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avoid SetData when premultiplying texture with no semi-transparency

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Jesse Plamondon-Willard 2022-02-22 17:38:59 -05:00
parent 3c29ae6a1e
commit 6fc3be52bc
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GPG Key ID: CF8B1456B3E29F49
1 changed files with 7 additions and 3 deletions
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8
src/SMAPI/Framework/ContentManagers/ModContentManager.cs
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@ -252,16 +252,20 @@ namespace StardewModdingAPI.Framework.ContentManagers
// premultiply pixels // premultiply pixels
Color[] data = new Color[texture.Width * texture.Height]; Color[] data = new Color[texture.Width * texture.Height];
texture.GetData(data); texture.GetData(data);
bool changed = false;
for (int i = 0; i < data.Length; i++) for (int i = 0; i < data.Length; i++)
{ {
var pixel = data[i]; Color pixel = data[i];
if (pixel.A == byte.MinValue || pixel.A == byte.MaxValue) if (pixel.A is (byte.MinValue or byte.MaxValue))
continue; // no need to change fully transparent/opaque pixels continue; // no need to change fully transparent/opaque pixels
data[i] = new Color(pixel.R * pixel.A / byte.MaxValue, pixel.G * pixel.A / byte.MaxValue, pixel.B * pixel.A / byte.MaxValue, pixel.A); // slower version: Color.FromNonPremultiplied(data[i].ToVector4()) data[i] = new Color(pixel.R * pixel.A / byte.MaxValue, pixel.G * pixel.A / byte.MaxValue, pixel.B * pixel.A / byte.MaxValue, pixel.A); // slower version: Color.FromNonPremultiplied(data[i].ToVector4())
changed = true;
} }
if (changed)
texture.SetData(data); texture.SetData(data);
return texture; return texture;
} }