working on rtt

example/main.c

@@ -9,6 +9,8 @@ typedef struct
 	void* logo_jpg;
 	void* logo_bmp;
 	void* img;
+	void* render_target;
+	void* render_target_win;
 } mlx_t;
 
 int update(void* param)
@@ -50,6 +52,12 @@ int update(void* param)
 			mlx_pixel_put(mlx->mlx, mlx->win, 220 + j, 160 + k, 0xFFFF0000);
 	}
 
+	mlx_string_put(mlx->mlx, mlx->render_target_win, 20, 20, 0xFFAF2BFF, "cacaboudin");
+	mlx_transform_put_image_to_window(mlx->mlx, mlx->render_target_win, mlx->logo_bmp, 100, 40, 0.5f, 75.0f);
+	mlx_put_image_to_window(mlx->mlx, mlx->render_target_win, mlx->img, 40, 60);
+
+	mlx_put_image_to_window(mlx->mlx, mlx->win, mlx->render_target_win, 40, 60);
+
 	i++;
 	return 0;
 }
@@ -133,6 +141,9 @@ int main(void)
 	mlx.mlx = mlx_init();
 	mlx.win = mlx_new_window(mlx.mlx, 400, 400, "My window");
 
+	mlx.render_target = mlx_new_image(mlx.mlx, 200, 200);
+	mlx.render_target_win = mlx_new_window(mlx.mlx, 200, 200, (char*)mlx.render_target);
+
 	mlx_set_fps_goal(mlx.mlx, 60);
 
 	mlx_on_event(mlx.mlx, mlx.win, MLX_KEYDOWN, key_hook, &mlx);
@@ -161,6 +172,10 @@ int main(void)
 	mlx_destroy_image(mlx.mlx, mlx.logo_bmp);
 	mlx_destroy_image(mlx.mlx, mlx.img);
 	mlx_destroy_window(mlx.mlx, mlx.win);
+	
+	mlx_destroy_window(mlx.mlx, mlx.render_target_win);
+	mlx_destroy_image(mlx.mlx, mlx.render_target);
+
 	mlx_destroy_display(mlx.mlx);
 
 	return 0;

runtime/Includes/Renderer/RenderPasses/FinalPass.h

@@ -12,7 +12,7 @@ namespace mlx
 		public:
 			FinalPass() = default;
 			void Init();
-			void Pass(class Scene& scene, class Renderer& renderer, class Texture& render_target);
+			void Pass(class Scene& scene, class Renderer& renderer, class Texture& render_target, NonOwningPtr<class Texture> final_target);
 			void Destroy();
 			~FinalPass() = default;
 

runtime/Includes/Renderer/RenderPasses/Passes.h

@@ -12,7 +12,7 @@ namespace mlx
 		public:
 			RenderPasses() = default;
 
-			void Init();
+			void Init(NonOwningPtr<class Texture> render_target);
 			void Pass(class Scene& scene, class Renderer& renderer, const Vec4f& clear_color);
 			void Destroy();
 
@@ -22,6 +22,7 @@ namespace mlx
 			Render2DPass m_2Dpass;
 			FinalPass m_final;
 			Texture m_main_render_texture;
+			NonOwningPtr<class Texture> p_render_target;
 	};
 }
 

runtime/Includes/Renderer/ScenesRenderer.h

@@ -9,8 +9,8 @@ namespace mlx
 	{
 		public:
 			SceneRenderer() = default;
-			void Init();
+			void Init(NonOwningPtr<class Texture> render_target);
-			void Render(class Scene& scene, class Renderer& renderer); // TODO : add RTT support
+			void Render(class Scene& scene, class Renderer& renderer);
 			void Destroy();
 			~SceneRenderer() = default;
 

runtime/Sources/Core/Graphics.cpp

@@ -10,9 +10,8 @@ namespace mlx
 		m_has_window(false)
 	{
 		MLX_PROFILE_FUNCTION();
-		// TODO : re-enable render targets
 		m_renderer.Init(nullptr);
-		m_scene_renderer.Init();
+		m_scene_renderer.Init(render_target);
 		p_scene = std::make_unique<Scene>();
 	}
 
@@ -24,7 +23,7 @@ namespace mlx
 	{
 		MLX_PROFILE_FUNCTION();
 		m_renderer.Init(p_window.get());
-		m_scene_renderer.Init();
+		m_scene_renderer.Init(nullptr);
 		p_scene = std::make_unique<Scene>();
 	}
 

runtime/Sources/Renderer/RenderPasses/FinalPass.cpp

@@ -41,7 +41,7 @@ namespace mlx
 		p_set = RenderCore::Get().GetDescriptorPoolManager().GetAvailablePool().RequestDescriptorSet(p_fragment_shader->GetShaderLayout().set_layouts[0].second, ShaderType::Fragment);
 	}
 
-	void FinalPass::Pass([[maybe_unused]] Scene& scene, Renderer& renderer, Texture& render_target)
+	void FinalPass::Pass([[maybe_unused]] Scene& scene, Renderer& renderer, Texture& render_target, NonOwningPtr<class Texture> final_target)
 	{
 		MLX_PROFILE_FUNCTION();
 		if(m_pipeline.GetPipeline() == VK_NULL_HANDLE)
@@ -49,7 +49,10 @@ namespace mlx
 			GraphicPipelineDescriptor pipeline_descriptor;
 			pipeline_descriptor.vertex_shader = p_vertex_shader;
 			pipeline_descriptor.fragment_shader = p_fragment_shader;
-			pipeline_descriptor.renderer = &renderer;
+			if(final_target)
+				pipeline_descriptor.color_attachments = { final_target };
+			else
+				pipeline_descriptor.renderer = &renderer;
 			pipeline_descriptor.no_vertex_inputs = true;
 			#ifdef DEBUG
 				m_pipeline.Init(pipeline_descriptor, "mlx_final_pass");

runtime/Sources/Renderer/RenderPasses/Passes.cpp

@@ -5,8 +5,10 @@
 
 namespace mlx
 {
-	void RenderPasses::Init()
+	void RenderPasses::Init(NonOwningPtr<class Texture> render_target)
 	{
+		p_render_target = render_target;
+
 		m_2Dpass.Init();
 		m_final.Init();
 		func::function<void(const EventBase&)> functor = [this](const EventBase& event)
@@ -21,7 +23,11 @@ namespace mlx
 	{
 		if(!m_main_render_texture.IsInit())
 		{
-			auto extent = kvfGetSwapchainImagesSize(renderer.GetSwapchain().Get());
+			VkExtent2D extent;
+			if(p_render_target)
+				extent = VkExtent2D{ .width = p_render_target->GetWidth(), .height = p_render_target->GetHeight() };
+			else
+				extent = kvfGetSwapchainImagesSize(renderer.GetSwapchain().Get());
 			#ifdef DEBUG
 				m_main_render_texture.Init({}, extent.width, extent.height, VK_FORMAT_R8G8B8A8_SRGB, false, "mlx_renderpasses_target");
 			#else
@@ -32,7 +38,7 @@ namespace mlx
 		m_main_render_texture.Clear(renderer.GetActiveCommandBuffer(), clear_color);
 
 		m_2Dpass.Pass(scene, renderer, m_main_render_texture);
-		m_final.Pass(scene, renderer, m_main_render_texture);
+		m_final.Pass(scene, renderer, m_main_render_texture, p_render_target);
 	}
 
 	void RenderPasses::Destroy()

runtime/Sources/Renderer/Renderer.cpp

@@ -19,7 +19,8 @@ namespace mlx
 	{
 		MLX_PROFILE_FUNCTION();
 		p_window = window;
-		m_swapchain.Init(p_window);
+		if(p_window)
+			m_swapchain.Init(p_window);
 		for(std::size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++)
 		{
 			m_image_available_semaphores[i] = kvfCreateSemaphore(RenderCore::Get().GetDevice());
@@ -37,7 +38,8 @@ namespace mlx
 	{
 		MLX_PROFILE_FUNCTION();
 		kvfWaitForFence(RenderCore::Get().GetDevice(), m_cmd_fences[m_current_frame_index]);
-		m_swapchain.AquireFrame(m_image_available_semaphores[m_current_frame_index]);
+		if(p_window)
+			m_swapchain.AquireFrame(m_image_available_semaphores[m_current_frame_index]);
 		RenderCore::Get().vkResetCommandBuffer(m_cmd_buffers[m_current_frame_index], 0);
 		kvfBeginCommandBuffer(m_cmd_buffers[m_current_frame_index], 0);
 		m_drawcalls = 0;
@@ -50,8 +52,12 @@ namespace mlx
 		MLX_PROFILE_FUNCTION();
 		VkPipelineStageFlags wait_stages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
 		kvfEndCommandBuffer(m_cmd_buffers[m_current_frame_index]);
-		kvfSubmitCommandBuffer(RenderCore::Get().GetDevice(), m_cmd_buffers[m_current_frame_index], KVF_GRAPHICS_QUEUE, m_render_finished_semaphores[m_current_frame_index], m_image_available_semaphores[m_current_frame_index], m_cmd_fences[m_current_frame_index], wait_stages);
+		if(p_window)
-		m_swapchain.Present(m_render_finished_semaphores[m_current_frame_index]);
+			kvfSubmitCommandBuffer(RenderCore::Get().GetDevice(), m_cmd_buffers[m_current_frame_index], KVF_GRAPHICS_QUEUE, m_render_finished_semaphores[m_current_frame_index], m_image_available_semaphores[m_current_frame_index], m_cmd_fences[m_current_frame_index], wait_stages);
+		else
+			kvfSubmitCommandBuffer(RenderCore::Get().GetDevice(), m_cmd_buffers[m_current_frame_index], KVF_GRAPHICS_QUEUE, VK_NULL_HANDLE, VK_NULL_HANDLE, m_cmd_fences[m_current_frame_index], wait_stages);
+		if(p_window)
+			m_swapchain.Present(m_render_finished_semaphores[m_current_frame_index]);
 		m_current_frame_index = (m_current_frame_index + 1) % MAX_FRAMES_IN_FLIGHT;
 	}
 
@@ -68,6 +74,7 @@ namespace mlx
 			kvfDestroyFence(RenderCore::Get().GetDevice(), m_cmd_fences[i]);
 			DebugLog("Vulkan: fence destroyed");
 		}
-		m_swapchain.Destroy();
+		if(p_window)
+			m_swapchain.Destroy();
 	}
 }

runtime/Sources/Renderer/SceneRenderer.cpp

@@ -6,10 +6,10 @@
 
 namespace mlx
 {
-	void SceneRenderer::Init()
+	void SceneRenderer::Init(NonOwningPtr<class Texture> render_target)
 	{
 		MLX_PROFILE_FUNCTION();
-		m_passes.Init();
+		m_passes.Init(render_target);
 	}
 
 	void SceneRenderer::Render(Scene& scene, Renderer& renderer)