draw_llvm.h revision efc82aef35a2aac5d2ed9774f6d28f2626796416 
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
45struct draw_llvm;
46struct llvm_vertex_shader;
47
48struct 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
63enum {
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
78enum {
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 */
95struct 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
143typedef 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
154typedef 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
164struct 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
192static INLINE size_t
193draw_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
202static INLINE struct lp_sampler_static_state *
203draw_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
211struct draw_llvm_variant_list_item
212{
213   struct draw_llvm_variant *base;
214   struct draw_llvm_variant_list_item *next, *prev;
215};
216
217struct 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   /* key is variable-sized, must be last */
233};
234
235struct llvm_vertex_shader {
236   struct draw_vertex_shader base;
237
238   unsigned variant_key_size;
239   struct draw_llvm_variant_list_item variants;
240   unsigned variants_created;
241   unsigned variants_cached;
242};
243
244struct draw_llvm {
245   struct draw_context *draw;
246
247   struct draw_jit_context jit_context;
248
249   struct gallivm_state *gallivm;
250
251   struct draw_llvm_variant_list_item vs_variants_list;
252   int nr_variants;
253
254   /* LLVM JIT builder types */
255   LLVMTypeRef context_ptr_type;
256   LLVMTypeRef buffer_ptr_type;
257   LLVMTypeRef vb_ptr_type;
258   LLVMTypeRef vertex_header_ptr_type;
259};
260
261
262static INLINE struct llvm_vertex_shader *
263llvm_vertex_shader(struct draw_vertex_shader *vs)
264{
265   return (struct llvm_vertex_shader *)vs;
266}
267
268
269struct draw_llvm *
270draw_llvm_create(struct draw_context *draw, struct gallivm_state *gallivm);
271
272void
273draw_llvm_destroy(struct draw_llvm *llvm);
274
275struct draw_llvm_variant *
276draw_llvm_create_variant(struct draw_llvm *llvm,
277			 unsigned num_vertex_header_attribs,
278			 const struct draw_llvm_variant_key *key);
279
280void
281draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
282
283struct draw_llvm_variant_key *
284draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
285
286LLVMValueRef
287draw_llvm_translate_from(struct gallivm_state *gallivm,
288                         LLVMValueRef vbuffer,
289                         enum pipe_format from_format);
290
291struct lp_build_sampler_soa *
292draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
293                             LLVMValueRef context_ptr);
294
295void
296draw_llvm_set_sampler_state(struct draw_context *draw);
297
298void
299draw_llvm_set_mapped_texture(struct draw_context *draw,
300                             unsigned sampler_idx,
301                             uint32_t width, uint32_t height, uint32_t depth,
302                             uint32_t last_level,
303                             uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
304                             uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
305                             const void *data[PIPE_MAX_TEXTURE_LEVELS]);
306
307#endif
308