Mesa (gallium-llvmpipe): llvmpipe: Simpler variant of lp_build_broadcast_scalar.

[Jose Fonseca]

Module: Mesa
Branch: gallium-llvmpipe
Commit: f426fb3704a30abd14764d86fab1cfa157eb4935
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f426fb3704a30abd14764d86fab1cfa157eb4935

Author: José Fonseca <jfonseca at vmware.com>
Date:   Wed Aug 19 17:57:07 2009 +0100

llvmpipe: Simpler variant of lp_build_broadcast_scalar.

---

 src/gallium/drivers/llvmpipe/lp_bld_swizzle.c |   19 +++++++++++++++++++
 src/gallium/drivers/llvmpipe/lp_bld_swizzle.h |    6 ++++++
 2 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c b/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c
index 3402d4f..5204a85 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c
@@ -35,6 +35,25 @@
 
 
 LLVMValueRef
+lp_build_broadcast(LLVMBuilderRef builder,
+                   LLVMTypeRef vec_type,
+                   LLVMValueRef scalar)
+{
+   const unsigned n = LLVMGetVectorSize(vec_type);
+   LLVMValueRef res;
+   unsigned i;
+
+   res = LLVMGetUndef(vec_type);
+   for(i = 0; i < n; ++i) {
+      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+      res = LLVMBuildInsertElement(builder, res, scalar, index, "");
+   }
+
+   return res;
+}
+
+
+LLVMValueRef
 lp_build_broadcast_scalar(struct lp_build_context *bld,
                           LLVMValueRef scalar)
 {
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_swizzle.h b/src/gallium/drivers/llvmpipe/lp_bld_swizzle.h
index ceaaabf..7a4aa88 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_swizzle.h
+++ b/src/gallium/drivers/llvmpipe/lp_bld_swizzle.h
@@ -45,6 +45,12 @@ struct lp_build_context;
 
 
 LLVMValueRef
+lp_build_broadcast(LLVMBuilderRef builder,
+                   LLVMTypeRef vec_type,
+                   LLVMValueRef scalar);
+
+
+LLVMValueRef
 lp_build_broadcast_scalar(struct lp_build_context *bld,
                           LLVMValueRef scalar);