Implement exponential vertex fog.
Change-Id: I731bb641e00ba9ac880fdb9f721af24906b4850f
Reviewed-on: https://swiftshader-review.googlesource.com/3802
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
diff --git a/src/Renderer/PixelProcessor.cpp b/src/Renderer/PixelProcessor.cpp
index e21cbee..858772a 100644
--- a/src/Renderer/PixelProcessor.cpp
+++ b/src/Renderer/PixelProcessor.cpp
@@ -781,7 +781,7 @@
void PixelProcessor::setFogDensity(float fogDensity)
{
fog.densityE = replicate(-fogDensity * 1.442695f); // 1/e^x = 2^(-x*1.44)
- fog.densityE2 = replicate(fogDensity * 1.201122f); // 1/e^(x^2) = 2^(-(x*1.20)^2)
+ fog.density2E = replicate(-fogDensity * fogDensity * 1.442695f);
}
void PixelProcessor::setPixelFogMode(FogMode fogMode)