pipe;

   /* state tracker needs the VBO module */
   _vbo_CreateContext(ctx);

#if FEATURE_feedback || FEATURE_drawpix
   st->draw = draw_create(); /* for selection/feedback */

   /* Disable draw options that might convert points/lines to tris, etc.
    * as that would foul-up feedback/selection mode.
    */
   draw_wide_line_threshold(st->draw, 1000.0f);
   draw_wide_point_threshold(st->draw, 1000.0f);
   draw_enable_line_stipple(st->draw, FALSE);
   draw_enable_point_sprites(st->draw, FALSE);
#endif

   st->dirty.mesa = ~0;
   st->dirty.st = ~0;

   st->cso_context = cso_create_context(pipe);

   st_init_atoms( st );
   st_init_bitmap(st);
   st_init_clear(st);
   st_init_draw( st );
   st_init_generate_mipmap(st);
   st_init_blit(st);

   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
      st->state.sampler_list[i] = &st->state.samplers[i];

   /* we want all vertex data to be placed in buffer objects */
   vbo_use_buffer_objects(ctx);

   /* Need these flags:
    */
   st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;

   st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;

   st->pixel_xfer.cache = _mesa_new_program_cache();

   st->force_msaa = st_get_msaa();

   /* GL limits and extensions */
   st_init_limits(st);
   st_init_extensions(st);

   return st;
}


struct st_context *st_create_context(struct pipe_context *pipe,
                                     const __GLcontextModes *visual,
                                     struct st_context *share)
{
   GLcontext *ctx;
   GLcontext *shareCtx = share ? share->ctx : NULL;
   struct dd_function_table funcs;

   memset(&funcs, 0, sizeof(funcs));
   st_init_driver_functions(&funcs);

   ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);

   /* XXX: need a capability bit in gallium to query if the pipe
    * driver prefers DP4 or MUL/MAD for vertex transformation.
    */
   if (debug_get_bool_option("MESA_MVP_DP4", FALSE))
      _mesa_set_mvp_with_dp4( ctx, GL_TRUE );

   return st_create_context_priv(ctx, pipe);
}


static void st_destroy_context_priv( struct st_context *st )
{
   uint i;

#if FEATURE_feedback || FEATURE_drawpix
   draw_destroy(st->draw);
#endif
   st_destroy_atoms( st );
   st_destroy_draw( st );
   st_destroy_generate_mipmap(st);
#if FEATURE_EXT_framebuffer_blit
   st_destroy_blit(st);
#endif
   st_destroy_clear(st);
#if FEATURE_drawpix
   st_destroy_bitmap(st);
   st_destroy_drawpix(st);
#endif
#ifdef FEATURE_OES_draw_texture
   st_destroy_drawtex(st);
#endif

   for (i = 0; i < Elements(st->state.sampler_texture); i++) {
      pipe_texture_reference(&st->state.sampler_texture[i], NULL);
   }

   for (i = 0; i < Elements(st->state.constants); i++) {
      if (st->state.constants[i].buffer) {
         pipe_buffer_reference(&st->state.constants[i].buffer, NULL);
      }
   }

   if (st->default_texture) {
      st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
      st->default_texture = NULL;
   }

   _mesa_free( st );
}

 
void st_destroy_context( struct st_context *st )
{
   struct pipe_context *pipe = st->pipe;
   struct cso_context *cso = st->cso_context;
   GLcontext *ctx = st->ctx;
   GLuint i;

   /* need to unbind and destroy CSO objects before anything else */
   cso_release_all(st->cso_context);

   st_reference_fragprog(st, &st->fp, NULL);
   st_reference_vertprog(st, &st->vp, NULL);

   /* release framebuffer surfaces */
   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
      pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
   }
   pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);

   _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);

   _vbo_DestroyContext(st->ctx);

   _mesa_free_context_data(ctx);

   st_destroy_context_priv(st);

   cso_destroy_context(cso);

   pipe->destroy( pipe );

   _mesa_free(ctx);
}


void st_make_current(struct st_context *st,
                     struct st_framebuffer *draw,
                     struct st_framebuffer *read)
{
   /* Call this periodically to detect when the user has begun using
    * GL rendering from multiple threads.
    */
   _glapi_check_multithread();

   if (st) {
      GLboolean firstTime = st->ctx->FirstTimeCurrent;
      _mesa_make_current(st->ctx, &draw->Base, &read->Base);
      /* Need to initialize viewport here since draw->Base->Width/Height
       * will still be zero at this point.
       * This could be improved, but would require rather extensive work
       * elsewhere (allocate rb surface storage sooner)
       */
      if (firstTime) {
         GLuint w = draw->InitWidth, h = draw->InitHeight;
         _mesa_set_viewport(st->ctx, 0, 0, w, h);
         _mesa_set_scissor(st->ctx, 0, 0, w, h);

      }
   }
   else {
      _mesa_make_current(NULL, NULL, NULL);
   }
}

struct st_context *st_get_current(void)
{
   GET_CURRENT_CONTEXT(ctx);

   return (ctx == NULL) ? NULL : ctx->st;
}

void st_copy_context_state(struct st_context *dst,
                           struct st_context *src,
                           uint mask)
{
   _mesa_copy_context(dst->ctx, src->ctx, mask);
}



st_proc st_get_proc_address(const char *procname)
{
   return (st_proc) _glapi_get_proc_address(procname);
}



void st_init_driver_functions(struct dd_function_table *functions)
{
   _mesa_init_glsl_driver_functions(functions);

#if FEATURE_accum
   st_init_accum_functions(functions);
#endif
#if FEATURE_EXT_framebuffer_blit
   st_init_blit_functions(functions);
#endif
   st_init_bufferobject_functions(functions);
   st_init_clear_functions(functions);
#if FEATURE_drawpix
   st_init_bitmap_functions(functions);
   st_init_drawpixels_functions(functions);
   st_init_rasterpos_functions(functions);
#endif
   st_init_fbo_functions(functions);
   st_init_get_functions(functions);
#if FEATURE_feedback
   st_init_feedback_functions(functions);
#endif
   st_init_program_functions(functions);
#if FEATURE_ARB_occlusion_query
   st_init_query_functions(functions);
#endif
   st_init_readpixels_functions(functions);
   st_init_texture_functions(functions);
   st_init_flush_functions(functions);
   st_init_string_functions(functions);
   st_init_viewport_functions(functions);

   functions->UpdateState = st_invalidate_state;
}