draw_llvm.h revision 5f996e2b1d09dad64c088ccabb1a4a53ebfb8102 
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_offset(_gallivm, _ptr)         \
137   lp_build_struct_get(_gallivm, _ptr, 1, "buffer_offset")
138
139
140typedef 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
151typedef 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
161struct draw_llvm_variant_key
162{
163   unsigned nr_vertex_elements:8;
164   unsigned nr_samplers:8;
165   unsigned clamp_vertex_color:1;
166   unsigned clip_xy:1;
167   unsigned clip_z:1;
168   unsigned clip_user:1;
169   unsigned clip_halfz:1;
170   unsigned bypass_viewport:1;
171   unsigned need_edgeflags:1;
172   unsigned nr_planes:4;
173   unsigned pad:5;
174
175   /* Variable number of vertex elements:
176    */
177   struct pipe_vertex_element vertex_element[1];
178
179   /* Followed by variable number of samplers:
180    */
181/*   struct lp_sampler_static_state sampler; */
182};
183
184#define DRAW_LLVM_MAX_VARIANT_KEY_SIZE \
185   (sizeof(struct draw_llvm_variant_key) +	\
186    PIPE_MAX_VERTEX_SAMPLERS * sizeof(struct lp_sampler_static_state) +	\
187    (PIPE_MAX_ATTRIBS-1) * sizeof(struct pipe_vertex_element))
188
189
190static INLINE size_t
191draw_llvm_variant_key_size(unsigned nr_vertex_elements,
192			   unsigned nr_samplers)
193{
194   return (sizeof(struct draw_llvm_variant_key) +
195	   nr_samplers * sizeof(struct lp_sampler_static_state) +
196	   (nr_vertex_elements - 1) * sizeof(struct pipe_vertex_element));
197}
198
199
200static INLINE struct lp_sampler_static_state *
201draw_llvm_variant_key_samplers(struct draw_llvm_variant_key *key)
202{
203   return (struct lp_sampler_static_state *)
204      &key->vertex_element[key->nr_vertex_elements];
205}
206
207
208
209struct draw_llvm_variant_list_item
210{
211   struct draw_llvm_variant *base;
212   struct draw_llvm_variant_list_item *next, *prev;
213};
214
215struct draw_llvm_variant
216{
217   LLVMValueRef function;
218   LLVMValueRef function_elts;
219   draw_jit_vert_func jit_func;
220   draw_jit_vert_func_elts jit_func_elts;
221
222   struct llvm_vertex_shader *shader;
223
224   struct draw_llvm *llvm;
225   struct draw_llvm_variant_list_item list_item_global;
226   struct draw_llvm_variant_list_item list_item_local;
227
228   /* key is variable-sized, must be last */
229   struct draw_llvm_variant_key key;
230};
231
232struct llvm_vertex_shader {
233   struct draw_vertex_shader base;
234
235   unsigned variant_key_size;
236   struct draw_llvm_variant_list_item variants;
237   unsigned variants_created;
238   unsigned variants_cached;
239};
240
241struct draw_llvm {
242   struct draw_context *draw;
243
244   struct draw_jit_context jit_context;
245
246   struct gallivm_state *gallivm;
247
248   struct draw_llvm_variant_list_item vs_variants_list;
249   int nr_variants;
250
251   /* LLVM JIT builder types */
252   LLVMTypeRef context_ptr_type;
253   LLVMTypeRef buffer_ptr_type;
254   LLVMTypeRef vb_ptr_type;
255   LLVMTypeRef vertex_header_ptr_type;
256};
257
258
259static INLINE struct llvm_vertex_shader *
260llvm_vertex_shader(struct draw_vertex_shader *vs)
261{
262   return (struct llvm_vertex_shader *)vs;
263}
264
265
266struct draw_llvm *
267draw_llvm_create(struct draw_context *draw, struct gallivm_state *gallivm);
268
269void
270draw_llvm_destroy(struct draw_llvm *llvm);
271
272struct draw_llvm_variant *
273draw_llvm_create_variant(struct draw_llvm *llvm,
274			 unsigned num_vertex_header_attribs,
275			 const struct draw_llvm_variant_key *key);
276
277void
278draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
279
280struct draw_llvm_variant_key *
281draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
282
283LLVMValueRef
284draw_llvm_translate_from(struct gallivm_state *gallivm,
285                         LLVMValueRef vbuffer,
286                         enum pipe_format from_format);
287
288struct lp_build_sampler_soa *
289draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
290                             LLVMValueRef context_ptr);
291
292void
293draw_llvm_set_sampler_state(struct draw_context *draw);
294
295void
296draw_llvm_set_mapped_texture(struct draw_context *draw,
297                             unsigned sampler_idx,
298                             uint32_t width, uint32_t height, uint32_t depth,
299                             uint32_t last_level,
300                             uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
301                             uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
302                             const void *data[PIPE_MAX_TEXTURE_LEVELS]);
303
304#endif
305