DarthAffe/ScreenCapture.NET
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Added check to downscale limit and automatically reduced it if the captured region is not big enough to scale down that much (could cause crashed)

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This commit is contained in:
Darth Affe 2023-08-24 22:27:23 +02:00
parent 8d0a5f65be
commit bd0d49f774
1 changed files with 10 additions and 4 deletions
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14
ScreenCapture.NET/DirectX/DX11ScreenCapture.cs
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@ -300,7 +300,7 @@ public sealed class DX11ScreenCapture : IScreenCapture
int unscaledWidth = width;
int unscaledHeight = height;
(width, height) = CalculateScaledSize(unscaledWidth, unscaledHeight, downscaleLevel);
(width, height, downscaleLevel) = CalculateScaledSize(unscaledWidth, unscaledHeight, downscaleLevel);
byte[] buffer = new byte[width * height * BPP];
@ -354,7 +354,7 @@ public sealed class DX11ScreenCapture : IScreenCapture
//TODO DarthAffe 01.05.2022: For now just reinitialize the zone in that case, but this could be optimized to only recreate the textures needed.
if ((width != null) || (height != null) || (downscaleLevel != null))
{
(int newWidth, int newHeight) = CalculateScaledSize(newUnscaledWidth, newUnscaledHeight, newDownscaleLevel);
(int newWidth, int newHeight, newDownscaleLevel) = CalculateScaledSize(newUnscaledWidth, newUnscaledHeight, newDownscaleLevel);
lock (_captureZones)
{
UnregisterCaptureZone(captureZone);
@ -371,11 +371,17 @@ public sealed class DX11ScreenCapture : IScreenCapture
}
}
private (int width, int height) CalculateScaledSize(int width, int height, int downscaleLevel)
private (int width, int height, int downscaleLevel) CalculateScaledSize(int width, int height, int downscaleLevel)
{
if (downscaleLevel > 0)
for (int i = 0; i < downscaleLevel; i++)
{
if ((width <= 1) && (height <= 1))
{
downscaleLevel = i;
break;
}
width /= 2;
height /= 2;
}
@ -383,7 +389,7 @@ public sealed class DX11ScreenCapture : IScreenCapture
if (width < 1) width = 1;
if (height < 1) height = 1;
return (width, height);
return (width, height, downscaleLevel);
}
private void ValidateCaptureZoneAndThrow(int x, int y, int width, int height)