1 files changed, 28 insertions, 0 deletions
diff --git a/src/platform/opengl/opengl_index_buffer.cpp b/src/platform/opengl/opengl_index_buffer.cpp
new file mode 100644
index 0000000..faa6b81
--- /dev/null
+++ b/src/platform/opengl/opengl_index_buffer.cpp
@@ -0,0 +1,28 @@
+#include "opengl_index_buffer.h"
+#include <glad/glad.h>
+
+namespace Donut
+{
+    OpenGLIndexBuffer::OpenGLIndexBuffer(const uint32_t* indices, uint32_t count)
+        : m_count(count)
+    {
+        glGenBuffers(1, &m_renderer_id); // glCreateBuffers is 4.5 DSA; unavailable on macOS 4.1
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_renderer_id);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, count * sizeof(uint32_t), indices, GL_STATIC_DRAW);
+    }
+
+    OpenGLIndexBuffer::~OpenGLIndexBuffer() 
+    {
+        glDeleteBuffers(1, &m_renderer_id);
+    }
+
+    auto OpenGLIndexBuffer::bind() const -> void
+    {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_renderer_id);
+    }
+
+    auto OpenGLIndexBuffer::unbind() const -> void
+    {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+    }
+};