celisej567/Nuake
1
0
Fork 0
mirror of https://github.com/antopilo/Nuake.git synced 2026-01-01 05:48:14 +03:00
Code Issues Packages Projects Releases Wiki Activity

Improved ssao

Browse Source
This commit is contained in:
antopilo
2025-04-13 12:26:08 -04:00
parent 7921723d72
commit dc8d4c54ee
1 changed files with 15 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
Data/Shaders/Vulkan/ssao.frag
View File

@@ -168,14 +168,16 @@ PSOutput main(PSInput input)
}
// Calculate TBN
float3x3 normalMatrix = transpose(Inverse3x3((float3x3)camera.View));
float3x3 normalMatrix = (float3x3)camera.View;
//normalMatrix[0] *= -1.0; // Flip the Z basis vector
float3 normal = SampleTexture(pushConstants.normalTextureID, input.UV).xyz * 2.0 - 1.0;
normal = mul(normalMatrix, normal);
float3 randomVec = SampleTexture(pushConstants.noiseTextureID, input.UV * pushConstants.noiseScale).xyz;
float2 randomVecSample = SampleTexture(pushConstants.noiseTextureID, input.UV * pushConstants.noiseScale).xy * 2.0 - 1.0;
float3 randomVec = float3(randomVecSample.x, -randomVecSample.y, 0);
//randomVec = float3(0, 1, 0);
float3 tangent = normalize(randomVec - normal * dot(randomVec, normal));
float3 bitangent = cross(tangent, normal);
float3 bitangent = cross(normal, tangent);
float3x3 TBN = float3x3(tangent, bitangent, normal);
float3 fragPos = ViewPosFromDepth(depth, input.UV, camera.InverseProjection);
@@ -183,18 +185,22 @@ PSOutput main(PSInput input)
float4 fragWorldPos = mul(camera.InverseView, float4(fragPos, 1.0));
fragWorldPos.xyz /= fragWorldPos.w;
PSOutput output;
float occlusion = 0.0f;
for(int i = 0; i < 64; i++)
{
float3 samplePos = mul(TBN, ssaoKernels[i]);
samplePos = fragWorldPos + samplePos * pushConstants.radius;
float3 samplePos = mul(ssaoKernels[i], TBN);
samplePos = fragPos + samplePos * pushConstants.radius;
//samplePos = fragWorldPos + samplePos * pushConstants.radius;
//return output;
// Fix from: https://github.com/JoeyDeVries/LearnOpenGL/issues/364
float4 worldSamplePos = mul(camera.View, float4(samplePos, 1.0));
worldSamplePos.xyz /= worldSamplePos.w;
samplePos = worldSamplePos.xyz;
//samplePos = worldSamplePos.xyz;
float4 offset = float4(samplePos, 1.0f);
offset = mul(camera.Projection, offset);
offset.xyz /= offset.w;
@@ -208,7 +214,7 @@ PSOutput main(PSInput input)
occlusion = 1.0 - (occlusion / 64.0);
occlusion = pow(occlusion, pushConstants.power);
PSOutput output;
output.oColor0 = float4(occlusion, occlusion, occlusion, 1.0f);
return output;
}