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authorRoland Scheidegger <sroland@tungstengraphics.com>2007-02-09 00:36:40 +0100
committerRoland Scheidegger <sroland@tungstengraphics.com>2007-02-09 00:36:40 +0100
commit54dac2c84310536cce962101de29546d3eb80175 (patch)
tree79b90717b3361af9e0148279db56551e51b5dbbf /src/mesa/main
parent6cf892eeb6edd69d4ba77d4ececa21a09ba317c4 (diff)
optimize generated vertex programs a bit
Use new internal state to avoid per-vertex normalization of static spot direction vector. Use internal state for simpler per-vertex fog computations (MAD instead of SUB/MUL for linear fog, EX2 instead of POW for EXP/EXP2 fog). Simplify point size calc (2 MADs instead of MOV, MUL, MUL, DP3), and while there fix it up (RSQ instead of RCP). All untested...
Diffstat (limited to 'src/mesa/main')
-rw-r--r--src/mesa/main/imports.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index d9885dbeec..0633b3b8bf 100644
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -138,6 +138,14 @@ typedef union { GLfloat f; GLint i; } fi_type;
#define M_E (2.7182818284590452354)
#endif
+#ifndef ONE_DIV_LN2
+#define ONE_DIV_LN2 (1.442695040888963456)
+#endif
+
+#ifndef ONE_DIV_SQRT_LN2
+#define ONE_DIV_SQRT_LN2 (1.201122408786449815)
+#endif
+
#ifndef FLT_MAX_EXP
#define FLT_MAX_EXP 128
#endif