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
|
/*
* Copyright 2003 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, sublicense, 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 NONINFRINGEMENT.
* 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.
*/
#include "main/glheader.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/enums.h"
#include "main/colormac.h"
#include "main/dd.h"
#include "intel_screen.h"
#include "brw_context.h"
#include "brw_defines.h"
int
intel_translate_shadow_compare_func(GLenum func)
{
/* GL specifies the result of shadow comparisons as:
* 1 if ref <op> texel,
* 0 otherwise.
*
* The hardware does:
* 0 if texel <op> ref,
* 1 otherwise.
*
* So, these look a bit strange because there's both a negation
* and swapping of the arguments involved.
*/
switch (func) {
case GL_NEVER:
return BRW_COMPAREFUNCTION_ALWAYS;
case GL_LESS:
return BRW_COMPAREFUNCTION_LEQUAL;
case GL_LEQUAL:
return BRW_COMPAREFUNCTION_LESS;
case GL_GREATER:
return BRW_COMPAREFUNCTION_GEQUAL;
case GL_GEQUAL:
return BRW_COMPAREFUNCTION_GREATER;
case GL_NOTEQUAL:
return BRW_COMPAREFUNCTION_EQUAL;
case GL_EQUAL:
return BRW_COMPAREFUNCTION_NOTEQUAL;
case GL_ALWAYS:
return BRW_COMPAREFUNCTION_NEVER;
}
unreachable("Invalid shadow comparison function.");
}
int
intel_translate_compare_func(GLenum func)
{
switch (func) {
case GL_NEVER:
return BRW_COMPAREFUNCTION_NEVER;
case GL_LESS:
return BRW_COMPAREFUNCTION_LESS;
case GL_LEQUAL:
return BRW_COMPAREFUNCTION_LEQUAL;
case GL_GREATER:
return BRW_COMPAREFUNCTION_GREATER;
case GL_GEQUAL:
return BRW_COMPAREFUNCTION_GEQUAL;
case GL_NOTEQUAL:
return BRW_COMPAREFUNCTION_NOTEQUAL;
case GL_EQUAL:
return BRW_COMPAREFUNCTION_EQUAL;
case GL_ALWAYS:
return BRW_COMPAREFUNCTION_ALWAYS;
}
unreachable("Invalid comparison function.");
}
int
intel_translate_stencil_op(GLenum op)
{
switch (op) {
case GL_KEEP:
return BRW_STENCILOP_KEEP;
case GL_ZERO:
return BRW_STENCILOP_ZERO;
case GL_REPLACE:
return BRW_STENCILOP_REPLACE;
case GL_INCR:
return BRW_STENCILOP_INCRSAT;
case GL_DECR:
return BRW_STENCILOP_DECRSAT;
case GL_INCR_WRAP:
return BRW_STENCILOP_INCR;
case GL_DECR_WRAP:
return BRW_STENCILOP_DECR;
case GL_INVERT:
return BRW_STENCILOP_INVERT;
default:
return BRW_STENCILOP_ZERO;
}
}
int
intel_translate_logic_op(GLenum opcode)
{
switch (opcode) {
case GL_CLEAR:
return BRW_LOGICOPFUNCTION_CLEAR;
case GL_AND:
return BRW_LOGICOPFUNCTION_AND;
case GL_AND_REVERSE:
return BRW_LOGICOPFUNCTION_AND_REVERSE;
case GL_COPY:
return BRW_LOGICOPFUNCTION_COPY;
case GL_COPY_INVERTED:
return BRW_LOGICOPFUNCTION_COPY_INVERTED;
case GL_AND_INVERTED:
return BRW_LOGICOPFUNCTION_AND_INVERTED;
case GL_NOOP:
return BRW_LOGICOPFUNCTION_NOOP;
case GL_XOR:
return BRW_LOGICOPFUNCTION_XOR;
case GL_OR:
return BRW_LOGICOPFUNCTION_OR;
case GL_OR_INVERTED:
return BRW_LOGICOPFUNCTION_OR_INVERTED;
case GL_NOR:
return BRW_LOGICOPFUNCTION_NOR;
case GL_EQUIV:
return BRW_LOGICOPFUNCTION_EQUIV;
case GL_INVERT:
return BRW_LOGICOPFUNCTION_INVERT;
case GL_OR_REVERSE:
return BRW_LOGICOPFUNCTION_OR_REVERSE;
case GL_NAND:
return BRW_LOGICOPFUNCTION_NAND;
case GL_SET:
return BRW_LOGICOPFUNCTION_SET;
default:
return BRW_LOGICOPFUNCTION_SET;
}
}
|
