2000-06-09 01:22:02 +01:00
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Name
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2000-06-23 18:34:47 +01:00
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MESA_pixmap_colormap
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2000-06-09 01:22:02 +01:00
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Name Strings
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2000-06-23 18:34:47 +01:00
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GLX_MESA_pixmap_colormap
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2000-06-09 01:22:02 +01:00
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Contact
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2004-03-25 01:42:41 +00:00
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Brian Paul (brian.paul 'at' tungstengraphics.com)
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2000-06-09 01:22:02 +01:00
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Status
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Shipping since Mesa 1.2.8 in May, 1996.
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Version
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Last Modified Date: 8 June 2000
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Number
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2000-06-23 18:34:47 +01:00
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216
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2000-06-09 01:22:02 +01:00
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Dependencies
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OpenGL 1.0 or later is required.
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GLX 1.0 or later is required.
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Overview
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Since Mesa allows RGB rendering into drawables with PseudoColor,
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StaticColor, GrayScale and StaticGray visuals, Mesa needs a colormap
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in order to compute pixel values during rendering.
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The colormap associated with a window can be queried with normal
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Xlib functions but there is no colormap associated with pixmaps.
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The glXCreateGLXPixmapMESA function is an alternative to glXCreateGLXPixmap
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which allows specification of a colormap.
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IP Status
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Open-source; freely implementable.
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Issues
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None.
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New Procedures and Functions
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GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
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2000-06-23 18:34:47 +01:00
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Pixmap pixmap, Colormap cmap );
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2000-06-09 01:22:02 +01:00
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New Tokens
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None.
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Additions to Chapter 3 of the GLX 1.3 Specification (Functions and Errors)
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Add to section 3.4.2 Off Screen Rendering
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The Mesa implementation of GLX allows RGB rendering into X windows and
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pixmaps of any visual class, not just TrueColor or DirectColor. In order
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to compute pixel values from RGB values Mesa requires a colormap.
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The function
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2000-06-23 18:34:47 +01:00
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GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
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Pixmap pixmap, Colormap cmap );
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2000-06-09 01:22:02 +01:00
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allows one to create a GLXPixmap with a specific colormap. The image
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rendered into the pixmap may then be copied to a window (which uses the
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same colormap and visual) with the expected results.
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GLX Protocol
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None since this is a client-side extension.
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Errors
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None.
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New State
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None.
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Revision History
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8 June 2000 - initial specification
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