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 #include "gallivm/gallivm.h"
  46
  47 struct draw_llvm_vertex_shader {
  48    struct draw_vertex_shader base;
  49    struct gallivm_prog *llvm_prog;
  50    struct tgsi_exec_machine *machine;
  51 };
  52
  53
  54 static void
  55 vs_llvm_prepare( struct draw_vertex_shader *base,
  56                  struct draw_context *draw )
  57 {
  58 }
  59
  60
  61
  62
  63 static void
  64 vs_llvm_run_linear( struct draw_vertex_shader *base,
  65                    const float (*input)[4],
  66                    float (*output)[4],
  67                    const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
  68                    unsigned count,
  69                    unsigned input_stride,
  70                    unsigned output_stride )
  71 {
  72    struct draw_llvm_vertex_shader *shader =
  73       (struct draw_llvm_vertex_shader *)base;
  74
  75    gallivm_cpu_vs_exec(shader->llvm_prog, shader->machine,
  76                        input, base->info.num_inputs, output, base->info.num_outputs,
  77                        (const float (*)[4])constants[0],
  78                        count, input_stride, output_stride);
  79 }
  80
  81
  82
  83 static void
  84 vs_llvm_delete( struct draw_vertex_shader *base )
  85 {
  86    struct draw_llvm_vertex_shader *shader =
  87       (struct draw_llvm_vertex_shader *)base;
  88
  89    /* Do something to free compiled shader:
  90     */
  91
  92    FREE( (void*) shader->base.state.tokens );
  93    FREE( shader );
  94 }
  95
  96
  97
  98
  99 struct draw_vertex_shader *
 100 draw_create_vs_llvm(struct draw_context *draw,
 101                     const struct pipe_shader_state *templ)
 102 {
 103    struct draw_llvm_vertex_shader *vs;
 104
 105    vs = CALLOC_STRUCT( draw_llvm_vertex_shader );
 106    if (vs == NULL)
 107       return NULL;
 108
 109    /* we make a private copy of the tokens */
 110    vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
 111    if (!vs->base.state.tokens) {
 112       FREE(vs);
 113       return NULL;
 114    }
 115
 116    tgsi_scan_shader(vs->base.state.tokens, &vs->base.info);
 117
 118    vs->base.draw = draw;
 119    vs->base.prepare = vs_llvm_prepare;
 120    vs->base.create_varient = draw_vs_varient_generic;
 121    vs->base.run_linear = vs_llvm_run_linear;
 122    vs->base.delete = vs_llvm_delete;
 123    vs->machine = draw->vs.machine;
 124
 125    {
 126       struct gallivm_ir *ir = gallivm_ir_new(GALLIVM_VS);
 127       gallivm_ir_set_layout(ir, GALLIVM_SOA);
 128       gallivm_ir_set_components(ir, 4);
 129       gallivm_ir_fill_from_tgsi(ir, vs->base.state.tokens);
 130       vs->llvm_prog = gallivm_ir_compile(ir);
 131       gallivm_ir_delete(ir);
 132    }
 133
 134    draw->vs.engine = gallivm_global_cpu_engine();
 135
 136    /* XXX: Why are there two versions of this?  Shouldn't creating the
 137     *      engine be a separate operation to compiling a shader?
 138     */
 139    if (!draw->vs.engine) {
 140       draw->vs.engine = gallivm_cpu_engine_create(vs->llvm_prog);
 141    }
 142    else {
 143       gallivm_cpu_jit_compile(draw->vs.engine, vs->llvm_prog);
 144    }
 145
 146    return &vs->base;
 147 }
 148
 149
 150
 151
 152
 153 #else
 154
 155 struct draw_vertex_shader *
 156 draw_create_vs_llvm(struct draw_context *draw,
 157                           const struct pipe_shader_state *shader)
 158 {
 159    return NULL;
 160 }
 161
 162 #endif