llvmpipe: Scalar -> vector broadcasting.

2009-08-11 13:09:54 +01:00
parent 8422f293ab
commit 4393ca7956
2 changed files with 23 additions and 0 deletions
@@ -33,6 +33,24 @@
 #include "lp_bld_swizzle.h"


+LLVMValueRef
+lp_build_broadcast_scalar(struct lp_build_context *bld,
+                          LLVMValueRef scalar)
+{
+   const union lp_type type = bld->type;
+   LLVMValueRef res;
+   unsigned i;
+
+   res = bld->undef;
+   for(i = 0; i < type.length; ++i) {
+      LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
+      res = LLVMBuildInsertElement(bld->builder, res, scalar, index, "");
+   }
+
+   return res;
+}
+
+
 LLVMValueRef
 lp_build_broadcast_aos(struct lp_build_context *bld,
                       LLVMValueRef a,
@@ -44,6 +44,11 @@ union lp_type type;
 struct lp_build_context;


+LLVMValueRef
+lp_build_broadcast_scalar(struct lp_build_context *bld,
+                          LLVMValueRef scalar);
+
+
 /**
 * Broadcast one channel of a vector composed of arrays of XYZW structures into
 * all four channel.