89 lines
1.8 KiB
RPMSpec
89 lines
1.8 KiB
RPMSpec
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Name
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MESA_copy_sub_buffer
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Name Strings
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GLX_MESA_copy_sub_buffer
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Contact
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Brian Paul (brian.paul 'at' tungstengraphics.com)
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Status
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Shipping since Mesa 2.6 in February, 1998.
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Version
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Last Modified Date: 8 June 2000
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Number
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215
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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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The glxCopySubBufferMESA() function copies a rectangular region
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of the back color buffer to the front color buffer. This can be
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used to quickly repaint 3D windows in response to expose events
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when the back color buffer cannot be damaged by other windows.
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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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void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
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int x, int y, int width, int height );
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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 3.3.10 Double Buffering:
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The function
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void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
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int x, int y, int width, int height );
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may be used to copy a rectangular region of the back color buffer to
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the front color buffer. This can be used to quickly repaint 3D windows
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in response to expose events when the back color buffer cannot be
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damaged by other windows.
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<x> and <y> indicates the lower-left corner of the region to copy and
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<width> and <height> indicate the size in pixels. Coordinate (0,0)
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corresponds to the lower-left pixel of the window, like glReadPixels.
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GLX Protocol
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None at this time. The extension is implemented in terms of ordinary
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Xlib protocol inside of Mesa.
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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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