ShuriZma
/
dolphin
mirror of https://github.com/dolphin-emu/dolphin.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PostProcessing: fix lens distortion shader for HLSL

This commit is contained in:
Tillmann Karras 2021-07-18 22:48:13 +01:00
parent 6e7698a354
commit 2344624b08
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Data/Sys/Shaders/lens_distortion.glsl
View File

@ -63,7 +63,7 @@ void main()
} }
// convert coordinates to NDC space // convert coordinates to NDC space
float2 fragPos = (GetCoordinates() - 0.5f - vec2(offsetAdd, 0.0f)) * 2.0f; float2 fragPos = (GetCoordinates() - 0.5f - float2(offsetAdd, 0.0f)) * 2.0f;
// Calculate the source location "radius" (distance from the centre of the viewport) // Calculate the source location "radius" (distance from the centre of the viewport)
float destR = length(fragPos); float destR = length(fragPos);
@ -72,16 +72,16 @@ void main()
float srcR = destR * sizeAdjust + ( ka * pow(destR, 2.0) + kb * pow(destR, 4.0)); float srcR = destR * sizeAdjust + ( ka * pow(destR, 2.0) + kb * pow(destR, 4.0));
// Calculate the source vector (radial) // Calculate the source vector (radial)
vec2 correctedRadial = normalize(fragPos) * srcR; float2 correctedRadial = normalize(fragPos) * srcR;
// fix aspect ratio // fix aspect ratio
vec2 widenedRadial = correctedRadial * vec2(aspectAdjustment, 1.0f); float2 widenedRadial = correctedRadial * float2(aspectAdjustment, 1.0f);
// Transform the coordinates (from [-1,1]^2 to [0, 1]^2) // Transform the coordinates (from [-1,1]^2 to [0, 1]^2)
vec2 uv = (widenedRadial/2.0f) + vec2(0.5f) + vec2(offsetAdd, 0.0f); float2 uv = (widenedRadial/2.0f) + float2(0.5f, 0.5f) + float2(offsetAdd, 0.0f);
// Sample the texture at the source location // Sample the texture at the source location
if(clamp(uv, 0.0, 1.0) != uv) if(any(clamp(uv, 0.0, 1.0) != uv))
{ {
// black if beyond bounds // black if beyond bounds
SetOutput(float4(0.0, 0.0, 0.0, 0.0)); SetOutput(float4(0.0, 0.0, 0.0, 0.0));