buffer_get_surface(buffer, surface, mode, offset, modulo);
| 参数 | 描述 |
|---|---|
| buffer | The index of the buffer to use. |
| surface | The index of the surface to use. |
| mode | The data to get from the surface (see the list of constants below). |
| 偏移 | The data offset value. |
| modulo | The offset from the end of the line to the start of the next |
返回： N/A（无返回值）
With this function you can write the information from a surface
to a given buffer. The buffer must have been created previously and
should be a 1byte aligned grow buffer of an approximate size
(in bytes) of the surface you are going to write. You can choose
the copy "mode" for the data being stored which is set by the
constants listed below, as well as the offset and modulo values.
Both offset and modulo are byte values, with the offset defining
the start position within the buffer and modulo being the number of
bytes left at the end of every line (for storing additional data).
Note that the function writes each pixel of the surface to the
buffer using a BGRA formatting on the Windows target, but on
other targets it may be different depending on the OS or even the
device.
| 常量 | 描述 |
|---|---|
| buffer_surface_copy | Copies all data from the surface. |
buffer_get_surface(buff, application_surface, buffer_surface_copy, 0, 0);
The above code will copy the data stored in the application surface to the buffer indexed in the variable "buff" with no offset or modulo values.