buffers.h File Reference

Configure vertex array buffers. More...

#include "types.h"

Go to the source code of this file.

Data Structures
struct	C3D_BufCfg
	Vertex buffer config. More...
struct	C3D_BufInfo
	Vertex buffer info. More...

Functions
void	BufInfo_Init (C3D_BufInfo *info)
	Resets and initializes C3D_BufInfo structure to default values. More...
int	BufInfo_Add (C3D_BufInfo *info, const void *data, ptrdiff_t stride, int attribCount, u64 permutation)
	Adds a buffer to the vertex buffer info struct. More...
C3D_BufInfo *	C3D_GetBufInfo (void)
	Gets pointer to the global C3D_BufInfo structure. More...
void	C3D_SetBufInfo (C3D_BufInfo *info)
	Sets global C3D_BufInfo structure. Copies values from the specified C3D_BufInfo structure to the global C3D_BufInfo structure. More...

Detailed Description

Configure vertex array buffers.

Function Documentation

BufInfo_Add()

int BufInfo_Add	(	C3D_BufInfo *	info,
		const void *	data,
		ptrdiff_t	stride,
		int	attribCount,
		u64	permutation
	)

Adds a buffer to the vertex buffer info struct.

Note

The attribute indices specified in permutation should be the same as the ones returned by AttrInfo_AddLoader()

Parameters

[out]	info	Pointer to a C3D_BufInfo struct.
[in]	data	Pointer to buffer.
[in]	stride	Distance in bytes between vertex entries in the buffer (usually set to the size of the vertex structure).
[in]	attribCount	Number of attributes to load from this buffer.
[in]	permutation	Specifies the order of attributes in the buffer. Each attribute index is a nibble (4 bits), and they are ordered from least significant to most significant. Padding can be specified with 0xC, 0xD, 0xE and 0xF. (See https://3dbrew.org/wiki/GPU/Internal_Registers#GPUREG_ATTRIBBUFFERi_CONFIG1 for more info)

Remarks

Using this, one can rearrange the positions of attributes in the struct. For example, with three attributes in this buffer, setting this to 0x210 would configure the permutation to be the first attribute index, then the second, then the third. 0x120 would configure the permutation to be the first attribute index, then the third, then the second.

Returns

Buffer index if successful, negative value on failure.

BufInfo_Init()

void BufInfo_Init

(

C3D_BufInfo *

info

)

Resets and initializes C3D_BufInfo structure to default values.

Parameters

[out]

info

Pointer to vertex buffer info structure.

C3D_GetBufInfo()

C3D_BufInfo* C3D_GetBufInfo

(

void

)

Gets pointer to the global C3D_BufInfo structure.

Returns

Pointer to C3D_BufInfo. This should not be freed.

C3D_SetBufInfo()

void C3D_SetBufInfo

(

C3D_BufInfo *

info

)

Sets global C3D_BufInfo structure. Copies values from the specified C3D_BufInfo structure to the global C3D_BufInfo structure.

Parameters

[in]

info

Pointer to user C3D_BufInfo.