Revision 375b3950
Added by Leszek Koltunski about 6 years ago
| src/main/res/raw/blit_depth_render_fragment_shader.glsl | ||
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precision highp float; |
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precision highp int; |
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out vec4 fragColor; |
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in vec2 v_TexCoordinate; |
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out vec4 fragColor; // The output color |
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in vec2 v_TexCoordinate; // Interpolated texture coordinate per fragment. |
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in vec2 v_Pixel; // location of the current fragment, in pixels |
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uniform sampler2D u_DepthTexture; |
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////////////////////////////////////////////////////////////////////////////////////////////// |
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// per-pixel linked list. Order Independent Transparency. |
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uniform vec2 u_Size; |
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layout (std430,binding=1) buffer linkedlist |
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layout (std430,binding=1) buffer linkedlist // first (u_Size.x*u_Size.y) uints - head pointers, |
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{ // one for each pixel in the Output rectangle.
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uint u_Records[]; // |
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}; // Next 3*u_numRecords uints - actual linked list, i.e. |
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// triplets of (pointer,depth,rgba). |
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////////////////////////////////////////////////////////////////////////////////////////////// |
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vec4 convert(uint rgba) |
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{
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uint u_Records[]; |
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}; |
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return vec4( float((rgba>>24u)&255u),float((rgba>>16u)&255u),float((rgba>>8u)&255u),float(rgba&255u) ) / 255.0; |
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} |
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////////////////////////////////////////////////////////////////////////////////////////////// |
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// https://en.wikipedia.org/wiki/Alpha_compositing (premultiplied) |
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vec4 blend(vec4 clr,vec4 srf) |
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{
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return clr + (1.0 - clr.a) * vec4(srf.rgb * srf.a , srf.a); |
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} |
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////////////////////////////////////////////////////////////////////////////////////////////// |
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void main() |
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{
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uint pixelX = uint(v_TexCoordinate.x * u_Size.x); |
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uint pixelY = uint(v_TexCoordinate.y * u_Size.y); |
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uint index = pixelX + pixelY * uint(u_Size.x); |
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uint index = uint(v_Pixel.x + v_Pixel.y * u_Size.x); |
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uint curr = u_Records[index]; |
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if (curr == 0u) discard; |
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vec4 color= vec4(0.0,0.0,0.0,0.0); |
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u_Records[index] = 0u; |
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uint ptr = u_Records[index]; |
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uint color = u_Records[ptr]; |
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//u_Records[ptr] = 0u; |
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while (curr > 0u) |
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{
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color= blend( color, convert(u_Records[curr+2u]) ); // keep walking the linked list |
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curr = u_Records[curr]; // and blending the colors in |
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} |
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if( color==index ) fragColor = vec4(0.0,1.0,0.0,1.0);
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else fragColor = vec4(1.0,0.0,0.0,1.0);
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gl_FragDepth = texture(u_DepthTexture, v_TexCoordinate).r;
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fragColor = color;
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} |
Also available in: Unified diff
OIT: something starts working ('Blur' and 'Multiblur' work, 'Triblur' and 'Transparency' do not)