Constructor

CoglTexture2Dnew_from_data

Declaration [src] 

CoglTexture*
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().

Parameters

ctx

Type: CoglContext

A CoglContext.

The data is owned by the caller of the function.
width

Type: int

Width of texture in pixels.

height

Type: int

Height of texture in pixels.

format

Type: CoglPixelFormat

The CoglPixelFormat the buffer is stored in in RAM.

rowstride

Type: 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

Type: An array of uint8_t

Pointer the memory region where the source buffer resides.

The data is owned by the caller of the function.
error

Type: GError **

The return location for a recoverable error.

The argument can be NULL.
If the return location is not NULL, then you must initialize it to a NULL GError*.
The argument will be left initialized to NULL by the constructor if there are no errors.
In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.

Return value

Type: CoglTexture

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.