Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | Download | RSS feed

  1. /**************************************************************************
  2.  *
  3.  * Copyright 2003 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.  
  29. #include "main/glheader.h"
  30. #include "main/context.h"
  31.  
  32. #include "pipe/p_defines.h"
  33. #include "st_context.h"
  34. #include "st_atom.h"
  35. #include "st_cb_bitmap.h"
  36. #include "st_program.h"
  37. #include "st_manager.h"
  38.  
  39.  
  40. /**
  41.  * This is used to initialize st->atoms[].
  42.  */
  43. static const struct st_tracked_state *atoms[] =
  44. {
  45.    &st_update_depth_stencil_alpha,
  46.    &st_update_clip,
  47.  
  48.    &st_finalize_textures,
  49.    &st_update_fp,
  50.    &st_update_gp,
  51.    &st_update_vp,
  52.  
  53.    &st_update_rasterizer,
  54.    &st_update_polygon_stipple,
  55.    &st_update_viewport,
  56.    &st_update_scissor,
  57.    &st_update_blend,
  58.    &st_update_sampler,
  59.    &st_update_texture,
  60.    &st_update_framebuffer,
  61.    &st_update_msaa,
  62.    &st_update_vs_constants,
  63.    &st_update_gs_constants,
  64.    &st_update_fs_constants,
  65.    &st_update_pixel_transfer
  66. };
  67.  
  68.  
  69. void st_init_atoms( struct st_context *st )
  70. {
  71.    /* no-op */
  72. }
  73.  
  74.  
  75. void st_destroy_atoms( struct st_context *st )
  76. {
  77.    /* no-op */
  78. }
  79.  
  80.  
  81. /***********************************************************************
  82.  */
  83.  
  84. static GLboolean check_state( const struct st_state_flags *a,
  85.                               const struct st_state_flags *b )
  86. {
  87.    return ((a->mesa & b->mesa) ||
  88.            (a->st & b->st));
  89. }
  90.  
  91. static void accumulate_state( struct st_state_flags *a,
  92.                               const struct st_state_flags *b )
  93. {
  94.    a->mesa |= b->mesa;
  95.    a->st |= b->st;
  96. }
  97.  
  98.  
  99. static void xor_states( struct st_state_flags *result,
  100.                              const struct st_state_flags *a,
  101.                               const struct st_state_flags *b )
  102. {
  103.    result->mesa = a->mesa ^ b->mesa;
  104.    result->st = a->st ^ b->st;
  105. }
  106.  
  107.  
  108. /* Too complex to figure out, just check every time:
  109.  */
  110. static void check_program_state( struct st_context *st )
  111. {
  112.    struct gl_context *ctx = st->ctx;
  113.  
  114.    if (ctx->VertexProgram._Current != &st->vp->Base)
  115.       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  116.  
  117.    if (ctx->FragmentProgram._Current != &st->fp->Base)
  118.       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  119.  
  120.    if (ctx->GeometryProgram._Current != &st->gp->Base)
  121.       st->dirty.st |= ST_NEW_GEOMETRY_PROGRAM;
  122. }
  123.  
  124.  
  125. /***********************************************************************
  126.  * Update all derived state:
  127.  */
  128.  
  129. void st_validate_state( struct st_context *st )
  130. {
  131.    struct st_state_flags *state = &st->dirty;
  132.    GLuint i;
  133.  
  134.    /* The bitmap cache is immune to pixel unpack changes.
  135.     * Note that GLUT makes several calls to glPixelStore for each
  136.     * bitmap char it draws so this is an important check.
  137.     */
  138.    if (state->mesa & ~_NEW_PACKUNPACK)
  139.       st_flush_bitmap_cache(st);
  140.  
  141.    check_program_state( st );
  142.  
  143.    st_manager_validate_framebuffers(st);
  144.  
  145.    if (state->st == 0)
  146.       return;
  147.  
  148.    /*printf("%s %x/%x\n", __FUNCTION__, state->mesa, state->st);*/
  149.  
  150.    if (1) {
  151.       /* Debug version which enforces various sanity checks on the
  152.        * state flags which are generated and checked to help ensure
  153.        * state atoms are ordered correctly in the list.
  154.        */
  155.       struct st_state_flags examined, prev;      
  156.       memset(&examined, 0, sizeof(examined));
  157.       prev = *state;
  158.  
  159.       for (i = 0; i < Elements(atoms); i++) {    
  160.          const struct st_tracked_state *atom = atoms[i];
  161.          struct st_state_flags generated;
  162.          
  163.          /*printf("atom %s %x/%x\n", atom->name, atom->dirty.mesa, atom->dirty.st);*/
  164.  
  165.          if (!(atom->dirty.mesa || atom->dirty.st) ||
  166.              !atom->update) {
  167.             printf("malformed atom %s\n", atom->name);
  168.             assert(0);
  169.          }
  170.  
  171.          if (check_state(state, &atom->dirty)) {
  172.             atoms[i]->update( st );
  173.             /*printf("after: %x\n", atom->dirty.mesa);*/
  174.          }
  175.  
  176.          accumulate_state(&examined, &atom->dirty);
  177.  
  178.          /* generated = (prev ^ state)
  179.           * if (examined & generated)
  180.           *     fail;
  181.           */
  182.          xor_states(&generated, &prev, state);
  183.          assert(!check_state(&examined, &generated));
  184.          prev = *state;
  185.       }
  186.       /*printf("\n");*/
  187.  
  188.    }
  189.    else {
  190.       for (i = 0; i < Elements(atoms); i++) {    
  191.          if (check_state(state, &atoms[i]->dirty))
  192.             atoms[i]->update( st );
  193.       }
  194.    }
  195.  
  196.    memset(state, 0, sizeof(*state));
  197. }
  198.  
  199.  
  200.  
  201.