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Differential D16243 Diff 58431 source/blender/draw/engines/eevee/shaders/effect_reflection_trace_frag.glsl

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source/blender/draw/engines/eevee/shaders/effect_reflection_trace_frag.glsl

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* by Tomasz Stachowiak. * by Tomasz Stachowiak.
* https://www.ea.com/frostbite/news/stochastic-screen-space-reflections * https://www.ea.com/frostbite/news/stochastic-screen-space-reflections
* and * and
* "Stochastic all the things: raytracing in hybrid real-time rendering" * "Stochastic all the things: raytracing in hybrid real-time rendering"
* by Tomasz Stachowiak. * by Tomasz Stachowiak.
* https://media.contentapi.ea.com/content/dam/ea/seed/presentations/dd18-seed-raytracing-in-hybrid-real-time-rendering.pdf * https://media.contentapi.ea.com/content/dam/ea/seed/presentations/dd18-seed-raytracing-in-hybrid-real-time-rendering.pdf
*/ */
uniform sampler2D normalBuffer;
uniform sampler2D specroughBuffer;
uniform vec2 targetSize;
uniform float randomScale;
in vec4 uvcoordsvar;
layout(location = 0) out vec4 hitData;
layout(location = 1) out float hitDepth;
void main() void main()
{ {
vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy); vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy);
/* Decorrelate from AA. */ /* Decorrelate from AA. */
/* TODO(@fclem): we should use a more general approach for more random number dimensions. */ /* TODO(@fclem): we should use a more general approach for more random number dimensions. */
vec2 random_px = floor(fract(rand.xy * 2.2074408460575947536) * 1.99999) - 0.5; vec2 random_px = floor(fract(rand.xy * 2.2074408460575947536) * 1.99999) - 0.5;
rand.xy = fract(rand.xy * 3.2471795724474602596); rand.xy = fract(rand.xy * 3.2471795724474602596);
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