src/gallium/auxiliary/draw/draw_vs_llvm.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  /*
  29   * Authors:
  30   *   Zack Rusin
  31   *   Keith Whitwell <keith@tungstengraphics.com>
  32   *   Brian Paul
  33   */
  34
  35 #include "util/u_memory.h"
  36 #include "pipe/p_shader_tokens.h"
  37 #include "draw_private.h"
  38 #include "draw_context.h"
  39 #include "draw_vs.h"
  40
  41 #include "tgsi/tgsi_parse.h"
  42
  43 #ifdef MESA_LLVM
  44
  45 struct draw_llvm_vertex_shader {
  46    struct draw_vertex_shader base;
  47    struct tgsi_exec_machine *machine;
  48 };
  49
  50
  51 static void
  52 vs_llvm_prepare( struct draw_vertex_shader *base,
  53                  struct draw_context *draw )
  54 {
  55 }
  56
  57
  58 static void
  59 vs_llvm_run_linear( struct draw_vertex_shader *base,
  60                    const float (*input)[4],
  61                    float (*output)[4],
  62                    const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
  63                    unsigned count,
  64                    unsigned input_stride,
  65                    unsigned output_stride )
  66 {
  67    struct draw_llvm_vertex_shader *shader =
  68       (struct draw_llvm_vertex_shader *)base;
  69 }
  70
  71
  72
  73 static void
  74 vs_llvm_delete( struct draw_vertex_shader *base )
  75 {
  76    struct draw_llvm_vertex_shader *shader =
  77       (struct draw_llvm_vertex_shader *)base;
  78
  79    /* Do something to free compiled shader:
  80     */
  81
  82    FREE( (void*) shader->base.state.tokens );
  83    FREE( shader );
  84 }
  85
  86
  87
  88
  89 struct draw_vertex_shader *
  90 draw_create_vs_llvm(struct draw_context *draw,
  91                     const struct pipe_shader_state *templ)
  92 {
  93    struct draw_llvm_vertex_shader *vs;
  94
  95    vs = CALLOC_STRUCT( draw_llvm_vertex_shader );
  96    if (vs == NULL)
  97       return NULL;
  98
  99    /* we make a private copy of the tokens */
 100    vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
 101    if (!vs->base.state.tokens) {
 102       FREE(vs);
 103       return NULL;
 104    }
 105
 106    tgsi_scan_shader(vs->base.state.tokens, &vs->base.info);
 107
 108    vs->base.draw = draw;
 109    vs->base.prepare = vs_llvm_prepare;
 110    vs->base.create_varient = draw_vs_varient_generic;
 111    vs->base.run_linear = vs_llvm_run_linear;
 112    vs->base.delete = vs_llvm_delete;
 113    vs->machine = draw->vs.machine;
 114
 115    return &vs->base;
 116 }
 117
 118
 119
 120
 121
 122 #else
 123
 124 struct draw_vertex_shader *
 125 draw_create_vs_llvm(struct draw_context *draw,
 126                           const struct pipe_shader_state *shader)
 127 {
 128    return NULL;
 129 }
 130
 131 #endif