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
41#include "pipe/p_state.h"
42#include "lp_texture.h"
43
44
45struct lp_fragment_shader_variant;
46struct llvmpipe_screen;
47
48
49struct lp_jit_texture
50{
51   uint32_t width;
52   uint32_t height;
53   uint32_t depth;
54   uint32_t first_level;
55   uint32_t last_level;
56   uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];
57   uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];
58   const void *data[LP_MAX_TEXTURE_LEVELS];
59   /* sampler state, actually */
60   float min_lod;
61   float max_lod;
62   float lod_bias;
63   float border_color[4];
64};
65
66
67enum {
68   LP_JIT_TEXTURE_WIDTH = 0,
69   LP_JIT_TEXTURE_HEIGHT,
70   LP_JIT_TEXTURE_DEPTH,
71   LP_JIT_TEXTURE_FIRST_LEVEL,
72   LP_JIT_TEXTURE_LAST_LEVEL,
73   LP_JIT_TEXTURE_ROW_STRIDE,
74   LP_JIT_TEXTURE_IMG_STRIDE,
75   LP_JIT_TEXTURE_DATA,
76   LP_JIT_TEXTURE_MIN_LOD,
77   LP_JIT_TEXTURE_MAX_LOD,
78   LP_JIT_TEXTURE_LOD_BIAS,
79   LP_JIT_TEXTURE_BORDER_COLOR,
80   LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
81};
82
83
84
85/**
86 * This structure is passed directly to the generated fragment shader.
87 *
88 * It contains the derived state.
89 *
90 * Changes here must be reflected in the lp_jit_context_* macros and
91 * lp_jit_init_types function. Changes to the ordering should be avoided.
92 *
93 * Only use types with a clear size and padding here, in particular prefer the
94 * stdint.h types to the basic integer types.
95 */
96struct lp_jit_context
97{
98   const float *constants;
99
100   float alpha_ref_value;
101
102   uint32_t stencil_ref_front, stencil_ref_back;
103
104   /* FIXME: store (also?) in floats */
105   uint8_t *blend_color;
106
107   struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
108};
109
110
111/**
112 * These enum values must match the position of the fields in the
113 * lp_jit_context struct above.
114 */
115enum {
116   LP_JIT_CTX_CONSTANTS = 0,
117   LP_JIT_CTX_ALPHA_REF,
118   LP_JIT_CTX_STENCIL_REF_FRONT,
119   LP_JIT_CTX_STENCIL_REF_BACK,
120   LP_JIT_CTX_BLEND_COLOR,
121   LP_JIT_CTX_TEXTURES,
122   LP_JIT_CTX_COUNT
123};
124
125
126#define lp_jit_context_constants(_gallivm, _ptr) \
127   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
128
129#define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \
130   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
131
132#define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \
133   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
134
135#define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \
136   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
137
138#define lp_jit_context_blend_color(_gallivm, _ptr) \
139   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_BLEND_COLOR, "blend_color")
140
141#define lp_jit_context_textures(_gallivm, _ptr) \
142   lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")
143
144
145
146typedef void
147(*lp_jit_frag_func)(const struct lp_jit_context *context,
148                    uint32_t x,
149                    uint32_t y,
150                    uint32_t facing,
151                    const void *a0,
152                    const void *dadx,
153                    const void *dady,
154                    uint8_t **color,
155                    void *depth,
156                    uint32_t mask,
157                    uint32_t *counter);
158
159
160void
161lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
162
163
164void
165lp_jit_screen_init(struct llvmpipe_screen *screen);
166
167
168void
169lp_jit_init_types(struct lp_fragment_shader_variant *lp);
170
171
172#endif /* LP_JIT_H */
173