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internal/ui: bug fix: dstRegion should not exceed the image region

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Closes #2577
This commit is contained in:
Hajime Hoshi 2023-02-21 14:15:39 +09:00
parent ad7d5a86f9
commit ea7d007df9
1 changed files with 14 additions and 4 deletions
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18
internal/ui/image.go
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@ -377,10 +377,20 @@ func (i *bigOffscreenImage) drawTriangles(srcs [graphics.ShaderImageCount]*Image
vertices[idx+1] = (vertices[idx+1] - i.region.Y) * bigOffscreenScale vertices[idx+1] = (vertices[idx+1] - i.region.Y) * bigOffscreenScale
} }
dstRegion.X *= bigOffscreenScale x0 := dstRegion.X
dstRegion.Y *= bigOffscreenScale y0 := dstRegion.Y
dstRegion.Width *= bigOffscreenScale x1 := dstRegion.X + dstRegion.Width
dstRegion.Height *= bigOffscreenScale y1 := dstRegion.Y + dstRegion.Height
x0 = max(x0-i.region.X, 0)
y0 = max(y0-i.region.Y, 0)
x1 = min(x1, i.region.X+i.region.Width)
y1 = min(y1, i.region.Y+i.region.Height)
dstRegion = graphicsdriver.Region{
X: x0 * bigOffscreenScale,
Y: y0 * bigOffscreenScale,
Width: (x1 - x0) * bigOffscreenScale,
Height: (y1 - y0) * bigOffscreenScale,
}
i.image.DrawTriangles(srcs, vertices, indices, blend, dstRegion, srcRegion, subimageOffsets, shader, uniforms, evenOdd, canSkipMipmap, false) i.image.DrawTriangles(srcs, vertices, indices, blend, dstRegion, srcRegion, subimageOffsets, shader, uniforms, evenOdd, canSkipMipmap, false)
i.dirty = true i.dirty = true