Clément Foucault
0961ce04cb
This changes to premultiplied blending for all cases and put the premult in the shader.
33 lines
636 B
GLSL
33 lines
636 B
GLSL
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uniform sampler2D imgTexture;
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uniform bool imgPremultiplied;
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uniform bool imgAlphaBlend;
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uniform vec4 color;
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in vec2 uvs;
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out vec4 fragColor;
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void main()
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{
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vec2 uvs_clamped = clamp(uvs, 0.0, 1.0);
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vec4 tex_color;
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tex_color = texture_read_as_linearrgb(imgTexture, imgPremultiplied, uvs_clamped);
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fragColor = tex_color * color;
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if (!imgAlphaBlend) {
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/* Arbitrary discard anything below 5% opacity.
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* Note that this could be exposed to the User. */
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if (tex_color.a < 0.05) {
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discard;
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}
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else {
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fragColor.a = 1.0;
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}
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}
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/* Pre-multiplied blending. */
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fragColor.rgb *= fragColor.a;
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}
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