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1 /**************************************************************************
2  *
3  * Copyright 2009 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 /**
29  * @file
30  * C - JIT interfaces
31  *
32  * @author Jose Fonseca <jfonseca@vmware.com>
33  */
34 
35 #ifndef LP_JIT_H
36 #define LP_JIT_H
37 
38 
39 #include "gallivm/lp_bld_struct.h"
40 #include "gallivm/lp_bld_limits.h"
41 
42 #include "pipe/p_state.h"
43 #include "lp_texture.h"
44 
45 
46 struct lp_build_format_cache;
47 struct lp_fragment_shader_variant;
48 struct llvmpipe_screen;
49 
50 
51 struct lp_jit_texture
52 {
53    uint32_t width;        /* same as number of elements */
54    uint32_t height;
55    uint32_t depth;        /* doubles as array size */
56    uint32_t first_level;
57    uint32_t last_level;
58    const void *base;
59    uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];
60    uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];
61    uint32_t mip_offsets[LP_MAX_TEXTURE_LEVELS];
62 };
63 
64 
65 struct lp_jit_sampler
66 {
67    float min_lod;
68    float max_lod;
69    float lod_bias;
70    float border_color[4];
71 };
72 
73 
74 struct lp_jit_viewport
75 {
76    float min_depth;
77    float max_depth;
78 };
79 
80 
81 enum {
82    LP_JIT_TEXTURE_WIDTH = 0,
83    LP_JIT_TEXTURE_HEIGHT,
84    LP_JIT_TEXTURE_DEPTH,
85    LP_JIT_TEXTURE_FIRST_LEVEL,
86    LP_JIT_TEXTURE_LAST_LEVEL,
87    LP_JIT_TEXTURE_BASE,
88    LP_JIT_TEXTURE_ROW_STRIDE,
89    LP_JIT_TEXTURE_IMG_STRIDE,
90    LP_JIT_TEXTURE_MIP_OFFSETS,
91    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
92 };
93 
94 
95 enum {
96    LP_JIT_SAMPLER_MIN_LOD,
97    LP_JIT_SAMPLER_MAX_LOD,
98    LP_JIT_SAMPLER_LOD_BIAS,
99    LP_JIT_SAMPLER_BORDER_COLOR,
100    LP_JIT_SAMPLER_NUM_FIELDS  /* number of fields above */
101 };
102 
103 
104 enum {
105    LP_JIT_VIEWPORT_MIN_DEPTH,
106    LP_JIT_VIEWPORT_MAX_DEPTH,
107    LP_JIT_VIEWPORT_NUM_FIELDS /* number of fields above */
108 };
109 
110 
111 /**
112  * This structure is passed directly to the generated fragment shader.
113  *
114  * It contains the derived state.
115  *
116  * Changes here must be reflected in the lp_jit_context_* macros and
117  * lp_jit_init_types function. Changes to the ordering should be avoided.
118  *
119  * Only use types with a clear size and padding here, in particular prefer the
120  * stdint.h types to the basic integer types.
121  */
122 struct lp_jit_context
123 {
124    const float *constants[LP_MAX_TGSI_CONST_BUFFERS];
125    int num_constants[LP_MAX_TGSI_CONST_BUFFERS];
126 
127    float alpha_ref_value;
128 
129    uint32_t stencil_ref_front, stencil_ref_back;
130 
131    uint8_t *u8_blend_color;
132    float *f_blend_color;
133 
134    struct lp_jit_viewport *viewports;
135 
136    struct lp_jit_texture textures[PIPE_MAX_SHADER_SAMPLER_VIEWS];
137    struct lp_jit_sampler samplers[PIPE_MAX_SAMPLERS];
138 };
139 
140 
141 /**
142  * These enum values must match the position of the fields in the
143  * lp_jit_context struct above.
144  */
145 enum {
146    LP_JIT_CTX_CONSTANTS = 0,
147    LP_JIT_CTX_NUM_CONSTANTS,
148    LP_JIT_CTX_ALPHA_REF,
149    LP_JIT_CTX_STENCIL_REF_FRONT,
150    LP_JIT_CTX_STENCIL_REF_BACK,
151    LP_JIT_CTX_U8_BLEND_COLOR,
152    LP_JIT_CTX_F_BLEND_COLOR,
153    LP_JIT_CTX_VIEWPORTS,
154    LP_JIT_CTX_TEXTURES,
155    LP_JIT_CTX_SAMPLERS,
156    LP_JIT_CTX_COUNT
157 };
158 
159 
160 #define lp_jit_context_constants(_gallivm, _ptr) \
161    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
162 
163 #define lp_jit_context_num_constants(_gallivm, _ptr) \
164    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_NUM_CONSTANTS, "num_constants")
165 
166 #define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \
167    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
168 
169 #define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \
170    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
171 
172 #define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \
173    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
174 
175 #define lp_jit_context_u8_blend_color(_gallivm, _ptr) \
176    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_U8_BLEND_COLOR, "u8_blend_color")
177 
178 #define lp_jit_context_f_blend_color(_gallivm, _ptr) \
179    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_F_BLEND_COLOR, "f_blend_color")
180 
181 #define lp_jit_context_viewports(_gallivm, _ptr) \
182    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_VIEWPORTS, "viewports")
183 
184 #define lp_jit_context_textures(_gallivm, _ptr) \
185    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")
186 
187 #define lp_jit_context_samplers(_gallivm, _ptr) \
188    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_SAMPLERS, "samplers")
189 
190 
191 struct lp_jit_thread_data
192 {
193    struct lp_build_format_cache *cache;
194    uint64_t vis_counter;
195 
196    /*
197     * Non-interpolated rasterizer state passed through to the fragment shader.
198     */
199    struct {
200       uint32_t viewport_index;
201    } raster_state;
202 };
203 
204 
205 enum {
206    LP_JIT_THREAD_DATA_CACHE = 0,
207    LP_JIT_THREAD_DATA_COUNTER,
208    LP_JIT_THREAD_DATA_RASTER_STATE_VIEWPORT_INDEX,
209    LP_JIT_THREAD_DATA_COUNT
210 };
211 
212 
213 #define lp_jit_thread_data_cache(_gallivm, _ptr) \
214    lp_build_struct_get(_gallivm, _ptr, LP_JIT_THREAD_DATA_CACHE, "cache")
215 
216 #define lp_jit_thread_data_counter(_gallivm, _ptr) \
217    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_THREAD_DATA_COUNTER, "counter")
218 
219 #define lp_jit_thread_data_raster_state_viewport_index(_gallivm, _ptr) \
220    lp_build_struct_get(_gallivm, _ptr, \
221                        LP_JIT_THREAD_DATA_RASTER_STATE_VIEWPORT_INDEX, \
222                        "raster_state.viewport_index")
223 
224 /**
225  * typedef for fragment shader function
226  *
227  * @param context       jit context
228  * @param x             block start x
229  * @param y             block start y
230  * @param facing        is front facing
231  * @param a0            shader input a0
232  * @param dadx          shader input dadx
233  * @param dady          shader input dady
234  * @param color         color buffer
235  * @param depth         depth buffer
236  * @param mask          mask of visible pixels in block
237  * @param thread_data   task thread data
238  * @param stride        color buffer row stride in bytes
239  * @param depth_stride  depth buffer row stride in bytes
240  */
241 typedef void
242 (*lp_jit_frag_func)(const struct lp_jit_context *context,
243                     uint32_t x,
244                     uint32_t y,
245                     uint32_t facing,
246                     const void *a0,
247                     const void *dadx,
248                     const void *dady,
249                     uint8_t **color,
250                     uint8_t *depth,
251                     uint32_t mask,
252                     struct lp_jit_thread_data *thread_data,
253                     unsigned *stride,
254                     unsigned depth_stride);
255 
256 
257 void
258 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
259 
260 
261 boolean
262 lp_jit_screen_init(struct llvmpipe_screen *screen);
263 
264 
265 void
266 lp_jit_init_types(struct lp_fragment_shader_variant *lp);
267 
268 
269 #endif /* LP_JIT_H */
270