Lucas de Vries
27 lines
851 B
Plaintext
27 lines
851 B
Plaintext
varying vec2 uv[5], uvB;
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const vec2 fractions = vec2(0.984375, 0.0078125);
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uniform vec2 texSize;
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uniform vec2 fullSize;
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varying vec2 blur;
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void main() {
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// make biome tiler
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// to reuse the tiling planet surfaces we need to account for the bleed they have baked into the planet sphere uv's.
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// each planet tile is 2016x2016 with 16 pixel tiled bleed on each side
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uvB = (vec2(gl_Color.x, gl_MultiTexCoord0.y) * fractions.x + fractions.y) / vec2(4.0, 2.0);
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uvB.y = 1.0 - uvB.y;
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// make splatmap blurs
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blur = vec2(1.0 / fullSize.x, 1.0 / fullSize.y);
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uv[0] = gl_MultiTexCoord0.xy;
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uv[1] = uv[0] + blur;
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uv[2] = uv[0] + vec2(-blur.x, blur.y);
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uv[3] = uv[0] + vec2(-blur.x, -blur.y);
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uv[4] = uv[0] + vec2(blur.x, -blur.y);
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gl_Position = ftransform();
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gl_FrontColor = gl_Color;
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gl_BackColor = gl_Color;
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}
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