// Unified Interface:
CommandBuffer::DrawIndexed(std::uint32_t numIndices, std::uint32_t firstIndex);

// OpenGL Implementation:
void GLCommandBuffer::DrawIndexed(std::uint32_t numIndices, std::uint32_t firstIndex)
{
    const GLsizeiptr indices = firstIndex * renderState_.indexBufferStride;
    glDrawElements(
        renderState_.drawMode,
        static_cast<GLsizei>(numIndices),
        renderState_.indexBufferDataType,
        reinterpret_cast<const GLvoid*>(indices)
    );
}

// Direct3D 11 Implementation
void D3D11CommandBuffer::DrawIndexed(std::uint32_t numIndices, std::uint32_t firstIndex)
{
    context_->DrawIndexed(numIndices, firstIndex, 0);
}

// Direct3D 12 Implementation
void D3D12CommandBuffer::DrawIndexed(std::uint32_t numIndices, std::uint32_t firstIndex)
{
    commandList_->DrawIndexedInstanced(numIndices, 1, firstIndex, 0, 0);
}

// Vulkan Implementation
void VKCommandBuffer::DrawIndexed(std::uint32_t numIndices, std::uint32_t firstIndex)
{
    vkCmdDrawIndexed(commandBuffer_, numIndices, 1, firstIndex, 0, 0);
}