diff options
author | Paul Lemire <paul.lemire@kdab.com> | 2015-12-08 09:01:15 +0100 |
---|---|---|
committer | Sean Harmer <sean.harmer@kdab.com> | 2016-01-14 21:36:00 +0000 |
commit | 4a44b6520ff8add3dd65be6224fd7410e5405939 (patch) | |
tree | 13a5a4a3df1cc3f7059afc7f8f55286f434f26e6 /examples/qt3d/compute-particles/particles.frag | |
parent | 08ad89dde168476c8e7045b84785f26eb8c8bc7a (diff) |
Add a compute shader example
Change-Id: I956b647e2218ad3e604bd9e8260b3ea0a90dc84e
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Diffstat (limited to 'examples/qt3d/compute-particles/particles.frag')
-rw-r--r-- | examples/qt3d/compute-particles/particles.frag | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/examples/qt3d/compute-particles/particles.frag b/examples/qt3d/compute-particles/particles.frag new file mode 100644 index 000000000..3f11b9868 --- /dev/null +++ b/examples/qt3d/compute-particles/particles.frag @@ -0,0 +1,33 @@ +#version 430 core + +out vec4 color; + +in VertexBlock +{ + flat vec3 color; + vec3 pos; + vec3 normal; +} frag_in; + +const vec4 lightPosition = vec4(0.0, 0.0, 0.0, 0.0); +const vec3 lightIntensity = vec3(1.0, 1.0, 1.0); +const vec3 ka = vec3(0.1, 0.1, 0.1); +const vec3 ks = vec3(0.8, 0.8, 0.8); +const float shininess = 50.0; + +vec3 ads() +{ + vec3 n = normalize( frag_in.normal); + vec3 s = normalize( vec3(lightPosition) - frag_in.pos ); + vec3 v = normalize( -frag_in.pos ); + vec3 h = normalize( v + s ); + return lightIntensity * (ka + + frag_in.color * max( dot(s, frag_in.normal ), 0.0 ) + + ks * pow( max( dot( h, n ), 0.0 ), shininess ) ); +} + + +void main(void) +{ + color = vec4(ads(), 1.0); +} |