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fix: Resolve texture bleeding issue in Texture2D Array mode for Random Row Selection #156

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Merged
CA-Tatami merged 4 commits into from
Jul 23, 2025
Merged

fix: Resolve texture bleeding issue in Texture2D Array mode for Random Row Selection #156

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f66312e
fix: Texture2D Array でのテクスチャブレンディング問題を修正
Jul 23, 2025
049d433
Merge branch 'main' into fix/tatami/random-row-progress
Jul 23, 2025
8a90689
Merge branch 'main' into fix/tatami/random-row-progress
Jul 23, 2025
91b8d5f
リファクタリング
Jul 23, 2025
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16 changes: 9 additions & 7 deletions Assets/Nova/Runtime/Core/Shaders/Particles.hlsl
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Original file line number Diff line number Diff line change
Expand Up @@ -166,15 +166,17 @@ half2 GetFlowMapUvOffset(TEXTURE2D_PARAM(flowMap, sampler_flowMap),
#endif
}

// Returns the progress for flip-book.
// Returns the progress for flip-book (Texture2D Array).
// Returns an integer frame index to prevent texture bleeding.
half FlipBookProgress(in half progress, in half sliceCount)
{
float result = progress;
result = clamp(result, 0, 0.999);
result = frac(result);
result *= sliceCount;
result -= 0.5;
return result;
// Clamp progress to [0, 0.999) range
half clampedProgress = clamp(progress, 0.0, 0.999);

// Calculate frame index and floor to integer
// This prevents texture bleeding in Texture2D Array sampling
half frameIndex = clampedProgress * sliceCount;
return floor(frameIndex);
}

// Returns the progress for flip-book blending.
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