94 lines
2.7 KiB
GLSL
94 lines
2.7 KiB
GLSL
#[compute]
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#version 450
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layout( local_size_x = 8, local_size_y = 8, local_size_z = 1 ) in;
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layout( rgba16f, set = 0, binding = 0 )
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uniform image2D color_image;
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layout( set = 1, binding = 0 )
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uniform sampler2D depth_sampler;
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layout( push_constant, std430 )
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uniform Params
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{
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vec2 rasterSize;
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vec2 amounts;
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float effectStrength;
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float edgeThreshold;
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float edgeIntensity;
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float contrastThreshold;
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float contrastIntensity;
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float debugView;
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} params;
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float sampleDepth( ivec2 coord )
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{
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coord = clamp( coord, ivec2( 0 ), ivec2( params.rasterSize ) - ivec2( 1 ) );
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vec2 uv = ( vec2( coord ) + 0.5 ) / params.rasterSize;
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return texture( depth_sampler, uv ).r;
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}
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void main( )
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{
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ivec2 uv = ivec2( gl_GlobalInvocationID.xy );
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ivec2 size = ivec2( params.rasterSize );
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if ( uv.x >= size.x || uv.y >= size.y )
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{
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return;
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}
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float centerDepth = sampleDepth( uv );
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float top_left = sampleDepth( uv + ivec2( -1, -1 ) );
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float top = sampleDepth( uv + ivec2( 0, -1 ) );
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float top_right = sampleDepth( uv + ivec2( 1, -1 ) );
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float left = sampleDepth( uv + ivec2( -1, 0 ) );
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float right = sampleDepth( uv + ivec2( 1, 0 ) );
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float bottom_left = sampleDepth( uv + ivec2( -1, 1 ) );
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float bottom = sampleDepth( uv + ivec2( 0, 1 ) );
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float bottom_right = sampleDepth( uv + ivec2( 1, 1 ) );
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float gx = -top_left - 2.0 * left - bottom_left + top_right + 2.0 * right + bottom_right;
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float gy = -top_left - 2.0 * top - top_right + bottom_left + 2.0 * bottom + bottom_right;
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float edgeStrength = length( vec2( gx, gy ) );
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// float edgeStrength = abs( left - right );
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edgeStrength = clamp( ( edgeStrength - params.edgeThreshold ) * params.edgeIntensity, 0.0, 1.0 );
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float edge = edgeStrength;
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vec4 color = imageLoad( color_image, uv );
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vec4 color_left = imageLoad( color_image, uv + ivec2( -1, 0 ) );
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vec4 color_left2 = imageLoad( color_image, uv + ivec2( -2, 0 ) );
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vec4 color_right = imageLoad( color_image, uv + ivec2( 1, 0 ) );
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vec4 color_right2 = imageLoad( color_image, uv + ivec2( 2, 0 ) );
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float c = ( length( color_left - color_right ) - params.contrastThreshold ) * params.contrastIntensity;
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float d = min( 1.0, c );
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edge = max( d, edge );
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vec4 smoothedColor = color_left + color_left2 +
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2.0 * color +
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color_right + color_right2;
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smoothedColor /= 6.0;
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float gray = color.r * 0.2125 + color.g * 0.7154 + color.b * 0.0721;
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vec3 debugViewColor = vec3( params.amounts.x * gray, params.amounts.y * centerDepth, edge );
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color.rgb = mix( color.rgb, smoothedColor.rgb, edge * params.effectStrength );
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color.rgb = mix( color.rgb, debugViewColor, params.debugView );
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imageStore( color_image, uv, color );
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} |