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Another fix for flipbook to work with all cases

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#3381
This commit is contained in:
Wojtek Figat
2025-04-16 10:01:23 +02:00
parent c9e625a1a0
commit 9dba7caa88
1 changed files with 5 additions and 4 deletions
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9
Source/Shaders/MaterialCommon.hlsl
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@@ -309,10 +309,11 @@ float3 AOMultiBounce(float visibility, float3 albedo)
float2 Flipbook(float2 uv, float frame, float2 sizeXY, float2 flipXY = 0.0f)
{
float2 frameXY = float2((uint)frame / (uint)sizeXY.y, (uint)frame / (uint)sizeXY.x);
float2 flipFrameXY = sizeXY - frameXY - float2(1, 1);
frameXY = lerp(frameXY, flipFrameXY, flipXY);
return (uv + frameXY) / sizeXY;
uint tile = (uint)fmod(frame, sizeXY.x * sizeXY.y);
float2 tileCount = float2(1.0, 1.0) / sizeXY;
float tileY = abs(flipXY.y * sizeXY.y - (floor(tile * tileCount.x) + flipXY.y * 1));
float tileX = abs(flipXY.x * sizeXY.x - ((tile - sizeXY.x * floor(tile * tileCount.x)) + flipXY.x * 1));
return (uv + float2(tileX, tileY)) * tileCount;
}
// Calculates the world-position offset to stabilize tiling (eg. via triplanar mapping) due to Large Worlds view origin offset.