st_context.c revision 5257a6dbc65d742e6d0fcf4278a4157b2f39fdf7 
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 "main/shaderobj.h"
31#include "program/prog_cache.h"
32#include "vbo/vbo.h"
33#include "glapi/glapi.h"
34#include "st_context.h"
35#include "st_debug.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#include "st_cb_drawpixels.h"
43#include "st_cb_rasterpos.h"
44#include "st_cb_drawtex.h"
45#include "st_cb_eglimage.h"
46#include "st_cb_fbo.h"
47#include "st_cb_feedback.h"
48#include "st_cb_program.h"
49#include "st_cb_queryobj.h"
50#include "st_cb_readpixels.h"
51#include "st_cb_texture.h"
52#include "st_cb_xformfb.h"
53#include "st_cb_flush.h"
54#include "st_cb_syncobj.h"
55#include "st_cb_strings.h"
56#include "st_cb_viewport.h"
57#include "st_atom.h"
58#include "st_draw.h"
59#include "st_extensions.h"
60#include "st_gen_mipmap.h"
61#include "st_program.h"
62#include "pipe/p_context.h"
63#include "util/u_inlines.h"
64#include "cso_cache/cso_context.h"
65
66
67DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
68
69
70/**
71 * Called via ctx->Driver.UpdateState()
72 */
73void st_invalidate_state(struct gl_context * 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( struct gl_context *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   st->dirty.mesa = ~0;
118   st->dirty.st = ~0;
119
120   st->cso_context = cso_create_context(pipe);
121
122   st_init_atoms( st );
123   st_init_bitmap(st);
124   st_init_clear(st);
125   st_init_draw( st );
126   st_init_generate_mipmap(st);
127   st_init_blit(st);
128
129   if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
130      st->internal_target = PIPE_TEXTURE_2D;
131   else
132      st->internal_target = PIPE_TEXTURE_RECT;
133
134   for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
135      st->state.sampler_list[i] = &st->state.samplers[i];
136
137   for (i = 0; i < 3; i++) {
138      memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
139      st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
140      st->velems_util_draw[i].instance_divisor = 0;
141      st->velems_util_draw[i].vertex_buffer_index = 0;
142      st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
143   }
144
145   /* we want all vertex data to be placed in buffer objects */
146   vbo_use_buffer_objects(ctx);
147
148   /* Need these flags:
149    */
150   st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
151
152   st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
153
154   st->pixel_xfer.cache = _mesa_new_program_cache();
155
156   st->force_msaa = st_get_msaa();
157
158   /* GL limits and extensions */
159   st_init_limits(st);
160   st_init_extensions(st);
161
162   return st;
163}
164
165
166struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
167                                     const struct gl_config *visual,
168                                     struct st_context *share)
169{
170   struct gl_context *ctx;
171   struct gl_context *shareCtx = share ? share->ctx : NULL;
172   struct dd_function_table funcs;
173
174   /* Sanity checks */
175   assert(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
176   assert(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
177   assert(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
178
179   memset(&funcs, 0, sizeof(funcs));
180   st_init_driver_functions(&funcs);
181
182   ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
183
184   /* XXX: need a capability bit in gallium to query if the pipe
185    * driver prefers DP4 or MUL/MAD for vertex transformation.
186    */
187   if (debug_get_option_mesa_mvp_dp4())
188      _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
189
190   return st_create_context_priv(ctx, pipe);
191}
192
193
194static void st_destroy_context_priv( struct st_context *st )
195{
196   uint i;
197
198   st_destroy_atoms( st );
199   st_destroy_draw( st );
200   st_destroy_generate_mipmap(st);
201   st_destroy_blit(st);
202   st_destroy_clear(st);
203   st_destroy_bitmap(st);
204   st_destroy_drawpix(st);
205   st_destroy_drawtex(st);
206
207   /* Unreference any user vertex buffers. */
208   for (i = 0; i < st->num_user_vbs; i++) {
209      pipe_resource_reference(&st->user_vb[i], NULL);
210   }
211
212   for (i = 0; i < Elements(st->state.sampler_views); i++) {
213      pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
214   }
215
216   if (st->default_texture) {
217      st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
218      st->default_texture = NULL;
219   }
220
221   free( st );
222}
223
224
225void st_destroy_context( struct st_context *st )
226{
227   struct pipe_context *pipe = st->pipe;
228   struct cso_context *cso = st->cso_context;
229   struct gl_context *ctx = st->ctx;
230   GLuint i;
231
232   /* need to unbind and destroy CSO objects before anything else */
233   cso_release_all(st->cso_context);
234
235   st_reference_fragprog(st, &st->fp, NULL);
236   st_reference_vertprog(st, &st->vp, NULL);
237
238   /* release framebuffer surfaces */
239   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
240      pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
241   }
242   pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
243
244   pipe->set_index_buffer(pipe, NULL);
245
246   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
247      pipe->set_constant_buffer(pipe, i, 0, NULL);
248   }
249
250   _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
251
252   _vbo_DestroyContext(st->ctx);
253
254   st_destroy_program_variants(st);
255
256   _mesa_free_context_data(ctx);
257
258   st_destroy_context_priv(st);
259
260   cso_destroy_context(cso);
261
262   pipe->destroy( pipe );
263
264   free(ctx);
265}
266
267
268void st_init_driver_functions(struct dd_function_table *functions)
269{
270   _mesa_init_shader_object_functions(functions);
271
272   st_init_accum_functions(functions);
273   st_init_blit_functions(functions);
274   st_init_bufferobject_functions(functions);
275   st_init_clear_functions(functions);
276   st_init_bitmap_functions(functions);
277   st_init_drawpixels_functions(functions);
278   st_init_rasterpos_functions(functions);
279
280   st_init_drawtex_functions(functions);
281
282   st_init_eglimage_functions(functions);
283
284   st_init_fbo_functions(functions);
285   st_init_feedback_functions(functions);
286   st_init_program_functions(functions);
287   st_init_query_functions(functions);
288   st_init_cond_render_functions(functions);
289   st_init_readpixels_functions(functions);
290   st_init_texture_functions(functions);
291   st_init_flush_functions(functions);
292   st_init_string_functions(functions);
293   st_init_viewport_functions(functions);
294
295   st_init_xformfb_functions(functions);
296   st_init_syncobj_functions(functions);
297
298   functions->UpdateState = st_invalidate_state;
299}
300