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https://github.com/Ttanasart-pt/Pixel-Composer.git
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22 lines
437 B
Text
22 lines
437 B
Text
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//
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// Simple passthrough fragment shader
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//
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varying vec2 v_vTexcoord;
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varying vec4 v_vColour;
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uniform sampler2D map;
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uniform float vMin;
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uniform float vMax;
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float bright(in vec4 col) {
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return dot(col.rgb, vec3(0.2126, 0.7152, 0.0722)) * col.a;
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}
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void main() {
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float b = bright(texture2D( map, v_vTexcoord ));
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if(b > vMin && b <= vMax)
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gl_FragColor = texture2D( gm_BaseTexture, v_vTexcoord );
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else
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gl_FragColor = vec4(0.);
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}
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