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Diffstat (limited to 'src/gallium/winsys/xlib/xmesa.h')
| -rw-r--r-- | src/gallium/winsys/xlib/xmesa.h | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/src/gallium/winsys/xlib/xmesa.h b/src/gallium/winsys/xlib/xmesa.h new file mode 100644 index 0000000000..98139af833 --- /dev/null +++ b/src/gallium/winsys/xlib/xmesa.h @@ -0,0 +1,424 @@ +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/* + * Mesa/X11 interface. This header file serves as the documentation for + * the Mesa/X11 interface functions. + * + * Note: this interface isn't intended for user programs. It's primarily + * just for implementing the pseudo-GLX interface. + */ + + +/* Sample Usage: + +In addition to the usual X calls to select a visual, create a colormap +and create a window, you must do the following to use the X/Mesa interface: + +1. Call XMesaCreateVisual() to make an XMesaVisual from an XVisualInfo. + +2. Call XMesaCreateContext() to create an X/Mesa rendering context, given + the XMesaVisual. + +3. Call XMesaCreateWindowBuffer() to create an XMesaBuffer from an X window + and XMesaVisual. + +4. Call XMesaMakeCurrent() to bind the XMesaBuffer to an XMesaContext and + to make the context the current one. + +5. Make gl* calls to render your graphics. + +6. Use XMesaSwapBuffers() when double buffering to swap front/back buffers. + +7. Before the X window is destroyed, call XMesaDestroyBuffer(). + +8. Before exiting, call XMesaDestroyVisual and XMesaDestroyContext. + +*/ + + + + +#ifndef XMESA_H +#define XMESA_H + +#ifdef __VMS +#include <GL/vms_x_fix.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef XFree86Server +#include "xmesa_xf86.h" +#else +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include "xmesa_x.h" +#endif +#include "GL/gl.h" + +#ifdef AMIWIN +#include <pragmas/xlib_pragmas.h> +extern struct Library *XLibBase; +#endif + + +#define XMESA_MAJOR_VERSION 6 +#define XMESA_MINOR_VERSION 3 + + + +/* + * Values passed to XMesaGetString: + */ +#define XMESA_VERSION 1 +#define XMESA_EXTENSIONS 2 + + +/* + * Values passed to XMesaSetFXmode: + */ +#define XMESA_FX_WINDOW 1 +#define XMESA_FX_FULLSCREEN 2 + + + +typedef struct xmesa_context *XMesaContext; + +typedef struct xmesa_visual *XMesaVisual; + +typedef struct xmesa_buffer *XMesaBuffer; + + + +/* + * Create a new X/Mesa visual. + * Input: display - X11 display + * visinfo - an XVisualInfo pointer + * rgb_flag - GL_TRUE = RGB mode, + * GL_FALSE = color index mode + * alpha_flag - alpha buffer requested? + * db_flag - GL_TRUE = double-buffered, + * GL_FALSE = single buffered + * stereo_flag - stereo visual? + * ximage_flag - GL_TRUE = use an XImage for back buffer, + * GL_FALSE = use an off-screen pixmap for back buffer + * depth_size - requested bits/depth values, or zero + * stencil_size - requested bits/stencil values, or zero + * accum_red_size - requested bits/red accum values, or zero + * accum_green_size - requested bits/green accum values, or zero + * accum_blue_size - requested bits/blue accum values, or zero + * accum_alpha_size - requested bits/alpha accum values, or zero + * num_samples - number of samples/pixel if multisampling, or zero + * level - visual level, usually 0 + * visualCaveat - ala the GLX extension, usually GLX_NONE_EXT + * Return; a new XMesaVisual or 0 if error. + */ +extern XMesaVisual XMesaCreateVisual( XMesaDisplay *display, + XMesaVisualInfo visinfo, + GLboolean rgb_flag, + GLboolean alpha_flag, + GLboolean db_flag, + GLboolean stereo_flag, + GLboolean ximage_flag, + GLint depth_size, + GLint stencil_size, + GLint accum_red_size, + GLint accum_green_size, + GLint accum_blue_size, + GLint accum_alpha_size, + GLint num_samples, + GLint level, + GLint visualCaveat ); + +/* + * Destroy an XMesaVisual, but not the associated XVisualInfo. + */ +extern void XMesaDestroyVisual( XMesaVisual v ); + + + +/* + * Create a new XMesaContext for rendering into an X11 window. + * + * Input: visual - an XMesaVisual + * share_list - another XMesaContext with which to share display + * lists or NULL if no sharing is wanted. + * Return: an XMesaContext or NULL if error. + */ +extern XMesaContext XMesaCreateContext( XMesaVisual v, + XMesaContext share_list ); + + +/* + * Destroy a rendering context as returned by XMesaCreateContext() + */ +extern void XMesaDestroyContext( XMesaContext c ); + + +#ifdef XFree86Server +/* + * These are the extra routines required for integration with XFree86. + * None of these routines should be user visible. -KEM + */ +extern GLboolean XMesaForceCurrent( XMesaContext c ); + +extern GLboolean XMesaLoseCurrent( XMesaContext c ); + +extern GLboolean XMesaCopyContext( XMesaContext src, + XMesaContext dst, + GLuint mask ); +#endif /* XFree86Server */ + + +/* + * Create an XMesaBuffer from an X window. + */ +extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, XMesaWindow w ); + + +/* + * Create an XMesaBuffer from an X pixmap. + */ +extern XMesaBuffer XMesaCreatePixmapBuffer( XMesaVisual v, + XMesaPixmap p, + XMesaColormap cmap ); + + +/* + * Destroy an XMesaBuffer, but not the corresponding window or pixmap. + */ +extern void XMesaDestroyBuffer( XMesaBuffer b ); + + +/* + * Return the XMesaBuffer handle which corresponds to an X drawable, if any. + * + * New in Mesa 2.3. + */ +extern XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, + XMesaDrawable d ); + + + +/* + * Bind a buffer to a context and make the context the current one. + */ +extern GLboolean XMesaMakeCurrent( XMesaContext c, + XMesaBuffer b ); + + +/* + * Bind two buffers (read and draw) to a context and make the + * context the current one. + * New in Mesa 3.3 + */ +extern GLboolean XMesaMakeCurrent2( XMesaContext c, + XMesaBuffer drawBuffer, + XMesaBuffer readBuffer ); + + +/* + * Unbind the current context from its buffer. + */ +extern GLboolean XMesaUnbindContext( XMesaContext c ); + + +/* + * Return a handle to the current context. + */ +extern XMesaContext XMesaGetCurrentContext( void ); + + +/* + * Return handle to the current (draw) buffer. + */ +extern XMesaBuffer XMesaGetCurrentBuffer( void ); + + +/* + * Return handle to the current read buffer. + * New in Mesa 3.3 + */ +extern XMesaBuffer XMesaGetCurrentReadBuffer( void ); + + +/* + * Swap the front and back buffers for the given buffer. No action is + * taken if the buffer is not double buffered. + */ +extern void XMesaSwapBuffers( XMesaBuffer b ); + + +/* + * Copy a sub-region of the back buffer to the front buffer. + * + * New in Mesa 2.6 + */ +extern void XMesaCopySubBuffer( XMesaBuffer b, + int x, + int y, + int width, + int height ); + + +/* + * Return a pointer to the the Pixmap or XImage being used as the back + * color buffer of an XMesaBuffer. This function is a way to get "under + * the hood" of X/Mesa so one can manipulate the back buffer directly. + * Input: b - the XMesaBuffer + * Output: pixmap - pointer to back buffer's Pixmap, or 0 + * ximage - pointer to back buffer's XImage, or NULL + * Return: GL_TRUE = context is double buffered + * GL_FALSE = context is single buffered + */ +extern GLboolean XMesaGetBackBuffer( XMesaBuffer b, + XMesaPixmap *pixmap, + XMesaImage **ximage ); + + + +/* + * Return the depth buffer associated with an XMesaBuffer. + * Input: b - the XMesa buffer handle + * Output: width, height - size of buffer in pixels + * bytesPerValue - bytes per depth value (2 or 4) + * buffer - pointer to depth buffer values + * Return: GL_TRUE or GL_FALSE to indicate success or failure. + * + * New in Mesa 2.4. + */ +extern GLboolean XMesaGetDepthBuffer( XMesaBuffer b, + GLint *width, + GLint *height, + GLint *bytesPerValue, + void **buffer ); + + + +/* + * Flush/sync a context + */ +extern void XMesaFlush( XMesaContext c ); + + + +/* + * Get an X/Mesa-specific string. + * Input: name - either XMESA_VERSION or XMESA_EXTENSIONS + */ +extern const char *XMesaGetString( XMesaContext c, int name ); + + + +/* + * Scan for XMesaBuffers whose window/pixmap has been destroyed, then free + * any memory used by that buffer. + * + * New in Mesa 2.3. + */ +extern void XMesaGarbageCollect( void ); + + + +/* + * Return a dithered pixel value. + * Input: c - XMesaContext + * x, y - window coordinate + * red, green, blue, alpha - color components in [0,1] + * Return: pixel value + * + * New in Mesa 2.3. + */ +extern unsigned long XMesaDitherColor( XMesaContext xmesa, + GLint x, + GLint y, + GLfloat red, + GLfloat green, + GLfloat blue, + GLfloat alpha ); + + + +/* + * 3Dfx Glide driver only! + * Set 3Dfx/Glide full-screen or window rendering mode. + * Input: mode - either XMESA_FX_WINDOW (window rendering mode) or + * XMESA_FX_FULLSCREEN (full-screen rendering mode) + * Return: GL_TRUE if success + * GL_FALSE if invalid mode or if not using 3Dfx driver + * + * New in Mesa 2.6. + */ +extern GLboolean XMesaSetFXmode( GLint mode ); + + + +/* + * Reallocate the back/depth/stencil/accum/etc/ buffers associated with + * buffer <b> if its size has changed. + * + * New in Mesa 4.0.2 + */ +extern void XMesaResizeBuffers( XMesaBuffer b ); + + + +/* + * Create a pbuffer. + * New in Mesa 4.1 + */ +extern XMesaBuffer XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap, + unsigned int width, unsigned int height); + + + +/* + * Texture from Pixmap + * New in Mesa 7.1 + */ +extern void +XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer, + const int *attrib_list); + +extern void +XMesaReleaseTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer); + + +extern XMesaBuffer +XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p, + XMesaColormap cmap, + int format, int target, int mipmap); + + + +#ifdef __cplusplus +} +#endif + + +#endif |