src/gallium/auxiliary/draw/draw_llvm.h

   1 /**************************************************************************
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   3  * Copyright 2010 VMware, Inc.
   4  * All Rights Reserved.
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   7  * copy of this software and associated documentation files (the
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  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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  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
  45 struct draw_llvm;
  46 struct llvm_vertex_shader;
  47
  48 struct draw_jit_texture
  49 {
  50    uint32_t width;
  51    uint32_t height;
  52    uint32_t depth;
  53    uint32_t last_level;
  54    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
  55    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
  56    const void *data[PIPE_MAX_TEXTURE_LEVELS];
  57    float min_lod;
  58    float max_lod;
  59    float lod_bias;
  60    float border_color[4];
  61 };
  62
  63 enum {
  64    DRAW_JIT_TEXTURE_WIDTH = 0,
  65    DRAW_JIT_TEXTURE_HEIGHT,
  66    DRAW_JIT_TEXTURE_DEPTH,
  67    DRAW_JIT_TEXTURE_LAST_LEVEL,
  68    DRAW_JIT_TEXTURE_ROW_STRIDE,
  69    DRAW_JIT_TEXTURE_IMG_STRIDE,
  70    DRAW_JIT_TEXTURE_DATA,
  71    DRAW_JIT_TEXTURE_MIN_LOD,
  72    DRAW_JIT_TEXTURE_MAX_LOD,
  73    DRAW_JIT_TEXTURE_LOD_BIAS,
  74    DRAW_JIT_TEXTURE_BORDER_COLOR,
  75    DRAW_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  76 };
  77
  78 enum {
  79    DRAW_JIT_VERTEX_VERTEX_ID = 0,
  80    DRAW_JIT_VERTEX_CLIP,
  81    DRAW_JIT_VERTEX_DATA
  82 };
  83
  84 /**
  85  * This structure is passed directly to the generated vertex shader.
  86  *
  87  * It contains the derived state.
  88  *
  89  * Changes here must be reflected in the draw_jit_context_* macros.
  90  * Changes to the ordering should be avoided.
  91  *
  92  * Only use types with a clear size and padding here, in particular prefer the
  93  * stdint.h types to the basic integer types.
  94  */
  95 struct draw_jit_context
  96 {
  97    const float *vs_constants;
  98    const float *gs_constants;
  99    float (*planes) [12][4];
 100    float *viewport;
 101
 102    struct draw_jit_texture textures[PIPE_MAX_VERTEX_SAMPLERS];
 103 };
 104
 105
 106 #define draw_jit_context_vs_constants(_gallivm, _ptr) \
 107    lp_build_struct_get(_gallivm, _ptr, 0, "vs_constants")
 108
 109 #define draw_jit_context_gs_constants(_gallivm, _ptr) \
 110    lp_build_struct_get(_gallivm, _ptr, 1, "gs_constants")
 111
 112 #define draw_jit_context_planes(_gallivm, _ptr) \
 113    lp_build_struct_get(_gallivm, _ptr, 2, "planes")
 114
 115 #define draw_jit_context_viewport(_gallivm, _ptr) \
 116    lp_build_struct_get(_gallivm, _ptr, 3, "viewport")
 117
 118 #define DRAW_JIT_CTX_TEXTURES 4
 119
 120 #define draw_jit_context_textures(_gallivm, _ptr) \
 121    lp_build_struct_get_ptr(_gallivm, _ptr, DRAW_JIT_CTX_TEXTURES, "textures")
 122
 123 #define draw_jit_header_id(_gallivm, _ptr)              \
 124    lp_build_struct_get_ptr(_gallivm, _ptr, 0, "id")
 125
 126 #define draw_jit_header_clip(_gallivm, _ptr) \
 127    lp_build_struct_get_ptr(_gallivm, _ptr, 1, "clip")
 128
 129 #define draw_jit_header_data(_gallivm, _ptr)            \
 130    lp_build_struct_get_ptr(_gallivm, _ptr, 2, "data")
 131
 132
 133 #define draw_jit_vbuffer_stride(_gallivm, _ptr)         \
 134    lp_build_struct_get(_gallivm, _ptr, 0, "stride")
 135
 136 #define draw_jit_vbuffer_offset(_gallivm, _ptr)         \
 137    lp_build_struct_get(_gallivm, _ptr, 1, "buffer_offset")
 138
 139
 140 typedef int
 141 (*draw_jit_vert_func)(struct draw_jit_context *context,
 142                       struct vertex_header *io,
 143                       const char *vbuffers[PIPE_MAX_ATTRIBS],
 144                       unsigned start,
 145                       unsigned count,
 146                       unsigned stride,
 147                       struct pipe_vertex_buffer *vertex_buffers,
 148                       unsigned instance_id);
 149
 150
 151 typedef int
 152 (*draw_jit_vert_func_elts)(struct draw_jit_context *context,
 153                            struct vertex_header *io,
 154                            const char *vbuffers[PIPE_MAX_ATTRIBS],
 155                            const unsigned *fetch_elts,
 156                            unsigned fetch_count,
 157                            unsigned stride,
 158                            struct pipe_vertex_buffer *vertex_buffers,
 159                            unsigned instance_id);
 160
 161 struct draw_llvm_variant_key
 162 {
 163    unsigned nr_vertex_elements:8;
 164    unsigned nr_samplers:8;
 165    unsigned clip_xy:1;
 166    unsigned clip_z:1;
 167    unsigned clip_user:1;
 168    unsigned clip_halfz:1;
 169    unsigned bypass_viewport:1;
 170    unsigned need_edgeflags:1;
 171    unsigned nr_planes:4;
 172    unsigned pad:6;
 173
 174    /* Variable number of vertex elements:
 175     */
 176    struct pipe_vertex_element vertex_element[1];
 177
 178    /* Followed by variable number of samplers:
 179     */
 180 /*   struct lp_sampler_static_state sampler; */
 181 };
 182
 183 #define DRAW_LLVM_MAX_VARIANT_KEY_SIZE \
 184    (sizeof(struct draw_llvm_variant_key) +      \
 185     PIPE_MAX_VERTEX_SAMPLERS * sizeof(struct lp_sampler_static_state) + \
 186     (PIPE_MAX_ATTRIBS-1) * sizeof(struct pipe_vertex_element))
 187
 188
 189 static INLINE size_t
 190 draw_llvm_variant_key_size(unsigned nr_vertex_elements,
 191                            unsigned nr_samplers)
 192 {
 193    return (sizeof(struct draw_llvm_variant_key) +
 194            nr_samplers * sizeof(struct lp_sampler_static_state) +
 195            (nr_vertex_elements - 1) * sizeof(struct pipe_vertex_element));
 196 }
 197
 198
 199 static INLINE struct lp_sampler_static_state *
 200 draw_llvm_variant_key_samplers(struct draw_llvm_variant_key *key)
 201 {
 202    return (struct lp_sampler_static_state *)
 203       &key->vertex_element[key->nr_vertex_elements];
 204 }
 205
 206
 207
 208 struct draw_llvm_variant_list_item
 209 {
 210    struct draw_llvm_variant *base;
 211    struct draw_llvm_variant_list_item *next, *prev;
 212 };
 213
 214 struct draw_llvm_variant
 215 {
 216    LLVMValueRef function;
 217    LLVMValueRef function_elts;
 218    draw_jit_vert_func jit_func;
 219    draw_jit_vert_func_elts jit_func_elts;
 220
 221    struct llvm_vertex_shader *shader;
 222
 223    struct draw_llvm *llvm;
 224    struct draw_llvm_variant_list_item list_item_global;
 225    struct draw_llvm_variant_list_item list_item_local;
 226
 227    /* key is variable-sized, must be last */
 228    struct draw_llvm_variant_key key;
 229 };
 230
 231 struct llvm_vertex_shader {
 232    struct draw_vertex_shader base;
 233
 234    unsigned variant_key_size;
 235    struct draw_llvm_variant_list_item variants;
 236    unsigned variants_created;
 237    unsigned variants_cached;
 238 };
 239
 240 struct draw_llvm {
 241    struct draw_context *draw;
 242
 243    struct draw_jit_context jit_context;
 244
 245    struct gallivm_state *gallivm;
 246
 247    struct draw_llvm_variant_list_item vs_variants_list;
 248    int nr_variants;
 249
 250    /* LLVM JIT builder types */
 251    LLVMTypeRef context_ptr_type;
 252    LLVMTypeRef buffer_ptr_type;
 253    LLVMTypeRef vb_ptr_type;
 254    LLVMTypeRef vertex_header_ptr_type;
 255 };
 256
 257
 258 static INLINE struct llvm_vertex_shader *
 259 llvm_vertex_shader(struct draw_vertex_shader *vs)
 260 {
 261    return (struct llvm_vertex_shader *)vs;
 262 }
 263
 264
 265 struct draw_llvm *
 266 draw_llvm_create(struct draw_context *draw, struct gallivm_state *gallivm);
 267
 268 void
 269 draw_llvm_destroy(struct draw_llvm *llvm);
 270
 271 struct draw_llvm_variant *
 272 draw_llvm_create_variant(struct draw_llvm *llvm,
 273                          unsigned num_vertex_header_attribs,
 274                          const struct draw_llvm_variant_key *key);
 275
 276 void
 277 draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
 278
 279 struct draw_llvm_variant_key *
 280 draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
 281
 282 LLVMValueRef
 283 draw_llvm_translate_from(struct gallivm_state *gallivm,
 284                          LLVMValueRef vbuffer,
 285                          enum pipe_format from_format);
 286
 287 struct lp_build_sampler_soa *
 288 draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
 289                              LLVMValueRef context_ptr);
 290
 291 void
 292 draw_llvm_set_sampler_state(struct draw_context *draw);
 293
 294 void
 295 draw_llvm_set_mapped_texture(struct draw_context *draw,
 296                              unsigned sampler_idx,
 297                              uint32_t width, uint32_t height, uint32_t depth,
 298                              uint32_t last_level,
 299                              uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
 300                              uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
 301                              const void *data[PIPE_MAX_TEXTURE_LEVELS]);
 302
 303 #endif