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
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  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 DRAW_LLVM_H
  29 #define DRAW_LLVM_H
  30
  31 #include "draw/draw_private.h"
  32
  33 #include "draw/draw_vs.h"
  34 #include "gallivm/lp_bld_sample.h"
  35
  36 #include "pipe/p_context.h"
  37 #include "util/u_simple_list.h"
  38
  39 #include <llvm-c/Core.h>
  40 #include <llvm-c/Analysis.h>
  41 #include <llvm-c/Target.h>
  42 #include <llvm-c/ExecutionEngine.h>
  43
  44 #define DRAW_MAX_TEXTURE_LEVELS 13  /* 4K x 4K for now */
  45
  46 struct draw_llvm;
  47 struct llvm_vertex_shader;
  48
  49 struct draw_jit_texture
  50 {
  51    uint32_t width;
  52    uint32_t height;
  53    uint32_t depth;
  54    uint32_t last_level;
  55    uint32_t row_stride[DRAW_MAX_TEXTURE_LEVELS];
  56    uint32_t img_stride[DRAW_MAX_TEXTURE_LEVELS];
  57    const void *data[DRAW_MAX_TEXTURE_LEVELS];
  58 };
  59
  60 enum {
  61    DRAW_JIT_TEXTURE_WIDTH = 0,
  62    DRAW_JIT_TEXTURE_HEIGHT,
  63    DRAW_JIT_TEXTURE_DEPTH,
  64    DRAW_JIT_TEXTURE_LAST_LEVEL,
  65    DRAW_JIT_TEXTURE_ROW_STRIDE,
  66    DRAW_JIT_TEXTURE_IMG_STRIDE,
  67    DRAW_JIT_TEXTURE_DATA,
  68    DRAW_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  69 };
  70
  71 enum {
  72    DRAW_JIT_VERTEX_VERTEX_ID = 0,
  73    DRAW_JIT_VERTEX_CLIP,
  74    DRAW_JIT_VERTEX_DATA
  75 };
  76
  77 /**
  78  * This structure is passed directly to the generated vertex shader.
  79  *
  80  * It contains the derived state.
  81  *
  82  * Changes here must be reflected in the draw_jit_context_* macros.
  83  * Changes to the ordering should be avoided.
  84  *
  85  * Only use types with a clear size and padding here, in particular prefer the
  86  * stdint.h types to the basic integer types.
  87  */
  88 struct draw_jit_context
  89 {
  90    const float *vs_constants;
  91    const float *gs_constants;
  92
  93
  94    struct draw_jit_texture textures[PIPE_MAX_VERTEX_SAMPLERS];
  95 };
  96
  97
  98 #define draw_jit_context_vs_constants(_builder, _ptr) \
  99    lp_build_struct_get(_builder, _ptr, 0, "vs_constants")
 100
 101 #define draw_jit_context_gs_constants(_builder, _ptr) \
 102    lp_build_struct_get(_builder, _ptr, 1, "gs_constants")
 103
 104 #define DRAW_JIT_CTX_TEXTURES 2
 105
 106 #define draw_jit_context_textures(_builder, _ptr) \
 107    lp_build_struct_get_ptr(_builder, _ptr, DRAW_JIT_CTX_TEXTURES, "textures")
 108
 109
 110
 111 #define draw_jit_header_id(_builder, _ptr)              \
 112    lp_build_struct_get_ptr(_builder, _ptr, 0, "id")
 113
 114 #define draw_jit_header_clip(_builder, _ptr) \
 115    lp_build_struct_get(_builder, _ptr, 1, "clip")
 116
 117 #define draw_jit_header_data(_builder, _ptr)            \
 118    lp_build_struct_get_ptr(_builder, _ptr, 2, "data")
 119
 120
 121 #define draw_jit_vbuffer_stride(_builder, _ptr)         \
 122    lp_build_struct_get(_builder, _ptr, 0, "stride")
 123
 124 #define draw_jit_vbuffer_max_index(_builder, _ptr)      \
 125    lp_build_struct_get(_builder, _ptr, 1, "max_index")
 126
 127 #define draw_jit_vbuffer_offset(_builder, _ptr)         \
 128    lp_build_struct_get(_builder, _ptr, 2, "buffer_offset")
 129
 130
 131 typedef void
 132 (*draw_jit_vert_func)(struct draw_jit_context *context,
 133                       struct vertex_header *io,
 134                       const char *vbuffers[PIPE_MAX_ATTRIBS],
 135                       unsigned start,
 136                       unsigned count,
 137                       unsigned stride,
 138                       struct pipe_vertex_buffer *vertex_buffers,
 139                       unsigned instance_id);
 140
 141
 142 typedef void
 143 (*draw_jit_vert_func_elts)(struct draw_jit_context *context,
 144                            struct vertex_header *io,
 145                            const char *vbuffers[PIPE_MAX_ATTRIBS],
 146                            const unsigned *fetch_elts,
 147                            unsigned fetch_count,
 148                            unsigned stride,
 149                            struct pipe_vertex_buffer *vertex_buffers,
 150                            unsigned instance_id);
 151
 152 struct draw_llvm_variant_key
 153 {
 154    unsigned nr_vertex_elements:16;
 155    unsigned nr_samplers:16;
 156
 157    /* Variable number of vertex elements:
 158     */
 159    struct pipe_vertex_element vertex_element[1];
 160
 161    /* Followed by variable number of samplers:
 162     */
 163 /*   struct lp_sampler_static_state sampler; */
 164 };
 165
 166 #define DRAW_LLVM_MAX_VARIANT_KEY_SIZE \
 167    (sizeof(struct draw_llvm_variant_key) +      \
 168     PIPE_MAX_VERTEX_SAMPLERS * sizeof(struct lp_sampler_static_state) + \
 169     (PIPE_MAX_ATTRIBS-1) * sizeof(struct pipe_vertex_element))
 170
 171
 172 static INLINE size_t
 173 draw_llvm_variant_key_size(unsigned nr_vertex_elements,
 174                            unsigned nr_samplers)
 175 {
 176    return (sizeof(struct draw_llvm_variant_key) +
 177            nr_samplers * sizeof(struct lp_sampler_static_state) +
 178            (nr_vertex_elements - 1) * sizeof(struct pipe_vertex_element));
 179 }
 180
 181
 182 static INLINE struct lp_sampler_static_state *
 183 draw_llvm_variant_key_samplers(struct draw_llvm_variant_key *key)
 184 {
 185    return (struct lp_sampler_static_state *)
 186       &key->vertex_element[key->nr_vertex_elements];
 187 }
 188
 189
 190
 191 struct draw_llvm_variant_list_item
 192 {
 193    struct draw_llvm_variant *base;
 194    struct draw_llvm_variant_list_item *next, *prev;
 195 };
 196
 197 struct draw_llvm_variant
 198 {
 199    LLVMValueRef function;
 200    LLVMValueRef function_elts;
 201    draw_jit_vert_func jit_func;
 202    draw_jit_vert_func_elts jit_func_elts;
 203
 204    struct llvm_vertex_shader *shader;
 205
 206    struct draw_llvm *llvm;
 207    struct draw_llvm_variant_list_item list_item_global;
 208    struct draw_llvm_variant_list_item list_item_local;
 209
 210    /* key is variable-sized, must be last */
 211    struct draw_llvm_variant_key key;
 212    /* key is variable-sized, must be last */
 213 };
 214
 215 struct llvm_vertex_shader {
 216    struct draw_vertex_shader base;
 217
 218    unsigned variant_key_size;
 219    struct draw_llvm_variant_list_item variants;
 220    unsigned variants_created;
 221    unsigned variants_cached;
 222 };
 223
 224 struct draw_llvm {
 225    struct draw_context *draw;
 226
 227    struct draw_jit_context jit_context;
 228
 229    struct draw_llvm_variant_list_item vs_variants_list;
 230    int nr_variants;
 231
 232    LLVMModuleRef module;
 233    LLVMExecutionEngineRef engine;
 234    LLVMModuleProviderRef provider;
 235    LLVMTargetDataRef target;
 236    LLVMPassManagerRef pass;
 237
 238    LLVMTypeRef context_ptr_type;
 239    LLVMTypeRef vertex_header_ptr_type;
 240    LLVMTypeRef buffer_ptr_type;
 241    LLVMTypeRef vb_ptr_type;
 242 };
 243
 244 static INLINE struct llvm_vertex_shader *
 245 llvm_vertex_shader(struct draw_vertex_shader *vs)
 246 {
 247    return (struct llvm_vertex_shader *)vs;
 248 }
 249
 250
 251 struct draw_llvm *
 252 draw_llvm_create(struct draw_context *draw);
 253
 254 void
 255 draw_llvm_destroy(struct draw_llvm *llvm);
 256
 257 struct draw_llvm_variant *
 258 draw_llvm_create_variant(struct draw_llvm *llvm,
 259                          unsigned num_vertex_header_attribs,
 260                          const struct draw_llvm_variant_key *key);
 261
 262 void
 263 draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
 264
 265 struct draw_llvm_variant_key *
 266 draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
 267
 268 LLVMValueRef
 269 draw_llvm_translate_from(LLVMBuilderRef builder,
 270                          LLVMValueRef vbuffer,
 271                          enum pipe_format from_format);
 272
 273 struct lp_build_sampler_soa *
 274 draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
 275                              LLVMValueRef context_ptr);
 276
 277 void
 278 draw_llvm_set_mapped_texture(struct draw_context *draw,
 279                              unsigned sampler_idx,
 280                              uint32_t width, uint32_t height, uint32_t depth,
 281                              uint32_t last_level,
 282                              uint32_t row_stride[DRAW_MAX_TEXTURE_LEVELS],
 283                              uint32_t img_stride[DRAW_MAX_TEXTURE_LEVELS],
 284                              const void *data[DRAW_MAX_TEXTURE_LEVELS]);
 285
 286 #endif