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
|
/*
* Cogl
*
* A Low-Level GPU Graphics and Utilities API
*
* Copyright (C) 2009 Intel Corporation.
*
* 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 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 THE AUTHORS OR COPYRIGHT HOLDERS
* 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.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef COGL_BLEND_STRING_H
#define COGL_BLEND_STRING_H
#include <stdlib.h>
#include <glib.h>
typedef enum _CoglBlendStringContext
{
COGL_BLEND_STRING_CONTEXT_BLENDING,
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE
} CoglBlendStringContext;
/* NB: debug stringify code will get upset if these
* are re-ordered */
typedef enum _CoglBlendStringChannelMask
{
COGL_BLEND_STRING_CHANNEL_MASK_RGB,
COGL_BLEND_STRING_CHANNEL_MASK_ALPHA,
COGL_BLEND_STRING_CHANNEL_MASK_RGBA
} CoglBlendStringChannelMask;
typedef enum _CoglBlendStringColorSourceType
{
/* blending */
COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR,
COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR,
/* shared */
COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT,
/* texture combining */
COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE,
COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N,
COGL_BLEND_STRING_COLOR_SOURCE_PRIMARY,
COGL_BLEND_STRING_COLOR_SOURCE_PREVIOUS
} CoglBlendStringColorSourceType;
typedef struct _CoglBlendStringColorSourceInfo
{
CoglBlendStringColorSourceType type;
const char *name;
size_t name_len;
} CoglBlendStringColorSourceInfo;
typedef struct _CoglBlendStringColorSource
{
CoglBool is_zero;
const CoglBlendStringColorSourceInfo *info;
int texture; /* for the TEXTURE_N color source */
CoglBool one_minus;
CoglBlendStringChannelMask mask;
} CoglBlendStringColorSource;
typedef struct _CoglBlendStringFactor
{
CoglBool is_one;
CoglBool is_src_alpha_saturate;
CoglBool is_color;
CoglBlendStringColorSource source;
} CoglBlendStringFactor;
typedef struct _CoglBlendStringArgument
{
CoglBlendStringColorSource source;
CoglBlendStringFactor factor;
} CoglBlendStringArgument;
typedef enum _CoglBlendStringFunctionType
{
/* shared */
COGL_BLEND_STRING_FUNCTION_ADD,
/* texture combine only */
COGL_BLEND_STRING_FUNCTION_REPLACE,
COGL_BLEND_STRING_FUNCTION_MODULATE,
COGL_BLEND_STRING_FUNCTION_ADD_SIGNED,
COGL_BLEND_STRING_FUNCTION_INTERPOLATE,
COGL_BLEND_STRING_FUNCTION_SUBTRACT,
COGL_BLEND_STRING_FUNCTION_DOT3_RGB,
COGL_BLEND_STRING_FUNCTION_DOT3_RGBA
} CoglBlendStringFunctionType;
typedef struct _CoglBlendStringFunctionInfo
{
enum _CoglBlendStringFunctionType type;
const char *name;
size_t name_len;
int argc;
} CoglBlendStringFunctionInfo;
typedef struct _CoglBlendStringStatement
{
CoglBlendStringChannelMask mask;
const CoglBlendStringFunctionInfo *function;
CoglBlendStringArgument args[3];
} CoglBlendStringStatement;
CoglBool
_cogl_blend_string_compile (const char *string,
CoglBlendStringContext context,
CoglBlendStringStatement *statements,
CoglError **error);
void
_cogl_blend_string_split_rgba_statement (CoglBlendStringStatement *statement,
CoglBlendStringStatement *rgb,
CoglBlendStringStatement *a);
#endif /* COGL_BLEND_STRING_H */
|
