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/*******************************************************************************************
*
* rPBR [shader] - Background skybox fragment shader
*
* Copyright (c) 2017 Victor Fisac
*
* 19-Jun-2020 - modified by Giuseppe Mastrangelo (@peppemas) - VFlip Support
*
**********************************************************************************************/
#version 110
// Input vertex attributes (from vertex shader)
in vec3 fragPosition;
// Input uniform values
uniform samplerCube environmentMap;
uniform bool vflipped;
// Output fragment color
out vec4 finalColor;
vec4 flipTextureCube(samplerCube sampler, vec3 texCoord) {
return texture(sampler, vec3(texCoord.x,-texCoord.y,texCoord.z));
}
void main()
{
// Fetch color from texture map
vec3 color;
if (vflipped )
color = flipTextureCube(environmentMap, fragPosition).rgb;
else
color = texture(environmentMap, fragPosition).rgb;
// Apply gamma correction
color = color/(color + vec3(1.0));
color = pow(color, vec3(1.0/2.2));
// Calculate final fragment color
finalColor = vec4(color, 1.0);
}
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