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Fix MakeAlphaTestImage performance issue

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This commit is contained in:
Magnus Norddahl 2020-11-15 03:20:41 +01:00
parent 8b643aef65
commit 49edfed449
1 changed files with 13 additions and 6 deletions
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19
Source/Core/Data/ImageData.cs
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@ -639,7 +639,7 @@ namespace CodeImp.DoomBuilder.Data
loadResult.preview = preview;
}
void MakeAlphaTestImage(LocalLoadResult loadResult)
unsafe void MakeAlphaTestImage(LocalLoadResult loadResult)
{
if (loadResult.bitmap == null)
return;
@ -648,11 +648,16 @@ namespace CodeImp.DoomBuilder.Data
int height = loadResult.bitmap.Height;
loadResult.alphatestWidth = width;
loadResult.alphatestHeight = height;
for (int y = 0; y < height; y++)
BitmapData bmpdata = loadResult.bitmap.LockBits(new Rectangle(0, 0, loadResult.bitmap.Size.Width, loadResult.bitmap.Size.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
PixelColor* pixels = (PixelColor*)(bmpdata.Scan0.ToPointer());
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
PixelColor* line = pixels + y * width;
for (int x = 0; x < width; x++)
{
if (loadResult.bitmap.GetPixel(x, y).A == 0)
if (line[x].a == 0)
{
if (loadResult.alphatest == null)
loadResult.alphatest = new BitArray(width * height, true);
@ -660,9 +665,11 @@ namespace CodeImp.DoomBuilder.Data
}
}
}
}
Texture GetTexture()
loadResult.bitmap.UnlockBits(bmpdata);
}
Texture GetTexture()
{
if (texture != null)
return texture;