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author | marha <marha@users.sourceforge.net> | 2009-10-08 13:15:52 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-10-08 13:15:52 +0000 |
commit | a0c4815433ccd57322f4f7703ca35e9ccfa59250 (patch) | |
tree | f5213802ec12adb86ec3136001c1c29fe5343700 /mesalib/docs/MESA_pixmap_colormap.spec | |
parent | c73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff) | |
download | vcxsrv-a0c4815433ccd57322f4f7703ca35e9ccfa59250.tar.gz vcxsrv-a0c4815433ccd57322f4f7703ca35e9ccfa59250.tar.bz2 vcxsrv-a0c4815433ccd57322f4f7703ca35e9ccfa59250.zip |
Added MesaLib-7.6
Diffstat (limited to 'mesalib/docs/MESA_pixmap_colormap.spec')
-rw-r--r-- | mesalib/docs/MESA_pixmap_colormap.spec | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/mesalib/docs/MESA_pixmap_colormap.spec b/mesalib/docs/MESA_pixmap_colormap.spec new file mode 100644 index 000000000..fb0b441cc --- /dev/null +++ b/mesalib/docs/MESA_pixmap_colormap.spec @@ -0,0 +1,90 @@ +Name + + MESA_pixmap_colormap + +Name Strings + + GLX_MESA_pixmap_colormap + +Contact + + Brian Paul (brian.paul 'at' tungstengraphics.com) + +Status + + Shipping since Mesa 1.2.8 in May, 1996. + +Version + + Last Modified Date: 8 June 2000 + +Number + + 216 + +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 |