Module: Mesa
Branch: master
Commit: 5150d56ec43e3081a8a2e114d2ff7be347749c4b
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=5150d56ec43e3081a8a2e114d2ff7be347749c4b

Author: Miklós Máté <[email protected]>
Date:   Wed Dec 16 00:05:40 2015 +0100

program: fix comment about the fog formula

Reviewed-by: Ian Romanick <[email protected]>

---

 src/mesa/program/prog_statevars.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/program/prog_statevars.c 
b/src/mesa/program/prog_statevars.c
index bdb335e..12490d0 100644
--- a/src/mesa/program/prog_statevars.c
+++ b/src/mesa/program/prog_statevars.c
@@ -474,7 +474,7 @@ _mesa_fetch_state(struct gl_context *ctx, const 
gl_state_index state[],
           * single MAD.
           * linear: fogcoord * -1/(end-start) + end/(end-start)
           * exp: 2^-(density/ln(2) * fogcoord)
-          * exp2: 2^-((density/(ln(2)^2) * fogcoord)^2)
+          * exp2: 2^-((density/(sqrt(ln(2))) * fogcoord)^2)
           */
          value[0] = (ctx->Fog.End == ctx->Fog.Start)
             ? 1.0f : (GLfloat)(-1.0F / (ctx->Fog.End - ctx->Fog.Start));

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