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load this one bmp irc sent me

This commit is contained in:
Adam D. Ruppe 2025-09-15 09:21:48 -04:00
parent 32d96ae4e1
commit f4eb75a1d9
1 changed files with 9 additions and 1 deletions
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bmp.d
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@ -421,10 +421,18 @@ MemoryImage readBmpIndirect(scope void delegate(void*, size_t) fread, bool lookF
return img;
} else {
if (compression != 0) throw new Exception("invalid bitmap compression");
if (compression != 0 && compression != 3) throw new Exception("unsupported bitmap compression");
// true color image
auto img = new TrueColorImage(width, height);
if(compression == 3)
foreach(idx; 0 .. 3) {
// so tbh I don't know what this actually is, it looks like an rgb mask, but why is it here?
// is this common or just the one file i happen to have?
// is there some header byte im missing?
read4();
}
// no palette, so straight into the data
int offsetStart = width * height * 4;
int bytesPerPixel = 4;