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 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_max_index(_gallivm, _ptr)      \
 137    lp_build_struct_get(_gallivm, _ptr, 1, "max_index")
 138
 139 #define draw_jit_vbuffer_offset(_gallivm, _ptr)         \
 140    lp_build_struct_get(_gallivm, _ptr, 2, "buffer_offset")
 141
 142
 143 typedef int
 144 (*draw_jit_vert_func)(struct draw_jit_context *context,
 145                       struct vertex_header *io,
 146                       const char *vbuffers[PIPE_MAX_ATTRIBS],
 147                       unsigned start,
 148                       unsigned count,
 149                       unsigned stride,
 150                       struct pipe_vertex_buffer *vertex_buffers,
 151                       unsigned instance_id);
 152
 153
 154 typedef int
 155 (*draw_jit_vert_func_elts)(struct draw_jit_context *context,
 156                            struct vertex_header *io,
 157                            const char *vbuffers[PIPE_MAX_ATTRIBS],
 158                            const unsigned *fetch_elts,
 159                            unsigned fetch_count,
 160                            unsigned stride,
 161                            struct pipe_vertex_buffer *vertex_buffers,
 162                            unsigned instance_id);
 163
 164 struct draw_llvm_variant_key
 165 {
 166    unsigned nr_vertex_elements:8;
 167    unsigned nr_samplers:8;
 168    unsigned clip_xy:1;
 169    unsigned clip_z:1;
 170    unsigned clip_user:1;
 171    unsigned clip_halfz:1;
 172    unsigned bypass_viewport:1;
 173    unsigned need_edgeflags:1;
 174    unsigned nr_planes:4;
 175    unsigned pad:6;
 176
 177    /* Variable number of vertex elements:
 178     */
 179    struct pipe_vertex_element vertex_element[1];
 180
 181    /* Followed by variable number of samplers:
 182     */
 183 /*   struct lp_sampler_static_state sampler; */
 184 };
 185
 186 #define DRAW_LLVM_MAX_VARIANT_KEY_SIZE \
 187    (sizeof(struct draw_llvm_variant_key) +      \
 188     PIPE_MAX_VERTEX_SAMPLERS * sizeof(struct lp_sampler_static_state) + \
 189     (PIPE_MAX_ATTRIBS-1) * sizeof(struct pipe_vertex_element))
 190
 191
 192 static INLINE size_t
 193 draw_llvm_variant_key_size(unsigned nr_vertex_elements,
 194                            unsigned nr_samplers)
 195 {
 196    return (sizeof(struct draw_llvm_variant_key) +
 197            nr_samplers * sizeof(struct lp_sampler_static_state) +
 198            (nr_vertex_elements - 1) * sizeof(struct pipe_vertex_element));
 199 }
 200
 201
 202 static INLINE struct lp_sampler_static_state *
 203 draw_llvm_variant_key_samplers(struct draw_llvm_variant_key *key)
 204 {
 205    return (struct lp_sampler_static_state *)
 206       &key->vertex_element[key->nr_vertex_elements];
 207 }
 208
 209
 210
 211 struct draw_llvm_variant_list_item
 212 {
 213    struct draw_llvm_variant *base;
 214    struct draw_llvm_variant_list_item *next, *prev;
 215 };
 216
 217 struct draw_llvm_variant
 218 {
 219    LLVMValueRef function;
 220    LLVMValueRef function_elts;
 221    draw_jit_vert_func jit_func;
 222    draw_jit_vert_func_elts jit_func_elts;
 223
 224    struct llvm_vertex_shader *shader;
 225
 226    struct draw_llvm *llvm;
 227    struct draw_llvm_variant_list_item list_item_global;
 228    struct draw_llvm_variant_list_item list_item_local;
 229
 230    /* key is variable-sized, must be last */
 231    struct draw_llvm_variant_key key;
 232 };
 233
 234 struct llvm_vertex_shader {
 235    struct draw_vertex_shader base;
 236
 237    unsigned variant_key_size;
 238    struct draw_llvm_variant_list_item variants;
 239    unsigned variants_created;
 240    unsigned variants_cached;
 241 };
 242
 243 struct draw_llvm {
 244    struct draw_context *draw;
 245
 246    struct draw_jit_context jit_context;
 247
 248    struct gallivm_state *gallivm;
 249
 250    struct draw_llvm_variant_list_item vs_variants_list;
 251    int nr_variants;
 252
 253    /* LLVM JIT builder types */
 254    LLVMTypeRef context_ptr_type;
 255    LLVMTypeRef buffer_ptr_type;
 256    LLVMTypeRef vb_ptr_type;
 257    LLVMTypeRef vertex_header_ptr_type;
 258 };
 259
 260
 261 static INLINE struct llvm_vertex_shader *
 262 llvm_vertex_shader(struct draw_vertex_shader *vs)
 263 {
 264    return (struct llvm_vertex_shader *)vs;
 265 }
 266
 267
 268 struct draw_llvm *
 269 draw_llvm_create(struct draw_context *draw, struct gallivm_state *gallivm);
 270
 271 void
 272 draw_llvm_destroy(struct draw_llvm *llvm);
 273
 274 struct draw_llvm_variant *
 275 draw_llvm_create_variant(struct draw_llvm *llvm,
 276                          unsigned num_vertex_header_attribs,
 277                          const struct draw_llvm_variant_key *key);
 278
 279 void
 280 draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
 281
 282 struct draw_llvm_variant_key *
 283 draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
 284
 285 LLVMValueRef
 286 draw_llvm_translate_from(struct gallivm_state *gallivm,
 287                          LLVMValueRef vbuffer,
 288                          enum pipe_format from_format);
 289
 290 struct lp_build_sampler_soa *
 291 draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
 292                              LLVMValueRef context_ptr);
 293
 294 void
 295 draw_llvm_set_sampler_state(struct draw_context *draw);
 296
 297 void
 298 draw_llvm_set_mapped_texture(struct draw_context *draw,
 299                              unsigned sampler_idx,
 300                              uint32_t width, uint32_t height, uint32_t depth,
 301                              uint32_t last_level,
 302                              uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
 303                              uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
 304                              const void *data[PIPE_MAX_TEXTURE_LEVELS]);
 305
 306 #endif