Hi,
I'd expect util_format_get_blocksize to return the
size in bytes needed to store a whole block, not just
a pixel.
In case of DXT1, you get 4 bits per pixel, and trigger
the assertion that bpp must be a multiple of 8.
Christoph
diff --git a/src/gallium/auxiliary/util/u_format.h
b/src/gallium/auxiliary/util/u_format.h
index c344c42..ff5485e 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -213,11 +213,11 @@ util_format_get_blocksizebits(enum pipe_format format)
return 0;
}
- return desc->block.bits / (desc->block.width * desc->block.height);
+ return desc->block.bits;
}
/**
- * Return bytes per pixel for the given format.
+ * Return bytes per block (not pixel) for the given format.
*/
static INLINE uint
util_format_get_blocksize(enum pipe_format format)
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