From 194bc5afbde4c6b144289e7542612ef52e0e5bd4 Mon Sep 17 00:00:00 2001
From: Brian <brian@yutani.localnet.net>
Date: Tue, 19 Dec 2006 08:58:56 -0700
Subject: rewrite +=, -= etc for floats

---
 src/mesa/shader/slang/library/slang_core.gc | 36 +++++++++++++++++------------
 1 file changed, 21 insertions(+), 15 deletions(-)

(limited to 'src/mesa/shader/slang/library/slang_core.gc')

diff --git a/src/mesa/shader/slang/library/slang_core.gc b/src/mesa/shader/slang/library/slang_core.gc
index 81be17f9f0..3c4862baa1 100755
--- a/src/mesa/shader/slang/library/slang_core.gc
+++ b/src/mesa/shader/slang/library/slang_core.gc
@@ -326,30 +326,36 @@ mat4 __constructor (const vec4 r0, const vec4 r1, const vec4 r2, const vec4 r3)
 }
 
 
+//// operator +=
 
-
-void __operator += (inout float a, const float b) {
-    __asm float_add a, a, b;
+void __operator += (inout float a, const float b)
+{
+    __asm vec4_add a.x, a, b;
 }
 
-float __operator - (const float a) {
-    float b;
-    __asm float_negate b, a;
-    return b;
+void __operator -= (inout float a, const float b)
+{
+    __asm vec4_subtract a.x, a, b;
 }
 
-void __operator -= (inout float a, const float b) {
-    float c;
-    __asm float_negate c, b;
-    __asm float_add a, a, c;
+void __operator *= (inout float a, const float b)
+{
+    __asm vec4_multiply a.x, a, b;
 }
 
-void __operator *= (inout float a, const float b) {
-    __asm float_multiply a, a, b;
+void __operator /= (inout float a, const float b)
+{
+   float w; // = 1 / b
+   __asm float_rcp w.x, b;
+   __asm vec4_multiply a.x, a, w;
 }
 
-void __operator /= (inout float a, const float b) {
-    __asm float_divide a, a, b;
+
+
+float __operator - (const float a) {
+    float b;
+    __asm float_negate b, a;
+    return b;
 }
 
 float __operator + (const float a, const float b) {
-- 
cgit v1.2.3