29 lines
766 B
V Shell
29 lines
766 B
V Shell
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#version 120
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varying vec2 texcoord;
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varying vec4 color;
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uniform mat4 gbufferModelView, gbufferModelViewInverse;
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uniform float viewWidth, viewHeight;
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#define pixelSize 2 // [1 2 4 8 16]
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//#define vWarp // whether or not to warp vertices
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void main() {
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texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
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color = gl_Color;
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#ifdef vWarp
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vec2 screen = vec2(viewWidth / pixelSize, viewHeight / pixelSize);
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vec4 position = gbufferModelViewInverse * gl_ModelViewMatrix * gl_Vertex;
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vec2 nearest = round(position.xy * screen) / screen;
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position.xy = nearest;
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//vec3 nearest = round(position.xyz * 100) / 100;
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//position.xyz = nearest;
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gl_Position = gl_ProjectionMatrix * gbufferModelView * position;
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#else
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gl_Position = ftransform();
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#endif
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}
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