From 7b2c0f9148eb7eb30326173899ed366fcef8d437 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Fri, 9 Jun 2000 00:22:02 +0000 Subject: [PATCH] initial check-in --- docs/MESA_copy_sub_buffer.spec | 88 +++++++++++++++++++++++++++++++++++++++++ docs/MESA_pixmap_colormap.spec | 90 ++++++++++++++++++++++++++++++++++++++++++ docs/MESA_release_buffers.spec | 85 +++++++++++++++++++++++++++++++++++++++ docs/MESA_set_3dfx_mode.spec | 85 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 348 insertions(+) create mode 100644 docs/MESA_copy_sub_buffer.spec create mode 100644 docs/MESA_pixmap_colormap.spec create mode 100644 docs/MESA_release_buffers.spec create mode 100644 docs/MESA_set_3dfx_mode.spec diff --git a/docs/MESA_copy_sub_buffer.spec b/docs/MESA_copy_sub_buffer.spec new file mode 100644 index 0000000..6402a5f --- /dev/null +++ b/docs/MESA_copy_sub_buffer.spec @@ -0,0 +1,88 @@ +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. + + and indicates the lower-left corner of the region to copy and + and 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 + diff --git a/docs/MESA_pixmap_colormap.spec b/docs/MESA_pixmap_colormap.spec new file mode 100644 index 0000000..63e9df9 --- /dev/null +++ b/docs/MESA_pixmap_colormap.spec @@ -0,0 +1,90 @@ +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 diff --git a/docs/MESA_release_buffers.spec b/docs/MESA_release_buffers.spec new file mode 100644 index 0000000..f27ffaa --- /dev/null +++ b/docs/MESA_release_buffers.spec @@ -0,0 +1,85 @@ +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 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 diff --git a/docs/MESA_set_3dfx_mode.spec b/docs/MESA_set_3dfx_mode.spec new file mode 100644 index 0000000..c57456a --- /dev/null +++ b/docs/MESA_set_3dfx_mode.spec @@ -0,0 +1,85 @@ +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 ); + + 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 is valid and the operation completed + normally. GL_FALSE is returned if 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 -- 2.7.4