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Better ensures frame buffer can be cleared.

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This commit is contained in:
Thomas Harte 2020-12-29 22:26:19 -05:00
parent ee5f45c979
commit 31d68622c8
1 changed files with 4 additions and 1 deletions
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5
OSBindings/Mac/Clock Signal/ScanTarget/CSScanTarget.mm
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@ -410,7 +410,7 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
width:frameBufferWidth
height:frameBufferHeight
mipmapped:NO];
textureDescriptor.usage = MTLTextureUsageRenderTarget | MTLTextureUsageShaderRead;
textureDescriptor.usage = MTLTextureUsageRenderTarget | MTLTextureUsageShaderRead | MTLTextureUsageShaderWrite;
textureDescriptor.resourceOptions = MTLResourceStorageModePrivate;
id<MTLTexture> _oldFrameBuffer = _frameBuffer;
_frameBuffer = [_view.device newTextureWithDescriptor:textureDescriptor];
@ -447,6 +447,9 @@ using BufferingScanTarget = Outputs::Display::BufferingScanTarget;
if(_oldFrameBuffer) {
[self copyTexture:_oldFrameBuffer to:_frameBuffer];
} else {
// TODO: this use of clearTexture is the only reasn _frameBuffer has a marked usage of MTLTextureUsageShaderWrite;
// it'd probably be smarter to blank it with geometry rather than potentially complicating
// its storage further?
[self clearTexture:_frameBuffer];
}