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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 **************************************************************************/
27
28
29#ifndef LP_STATE_FS_H_
30#define LP_STATE_FS_H_
31
32
33#include "pipe/p_compiler.h"
34#include "pipe/p_state.h"
35#include "tgsi/tgsi_scan.h" /* for tgsi_shader_info */
36#include "gallivm/lp_bld_sample.h" /* for struct lp_sampler_static_state */
37#include "gallivm/lp_bld_tgsi.h" /* for lp_tgsi_info */
38#include "lp_bld_interp.h" /* for struct lp_shader_input */
39#include "util/u_inlines.h"
40#include "lp_jit.h"
41
42struct tgsi_token;
43struct lp_fragment_shader;
44
45
46/** Indexes into jit_function[] array */
47#define RAST_WHOLE 0
48#define RAST_EDGE_TEST 1
49
50
51enum lp_fs_kind
52{
53   LP_FS_KIND_GENERAL = 0,
54   LP_FS_KIND_BLIT_RGBA,
55   LP_FS_KIND_BLIT_RGB1,
56   LP_FS_KIND_AERO_MINIFICATION,
57   LP_FS_KIND_LLVM_LINEAR
58};
59
60
61struct lp_sampler_static_state
62{
63   /*
64    * These attributes are effectively interleaved for more sane key handling.
65    * However, there might be lots of null space if the amount of samplers and
66    * textures isn't the same.
67    */
68   struct lp_static_sampler_state sampler_state;
69   struct lp_static_texture_state texture_state;
70};
71
72
73struct lp_image_static_state
74{
75   struct lp_static_texture_state image_state;
76};
77
78struct lp_depth_state
79{
80   unsigned enabled:1;         /**< depth test enabled? */
81   unsigned writemask:1;       /**< allow depth buffer writes? */
82   unsigned func:3;            /**< depth test func (PIPE_FUNC_x) */
83};
84
85struct lp_fragment_shader_variant_key
86{
87   struct lp_depth_state depth;
88   struct pipe_stencil_state stencil[2];
89   struct pipe_blend_state blend;
90
91   struct {
92      unsigned enabled:1;
93      unsigned func:3;
94   } alpha;
95
96   unsigned nr_cbufs:8;
97   unsigned nr_samplers:8;      /* actually derivable from just the shader */
98   unsigned nr_sampler_views:8; /* actually derivable from just the shader */
99   unsigned nr_images:8;        /* actually derivable from just the shader */
100   unsigned flatshade:1;
101   unsigned occlusion_count:1;
102   unsigned resource_1d:1;
103   unsigned depth_clamp:1;
104   unsigned multisample:1;
105   unsigned no_ms_sample_mask_out:1;
106
107   enum pipe_format zsbuf_format;
108   enum pipe_format cbuf_format[PIPE_MAX_COLOR_BUFS];
109
110   uint8_t cbuf_nr_samples[PIPE_MAX_COLOR_BUFS];
111   uint8_t zsbuf_nr_samples;
112   uint8_t coverage_samples;
113   uint8_t min_samples;
114   /* followed by variable number of samplers + images */
115};
116
117#define LP_FS_MAX_VARIANT_KEY_SIZE                                      \
118   (sizeof(struct lp_fragment_shader_variant_key) +                     \
119    PIPE_MAX_SHADER_SAMPLER_VIEWS * sizeof(struct lp_sampler_static_state) +\
120    PIPE_MAX_SHADER_IMAGES * sizeof(struct lp_image_static_state))
121
122static inline size_t
123lp_fs_variant_key_size(unsigned nr_samplers, unsigned nr_images)
124{
125   return (sizeof(struct lp_fragment_shader_variant_key) +
126           nr_samplers * sizeof(struct lp_sampler_static_state) +
127           nr_images * sizeof(struct lp_image_static_state));
128}
129
130static inline struct lp_sampler_static_state *
131lp_fs_variant_key_samplers(const struct lp_fragment_shader_variant_key *key)
132{
133   return (struct lp_sampler_static_state *)&(key[1]);
134}
135
136static inline struct lp_sampler_static_state *
137lp_fs_variant_key_sampler_idx(const struct lp_fragment_shader_variant_key *key, int idx)
138{
139   if (idx >= key->nr_samplers)
140      return NULL;
141   return &lp_fs_variant_key_samplers(key)[idx];
142}
143
144static inline struct lp_image_static_state *
145lp_fs_variant_key_images(struct lp_fragment_shader_variant_key *key)
146{
147   return (struct lp_image_static_state *)
148      &(lp_fs_variant_key_samplers(key)[key->nr_samplers]);
149}
150
151/** doubly-linked list item */
152struct lp_fs_variant_list_item
153{
154   struct lp_fragment_shader_variant *base;
155   struct lp_fs_variant_list_item *next, *prev;
156};
157
158
159struct lp_fragment_shader_variant
160{
161   /*
162    * Whether some primitives can be opaque.
163    */
164   unsigned potentially_opaque:1;
165
166   unsigned blit:1;
167   unsigned linear_input_mask:16;
168   struct pipe_reference reference;
169   boolean opaque;
170
171   struct gallivm_state *gallivm;
172
173   LLVMTypeRef jit_context_ptr_type;
174   LLVMTypeRef jit_thread_data_ptr_type;
175   LLVMTypeRef jit_linear_context_ptr_type;
176
177   LLVMValueRef function[2];
178
179   lp_jit_frag_func jit_function[2];
180
181   lp_jit_linear_func jit_linear;
182   lp_jit_linear_func jit_linear_blit;
183
184   /* Functions within the linear path:
185    */
186   LLVMValueRef linear_function;
187   lp_jit_linear_llvm_func jit_linear_llvm;
188
189   /* Bitmask to say what cbufs are unswizzled */
190   unsigned unswizzled_cbufs;
191
192   /* Total number of LLVM instructions generated */
193   unsigned nr_instrs;
194
195   struct lp_fs_variant_list_item list_item_global, list_item_local;
196   struct lp_fragment_shader *shader;
197
198   /* For debugging/profiling purposes */
199   unsigned no;
200
201   /* key is variable-sized, must be last */
202   struct lp_fragment_shader_variant_key key;
203};
204
205
206/** Subclass of pipe_shader_state */
207struct lp_fragment_shader
208{
209   struct pipe_shader_state base;
210
211   struct pipe_reference reference;
212   struct lp_tgsi_info info;
213
214   /*
215    * Analysis results
216    */
217
218   enum lp_fs_kind kind;
219
220
221   struct lp_fs_variant_list_item variants;
222
223   struct draw_fragment_shader *draw_data;
224
225   /* For debugging/profiling purposes */
226   unsigned variant_key_size;
227   unsigned no;
228   unsigned variants_created;
229   unsigned variants_cached;
230
231   /** Fragment shader input interpolation info */
232   struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
233};
234
235
236void
237llvmpipe_fs_analyse(struct lp_fragment_shader *shader,
238                    const struct tgsi_token *tokens);
239
240void
241llvmpipe_fs_variant_fastpath(struct lp_fragment_shader_variant *variant);
242
243void
244llvmpipe_fs_variant_linear_fastpath(struct lp_fragment_shader_variant *variant);
245
246void
247llvmpipe_fs_variant_linear_llvm(struct llvmpipe_context *lp,
248                                struct lp_fragment_shader *shader,
249                                struct lp_fragment_shader_variant *variant);
250
251void
252lp_debug_fs_variant(struct lp_fragment_shader_variant *variant);
253
254const char *
255lp_debug_fs_kind(enum lp_fs_kind kind);
256
257
258void
259lp_linear_check_variant(struct lp_fragment_shader_variant *variant);
260
261void
262llvmpipe_destroy_fs(struct llvmpipe_context *llvmpipe,
263                    struct lp_fragment_shader *shader);
264
265static inline void
266lp_fs_reference(struct llvmpipe_context *llvmpipe,
267                struct lp_fragment_shader **ptr,
268                struct lp_fragment_shader *shader)
269{
270   struct lp_fragment_shader *old_ptr = *ptr;
271   if (pipe_reference(old_ptr ? &(*ptr)->reference : NULL, shader ? &shader->reference : NULL)) {
272      llvmpipe_destroy_fs(llvmpipe, old_ptr);
273   }
274   *ptr = shader;
275}
276
277void
278llvmpipe_destroy_shader_variant(struct llvmpipe_context *lp,
279                                struct lp_fragment_shader_variant *variant);
280
281static inline void
282lp_fs_variant_reference(struct llvmpipe_context *llvmpipe,
283                        struct lp_fragment_shader_variant **ptr,
284                        struct lp_fragment_shader_variant *variant)
285{
286   struct lp_fragment_shader_variant *old_ptr = *ptr;
287   if (pipe_reference(old_ptr ? &(*ptr)->reference : NULL, variant ? &variant->reference : NULL)) {
288      llvmpipe_destroy_shader_variant(llvmpipe, old_ptr);
289   }
290   *ptr = variant;
291}
292
293#endif /* LP_STATE_FS_H_ */
294