src/gallium/auxiliary/draw/draw_fs.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 VMware, Inc.
   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
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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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
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  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 #include "nir/nir_to_tgsi_info.h"
  36
  37 #include "draw_fs.h"
  38 #include "draw_private.h"
  39 #include "draw_context.h"
  40
  41
  42 struct draw_fragment_shader *
  43 draw_create_fragment_shader(struct draw_context *draw,
  44                             const struct pipe_shader_state *shader)
  45 {
  46    struct draw_fragment_shader *dfs;
  47
  48    dfs = CALLOC_STRUCT(draw_fragment_shader);
  49    if (dfs) {
  50       dfs->base = *shader;
  51       if (shader->type == PIPE_SHADER_IR_TGSI)
  52          tgsi_scan_shader(shader->tokens, &dfs->info);
  53       else
  54          nir_tgsi_scan_shader(shader->ir.nir, &dfs->info, true);
  55    }
  56
  57    return dfs;
  58 }
  59
  60
  61 void
  62 draw_bind_fragment_shader(struct draw_context *draw,
  63                           struct draw_fragment_shader *dfs)
  64 {
  65    draw_do_flush(draw, DRAW_FLUSH_STATE_CHANGE);
  66
  67    draw->fs.fragment_shader = dfs;
  68 }
  69
  70
  71 void
  72 draw_delete_fragment_shader(struct draw_context *draw,
  73                             struct draw_fragment_shader *dfs)
  74 {
  75    FREE(dfs);
  76 }
  77