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authorZack Rusin <zack@tungstengraphics.com>2007-10-30 07:16:22 -0400
committerZack Rusin <zack@tungstengraphics.com>2007-10-30 07:16:22 -0400
commitdfd774318d1549c1e52364870a2c16a220dcd64c (patch)
treecb5bdb984f838fd998879b92c0464119c4099d7d /src/mesa/pipe/llvm/llvm_builtins.c
parenta01341a762baf7d5e18bd1a55950da7958958927 (diff)
Export true C based builtins to a file of its own.
Diffstat (limited to 'src/mesa/pipe/llvm/llvm_builtins.c')
-rw-r--r--src/mesa/pipe/llvm/llvm_builtins.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/mesa/pipe/llvm/llvm_builtins.c b/src/mesa/pipe/llvm/llvm_builtins.c
new file mode 100644
index 0000000000..9d3d6141a6
--- /dev/null
+++ b/src/mesa/pipe/llvm/llvm_builtins.c
@@ -0,0 +1,59 @@
+/*clang --emit-llvm llvm_builtins.c |llvm-as|opt -std-compile-opts|llvm2cpp -gen-contents -o=gallivm_builtins.cpp -f -for=shader -funcname=createGallivmBuiltins*/
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Zack Rusin zack@tungstengraphics.com
+ */
+typedef __attribute__(( ocu_vector_type(4) )) float float4;
+
+
+extern float powf(float a, float b);
+
+inline float approx(float a, float b)
+{
+ if (b < -128.0f) b = -128.0f;
+ if (b > 128.0f) b = 128.0f;
+ if (a < 0) a = 0;
+ return powf(a, b);
+}
+
+float4 lit(float4 tmp)
+{
+ float4 result;
+ result.x = 1.0;
+ result.w = 1.0;
+ if (tmp.x > 0) {
+ result.y = tmp.x;
+ result.z = approx(tmp.y, tmp.w);
+ } else {
+ result.y = 0;
+ result.z = 0;
+ }
+ return result;
+}