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/*
* 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 <stdbool.h>
#include <stdint.h>
#include "prog_statevars.h"
#include <string.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Names of the various vertex/fragment program register files, etc.
*
* NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
* All values should fit in a 4-bit field.
*
* NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
* considered to be "uniform" variables since they can only be set outside
* glBegin/End. They're also all stored in the same Parameters array.
*/
typedef enum
{
PROGRAM_TEMPORARY, /**< machine->Temporary[] */
PROGRAM_ARRAY, /**< Arrays & Matrixes */
PROGRAM_INPUT, /**< machine->Inputs[] */
PROGRAM_OUTPUT, /**< machine->Outputs[] */
PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
PROGRAM_ADDRESS, /**< machine->AddressReg */
PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */
PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
PROGRAM_UNDEFINED, /**< Invalid/TBD value */
PROGRAM_IMMEDIATE, /**< Immediate value, used by TGSI */
PROGRAM_BUFFER, /**< for shader buffers, compile-time only */
PROGRAM_MEMORY, /**< for shared, global and local memory */
PROGRAM_IMAGE, /**< for shader images, compile-time only */
PROGRAM_HW_ATOMIC, /**< for hw atomic counters, compile-time only */
PROGRAM_FILE_MAX
} gl_register_file;
/**
* 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:5; /**< PROGRAM_CONSTANT or STATE_VAR */
/**
* We need to keep track of whether the param is padded for use in the
* shader cache.
*/
bool Padded:1;
GLenum16 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.
*/
GLushort Size;
/**
* A sequence of STATE_* tokens and integers to identify GL state.
*/
gl_state_index16 StateIndexes[STATE_LENGTH];
/**
* Index of this parameter's uniform storage.
*/
uint32_t UniformStorageIndex;
/**
* Index of the first uniform storage that is associated with the same
* variable as this parameter.
*/
uint32_t MainUniformStorageIndex;
};
/**
* List of gl_program_parameter instances.
*/
struct gl_program_parameter_list
{
GLuint Size; /**< allocated size of Parameters, ParameterValues */
GLuint NumParameters; /**< number of used parameters in array */
unsigned NumParameterValues; /**< number of used parameter values array */
struct gl_program_parameter *Parameters; /**< Array [Size] */
unsigned *ParameterValueOffset;
gl_constant_value *ParameterValues; /**< Array [Size] of gl_constant_value */
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 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_index16 state[STATE_LENGTH],
bool pad_and_align);
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);
static inline GLint
_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
const gl_constant_value values[4], GLuint size,
GLuint *swizzleOut)
{
return _mesa_add_typed_unnamed_constant(paramList, values, size, GL_NONE,
swizzleOut);
}
extern GLint
_mesa_add_sized_state_reference(struct gl_program_parameter_list *paramList,
const gl_state_index16 stateTokens[STATE_LENGTH],
const unsigned size, bool pad_and_align);
extern GLint
_mesa_add_state_reference(struct gl_program_parameter_list *paramList,
const gl_state_index16 stateTokens[]);
static inline GLint
_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
const char *name)
{
if (!paramList)
return -1;
/* name must be null-terminated */
for (GLint i = 0; i < (GLint) paramList->NumParameters; i++) {
if (paramList->Parameters[i].Name &&
strcmp(paramList->Parameters[i].Name, name) == 0)
return i;
}
return -1;
}
static inline bool
_mesa_gl_datatype_is_64bit(GLenum datatype)
{
switch (datatype) {
case GL_DOUBLE:
case GL_DOUBLE_VEC2:
case GL_DOUBLE_VEC3:
case GL_DOUBLE_VEC4:
case GL_DOUBLE_MAT2:
case GL_DOUBLE_MAT2x3:
case GL_DOUBLE_MAT2x4:
case GL_DOUBLE_MAT3:
case GL_DOUBLE_MAT3x2:
case GL_DOUBLE_MAT3x4:
case GL_DOUBLE_MAT4:
case GL_DOUBLE_MAT4x2:
case GL_DOUBLE_MAT4x3:
case GL_INT64_ARB:
case GL_INT64_VEC2_ARB:
case GL_INT64_VEC3_ARB:
case GL_INT64_VEC4_ARB:
case GL_UNSIGNED_INT64_ARB:
case GL_UNSIGNED_INT64_VEC2_ARB:
case GL_UNSIGNED_INT64_VEC3_ARB:
case GL_UNSIGNED_INT64_VEC4_ARB:
return true;
default:
return false;
}
}
#ifdef __cplusplus
}
#endif
#endif /* PROG_PARAMETER_H */