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 "pipe/p_shader_tokens.h"
  36 #include "draw_private.h"
  37 #include "draw_context.h"
  38 #include "draw_vs.h"
  39
  40 #include "tgsi/tgsi_parse.h"
  41
  42 #ifdef MESA_LLVM
  43
  44 #include "gallivm/gallivm.h"
  45
  46 struct draw_llvm_vertex_shader {
  47    struct draw_vertex_shader base;
  48    struct gallivm_prog *llvm_prog;
  49    struct tgsi_exec_machine *machine;
  50 };
  51
  52
  53 static void
  54 vs_llvm_prepare( struct draw_vertex_shader *base,
  55                  struct draw_context *draw )
  56 {
  57 }
  58
  59
  60
  61
  62 static void
  63 vs_llvm_run_linear( struct draw_vertex_shader *base,
  64                    const float (*input)[4],
  65                    float (*output)[4],
  66                    const float (*constants)[4],
  67                    unsigned count,
  68                    unsigned input_stride,
  69                    unsigned output_stride )
  70 {
  71    struct draw_llvm_vertex_shader *shader =
  72       (struct draw_llvm_vertex_shader *)base;
  73
  74    gallivm_cpu_vs_exec(shader->llvm_prog, shader->machine,
  75                        input, base->info.num_inputs, output, base->info.num_outputs,
  76                        constants, count, input_stride, output_stride);
  77 }
  78
  79
  80
  81 static void
  82 vs_llvm_delete( struct draw_vertex_shader *base )
  83 {
  84    struct draw_llvm_vertex_shader *shader =
  85       (struct draw_llvm_vertex_shader *)base;
  86
  87    /* Do something to free compiled shader:
  88     */
  89
  90    FREE( (void*) shader->base.state.tokens );
  91    FREE( shader );
  92 }
  93
  94
  95
  96
  97 struct draw_vertex_shader *
  98 draw_create_vs_llvm(struct draw_context *draw,
  99                     const struct pipe_shader_state *templ)
 100 {
 101    struct draw_llvm_vertex_shader *vs;
 102
 103    vs = CALLOC_STRUCT( draw_llvm_vertex_shader );
 104    if (vs == NULL)
 105       return NULL;
 106
 107    /* we make a private copy of the tokens */
 108    vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
 109    if (!vs->base.state.tokens) {
 110       FREE(vs);
 111       return NULL;
 112    }
 113
 114    tgsi_scan_shader(vs->base.state.tokens, &vs->base.info);
 115
 116    vs->base.draw = draw;
 117    vs->base.prepare = vs_llvm_prepare;
 118    vs->base.create_varient = draw_vs_varient_generic;
 119    vs->base.run_linear = vs_llvm_run_linear;
 120    vs->base.delete = vs_llvm_delete;
 121    vs->machine = &draw->vs.machine;
 122
 123    {
 124       struct gallivm_ir *ir = gallivm_ir_new(GALLIVM_VS);
 125       gallivm_ir_set_layout(ir, GALLIVM_SOA);
 126       gallivm_ir_set_components(ir, 4);
 127       gallivm_ir_fill_from_tgsi(ir, vs->base.state.tokens);
 128       vs->llvm_prog = gallivm_ir_compile(ir);
 129       gallivm_ir_delete(ir);
 130    }
 131
 132    draw->vs.engine = gallivm_global_cpu_engine();
 133
 134    /* XXX: Why are there two versions of this?  Shouldn't creating the
 135     *      engine be a separate operation to compiling a shader?
 136     */
 137    if (!draw->vs.engine) {
 138       draw->vs.engine = gallivm_cpu_engine_create(vs->llvm_prog);
 139    }
 140    else {
 141       gallivm_cpu_jit_compile(draw->vs.engine, vs->llvm_prog);
 142    }
 143
 144    return &vs->base;
 145 }
 146
 147
 148
 149
 150
 151 #else
 152
 153 struct draw_vertex_shader *
 154 draw_create_vs_llvm(struct draw_context *draw,
 155                           const struct pipe_shader_state *shader)
 156 {
 157    return NULL;
 158 }
 159
 160 #endif