Support reducing png bit depth
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@@ -62,10 +62,7 @@ static unsigned char *ConvertBitDepth(unsigned char *src, int srcBitDepth, int d
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for (j = 8 - srcBitDepth; j >= 0; j -= srcBitDepth)
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for (j = 8 - srcBitDepth; j >= 0; j -= srcBitDepth)
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{
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{
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unsigned char pixel = (srcByte >> j) % (1 << srcBitDepth);
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unsigned char pixel = (srcByte >> j) % (1 << destBitDepth);
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if (pixel >= (1 << destBitDepth))
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FATAL_ERROR("Image exceeds the maximum color value for a %ibpp image.\n", destBitDepth);
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*dest |= pixel << destBit;
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*dest |= pixel << destBit;
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destBit -= destBitDepth;
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destBit -= destBitDepth;
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if (destBit < 0)
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if (destBit < 0)
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