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 #if FEATURE_feedback
  53 #include "st_cb_feedback.h"
  54 #endif
  55 #include "st_cb_program.h"
  56 #include "st_cb_queryobj.h"
  57 #include "st_cb_readpixels.h"
  58 #include "st_cb_texture.h"
  59 #include "st_cb_flush.h"
  60 #include "st_cb_strings.h"
  61 #include "st_atom.h"
  62 #include "st_draw.h"
  63 #include "st_extensions.h"
  64 #include "st_gen_mipmap.h"
  65 #include "st_program.h"
  66 #include "pipe/p_context.h"
  67 #include "pipe/p_inlines.h"
  68 #include "draw/draw_context.h"
  69 #include "cso_cache/cso_cache.h"
  70 #include "cso_cache/cso_context.h"
  71
  72
  73 /**
  74  * Called via ctx->Driver.UpdateState()
  75  */
  76 void st_invalidate_state(GLcontext * ctx, GLuint new_state)
  77 {
  78    struct st_context *st = st_context(ctx);
  79
  80    st->dirty.mesa |= new_state;
  81    st->dirty.st |= ST_NEW_MESA;
  82
  83    /* This is the only core Mesa module we depend upon.
  84     * No longer use swrast, swsetup, tnl.
  85     */
  86    _vbo_InvalidateState(ctx, new_state);
  87 }
  88
  89
  90 static struct st_context *
  91 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
  92 {
  93    uint i;
  94    struct st_context *st = CALLOC_STRUCT( st_context );
  95
  96    ctx->st = st;
  97
  98    st->ctx = ctx;
  99    st->pipe = pipe;
 100
 101    /* state tracker needs the VBO module */
 102    _vbo_CreateContext(ctx);
 103
 104 #if FEATURE_feedback || FEATURE_drawpix
 105    st->draw = draw_create(); /* for selection/feedback */
 106
 107    /* Disable draw options that might convert points/lines to tris, etc.
 108     * as that would foul-up feedback/selection mode.
 109     */
 110    draw_wide_line_threshold(st->draw, 1000.0f);
 111    draw_wide_point_threshold(st->draw, 1000.0f);
 112    draw_enable_line_stipple(st->draw, FALSE);
 113    draw_enable_point_sprites(st->draw, FALSE);
 114 #endif
 115
 116    st->dirty.mesa = ~0;
 117    st->dirty.st = ~0;
 118
 119    st->cso_context = cso_create_context(pipe);
 120
 121    st_init_atoms( st );
 122    st_init_bitmap(st);
 123    st_init_clear(st);
 124    st_init_draw( st );
 125    st_init_generate_mipmap(st);
 126    st_init_blit(st);
 127
 128    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 129       st->state.sampler_list[i] = &st->state.samplers[i];
 130
 131    /* we want all vertex data to be placed in buffer objects */
 132    vbo_use_buffer_objects(ctx);
 133
 134    /* Need these flags:
 135     */
 136    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 137    st->ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
 138
 139    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 140
 141    st->pixel_xfer.cache = _mesa_new_program_cache();
 142
 143    /* GL limits and extensions */
 144    st_init_limits(st);
 145    st_init_extensions(st);
 146
 147    return st;
 148 }
 149
 150
 151 struct st_context *st_create_context(struct pipe_context *pipe,
 152                                      const __GLcontextModes *visual,
 153                                      struct st_context *share)
 154 {
 155    GLcontext *ctx;
 156    GLcontext *shareCtx = share ? share->ctx : NULL;
 157    struct dd_function_table funcs;
 158
 159    memset(&funcs, 0, sizeof(funcs));
 160    st_init_driver_functions(&funcs);
 161
 162    ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);
 163
 164    return st_create_context_priv(ctx, pipe);
 165 }
 166
 167
 168 static void st_destroy_context_priv( struct st_context *st )
 169 {
 170    uint i;
 171
 172 #if FEATURE_feedback || FEATURE_drawpix
 173    draw_destroy(st->draw);
 174 #endif
 175    st_destroy_atoms( st );
 176    st_destroy_draw( st );
 177    st_destroy_generate_mipmap(st);
 178 #if FEATURE_EXT_framebuffer_blit
 179    st_destroy_blit(st);
 180 #endif
 181    st_destroy_clear(st);
 182 #if FEATURE_drawpix
 183    st_destroy_bitmap(st);
 184    st_destroy_drawpix(st);
 185 #endif
 186 #ifdef FEATURE_OES_draw_texture
 187    st_destroy_drawtex(st);
 188 #endif
 189
 190    _vbo_DestroyContext(st->ctx);
 191
 192    for (i = 0; i < Elements(st->state.sampler_texture); i++) {
 193       pipe_texture_reference(&st->state.sampler_texture[i], NULL);
 194    }
 195
 196    for (i = 0; i < Elements(st->state.constants); i++) {
 197       if (st->state.constants[i].buffer) {
 198          pipe_reference_buffer(st->pipe, &st->state.constants[i].buffer, NULL);
 199       }
 200    }
 201
 202    if (st->default_texture) {
 203       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 204       st->default_texture = NULL;
 205    }
 206
 207    free( st );
 208 }
 209
 210
 211 void st_destroy_context( struct st_context *st )
 212 {
 213    struct pipe_context *pipe = st->pipe;
 214    struct cso_context *cso = st->cso_context;
 215    GLcontext *ctx = st->ctx;
 216
 217    /* need to unbind and destroy CSO objects before anything else */
 218    cso_release_all(st->cso_context);
 219
 220    st_reference_fragprog(st, &st->fp, NULL);
 221    st_reference_vertprog(st, &st->vp, NULL);
 222
 223    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 224
 225    _mesa_free_context_data(ctx);
 226
 227    st_destroy_context_priv(st);
 228
 229    cso_destroy_context(cso);
 230
 231    pipe->destroy( pipe );
 232
 233    free(ctx);
 234 }
 235
 236
 237 void st_make_current(struct st_context *st,
 238                      struct st_framebuffer *draw,
 239                      struct st_framebuffer *read)
 240 {
 241    if (st) {
 242       GLboolean firstTime = st->ctx->FirstTimeCurrent;
 243       _mesa_make_current(st->ctx, &draw->Base, &read->Base);
 244       /* Need to initialize viewport here since draw->Base->Width/Height
 245        * will still be zero at this point.
 246        * This could be improved, but would require rather extensive work
 247        * elsewhere (allocate rb surface storage sooner)
 248        */
 249       if (firstTime) {
 250          GLuint w = draw->InitWidth, h = draw->InitHeight;
 251          _mesa_set_viewport(st->ctx, 0, 0, w, h);
 252          _mesa_set_scissor(st->ctx, 0, 0, w, h);
 253
 254       }
 255    }
 256    else {
 257       _mesa_make_current(NULL, NULL, NULL);
 258    }
 259 }
 260
 261
 262 void st_copy_context_state(struct st_context *dst,
 263                            struct st_context *src,
 264                            uint mask)
 265 {
 266    _mesa_copy_context(dst->ctx, src->ctx, mask);
 267 }
 268
 269
 270
 271 st_proc st_get_proc_address(const char *procname)
 272 {
 273    return (st_proc) _glapi_get_proc_address(procname);
 274 }
 275
 276
 277
 278 void st_init_driver_functions(struct dd_function_table *functions)
 279 {
 280    _mesa_init_glsl_driver_functions(functions);
 281
 282 #if FEATURE_accum
 283    st_init_accum_functions(functions);
 284 #endif
 285 #if FEATURE_EXT_framebuffer_blit
 286    st_init_blit_functions(functions);
 287 #endif
 288    st_init_bufferobject_functions(functions);
 289    st_init_clear_functions(functions);
 290 #if FEATURE_drawpix
 291    st_init_bitmap_functions(functions);
 292    st_init_drawpixels_functions(functions);
 293    st_init_rasterpos_functions(functions);
 294 #endif
 295    st_init_fbo_functions(functions);
 296 #if FEATURE_feedback
 297    st_init_feedback_functions(functions);
 298 #endif
 299    st_init_program_functions(functions);
 300 #if FEATURE_ARB_occlusion_query
 301    st_init_query_functions(functions);
 302 #endif
 303    st_init_readpixels_functions(functions);
 304    st_init_texture_functions(functions);
 305    st_init_flush_functions(functions);
 306    st_init_string_functions(functions);
 307
 308    functions->UpdateState = st_invalidate_state;
 309 }