[feat]: reduce renderer abstraction

1 files changed, 40 insertions, 11 deletions

diff --git a/src/rendering/vertex_buffer.cpp b/src/rendering/vertex_buffer.cpp
index 354d0cd..1bc471c 100644
--- a/src/rendering/vertex_buffer.cpp
+++ b/src/rendering/vertex_buffer.cpp
@@ -1,21 +1,50 @@
 #include "vertex_buffer.h"
-#include "renderer.h"
 
-#include "platform/opengl/opengl_vertex_buffer.h"
-#include "platform/vulkan/vulkan_vertex_buffer.h"
+#include <glad/glad.h>
 
 namespace Donut
 {
-    auto VertexBuffer::create(const void* data, uint32_t size) -> VertexBuffer*
+    auto VertexBufferElement::get_size_of_type(uint32_t type) -> uint32_t
     {
-        switch (Renderer::get_api()) 
+        switch (type)
         {
-            case RendererAPI::API::OpenGL:
-                return new OpenGLVertexBuffer(data, size);
-            case RendererAPI::API::Vulkan:
-                return new VulkanVertexBuffer((float*)data, size);
-            default:
-                return nullptr;
+            case 0x1406: return 4; // GL_FLOAT
+            case 0x1405: return 4; // GL_UNSIGNED_INT
+            case 0x1401: return 1; // GL_UNSIGNED_BYTE
+            default: return 0;
         }
     }
+
+    VertexBuffer::VertexBuffer(const void* data, uint32_t size)
+    {
+        glGenBuffers(1, &m_renderer_id); // glCreateBuffers is 4.5 DSA; unavailable on macOS 4.1
+        glBindBuffer(GL_ARRAY_BUFFER, m_renderer_id);
+        glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);
+    }
+
+    VertexBuffer::~VertexBuffer()
+    {
+        glDeleteBuffers(1, &m_renderer_id);
+    }
+
+    auto VertexBuffer::bind() const -> void
+    {
+        glBindBuffer(GL_ARRAY_BUFFER, m_renderer_id);
+    }
+
+    auto VertexBuffer::unbind() const -> void
+    {
+        glBindBuffer(GL_ARRAY_BUFFER, 0);
+    }
+
+    auto VertexBuffer::set_data(const void* data, uint32_t size) -> void
+    {
+        glBindBuffer(GL_ARRAY_BUFFER, m_renderer_id);
+        glBufferSubData(GL_ARRAY_BUFFER, 0, size, data);
+    }
+
+    auto VertexBuffer::create(const void* data, uint32_t size) -> VertexBuffer*
+    {
+        return new VertexBuffer(data, size);
+    }
 };