src/gallium/auxiliary/draw/draw_llvm.h

   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
   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 VMWARE 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 #ifndef HAVE_LLVM_H
  29 #define HAVE_LLVM_H
  30
  31 #include "draw/draw_private.h"
  32
  33 #include "draw/draw_vs.h"
  34
  35 #include "pipe/p_context.h"
  36 #include "util/u_simple_list.h"
  37
  38 #include <llvm-c/Core.h>
  39 #include <llvm-c/Analysis.h>
  40 #include <llvm-c/Target.h>
  41 #include <llvm-c/ExecutionEngine.h>
  42
  43 struct draw_llvm;
  44 struct llvm_vertex_shader;
  45
  46 struct draw_jit_texture
  47 {
  48    uint32_t width;
  49    uint32_t height;
  50    uint32_t stride;
  51    const void *data;
  52 };
  53
  54 enum {
  55    DRAW_JIT_TEXTURE_WIDTH = 0,
  56    DRAW_JIT_TEXTURE_HEIGHT,
  57    DRAW_JIT_TEXTURE_STRIDE,
  58    DRAW_JIT_TEXTURE_DATA
  59 };
  60
  61 enum {
  62    DRAW_JIT_VERTEX_VERTEX_ID = 0,
  63    DRAW_JIT_VERTEX_CLIP,
  64    DRAW_JIT_VERTEX_DATA
  65 };
  66
  67 /**
  68  * This structure is passed directly to the generated vertex shader.
  69  *
  70  * It contains the derived state.
  71  *
  72  * Changes here must be reflected in the draw_jit_context_* macros.
  73  * Changes to the ordering should be avoided.
  74  *
  75  * Only use types with a clear size and padding here, in particular prefer the
  76  * stdint.h types to the basic integer types.
  77  */
  78 struct draw_jit_context
  79 {
  80    const float *vs_constants;
  81    const float *gs_constants;
  82
  83
  84    struct draw_jit_texture textures[PIPE_MAX_SAMPLERS];
  85 };
  86
  87
  88 #define draw_jit_context_vs_constants(_builder, _ptr) \
  89    lp_build_struct_get(_builder, _ptr, 0, "vs_constants")
  90
  91 #define draw_jit_context_gs_constants(_builder, _ptr) \
  92    lp_build_struct_get(_builder, _ptr, 1, "gs_constants")
  93
  94 #define DRAW_JIT_CONTEXT_TEXTURES_INDEX 2
  95
  96 #define draw_jit_context_textures(_builder, _ptr) \
  97    lp_build_struct_get_ptr(_builder, _ptr, DRAW_JIT_CONTEXT_TEXTURES_INDEX, "textures")
  98
  99
 100
 101 #define draw_jit_header_id(_builder, _ptr)              \
 102    lp_build_struct_get_ptr(_builder, _ptr, 0, "id")
 103
 104 #define draw_jit_header_clip(_builder, _ptr) \
 105    lp_build_struct_get(_builder, _ptr, 1, "clip")
 106
 107 #define draw_jit_header_data(_builder, _ptr)            \
 108    lp_build_struct_get_ptr(_builder, _ptr, 2, "data")
 109
 110
 111 #define draw_jit_vbuffer_stride(_builder, _ptr)         \
 112    lp_build_struct_get(_builder, _ptr, 0, "stride")
 113
 114 #define draw_jit_vbuffer_max_index(_builder, _ptr)      \
 115    lp_build_struct_get(_builder, _ptr, 1, "max_index")
 116
 117 #define draw_jit_vbuffer_offset(_builder, _ptr)         \
 118    lp_build_struct_get(_builder, _ptr, 2, "buffer_offset")
 119
 120
 121 typedef void
 122 (*draw_jit_vert_func)(struct draw_jit_context *context,
 123                       struct vertex_header *io,
 124                       const char *vbuffers[PIPE_MAX_ATTRIBS],
 125                       unsigned start,
 126                       unsigned count,
 127                       unsigned stride,
 128                       struct pipe_vertex_buffer *vertex_buffers);
 129
 130
 131 typedef void
 132 (*draw_jit_vert_func_elts)(struct draw_jit_context *context,
 133                            struct vertex_header *io,
 134                            const char *vbuffers[PIPE_MAX_ATTRIBS],
 135                            const unsigned *fetch_elts,
 136                            unsigned fetch_count,
 137                            unsigned stride,
 138                            struct pipe_vertex_buffer *vertex_buffers);
 139
 140 struct draw_llvm_variant_key
 141 {
 142    struct pipe_vertex_element vertex_element[PIPE_MAX_ATTRIBS];
 143    unsigned                   nr_vertex_elements;
 144    struct pipe_shader_state   vs;
 145 };
 146
 147 struct draw_llvm_variant_list_item
 148 {
 149    struct draw_llvm_variant *base;
 150    struct draw_llvm_variant_list_item *next, *prev;
 151 };
 152
 153 struct draw_llvm_variant
 154 {
 155    struct draw_llvm_variant_key key;
 156    LLVMValueRef function;
 157    LLVMValueRef function_elts;
 158    draw_jit_vert_func jit_func;
 159    draw_jit_vert_func_elts jit_func_elts;
 160
 161    struct llvm_vertex_shader *shader;
 162
 163    struct draw_llvm *llvm;
 164    struct draw_llvm_variant_list_item list_item_global;
 165    struct draw_llvm_variant_list_item list_item_local;
 166 };
 167
 168 struct llvm_vertex_shader {
 169    struct draw_vertex_shader base;
 170
 171    struct draw_llvm_variant_list_item variants;
 172    unsigned variants_created;
 173    unsigned variants_cached;
 174 };
 175
 176 struct draw_llvm {
 177    struct draw_context *draw;
 178
 179    struct draw_jit_context jit_context;
 180
 181    struct draw_llvm_variant_list_item vs_variants_list;
 182    int nr_variants;
 183
 184    LLVMModuleRef module;
 185    LLVMExecutionEngineRef engine;
 186    LLVMModuleProviderRef provider;
 187    LLVMTargetDataRef target;
 188    LLVMPassManagerRef pass;
 189
 190    LLVMTypeRef context_ptr_type;
 191    LLVMTypeRef vertex_header_ptr_type;
 192    LLVMTypeRef buffer_ptr_type;
 193    LLVMTypeRef vb_ptr_type;
 194 };
 195
 196 static struct llvm_vertex_shader *
 197 llvm_vertex_shader(struct draw_vertex_shader *vs)
 198 {
 199    return (struct llvm_vertex_shader *)vs;
 200 }
 201
 202
 203 struct draw_llvm *
 204 draw_llvm_create(struct draw_context *draw);
 205
 206 void
 207 draw_llvm_destroy(struct draw_llvm *llvm);
 208
 209 struct draw_llvm_variant *
 210 draw_llvm_create_variant(struct draw_llvm *llvm, int num_inputs);
 211
 212 void
 213 draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
 214
 215 void
 216 draw_llvm_make_variant_key(struct draw_llvm *llvm,
 217                            struct draw_llvm_variant_key *key);
 218
 219 LLVMValueRef
 220 draw_llvm_translate_from(LLVMBuilderRef builder,
 221                          LLVMValueRef vbuffer,
 222                          enum pipe_format from_format);
 223
 224 #endif