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
  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 first_level;
  54    uint32_t last_level;
  55    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
  56    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
  57    const void *data[PIPE_MAX_TEXTURE_LEVELS];
  58    float min_lod;
  59    float max_lod;
  60    float lod_bias;
  61    float border_color[4];
  62 };
  63
  64 enum {
  65    DRAW_JIT_TEXTURE_WIDTH = 0,
  66    DRAW_JIT_TEXTURE_HEIGHT,
  67    DRAW_JIT_TEXTURE_DEPTH,
  68    DRAW_JIT_TEXTURE_FIRST_LEVEL,
  69    DRAW_JIT_TEXTURE_LAST_LEVEL,
  70    DRAW_JIT_TEXTURE_ROW_STRIDE,
  71    DRAW_JIT_TEXTURE_IMG_STRIDE,
  72    DRAW_JIT_TEXTURE_DATA,
  73    DRAW_JIT_TEXTURE_MIN_LOD,
  74    DRAW_JIT_TEXTURE_MAX_LOD,
  75    DRAW_JIT_TEXTURE_LOD_BIAS,
  76    DRAW_JIT_TEXTURE_BORDER_COLOR,
  77    DRAW_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  78 };
  79
  80 enum {
  81    DRAW_JIT_VERTEX_VERTEX_ID = 0,
  82    DRAW_JIT_VERTEX_CLIP,
  83    DRAW_JIT_VERTEX_PRE_CLIP_POS,
  84    DRAW_JIT_VERTEX_DATA
  85 };
  86
  87 /**
  88  * This structure is passed directly to the generated vertex shader.
  89  *
  90  * It contains the derived state.
  91  *
  92  * Changes here must be reflected in the draw_jit_context_* macros.
  93  * Changes to the ordering should be avoided.
  94  *
  95  * Only use types with a clear size and padding here, in particular prefer the
  96  * stdint.h types to the basic integer types.
  97  */
  98 struct draw_jit_context
  99 {
 100    const float *vs_constants;
 101    const float *gs_constants;
 102    float (*planes) [DRAW_TOTAL_CLIP_PLANES][4];
 103    float *viewport;
 104
 105    struct draw_jit_texture textures[PIPE_MAX_VERTEX_SAMPLERS];
 106 };
 107
 108
 109 #define draw_jit_context_vs_constants(_gallivm, _ptr) \
 110    lp_build_struct_get(_gallivm, _ptr, 0, "vs_constants")
 111
 112 #define draw_jit_context_gs_constants(_gallivm, _ptr) \
 113    lp_build_struct_get(_gallivm, _ptr, 1, "gs_constants")
 114
 115 #define draw_jit_context_planes(_gallivm, _ptr) \
 116    lp_build_struct_get(_gallivm, _ptr, 2, "planes")
 117
 118 #define draw_jit_context_viewport(_gallivm, _ptr) \
 119    lp_build_struct_get(_gallivm, _ptr, 3, "viewport")
 120
 121 #define DRAW_JIT_CTX_TEXTURES 4
 122
 123 #define draw_jit_context_textures(_gallivm, _ptr) \
 124    lp_build_struct_get_ptr(_gallivm, _ptr, DRAW_JIT_CTX_TEXTURES, "textures")
 125
 126 #define draw_jit_header_id(_gallivm, _ptr)              \
 127    lp_build_struct_get_ptr(_gallivm, _ptr, DRAW_JIT_VERTEX_VERTEX_ID, "id")
 128
 129 #define draw_jit_header_clip(_gallivm, _ptr) \
 130    lp_build_struct_get_ptr(_gallivm, _ptr, DRAW_JIT_VERTEX_CLIP, "clip")
 131
 132 #define draw_jit_header_pre_clip_pos(_gallivm, _ptr) \
 133    lp_build_struct_get_ptr(_gallivm, _ptr, DRAW_JIT_VERTEX_PRE_CLIP_POS, "pre_clip_pos")
 134
 135 #define draw_jit_header_data(_gallivm, _ptr)            \
 136    lp_build_struct_get_ptr(_gallivm, _ptr, DRAW_JIT_VERTEX_DATA, "data")
 137
 138
 139 #define draw_jit_vbuffer_stride(_gallivm, _ptr)         \
 140    lp_build_struct_get(_gallivm, _ptr, 0, "stride")
 141
 142 #define draw_jit_vbuffer_offset(_gallivm, _ptr)         \
 143    lp_build_struct_get(_gallivm, _ptr, 1, "buffer_offset")
 144
 145
 146 typedef int
 147 (*draw_jit_vert_func)(struct draw_jit_context *context,
 148                       struct vertex_header *io,
 149                       const char *vbuffers[PIPE_MAX_ATTRIBS],
 150                       unsigned start,
 151                       unsigned count,
 152                       unsigned stride,
 153                       struct pipe_vertex_buffer *vertex_buffers,
 154                       unsigned instance_id);
 155
 156
 157 typedef int
 158 (*draw_jit_vert_func_elts)(struct draw_jit_context *context,
 159                            struct vertex_header *io,
 160                            const char *vbuffers[PIPE_MAX_ATTRIBS],
 161                            const unsigned *fetch_elts,
 162                            unsigned fetch_count,
 163                            unsigned stride,
 164                            struct pipe_vertex_buffer *vertex_buffers,
 165                            unsigned instance_id);
 166
 167 struct draw_llvm_variant_key
 168 {
 169    unsigned nr_vertex_elements:8;
 170    unsigned nr_samplers:8;
 171    unsigned clamp_vertex_color:1;
 172    unsigned clip_xy:1;
 173    unsigned clip_z:1;
 174    unsigned clip_user:1;
 175    unsigned clip_halfz:1;
 176    unsigned bypass_viewport:1;
 177    unsigned need_edgeflags:1;
 178    unsigned ucp_enable:PIPE_MAX_CLIP_PLANES;
 179    unsigned pad:9-PIPE_MAX_CLIP_PLANES;
 180
 181    /* Variable number of vertex elements:
 182     */
 183    struct pipe_vertex_element vertex_element[1];
 184
 185    /* Followed by variable number of samplers:
 186     */
 187 /*   struct lp_sampler_static_state sampler; */
 188 };
 189
 190 #define DRAW_LLVM_MAX_VARIANT_KEY_SIZE \
 191    (sizeof(struct draw_llvm_variant_key) +      \
 192     PIPE_MAX_VERTEX_SAMPLERS * sizeof(struct lp_sampler_static_state) + \
 193     (PIPE_MAX_ATTRIBS-1) * sizeof(struct pipe_vertex_element))
 194
 195
 196 static INLINE size_t
 197 draw_llvm_variant_key_size(unsigned nr_vertex_elements,
 198                            unsigned nr_samplers)
 199 {
 200    return (sizeof(struct draw_llvm_variant_key) +
 201            nr_samplers * sizeof(struct lp_sampler_static_state) +
 202            (nr_vertex_elements - 1) * sizeof(struct pipe_vertex_element));
 203 }
 204
 205
 206 static INLINE struct lp_sampler_static_state *
 207 draw_llvm_variant_key_samplers(struct draw_llvm_variant_key *key)
 208 {
 209    return (struct lp_sampler_static_state *)
 210       &key->vertex_element[key->nr_vertex_elements];
 211 }
 212
 213
 214
 215 struct draw_llvm_variant_list_item
 216 {
 217    struct draw_llvm_variant *base;
 218    struct draw_llvm_variant_list_item *next, *prev;
 219 };
 220
 221 struct draw_llvm_variant
 222 {
 223    LLVMValueRef function;
 224    LLVMValueRef function_elts;
 225    draw_jit_vert_func jit_func;
 226    draw_jit_vert_func_elts jit_func_elts;
 227
 228    struct llvm_vertex_shader *shader;
 229
 230    struct draw_llvm *llvm;
 231    struct draw_llvm_variant_list_item list_item_global;
 232    struct draw_llvm_variant_list_item list_item_local;
 233
 234    /* key is variable-sized, must be last */
 235    struct draw_llvm_variant_key key;
 236 };
 237
 238 struct llvm_vertex_shader {
 239    struct draw_vertex_shader base;
 240
 241    unsigned variant_key_size;
 242    struct draw_llvm_variant_list_item variants;
 243    unsigned variants_created;
 244    unsigned variants_cached;
 245 };
 246
 247 struct draw_llvm {
 248    struct draw_context *draw;
 249
 250    struct draw_jit_context jit_context;
 251
 252    struct gallivm_state *gallivm;
 253
 254    struct draw_llvm_variant_list_item vs_variants_list;
 255    int nr_variants;
 256
 257    /* LLVM JIT builder types */
 258    LLVMTypeRef context_ptr_type;
 259    LLVMTypeRef buffer_ptr_type;
 260    LLVMTypeRef vb_ptr_type;
 261    LLVMTypeRef vertex_header_ptr_type;
 262 };
 263
 264
 265 static INLINE struct llvm_vertex_shader *
 266 llvm_vertex_shader(struct draw_vertex_shader *vs)
 267 {
 268    return (struct llvm_vertex_shader *)vs;
 269 }
 270
 271
 272 struct draw_llvm *
 273 draw_llvm_create(struct draw_context *draw, struct gallivm_state *gallivm);
 274
 275 void
 276 draw_llvm_destroy(struct draw_llvm *llvm);
 277
 278 struct draw_llvm_variant *
 279 draw_llvm_create_variant(struct draw_llvm *llvm,
 280                          unsigned num_vertex_header_attribs,
 281                          const struct draw_llvm_variant_key *key);
 282
 283 void
 284 draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
 285
 286 struct draw_llvm_variant_key *
 287 draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
 288
 289 LLVMValueRef
 290 draw_llvm_translate_from(struct gallivm_state *gallivm,
 291                          LLVMValueRef vbuffer,
 292                          enum pipe_format from_format);
 293
 294 struct lp_build_sampler_soa *
 295 draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
 296                              LLVMValueRef context_ptr);
 297
 298 void
 299 draw_llvm_set_sampler_state(struct draw_context *draw);
 300
 301 void
 302 draw_llvm_set_mapped_texture(struct draw_context *draw,
 303                              unsigned sampler_idx,
 304                              uint32_t width, uint32_t height, uint32_t depth,
 305                              uint32_t first_level, uint32_t last_level,
 306                              uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
 307                              uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
 308                              const void *data[PIPE_MAX_TEXTURE_LEVELS]);
 309
 310 #endif