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| author | Brian Paul <brianp@vmware.com> | 2009-12-03 11:39:40 -0700 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-12-03 11:39:40 -0700 |
| commit | e01fa1eaec34675d0b30127de4f78b020a092a83 (patch) | |
| tree | 88913185d1a1616a467a00120b29605be41c8207 | |
| parent | 866e6856d39efe9b1ec739587f420a640ad8618e (diff) | |
llvmpipe: comments
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_logic.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_logic.c b/src/gallium/drivers/llvmpipe/lp_bld_logic.c index db22a8028a..9470f834fc 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_logic.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_logic.c @@ -41,6 +41,10 @@ #include "lp_bld_logic.h" +/** + * Build code to compare two values 'a' and 'b' using the given func. + * \parm func one of PIPE_FUNC_x + */ LLVMValueRef lp_build_cmp(struct lp_build_context *bld, unsigned func, @@ -56,6 +60,9 @@ lp_build_cmp(struct lp_build_context *bld, LLVMValueRef res; unsigned i; + assert(func >= PIPE_FUNC_NEVER); + assert(func <= PIPE_FUNC_ALWAYS); + if(func == PIPE_FUNC_NEVER) return zeros; if(func == PIPE_FUNC_ALWAYS) @@ -68,6 +75,7 @@ lp_build_cmp(struct lp_build_context *bld, #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64) if(type.width * type.length == 128) { if(type.floating && util_cpu_caps.has_sse) { + /* float[4] comparison */ LLVMValueRef args[3]; unsigned cc; boolean swap; @@ -117,6 +125,7 @@ lp_build_cmp(struct lp_build_context *bld, return res; } else if(util_cpu_caps.has_sse2) { + /* int[4] comparison */ static const struct { unsigned swap:1; unsigned eq:1; |