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/*
** Copyright (c) 2012 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are 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 Materials.
**
** THE MATERIALS ARE 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
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
attribute vec4 gtf_Vertex;
uniform mat4 gtf_ModelViewProjectionMatrix;
varying vec4 color;
// Function declarations.
ivec4 function(inout ivec4 par[10]);
bool is_all(const in ivec4 par, const in int value);
bool is_all(const in ivec4 array[10], const in ivec4 value);
void set_all(out ivec4 array[10], const in ivec4 value);
void main (void)
{
ivec4 par[10];
ivec4 ret = ivec4(0, 0, 0, 0);
float gray = 0.0;
// Initialize the entire array to 1.
set_all(par, ivec4(1, 1, 1, 1));
ret = function(par);
// The parameter should be changed by the function and the function should return 1.
if(is_all(par, ivec4(0, 0, 0, 0)) && is_all(ret, 1))
{
gray = 1.0;
}
color = vec4(gray, gray, gray, 1.0);
gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}
// Function definitions.
ivec4 function(inout ivec4 par[10])
{
// Return the value of the array.
if(is_all(par, ivec4(1, 1, 1, 1)))
{
// Test parameter qualifier (default is "in").
set_all(par, ivec4(0, 0, 0, 0));
return ivec4(1, 1, 1, 1);
}
else
return ivec4(0, 0, 0, 0);
}
bool is_all(const in ivec4 par, const in int value)
{
bool ret = true;
if(par[0] != value)
ret = false;
if(par[1] != value)
ret = false;
if(par[2] != value)
ret = false;
if(par[3] != value)
ret = false;
return ret;
}
bool is_all(const in ivec4 array[10], const in ivec4 value)
{
bool ret = true;
if(array[0] != value)
ret = false;
if(array[1] != value)
ret = false;
if(array[2] != value)
ret = false;
if(array[3] != value)
ret = false;
if(array[4] != value)
ret = false;
if(array[5] != value)
ret = false;
if(array[6] != value)
ret = false;
if(array[7] != value)
ret = false;
if(array[8] != value)
ret = false;
if(array[9] != value)
ret = false;
return ret;
}
void set_all(out ivec4 array[10], const in ivec4 value)
{
array[0] = value;
array[1] = value;
array[2] = value;
array[3] = value;
array[4] = value;
array[5] = value;
array[6] = value;
array[7] = value;
array[8] = value;
array[9] = value;
}
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