1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* TGSI to LLVM IR translation.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#ifndef LP_BLD_TGSI_H
#define LP_BLD_TGSI_H
#include "gallivm/lp_bld.h"
#include "pipe/p_compiler.h"
#include "pipe/p_state.h"
#include "tgsi/tgsi_scan.h"
struct tgsi_token;
struct tgsi_shader_info;
struct lp_type;
struct lp_build_context;
struct lp_build_mask_context;
struct gallivm_state;
enum lp_build_tex_modifier {
LP_BLD_TEX_MODIFIER_NONE = 0,
LP_BLD_TEX_MODIFIER_PROJECTED,
LP_BLD_TEX_MODIFIER_LOD_BIAS,
LP_BLD_TEX_MODIFIER_EXPLICIT_LOD,
LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV
};
/**
* Describe a channel of a register.
*
* The value can be a:
* - immediate value (i.e. derived from a IMM register)
* - CONST[n].x/y/z/w
* - IN[n].x/y/z/w
* - undetermined (when .file == TGSI_FILE_NULL)
*
* This is one of the analysis results, and is used to described
* the output color in terms of inputs.
*/
struct lp_tgsi_channel_info
{
unsigned file:4; /* TGSI_FILE_* */
unsigned swizzle:3; /* PIPE_SWIZZLE_x */
union {
uint32_t index;
float value; /* for TGSI_FILE_IMMEDIATE */
} u;
};
/**
* Describe a texture sampler interpolator.
*
* The interpolation is described in terms of regular inputs.
*/
struct lp_tgsi_texture_info
{
struct lp_tgsi_channel_info coord[4];
unsigned target:8; /* TGSI_TEXTURE_* */
unsigned unit:8; /* Sampler unit */
unsigned modifier:8; /* LP_BLD_TEX_MODIFIER_* */
};
struct lp_tgsi_info
{
struct tgsi_shader_info base;
/*
* Whether any of the texture opcodes access a register file other than
* TGSI_FILE_INPUT.
*
* We could also handle TGSI_FILE_CONST/IMMEDIATE here, but there is little
* benefit.
*/
unsigned indirect_textures:1;
/*
* Texture opcode description. Aimed at detecting and described direct
* texture opcodes.
*/
unsigned num_texs;
struct lp_tgsi_texture_info tex[PIPE_MAX_SAMPLERS];
/*
* Output description. Aimed at detecting and describing simple blit
* shaders.
*/
struct lp_tgsi_channel_info output[PIPE_MAX_SHADER_OUTPUTS][4];
/*
* Shortcut pointers into the above (for fragment shaders).
*/
const struct lp_tgsi_channel_info *cbuf[PIPE_MAX_COLOR_BUFS];
};
/**
* Sampler code generation interface.
*
* Although texture sampling is a requirement for TGSI translation, it is
* a very different problem with several different approaches to it. This
* structure establishes an interface for texture sampling code generation, so
* that we can easily use different texture sampling strategies.
*/
struct lp_build_sampler_soa
{
void
(*destroy)( struct lp_build_sampler_soa *sampler );
void
(*emit_fetch_texel)( const struct lp_build_sampler_soa *sampler,
struct gallivm_state *gallivm,
struct lp_type type,
unsigned unit,
unsigned num_coords,
const LLVMValueRef *coords,
const LLVMValueRef *ddx,
const LLVMValueRef *ddy,
LLVMValueRef lod_bias, /* optional */
LLVMValueRef explicit_lod, /* optional */
LLVMValueRef *texel);
};
struct lp_build_sampler_aos
{
LLVMValueRef
(*emit_fetch_texel)( struct lp_build_sampler_aos *sampler,
struct lp_build_context *bld,
unsigned target, /* TGSI_TEXTURE_* */
unsigned unit,
LLVMValueRef coords,
LLVMValueRef ddx,
LLVMValueRef ddy,
enum lp_build_tex_modifier modifier);
};
void
lp_build_tgsi_info(const struct tgsi_token *tokens,
struct lp_tgsi_info *info);
void
lp_build_tgsi_soa(struct gallivm_state *gallivm,
const struct tgsi_token *tokens,
struct lp_type type,
struct lp_build_mask_context *mask,
LLVMValueRef consts_ptr,
LLVMValueRef system_values_array,
const LLVMValueRef *pos,
const LLVMValueRef (*inputs)[4],
LLVMValueRef (*outputs)[4],
struct lp_build_sampler_soa *sampler,
const struct tgsi_shader_info *info);
void
lp_build_tgsi_aos(struct gallivm_state *gallivm,
const struct tgsi_token *tokens,
struct lp_type type,
const unsigned char swizzles[4],
LLVMValueRef consts_ptr,
const LLVMValueRef *inputs,
LLVMValueRef *outputs,
struct lp_build_sampler_aos *sampler,
const struct tgsi_shader_info *info);
LLVMValueRef
lp_build_system_values_array(struct gallivm_state *gallivm,
const struct tgsi_shader_info *info,
LLVMValueRef instance_id,
LLVMValueRef facing);
#endif /* LP_BLD_TGSI_H */
|
