src/mesa/state_tracker/st_context.c

   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/extensions.h"
  31 #include "main/matrix.h"
  32 #include "main/buffers.h"
  33 #include "main/scissor.h"
  34 #include "vbo/vbo.h"
  35 #include "shader/shader_api.h"
  36 #include "glapi/glapi.h"
  37 #include "st_public.h"
  38 #include "st_context.h"
  39 #include "st_cb_accum.h"
  40 #include "st_cb_bitmap.h"
  41 #include "st_cb_blit.h"
  42 #include "st_cb_bufferobjects.h"
  43 #include "st_cb_clear.h"
  44 #if FEATURE_drawpix
  45 #include "st_cb_drawpixels.h"
  46 #include "st_cb_rasterpos.h"
  47 #endif
  48 #ifdef FEATURE_OES_draw_texture
  49 #include "st_cb_drawtex.h"
  50 #endif
  51 #include "st_cb_fbo.h"
  52 #include "st_cb_get.h"
  53 #if FEATURE_feedback
  54 #include "st_cb_feedback.h"
  55 #endif
  56 #include "st_cb_program.h"
  57 #include "st_cb_queryobj.h"
  58 #include "st_cb_readpixels.h"
  59 #include "st_cb_texture.h"
  60 #include "st_cb_flush.h"
  61 #include "st_cb_strings.h"
  62 #include "st_atom.h"
  63 #include "st_draw.h"
  64 #include "st_extensions.h"
  65 #include "st_gen_mipmap.h"
  66 #include "st_program.h"
  67 #include "pipe/p_context.h"
  68 #include "pipe/p_inlines.h"
  69 #include "draw/draw_context.h"
  70 #include "cso_cache/cso_cache.h"
  71 #include "cso_cache/cso_context.h"
  72
  73
  74 /**
  75  * Called via ctx->Driver.UpdateState()
  76  */
  77 void st_invalidate_state(GLcontext * ctx, GLuint new_state)
  78 {
  79    struct st_context *st = st_context(ctx);
  80
  81    st->dirty.mesa |= new_state;
  82    st->dirty.st |= ST_NEW_MESA;
  83
  84    /* This is the only core Mesa module we depend upon.
  85     * No longer use swrast, swsetup, tnl.
  86     */
  87    _vbo_InvalidateState(ctx, new_state);
  88 }
  89
  90
  91 /**
  92  * Check for multisample env var override.
  93  */
  94 int
  95 st_get_msaa(void)
  96 {
  97    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
  98    if (msaa)
  99       return atoi(msaa);
 100    return 0;
 101 }
 102
 103
 104 static struct st_context *
 105 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
 106 {
 107    uint i;
 108    struct st_context *st = CALLOC_STRUCT( st_context );
 109
 110    ctx->st = st;
 111
 112    st->ctx = ctx;
 113    st->pipe = pipe;
 114
 115    /* state tracker needs the VBO module */
 116    _vbo_CreateContext(ctx);
 117
 118 #if FEATURE_feedback || FEATURE_drawpix
 119    st->draw = draw_create(); /* for selection/feedback */
 120
 121    /* Disable draw options that might convert points/lines to tris, etc.
 122     * as that would foul-up feedback/selection mode.
 123     */
 124    draw_wide_line_threshold(st->draw, 1000.0f);
 125    draw_wide_point_threshold(st->draw, 1000.0f);
 126    draw_enable_line_stipple(st->draw, FALSE);
 127    draw_enable_point_sprites(st->draw, FALSE);
 128 #endif
 129
 130    st->dirty.mesa = ~0;
 131    st->dirty.st = ~0;
 132
 133    st->cso_context = cso_create_context(pipe);
 134
 135    st_init_atoms( st );
 136    st_init_bitmap(st);
 137    st_init_clear(st);
 138    st_init_draw( st );
 139    st_init_generate_mipmap(st);
 140    st_init_blit(st);
 141
 142    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 143       st->state.sampler_list[i] = &st->state.samplers[i];
 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
 166 struct st_context *st_create_context(struct pipe_context *pipe,
 167                                      const __GLcontextModes *visual,
 168                                      struct st_context *share)
 169 {
 170    GLcontext *ctx;
 171    GLcontext *shareCtx = share ? share->ctx : NULL;
 172    struct dd_function_table funcs;
 173
 174    memset(&funcs, 0, sizeof(funcs));
 175    st_init_driver_functions(&funcs);
 176
 177    ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);
 178
 179    return st_create_context_priv(ctx, pipe);
 180 }
 181
 182
 183 static void st_destroy_context_priv( struct st_context *st )
 184 {
 185    uint i;
 186
 187 #if FEATURE_feedback || FEATURE_drawpix
 188    draw_destroy(st->draw);
 189 #endif
 190    st_destroy_atoms( st );
 191    st_destroy_draw( st );
 192    st_destroy_generate_mipmap(st);
 193 #if FEATURE_EXT_framebuffer_blit
 194    st_destroy_blit(st);
 195 #endif
 196    st_destroy_clear(st);
 197 #if FEATURE_drawpix
 198    st_destroy_bitmap(st);
 199    st_destroy_drawpix(st);
 200 #endif
 201 #ifdef FEATURE_OES_draw_texture
 202    st_destroy_drawtex(st);
 203 #endif
 204
 205    for (i = 0; i < Elements(st->state.sampler_texture); i++) {
 206       pipe_texture_reference(&st->state.sampler_texture[i], NULL);
 207    }
 208
 209    for (i = 0; i < Elements(st->state.constants); i++) {
 210       if (st->state.constants[i].buffer) {
 211          pipe_buffer_reference(st->pipe->screen, &st->state.constants[i].buffer, NULL);
 212       }
 213    }
 214
 215    if (st->default_texture) {
 216       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 217       st->default_texture = NULL;
 218    }
 219
 220    free( st );
 221 }
 222
 223
 224 void st_destroy_context( struct st_context *st )
 225 {
 226    struct pipe_context *pipe = st->pipe;
 227    struct cso_context *cso = st->cso_context;
 228    GLcontext *ctx = st->ctx;
 229
 230    /* need to unbind and destroy CSO objects before anything else */
 231    cso_release_all(st->cso_context);
 232
 233    st_reference_fragprog(st, &st->fp, NULL);
 234    st_reference_vertprog(st, &st->vp, NULL);
 235
 236    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 237
 238    _vbo_DestroyContext(st->ctx);
 239
 240    _mesa_free_context_data(ctx);
 241
 242    st_destroy_context_priv(st);
 243
 244    cso_destroy_context(cso);
 245
 246    pipe->destroy( pipe );
 247
 248    free(ctx);
 249 }
 250
 251
 252 void st_make_current(struct st_context *st,
 253                      struct st_framebuffer *draw,
 254                      struct st_framebuffer *read)
 255 {
 256    if (st) {
 257       GLboolean firstTime = st->ctx->FirstTimeCurrent;
 258       _mesa_make_current(st->ctx, &draw->Base, &read->Base);
 259       /* Need to initialize viewport here since draw->Base->Width/Height
 260        * will still be zero at this point.
 261        * This could be improved, but would require rather extensive work
 262        * elsewhere (allocate rb surface storage sooner)
 263        */
 264       if (firstTime) {
 265          GLuint w = draw->InitWidth, h = draw->InitHeight;
 266          _mesa_set_viewport(st->ctx, 0, 0, w, h);
 267          _mesa_set_scissor(st->ctx, 0, 0, w, h);
 268
 269       }
 270    }
 271    else {
 272       _mesa_make_current(NULL, NULL, NULL);
 273    }
 274 }
 275
 276
 277 void st_copy_context_state(struct st_context *dst,
 278                            struct st_context *src,
 279                            uint mask)
 280 {
 281    _mesa_copy_context(dst->ctx, src->ctx, mask);
 282 }
 283
 284
 285
 286 st_proc st_get_proc_address(const char *procname)
 287 {
 288    return (st_proc) _glapi_get_proc_address(procname);
 289 }
 290
 291
 292
 293 void st_init_driver_functions(struct dd_function_table *functions)
 294 {
 295    _mesa_init_glsl_driver_functions(functions);
 296
 297 #if FEATURE_accum
 298    st_init_accum_functions(functions);
 299 #endif
 300 #if FEATURE_EXT_framebuffer_blit
 301    st_init_blit_functions(functions);
 302 #endif
 303    st_init_bufferobject_functions(functions);
 304    st_init_clear_functions(functions);
 305 #if FEATURE_drawpix
 306    st_init_bitmap_functions(functions);
 307    st_init_drawpixels_functions(functions);
 308    st_init_rasterpos_functions(functions);
 309 #endif
 310    st_init_fbo_functions(functions);
 311    st_init_get_functions(functions);
 312 #if FEATURE_feedback
 313    st_init_feedback_functions(functions);
 314 #endif
 315    st_init_program_functions(functions);
 316 #if FEATURE_ARB_occlusion_query
 317    st_init_query_functions(functions);
 318 #endif
 319    st_init_readpixels_functions(functions);
 320    st_init_texture_functions(functions);
 321    st_init_flush_functions(functions);
 322    st_init_string_functions(functions);
 323
 324    functions->UpdateState = st_invalidate_state;
 325 }