Method
CoglTextureset_components
Declaration [src]
void
cogl_texture_set_components (
CoglTexture* texture,
CoglTextureComponents components
)
Description [src]
Affects the internal storage format for this texture by specifying what components will be required for sampling later.
This api affects how data is uploaded to the GPU since unused components can potentially be discarded from source data.
For textures created by the ‘_with_size’ constructors the default
is COGL_TEXTURE_COMPONENTS_RGBA. The other constructors which take
a %CoglBitmap or a data pointer default to the same components as
the pixel format of the data.
Note that the COGL_TEXTURE_COMPONENTS_RG format is not available
on all drivers. The availability can be determined by checking for
the COGL_FEATURE_ID_TEXTURE_RG feature. If this format is used on
a driver where it is not available then COGL_TEXTURE_ERROR_FORMAT
will be raised when the texture is allocated. Even if the feature
is not available then COGL_PIXEL_FORMAT_RG_88 can still be used as
an image format as long as COGL_TEXTURE_COMPONENTS_RG isn’t used
as the texture’s components.
Parameters
components-
Type:
CoglTextureComponentsNo description available.