feat: opengl buffer & nested uniform buffer class

engine/src/opengl/buffers.cpp

@@ -0,0 +1,58 @@
+#include "engine/opengl/buffers.h"
+
+namespace Core {
+
+namespace OpenGL {
+
+    Buffer::Buffer(BufferTarget target, BufferUsage usage)
+        : m_target(target), m_usage(usage)
+    {
+        glGenBuffers(1, &m_buffer);
+        Bind();
+        Data(nullptr, 0);
+        Unbind();
+    }
+
+    void Buffer::Bind() {
+        glBindBuffer(m_target, m_buffer);
+    }
+
+    void Buffer::Unbind() {
+        glBindBuffer(m_target, 0);
+    }
+
+    void Buffer::Data(void *data, size_t size) {
+        Bind();
+        glBufferData(m_target, size, data, m_usage);
+        Unbind();
+    }
+
+    void Buffer::SubData(void *data, size_t size, size_t offset) {
+        Bind();
+        glBufferSubData(m_target, offset, size, data);
+        Unbind();
+    }
+
+    void Buffer::BindBuffer(unsigned int index) {
+        Bind();
+        glBindBufferBase(m_target, index, m_buffer);
+        Unbind();
+    }
+
+    void Buffer::BindBufferRanged(unsigned int index, size_t offset, size_t size) {
+        Bind();
+        glBindBufferRange(m_target, index, m_buffer, offset, size);
+        Unbind();
+    }
+
+    UniformBuffer::UniformBuffer(size_t size, unsigned int index)
+        : Buffer(GL_UNIFORM_BUFFER, GL_STATIC_DRAW)
+    {
+        Data(nullptr, size);
+
+        BindBuffer(index);
+    }
+
+} // namespace OpenGL
+
+} // namespace Core