259 lines
7.8 KiB
C
259 lines
7.8 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file prog_parameter.c
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* Program parameter lists and functions.
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* \author Brian Paul
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*/
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#ifndef PROG_PARAMETER_H
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#define PROG_PARAMETER_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "prog_statevars.h"
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Names of the various vertex/fragment program register files, etc.
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*
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* NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
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* All values should fit in a 4-bit field.
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*
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* NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
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* considered to be "uniform" variables since they can only be set outside
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* glBegin/End. They're also all stored in the same Parameters array.
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*/
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typedef enum
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{
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PROGRAM_TEMPORARY, /**< machine->Temporary[] */
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PROGRAM_INPUT, /**< machine->Inputs[] */
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PROGRAM_OUTPUT, /**< machine->Outputs[] */
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PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
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PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
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PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
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PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
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PROGRAM_ADDRESS, /**< machine->AddressReg */
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PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
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PROGRAM_UNDEFINED, /**< Invalid/TBD value */
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PROGRAM_FILE_MAX
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} gl_register_file;
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/**
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* Actual data for constant values of parameters.
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*/
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typedef union gl_constant_value
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{
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GLfloat f;
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GLint b;
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GLint i;
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GLuint u;
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} gl_constant_value;
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/**
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* Program parameter.
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* Used by shaders/programs for uniforms, constants, varying vars, etc.
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*/
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struct gl_program_parameter
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{
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const char *Name; /**< Null-terminated string */
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gl_register_file Type:5; /**< PROGRAM_CONSTANT or STATE_VAR */
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/**
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* We need to keep track of whether the param is padded for use in the
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* shader cache.
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*/
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bool Padded:1;
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GLenum16 DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
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/**
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* Number of components (1..4), or more.
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* If the number of components is greater than 4,
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* this parameter is part of a larger uniform like a GLSL matrix or array.
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*/
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GLushort Size;
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/**
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* A sequence of STATE_* tokens and integers to identify GL state.
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*/
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gl_state_index16 StateIndexes[STATE_LENGTH];
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/**
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* Offset within ParameterValues where this parameter is stored.
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*/
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unsigned ValueOffset;
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/**
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* Index of this parameter's uniform storage.
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*/
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uint32_t UniformStorageIndex;
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/**
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* Index of the first uniform storage that is associated with the same
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* variable as this parameter.
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*/
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uint32_t MainUniformStorageIndex;
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};
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/**
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* List of gl_program_parameter instances.
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*/
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struct gl_program_parameter_list
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{
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unsigned Size; /**< allocated size of Parameters */
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unsigned SizeValues; /**< alllocate size of ParameterValues */
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GLuint NumParameters; /**< number of used parameters in array */
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unsigned NumParameterValues; /**< number of used parameter values array */
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struct gl_program_parameter *Parameters; /**< Array [Size] */
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gl_constant_value *ParameterValues; /**< Array [Size] of gl_constant_value */
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GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes
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might invalidate ParameterValues[] */
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bool DisallowRealloc;
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/* Parameters are optionally sorted as follows. Uniforms and constants
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* are first, then state vars. This should be true in all cases except
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* ir_to_mesa, which adds constants at the end, and ARB_vp with ARL,
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* which can't sort parameters.
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*/
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int UniformBytes;
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int FirstStateVarIndex;
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int LastStateVarIndex;
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};
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extern struct gl_program_parameter_list *
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_mesa_new_parameter_list(void);
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extern struct gl_program_parameter_list *
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_mesa_new_parameter_list_sized(unsigned size);
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extern void
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_mesa_free_parameter_list(struct gl_program_parameter_list *paramList);
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extern void
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_mesa_reserve_parameter_storage(struct gl_program_parameter_list *paramList,
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unsigned reserve_params,
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unsigned reserve_values);
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extern void
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_mesa_disallow_parameter_storage_realloc(struct gl_program_parameter_list *paramList);
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extern GLint
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_mesa_add_parameter(struct gl_program_parameter_list *paramList,
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gl_register_file type, const char *name,
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GLuint size, GLenum datatype,
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const gl_constant_value *values,
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const gl_state_index16 state[STATE_LENGTH],
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bool pad_and_align);
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extern GLint
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_mesa_add_typed_unnamed_constant(struct gl_program_parameter_list *paramList,
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const gl_constant_value *values, GLuint size,
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GLenum datatype, GLuint *swizzleOut);
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static inline GLint
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_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
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const gl_constant_value *values, GLuint size,
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GLuint *swizzleOut)
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{
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return _mesa_add_typed_unnamed_constant(paramList, values, size, GL_NONE,
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swizzleOut);
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}
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extern GLint
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_mesa_add_sized_state_reference(struct gl_program_parameter_list *paramList,
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const gl_state_index16 stateTokens[STATE_LENGTH],
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const unsigned size, bool pad_and_align);
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extern GLint
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_mesa_add_state_reference(struct gl_program_parameter_list *paramList,
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const gl_state_index16 stateTokens[STATE_LENGTH]);
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static inline GLint
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_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
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const char *name)
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{
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if (!paramList)
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return -1;
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/* name must be null-terminated */
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for (GLint i = 0; i < (GLint) paramList->NumParameters; i++) {
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if (paramList->Parameters[i].Name &&
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strcmp(paramList->Parameters[i].Name, name) == 0)
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return i;
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}
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return -1;
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}
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static inline bool
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_mesa_gl_datatype_is_64bit(GLenum datatype)
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{
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switch (datatype) {
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case GL_DOUBLE:
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case GL_DOUBLE_VEC2:
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case GL_DOUBLE_VEC3:
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case GL_DOUBLE_VEC4:
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case GL_DOUBLE_MAT2:
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case GL_DOUBLE_MAT2x3:
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case GL_DOUBLE_MAT2x4:
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case GL_DOUBLE_MAT3:
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case GL_DOUBLE_MAT3x2:
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case GL_DOUBLE_MAT3x4:
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case GL_DOUBLE_MAT4:
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case GL_DOUBLE_MAT4x2:
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case GL_DOUBLE_MAT4x3:
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case GL_INT64_ARB:
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case GL_INT64_VEC2_ARB:
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case GL_INT64_VEC3_ARB:
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case GL_INT64_VEC4_ARB:
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case GL_UNSIGNED_INT64_ARB:
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case GL_UNSIGNED_INT64_VEC2_ARB:
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case GL_UNSIGNED_INT64_VEC3_ARB:
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case GL_UNSIGNED_INT64_VEC4_ARB:
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return true;
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default:
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return false;
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}
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}
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void
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_mesa_recompute_parameter_bounds(struct gl_program_parameter_list *list);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PROG_PARAMETER_H */
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