94 lines
2.3 KiB
GLSL
94 lines
2.3 KiB
GLSL
#version 150
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#define float2 vec2
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#define float3 vec3
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#define float4 vec4
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uniform Push
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{
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vec4 SourceSize;
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vec4 OriginalSize;
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vec4 OutputSize;
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uint FrameCount;
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float INTERNAL_RES;
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}params;
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#pragma parameterINTERNAL_RES¡1.01.08.01.0
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layout(std140) uniform UBO
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{
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mat4 MVP;
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}global;
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vec3 dt = vec3(1.0, 1.0, 1.0);
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vec3 texture2d_(sampler2D tex, vec2 coord, vec4 yx){
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vec3 s00 = texture(tex, coord + yx . zw). xyz;
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vec3 s20 = texture(tex, coord + yx . xw). xyz;
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vec3 s22 = texture(tex, coord + yx . xy). xyz;
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vec3 s02 = texture(tex, coord + yx . zy). xyz;
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float m1 = dot(abs(s00 - s22), dt)+ 0.001;
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float m2 = dot(abs(s02 - s20), dt)+ 0.001;
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return 0.5 *(m2 *(s00 + s22)+ m1 *(s02 + s20))/(m1 + m2);
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}
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layout(location = 0) in vec2 vTexCoord;
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layout(location = 0) out vec4 FragColor;
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uniform sampler2D Source;
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void main()
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{
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vec2 size = 4.0 * params . SourceSize . xy / params . INTERNAL_RES;
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vec2 inv_size = 1.0 / size;
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vec4 yx = vec4(inv_size, - inv_size);
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vec2 OGL2Pos = vTexCoord * size;
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vec2 fp = fract(OGL2Pos);
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vec2 dx = vec2(inv_size . x, 0.0);
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vec2 dy = vec2(0.0, inv_size . y);
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vec2 g1 = vec2(inv_size . x, inv_size . y);
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vec2 g2 = vec2(- inv_size . x, inv_size . y);
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vec2 pC4 = floor(OGL2Pos)* inv_size;
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vec3 C1 = texture2d_(Source, pC4 - dy, yx);
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vec3 C0 = texture2d_(Source, pC4 - g1, yx);
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vec3 C2 = texture2d_(Source, pC4 - g2, yx);
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vec3 C3 = texture2d_(Source, pC4 - dx, yx);
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vec3 C4 = texture2d_(Source, pC4, yx);
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vec3 C5 = texture2d_(Source, pC4 + dx, yx);
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vec3 C6 = texture2d_(Source, pC4 + g2, yx);
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vec3 C7 = texture2d_(Source, pC4 + dy, yx);
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vec3 C8 = texture2d_(Source, pC4 + g1, yx);
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vec3 ul, ur, dl, dr;
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float m1, m2;
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m1 = dot(abs(C0 - C4), dt)+ 0.001;
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m2 = dot(abs(C1 - C3), dt)+ 0.001;
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ul =(m2 *(C0 + C4)+ m1 *(C1 + C3))/(m1 + m2);
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m1 = dot(abs(C1 - C5), dt)+ 0.001;
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m2 = dot(abs(C2 - C4), dt)+ 0.001;
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ur =(m2 *(C1 + C5)+ m1 *(C2 + C4))/(m1 + m2);
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m1 = dot(abs(C3 - C7), dt)+ 0.001;
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m2 = dot(abs(C6 - C4), dt)+ 0.001;
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dl =(m2 *(C3 + C7)+ m1 *(C6 + C4))/(m1 + m2);
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m1 = dot(abs(C4 - C8), dt)+ 0.001;
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m2 = dot(abs(C5 - C7), dt)+ 0.001;
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dr =(m2 *(C4 + C8)+ m1 *(C5 + C7))/(m1 + m2);
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vec3 c11 = 0.5 *((dr * fp . x + dl *(1 - fp . x))* fp . y +(ur * fp . x + ul *(1 - fp . x))*(1 - fp . y));
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FragColor = vec4(c11, 1.0);
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}
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