screen-space-reflections //rectangle="0" mipmapping="bilinear"/> >8U)^x.yzx)*1103515245U; x = ((x>>8U)^x.yzx)*1103515245U; x = ((x>>8U)^x.yzx)*1103515245U; return vec3(x)*(1.0/float(0xffffffffU)); } void main(void) { gl_Position = MVP*vec4(pos, 1.); jit_out.uv = vec2(textureMatrix0*vec4(uv, 1., 1.)).xy; jit_out.normUV = uv; } ]]> >8U)^x.yzx)*1103515245U; x = ((x>>8U)^x.yzx)*1103515245U; x = ((x>>8U)^x.yzx)*1103515245U; return vec3(x)*(1.0/float(0xffffffffU)); } vec2 pos2uv(in vec3 p) { vec4 offset = vec4(p, 1.0); offset = P * offset; offset.xy /= offset.w; offset.xy *= 0.5; offset.xy += 0.5; return (textureMatrix0*vec4(offset.xy, 1., 1.)).xy; } void main(void) { vec3 p = texture(buffer_pos, jit_in.uv).xyz; vec3 n = normalize(texture(buffer_norm, jit_in.uv).xyz); vec3 v = normalize(p); vec4 col = texture(buffer_col, jit_in.uv); //REFLECTIONS vec3 ref = vec3(0.); float stepSize = 8.0; float maxSteps = ref_length; float thickness = 0.25; vec3 r = reflect(v, n); vec3 startPos = p; vec3 endPos = startPos + r; vec2 startFrag = jit_in.uv; vec2 endFrag = pos2uv(endPos); vec2 deltaFrag = endFrag - startFrag; float deltaDepth = endPos.z - startPos.z; vec2 fragDir = deltaFrag / length(deltaFrag); float depthDir = deltaDepth / length(deltaFrag); for(int i = 0; i < ref_iterations; i++){ vec3 jitter = hash(uvec3(jit_in.uv.x*384.7654+170.3432+float(i)*34.291, 20. + float(i) + 1., jit_in.uv.y+385.592832)); vec2 currFragDir = fragDir + (jitter.xy-0.5)*ref_roughness; float currStepSize = stepSize + jitter.z * stepSize * 0.5; vec2 fragStep = currFragDir * currStepSize; float depthStep = depthDir * currStepSize; vec2 currFrag = startFrag + fragStep; float currDepth = startPos.z + depthStep; for(float f = 1; f <= maxSteps; f += 1.0){ float actualDepth = texture(buffer_pos, currFrag).z; if(currFrag.x < 0.0 || currFrag.y < 0.0 || currFrag.x >= texDim.x || currFrag.y >= texDim.y) break; float depthDifference = (actualDepth - currDepth) / thickness; if(actualDepth > currDepth && depthDifference < 1.) { ref += currStepSize * texture(buffer_col, currFrag).rgb * smoothstep(1., 0., f/maxSteps) ; break; } currFrag += fragStep; currDepth += depthStep; } } ref /= float(ref_iterations); float fresnel = 0.1 + 0.9*pow(1. - max(dot(-v, n), 0.), 5.); color.rgb = col.rgb + ref*mix(0., ref_amnt, fresnel); color.a = col.a; } ]]>