First commit

res/shaders/main.frag

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+#version 330
+
+in vec4 color;
+in vec3 normal;
+in vec2 out_coord_texture;
+uniform sampler2D myTexture;
+
+uniform vec3 light_direction;
+uniform vec4 diffuse_light_color;
+uniform vec4 ambient_light;
+
+
+out vec4 frag_color;
+
+void main(){
+	vec3 lightDir;
+	float lightIntensity;
+	
+	// Set the default output color to the ambient light value for all pixels.
+	vec4 color1 = color * ambient_light;
+	
+	// Invert the light direction for calculations.
+	lightDir = -light_direction;
+
+	// Calculate the amount of light on this pixel.
+	lightIntensity = clamp(dot(normal, lightDir), 0.0f, 1.0f);
+	
+	if(lightIntensity > 0.0f)
+	{
+		// Determine the final diffuse color based on the diffuse color and the amount of light intensity.
+		color1 += (diffuse_light_color * lightIntensity);
+	}
+
+	// Clamp the final light color.
+	color1 = clamp(color1, 0.0f, 1.0f);
+	
+	frag_color = color1 * texture2D(myTexture,out_coord_texture);
+}