GoaLitiuM/FlaxEngine
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add support for cascades to DDGI

Browse Source
This commit is contained in:
Wojciech Figat
2022-06-09 08:55:45 +02:00
parent 73d762cf0c
commit 6a74ebd62e
14 changed files with 395 additions and 234 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
Source/Shaders/SSR.hlsl
View File

@@ -6,16 +6,6 @@
#include "./Flax/MonteCarlo.hlsl"
#include "./Flax/GBufferCommon.hlsl"
float max2(float2 v)
{
return max(v.x, v.y);
}
float2 RandN2(float2 pos, float2 random)
{
return frac(sin(dot(pos.xy + random, float2(12.9898, 78.233))) * float2(43758.5453, 28001.8384));
}
// 1:-1 to 0:1
float2 ClipToUv(float2 clipPos)
{
@@ -62,7 +52,7 @@ float3 TraceSceenSpaceReflection(float2 uv, GBufferSample gBuffer, Texture2D dep
float3 normalVS = mul(gBuffer.Normal, (float3x3)viewMatrix);
// Randomize it a little
float2 jitter = RandN2(uv, temporalTime);
float2 jitter = RandN2(uv + temporalTime);
float2 Xi = jitter;
Xi.y = lerp(Xi.y, 0.0, brdfBias);
float3 H = temporal ? TangentToWorld(gBuffer.Normal, ImportanceSampleGGX(Xi, gBuffer.Roughness)) : gBuffer.Normal;
@@ -80,7 +70,8 @@ float3 TraceSceenSpaceReflection(float2 uv, GBufferSample gBuffer, Texture2D dep
float3 endUV = ProjectWorldToUv(startWS + reflectWS, viewProjectionMatrix);
float3 rayUV = endUV - startUV;
rayUV *= stepSize / max2(abs(rayUV.xy));
float2 rayUVAbs = abs(rayUV.xy);
rayUV *= stepSize / max(rayUVAbs.x, rayUVAbs.y);
float3 startUv = startUV + rayUV * 2;
float3 currOffset = startUv;