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Allow block transfers from 0 that are too tall.

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Hopefully this is safe.
This commit is contained in:
Unknown W. Brackets 2015-02-28 01:28:53 -08:00
parent 7379d37e73
commit b25c2de369
1 changed files with 4 additions and 1 deletions
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5
GPU/Common/FramebufferCommon.cpp
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@ -683,9 +683,12 @@ bool FramebufferManagerCommon::NotifyBlockTransferBefore(u32 dstBasePtr, int dst
if (g_Config.bBlockTransferGPU && !srcBuffer->memoryUpdated) {
const int srcBpp = srcBuffer->format == GE_FORMAT_8888 ? 4 : 2;
const float srcXFactor = (float)bpp / srcBpp;
if (srcHeight <= 0 || srcY + srcHeight > srcBuffer->bufferHeight) {
const bool tooTall = srcY + srcHeight > srcBuffer->bufferHeight;
if (srcHeight <= 0 || (tooTall && srcY != 0)) {
WARN_LOG_ONCE(btdheight, G3D, "Block transfer download %08x -> %08x skipped, %d+%d is taller than %d", srcBasePtr, dstBasePtr, srcY, srcHeight, srcBuffer->bufferHeight);
} else {
if (tooTall)
WARN_LOG_ONCE(btdheight, G3D, "Block transfer download %08x -> %08x dangerous, %d+%d is taller than %d", srcBasePtr, dstBasePtr, srcY, srcHeight, srcBuffer->bufferHeight);
ReadFramebufferToMemory(srcBuffer, true, static_cast<int>(srcX * srcXFactor), srcY, static_cast<int>(srcWidth * srcXFactor), srcHeight);
}
}