From d1baa05439c7157eeca42ec191d5375821725bdd Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Tue, 6 Feb 2001 04:06:34 +0000
Subject: Use a lookup table to compute exponents in tnl fogging code. 
 Slightly clean up the shine table lookup macro.

---
 src/mesa/main/light.h | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

(limited to 'src/mesa/main/light.h')

diff --git a/src/mesa/main/light.h b/src/mesa/main/light.h
index f737abf4e4..b39aa002d8 100644
--- a/src/mesa/main/light.h
+++ b/src/mesa/main/light.h
@@ -1,4 +1,4 @@
-/* $Id: light.h,v 1.8 2000/12/26 05:09:29 keithw Exp $ */
+/* $Id: light.h,v 1.9 2001/02/06 04:06:35 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -82,13 +82,12 @@ _mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params );
 #define GET_SHINE_TAB_ENTRY( table, dp, result )			\
 do {									\
    struct gl_shine_tab *_tab = table;					\
-   if (dp>1.0)								\
+   float f = (dp * (SHINE_TABLE_SIZE-1));				\
+   int k = (int) f;							\
+   if (k > SHINE_TABLE_SIZE-2) 						\
       result = pow( dp, _tab->shininess );				\
-   else {								\
-      float f = (dp * (SHINE_TABLE_SIZE-1));				\
-      int k = (int) f;							\
+   else									\
       result = _tab->tab[k] + (f-k)*(_tab->tab[k+1]-_tab->tab[k]);	\
-   }									\
 } while (0)
 
 
-- 
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