![]() |
![]() |
![]() |
Cogl Reference Manual | ![]() |
---|---|---|---|---|
Top | Description |
#define cogl_texture_3d_new_with_size #define cogl_texture_3d_new_from_data #define cogl_is_texture_3d
These functions allow 3D textures to be used. 3D textures can be thought of as layers of 2D images arranged into a cuboid shape. When choosing a texel from the texture, Cogl will take into account the 'r' texture coordinate to select one of the images.
#define cogl_texture_3d_new_with_size cogl_texture_3d_new_with_size_EXP
Creates a new Cogl 3D texture with the specified dimensions and pixel format.
Note that this function will throw a GError if
COGL_FEATURE_TEXTURE_3D
is not advertised. It can also fail if the
requested dimensions are not supported by the GPU.
|
width of the texture in pixels. |
|
height of the texture in pixels. |
|
depth of the texture in pixels. |
|
Optional flags for the texture, or COGL_TEXTURE_NONE
|
|
the CoglPixelFormat to use for the GPU storage of the texture. |
|
A GError return location. |
Returns : |
a new handle to a CoglTexture3D object or
COGL_INVALID_HANDLE on failure.
|
Since 1.4
Stability Level: Unstable
#define cogl_texture_3d_new_from_data cogl_texture_3d_new_from_data_EXP
Creates a new 3D texture and initializes it with data
. The data is
assumed to be packed array of depth
images. There can be padding
between the images using image_stride
.
Note that this function will throw a GError if
COGL_FEATURE_TEXTURE_3D
is not advertised. It can also fail if the
requested dimensions are not supported by the GPU.
|
width of the texture in pixels. |
|
height of the texture in pixels. |
|
depth of the texture in pixels. |
|
Optional flags for the texture, or COGL_TEXTURE_NONE
|
|
the CoglPixelFormat the buffer is stored in in RAM |
|
the CoglPixelFormat that will be used for storing
the buffer on the GPU. If COGL_PIXEL_FORMAT_ANY is given then a
premultiplied format similar to the format of the source data will
be used. The default blending equations of Cogl expect premultiplied
color data; the main use of passing a non-premultiplied format here
is if you have non-premultiplied source data and are going to adjust
the blend mode (see cogl_material_set_blend() ) or use the data for
something other than straight blending.
|
|
the memory offset in bytes between the starts of
scanlines in data or 0 to infer it from the width and format
|
|
the number of bytes from one image to the next. This
can be used to add padding between the images in a similar way
that the rowstride can be used to add padding between
rows. Alternatively 0 can be passed to infer the image_stride
from the height .
|
|
pointer the memory region where the source buffer resides |
|
A GError return location. |
Returns : |
the newly created texture or COGL_INVALID_HANDLE if
there was an error.
|
Since 1.4
Stability Level: Unstable
#define cogl_is_texture_3d cogl_is_texture_3d_EXP
Checks whether handle
is a CoglHandle for a 3D texture.
|
a CoglHandle |
Returns : |
TRUE if the passed handle represents a 3D texture
and FALSE otherwise
|
Since 1.4
Stability Level: Unstable