a05ad98896
The uniforms textureWidth and textureHeight were only needed for normal windows. For everything else it was just 1.0/1.0, that is normalized. The makeArrays method is changed to produce normalized texcoords obsoleting the need for these uniforms. So two uniforms less, one calculation in vertex shaders less and many many lines of code removed. At the same time makeArrays is also adjusted to take care of yInverted of the texture, which is needed as we no longer can use the enableUnnormalizedTexCoords which did the yInverted transformation. REVIEW: 101646
27 lines
614 B
GLSL
27 lines
614 B
GLSL
uniform sampler2D sampler;
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uniform vec4 modulation;
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uniform float saturation;
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uniform int u_forceAlpha;
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varying vec2 varyingTexCoords;
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void main()
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{
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vec4 tex = texture2D(sampler, varyingTexCoords);
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if (u_forceAlpha > 0) {
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tex.a = 1.0;
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}
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if (saturation != 1.0) {
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vec3 desaturated = tex.rgb * vec3( 0.30, 0.59, 0.11 );
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desaturated = vec3( dot( desaturated, tex.rgb ));
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tex.rgb = tex.rgb * vec3( saturation ) + desaturated * vec3( 1.0 - saturation );
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}
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tex *= modulation;
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tex.rgb = vec3(1.0) - tex.rgb;
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tex.rgb *= tex.a;
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gl_FragColor = tex;
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}
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