st_context.c revision 5749ae919e386e49dbf373e362dd74b513c96360 
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/accum.h"
30#include "main/context.h"
31#include "main/samplerobj.h"
32#include "main/shaderobj.h"
33#include "program/prog_cache.h"
34#include "vbo/vbo.h"
35#include "glapi/glapi.h"
36#include "st_context.h"
37#include "st_debug.h"
38#include "st_cb_bitmap.h"
39#include "st_cb_blit.h"
40#include "st_cb_bufferobjects.h"
41#include "st_cb_clear.h"
42#include "st_cb_condrender.h"
43#include "st_cb_drawpixels.h"
44#include "st_cb_rasterpos.h"
45#include "st_cb_drawtex.h"
46#include "st_cb_eglimage.h"
47#include "st_cb_fbo.h"
48#include "st_cb_feedback.h"
49#include "st_cb_program.h"
50#include "st_cb_queryobj.h"
51#include "st_cb_readpixels.h"
52#include "st_cb_texture.h"
53#include "st_cb_xformfb.h"
54#include "st_cb_flush.h"
55#include "st_cb_syncobj.h"
56#include "st_cb_strings.h"
57#include "st_cb_texturebarrier.h"
58#include "st_cb_viewport.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 "util/u_upload_mgr.h"
67#include "cso_cache/cso_context.h"
68
69
70DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
71
72
73/**
74 * Called via ctx->Driver.UpdateState()
75 */
76void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
77{
78   struct st_context *st = st_context(ctx);
79
80   /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
81   if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
82      new_state &= ~_NEW_FRAG_CLAMP;
83      st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
84   }
85
86   /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
87   if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
88      st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
89   }
90
91   st->dirty.mesa |= new_state;
92   st->dirty.st |= ST_NEW_MESA;
93
94   /* This is the only core Mesa module we depend upon.
95    * No longer use swrast, swsetup, tnl.
96    */
97   _vbo_InvalidateState(ctx, new_state);
98}
99
100
101/**
102 * Check for multisample env var override.
103 */
104int
105st_get_msaa(void)
106{
107   const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
108   if (msaa)
109      return atoi(msaa);
110   return 0;
111}
112
113
114
115
116static struct st_context *
117st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe )
118{
119   struct pipe_screen *screen = pipe->screen;
120   uint i;
121   struct st_context *st = ST_CALLOC_STRUCT( st_context );
122
123   ctx->st = st;
124
125   st->ctx = ctx;
126   st->pipe = pipe;
127
128   /* XXX: this is one-off, per-screen init: */
129   st_debug_init();
130
131   /* state tracker needs the VBO module */
132   _vbo_CreateContext(ctx);
133
134   st->dirty.mesa = ~0;
135   st->dirty.st = ~0;
136
137   st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
138
139   if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
140      st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
141                                              PIPE_BIND_INDEX_BUFFER);
142   }
143
144   if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
145      unsigned alignment =
146         screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
147
148      st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
149                                              PIPE_BIND_CONSTANT_BUFFER);
150   }
151
152   st->cso_context = cso_create_context(pipe);
153
154   st_init_atoms( st );
155   st_init_bitmap(st);
156   st_init_clear(st);
157   st_init_draw( st );
158   st_init_generate_mipmap(st);
159   st_init_blit(st);
160
161   if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
162      st->internal_target = PIPE_TEXTURE_2D;
163   else
164      st->internal_target = PIPE_TEXTURE_RECT;
165
166   for (i = 0; i < 3; i++) {
167      memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
168      st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
169      st->velems_util_draw[i].instance_divisor = 0;
170      st->velems_util_draw[i].vertex_buffer_index = 0;
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->force_msaa = st_get_msaa();
190   st->has_stencil_export =
191      screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
192
193   /* GL limits and extensions */
194   st_init_limits(st);
195   st_init_extensions(st);
196
197   return st;
198}
199
200static void st_init_driver_flags(struct gl_driver_flags *f)
201{
202   f->NewArray = ST_NEW_VERTEX_ARRAYS;
203}
204
205struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
206                                     const struct gl_config *visual,
207                                     struct st_context *share)
208{
209   struct gl_context *ctx;
210   struct gl_context *shareCtx = share ? share->ctx : NULL;
211   struct dd_function_table funcs;
212
213   /* Sanity checks */
214   STATIC_ASSERT(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
215   STATIC_ASSERT(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
216   STATIC_ASSERT(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
217
218   memset(&funcs, 0, sizeof(funcs));
219   st_init_driver_functions(&funcs);
220
221   ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
222   if (!ctx) {
223      return NULL;
224   }
225
226   st_init_driver_flags(&ctx->DriverFlags);
227
228   /* XXX: need a capability bit in gallium to query if the pipe
229    * driver prefers DP4 or MUL/MAD for vertex transformation.
230    */
231   if (debug_get_option_mesa_mvp_dp4())
232      _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
233
234   return st_create_context_priv(ctx, pipe);
235}
236
237
238static void st_destroy_context_priv( struct st_context *st )
239{
240   uint i;
241
242   st_destroy_atoms( st );
243   st_destroy_draw( st );
244   st_destroy_generate_mipmap(st);
245   st_destroy_blit(st);
246   st_destroy_clear(st);
247   st_destroy_bitmap(st);
248   st_destroy_drawpix(st);
249   st_destroy_drawtex(st);
250
251   for (i = 0; i < Elements(st->state.fragment_sampler_views); i++) {
252      pipe_sampler_view_release(st->pipe,
253                                &st->state.fragment_sampler_views[i]);
254   }
255
256   for (i = 0; i < Elements(st->state.vertex_sampler_views); i++) {
257      pipe_sampler_view_release(st->pipe,
258                                &st->state.vertex_sampler_views[i]);
259   }
260
261   if (st->default_texture) {
262      st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
263      st->default_texture = NULL;
264   }
265
266   u_upload_destroy(st->uploader);
267   if (st->indexbuf_uploader) {
268      u_upload_destroy(st->indexbuf_uploader);
269   }
270   if (st->constbuf_uploader) {
271      u_upload_destroy(st->constbuf_uploader);
272   }
273   free( st );
274}
275
276
277void st_destroy_context( struct st_context *st )
278{
279   struct pipe_context *pipe = st->pipe;
280   struct cso_context *cso = st->cso_context;
281   struct gl_context *ctx = st->ctx;
282   GLuint i;
283
284   /* need to unbind and destroy CSO objects before anything else */
285   cso_release_all(st->cso_context);
286
287   st_reference_fragprog(st, &st->fp, NULL);
288   st_reference_vertprog(st, &st->vp, NULL);
289
290   /* release framebuffer surfaces */
291   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
292      pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
293   }
294   pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
295
296   pipe->set_index_buffer(pipe, NULL);
297
298   for (i = 0; i < PIPE_SHADER_TYPES; i++) {
299      pipe->set_constant_buffer(pipe, i, 0, NULL);
300   }
301
302   _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
303
304   _vbo_DestroyContext(st->ctx);
305
306   st_destroy_program_variants(st);
307
308   _mesa_free_context_data(ctx);
309
310   /* This will free the st_context too, so 'st' must not be accessed
311    * afterwards. */
312   st_destroy_context_priv(st);
313   st = NULL;
314
315   cso_destroy_context(cso);
316
317   pipe->destroy( pipe );
318
319   free(ctx);
320}
321
322
323void st_init_driver_functions(struct dd_function_table *functions)
324{
325   _mesa_init_shader_object_functions(functions);
326   _mesa_init_sampler_object_functions(functions);
327
328   functions->Accum = _mesa_accum;
329
330   st_init_blit_functions(functions);
331   st_init_bufferobject_functions(functions);
332   st_init_clear_functions(functions);
333   st_init_bitmap_functions(functions);
334   st_init_drawpixels_functions(functions);
335   st_init_rasterpos_functions(functions);
336
337   st_init_drawtex_functions(functions);
338
339   st_init_eglimage_functions(functions);
340
341   st_init_fbo_functions(functions);
342   st_init_feedback_functions(functions);
343   st_init_program_functions(functions);
344   st_init_query_functions(functions);
345   st_init_cond_render_functions(functions);
346   st_init_readpixels_functions(functions);
347   st_init_texture_functions(functions);
348   st_init_texture_barrier_functions(functions);
349   st_init_flush_functions(functions);
350   st_init_string_functions(functions);
351   st_init_viewport_functions(functions);
352
353   st_init_xformfb_functions(functions);
354   st_init_syncobj_functions(functions);
355
356   functions->UpdateState = st_invalidate_state;
357}
358