diff options
Diffstat (limited to 'src/gallium/winsys/xlib/xm_api.c')
| -rw-r--r-- | src/gallium/winsys/xlib/xm_api.c | 1422 |
1 files changed, 0 insertions, 1422 deletions
diff --git a/src/gallium/winsys/xlib/xm_api.c b/src/gallium/winsys/xlib/xm_api.c deleted file mode 100644 index 613aa99fa1..0000000000 --- a/src/gallium/winsys/xlib/xm_api.c +++ /dev/null @@ -1,1422 +0,0 @@ -/* - * 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. - */ - -/** - * \file xm_api.c - * - * All the XMesa* API functions. - * - * - * NOTES: - * - * The window coordinate system origin (0,0) is in the lower-left corner - * of the window. X11's window coordinate origin is in the upper-left - * corner of the window. Therefore, most drawing functions in this - * file have to flip Y coordinates. - * - * Define USE_XSHM in the Makefile with -DUSE_XSHM if you want to compile - * in support for the MIT Shared Memory extension. If enabled, when you - * use an Ximage for the back buffer in double buffered mode, the "swap" - * operation will be faster. You must also link with -lXext. - * - * Byte swapping: If the Mesa host and the X display use a different - * byte order then there's some trickiness to be aware of when using - * XImages. The byte ordering used for the XImage is that of the X - * display, not the Mesa host. - * The color-to-pixel encoding for True/DirectColor must be done - * according to the display's visual red_mask, green_mask, and blue_mask. - * If XPutPixel is used to put a pixel into an XImage then XPutPixel will - * do byte swapping if needed. If one wants to directly "poke" the pixel - * into the XImage's buffer then the pixel must be byte swapped first. - * - */ - -#ifdef __CYGWIN__ -#undef WIN32 -#undef __WIN32__ -#endif - -#include "glxheader.h" -#include "xmesa.h" -#include "xmesaP.h" -#include "main/context.h" -#include "main/framebuffer.h" - -#include "state_tracker/st_public.h" -#include "state_tracker/st_context.h" -#include "pipe/p_defines.h" -#include "pipe/p_screen.h" -#include "pipe/p_context.h" - -#include "xm_winsys_aub.h" - -/** - * Global X driver lock - */ -pipe_mutex _xmesa_lock; - - -int xmesa_mode; - - -/**********************************************************************/ -/***** X Utility Functions *****/ -/**********************************************************************/ - - -/** - * Return the host's byte order as LSBFirst or MSBFirst ala X. - */ -#ifndef XFree86Server -static int host_byte_order( void ) -{ - int i = 1; - char *cptr = (char *) &i; - return (*cptr==1) ? LSBFirst : MSBFirst; -} -#endif - - -/** - * Check if the X Shared Memory extension is available. - * Return: 0 = not available - * 1 = shared XImage support available - * 2 = shared Pixmap support available also - */ -int xmesa_check_for_xshm( XMesaDisplay *display ) -{ -#if defined(USE_XSHM) && !defined(XFree86Server) - int major, minor, ignore; - Bool pixmaps; - - if (getenv("SP_NO_RAST")) - return 0; - - if (getenv("MESA_NOSHM")) { - return 0; - } - - if (XQueryExtension( display, "MIT-SHM", &ignore, &ignore, &ignore )) { - if (XShmQueryVersion( display, &major, &minor, &pixmaps )==True) { - return (pixmaps==True) ? 2 : 1; - } - else { - return 0; - } - } - else { - return 0; - } -#else - /* No XSHM support */ - return 0; -#endif -} - - -/** - * Return the true number of bits per pixel for XImages. - * For example, if we request a 24-bit deep visual we may actually need/get - * 32bpp XImages. This function returns the appropriate bpp. - * Input: dpy - the X display - * visinfo - desribes the visual to be used for XImages - * Return: true number of bits per pixel for XImages - */ -static int -bits_per_pixel( XMesaVisual xmv ) -{ -#ifdef XFree86Server - const int depth = xmv->nplanes; - int i; - assert(depth > 0); - for (i = 0; i < screenInfo.numPixmapFormats; i++) { - if (screenInfo.formats[i].depth == depth) - return screenInfo.formats[i].bitsPerPixel; - } - return depth; /* should never get here, but this should be safe */ -#else - XMesaDisplay *dpy = xmv->display; - XMesaVisualInfo visinfo = xmv->visinfo; - XMesaImage *img; - int bitsPerPixel; - /* Create a temporary XImage */ - img = XCreateImage( dpy, visinfo->visual, visinfo->depth, - ZPixmap, 0, /*format, offset*/ - (char*) MALLOC(8), /*data*/ - 1, 1, /*width, height*/ - 32, /*bitmap_pad*/ - 0 /*bytes_per_line*/ - ); - assert(img); - /* grab the bits/pixel value */ - bitsPerPixel = img->bits_per_pixel; - /* free the XImage */ - _mesa_free( img->data ); - img->data = NULL; - XMesaDestroyImage( img ); - return bitsPerPixel; -#endif -} - - - -/* - * Determine if a given X window ID is valid (window exists). - * Do this by calling XGetWindowAttributes() for the window and - * checking if we catch an X error. - * Input: dpy - the display - * win - the window to check for existance - * Return: GL_TRUE - window exists - * GL_FALSE - window doesn't exist - */ -#ifndef XFree86Server -static GLboolean WindowExistsFlag; - -static int window_exists_err_handler( XMesaDisplay* dpy, XErrorEvent* xerr ) -{ - (void) dpy; - if (xerr->error_code == BadWindow) { - WindowExistsFlag = GL_FALSE; - } - return 0; -} - -static GLboolean window_exists( XMesaDisplay *dpy, Window win ) -{ - XWindowAttributes wa; - int (*old_handler)( XMesaDisplay*, XErrorEvent* ); - WindowExistsFlag = GL_TRUE; - old_handler = XSetErrorHandler(window_exists_err_handler); - XGetWindowAttributes( dpy, win, &wa ); /* dummy request */ - XSetErrorHandler(old_handler); - return WindowExistsFlag; -} - -static Status -get_drawable_size( XMesaDisplay *dpy, Drawable d, uint *width, uint *height ) -{ - Window root; - Status stat; - int xpos, ypos; - unsigned int w, h, bw, depth; - stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth); - *width = w; - *height = h; - return stat; -} -#endif - - -/** - * Return the size of the window (or pixmap) that corresponds to the - * given XMesaBuffer. - * \param width returns width in pixels - * \param height returns height in pixels - */ -static void -xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b, - GLuint *width, GLuint *height) -{ -#ifdef XFree86Server - *width = MIN2(b->drawable->width, MAX_WIDTH); - *height = MIN2(b->drawable->height, MAX_HEIGHT); -#else - Status stat; - - pipe_mutex_lock(_xmesa_lock); - XSync(b->xm_visual->display, 0); /* added for Chromium */ - stat = get_drawable_size(dpy, b->drawable, width, height); - pipe_mutex_unlock(_xmesa_lock); - - if (!stat) { - /* probably querying a window that's recently been destroyed */ - _mesa_warning(NULL, "XGetGeometry failed!\n"); - *width = *height = 1; - } -#endif -} - - -/** - * Choose the pixel format for the given visual. - * This will tell the gallium driver how to pack pixel data into - * drawing surfaces. - */ -static GLuint -choose_pixel_format(XMesaVisual v) -{ - if ( GET_REDMASK(v) == 0x0000ff - && GET_GREENMASK(v) == 0x00ff00 - && GET_BLUEMASK(v) == 0xff0000 - && v->BitsPerPixel == 32) { - if (CHECK_BYTE_ORDER(v)) { - /* no byteswapping needed */ - return 0 /* PIXEL_FORMAT_U_A8_B8_G8_R8 */; - } - else { - return PIPE_FORMAT_R8G8B8A8_UNORM; - } - } - else if ( GET_REDMASK(v) == 0xff0000 - && GET_GREENMASK(v) == 0x00ff00 - && GET_BLUEMASK(v) == 0x0000ff - && v->BitsPerPixel == 32) { - if (CHECK_BYTE_ORDER(v)) { - /* no byteswapping needed */ - return PIPE_FORMAT_A8R8G8B8_UNORM; - } - else { - return PIPE_FORMAT_B8G8R8A8_UNORM; - } - } - else if ( GET_REDMASK(v) == 0xf800 - && GET_GREENMASK(v) == 0x07e0 - && GET_BLUEMASK(v) == 0x001f - && CHECK_BYTE_ORDER(v) - && v->BitsPerPixel == 16) { - /* 5-6-5 RGB */ - return PIPE_FORMAT_R5G6B5_UNORM; - } - - assert(0); - return 0; -} - - - -/**********************************************************************/ -/***** Linked list of XMesaBuffers *****/ -/**********************************************************************/ - -XMesaBuffer XMesaBufferList = NULL; - - -/** - * Allocate a new XMesaBuffer object which corresponds to the given drawable. - * Note that XMesaBuffer is derived from GLframebuffer. - * The new XMesaBuffer will not have any size (Width=Height=0). - * - * \param d the corresponding X drawable (window or pixmap) - * \param type either WINDOW, PIXMAP or PBUFFER, describing d - * \param vis the buffer's visual - * \param cmap the window's colormap, if known. - * \return new XMesaBuffer or NULL if any problem - */ -static XMesaBuffer -create_xmesa_buffer(XMesaDrawable d, BufferType type, - XMesaVisual vis, XMesaColormap cmap) -{ - XMesaBuffer b; - GLframebuffer *fb; - enum pipe_format colorFormat, depthFormat, stencilFormat; - uint width, height; - - ASSERT(type == WINDOW || type == PIXMAP || type == PBUFFER); - - b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer); - if (!b) - return NULL; - - b->drawable = d; - - b->xm_visual = vis; - b->type = type; - b->cmap = cmap; - - /* determine PIPE_FORMATs for buffers */ - colorFormat = choose_pixel_format(vis); - - if (vis->mesa_visual.depthBits == 0) - depthFormat = PIPE_FORMAT_NONE; -#ifdef GALLIUM_CELL /* XXX temporary for Cell! */ - else - depthFormat = PIPE_FORMAT_S8Z24_UNORM; -#else - else if (vis->mesa_visual.depthBits <= 16) - depthFormat = PIPE_FORMAT_Z16_UNORM; - else if (vis->mesa_visual.depthBits <= 24) - depthFormat = PIPE_FORMAT_S8Z24_UNORM; - else - depthFormat = PIPE_FORMAT_Z32_UNORM; -#endif - - if (vis->mesa_visual.stencilBits == 8) { - if (depthFormat == PIPE_FORMAT_S8Z24_UNORM) - stencilFormat = depthFormat; - else - stencilFormat = PIPE_FORMAT_S8_UNORM; - } - else { - /* no stencil */ - stencilFormat = PIPE_FORMAT_NONE; - if (depthFormat == PIPE_FORMAT_S8Z24_UNORM) { - /* use 24-bit Z, undefined stencil channel */ - depthFormat = PIPE_FORMAT_X8Z24_UNORM; - } - } - - - get_drawable_size(vis->display, d, &width, &height); - - /* - * Create framebuffer, but we'll plug in our own renderbuffers below. - */ - b->stfb = st_create_framebuffer(&vis->mesa_visual, - colorFormat, depthFormat, stencilFormat, - width, height, - (void *) b); - fb = &b->stfb->Base; - - /* - * Create scratch XImage for xmesa_display_surface() - */ - b->tempImage = XCreateImage(vis->display, - vis->visinfo->visual, - vis->visinfo->depth, - ZPixmap, 0, /* format, offset */ - NULL, /* data */ - 0, 0, /* size */ - 32, /* bitmap_pad */ - 0); /* bytes_per_line */ - - /* GLX_EXT_texture_from_pixmap */ - b->TextureTarget = 0; - b->TextureFormat = GLX_TEXTURE_FORMAT_NONE_EXT; - b->TextureMipmap = 0; - - /* insert buffer into linked list */ - b->Next = XMesaBufferList; - XMesaBufferList = b; - - return b; -} - - -/** - * Find an XMesaBuffer by matching X display and colormap but NOT matching - * the notThis buffer. - */ -XMesaBuffer -xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis) -{ - XMesaBuffer b; - for (b = XMesaBufferList; b; b = b->Next) { - if (b->xm_visual->display == dpy && - b->cmap == cmap && - b != notThis) { - return b; - } - } - return NULL; -} - - -/** - * Remove buffer from linked list, delete if no longer referenced. - */ -static void -xmesa_free_buffer(XMesaBuffer buffer) -{ - XMesaBuffer prev = NULL, b; - - for (b = XMesaBufferList; b; b = b->Next) { - if (b == buffer) { - struct gl_framebuffer *fb = &buffer->stfb->Base; - - /* unlink buffer from list */ - if (prev) - prev->Next = buffer->Next; - else - XMesaBufferList = buffer->Next; - - /* mark as delete pending */ - fb->DeletePending = GL_TRUE; - - /* Since the X window for the XMesaBuffer is going away, we don't - * want to dereference this pointer in the future. - */ - b->drawable = 0; - - buffer->tempImage->data = NULL; - XDestroyImage(buffer->tempImage); - - /* Unreference. If count = zero we'll really delete the buffer */ - _mesa_unreference_framebuffer(&fb); - - XFreeGC(b->xm_visual->display, b->gc); - - free(buffer); - - return; - } - /* continue search */ - prev = b; - } - /* buffer not found in XMesaBufferList */ - _mesa_problem(NULL,"xmesa_free_buffer() - buffer not found\n"); -} - - - -/**********************************************************************/ -/***** Misc Private Functions *****/ -/**********************************************************************/ - - -/** - * When a context is bound for the first time, we can finally finish - * initializing the context's visual and buffer information. - * \param v the XMesaVisual to initialize - * \param b the XMesaBuffer to initialize (may be NULL) - * \param rgb_flag TRUE = RGBA mode, FALSE = color index mode - * \param window the window/pixmap we're rendering into - * \param cmap the colormap associated with the window/pixmap - * \return GL_TRUE=success, GL_FALSE=failure - */ -static GLboolean -initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b, - GLboolean rgb_flag, XMesaDrawable window, - XMesaColormap cmap) -{ -#ifdef XFree86Server - int client = (window) ? CLIENT_ID(window->id) : 0; -#endif - - ASSERT(!b || b->xm_visual == v); - - /* Save true bits/pixel */ - v->BitsPerPixel = bits_per_pixel(v); - assert(v->BitsPerPixel > 0); - - if (rgb_flag == GL_FALSE) { - /* COLOR-INDEXED WINDOW: not supported*/ - return GL_FALSE; - } - else { - /* RGB WINDOW: - * We support RGB rendering into almost any kind of visual. - */ - const int xclass = v->mesa_visual.visualType; - if (xclass != GLX_TRUE_COLOR && xclass == !GLX_DIRECT_COLOR) { - _mesa_warning(NULL, - "XMesa: RGB mode rendering not supported in given visual.\n"); - return GL_FALSE; - } - v->mesa_visual.indexBits = 0; - - if (v->BitsPerPixel == 32) { - /* We use XImages for all front/back buffers. If an X Window or - * X Pixmap is 32bpp, there's no guarantee that the alpha channel - * will be preserved. For XImages we're in luck. - */ - v->mesa_visual.alphaBits = 8; - } - } - - /* - * If MESA_INFO env var is set print out some debugging info - * which can help Brian figure out what's going on when a user - * reports bugs. - */ - if (_mesa_getenv("MESA_INFO")) { - _mesa_printf("X/Mesa visual = %p\n", (void *) v); - _mesa_printf("X/Mesa level = %d\n", v->mesa_visual.level); - _mesa_printf("X/Mesa depth = %d\n", GET_VISUAL_DEPTH(v)); - _mesa_printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel); - } - - if (b && window) { - /* these should have been set in create_xmesa_buffer */ - ASSERT(b->drawable == window); - - /* Setup for single/double buffering */ - if (v->mesa_visual.doubleBufferMode) { - /* Double buffered */ - b->shm = xmesa_check_for_xshm( v->display ); - } - - /* X11 graphics context */ -#ifdef XFree86Server - b->gc = CreateScratchGC(v->display, window->depth); -#else - b->gc = XCreateGC( v->display, window, 0, NULL ); -#endif - XMesaSetFunction( v->display, b->gc, GXcopy ); - } - - return GL_TRUE; -} - - - -#define NUM_VISUAL_TYPES 6 - -/** - * Convert an X visual type to a GLX visual type. - * - * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.) - * to be converted. - * \return If \c visualType is a valid X visual type, a GLX visual type will - * be returned. Otherwise \c GLX_NONE will be returned. - * - * \note - * This code was lifted directly from lib/GL/glx/glcontextmodes.c in the - * DRI CVS tree. - */ -static GLint -xmesa_convert_from_x_visual_type( int visualType ) -{ - static const int glx_visual_types[ NUM_VISUAL_TYPES ] = { - GLX_STATIC_GRAY, GLX_GRAY_SCALE, - GLX_STATIC_COLOR, GLX_PSEUDO_COLOR, - GLX_TRUE_COLOR, GLX_DIRECT_COLOR - }; - - return ( (unsigned) visualType < NUM_VISUAL_TYPES ) - ? glx_visual_types[ visualType ] : GLX_NONE; -} - - -/**********************************************************************/ -/***** Public Functions *****/ -/**********************************************************************/ - - -/* - * 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 - * Return; a new XMesaVisual or 0 if error. - */ -PUBLIC -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 ) -{ - XMesaVisual v; - GLint red_bits, green_bits, blue_bits, alpha_bits; - -#ifndef XFree86Server - /* For debugging only */ - if (_mesa_getenv("MESA_XSYNC")) { - /* This makes debugging X easier. - * In your debugger, set a breakpoint on _XError to stop when an - * X protocol error is generated. - */ - XSynchronize( display, 1 ); - } -#endif - - v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); - if (!v) { - return NULL; - } - - v->display = display; - - /* Save a copy of the XVisualInfo struct because the user may X_mesa_free() - * the struct but we may need some of the information contained in it - * at a later time. - */ -#ifndef XFree86Server - v->visinfo = (XVisualInfo *) MALLOC(sizeof(*visinfo)); - if(!v->visinfo) { - _mesa_free(v); - return NULL; - } - MEMCPY(v->visinfo, visinfo, sizeof(*visinfo)); -#endif - - v->ximage_flag = ximage_flag; - -#ifdef XFree86Server - /* We could calculate these values by ourselves. nplanes is either the sum - * of the red, green, and blue bits or the number index bits. - * ColormapEntries is either (1U << index_bits) or - * (1U << max(redBits, greenBits, blueBits)). - */ - assert(visinfo->nplanes > 0); - v->nplanes = visinfo->nplanes; - v->ColormapEntries = visinfo->ColormapEntries; - - v->mesa_visual.redMask = visinfo->redMask; - v->mesa_visual.greenMask = visinfo->greenMask; - v->mesa_visual.blueMask = visinfo->blueMask; - v->mesa_visual.visualID = visinfo->vid; - v->mesa_visual.screen = 0; /* FIXME: What should be done here? */ -#else - v->mesa_visual.redMask = visinfo->red_mask; - v->mesa_visual.greenMask = visinfo->green_mask; - v->mesa_visual.blueMask = visinfo->blue_mask; - v->mesa_visual.visualID = visinfo->visualid; - v->mesa_visual.screen = visinfo->screen; -#endif - -#if defined(XFree86Server) || !(defined(__cplusplus) || defined(c_plusplus)) - v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->class); -#else - v->mesa_visual.visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); -#endif - - v->mesa_visual.visualRating = visualCaveat; - - if (alpha_flag) - v->mesa_visual.alphaBits = 8; - - (void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 ); - - { - const int xclass = v->mesa_visual.visualType; - if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { - red_bits = _mesa_bitcount(GET_REDMASK(v)); - green_bits = _mesa_bitcount(GET_GREENMASK(v)); - blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); - } - else { - /* this is an approximation */ - int depth; - depth = GET_VISUAL_DEPTH(v); - red_bits = depth / 3; - depth -= red_bits; - green_bits = depth / 2; - depth -= green_bits; - blue_bits = depth; - alpha_bits = 0; - assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) ); - } - alpha_bits = v->mesa_visual.alphaBits; - } - - _mesa_initialize_visual( &v->mesa_visual, - rgb_flag, db_flag, stereo_flag, - red_bits, green_bits, - blue_bits, alpha_bits, - v->mesa_visual.indexBits, - depth_size, - stencil_size, - accum_red_size, accum_green_size, - accum_blue_size, accum_alpha_size, - 0 ); - - /* XXX minor hack */ - v->mesa_visual.level = level; - return v; -} - - -PUBLIC -void XMesaDestroyVisual( XMesaVisual v ) -{ -#ifndef XFree86Server - _mesa_free(v->visinfo); -#endif - _mesa_free(v); -} - - - -/** - * Create a new XMesaContext. - * \param v the XMesaVisual - * \param share_list another XMesaContext with which to share display - * lists or NULL if no sharing is wanted. - * \return an XMesaContext or NULL if error. - */ -PUBLIC -XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list ) -{ - static GLboolean firstTime = GL_TRUE; - struct pipe_context *pipe; - XMesaContext c; - GLcontext *mesaCtx; - uint pf; - - if (firstTime) { - pipe_mutex_init(_xmesa_lock); - firstTime = GL_FALSE; - } - - /* Note: the XMesaContext contains a Mesa GLcontext struct (inheritance) */ - c = (XMesaContext) CALLOC_STRUCT(xmesa_context); - if (!c) - return NULL; - - pf = choose_pixel_format(v); - assert(pf); - - c->xm_visual = v; - c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ - - if (!getenv("XM_AUB")) { - xmesa_mode = XMESA_SOFTPIPE; - pipe = xmesa_create_pipe_context( c, pf ); - } - else { - xmesa_mode = XMESA_AUB; - pipe = xmesa_create_i965simple(xmesa_get_pipe_winsys_aub(v)); - } - - if (pipe == NULL) - goto fail; - - c->st = st_create_context(pipe, &v->mesa_visual, - share_list ? share_list->st : NULL); - if (c->st == NULL) - goto fail; - - mesaCtx = c->st->ctx; - c->st->ctx->DriverCtx = c; - -#if 00 - _mesa_enable_sw_extensions(mesaCtx); - _mesa_enable_1_3_extensions(mesaCtx); - _mesa_enable_1_4_extensions(mesaCtx); - _mesa_enable_1_5_extensions(mesaCtx); - _mesa_enable_2_0_extensions(mesaCtx); -#endif - -#ifdef XFree86Server - /* If we're running in the X server, do bounds checking to prevent - * segfaults and server crashes! - */ - mesaCtx->Const.CheckArrayBounds = GL_TRUE; -#endif - - return c; - - fail: - if (c->st) - st_destroy_context(c->st); - else if (pipe) - pipe->destroy(pipe); - FREE(c); - return NULL; -} - - - -PUBLIC -void XMesaDestroyContext( XMesaContext c ) -{ - struct pipe_screen *screen = c->st->pipe->screen; - st_destroy_context(c->st); - /* FIXME: We should destroy the screen here, but if we do so, surfaces may - * outlive it, causing segfaults - screen->destroy(screen); - */ - _mesa_free(c); -} - - - -/** - * Private function for creating an XMesaBuffer which corresponds to an - * X window or pixmap. - * \param v the window's XMesaVisual - * \param w the window we're wrapping - * \return new XMesaBuffer or NULL if error - */ -PUBLIC XMesaBuffer -XMesaCreateWindowBuffer(XMesaVisual v, XMesaWindow w) -{ -#ifndef XFree86Server - XWindowAttributes attr; -#endif - XMesaBuffer b; - XMesaColormap cmap; - int depth; - - assert(v); - assert(w); - - /* Check that window depth matches visual depth */ -#ifdef XFree86Server - depth = ((XMesaDrawable)w)->depth; -#else - XGetWindowAttributes( v->display, w, &attr ); - depth = attr.depth; -#endif - if (GET_VISUAL_DEPTH(v) != depth) { - _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", - GET_VISUAL_DEPTH(v), depth); - return NULL; - } - - /* Find colormap */ -#ifdef XFree86Server - cmap = (ColormapPtr)LookupIDByType(wColormap(w), RT_COLORMAP); -#else - if (attr.colormap) { - cmap = attr.colormap; - } - else { - _mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w); - /* this is weird, a window w/out a colormap!? */ - /* OK, let's just allocate a new one and hope for the best */ - cmap = XCreateColormap(v->display, w, attr.visual, AllocNone); - } -#endif - - b = create_xmesa_buffer((XMesaDrawable) w, WINDOW, v, cmap); - if (!b) - return NULL; - - if (!initialize_visual_and_buffer( v, b, v->mesa_visual.rgbMode, - (XMesaDrawable) w, cmap )) { - xmesa_free_buffer(b); - return NULL; - } - - return b; -} - - - -/** - * Create a new XMesaBuffer from an X pixmap. - * - * \param v the XMesaVisual - * \param p the pixmap - * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or - * \c GLX_DIRECT_COLOR visual for the pixmap - * \returns new XMesaBuffer or NULL if error - */ -PUBLIC XMesaBuffer -XMesaCreatePixmapBuffer(XMesaVisual v, XMesaPixmap p, XMesaColormap cmap) -{ - XMesaBuffer b; - - assert(v); - - b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); - if (!b) - return NULL; - - if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, - (XMesaDrawable) p, cmap)) { - xmesa_free_buffer(b); - return NULL; - } - - return b; -} - - -/** - * For GLX_EXT_texture_from_pixmap - */ -XMesaBuffer -XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p, - XMesaColormap cmap, - int format, int target, int mipmap) -{ - GET_CURRENT_CONTEXT(ctx); - XMesaBuffer b; - GLuint width, height; - - assert(v); - - b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap); - if (!b) - return NULL; - - /* get pixmap size, update framebuffer/renderbuffer dims */ - xmesa_get_window_size(v->display, b, &width, &height); - _mesa_resize_framebuffer(NULL, &(b->stfb->Base), width, height); - - if (target == 0) { - /* examine dims */ - if (ctx->Extensions.ARB_texture_non_power_of_two) { - target = GLX_TEXTURE_2D_EXT; - } - else if ( _mesa_bitcount(width) == 1 - && _mesa_bitcount(height) == 1) { - /* power of two size */ - if (height == 1) { - target = GLX_TEXTURE_1D_EXT; - } - else { - target = GLX_TEXTURE_2D_EXT; - } - } - else if (ctx->Extensions.NV_texture_rectangle) { - target = GLX_TEXTURE_RECTANGLE_EXT; - } - else { - /* non power of two textures not supported */ - XMesaDestroyBuffer(b); - return 0; - } - } - - b->TextureTarget = target; - b->TextureFormat = format; - b->TextureMipmap = mipmap; - - if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, - (XMesaDrawable) p, cmap)) { - xmesa_free_buffer(b); - return NULL; - } - - return b; -} - - - -XMesaBuffer -XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap, - unsigned int width, unsigned int height) -{ -#ifndef XFree86Server - XMesaWindow root; - XMesaDrawable drawable; /* X Pixmap Drawable */ - XMesaBuffer b; - - /* allocate pixmap for front buffer */ - root = RootWindow( v->display, v->visinfo->screen ); - drawable = XCreatePixmap(v->display, root, width, height, - v->visinfo->depth); - if (!drawable) - return NULL; - - b = create_xmesa_buffer(drawable, PBUFFER, v, cmap); - if (!b) - return NULL; - - if (!initialize_visual_and_buffer(v, b, v->mesa_visual.rgbMode, - drawable, cmap)) { - xmesa_free_buffer(b); - return NULL; - } - - return b; -#else - return 0; -#endif -} - - - -/* - * Deallocate an XMesaBuffer structure and all related info. - */ -PUBLIC void -XMesaDestroyBuffer(XMesaBuffer b) -{ - xmesa_free_buffer(b); -} - - -/** - * Query the current window size and update the corresponding GLframebuffer - * and all attached renderbuffers. - * Called when: - * 1. the first time a buffer is bound to a context. - * 2. from the XMesaResizeBuffers() API function. - * 3. SwapBuffers. XXX probabaly from xm_flush_frontbuffer() too... - * Note: it's possible (and legal) for xmctx to be NULL. That can happen - * when resizing a buffer when no rendering context is bound. - */ -void -xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer) -{ - GLuint width, height; - xmesa_get_window_size(drawBuffer->xm_visual->display, drawBuffer, &width, &height); - st_resize_framebuffer(drawBuffer->stfb, width, height); -} - - -/* - * Bind buffer b to context c and make c the current rendering context. - */ -GLboolean XMesaMakeCurrent( XMesaContext c, XMesaBuffer b ) -{ - return XMesaMakeCurrent2( c, b, b ); -} - - -/* - * Bind buffer b to context c and make c the current rendering context. - */ -PUBLIC -GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, - XMesaBuffer readBuffer ) -{ - if (c) { - if (!drawBuffer || !readBuffer) - return GL_FALSE; /* must specify buffers! */ - -#if 0 - /* XXX restore this optimization */ - if (&(c->mesa) == _mesa_get_current_context() - && c->mesa.DrawBuffer == &drawBuffer->mesa_buffer - && c->mesa.ReadBuffer == &readBuffer->mesa_buffer - && xmesa_buffer(c->mesa.DrawBuffer)->wasCurrent) { - /* same context and buffer, do nothing */ - return GL_TRUE; - } -#endif - - c->xm_buffer = drawBuffer; - - /* Call this periodically to detect when the user has begun using - * GL rendering from multiple threads. - */ - _glapi_check_multithread(); - - st_make_current(c->st, drawBuffer->stfb, readBuffer->stfb); - - xmesa_check_and_update_buffer_size(c, drawBuffer); - if (readBuffer != drawBuffer) - xmesa_check_and_update_buffer_size(c, readBuffer); - - /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ - drawBuffer->wasCurrent = GL_TRUE; - } - else { - /* Detach */ - st_make_current( NULL, NULL, NULL ); - } - return GL_TRUE; -} - - -/* - * Unbind the context c from its buffer. - */ -GLboolean XMesaUnbindContext( XMesaContext c ) -{ - /* A no-op for XFree86 integration purposes */ - return GL_TRUE; -} - - -XMesaContext XMesaGetCurrentContext( void ) -{ - GET_CURRENT_CONTEXT(ctx); - if (ctx) { - XMesaContext xmesa = xmesa_context(ctx); - return xmesa; - } - else { - return 0; - } -} - - -XMesaBuffer XMesaGetCurrentBuffer( void ) -{ - GET_CURRENT_CONTEXT(ctx); - if (ctx) { - XMesaBuffer xmbuf = xmesa_buffer(ctx->DrawBuffer); - return xmbuf; - } - else { - return 0; - } -} - - -/* New in Mesa 3.1 */ -XMesaBuffer XMesaGetCurrentReadBuffer( void ) -{ - GET_CURRENT_CONTEXT(ctx); - if (ctx) { - return xmesa_buffer(ctx->ReadBuffer); - } - else { - return 0; - } -} - - -#ifdef XFree86Server -PUBLIC -GLboolean XMesaForceCurrent(XMesaContext c) -{ - if (c) { - _glapi_set_dispatch(c->mesa.CurrentDispatch); - - if (&(c->mesa) != _mesa_get_current_context()) { - _mesa_make_current(&c->mesa, c->mesa.DrawBuffer, c->mesa.ReadBuffer); - } - } - else { - _mesa_make_current(NULL, NULL, NULL); - } - return GL_TRUE; -} - - -PUBLIC -GLboolean XMesaLoseCurrent(XMesaContext c) -{ - (void) c; - _mesa_make_current(NULL, NULL, NULL); - return GL_TRUE; -} - - -PUBLIC -GLboolean XMesaCopyContext( XMesaContext xm_src, XMesaContext xm_dst, GLuint mask ) -{ - _mesa_copy_context(&xm_src->mesa, &xm_dst->mesa, mask); - return GL_TRUE; -} -#endif /* XFree86Server */ - - -#ifndef FX -GLboolean XMesaSetFXmode( GLint mode ) -{ - (void) mode; - return GL_FALSE; -} -#endif - - - -/* - * Copy the back buffer to the front buffer. If there's no back buffer - * this is a no-op. - */ -PUBLIC -void XMesaSwapBuffers( XMesaBuffer b ) -{ - struct pipe_surface *surf; - - /* If we're swapping the buffer associated with the current context - * we have to flush any pending rendering commands first. - */ - st_notify_swapbuffers(b->stfb); - - surf = st_get_framebuffer_surface(b->stfb, ST_SURFACE_BACK_LEFT); - if (surf) { - if (xmesa_mode == XMESA_AUB) - xmesa_display_aub( surf ); - else - xmesa_display_surface(b, surf); - } - - xmesa_check_and_update_buffer_size(NULL, b); -} - - - -/* - * Copy sub-region of back buffer to front buffer - */ -void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) -{ - struct pipe_surface *surf_front - = st_get_framebuffer_surface(b->stfb, ST_SURFACE_FRONT_LEFT); - struct pipe_surface *surf_back - = st_get_framebuffer_surface(b->stfb, ST_SURFACE_BACK_LEFT); - struct pipe_context *pipe = NULL; /* XXX fix */ - - if (!surf_front || !surf_back) - return; - - pipe->surface_copy(pipe, - FALSE, - surf_front, x, y, /* dest */ - surf_back, x, y, /* src */ - width, height); -} - - - -/* - * 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. - */ -GLboolean XMesaGetDepthBuffer( XMesaBuffer b, GLint *width, GLint *height, - GLint *bytesPerValue, void **buffer ) -{ - *width = 0; - *height = 0; - *bytesPerValue = 0; - *buffer = 0; - return GL_FALSE; -} - - -void XMesaFlush( XMesaContext c ) -{ - if (c && c->xm_visual->display) { -#ifdef XFree86Server - /* NOT_NEEDED */ -#else - st_finish(c->st); - XSync( c->xm_visual->display, False ); -#endif - } -} - - - -const char *XMesaGetString( XMesaContext c, int name ) -{ - (void) c; - if (name==XMESA_VERSION) { - return "5.0"; - } - else if (name==XMESA_EXTENSIONS) { - return ""; - } - else { - return NULL; - } -} - - - -XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, XMesaDrawable d ) -{ - XMesaBuffer b; - for (b=XMesaBufferList; b; b=b->Next) { - if (b->drawable == d && b->xm_visual->display == dpy) { - return b; - } - } - return NULL; -} - - -/** - * Free/destroy all XMesaBuffers associated with given display. - */ -void xmesa_destroy_buffers_on_display(XMesaDisplay *dpy) -{ - XMesaBuffer b, next; - for (b = XMesaBufferList; b; b = next) { - next = b->Next; - if (b->xm_visual->display == dpy) { - xmesa_free_buffer(b); - } - } -} - - -/* - * Look for XMesaBuffers whose X window has been destroyed. - * Deallocate any such XMesaBuffers. - */ -void XMesaGarbageCollect( void ) -{ - XMesaBuffer b, next; - for (b=XMesaBufferList; b; b=next) { - next = b->Next; - if (b->xm_visual && - b->xm_visual->display && - b->drawable && - b->type == WINDOW) { -#ifdef XFree86Server - /* NOT_NEEDED */ -#else - XSync(b->xm_visual->display, False); - if (!window_exists( b->xm_visual->display, b->drawable )) { - /* found a dead window, free the ancillary info */ - XMesaDestroyBuffer( b ); - } -#endif - } - } -} - - -unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y, - GLfloat red, GLfloat green, - GLfloat blue, GLfloat alpha ) -{ - /* no longer supported */ - return 0; -} - - -/* - * This is typically called when the window size changes and we need - * to reallocate the buffer's back/depth/stencil/accum buffers. - */ -PUBLIC void -XMesaResizeBuffers( XMesaBuffer b ) -{ - GET_CURRENT_CONTEXT(ctx); - XMesaContext xmctx = xmesa_context(ctx); - if (!xmctx) - return; - xmesa_check_and_update_buffer_size(xmctx, b); -} - - - - -PUBLIC void -XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer, - const int *attrib_list) -{ -} - - - -PUBLIC void -XMesaReleaseTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer) -{ -} - |