--- /dev/null
+Name
+
+ MESA_copy_sub_buffer
+
+Name Strings
+
+ GLX_MESA_copy_sub_buffer
+
+Contact
+
+ Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+ Shipping since Mesa 2.6 in February, 1998.
+
+Version
+
+ Last Modified Date: 8 June 2000
+
+Number
+
+ ???
+
+Dependencies
+
+ OpenGL 1.0 or later is required.
+ GLX 1.0 or later is required.
+
+Overview
+
+ The glxCopySubBufferMESA() function copies a rectangular region
+ of the back color buffer to the front color buffer. This can be
+ used to quickly repaint 3D windows in response to expose events
+ when the back color buffer cannot be damaged by other windows.
+
+IP Status
+
+ Open-source; freely implementable.
+
+Issues
+
+ None.
+
+New Procedures and Functions
+
+ void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
+ int x, int y, int width, int height );
+
+New Tokens
+
+ None.
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+ Add to section 3.3.10 Double Buffering:
+
+ The function
+
+ void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
+ int x, int y, int width, int height );
+
+ may be used to copy a rectangular region of the back color buffer to
+ the front color buffer. This can be used to quickly repaint 3D windows
+ in response to expose events when the back color buffer cannot be
+ damaged by other windows.
+
+ <x> and <y> indicates the lower-left corner of the region to copy and
+ <width> and <height> indicate the size in pixels. Coordinate (0,0)
+ corresponds to the lower-left pixel of the window, like glReadPixels.
+
+GLX Protocol
+
+ None at this time. The extension is implemented in terms of ordinary
+ Xlib protocol inside of Mesa.
+
+Errors
+
+ None.
+
+New State
+
+ None.
+
+Revision History
+
+ 8 June 2000 - initial specification
+
--- /dev/null
+Name
+
+ MESA_copy_sub_buffer
+
+Name Strings
+
+ GLX_MESA_copy_sub_buffer
+
+Contact
+
+ Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+ Shipping since Mesa 1.2.8 in May, 1996.
+
+Version
+
+ Last Modified Date: 8 June 2000
+
+Number
+
+ ???
+
+Dependencies
+
+ OpenGL 1.0 or later is required.
+ GLX 1.0 or later is required.
+
+Overview
+
+ Since Mesa allows RGB rendering into drawables with PseudoColor,
+ StaticColor, GrayScale and StaticGray visuals, Mesa needs a colormap
+ in order to compute pixel values during rendering.
+
+ The colormap associated with a window can be queried with normal
+ Xlib functions but there is no colormap associated with pixmaps.
+
+ The glXCreateGLXPixmapMESA function is an alternative to glXCreateGLXPixmap
+ which allows specification of a colormap.
+
+IP Status
+
+ Open-source; freely implementable.
+
+Issues
+
+ None.
+
+New Procedures and Functions
+
+ GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
+ Pixmap pixmap, Colormap cmap );
+
+New Tokens
+
+ None.
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+ Add to section 3.4.2 Off Screen Rendering
+
+ The Mesa implementation of GLX allows RGB rendering into X windows and
+ pixmaps of any visual class, not just TrueColor or DirectColor. In order
+ to compute pixel values from RGB values Mesa requires a colormap.
+
+ The function
+
+ GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
+ Pixmap pixmap, Colormap cmap );
+
+ allows one to create a GLXPixmap with a specific colormap. The image
+ rendered into the pixmap may then be copied to a window (which uses the
+ same colormap and visual) with the expected results.
+
+GLX Protocol
+
+ None since this is a client-side extension.
+
+Errors
+
+ None.
+
+New State
+
+ None.
+
+Revision History
+
+ 8 June 2000 - initial specification
--- /dev/null
+Name
+
+ MESA_release_buffers
+
+Name Strings
+
+ GLX_MESA_release_buffers
+
+Contact
+
+ Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+ Shipping since Mesa 2.0 in October, 1996.
+
+Version
+
+ Last Modified Date: 8 June 2000
+
+Number
+
+ ???
+
+Dependencies
+
+ OpenGL 1.0 or later is required.
+ GLX 1.0 or later is required.
+
+Overview
+
+ Mesa's implementation of GLX is entirely implemented on the client side.
+ Therefore, Mesa cannot immediately detect when an X window or pixmap is
+ destroyed in order to free any ancilliary data associated with the window
+ or pixmap.
+
+ The glxMesaReleaseBuffers() function can be used to explicitly indicate
+ when the back color buffer, depth buffer, stencil buffer, and/or accum-
+ ulation buffer associated with a drawable can be freed.
+
+IP Status
+
+ Open-source; freely implementable.
+
+Issues
+
+ None.
+
+New Procedures and Functions
+
+ Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d );
+
+New Tokens
+
+ None.
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+ The function
+
+ Bool glXReleaseBuffersMESA( Display *dpy, GLXDrawable d );
+
+ causes all software ancilliary buffers (back buffer, depth, stencil,
+ accum, etc) associated with the named drawable to be immediately
+ deallocated. True is returned if <d> is a valid Mesa GLX drawable,
+ else False is returned. After calling glXReleaseBuffersMESA, the
+ drawable should no longer be used for GL rendering. Results of
+ attempting to do so are undefined.
+
+
+GLX Protocol
+
+ None, since this is a client-side operation.
+
+Errors
+
+ None.
+
+New State
+
+ None.
+
+Revision History
+
+ 8 June 2000 - initial specification
--- /dev/null
+Name
+
+ MESA_set_3dfx_mode
+
+Name Strings
+
+ GLX_MESA_set_3dfx_mode
+
+Contact
+
+ Brian Paul (brian 'at' mesa3d.org)
+
+Status
+
+ Shipping since Mesa 2.6 in February, 1998.
+
+Version
+
+ Last Modified Date: 8 June 2000
+
+Number
+
+ ???
+
+Dependencies
+
+ OpenGL 1.0 or later is required.
+ GLX 1.0 or later is required.
+
+Overview
+
+ The Mesa Glide driver allows full-screen rendering or rendering into
+ an X window. The glXSet3DfxModeMESA() function allows an application
+ to switch between full-screen and windowed rendering.
+
+IP Status
+
+ Open-source; freely implementable.
+
+Issues
+
+ None.
+
+New Procedures and Functions
+
+ GLboolean glXSet3DfxModeMESA( GLint mode );
+
+New Tokens
+
+ GLX_3DFX_WINDOW_MODE_MESA 0x1
+ GLX_3DFX_FULLSCREEN_MODE_MESA 0x2
+
+Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
+
+ The Mesa Glide device driver allows either rendering in full-screen
+ mode or rendering into an X window. An application can switch between
+ full-screen and window rendering with the command:
+
+ GLboolean glXSet3DfxModeMESA( GLint mode );
+
+ <mode> may either be GLX_3DFX_WINDOW_MODE_MESA to indicate window
+ rendering or GLX_3DFX_FULLSCREEN_MODE_MESA to indicate full-screen mode.
+
+ GL_TRUE is returned if <mode> is valid and the operation completed
+ normally. GL_FALSE is returned if <mode> is invalid or if the Glide
+ driver is not being used.
+
+ Note that only one drawable and context can be created at any given
+ time with the Mesa Glide driver.
+
+GLX Protocol
+
+ None since this is a client-side extension.
+
+Errors
+
+ None.
+
+New State
+
+ None.
+
+Revision History
+
+ 8 June 2000 - initial specification
projects / mesa.git / commitdiff