workbench/libs/mesa/src/gallium/auxiliary/draw/draw_fs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 VMware, Inc.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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  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
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  26  **************************************************************************/
  27
  28 #include "pipe/p_shader_tokens.h"
  29
  30 #include "util/u_math.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_prim.h"
  33
  34 #include "tgsi/tgsi_parse.h"
  35
  36 #include "draw_fs.h"
  37 #include "draw_private.h"
  38 #include "draw_context.h"
  39
  40
  41 struct draw_fragment_shader *
  42 draw_create_fragment_shader(struct draw_context *draw,
  43                             const struct pipe_shader_state *shader)
  44 {
  45    struct draw_fragment_shader *dfs;
  46
  47    dfs = CALLOC_STRUCT(draw_fragment_shader);
  48    if (dfs) {
  49       dfs->base = *shader;
  50       tgsi_scan_shader(shader->tokens, &dfs->info);
  51    }
  52
  53    return dfs;
  54 }
  55
  56
  57 void
  58 draw_bind_fragment_shader(struct draw_context *draw,
  59                           struct draw_fragment_shader *dfs)
  60 {
  61    draw_do_flush(draw, DRAW_FLUSH_STATE_CHANGE);
  62
  63    draw->fs.fragment_shader = dfs;
  64 }
  65
  66
  67 void
  68 draw_delete_fragment_shader(struct draw_context *draw,
  69                             struct draw_fragment_shader *dfs)
  70 {
  71    FREE(dfs);
  72 }
  73