2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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26 * \file prog_parameter.c
27 * Program parameter lists and functions.
31 #ifndef PROG_PARAMETER_H
32 #define PROG_PARAMETER_H
36 #include "prog_statevars.h"
45 * Names of the various vertex/fragment program register files, etc.
47 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
48 * All values should fit in a 4-bit field.
50 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
51 * considered to be "uniform" variables since they can only be set outside
52 * glBegin/End. They're also all stored in the same Parameters array.
56 PROGRAM_TEMPORARY
, /**< machine->Temporary[] */
57 PROGRAM_ARRAY
, /**< Arrays & Matrixes */
58 PROGRAM_INPUT
, /**< machine->Inputs[] */
59 PROGRAM_OUTPUT
, /**< machine->Outputs[] */
60 PROGRAM_STATE_VAR
, /**< gl_program->Parameters[] */
61 PROGRAM_CONSTANT
, /**< gl_program->Parameters[] */
62 PROGRAM_UNIFORM
, /**< gl_program->Parameters[] */
63 PROGRAM_WRITE_ONLY
, /**< A dummy, write-only register */
64 PROGRAM_ADDRESS
, /**< machine->AddressReg */
65 PROGRAM_SAMPLER
, /**< for shader samplers, compile-time only */
66 PROGRAM_SYSTEM_VALUE
,/**< InstanceId, PrimitiveID, etc. */
67 PROGRAM_UNDEFINED
, /**< Invalid/TBD value */
68 PROGRAM_IMMEDIATE
, /**< Immediate value, used by TGSI */
69 PROGRAM_BUFFER
, /**< for shader buffers, compile-time only */
70 PROGRAM_MEMORY
, /**< for shared, global and local memory */
71 PROGRAM_IMAGE
, /**< for shader images, compile-time only */
72 PROGRAM_HW_ATOMIC
, /**< for hw atomic counters, compile-time only */
78 * Actual data for constant values of parameters.
80 typedef union gl_constant_value
91 * Used by shaders/programs for uniforms, constants, varying vars, etc.
93 struct gl_program_parameter
95 const char *Name
; /**< Null-terminated string */
96 gl_register_file Type
:5; /**< PROGRAM_CONSTANT or STATE_VAR */
99 * We need to keep track of whether the param is padded for use in the
104 GLenum16 DataType
; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
107 * Number of components (1..4), or more.
108 * If the number of components is greater than 4,
109 * this parameter is part of a larger uniform like a GLSL matrix or array.
110 * The next program parameter's Size will be Size-4 of this parameter.
114 * A sequence of STATE_* tokens and integers to identify GL state.
116 gl_state_index16 StateIndexes
[STATE_LENGTH
];
119 * Index of this parameter's uniform storage.
121 uint32_t UniformStorageIndex
;
124 * Index of the first uniform storage that is associated with the same
125 * variable as this parameter.
127 uint32_t MainUniformStorageIndex
;
132 * List of gl_program_parameter instances.
134 struct gl_program_parameter_list
136 GLuint Size
; /**< allocated size of Parameters, ParameterValues */
137 GLuint NumParameters
; /**< number of used parameters in array */
138 unsigned NumParameterValues
; /**< number of used parameter values array */
139 struct gl_program_parameter
*Parameters
; /**< Array [Size] */
140 unsigned *ParameterValueOffset
;
141 gl_constant_value
*ParameterValues
; /**< Array [Size] of gl_constant_value */
142 GLbitfield StateFlags
; /**< _NEW_* flags indicating which state changes
143 might invalidate ParameterValues[] */
147 extern struct gl_program_parameter_list
*
148 _mesa_new_parameter_list(void);
150 extern struct gl_program_parameter_list
*
151 _mesa_new_parameter_list_sized(unsigned size
);
154 _mesa_free_parameter_list(struct gl_program_parameter_list
*paramList
);
157 _mesa_reserve_parameter_storage(struct gl_program_parameter_list
*paramList
,
158 unsigned reserve_slots
);
161 _mesa_add_parameter(struct gl_program_parameter_list
*paramList
,
162 gl_register_file type
, const char *name
,
163 GLuint size
, GLenum datatype
,
164 const gl_constant_value
*values
,
165 const gl_state_index16 state
[STATE_LENGTH
],
169 _mesa_add_typed_unnamed_constant(struct gl_program_parameter_list
*paramList
,
170 const gl_constant_value values
[4], GLuint size
,
171 GLenum datatype
, GLuint
*swizzleOut
);
174 _mesa_add_unnamed_constant(struct gl_program_parameter_list
*paramList
,
175 const gl_constant_value values
[4], GLuint size
,
178 return _mesa_add_typed_unnamed_constant(paramList
, values
, size
, GL_NONE
,
183 _mesa_add_sized_state_reference(struct gl_program_parameter_list
*paramList
,
184 const gl_state_index16 stateTokens
[STATE_LENGTH
],
185 const unsigned size
, bool pad_and_align
);
188 _mesa_add_state_reference(struct gl_program_parameter_list
*paramList
,
189 const gl_state_index16 stateTokens
[]);
193 _mesa_lookup_parameter_index(const struct gl_program_parameter_list
*paramList
,
199 /* name must be null-terminated */
200 for (GLint i
= 0; i
< (GLint
) paramList
->NumParameters
; i
++) {
201 if (paramList
->Parameters
[i
].Name
&&
202 strcmp(paramList
->Parameters
[i
].Name
, name
) == 0)
210 _mesa_gl_datatype_is_64bit(GLenum datatype
)
218 case GL_DOUBLE_MAT2x3
:
219 case GL_DOUBLE_MAT2x4
:
221 case GL_DOUBLE_MAT3x2
:
222 case GL_DOUBLE_MAT3x4
:
224 case GL_DOUBLE_MAT4x2
:
225 case GL_DOUBLE_MAT4x3
:
227 case GL_INT64_VEC2_ARB
:
228 case GL_INT64_VEC3_ARB
:
229 case GL_INT64_VEC4_ARB
:
230 case GL_UNSIGNED_INT64_ARB
:
231 case GL_UNSIGNED_INT64_VEC2_ARB
:
232 case GL_UNSIGNED_INT64_VEC3_ARB
:
233 case GL_UNSIGNED_INT64_VEC4_ARB
:
244 #endif /* PROG_PARAMETER_H */