[Bug 95466] SSAO doesn't work as expected in Supertuxkart

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95466

--- Comment #4 from Deve <deveee at gmail.com> ---
I was able to make it working properly by this patch:

diff --git a/data/shaders/ssao.frag b/data/shaders/ssao.frag
index 641e3f9..91e528b 100644
--- a/data/shaders/ssao.frag
+++ b/data/shaders/ssao.frag
@@ -40,7 +40,7 @@ void main(void)
     float bl = 0.0;
     float m = log2(r) + 6 + log2(invSamples);

-    float theta = 2. * 3.14 * tau * .5 * invSamples + phi;
+    float theta = radians(mod(degrees(2. * 3.14 * tau * .5 * invSamples +
phi), 360.));
     vec2 rotations = vec2(cos(theta), sin(theta)) * screen;
     vec2 offset = vec2(cos(invSamples), sin(invSamples));




It looks that intel drivers doesn't like to have very big cosinus and sinus
angles. I needed to use modulo to make it smaller. Originally the theta value
was something around 10000...

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