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/*
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 2005 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
* BRIAN PAUL 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.
*/
#if !defined SLANG_ASSEMBLE_CONSTRUCTOR_H
#define SLANG_ASSEMBLE_CONSTRUCTOR_H
#include "slang_assemble.h"
#include "slang_compile.h"
#if defined __cplusplus
extern "C" {
#endif
/*
holds a complete information about vector swizzle - the <swizzle> array contains
vector component sources indices, where 0 is "x", 1 is "y", ...
example: "xwz" --> { 3, { 0, 3, 2, n/u } }
*/
typedef struct slang_swizzle_
{
unsigned int num_components;
unsigned int swizzle[4];
} slang_swizzle;
/*
checks if a field selector is a general swizzle (an r-value swizzle with replicated
components or an l-value swizzle mask) for a vector
returns 1 if this is the case, <swz> is filled with swizzle information
returns 0 otherwise
*/
int _slang_is_swizzle (const char *field, unsigned int rows, slang_swizzle *swz);
/*
checks if a general swizzle is an l-value swizzle - these swizzles do not have
duplicated fields and they are specified in order
returns 1 if this is a swizzle mask
returns 0 otherwise
*/
int _slang_is_swizzle_mask (const slang_swizzle *swz, unsigned int rows);
/*
combines two swizzles to form single swizzle
example: "wzyx.yx" --> "zw"
*/
void _slang_multiply_swizzles (slang_swizzle *, const slang_swizzle *, const slang_swizzle *);
int _slang_assemble_constructor (slang_assembly_file *file, slang_operation *op,
slang_assembly_flow_control *flow, slang_assembly_name_space *space,
slang_assembly_local_info *info);
int _slang_assemble_constructor_from_swizzle (slang_assembly_file *file, const slang_swizzle *swz,
slang_type_specifier *spec, slang_type_specifier *master_spec, slang_assembly_local_info *info);
#ifdef __cplusplus
}
#endif
#endif
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