4 files changed, 70 insertions, 0 deletions

diff --git a/src/Platform/OpenGL/OpenGLRendererAPI.cpp b/src/Platform/OpenGL/OpenGLRendererAPI.cpp
index 3c49144..d181203 100644
--- a/src/Platform/OpenGL/OpenGLRendererAPI.cpp
+++ b/src/Platform/OpenGL/OpenGLRendererAPI.cpp
@@ -49,6 +49,11 @@ namespace Donut
         glEnable(GL_DEPTH_TEST);
     }
 
+    void OpenGLRendererAPI::DisableDepthTest()
+    {
+        glDisable(GL_DEPTH_TEST);
+    }
+
     void OpenGLRendererAPI::SetFaceCulling(bool enabled)
     {
         if (enabled)
@@ -61,6 +66,17 @@ namespace Donut
             glDisable(GL_CULL_FACE);
     }
 
+    void OpenGLRendererAPI::EnableBlending()
+    {
+        glEnable(GL_BLEND);
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    }
+
+    void OpenGLRendererAPI::DisableBlending()
+    {
+        glDisable(GL_BLEND);
+    }
+
     void OpenGLRendererAPI::DrawIndexed(const Ref<VertexArray>& vertexArray, uint32_t indexCount)
     {
         uint32_t count = indexCount ? indexCount : vertexArray->GetIndexBuffer()->GetCount();
diff --git a/src/Platform/OpenGL/OpenGLRendererAPI.h b/src/Platform/OpenGL/OpenGLRendererAPI.h
index 97e508b..f6b9fb4 100644
--- a/src/Platform/OpenGL/OpenGLRendererAPI.h
+++ b/src/Platform/OpenGL/OpenGLRendererAPI.h
@@ -19,7 +19,10 @@ namespace Donut
         virtual void SetClearColor(const glm::vec4& color)        override;
         virtual void Clear()                                      override;
         virtual void EnableDepthTest()                            override;
+        virtual void DisableDepthTest() override;
         virtual void SetFaceCulling(bool enabled)                 override;
+        virtual void EnableBlending() override;
+        virtual void DisableBlending() override;
 
         virtual void DrawIndexed(const Ref<VertexArray>& vertexArray, 
                                  uint32_t indexCount = 0)         override;
diff --git a/src/Platform/OpenGL/OpenGLUniformBuffer.cpp b/src/Platform/OpenGL/OpenGLUniformBuffer.cpp
new file mode 100644
index 0000000..631b863
--- /dev/null
+++ b/src/Platform/OpenGL/OpenGLUniformBuffer.cpp
@@ -0,0 +1,29 @@
+#include "OpenGLUniformBuffer.h"
+
+namespace Donut
+{
+    OpenGLUniformBuffer::OpenGLUniformBuffer(uint32_t size, uint32_t binding)
+        : m_Size(size), m_Binding(binding)
+    {
+        glGenBuffers(1, &m_RendererID);
+        glBindBuffer(GL_UNIFORM_BUFFER, m_RendererID);
+        glBufferData(GL_UNIFORM_BUFFER, size, nullptr, GL_DYNAMIC_DRAW);
+        glBindBufferBase(GL_UNIFORM_BUFFER, binding, m_RendererID);
+    }
+
+    OpenGLUniformBuffer::~OpenGLUniformBuffer()
+    {
+        glDeleteBuffers(1, &m_RendererID);
+    }
+
+    void OpenGLUniformBuffer::SetData(const void* data, uint32_t size, uint32_t offset)
+    {
+        glBindBuffer(GL_UNIFORM_BUFFER, m_RendererID);
+        glBufferSubData(GL_UNIFORM_BUFFER, offset, size, data);
+    }
+
+    void OpenGLUniformBuffer::Bind(uint32_t binding)
+    {
+        glBindBufferBase(GL_UNIFORM_BUFFER, binding, m_RendererID);
+    }
+};
diff --git a/src/Platform/OpenGL/OpenGLUniformBuffer.h b/src/Platform/OpenGL/OpenGLUniformBuffer.h
new file mode 100644
index 0000000..6e7fac1
--- /dev/null
+++ b/src/Platform/OpenGL/OpenGLUniformBuffer.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "Rendering/UniformBuffer.h"
+#include <glad/glad.h>
+
+namespace Donut
+{
+    class OpenGLUniformBuffer : public UniformBuffer
+    {
+    public:
+        OpenGLUniformBuffer(uint32_t size, uint32_t binding);
+        virtual ~OpenGLUniformBuffer();
+
+        virtual void SetData(const void* data, uint32_t size, uint32_t offset = 0) override;
+        virtual void Bind(uint32_t binding) override;
+
+    private:
+        uint32_t m_RendererID = 0;
+        uint32_t m_Size = 0;
+        uint32_t m_Binding = 0;
+    };
+};