Do Lab 2.01

Author: Mohammed-Nour

src/renderer/raytracer/raytracer.h

@@ -82,8 +82,8 @@ namespace cg::renderer
 	class raytracer
 	{
 	public:
-		raytracer(){};
-		~raytracer(){};
+		raytracer() {};
+		~raytracer() {};
 
 		void set_render_target(std::shared_ptr<resource<RT>> in_render_target);
 		void clear_render_target(const RT& in_clear_value);
@@ -122,22 +122,25 @@ namespace cg::renderer
 	inline void raytracer<VB, RT>::set_render_target(
 			std::shared_ptr<resource<RT>> in_render_target)
 	{
-		// TODO Lab: 2.01 Implement `set_render_target`, `set_viewport`, and `clear_render_target` methods of `raytracer` class
+		render_target = in_render_target;
 	}
 
 	template<typename VB, typename RT>
 	inline void raytracer<VB, RT>::set_viewport(size_t in_width,
 												size_t in_height)
 	{
-		// TODO Lab: 2.01 Implement `set_render_target`, `set_viewport`, and `clear_render_target` methods of `raytracer` class
+		width = in_width;
+		height = in_height;
 		// TODO Lab: 2.06 Add `history` resource in `raytracer` class
 	}
 
 	template<typename VB, typename RT>
 	inline void raytracer<VB, RT>::clear_render_target(
 			const RT& in_clear_value)
 	{
-		// TODO Lab: 2.01 Implement `set_render_target`, `set_viewport`, and `clear_render_target` methods of `raytracer` class
+		for (size_t i = 0; i < render_target->get_number_of_elements(); i++) {
+			render_target->item(i) = in_clear_value;
+		}
 		// TODO Lab: 2.06 Add `history` resource in `raytracer` class
 	}
 
@@ -165,19 +168,33 @@ namespace cg::renderer
 			float3 position, float3 direction,
 			float3 right, float3 up, size_t depth, size_t accumulation_num)
 	{
-		// TODO Lab: 2.01 Implement `ray_generation` and `trace_ray` method of `raytracer` class
+#pragma omp parallel for
+		for (int x = 0; x < width; x++) {
+			for (int y = 0; y < height; y++) {
+				float u = (2.f * x) / static_cast<float>(width) - 1.f;
+				float v = (2.f * y) / static_cast<float>(height) - 1.f;
+				u *= static_cast<float>(width) / static_cast<float>(height);
+				float3 ray_direction = direction + right * u - up * v;
+				ray primary_ray(position, ray_direction);
+				payload payload = trace_ray(primary_ray, depth);
+				render_target->item(x, y) = RT::from_color(payload.color);
+			}
+		}
 		// TODO Lab: 2.06 Implement TAA in `ray_generation` method of `raytracer` class
 	}
 
 	template<typename VB, typename RT>
 	inline payload raytracer<VB, RT>::trace_ray(
 			const ray& ray, size_t depth, float max_t, float min_t) const
 	{
-		// TODO Lab: 2.01 Implement `ray_generation` and `trace_ray` method of `raytracer` class
+		if (depth == 0) {
+			return miss_shader(ray);
+		}
+		depth--;
 		// TODO Lab: 2.02 Adjust `trace_ray` method of `raytracer` class to traverse geometry and call a closest hit shader
 		// TODO Lab: 2.04 Adjust `trace_ray` method of `raytracer` to use `any_hit_shader`
 		// TODO Lab: 2.05 Adjust `trace_ray` method of `raytracer` class to traverse the acceleration structure
-		return payload{};
+		return miss_shader(ray);
 	}
 
 	template<typename VB, typename RT>