Fixed coordinate transformation for skybox and reflection objects

Matched HLSL and GLSL shaders
Fixes #757

data/shaders/glsl/texturecubemaparray/reflect.frag

@@ -24,7 +24,7 @@ void main()
 	vec3 cR = reflect (cI, normalize(inNormal));
 
 	cR = vec3(ubo.invModel * vec4(cR, 0.0));
-	cR.y *= -1.0;
+	cR.yz *= -1.0;
 
 	vec4 color = textureLod(samplerCubeMapArray, vec4(cR, ubo.cubeMapIndex), ubo.lodBias);
 

data/shaders/glsl/texturecubemaparray/skybox.vert

@@ -16,5 +16,6 @@ layout (location = 0) out vec3 outUVW;
 void main() 
 {
 	outUVW = inPos;
+	outUVW.yz *= -1.0f;
 	gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
 }