| | '''OpenGL extension APPLE.aux_depth_stencil |
| | |
| | This module customises the behaviour of the |
| | OpenGL.raw.GL.APPLE.aux_depth_stencil to provide a more |
| | Python-friendly API |
| | |
| | Overview (from the spec) |
| | |
| | Normally, each OpenGL drawable allocates at most one depth buffer and one |
| | stencil buffer, regardless of how many aux buffers there are. |
| | |
| | When the APPLE_aux_depth_stencil extension is used, and the depth buffer |
| | size is non-zero, the GL silently allocates a separate depth buffer for the |
| | color buffer and for each aux buffer. Similarly, if the stencil buffer size |
| | is non-zero, a separate stencil buffer is allocated for the color buffer and |
| | each aux buffer. This extension does not cause separate depth or stencil |
| | buffers to be allocated for the left and right buffers of a stereo drawable. |
| | A context with no aux buffers will be unaffected by this extension. |
| | |
| | Switching the draw or read buffer from the color buffer to an aux buffer, or |
| | switching between two aux buffers, simultaneously switches the associated |
| | depth and stencil buffers, for drawing or reading. |
| | |
| | For example, if an OpenGL context has two aux buffers and non-zero depth |
| | buffer size, it will have a total of three depth buffers - one associated |
| | with the color buffer and one associated with each aux buffer. If that |
| | context is used to render to AUX0, then to render to AUX1, the changes to |
| | the depth buffer made by the rendering to AUX1 will not affect the depth |
| | buffer associated with AUX0, and vice versa. |
| | |
| | The official definition of this extension is available here: |
| | http://www.opengl.org/registry/specs/APPLE/aux_depth_stencil.txt |
| | ''' |
| | from OpenGL import platform, constant, arrays |
| | from OpenGL import extensions, wrapper |
| | import ctypes |
| | from OpenGL.raw.GL import _types, _glgets |
| | from OpenGL.raw.GL.APPLE.aux_depth_stencil import * |
| | from OpenGL.raw.GL.APPLE.aux_depth_stencil import _EXTENSION_NAME |
| |
|
| | def glInitAuxDepthStencilAPPLE(): |
| | '''Return boolean indicating whether this extension is available''' |
| | from OpenGL import extensions |
| | return extensions.hasGLExtension( _EXTENSION_NAME ) |
| |
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| |
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| | |
