4 files changed, 70 insertions, 0 deletions

diff --git a/src/platform/opengl/opengl_renderer_api.cpp b/src/platform/opengl/opengl_renderer_api.cpp
index 4542231..628c0af 100644
--- a/src/platform/opengl/opengl_renderer_api.cpp
+++ b/src/platform/opengl/opengl_renderer_api.cpp
@@ -49,6 +49,11 @@ namespace Donut
         glEnable(GL_DEPTH_TEST);
     }
 
+    void OpenGLRendererAPI::disable_depth_test()
+    {
+        glDisable(GL_DEPTH_TEST);
+    }
+
     void OpenGLRendererAPI::set_face_culling(bool enabled)
     {
         if (enabled)
@@ -61,6 +66,17 @@ namespace Donut
             glDisable(GL_CULL_FACE);
     }
 
+    void OpenGLRendererAPI::enable_blending()
+    {
+        glEnable(GL_BLEND);
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    }
+
+    void OpenGLRendererAPI::disable_blending()
+    {
+        glDisable(GL_BLEND);
+    }
+
     void OpenGLRendererAPI::draw_indexed(const Ref<VertexArray>& vertex_array, uint32_t index_count)
     {
         uint32_t count = index_count ? index_count : vertex_array->get_index_buffer()->get_count();
diff --git a/src/platform/opengl/opengl_renderer_api.h b/src/platform/opengl/opengl_renderer_api.h
index 25accbb..fd446c6 100644
--- a/src/platform/opengl/opengl_renderer_api.h
+++ b/src/platform/opengl/opengl_renderer_api.h
@@ -19,7 +19,10 @@ namespace Donut
         virtual void set_clear_color(const glm::vec4& color)        override;
         virtual void clear()                                      override;
         virtual void enable_depth_test()                            override;
+        virtual void disable_depth_test() override;
         virtual void set_face_culling(bool enabled)                 override;
+        virtual void enable_blending() override;
+        virtual void disable_blending() override;
 
         virtual void draw_indexed(const Ref<VertexArray>& vertex_array, 
                                  uint32_t index_count = 0)         override;
diff --git a/src/platform/opengl/opengl_uniform_buffer.cpp b/src/platform/opengl/opengl_uniform_buffer.cpp
new file mode 100644
index 0000000..ca7d3d2
--- /dev/null
+++ b/src/platform/opengl/opengl_uniform_buffer.cpp
@@ -0,0 +1,29 @@
+#include "opengl_uniform_buffer.h"
+
+namespace Donut
+{
+    OpenGLUniformBuffer::OpenGLUniformBuffer(uint32_t size, uint32_t binding)
+        : m_size(size), m_binding(binding)
+    {
+        glGenBuffers(1, &m_renderer_id);
+        glBindBuffer(GL_UNIFORM_BUFFER, m_renderer_id);
+        glBufferData(GL_UNIFORM_BUFFER, size, nullptr, GL_DYNAMIC_DRAW);
+        glBindBufferBase(GL_UNIFORM_BUFFER, binding, m_renderer_id);
+    }
+
+    OpenGLUniformBuffer::~OpenGLUniformBuffer()
+    {
+        glDeleteBuffers(1, &m_renderer_id);
+    }
+
+    void OpenGLUniformBuffer::set_data(const void* data, uint32_t size, uint32_t offset)
+    {
+        glBindBuffer(GL_UNIFORM_BUFFER, m_renderer_id);
+        glBufferSubData(GL_UNIFORM_BUFFER, offset, size, data);
+    }
+
+    void OpenGLUniformBuffer::bind(uint32_t binding)
+    {
+        glBindBufferBase(GL_UNIFORM_BUFFER, binding, m_renderer_id);
+    }
+};
diff --git a/src/platform/opengl/opengl_uniform_buffer.h b/src/platform/opengl/opengl_uniform_buffer.h
new file mode 100644
index 0000000..2a9131f
--- /dev/null
+++ b/src/platform/opengl/opengl_uniform_buffer.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "rendering/uniform_buffer.h"
+#include <glad/glad.h>
+
+namespace Donut
+{
+    class OpenGLUniformBuffer : public UniformBuffer
+    {
+    public:
+        OpenGLUniformBuffer(uint32_t size, uint32_t binding);
+        virtual ~OpenGLUniformBuffer();
+
+        virtual void set_data(const void* data, uint32_t size, uint32_t offset = 0) override;
+        virtual void bind(uint32_t binding) override;
+
+    private:
+        uint32_t m_renderer_id = 0;
+        uint32_t m_size = 0;
+        uint32_t m_binding = 0;
+    };
+};