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make motion blur's blur radius consistent across different framerates

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Xonk
2025-04-28 18:46:56 -04:00
parent 3db13c456f
commit 6e824ddd3c
1 changed files with 5 additions and 1 deletions
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6
shaders/dimensions/final.fsh
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@ -14,6 +14,7 @@ varying vec2 texcoord;
uniform vec2 texelSize; uniform vec2 texelSize;
uniform float frameTimeCounter; uniform float frameTimeCounter;
uniform int frameCounter; uniform int frameCounter;
uniform float frameTime;
uniform float viewHeight; uniform float viewHeight;
uniform float viewWidth; uniform float viewWidth;
uniform float aspectRatio; uniform float aspectRatio;
@ -91,7 +92,10 @@ vec3 doMotionBlur(vec2 texcoord, float depth, float noise, bool hand){
vec2 velocity = texcoord - previousPosition.xy; vec2 velocity = texcoord - previousPosition.xy;
// thank you Capt Tatsu for letting me use these // thank you Capt Tatsu for letting me use these
velocity = (velocity / (1.0 + length(velocity)) ) * 0.05 * blurMult * MOTION_BLUR_STRENGTH; velocity /= 1.0 + length(velocity); // ensure the blurring stays sane where UV is beyond 1.0 or -1.0
velocity /= 1.0 + frameTime*1000.0; // ensure the blur radius stays roughly the same no matter the framerate
velocity *= blurMult * MOTION_BLUR_STRENGTH; // remove hand blur and add user control
texcoord = texcoord - velocity*(samples*0.5 + noise); texcoord = texcoord - velocity*(samples*0.5 + noise);
vec2 screenEdges = 2.0/vec2(viewWidth, viewHeight); vec2 screenEdges = 2.0/vec2(viewWidth, viewHeight);