Resolve "Indirect Dispatch"

Closes #106 (closed)

projects/indirect_dispatch/resources/shaders/gammaCorrection.comp

@@ -17,6 +17,10 @@ void main(){
     vec2    uv          = vec2(coord) / textureRes;
 
     vec3 linearColor    = texture(sampler2D(inTexture, textureSampler), uv).rgb;
+    
+    // in case of motion vector visualisation negative values are possible
+    linearColor         = abs(linearColor); 
+    
     vec3 gammaCorrected = pow(linearColor, vec3(1 / 2.2));
 
     imageStore(outImage, coord, vec4(gammaCorrected, 0.f));