buffer_selection.hpp

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#pragma once
#ifndef OGLPLUS_CONTEXT_BUFFER_SELECTION_1201040722_HPP
#define OGLPLUS_CONTEXT_BUFFER_SELECTION_1201040722_HPP

#include <oglplus/glfunc.hpp>
#include <oglplus/color_buffer.hpp>
#include <oglplus/framebuffer_attachment.hpp>
#include <oglplus/one_of.hpp>

namespace oglplus {
namespace context {


class BufferSelection
{
public:
    typedef OneOf<
        GLenum,
        std::tuple<
            oglplus::ColorBuffer,
            oglplus::FramebufferColorAttachment
        >
    > ColorBuffer;

#if OGLPLUS_DOCUMENTATION_ONLY || GL_VERSION_3_0

    static void DrawBuffer(ColorBuffer buffer)
    {
        OGLPLUS_GLFUNC(DrawBuffer)(GLenum(buffer));
        OGLPLUS_VERIFY_SIMPLE(DrawBuffer);
    }


    static void DrawBuffers(const EnumArray<ColorBuffer>& buffers)
    {
        OGLPLUS_GLFUNC(DrawBuffers)(
            buffers.Count(),
            buffers.Values()
        );
        OGLPLUS_VERIFY_SIMPLE(DrawBuffers);
    }

    static void DrawBuffers(GLsizei count, const ColorBuffer* buffers)
    {
        DrawBuffers(oglplus::EnumArray<ColorBuffer>(count, buffers));
    }
#endif // GL_VERSION_3_0


    static void ReadBuffer(ColorBuffer buffer)
    {
        OGLPLUS_GLFUNC(ReadBuffer)(GLenum(buffer));
        OGLPLUS_VERIFY_SIMPLE(ReadBuffer);
    }
};

} // namespace context
} // namespace oglplus

#endif // include guard