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authorJosé Fonseca <[email protected]>2009-11-10 17:52:53 -0800
committerJosé Fonseca <[email protected]>2009-11-24 14:25:20 +0000
commit2282fb7710d386bd10ccdd18f030069fae0a5d55 (patch)
treecd16234e05d9020ac51b03c3973f412a0fc580ec /src/gallium
parentb375526b50271317868a20484c8a1f36707e6005 (diff)
llvmpipe: Use the generic conversion routine for depths.
This allows for z32f depth format to work correctly.
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_state_fs.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_state_fs.c b/src/gallium/drivers/llvmpipe/lp_state_fs.c
index 2e9aa9fffe3..2bde24430e4 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_fs.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_fs.c
@@ -148,6 +148,20 @@ 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);
@@ -155,14 +169,11 @@ 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,