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GLES: Prevent writing to gutter in readback.

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This also read outside the conv buffer.

Prevents crash on startup for Brave Story.  Now, it just has major
graphical issues.
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Unknown W. Brackets 2018-01-18 21:45:26 -08:00 • committed by Henrik Rydgård
parent 5798c0cc73
commit e98f265d68
1 changed files with 2 additions and 1 deletions
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3
ext/native/thin3d/GLQueueRunner.cpp
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@ -949,9 +949,10 @@ void GLQueueRunner::PerformBindFramebufferAsRenderTarget(const GLRStep &pass) {
void GLQueueRunner::CopyReadbackBuffer(int width, int height, Draw::DataFormat srcFormat, Draw::DataFormat destFormat, int pixelStride, uint8_t *pixels) {
// TODO: Maybe move data format conversion here, and always read back 8888. Drivers
// don't usually provide very optimized conversion implementations, though some do.
// Just need to be careful about dithering, which may break Danganronpa.
int bpp = (int)Draw::DataFormatSizeInBytes(destFormat);
for (int y = 0; y < height; y++) {
memcpy(pixels + y * pixelStride * bpp, readbackBuffer_ + y * width * bpp, pixelStride * bpp);
memcpy(pixels + y * pixelStride * bpp, readbackBuffer_ + y * width * bpp, width * bpp);
}
}