23 lines
438 B
GLSL
23 lines
438 B
GLSL
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#version 440
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layout( location = 0 ) in vec4 vertexCoord;
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layout( location = 0 ) out float colorIndex;
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layout( std140, binding = 0 ) uniform buf
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{
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mat4 matrix;
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vec4 rect;
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float opacity;
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} ubuf;
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out gl_PerVertex { vec4 gl_Position; };
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void main()
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{
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vec2 l = vertexCoord.xy - ubuf.rect.xy;
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vec2 size = ubuf.rect.zw;
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colorIndex = dot( l, size ) / dot( size, size );
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gl_Position = ubuf.matrix * vertexCoord;
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}
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