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llvmpipe: Use the generic conversion routine for depths.

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This allows for z32f depth format to work correctly.
This commit is contained in:
José Fonseca 2009-11-10 17:52:53 -08:00
parent 14dc02a1b2
commit 1acf7a09e7
1 changed files with 18 additions and 7 deletions
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25
src/gallium/drivers/llvmpipe/lp_state_fs.c
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@ -147,6 +147,20 @@ generate_depth(LLVMBuilderRef builder,
format_desc = util_format_description(key->zsbuf_format);
assert(format_desc);
/*
* Depths are expected to be between 0 and 1, even if they are stored in
* floats. Setting these bits here will ensure that the lp_build_conv() call
* below won't try to unnecessarily clamp the incoming values.
*/
if(src_type.floating) {
src_type.sign = FALSE;
src_type.norm = TRUE;
}
else {
assert(!src_type.sign);
assert(src_type.norm);
}
/* Pick the depth type. */
dst_type = lp_depth_type(format_desc, src_type.width*src_type.length);
@ -154,14 +168,11 @@ generate_depth(LLVMBuilderRef builder,
assert(dst_type.width == src_type.width);
assert(dst_type.length == src_type.length);
#if 1
src = lp_build_clamped_float_to_unsigned_norm(builder,
src_type,
dst_type.width,
src);
#else
lp_build_conv(builder, src_type, dst_type, &src, 1, &src, 1);
#endif
dst_ptr = LLVMBuildBitCast(builder,
dst_ptr,
LLVMPointerType(lp_build_vec_type(dst_type), 0), "");
lp_build_depth_test(builder,
&key->depth,