From a2ec7dabd48a70ea69623406ddd0f8f97af403c8 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Tue, 12 Aug 2025 18:12:37 +0200
Subject: [add]: Start of a basic rendering backend

---
 src/Rendering/Renderer.cpp | 63 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 src/Rendering/Renderer.cpp

(limited to 'src/Rendering/Renderer.cpp')

diff --git a/src/Rendering/Renderer.cpp b/src/Rendering/Renderer.cpp
new file mode 100644
index 0000000..7b75a18
--- /dev/null
+++ b/src/Rendering/Renderer.cpp
@@ -0,0 +1,63 @@
+#include "Renderer.h"
+#include "Platform/OpenGL/OpenGLRendererAPI.h"
+#include <memory>
+#include <glm/gtc/matrix_transform.hpp>
+
+namespace Donut {
+
+    Scope<RendererAPI> RendererAPI::Create() {
+        switch (s_API) {
+            case API::OpenGL:
+                return std::make_unique<OpenGLRendererAPI>();
+            default:
+                return nullptr;
+        }
+    }
+
+    RendererAPI::API RendererAPI::s_API = RendererAPI::API::OpenGL;
+
+    Renderer::SceneData* Renderer::s_SceneData = new Renderer::SceneData;
+
+    void Renderer::Init() {
+        RenderCommand::Init();
+    }
+
+    void Renderer::Shutdown() {
+        delete s_SceneData;
+    }
+
+    void Renderer::OnWindowResize(uint32_t width, uint32_t height) {
+        RenderCommand::SetViewport(0, 0, width, height);
+    }
+
+    void Renderer::BeginScene() {
+        // Set up scene data
+        s_SceneData->ViewProjectionMatrix = glm::ortho(-1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f);
+    }
+
+    void Renderer::EndScene() {
+        // Clean up scene data
+    }
+
+    void Renderer::Submit(const std::shared_ptr<Shader>& shader, 
+                         const std::shared_ptr<VertexArray>& vertexArray,
+                         const glm::mat4& transform) {
+        shader->Bind();
+        shader->SetMat4("u_ViewProjection", s_SceneData->ViewProjectionMatrix);
+        shader->SetMat4("u_Transform", transform);
+
+        vertexArray->Bind();
+        RenderCommand::DrawIndexed(vertexArray);
+    }
+
+    Scope<RendererAPI> RenderCommand::s_RendererAPI = RendererAPI::Create();
+
+    void Renderer::SetClearColor(const glm::vec4& color) {
+        RenderCommand::SetClearColor(color);
+    }
+
+    void Renderer::Clear() {
+        RenderCommand::Clear();
+    }
+
+}
-- 
cgit v1.3