All shaders now import the GLSLCompat.glsllibnative-compilation-test
Nehon
8 years ago
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12a2f0f63c
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d537a1c22e
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#import "Common/ShaderLib/MultiSample.glsllib" |
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uniform COLORTEXTURE m_Texture; |
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uniform float m_SampleDist; |
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uniform float m_SampleStrength; |
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uniform float m_Samples[10]; |
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in vec2 texCoord; |
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out vec4 outFragColor; |
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void main(void) |
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{ |
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// some sample positions |
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//float samples[10] = float[](-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08); |
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// 0.5,0.5 is the center of the screen |
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// so substracting texCoord from it will result in |
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// a vector pointing to the middle of the screen |
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vec2 dir = 0.5 - texCoord; |
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// calculate the distance to the center of the screen |
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float dist = sqrt(dir.x*dir.x + dir.y*dir.y); |
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// normalize the direction (reuse the distance) |
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dir = dir/dist; |
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// this is the original colour of this fragment |
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// using only this would result in a nonblurred version |
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vec4 colorRes = getColor(m_Texture,texCoord); |
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vec4 sum = colorRes; |
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// take 10 additional blur samples in the direction towards |
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// the center of the screen |
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for (int i = 0; i < 10; i++){ |
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sum += getColor( m_Texture, texCoord + dir * m_Samples[i] * m_SampleDist ); |
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} |
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// we have taken eleven samples |
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sum *= 1.0/11.0; |
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// weighten the blur effect with the distance to the |
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// center of the screen ( further out is blurred more) |
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float t = dist * m_SampleStrength; |
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t = clamp( t ,0.0,1.0); //0 <= t <= 1 |
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//Blend the original color with the averaged pixels |
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outFragColor =mix( colorRes, sum, t ); |
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} |
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