refactor: fold the OpenGL backend classes into rendering

1 files changed, 26 insertions, 13 deletions

diff --git a/src/rendering/index_buffer.cpp b/src/rendering/index_buffer.cpp
index 9603c72..38abe49 100644
--- a/src/rendering/index_buffer.cpp
+++ b/src/rendering/index_buffer.cpp
@@ -1,21 +1,34 @@
 #include "index_buffer.h"
-#include "renderer.h"
 
-#include "platform/opengl/opengl_index_buffer.h"
-#include "platform/vulkan/vulkan_index_buffer.h"
+#include <glad/glad.h>
 
-namespace Donut 
+namespace Donut
 {
+    IndexBuffer::IndexBuffer(const uint32_t* indices, uint32_t count)
+        : m_count(count)
+    {
+        glGenBuffers(1, &m_renderer_id);
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_renderer_id);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, count * sizeof(uint32_t), indices, GL_STATIC_DRAW);
+    }
+
+    IndexBuffer::~IndexBuffer()
+    {
+        glDeleteBuffers(1, &m_renderer_id);
+    }
+
+    auto IndexBuffer::bind() const -> void
+    {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_renderer_id);
+    }
+
+    auto IndexBuffer::unbind() const -> void
+    {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+    }
+
     auto IndexBuffer::create(const uint32_t* indices, uint32_t count) -> IndexBuffer*
     {
-        switch (Renderer::get_api()) 
-        {
-            case RendererAPI::API::OpenGL:
-                return new OpenGLIndexBuffer(indices, count);
-            case RendererAPI::API::Vulkan:
-                return new VulkanIndexBuffer((uint32_t*)indices, count);
-            default:
-                return nullptr;
-        }
+        return new IndexBuffer(indices, count);
     }
 };