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
|
/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul 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 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.
*/
/**
* \file prog_parameter.c
* Program parameter lists and functions.
* \author Brian Paul
*/
#ifndef PROG_PARAMETER_H
#define PROG_PARAMETER_H
#include "main/mtypes.h"
#include "prog_statevars.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* Actual data for constant values of parameters.
*/
typedef union gl_constant_value
{
GLfloat f;
GLint b;
GLint i;
GLuint u;
} gl_constant_value;
/**
* Program parameter.
* Used by shaders/programs for uniforms, constants, varying vars, etc.
*/
struct gl_program_parameter
{
const char *Name; /**< Null-terminated string */
gl_register_file Type; /**< PROGRAM_CONSTANT or STATE_VAR */
GLenum DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
/**
* Number of components (1..4), or more.
* If the number of components is greater than 4,
* this parameter is part of a larger uniform like a GLSL matrix or array.
* The next program parameter's Size will be Size-4 of this parameter.
*/
GLuint Size;
GLboolean Initialized; /**< debug: Has the ParameterValue[] been set? */
/**
* A sequence of STATE_* tokens and integers to identify GL state.
*/
gl_state_index StateIndexes[STATE_LENGTH];
};
/**
* List of gl_program_parameter instances.
*/
struct gl_program_parameter_list
{
GLuint Size; /**< allocated size of Parameters, ParameterValues */
GLuint NumParameters; /**< number of parameters in arrays */
struct gl_program_parameter *Parameters; /**< Array [Size] */
gl_constant_value (*ParameterValues)[4]; /**< Array [Size] of constant[4] */
GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes
might invalidate ParameterValues[] */
};
extern struct gl_program_parameter_list *
_mesa_new_parameter_list(void);
extern struct gl_program_parameter_list *
_mesa_new_parameter_list_sized(unsigned size);
extern void
_mesa_free_parameter_list(struct gl_program_parameter_list *paramList);
extern struct gl_program_parameter_list *
_mesa_clone_parameter_list(const struct gl_program_parameter_list *list);
extern struct gl_program_parameter_list *
_mesa_combine_parameter_lists(const struct gl_program_parameter_list *a,
const struct gl_program_parameter_list *b);
static inline GLuint
_mesa_num_parameters(const struct gl_program_parameter_list *list)
{
return list ? list->NumParameters : 0;
}
extern void
_mesa_reserve_parameter_storage(struct gl_program_parameter_list *paramList,
unsigned reserve_slots);
extern GLint
_mesa_add_parameter(struct gl_program_parameter_list *paramList,
gl_register_file type, const char *name,
GLuint size, GLenum datatype,
const gl_constant_value *values,
const gl_state_index state[STATE_LENGTH]);
extern GLint
_mesa_add_typed_unnamed_constant(struct gl_program_parameter_list *paramList,
const gl_constant_value values[4], GLuint size,
GLenum datatype, GLuint *swizzleOut);
extern GLint
_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
const gl_constant_value values[4], GLuint size,
GLuint *swizzleOut);
extern GLint
_mesa_add_state_reference(struct gl_program_parameter_list *paramList,
const gl_state_index stateTokens[STATE_LENGTH]);
extern GLint
_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
GLsizei nameLen, const char *name);
extern GLboolean
_mesa_lookup_parameter_constant(const struct gl_program_parameter_list *list,
const gl_constant_value v[], GLuint vSize,
GLint *posOut, GLuint *swizzleOut);
#ifdef __cplusplus
}
#endif
#endif /* PROG_PARAMETER_H */
|
