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 static struct st_context *
  92 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
  93 {
  94    uint i;
  95    struct st_context *st = CALLOC_STRUCT( st_context );
  96
  97    ctx->st = st;
  98
  99    st->ctx = ctx;
 100    st->pipe = pipe;
 101
 102    /* state tracker needs the VBO module */
 103    _vbo_CreateContext(ctx);
 104
 105 #if FEATURE_feedback || FEATURE_drawpix
 106    st->draw = draw_create(); /* for selection/feedback */
 107
 108    /* Disable draw options that might convert points/lines to tris, etc.
 109     * as that would foul-up feedback/selection mode.
 110     */
 111    draw_wide_line_threshold(st->draw, 1000.0f);
 112    draw_wide_point_threshold(st->draw, 1000.0f);
 113    draw_enable_line_stipple(st->draw, FALSE);
 114    draw_enable_point_sprites(st->draw, FALSE);
 115 #endif
 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    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 130       st->state.sampler_list[i] = &st->state.samplers[i];
 131
 132    /* we want all vertex data to be placed in buffer objects */
 133    vbo_use_buffer_objects(ctx);
 134
 135    /* Need these flags:
 136     */
 137    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 138    st->ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
 139
 140    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 141
 142    st->pixel_xfer.cache = _mesa_new_program_cache();
 143
 144    /* GL limits and extensions */
 145    st_init_limits(st);
 146    st_init_extensions(st);
 147
 148    return st;
 149 }
 150
 151
 152 struct st_context *st_create_context(struct pipe_context *pipe,
 153                                      const __GLcontextModes *visual,
 154                                      struct st_context *share)
 155 {
 156    GLcontext *ctx;
 157    GLcontext *shareCtx = share ? share->ctx : NULL;
 158    struct dd_function_table funcs;
 159
 160    memset(&funcs, 0, sizeof(funcs));
 161    st_init_driver_functions(&funcs);
 162
 163    ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);
 164
 165    return st_create_context_priv(ctx, pipe);
 166 }
 167
 168
 169 static void st_destroy_context_priv( struct st_context *st )
 170 {
 171    uint i;
 172
 173 #if FEATURE_feedback || FEATURE_drawpix
 174    draw_destroy(st->draw);
 175 #endif
 176    st_destroy_atoms( st );
 177    st_destroy_draw( st );
 178    st_destroy_generate_mipmap(st);
 179 #if FEATURE_EXT_framebuffer_blit
 180    st_destroy_blit(st);
 181 #endif
 182    st_destroy_clear(st);
 183 #if FEATURE_drawpix
 184    st_destroy_bitmap(st);
 185    st_destroy_drawpix(st);
 186 #endif
 187 #ifdef FEATURE_OES_draw_texture
 188    st_destroy_drawtex(st);
 189 #endif
 190
 191    _vbo_DestroyContext(st->ctx);
 192
 193    for (i = 0; i < Elements(st->state.sampler_texture); i++) {
 194       pipe_texture_reference(&st->state.sampler_texture[i], NULL);
 195    }
 196
 197    for (i = 0; i < Elements(st->state.constants); i++) {
 198       if (st->state.constants[i].buffer) {
 199          pipe_buffer_reference(st->pipe->screen, &st->state.constants[i].buffer, NULL);
 200       }
 201    }
 202
 203    if (st->default_texture) {
 204       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 205       st->default_texture = NULL;
 206    }
 207
 208    free( st );
 209 }
 210
 211
 212 void st_destroy_context( struct st_context *st )
 213 {
 214    struct pipe_context *pipe = st->pipe;
 215    struct cso_context *cso = st->cso_context;
 216    GLcontext *ctx = st->ctx;
 217
 218    /* need to unbind and destroy CSO objects before anything else */
 219    cso_release_all(st->cso_context);
 220
 221    st_reference_fragprog(st, &st->fp, NULL);
 222    st_reference_vertprog(st, &st->vp, NULL);
 223
 224    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 225
 226    _mesa_free_context_data(ctx);
 227
 228    st_destroy_context_priv(st);
 229
 230    cso_destroy_context(cso);
 231
 232    pipe->destroy( pipe );
 233
 234    free(ctx);
 235 }
 236
 237
 238 void st_make_current(struct st_context *st,
 239                      struct st_framebuffer *draw,
 240                      struct st_framebuffer *read)
 241 {
 242    if (st) {
 243       GLboolean firstTime = st->ctx->FirstTimeCurrent;
 244       _mesa_make_current(st->ctx, &draw->Base, &read->Base);
 245       /* Need to initialize viewport here since draw->Base->Width/Height
 246        * will still be zero at this point.
 247        * This could be improved, but would require rather extensive work
 248        * elsewhere (allocate rb surface storage sooner)
 249        */
 250       if (firstTime) {
 251          GLuint w = draw->InitWidth, h = draw->InitHeight;
 252          _mesa_set_viewport(st->ctx, 0, 0, w, h);
 253          _mesa_set_scissor(st->ctx, 0, 0, w, h);
 254
 255       }
 256    }
 257    else {
 258       _mesa_make_current(NULL, NULL, NULL);
 259    }
 260 }
 261
 262
 263 void st_copy_context_state(struct st_context *dst,
 264                            struct st_context *src,
 265                            uint mask)
 266 {
 267    _mesa_copy_context(dst->ctx, src->ctx, mask);
 268 }
 269
 270
 271
 272 st_proc st_get_proc_address(const char *procname)
 273 {
 274    return (st_proc) _glapi_get_proc_address(procname);
 275 }
 276
 277
 278
 279 void st_init_driver_functions(struct dd_function_table *functions)
 280 {
 281    _mesa_init_glsl_driver_functions(functions);
 282
 283 #if FEATURE_accum
 284    st_init_accum_functions(functions);
 285 #endif
 286 #if FEATURE_EXT_framebuffer_blit
 287    st_init_blit_functions(functions);
 288 #endif
 289    st_init_bufferobject_functions(functions);
 290    st_init_clear_functions(functions);
 291 #if FEATURE_drawpix
 292    st_init_bitmap_functions(functions);
 293    st_init_drawpixels_functions(functions);
 294    st_init_rasterpos_functions(functions);
 295 #endif
 296    st_init_fbo_functions(functions);
 297    st_init_get_functions(functions);
 298 #if FEATURE_feedback
 299    st_init_feedback_functions(functions);
 300 #endif
 301    st_init_program_functions(functions);
 302 #if FEATURE_ARB_occlusion_query
 303    st_init_query_functions(functions);
 304 #endif
 305    st_init_readpixels_functions(functions);
 306    st_init_texture_functions(functions);
 307    st_init_flush_functions(functions);
 308    st_init_string_functions(functions);
 309
 310    functions->UpdateState = st_invalidate_state;
 311 }