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
70 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
71
72
73 /**
74 * Called via ctx->Driver.UpdateState()
75 */
st_invalidate_state(struct gl_context * ctx,GLuint new_state)76 void 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 */
104 int
st_get_msaa(void)105 st_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
116 static struct st_context *
st_create_context_priv(struct gl_context * ctx,struct pipe_context * pipe,const struct st_config_options * options)117 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
118 const struct st_config_options *options)
119 {
120 struct pipe_screen *screen = pipe->screen;
121 uint i;
122 struct st_context *st = ST_CALLOC_STRUCT( st_context );
123
124 st->options = *options;
125
126 ctx->st = st;
127
128 st->ctx = ctx;
129 st->pipe = pipe;
130
131 /* XXX: this is one-off, per-screen init: */
132 st_debug_init();
133
134 /* state tracker needs the VBO module */
135 _vbo_CreateContext(ctx);
136
137 st->dirty.mesa = ~0;
138 st->dirty.st = ~0;
139
140 st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
141
142 if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
143 st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
144 PIPE_BIND_INDEX_BUFFER);
145 }
146
147 if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
148 unsigned alignment =
149 screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
150
151 st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
152 PIPE_BIND_CONSTANT_BUFFER);
153 }
154
155 st->cso_context = cso_create_context(pipe);
156
157 st_init_atoms( st );
158 st_init_bitmap(st);
159 st_init_clear(st);
160 st_init_draw( st );
161 st_init_generate_mipmap(st);
162 st_init_blit(st);
163
164 if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
165 st->internal_target = PIPE_TEXTURE_2D;
166 else
167 st->internal_target = PIPE_TEXTURE_RECT;
168
169 /* Vertex element objects used for drawing rectangles for glBitmap,
170 * glDrawPixels, glClear, etc.
171 */
172 for (i = 0; i < Elements(st->velems_util_draw); i++) {
173 memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
174 st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
175 st->velems_util_draw[i].instance_divisor = 0;
176 st->velems_util_draw[i].vertex_buffer_index = 0;
177 st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
178 }
179
180 /* we want all vertex data to be placed in buffer objects */
181 vbo_use_buffer_objects(ctx);
182
183
184 /* make sure that no VBOs are left mapped when we're drawing. */
185 vbo_always_unmap_buffers(ctx);
186
187 /* Need these flags:
188 */
189 st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
190
191 st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
192
193 st->pixel_xfer.cache = _mesa_new_program_cache();
194
195 st->force_msaa = st_get_msaa();
196 st->has_stencil_export =
197 screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
198
199 /* GL limits and extensions */
200 st_init_limits(st);
201 st_init_extensions(st);
202
203 return st;
204 }
205
st_init_driver_flags(struct gl_driver_flags * f)206 static void st_init_driver_flags(struct gl_driver_flags *f)
207 {
208 f->NewArray = ST_NEW_VERTEX_ARRAYS;
209 }
210
st_create_context(gl_api api,struct pipe_context * pipe,const struct gl_config * visual,struct st_context * share,const struct st_config_options * options)211 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
212 const struct gl_config *visual,
213 struct st_context *share,
214 const struct st_config_options *options)
215 {
216 struct gl_context *ctx;
217 struct gl_context *shareCtx = share ? share->ctx : NULL;
218 struct dd_function_table funcs;
219
220 /* Sanity checks */
221 STATIC_ASSERT(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
222 STATIC_ASSERT(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
223 STATIC_ASSERT(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
224
225 memset(&funcs, 0, sizeof(funcs));
226 st_init_driver_functions(&funcs);
227
228 ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
229 if (!ctx) {
230 return NULL;
231 }
232
233 st_init_driver_flags(&ctx->DriverFlags);
234
235 /* XXX: need a capability bit in gallium to query if the pipe
236 * driver prefers DP4 or MUL/MAD for vertex transformation.
237 */
238 if (debug_get_option_mesa_mvp_dp4())
239 _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
240
241 return st_create_context_priv(ctx, pipe, options);
242 }
243
244
st_destroy_context_priv(struct st_context * st)245 static void st_destroy_context_priv( struct st_context *st )
246 {
247 uint shader, i;
248
249 st_destroy_atoms( st );
250 st_destroy_draw( st );
251 st_destroy_generate_mipmap(st);
252 st_destroy_blit(st);
253 st_destroy_clear(st);
254 st_destroy_bitmap(st);
255 st_destroy_drawpix(st);
256 st_destroy_drawtex(st);
257
258 for (shader = 0; shader < Elements(st->state.sampler_views); shader++) {
259 for (i = 0; i < Elements(st->state.sampler_views[0]); i++) {
260 pipe_sampler_view_release(st->pipe,
261 &st->state.sampler_views[shader][i]);
262 }
263 }
264
265 if (st->default_texture) {
266 st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
267 st->default_texture = NULL;
268 }
269
270 u_upload_destroy(st->uploader);
271 if (st->indexbuf_uploader) {
272 u_upload_destroy(st->indexbuf_uploader);
273 }
274 if (st->constbuf_uploader) {
275 u_upload_destroy(st->constbuf_uploader);
276 }
277 free( st );
278 }
279
280
st_destroy_context(struct st_context * st)281 void st_destroy_context( struct st_context *st )
282 {
283 struct pipe_context *pipe = st->pipe;
284 struct cso_context *cso = st->cso_context;
285 struct gl_context *ctx = st->ctx;
286 GLuint i;
287
288 /* need to unbind and destroy CSO objects before anything else */
289 cso_release_all(st->cso_context);
290
291 st_reference_fragprog(st, &st->fp, NULL);
292 st_reference_vertprog(st, &st->vp, NULL);
293
294 /* release framebuffer surfaces */
295 for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
296 pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
297 }
298 pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
299
300 pipe->set_index_buffer(pipe, NULL);
301
302 for (i = 0; i < PIPE_SHADER_TYPES; i++) {
303 pipe->set_constant_buffer(pipe, i, 0, NULL);
304 }
305
306 _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
307
308 _vbo_DestroyContext(st->ctx);
309
310 st_destroy_program_variants(st);
311
312 _mesa_free_context_data(ctx);
313
314 /* This will free the st_context too, so 'st' must not be accessed
315 * afterwards. */
316 st_destroy_context_priv(st);
317 st = NULL;
318
319 cso_destroy_context(cso);
320
321 pipe->destroy( pipe );
322
323 free(ctx);
324 }
325
326
st_init_driver_functions(struct dd_function_table * functions)327 void st_init_driver_functions(struct dd_function_table *functions)
328 {
329 _mesa_init_shader_object_functions(functions);
330 _mesa_init_sampler_object_functions(functions);
331
332 functions->Accum = _mesa_accum;
333
334 st_init_blit_functions(functions);
335 st_init_bufferobject_functions(functions);
336 st_init_clear_functions(functions);
337 st_init_bitmap_functions(functions);
338 st_init_drawpixels_functions(functions);
339 st_init_rasterpos_functions(functions);
340
341 st_init_drawtex_functions(functions);
342
343 st_init_eglimage_functions(functions);
344
345 st_init_fbo_functions(functions);
346 st_init_feedback_functions(functions);
347 st_init_program_functions(functions);
348 st_init_query_functions(functions);
349 st_init_cond_render_functions(functions);
350 st_init_readpixels_functions(functions);
351 st_init_texture_functions(functions);
352 st_init_texture_barrier_functions(functions);
353 st_init_flush_functions(functions);
354 st_init_string_functions(functions);
355 st_init_viewport_functions(functions);
356
357 st_init_xformfb_functions(functions);
358 st_init_syncobj_functions(functions);
359
360 functions->UpdateState = st_invalidate_state;
361 }
362