2010-03-10 21:58:12 +00:00
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/* -*- c++ -*- */
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2010-02-22 21:19:34 +00:00
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/*
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* Copyright © 2009 Intel Corporation
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* 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 OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#ifndef GLSL_TYPES_H
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#define GLSL_TYPES_H
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2010-03-09 23:17:37 +00:00
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#include <cstring>
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2010-03-26 18:43:36 +00:00
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#include <cassert>
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2010-03-09 23:17:37 +00:00
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2010-02-22 21:19:34 +00:00
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#define GLSL_TYPE_UINT 0
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#define GLSL_TYPE_INT 1
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#define GLSL_TYPE_FLOAT 2
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#define GLSL_TYPE_BOOL 3
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#define GLSL_TYPE_SAMPLER 4
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#define GLSL_TYPE_STRUCT 5
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#define GLSL_TYPE_ARRAY 6
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#define GLSL_TYPE_FUNCTION 7
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#define GLSL_TYPE_VOID 8
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#define GLSL_TYPE_ERROR 9
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2010-03-09 23:17:37 +00:00
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enum glsl_sampler_dim {
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GLSL_SAMPLER_DIM_1D = 0,
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GLSL_SAMPLER_DIM_2D,
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GLSL_SAMPLER_DIM_3D,
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GLSL_SAMPLER_DIM_CUBE,
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GLSL_SAMPLER_DIM_RECT,
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GLSL_SAMPLER_DIM_BUF
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};
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2010-02-22 21:19:34 +00:00
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struct glsl_type {
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unsigned base_type:4;
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unsigned sampler_dimensionality:3;
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unsigned sampler_shadow:1;
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unsigned sampler_array:1;
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unsigned sampler_type:2; /**< Type of data returned using this sampler.
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* only \c GLSL_TYPE_FLOAT, \c GLSL_TYPE_INT,
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* and \c GLSL_TYPE_UINT are valid.
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*/
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2010-03-26 18:43:36 +00:00
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/**
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* \name Vector and matrix element counts
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*
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* For scalars, each of these values will be 1. For non-numeric types
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* these will be 0.
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*/
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/*@{*/
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unsigned vector_elements:3; /**< 1, 2, 3, or 4 vector elements. */
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unsigned matrix_columns:3; /**< 1, 2, 3, or 4 matrix columns. */
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/*@}*/
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2010-02-22 21:19:34 +00:00
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/**
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* Name of the data type
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*
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* This may be \c NULL for anonymous structures, for arrays, or for
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* function types.
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*/
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const char *name;
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/**
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* For \c GLSL_TYPE_ARRAY, this is the length of the array. For
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* \c GLSL_TYPE_STRUCT, it is the number of elements in the structure and
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* the number of values pointed to by \c fields.structure (below).
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*
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* For \c GLSL_TYPE_FUNCTION, it is the number of parameters to the
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* function. The return value from a function is implicitly the first
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* parameter. The types of the parameters are stored in
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* \c fields.parameters (below).
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*/
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unsigned length;
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/**
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* Subtype of composite data types.
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*/
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union {
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const struct glsl_type *array; /**< Type of array elements. */
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const struct glsl_type *parameters; /**< Parameters to function. */
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const struct glsl_struct_field *structure;/**< List of struct fields. */
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} fields;
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2010-03-09 23:17:37 +00:00
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2010-03-26 21:33:41 +00:00
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/**
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* \name Pointers to various public type singletons
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*/
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/*@{*/
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static const glsl_type *const error_type;
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static const glsl_type *const int_type;
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static const glsl_type *const uint_type;
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static const glsl_type *const float_type;
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static const glsl_type *const bool_type;
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/*@}*/
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2010-03-09 23:17:37 +00:00
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glsl_type(unsigned base_type, unsigned vector_elements,
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2010-03-25 20:19:13 +00:00
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unsigned matrix_columns, const char *name) :
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2010-03-09 23:17:37 +00:00
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base_type(base_type),
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sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
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sampler_type(0),
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2010-03-25 20:19:13 +00:00
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vector_elements(vector_elements), matrix_columns(matrix_columns),
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2010-03-09 23:17:37 +00:00
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name(name),
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length(0)
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{
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2010-03-26 18:43:36 +00:00
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/* Neither dimension is zero or both dimensions are zero.
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*/
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assert((vector_elements == 0) == (matrix_columns == 0));
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2010-03-09 23:17:37 +00:00
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memset(& fields, 0, sizeof(fields));
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}
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glsl_type(enum glsl_sampler_dim dim, bool shadow, bool array,
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unsigned type, const char *name) :
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base_type(GLSL_TYPE_SAMPLER),
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sampler_dimensionality(dim), sampler_shadow(shadow),
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sampler_array(array), sampler_type(type),
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2010-03-25 20:19:13 +00:00
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vector_elements(0), matrix_columns(0),
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2010-03-09 23:17:37 +00:00
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name(name),
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length(0)
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{
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memset(& fields, 0, sizeof(fields));
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}
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glsl_type(const glsl_struct_field *fields, unsigned num_fields,
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const char *name) :
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base_type(GLSL_TYPE_STRUCT),
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sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
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sampler_type(0),
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2010-03-25 20:19:13 +00:00
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vector_elements(0), matrix_columns(0),
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2010-03-09 23:17:37 +00:00
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name(name),
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length(num_fields)
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{
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this->fields.structure = fields;
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}
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2010-02-22 21:19:34 +00:00
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2010-03-24 00:31:39 +00:00
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/**
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* For numeric and boolean derrived types returns the basic scalar type
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*
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* If the type is a numeric or boolean scalar, vector, or matrix type,
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* this function gets the scalar type of the individual components. For
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* all other types, including arrays of numeric or boolean types, the
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* error type is returned.
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*/
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const glsl_type *get_base_type() const;
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2010-03-25 00:11:30 +00:00
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/**
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* Get the instance of a built-in scalar, vector, or matrix type
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*/
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static const glsl_type *get_instance(unsigned base_type, unsigned rows,
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unsigned columns);
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2010-03-26 18:13:43 +00:00
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/**
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* Query the total number of scalars that make up a scalar, vector or matrix
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*/
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unsigned components() const
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{
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2010-03-26 18:43:36 +00:00
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return vector_elements * matrix_columns;
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2010-03-26 18:13:43 +00:00
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}
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2010-03-09 23:51:22 +00:00
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/**
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* Query whether or not a type is a scalar (non-vector and non-matrix).
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*/
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bool is_scalar() const
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{
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return (vector_elements == 1)
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2010-03-09 23:51:22 +00:00
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&& (base_type >= GLSL_TYPE_UINT)
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&& (base_type <= GLSL_TYPE_BOOL);
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}
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2010-02-22 21:19:34 +00:00
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2010-03-09 23:55:16 +00:00
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/**
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* Query whether or not a type is a vector
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*/
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bool is_vector() const
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{
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2010-03-26 18:43:36 +00:00
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return (vector_elements > 1)
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&& (matrix_columns == 1)
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2010-03-09 23:55:16 +00:00
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&& (base_type >= GLSL_TYPE_UINT)
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&& (base_type <= GLSL_TYPE_BOOL);
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}
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2010-02-22 21:19:34 +00:00
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2010-03-09 23:58:52 +00:00
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/**
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* Query whether or not a type is a matrix
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*/
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bool is_matrix() const
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{
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/* GLSL only has float matrices. */
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2010-03-26 18:43:36 +00:00
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return (matrix_columns > 1) && (base_type == GLSL_TYPE_FLOAT);
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2010-03-09 23:58:52 +00:00
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}
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2010-03-23 19:28:28 +00:00
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2010-03-24 00:31:03 +00:00
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/**
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* Query whether or not a type is a non-array numeric type
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*/
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bool is_numeric() const
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{
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return (base_type >= GLSL_TYPE_UINT) && (base_type <= GLSL_TYPE_FLOAT);
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}
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2010-03-26 21:38:37 +00:00
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/**
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* Query whether or not a type is an integral type
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*/
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bool is_integer() const
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{
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return (base_type == GLSL_TYPE_UINT) || (base_type == GLSL_TYPE_INT);
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}
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2010-03-30 00:17:15 +01:00
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/**
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* Query whether or not a type is a float type
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*/
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bool is_float() const
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{
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return base_type == GLSL_TYPE_FLOAT;
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}
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2010-03-24 00:31:03 +00:00
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/**
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* Query whether or not a type is a non-array boolean type
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*/
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bool is_boolean() const
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{
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return base_type == GLSL_TYPE_BOOL;
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}
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2010-03-23 22:03:46 +00:00
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/**
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* Query whether or not a type is a sampler
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*/
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bool is_sampler() const
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{
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return base_type == GLSL_TYPE_SAMPLER;
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}
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2010-03-30 00:17:15 +01:00
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/**
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* Query whether or not a type is an array
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*/
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bool is_array() const
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{
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return base_type == GLSL_TYPE_ARRAY;
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}
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2010-03-23 19:28:28 +00:00
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/**
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* Query whether or not a type is the void type singleton.
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*/
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bool is_void() const
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{
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return base_type == GLSL_TYPE_VOID;
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}
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/**
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* Query whether or not a type is the error type singleton.
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*/
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bool is_error() const
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{
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return base_type == GLSL_TYPE_ERROR;
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}
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2010-03-25 00:05:09 +00:00
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2010-03-25 18:42:45 +00:00
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/**
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* Query the full type of a matrix row
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*
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* \return
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2010-03-26 21:33:41 +00:00
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* If the type is not a matrix, \c glsl_type::error_type is returned.
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* Otherwise a type matching the rows of the matrix is returned.
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2010-03-25 18:42:45 +00:00
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*/
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const glsl_type *row_type() const
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{
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return is_matrix()
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2010-03-25 20:19:13 +00:00
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? get_instance(base_type, matrix_columns, 1)
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2010-03-26 21:33:41 +00:00
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: error_type;
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2010-03-25 18:42:45 +00:00
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}
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/**
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* Query the full type of a matrix column
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*
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* \return
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2010-03-26 21:33:41 +00:00
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* If the type is not a matrix, \c glsl_type::error_type is returned.
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* Otherwise a type matching the columns of the matrix is returned.
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2010-03-25 18:42:45 +00:00
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*/
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const glsl_type *column_type() const
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{
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return is_matrix()
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? get_instance(base_type, vector_elements, 1)
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2010-03-26 21:33:41 +00:00
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: error_type;
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2010-03-25 18:42:45 +00:00
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}
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2010-03-25 00:05:09 +00:00
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private:
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/**
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2010-03-26 21:33:41 +00:00
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* \name Pointers to various private type singletons
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2010-03-25 00:05:09 +00:00
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*/
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/*@{*/
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static const glsl_type *const mat2_type;
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static const glsl_type *const mat2x3_type;
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static const glsl_type *const mat2x4_type;
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static const glsl_type *const mat3x2_type;
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static const glsl_type *const mat3_type;
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static const glsl_type *const mat3x4_type;
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static const glsl_type *const mat4x2_type;
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static const glsl_type *const mat4x3_type;
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static const glsl_type *const mat4_type;
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/*@}*/
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2010-03-09 23:58:52 +00:00
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};
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2010-02-22 21:19:34 +00:00
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struct glsl_struct_field {
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const struct glsl_type *type;
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const char *name;
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};
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struct _mesa_glsl_parse_state;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void
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_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state);
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2010-03-25 23:58:45 +00:00
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extern void
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_mesa_glsl_initialize_constructors(struct exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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2010-02-22 21:19:34 +00:00
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#ifdef __cplusplus
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}
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#endif
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#endif /* GLSL_TYPES_H */
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