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#version 150 core
uniform sampler2D mask;
uniform sampler2D source1;
uniform sampler2D source2;
uniform sampler2D source3;
uniform sampler2D source4;
uniform sampler2D source5;
uniform sampler2D source6;
uniform float lod;
uniform float qt_Opacity;
in vec2 qt_TexCoord0;
out vec4 fragColor;
float weight(float v) {
if (v <= 0.0)
return 1.0;
if (v >= 0.5)
return 0.0;
return 1.0 - v * 2.0;
}
void main() {
vec4 maskColor = texture(mask, qt_TexCoord0);
float l = lod * maskColor.a;
float w1 = weight(abs(l - 0.100));
float w2 = weight(abs(l - 0.300));
float w3 = weight(abs(l - 0.500));
float w4 = weight(abs(l - 0.700));
float w5 = weight(abs(l - 0.900));
float w6 = weight(abs(l - 1.100));
float sum = w1 + w2 + w3 + w4 + w5 + w6;
float weight1 = w1 / sum;
float weight2 = w2 / sum;
float weight3 = w3 / sum;
float weight4 = w4 / sum;
float weight5 = w5 / sum;
float weight6 = w6 / sum;
vec4 sourceColor = texture(source1, qt_TexCoord0) * weight1;
sourceColor += texture(source2, qt_TexCoord0) * weight2;
sourceColor += texture(source3, qt_TexCoord0) * weight3;
sourceColor += texture(source4, qt_TexCoord0) * weight4;
sourceColor += texture(source5, qt_TexCoord0) * weight5;
sourceColor += texture(source6, qt_TexCoord0) * weight6;
fragColor = sourceColor * qt_Opacity;
}
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