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Support reducing png bit depth

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This commit is contained in:
GriffinR 2023-01-11 10:11:11 -05:00
parent 6d6a876dbd
commit 3ee3d6e346
1 changed files with 1 additions and 4 deletions
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5
tools/gbagfx/convert_png.c
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@ -62,10 +62,7 @@ static unsigned char *ConvertBitDepth(unsigned char *src, int srcBitDepth, int d
for (j = 8 - srcBitDepth; j >= 0; j -= srcBitDepth) for (j = 8 - srcBitDepth; j >= 0; j -= srcBitDepth)
{ {
unsigned char pixel = (srcByte >> j) % (1 << srcBitDepth); unsigned char pixel = (srcByte >> j) % (1 << destBitDepth);
if (pixel >= (1 << destBitDepth))
FATAL_ERROR("Image exceeds the maximum color value for a %ibpp image.\n", destBitDepth);
*dest |= pixel << destBit; *dest |= pixel << destBit;
destBit -= destBitDepth; destBit -= destBitDepth;
if (destBit < 0) if (destBit < 0)