e5a5c78045
This allows to rasterize a single primitive instead of two, and avoid trashing the cache between the 2 triangles drawing.
25 lines
704 B
GLSL
25 lines
704 B
GLSL
uniform sampler2D tex;
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uniform vec2 pixel;
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// Gaussian separated blur with radius 6.
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out vec4 FragColor;
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void main()
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{
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vec2 uv = gl_FragCoord.xy * pixel;
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vec4 sum = vec4(0.0);
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float X = uv.x;
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float Y = uv.y;
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sum += texture(tex, vec2(X, Y - 5.13333 * pixel.y)) * 0.00640869;
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sum += texture(tex, vec2(X, Y - 3.26667 * pixel.y)) * 0.083313;
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sum += texture(tex, vec2(X, Y - 1.4 * pixel.y)) * 0.305481;
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sum += texture(tex, vec2(X, Y)) * 0.209473;
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sum += texture(tex, vec2(X, Y + 1.4 * pixel.y)) * 0.305481;
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sum += texture(tex, vec2(X, Y + 3.26667 * pixel.y)) * 0.083313;
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sum += texture(tex, vec2(X, Y + 5.13333 * pixel.y)) * 0.00640869;
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FragColor = sum;
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}
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