31 lines
665 B
GLSL
31 lines
665 B
GLSL
#version 100
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#ifdef GL_FRAGMENT_PRECISION_HIGH
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precision highp float;
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#else
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precision mediump float;
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#endif
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uniform mat4 view_matrix;
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uniform mat4 world_matrix;
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uniform vec4 mult_color;
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uniform vec4 add_color;
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uniform mat3 u_matrix;
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uniform sampler2D u_texture;
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varying vec2 frag_uv;
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void main() {
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vec4 color = texture2D(u_texture, frag_uv);
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// Unmultiply alpha before apply color transform.
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if( color.a > 0.0 ) {
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color.rgb /= color.a;
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color = clamp(mult_color * color + add_color, 0.0, 1.0);
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float alpha = clamp(color.a, 0.0, 1.0);
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color = vec4(color.rgb * alpha, alpha);
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}
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gl_FragColor = color;
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} |