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r300g: do not use fastfill with 16-bit zbuffers

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To my knowledge, there is no way to flush zmask and thus write the clear
value.

This fixes zbuffer reads, among other things.
This commit is contained in:
Marek Olšák 2010-08-19 22:18:40 +02:00
parent 076c53879b
commit 06991d87be
1 changed files with 4 additions and 0 deletions
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4
src/gallium/drivers/r300/r300_hyperz.c
View file

@ -357,6 +357,10 @@ void r300_zmask_alloc_block(struct r300_context *r300, struct r300_surface *surf
tex->desc.b.b.target != PIPE_TEXTURE_2D)
return;
/* Cannot flush zmask of 16-bit zbuffers. */
if (util_format_get_blocksizebits(tex->desc.b.b.format) == 16)
return;
if (tex->zmask_mem[level])
return;