Compositor: Difference between revisions

A buffer represents a texture or, more generically, a region of GPU memory. It can have the following parameters:

; name

: Passes will be able to address the buffer by this name.

; type

: Any texture type allowed by OpenGL: 1d, 2d, 2d-array, 2d-multisample, 3d, rect or cubemap.

; width

: Texture width. It's possible to write 'screen' to use the physical viewport width.

; screen-width-scale (Optional)

: If 'screen' was used, this controls the width scaling factor.

; height

: Texture height. It's possible to write 'screen' to use the physical viewport height.

; screen-height-scale (Optional)

: If 'screen' was used, this controls the height scaling factor.

; depth

: Texture depth.

: Specifies the texture format. It corresponds to the ''internalformat'', ''format'' and ''type'' arguments of the OpenGL function ''glTexImage2D''. See {{simgear file|simgear/scene/viewer/CompositorBuffer.cxx}} for the latest available values.

; min-filter and mag-filter (Optional)

: They change the minification and magnification filtering respectively. Possible values are: linear, linear-mipmap-linear, linear-mipmap-nearest, nearest, nearest-mipmap-linear and nearest-mipmap-nearest. The default value for both filters is linear.

; wrap-s, wrap-t and wrap-r (Optional)

: They change the wrap mode for each coordinate. Possible values are: clamp, clamp-to-edge, clamp-to-border, repeat and mirror. The default value for every coordinate is clamp-to-border.

   <internal-format>rgba8</internal-format>

  <wrap-t>repeat</wrap-t>