Constructor

CoglTexture2Dnew_from_data

Declaration [src]

CoglTexture2D*
cogl_texture_2d_new_from_data (
  CoglContext* ctx,
  int width,
  int height,
  CoglPixelFormat format,
  int rowstride,
  const uint8_t* data,
  GError** error
)

Description [src]

Creates a low-level CoglTexture2D texture based on data residing in memory.

This api will always immediately allocate GPU memory for the texture and upload the given data so that the data pointer does not need to remain valid once this function returns. This means it is not possible to configure the texture before it is allocated. If you do need to configure the texture before allocation (to specify constraints on the internal format for example) then you can instead create a CoglBitmap for your data and use cogl_texture_2d_new_from_bitmap() or use cogl_texture_2d_new_with_size() and then upload data using cogl_texture_set_data()

Available since:

2.0

Parameters

`ctx`	`CoglContext`
	A `CoglContext`.
	The data is owned by the caller of the function.
`width`	`int`
	Width of texture in pixels.
`height`	`int`
	Height of texture in pixels.
`format`	`CoglPixelFormat`
	The `CoglPixelFormat` the buffer is stored in in RAM.
`rowstride`	`int`
	The memory offset in bytes between the starts of scanlines in `data`. A value of 0 will make Cogl automatically calculate `rowstride` from `width` and `format`.
`data`	`const uint8_t*`
	Pointer the memory region where the source buffer resides.
	The data is owned by the caller of the function.
`error`	`GError **`
	The return location for a `GError*`, or `NULL`.

Return value

Returns:	`CoglTexture2D`
	A newly allocated `CoglTexture2D`, or if the size is not supported (because it is too large or a non-power-of-two size that the hardware doesn’t support) it will return `NULL` and set `error`.
	The caller of the function takes ownership of the data, and is responsible for freeing it.