diff options
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_state_fs.c | 25 |
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, |