materials are now created by specifying shaders

shader uniforms are added to materials

skybox.frag

@@ -5,9 +5,16 @@ in vec3 texCoords;
 layout (location = 0) out vec4 FragColor;
 layout (location = 1) out vec4 BrightColor;
 
-uniform samplerCube skybox;
+struct Texture{
+	float mixRatio;
+	samplerCube pastTexture, nextTexture;
+	bool animated;
+};
+
+uniform Texture tex;
 
 void main(){
 	BrightColor = vec4(0);
-	FragColor = texture(skybox, texCoords);	
+	//vec4 texColor = (tex.animated ? mix(tex.pastTexture, tex.nextTexture, tex.mixRatio) : tex.nextTexture);
+	FragColor = texture(tex.pastTexture, texCoords);	
 }