DSA buffer maps

#include <oglplus/dsa/buffer_map.hpp>

Raw

The DSABufferRawMap allows to map the contents of a GPU buffer into the client's address space.

#if GL_VERSION_4_5 || GL_ARB_direct_state_access

class DSABufferRawMap
{
public:
	DSABufferRawMap(
		BufferName buffer,
		BufferSize offset,
		BufferSize size,
		Bitfield<BufferMapAccess> access
	); 

	DSABufferRawMap(
		BufferName buffer,
		Bitfield<BufferMapAccess> access
	); 

	DSABufferRawMap(const DSABufferRawMap&) = delete; 
	DSABufferRawMap(DSABufferRawMap&&); 

	~DSABufferRawMap(void); 
	void Unmap(void);

	bool Mapped(void) const; 
	GLsizeiptr Size(void) const; 

	const GLvoid* RawData(void) const; 
	GLvoid* RawData(void);

	void FlushRange(BufferSize offset, BufferSize length); 
};

	Maps a range (specified by `offset` and `size`) of the specified `buffer` with the specified `access` to the client address space. See `glMapNamedBufferRange`.
	Maps the whole specified buffer with the specified `access` to the client address space. See `glMapNamedBuffer`.
	DSABuffer maps are not copyable.
	DSABuffer maps are moveable.
	Unmaps the buffer from client address space (if mapped). See `glUnmapNamedBuffer`.
	Returns true if the buffer is mapped.
	Returns the size (in bytes) of the mapped buffer.
	Returns a raw pointer to the mapped data. Note that the buffer has to be mapped or the result is undefined.
	Indicate modifications to a mapped buffer range. Note that the buffer has to be mapped or the result is undefined. See `glFlushMappedNamedBufferRange`.

Types

template <typename Type>
class DSABufferTypedMap
 : public DSABufferRawMap
{
public:
	DSABufferTypedMap(
		BufferName buffer,
		BufferTypedSize<Type> offset,
		BufferTypedSize<Type> size,
		Bitfield<BufferMapAccess> access
	) 

	DSABufferTypedMap(
		BufferName buffer,
		Bitfield<BufferMapAccess> access
	); 

	GLsizeiptr Count(void) const; 

	const Type* Data(void) const; 
	Type* Data(void);

	const Type& At(GLuint index) const; 
	Type& At(GLuint index);

	void FlushElements(
		BufferTypedSize<Type> start,
		BufferTypedSize<Type> count
	); 
};

#endif // GL_VERSION_4_5 || GL_ARB_direct_state_access

	Maps a range (specified by `offset` and `size`) of the specified `buffer` with the specified `access` to the client address space. See `glMapNamedBufferRange`.
	Maps the whole specified buffer with the specified `access` to the client address space. See `glMapNamedBuffer`.
	Returns the count of elements of `Type` in the mapped buffer.
	Returns a typed pointer to the mapped data. Note that the buffer has to be mapped or the result is undefined.
	Returns a reference to the element at the specified `index`. Note that the buffer has to be mapped or the result is undefined.
	Indicate modifications to a mapped range of elements of `Type`. Note that the buffer has to be mapped or the result is undefined. See `glFlushMappedNamedBufferRange`.