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Add smoothBlend functionality to crispBlend for transparent textures

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fixes water opacity in default texture pack
This commit is contained in:
Toru the Red Fox 2026-03-10 11:46:35 +00:00 committed by GitHub
parent d7596aa28c
commit 2c09288202
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GPG key ID: B5690EEEBB952194
1 changed files with 37 additions and 28 deletions
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65
Minecraft.Client/Texture.cpp
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@ -716,38 +716,47 @@ int Texture::crispBlend(int c0, int c1)
int a0 = static_cast<int>(((c0 & 0xff000000) >> 24)) & 0xff;
int a1 = static_cast<int>(((c1 & 0xff000000) >> 24)) & 0xff;
int a = 255;
if (a0 + a1 < 255)
// continue with crisp blend if it's likely to be an opaque/cutout tile in the atlas
if (a0 >= 0xfa || a1 >= 0xfa)
{
a = 0;
a0 = 1;
a1 = 1;
int a = 255;
if (a0 + a1 < 255)
{
a = 0;
a0 = 1;
a1 = 1;
}
else if (a0 > a1)
{
a0 = 255;
a1 = 1;
}
else
{
a0 = 1;
a1 = 255;
}
int r0 = ((c0 >> 16) & 0xff) * a0;
int g0 = ((c0 >> 8) & 0xff) * a0;
int b0 = ((c0) & 0xff) * a0;
int r1 = ((c1 >> 16) & 0xff) * a1;
int g1 = ((c1 >> 8) & 0xff) * a1;
int b1 = ((c1) & 0xff) * a1;
int r = (r0 + r1) / (a0 + a1);
int g = (g0 + g1) / (a0 + a1);
int b = (b0 + b1) / (a0 + a1);
return (a << 24) | (r << 16) | (g << 8) | b;
}
else if (a0 > a1)
else // smoothblend if it's transparent
{
a0 = 255;
a1 = 1;
return (((a0 + a1) >> 1) << 24) | (((c0 & 0xfefefe) + (c1 & 0xfefefe)) >> 1);
}
else
{
a0 = 1;
a1 = 255;
}
int r0 = ((c0 >> 16) & 0xff) * a0;
int g0 = ((c0 >> 8) & 0xff) * a0;
int b0 = ((c0) & 0xff) * a0;
int r1 = ((c1 >> 16) & 0xff) * a1;
int g1 = ((c1 >> 8) & 0xff) * a1;
int b1 = ((c1) & 0xff) * a1;
int r = (r0 + r1) / (a0 + a1);
int g = (g0 + g1) / (a0 + a1);
int b = (b0 + b1) / (a0 + a1);
return (a << 24) | (r << 16) | (g << 8) | b;
}
int Texture::getManagerId()