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fix: apparently the length of the buffer must be aligned to 4096 bytes as well

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This commit is contained in:
Daniele Cattaneo
2019-06-14 23:56:19 +02:00
parent c559e42b8b
commit 8ba408ea20
1 changed files with 6 additions and 5 deletions
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Source/OEPixelBuffer.m
+6 -5
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@@ -127,15 +127,16 @@ BufferOption BufferOptionMustCopy(BufferOption o) {
_srcBytesPerRow = bytesPerRow;
_sourceSize = CGSizeMake(bytesPerRow / OEMTLPixelFormatToBPP(format), height);
[self setFormat:format];
if ((uintptr_t)pointer % 4096 == 0) {
NSUInteger length = height * bytesPerRow;
if (((uintptr_t)pointer % 4096 == 0) && (length % 4096 == 0)) {
_options |= BufferOptionNoCopy;
_srcBuffer = [_device newBufferWithBytesNoCopy:pointer length:height * bytesPerRow options:MTLResourceStorageModeShared deallocator:nil];
_srcBuffer = [_device newBufferWithBytesNoCopy:pointer length:length options:MTLResourceStorageModeShared deallocator:nil];
} else {
_options &= ~BufferOptionNoCopy;
_buffer = pointer;
_bufferLenBytes = bytesPerRow * height;
_srcBuffer = [_device newBufferWithLength:height * bytesPerRow options:MTLResourceStorageModeShared];
_bufferLenBytes = length;
_srcBuffer = [_device newBufferWithLength:length options:MTLResourceStorageModeShared];
}