diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/x11/xm_api.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/x11/xm_api.c | 2675 |
1 files changed, 0 insertions, 2675 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/x11/xm_api.c b/nx-X11/extras/Mesa/src/mesa/drivers/x11/xm_api.c deleted file mode 100644 index 6ed2be564..000000000 --- a/nx-X11/extras/Mesa/src/mesa/drivers/x11/xm_api.c +++ /dev/null @@ -1,2675 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 6.3 - * - * Copyright (C) 1999-2005 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. - */ - -/* - * This file contains the implementations of all the XMesa* 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. In - * Mesa, when byte swapping is needed we use the PF_TRUECOLOR pixel format - * and use XPutPixel everywhere except in the implementation of - * glClear(GL_COLOR_BUFFER_BIT). We want this function to be fast so - * instead of using XPutPixel we "poke" our values after byte-swapping - * the clear pixel value if needed. - * - */ - -#ifdef __CYGWIN__ -#undef WIN32 -#undef __WIN32__ -#endif - -#include "glxheader.h" -#include "GL/xmesa.h" -#include "xmesaP.h" -#include "context.h" -#include "extensions.h" -#include "framebuffer.h" -#include "glthread.h" -#include "imports.h" -#include "matrix.h" -#include "mtypes.h" -#include "macros.h" -#include "renderbuffer.h" -#include "texformat.h" -#include "texobj.h" -#include "texstore.h" -#include "swrast/swrast.h" -#include "swrast_setup/swrast_setup.h" -#include "array_cache/acache.h" -#include "tnl/tnl.h" -#include "tnl/t_context.h" -#include "tnl/t_pipeline.h" -#include "drivers/common/driverfuncs.h" - -#ifdef XFree86Server -#include <GL/glxtokens.h> -#endif - -/* - * Global X driver lock - */ -_glthread_Mutex _xmesa_lock; - - - -/* - * Lookup tables for HPCR pixel format: - */ -static short hpcr_rgbTbl[3][256] = { -{ - 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, - 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, - 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, - 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, -112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, -128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, -144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, -160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, -176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, -192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, -208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, -224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 -}, -{ - 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, - 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, - 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, - 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, -112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, -128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, -144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, -160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, -176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, -192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, -208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, -224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239 -}, -{ - 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39, - 40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47, - 48, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55, - 56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63, - 64, 64, 65, 65, 66, 66, 67, 67, 68, 68, 69, 69, 70, 70, 71, 71, - 72, 72, 73, 73, 74, 74, 75, 75, 76, 76, 77, 77, 78, 78, 79, 79, - 80, 80, 81, 81, 82, 82, 83, 83, 84, 84, 85, 85, 86, 86, 87, 87, - 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, -112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, -128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, -144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, -160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, -176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, -192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, -208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223 -} -}; - - - -/**********************************************************************/ -/***** 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 - - -/* - * Error handling. - */ -#ifndef XFree86Server -static volatile int mesaXErrorFlag = 0; - -static int mesaHandleXError( XMesaDisplay *dpy, XErrorEvent *event ) -{ - (void) dpy; - (void) event; - mesaXErrorFlag = 1; - return 0; -} -#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 - */ -#ifndef XFree86Server -static int check_for_xshm( XMesaDisplay *display ) -{ -#ifdef USE_XSHM - int major, minor, ignore; - Bool pixmaps; - - 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 - /* Can't compile XSHM support */ - return 0; -#endif -} -#endif - - -/* - * Apply gamma correction to an intensity value in [0..max]. Return the - * new intensity value. - */ -static GLint gamma_adjust( GLfloat gamma, GLint value, GLint max ) -{ - if (gamma == 1.0) { - return value; - } - else { - double x = (double) value / (double) max; - return IROUND_POS((GLfloat) max * _mesa_pow(x, 1.0F/gamma)); - } -} - - - -/* - * 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 - */ -#ifdef XFree86Server - -static int bits_per_pixel( XMesaVisual xmv ) -{ - const int depth = xmv->nplanes; - int i; - 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 - -static int bits_per_pixel( XMesaVisual xmv ) -{ - 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; -} -#endif - - - -/**********************************************************************/ -/***** Linked list of XMesaBuffers *****/ -/**********************************************************************/ - -static XMesaBuffer XMesaBufferList = NULL; - - -/** - * Allocate a new XMesaBuffer, initialize basic fields and add to - * the list of all buffers. - */ -static XMesaBuffer -alloc_xmesa_buffer(XMesaVisual vis, BufferType type, XMesaColormap cmap) -{ - XMesaBuffer b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer); - if (b) { - GLboolean swAlpha; - - b->display = vis->display; - b->xm_visual = vis; - b->type = type; - b->cmap = cmap; - - _mesa_initialize_framebuffer(&b->mesa_buffer, &vis->mesa_visual); - - /* determine back buffer implementation */ - if (vis->mesa_visual.doubleBufferMode) { - if (vis->ximage_flag) { - b->db_state = BACK_XIMAGE; - } - else { - b->db_state = BACK_PIXMAP; - } - } - else { - b->db_state = 0; - } - - /* Allocate the framebuffer's renderbuffers */ - assert(!b->mesa_buffer.Attachment[BUFFER_FRONT_LEFT].Renderbuffer); - assert(!b->mesa_buffer.Attachment[BUFFER_BACK_LEFT].Renderbuffer); - - /* front renderbuffer */ - b->frontxrb = xmesa_new_renderbuffer(NULL, 0, vis->mesa_visual.rgbMode); - _mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_FRONT_LEFT, - &b->frontxrb->Base); - - /* back renderbuffer */ - if (vis->mesa_visual.doubleBufferMode) { - b->backxrb =xmesa_new_renderbuffer(NULL, 0, vis->mesa_visual.rgbMode); - _mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_BACK_LEFT, - &b->backxrb->Base); - } - - /* determine if we need software alpha planes */ - if (vis->mesa_visual.alphaBits > 0 - && vis->undithered_pf != PF_8A8B8G8R - && vis->undithered_pf != PF_8A8R8G8B) { - /* Visual has alpha, but pixel format doesn't support it. - * We'll use an alpha renderbuffer wrapper. - */ - swAlpha = GL_TRUE; - } - else { - swAlpha = GL_FALSE; - } - - _mesa_add_soft_renderbuffers(&b->mesa_buffer, - GL_FALSE, /* color */ - vis->mesa_visual.haveDepthBuffer, - vis->mesa_visual.haveStencilBuffer, - vis->mesa_visual.haveAccumBuffer, - swAlpha, - vis->mesa_visual.numAuxBuffers > 0 ); - - /* insert 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. - */ -static XMesaBuffer find_xmesa_buffer(XMesaDisplay *dpy, - XMesaColormap cmap, - XMesaBuffer notThis) -{ - XMesaBuffer b; - for (b=XMesaBufferList; b; b=b->Next) { - if (b->display==dpy && b->cmap==cmap && b!=notThis) { - return b; - } - } - return NULL; -} - - -/* - * Free an XMesaBuffer, remove from linked list, perhaps free X colormap - * entries. - */ -static void free_xmesa_buffer(int client, XMesaBuffer buffer) -{ - XMesaBuffer prev = NULL, b; - (void) client; - for (b=XMesaBufferList; b; b=b->Next) { - if (b==buffer) { - /* unlink bufer from list */ - if (prev) - prev->Next = buffer->Next; - else - XMesaBufferList = buffer->Next; - /* Check to free X colors */ - if (buffer->num_alloced>0) { - /* If no other buffer uses this X colormap then free the colors. */ - if (!find_xmesa_buffer(buffer->display, buffer->cmap, buffer)) { -#ifdef XFree86Server - (void)FreeColors(buffer->cmap, client, - buffer->num_alloced, buffer->alloced_colors, - 0); -#else - XFreeColors(buffer->display, buffer->cmap, - buffer->alloced_colors, buffer->num_alloced, 0); -#endif - } - } - - _mesa_free_framebuffer_data(&buffer->mesa_buffer); - _mesa_free(buffer); - - return; - } - /* continue search */ - prev = b; - } - /* buffer not found in XMesaBufferList */ - _mesa_problem(NULL,"free_xmesa_buffer() - buffer not found\n"); -} - - -/* Copy X color table stuff from one XMesaBuffer to another. */ -static void copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src) -{ - MEMCPY(dst->color_table, src->color_table, sizeof(src->color_table)); - MEMCPY(dst->pixel_to_r, src->pixel_to_r, sizeof(src->pixel_to_r)); - MEMCPY(dst->pixel_to_g, src->pixel_to_g, sizeof(src->pixel_to_g)); - MEMCPY(dst->pixel_to_b, src->pixel_to_b, sizeof(src->pixel_to_b)); - dst->num_alloced = src->num_alloced; - MEMCPY(dst->alloced_colors, src->alloced_colors, - sizeof(src->alloced_colors)); -} - - - -/**********************************************************************/ -/***** Misc Private Functions *****/ -/**********************************************************************/ - - -/* - * Return number of bits set in n. - */ -static int bitcount( unsigned long n ) -{ - int bits; - for (bits=0; n>0; n=n>>1) { - if (n&1) { - bits++; - } - } - return bits; -} - - - -/** - * Allocate a shared memory XImage back buffer for the given XMesaBuffer. - * Return: GL_TRUE if success, GL_FALSE if error - */ -#ifndef XFree86Server -static GLboolean -alloc_shm_back_buffer(XMesaBuffer b, GLuint width, GLuint height) -{ -#ifdef USE_XSHM - /* - * We have to do a _lot_ of error checking here to be sure we can - * really use the XSHM extension. It seems different servers trigger - * errors at different points if the extension won't work. Therefore - * we have to be very careful... - */ - GC gc; - int (*old_handler)( XMesaDisplay *, XErrorEvent * ); - - if (width == 0 || height == 0) { - /* this will be true the first time we're called on 'b' */ - return GL_FALSE; - } - - b->backxrb->ximage = XShmCreateImage(b->xm_visual->display, - b->xm_visual->visinfo->visual, - b->xm_visual->visinfo->depth, - ZPixmap, NULL, &b->shminfo, - width, height); - if (b->backxrb->ximage == NULL) { - _mesa_warning(NULL, "alloc_back_buffer: Shared memory error (XShmCreateImage), disabling."); - b->shm = 0; - return GL_FALSE; - } - - b->shminfo.shmid = shmget( IPC_PRIVATE, b->backxrb->ximage->bytes_per_line - * b->backxrb->ximage->height, IPC_CREAT|0777 ); - if (b->shminfo.shmid < 0) { - _mesa_warning(NULL, "shmget failed while allocating back buffer"); - XDestroyImage( b->backxrb->ximage ); - b->backxrb->ximage = NULL; - _mesa_warning(NULL, "alloc_back_buffer: Shared memory error (shmget), disabling."); - b->shm = 0; - return GL_FALSE; - } - - b->shminfo.shmaddr = b->backxrb->ximage->data - = (char*)shmat( b->shminfo.shmid, 0, 0 ); - if (b->shminfo.shmaddr == (char *) -1) { - _mesa_warning(NULL, "shmat() failed while allocating back buffer"); - XDestroyImage( b->backxrb->ximage ); - shmctl( b->shminfo.shmid, IPC_RMID, 0 ); - b->backxrb->ximage = NULL; - _mesa_warning(NULL, "alloc_back_buffer: Shared memory error (shmat), disabling."); - b->shm = 0; - return GL_FALSE; - } - - b->shminfo.readOnly = False; - mesaXErrorFlag = 0; - old_handler = XSetErrorHandler( mesaHandleXError ); - /* This may trigger the X protocol error we're ready to catch: */ - XShmAttach( b->xm_visual->display, &b->shminfo ); - XSync( b->xm_visual->display, False ); - - if (mesaXErrorFlag) { - /* we are on a remote display, this error is normal, don't print it */ - XFlush( b->xm_visual->display ); - mesaXErrorFlag = 0; - XDestroyImage( b->backxrb->ximage ); - shmdt( b->shminfo.shmaddr ); - shmctl( b->shminfo.shmid, IPC_RMID, 0 ); - b->backxrb->ximage = NULL; - b->shm = 0; - (void) XSetErrorHandler( old_handler ); - return GL_FALSE; - } - - shmctl( b->shminfo.shmid, IPC_RMID, 0 ); /* nobody else needs it */ - - /* Finally, try an XShmPutImage to be really sure the extension works */ - gc = XCreateGC( b->xm_visual->display, b->frontxrb->drawable, 0, NULL ); - XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, gc, - b->backxrb->ximage, 0, 0, 0, 0, 1, 1 /*one pixel*/, False ); - XSync( b->xm_visual->display, False ); - XFreeGC( b->xm_visual->display, gc ); - (void) XSetErrorHandler( old_handler ); - if (mesaXErrorFlag) { - XFlush( b->xm_visual->display ); - mesaXErrorFlag = 0; - XDestroyImage( b->backxrb->ximage ); - shmdt( b->shminfo.shmaddr ); - shmctl( b->shminfo.shmid, IPC_RMID, 0 ); - b->backxrb->ximage = NULL; - b->shm = 0; - return GL_FALSE; - } - - return GL_TRUE; -#else - /* Can't compile XSHM support */ - return GL_FALSE; -#endif -} -#endif - - - - -/* - * Setup an off-screen pixmap or Ximage to use as the back buffer. - * Input: b - the X/Mesa buffer - */ -void -xmesa_alloc_back_buffer( XMesaBuffer b, GLuint width, GLuint height ) -{ - if (width == 0 || height == 0) - return; - - if (b->db_state == BACK_XIMAGE) { - /* Deallocate the old backxrb->ximage, if any */ - if (b->backxrb->ximage) { -#if defined(USE_XSHM) && !defined(XFree86Server) - if (b->shm) { - XShmDetach( b->xm_visual->display, &b->shminfo ); - XDestroyImage( b->backxrb->ximage ); - shmdt( b->shminfo.shmaddr ); - } - else -#endif - XMesaDestroyImage( b->backxrb->ximage ); - b->backxrb->ximage = NULL; - } - - /* Allocate new back buffer */ -#ifdef XFree86Server - { - /* Allocate a regular XImage for the back buffer. */ - b->backxrb->ximage = XMesaCreateImage(b->xm_visual->BitsPerPixel, - width, height, NULL); -#else - if (b->shm == 0 || !alloc_shm_back_buffer(b, width, height)) { - /* Allocate a regular XImage for the back buffer. */ - b->backxrb->ximage = XCreateImage( b->xm_visual->display, - b->xm_visual->visinfo->visual, - GET_VISUAL_DEPTH(b->xm_visual), - ZPixmap, 0, /* format, offset */ - NULL, - width, height, - 8, 0 ); /* pad, bytes_per_line */ -#endif - if (!b->backxrb->ximage) { - _mesa_warning(NULL, "alloc_back_buffer: XCreateImage failed."); - } - b->backxrb->ximage->data = (char *) MALLOC( b->backxrb->ximage->height - * b->backxrb->ximage->bytes_per_line ); - if (!b->backxrb->ximage->data) { - _mesa_warning(NULL, "alloc_back_buffer: MALLOC failed."); - XMesaDestroyImage( b->backxrb->ximage ); - b->backxrb->ximage = NULL; - } - /* this call just updates the width/origin fields in the xrb */ - b->backxrb->Base.AllocStorage(NULL, &b->backxrb->Base, - b->backxrb->Base.InternalFormat, - b->backxrb->ximage->width, - b->backxrb->ximage->height); - } - b->backxrb->pixmap = None; - } - else if (b->db_state==BACK_PIXMAP) { - if (!width) - width = 1; - if (!height) - height = 1; - - /* Free the old back pixmap */ - if (b->backxrb->pixmap) { - XMesaFreePixmap( b->xm_visual->display, b->backxrb->pixmap ); - } - /* Allocate new back pixmap */ - b->backxrb->pixmap = XMesaCreatePixmap( b->xm_visual->display, - b->frontxrb->drawable, - width, height, - GET_VISUAL_DEPTH(b->xm_visual) ); - b->backxrb->ximage = NULL; - } -} - - - -/* - * A replacement for XAllocColor. This function should never - * fail to allocate a color. When XAllocColor fails, we return - * the nearest matching color. If we have to allocate many colors - * this function isn't too efficient; the XQueryColors() could be - * done just once. - * Written by Michael Pichler, Brian Paul, Mark Kilgard - * Input: dpy - X display - * cmap - X colormap - * cmapSize - size of colormap - * In/Out: color - the XColor struct - * Output: exact - 1=exact color match, 0=closest match - * alloced - 1=XAlloc worked, 0=XAlloc failed - */ -static void -noFaultXAllocColor( int client, - XMesaDisplay *dpy, - XMesaColormap cmap, - int cmapSize, - XMesaColor *color, - int *exact, int *alloced ) -{ -#ifdef XFree86Server - Pixel *ppixIn; - xrgb *ctable; -#else - /* we'll try to cache ctable for better remote display performance */ - static Display *prevDisplay = NULL; - static XMesaColormap prevCmap = 0; - static int prevCmapSize = 0; - static XMesaColor *ctable = NULL; -#endif - XMesaColor subColor; - int i, bestmatch; - double mindist; /* 3*2^16^2 exceeds long int precision. */ - - (void) client; - - /* First try just using XAllocColor. */ -#ifdef XFree86Server - if (AllocColor(cmap, - &color->red, &color->green, &color->blue, - &color->pixel, - client) == Success) { -#else - if (XAllocColor(dpy, cmap, color)) { -#endif - *exact = 1; - *alloced = 1; - return; - } - - /* Alloc failed, search for closest match */ - - /* Retrieve color table entries. */ - /* XXX alloca candidate. */ -#ifdef XFree86Server - ppixIn = (Pixel *) MALLOC(cmapSize * sizeof(Pixel)); - ctable = (xrgb *) MALLOC(cmapSize * sizeof(xrgb)); - for (i = 0; i < cmapSize; i++) { - ppixIn[i] = i; - } - QueryColors(cmap, cmapSize, ppixIn, ctable); -#else - if (prevDisplay != dpy || prevCmap != cmap - || prevCmapSize != cmapSize || !ctable) { - /* free previously cached color table */ - if (ctable) - _mesa_free(ctable); - /* Get the color table from X */ - ctable = (XMesaColor *) MALLOC(cmapSize * sizeof(XMesaColor)); - assert(ctable); - for (i = 0; i < cmapSize; i++) { - ctable[i].pixel = i; - } - XQueryColors(dpy, cmap, ctable, cmapSize); - prevDisplay = dpy; - prevCmap = cmap; - prevCmapSize = cmapSize; - } -#endif - - /* Find best match. */ - bestmatch = -1; - mindist = 0.0; - for (i = 0; i < cmapSize; i++) { - double dr = 0.30 * ((double) color->red - (double) ctable[i].red); - double dg = 0.59 * ((double) color->green - (double) ctable[i].green); - double db = 0.11 * ((double) color->blue - (double) ctable[i].blue); - double dist = dr * dr + dg * dg + db * db; - if (bestmatch < 0 || dist < mindist) { - bestmatch = i; - mindist = dist; - } - } - - /* Return result. */ - subColor.red = ctable[bestmatch].red; - subColor.green = ctable[bestmatch].green; - subColor.blue = ctable[bestmatch].blue; - /* Try to allocate the closest match color. This should only - * fail if the cell is read/write. Otherwise, we're incrementing - * the cell's reference count. - */ -#ifdef XFree86Server - if (AllocColor(cmap, - &subColor.red, &subColor.green, &subColor.blue, - &subColor.pixel, - client) == Success) { -#else - if (XAllocColor(dpy, cmap, &subColor)) { -#endif - *alloced = 1; - } - else { - /* do this to work around a problem reported by Frank Ortega */ - subColor.pixel = (unsigned long) bestmatch; - subColor.red = ctable[bestmatch].red; - subColor.green = ctable[bestmatch].green; - subColor.blue = ctable[bestmatch].blue; - subColor.flags = DoRed | DoGreen | DoBlue; - *alloced = 0; - } -#ifdef XFree86Server - _mesa_free(ppixIn); - _mesa_free(ctable); -#else - /* don't free table, save it for next time */ -#endif - - *color = subColor; - *exact = 0; -} - - - - -/* - * Do setup for PF_GRAYSCALE pixel format. - * Note that buffer may be NULL. - */ -static GLboolean setup_grayscale( int client, XMesaVisual v, - XMesaBuffer buffer, XMesaColormap cmap ) -{ - if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { - return GL_FALSE; - } - - if (buffer) { - XMesaBuffer prevBuffer; - - if (!cmap) { - return GL_FALSE; - } - - prevBuffer = find_xmesa_buffer(v->display, cmap, buffer); - if (prevBuffer && - (buffer->xm_visual->mesa_visual.rgbMode == - prevBuffer->xm_visual->mesa_visual.rgbMode)) { - /* Copy colormap stuff from previous XMesaBuffer which uses same - * X colormap. Do this to avoid time spent in noFaultXAllocColor. - */ - copy_colortable_info(buffer, prevBuffer); - } - else { - /* Allocate 256 shades of gray */ - int gray; - int colorsfailed = 0; - for (gray=0;gray<256;gray++) { - GLint r = gamma_adjust( v->RedGamma, gray, 255 ); - GLint g = gamma_adjust( v->GreenGamma, gray, 255 ); - GLint b = gamma_adjust( v->BlueGamma, gray, 255 ); - int exact, alloced; - XMesaColor xcol; - xcol.red = (r << 8) | r; - xcol.green = (g << 8) | g; - xcol.blue = (b << 8) | b; - noFaultXAllocColor( client, v->display, - cmap, GET_COLORMAP_SIZE(v), - &xcol, &exact, &alloced ); - if (!exact) { - colorsfailed++; - } - if (alloced) { - assert(buffer->num_alloced<256); - buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; - buffer->num_alloced++; - } - - /*OLD - assert(gray < 576); - buffer->color_table[gray*3+0] = xcol.pixel; - buffer->color_table[gray*3+1] = xcol.pixel; - buffer->color_table[gray*3+2] = xcol.pixel; - assert(xcol.pixel < 65536); - buffer->pixel_to_r[xcol.pixel] = gray * 30 / 100; - buffer->pixel_to_g[xcol.pixel] = gray * 59 / 100; - buffer->pixel_to_b[xcol.pixel] = gray * 11 / 100; - */ - buffer->color_table[gray] = xcol.pixel; - assert(xcol.pixel < 65536); - buffer->pixel_to_r[xcol.pixel] = gray; - buffer->pixel_to_g[xcol.pixel] = gray; - buffer->pixel_to_b[xcol.pixel] = gray; - } - - if (colorsfailed && _mesa_getenv("MESA_DEBUG")) { - _mesa_warning(NULL, - "Note: %d out of 256 needed colors do not match exactly.\n", - colorsfailed ); - } - } - } - - v->dithered_pf = PF_Grayscale; - v->undithered_pf = PF_Grayscale; - return GL_TRUE; -} - - - -/* - * Setup RGB rendering for a window with a PseudoColor, StaticColor, - * or 8-bit TrueColor visual visual. We try to allocate a palette of 225 - * colors (5 red, 9 green, 5 blue) and dither to approximate a 24-bit RGB - * color. While this function was originally designed just for 8-bit - * visuals, it has also proven to work from 4-bit up to 16-bit visuals. - * Dithering code contributed by Bob Mercier. - */ -static GLboolean setup_dithered_color( int client, XMesaVisual v, - XMesaBuffer buffer, XMesaColormap cmap ) -{ - if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) { - return GL_FALSE; - } - - if (buffer) { - XMesaBuffer prevBuffer; - - if (!cmap) { - return GL_FALSE; - } - - prevBuffer = find_xmesa_buffer(v->display, cmap, buffer); - if (prevBuffer && - (buffer->xm_visual->mesa_visual.rgbMode == - prevBuffer->xm_visual->mesa_visual.rgbMode)) { - /* Copy colormap stuff from previous, matching XMesaBuffer. - * Do this to avoid time spent in noFaultXAllocColor. - */ - copy_colortable_info(buffer, prevBuffer); - } - else { - /* Allocate X colors and initialize color_table[], red_table[], etc */ - int r, g, b, i; - int colorsfailed = 0; - for (r = 0; r < DITH_R; r++) { - for (g = 0; g < DITH_G; g++) { - for (b = 0; b < DITH_B; b++) { - XMesaColor xcol; - int exact, alloced; - xcol.red =gamma_adjust(v->RedGamma, r*65535/(DITH_R-1),65535); - xcol.green=gamma_adjust(v->GreenGamma, g*65535/(DITH_G-1),65535); - xcol.blue =gamma_adjust(v->BlueGamma, b*65535/(DITH_B-1),65535); - noFaultXAllocColor( client, v->display, - cmap, GET_COLORMAP_SIZE(v), - &xcol, &exact, &alloced ); - if (!exact) { - colorsfailed++; - } - if (alloced) { - assert(buffer->num_alloced<256); - buffer->alloced_colors[buffer->num_alloced] = xcol.pixel; - buffer->num_alloced++; - } - i = DITH_MIX( r, g, b ); - assert(i < 576); - buffer->color_table[i] = xcol.pixel; - assert(xcol.pixel < 65536); - buffer->pixel_to_r[xcol.pixel] = r * 255 / (DITH_R-1); - buffer->pixel_to_g[xcol.pixel] = g * 255 / (DITH_G-1); - buffer->pixel_to_b[xcol.pixel] = b * 255 / (DITH_B-1); - } - } - } - - if (colorsfailed && _mesa_getenv("MESA_DEBUG")) { - _mesa_warning(NULL, - "Note: %d out of %d needed colors do not match exactly.\n", - colorsfailed, DITH_R * DITH_G * DITH_B ); - } - } - } - - v->dithered_pf = PF_Dither; - v->undithered_pf = PF_Lookup; - return GL_TRUE; -} - - -/* - * Setup for Hewlett Packard Color Recovery 8-bit TrueColor mode. - * HPCR simulates 24-bit color fidelity with an 8-bit frame buffer. - * Special dithering tables have to be initialized. - */ -static void setup_8bit_hpcr( XMesaVisual v ) -{ - /* HP Color Recovery contributed by: Alex De Bruyn (ad@lms.be) - * To work properly, the atom _HP_RGB_SMOOTH_MAP_LIST must be defined - * on the root window AND the colormap obtainable by XGetRGBColormaps - * for that atom must be set on the window. (see also tkInitWindow) - * If that colormap is not set, the output will look stripy. - */ - - /* Setup color tables with gamma correction */ - int i; - double g; - - g = 1.0 / v->RedGamma; - for (i=0; i<256; i++) { - GLint red = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[0][i]/255.0, g )); - v->hpcr_rgbTbl[0][i] = CLAMP( red, 16, 239 ); - } - - g = 1.0 / v->GreenGamma; - for (i=0; i<256; i++) { - GLint green = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[1][i]/255.0, g )); - v->hpcr_rgbTbl[1][i] = CLAMP( green, 16, 239 ); - } - - g = 1.0 / v->BlueGamma; - for (i=0; i<256; i++) { - GLint blue = IROUND_POS(255.0 * _mesa_pow( hpcr_rgbTbl[2][i]/255.0, g )); - v->hpcr_rgbTbl[2][i] = CLAMP( blue, 32, 223 ); - } - v->undithered_pf = PF_HPCR; /* can't really disable dithering for now */ - v->dithered_pf = PF_HPCR; - - /* which method should I use to clear */ - /* GL_FALSE: keep the ordinary method */ - /* GL_TRUE : clear with dither pattern */ - v->hpcr_clear_flag = _mesa_getenv("MESA_HPCR_CLEAR") ? GL_TRUE : GL_FALSE; - - if (v->hpcr_clear_flag) { - v->hpcr_clear_pixmap = XMesaCreatePixmap(v->display, - DefaultRootWindow(v->display), - 16, 2, 8); -#ifndef XFree86Server - v->hpcr_clear_ximage = XGetImage(v->display, v->hpcr_clear_pixmap, - 0, 0, 16, 2, AllPlanes, ZPixmap); -#endif - } -} - - -/* - * Setup RGB rendering for a window with a True/DirectColor visual. - */ -static void setup_truecolor( XMesaVisual v, XMesaBuffer buffer, - XMesaColormap cmap ) -{ - unsigned long rmask, gmask, bmask; - (void) buffer; - (void) cmap; - - /* Compute red multiplier (mask) and bit shift */ - v->rshift = 0; - rmask = GET_REDMASK(v); - while ((rmask & 1)==0) { - v->rshift++; - rmask = rmask >> 1; - } - - /* Compute green multiplier (mask) and bit shift */ - v->gshift = 0; - gmask = GET_GREENMASK(v); - while ((gmask & 1)==0) { - v->gshift++; - gmask = gmask >> 1; - } - - /* Compute blue multiplier (mask) and bit shift */ - v->bshift = 0; - bmask = GET_BLUEMASK(v); - while ((bmask & 1)==0) { - v->bshift++; - bmask = bmask >> 1; - } - - /* - * Compute component-to-pixel lookup tables and dithering kernel - */ - { - static GLubyte kernel[16] = { - 0*16, 8*16, 2*16, 10*16, - 12*16, 4*16, 14*16, 6*16, - 3*16, 11*16, 1*16, 9*16, - 15*16, 7*16, 13*16, 5*16, - }; - GLint rBits = bitcount(rmask); - GLint gBits = bitcount(gmask); - GLint bBits = bitcount(bmask); - GLint maxBits; - GLuint i; - - /* convert pixel components in [0,_mask] to RGB values in [0,255] */ - for (i=0; i<=rmask; i++) - v->PixelToR[i] = (unsigned char) ((i * 255) / rmask); - for (i=0; i<=gmask; i++) - v->PixelToG[i] = (unsigned char) ((i * 255) / gmask); - for (i=0; i<=bmask; i++) - v->PixelToB[i] = (unsigned char) ((i * 255) / bmask); - - /* convert RGB values from [0,255] to pixel components */ - - for (i=0;i<256;i++) { - GLint r = gamma_adjust(v->RedGamma, i, 255); - GLint g = gamma_adjust(v->GreenGamma, i, 255); - GLint b = gamma_adjust(v->BlueGamma, i, 255); - v->RtoPixel[i] = (r >> (8-rBits)) << v->rshift; - v->GtoPixel[i] = (g >> (8-gBits)) << v->gshift; - v->BtoPixel[i] = (b >> (8-bBits)) << v->bshift; - } - /* overflow protection */ - for (i=256;i<512;i++) { - v->RtoPixel[i] = v->RtoPixel[255]; - v->GtoPixel[i] = v->GtoPixel[255]; - v->BtoPixel[i] = v->BtoPixel[255]; - } - - /* setup dithering kernel */ - maxBits = rBits; - if (gBits > maxBits) maxBits = gBits; - if (bBits > maxBits) maxBits = bBits; - for (i=0;i<16;i++) { - v->Kernel[i] = kernel[i] >> maxBits; - } - - v->undithered_pf = PF_Truecolor; - v->dithered_pf = (GET_VISUAL_DEPTH(v)<24) ? PF_Dither_True : PF_Truecolor; - } - - /* - * Now check for TrueColor visuals which we can optimize. - */ - if ( GET_REDMASK(v) ==0x0000ff - && GET_GREENMASK(v)==0x00ff00 - && GET_BLUEMASK(v) ==0xff0000 - && CHECK_BYTE_ORDER(v) - && v->BitsPerPixel==32 - && sizeof(GLuint)==4 - && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { - /* common 32 bpp config used on SGI, Sun */ - v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; - } - else if (GET_REDMASK(v) ==0xff0000 - && GET_GREENMASK(v)==0x00ff00 - && GET_BLUEMASK(v) ==0x0000ff - && CHECK_BYTE_ORDER(v) - && v->BitsPerPixel==32 - && sizeof(GLuint)==4 - && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { - /* common 32 bpp config used on Linux, HP, IBM */ - if (GET_VISUAL_DEPTH(v)==32) - v->undithered_pf = v->dithered_pf = PF_8A8R8G8B; - else - v->undithered_pf = v->dithered_pf = PF_8R8G8B; - } - else if (GET_REDMASK(v) ==0xff0000 - && GET_GREENMASK(v)==0x00ff00 - && GET_BLUEMASK(v) ==0x0000ff - && CHECK_BYTE_ORDER(v) - && v->BitsPerPixel==24 - && sizeof(GLuint)==4 - && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { - /* common packed 24 bpp config used on Linux */ - v->undithered_pf = v->dithered_pf = PF_8R8G8B24; - } - else if (GET_REDMASK(v) ==0xf800 - && GET_GREENMASK(v)==0x07e0 - && GET_BLUEMASK(v) ==0x001f - && CHECK_BYTE_ORDER(v) - && v->BitsPerPixel==16 - && sizeof(GLushort)==2 - && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) { - /* 5-6-5 color weight on common PC VGA boards */ - v->undithered_pf = PF_5R6G5B; - v->dithered_pf = PF_Dither_5R6G5B; - } - else if (GET_REDMASK(v) ==0xe0 - && GET_GREENMASK(v)==0x1c - && GET_BLUEMASK(v) ==0x03 - && CHECK_FOR_HPCR(v)) { - setup_8bit_hpcr( v ); - } -} - - - -/* - * Setup RGB rendering for a window with a monochrome visual. - */ -static void setup_monochrome( XMesaVisual v, XMesaBuffer b ) -{ - (void) b; - v->dithered_pf = v->undithered_pf = PF_1Bit; - /* if black=1 then we must flip pixel values */ - v->bitFlip = (GET_BLACK_PIXEL(v) != 0); -} - - - -/* - * When a context is "made current" for the first time, we can finally - * finish initializing the context's visual and buffer information. - * Input: v - the XMesaVisual to initialize - * b - the XMesaBuffer to initialize (may be NULL) - * rgb_flag - TRUE = RGBA mode, FALSE = color index mode - * window - the window/pixmap we're rendering into - * cmap - the colormap associated with the window/pixmap - * Return: GL_TRUE=success, GL_FALSE=failure - */ -static GLboolean initialize_visual_and_buffer( int client, - XMesaVisual v, - XMesaBuffer b, - GLboolean rgb_flag, - XMesaDrawable window, - XMesaColormap cmap ) -{ - struct xmesa_renderbuffer *front_xrb, *back_xrb; -#ifndef XFree86Server - XGCValues gcvalues; -#endif - - if (b) { - assert(b->xm_visual == v); - } - - if (b) { - front_xrb = b->frontxrb; - back_xrb = b->backxrb; - } - else { - front_xrb = back_xrb = NULL; - } - - /* Save true bits/pixel */ - v->BitsPerPixel = bits_per_pixel(v); - assert(v->BitsPerPixel > 0); - - - if (rgb_flag==GL_FALSE) { - /* COLOR-INDEXED WINDOW: - * Even if the visual is TrueColor or DirectColor we treat it as - * being color indexed. This is weird but might be useful to someone. - */ - v->dithered_pf = v->undithered_pf = PF_Index; - v->mesa_visual.indexBits = GET_VISUAL_DEPTH(v); - } - 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) { - setup_truecolor( v, b, cmap ); - } - else if (xclass==GLX_STATIC_GRAY && GET_VISUAL_DEPTH(v)==1) { - setup_monochrome( v, b ); - } - else if (xclass==GLX_GRAY_SCALE || xclass==GLX_STATIC_GRAY) { - if (!setup_grayscale( client, v, b, cmap )) { - return GL_FALSE; - } - } - else if ((xclass==GLX_PSEUDO_COLOR || xclass==GLX_STATIC_COLOR) - && GET_VISUAL_DEPTH(v)>=4 && GET_VISUAL_DEPTH(v)<=16) { - if (!setup_dithered_color( client, v, b, cmap )) { - return GL_FALSE; - } - } - else { - _mesa_warning(NULL, "XMesa: RGB mode rendering not supported in given visual."); - return GL_FALSE; - } - v->mesa_visual.indexBits = 0; - - if (_mesa_getenv("MESA_NO_DITHER")) { - v->dithered_pf = v->undithered_pf; - } - } - - - /* - * 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 dithered pf = %u\n", v->dithered_pf); - _mesa_printf("X/Mesa undithered pf = %u\n", v->undithered_pf); - _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) { - /* Do window-specific initializations */ - - b->frontxrb->drawable = window; - b->frontxrb->pixmap = (XMesaPixmap) window; - - /* Setup for single/double buffering */ - if (v->mesa_visual.doubleBufferMode) { - /* Double buffered */ -#ifndef XFree86Server - b->shm = check_for_xshm( v->display ); -#endif - xmesa_alloc_back_buffer(b, b->mesa_buffer.Width, b->mesa_buffer.Height); - } - - /* X11 graphics contexts */ -#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 ); - - /* cleargc - for glClear() */ -#ifdef XFree86Server - b->cleargc = CreateScratchGC(v->display, window->depth); -#else - b->cleargc = XCreateGC( v->display, window, 0, NULL ); -#endif - XMesaSetFunction( v->display, b->cleargc, GXcopy ); - - /* - * Don't generate Graphics Expose/NoExpose events in swapbuffers(). - * Patch contributed by Michael Pichler May 15, 1995. - */ -#ifdef XFree86Server - b->swapgc = CreateScratchGC(v->display, window->depth); - { - CARD32 v[1]; - v[0] = FALSE; - dixChangeGC(NullClient, b->swapgc, GCGraphicsExposures, v, NULL); - } -#else - gcvalues.graphics_exposures = False; - b->swapgc = XCreateGC( v->display, window, - GCGraphicsExposures, &gcvalues); -#endif - XMesaSetFunction( v->display, b->swapgc, GXcopy ); - /* - * Set fill style and tile pixmap once for all for HPCR stuff - * (instead of doing it each time in clear_color_HPCR_pixmap()) - * Initialize whole stuff - * Patch contributed by Jacques Leroy March 8, 1998. - */ - if (v->hpcr_clear_flag && back_xrb->pixmap) { - int i; - for (i=0; i<16; i++) - { - XMesaPutPixel(v->hpcr_clear_ximage, i, 0, 0); - XMesaPutPixel(v->hpcr_clear_ximage, i, 1, 0); - } - XMesaPutImage(b->display, (XMesaDrawable)v->hpcr_clear_pixmap, - b->cleargc, v->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); - XMesaSetFillStyle( v->display, b->cleargc, FillTiled); - XMesaSetTile( v->display, b->cleargc, v->hpcr_clear_pixmap ); - } - - /* Initialize the row buffer XImage for use in write_color_span() */ -#ifdef XFree86Server - b->rowimage = XMesaCreateImage(GET_VISUAL_DEPTH(v), MAX_WIDTH, 1, - (char *)MALLOC(MAX_WIDTH*4)); -#else - b->rowimage = XCreateImage( v->display, - v->visinfo->visual, - v->visinfo->depth, - ZPixmap, 0, /*format, offset*/ - (char*) MALLOC(MAX_WIDTH*4), /*data*/ - MAX_WIDTH, 1, /*width, height*/ - 32, /*bitmap_pad*/ - 0 /*bytes_per_line*/ ); -#endif - if (!b->rowimage) - return GL_FALSE; - } - - return GL_TRUE; -} - - - -/* - * Convert an RGBA color to a pixel value. - */ -unsigned long -xmesa_color_to_pixel(GLcontext *ctx, - GLubyte r, GLubyte g, GLubyte b, GLubyte a, - GLuint pixelFormat) -{ - XMesaContext xmesa = XMESA_CONTEXT(ctx); - switch (pixelFormat) { - case PF_Index: - return 0; - case PF_Truecolor: - { - unsigned long p; - PACK_TRUECOLOR( p, r, g, b ); - return p; - } - case PF_8A8B8G8R: - return PACK_8A8B8G8R( r, g, b, a ); - case PF_8A8R8G8B: - return PACK_8A8R8G8B( r, g, b, a ); - case PF_8R8G8B: - /* fall through */ - case PF_8R8G8B24: - return PACK_8R8G8B( r, g, b ); - case PF_5R6G5B: - return PACK_5R6G5B( r, g, b ); - case PF_Dither: - { - DITHER_SETUP; - return DITHER( 1, 0, r, g, b ); - } - case PF_1Bit: - /* 382 = (3*255)/2 */ - return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; - case PF_HPCR: - return DITHER_HPCR(1, 1, r, g, b); - case PF_Lookup: - { - LOOKUP_SETUP; - return LOOKUP( r, g, b ); - } - case PF_Grayscale: - return GRAY_RGB( r, g, b ); - case PF_Dither_True: - /* fall through */ - case PF_Dither_5R6G5B: - { - unsigned long p; - PACK_TRUEDITHER(p, 1, 0, r, g, b); - return p; - } - default: - _mesa_problem(ctx, "Bad pixel format in xmesa_color_to_pixel"); - } - return 0; -} - - -#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. - */ -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 ) -{ - char *gamma; - XMesaVisual v; - GLint red_bits, green_bits, blue_bits, alpha_bits; - - /* 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. - */ -#ifdef XFree86Server - /* NOT_NEEDED */ -#else - XSynchronize( display, 1 ); -#endif - } - - v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); - if (!v) { - return NULL; - } - - /* - * In the X server, NULL is passed in for the display. It will have - * to be set before using this visual. See XMesaSetVisualDisplay() - * below. - */ - 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 - - /* check for MESA_GAMMA environment variable */ - gamma = _mesa_getenv("MESA_GAMMA"); - if (gamma) { - v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0; - sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma ); - if (v->RedGamma<=0.0) v->RedGamma = 1.0; - if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma; - if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma; - } - else { - v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0; - } - - 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)). - */ - 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; - - (void) initialize_visual_and_buffer( 0, v, NULL, rgb_flag, 0, 0 ); - - { - const int xclass = v->mesa_visual.visualType; - if (xclass==GLX_TRUE_COLOR || xclass==GLX_DIRECT_COLOR) { - red_bits = bitcount(GET_REDMASK(v)); - green_bits = bitcount(GET_GREENMASK(v)); - blue_bits = bitcount(GET_BLUEMASK(v)); - alpha_bits = 0; - } - 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) ); - } - } - - if (alpha_flag && alpha_bits == 0) - alpha_bits = 8; - - _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; -} - - -void XMesaSetVisualDisplay( XMesaDisplay *dpy, XMesaVisual v ) -{ - v->display = dpy; -} - - -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. - */ -XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list ) -{ - static GLboolean firstTime = GL_TRUE; - XMesaContext c; - GLcontext *mesaCtx; - struct dd_function_table functions; - TNLcontext *tnl; - - if (firstTime) { - _glthread_INIT_MUTEX(_xmesa_lock); - firstTime = GL_FALSE; - } - - /* Note: the XMesaContext contains a Mesa GLcontext struct (inheritance) */ - c = (XMesaContext) CALLOC_STRUCT(xmesa_context); - if (!c) - return NULL; - - mesaCtx = &(c->mesa); - - /* initialize with default driver functions, then plug in XMesa funcs */ - _mesa_init_driver_functions(&functions); - xmesa_init_driver_functions(v, &functions); - if (!_mesa_initialize_context(mesaCtx, &v->mesa_visual, - share_list ? &(share_list->mesa) : (GLcontext *) NULL, - &functions, (void *) c)) { - _mesa_free(c); - return NULL; - } - - _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); -#if SWTC - if (c->Mesa_DXTn) { - _mesa_enable_extension(c, "GL_EXT_texture_compression_s3tc"); - _mesa_enable_extension(c, "GL_S3_s3tc"); - } - _mesa_enable_extension(c, "GL_3DFX_texture_compression_FXT1"); -#endif - - /* finish up xmesa context initializations */ - c->swapbytes = CHECK_BYTE_ORDER(v) ? GL_FALSE : GL_TRUE; - c->xm_visual = v; - c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */ - c->display = v->display; - c->pixelformat = v->dithered_pf; /* Dithering is enabled by default */ - - /* Initialize the software rasterizer and helper modules. - */ - if (!_swrast_CreateContext( mesaCtx ) || - !_ac_CreateContext( mesaCtx ) || - !_tnl_CreateContext( mesaCtx ) || - !_swsetup_CreateContext( mesaCtx )) { - _mesa_free_context_data(&c->mesa); - _mesa_free(c); - return NULL; - } - - /* tnl setup */ - tnl = TNL_CONTEXT(mesaCtx); - tnl->Driver.RunPipeline = _tnl_run_pipeline; - /* swrast setup */ - xmesa_register_swrast_functions( mesaCtx ); - _swsetup_Wakeup(mesaCtx); - - return c; -} - - - -void XMesaDestroyContext( XMesaContext c ) -{ - GLcontext *mesaCtx = &c->mesa; -#ifdef FX - XMesaBuffer xmbuf = XMESA_BUFFER(mesaCtx->DrawBuffer); - - if (xmbuf && xmbuf->FXctx) - fxMesaDestroyContext(xmbuf->FXctx); -#endif - _swsetup_DestroyContext( mesaCtx ); - _swrast_DestroyContext( mesaCtx ); - _tnl_DestroyContext( mesaCtx ); - _ac_DestroyContext( mesaCtx ); - _mesa_free_context_data( mesaCtx ); - _mesa_free( c ); -} - - - -/* - * XXX this isn't a public function! It's a hack for the 3Dfx driver. - * Create a new XMesaBuffer from an X window. - * Input: v - the XMesaVisual - * w - the window - * c - the context - * Return: new XMesaBuffer or NULL if error - */ -XMesaBuffer -XMesaCreateWindowBuffer2(XMesaVisual v, XMesaWindow w, XMesaContext c) -{ -#ifndef XFree86Server - XWindowAttributes attr; -#endif -#ifdef FX - char *fxEnvVar; -#endif - int client = 0; - XMesaBuffer b; - XMesaColormap cmap; - - assert(v); - (void) c; - - /* Check that window depth matches visual depth */ -#ifdef XFree86Server - client = CLIENT_ID(((XMesaDrawable)w)->id); - - if (GET_VISUAL_DEPTH(v) != ((XMesaDrawable)w)->depth) { - _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", - GET_VISUAL_DEPTH(v), ((XMesaDrawable) w)->depth); - return NULL; - } -#else - XGetWindowAttributes( v->display, w, &attr ); - - if (GET_VISUAL_DEPTH(v) != attr.depth) { - _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n", - GET_VISUAL_DEPTH(v), attr.depth); - return NULL; - } -#endif - - /* 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 = alloc_xmesa_buffer(v, WINDOW, cmap); - if (!b) { - return NULL; - } - - if (!initialize_visual_and_buffer( client, v, b, v->mesa_visual.rgbMode, - (XMesaDrawable)w, cmap )) { - free_xmesa_buffer(client, b); - return NULL; - } - -#ifdef FX - fxEnvVar = _mesa_getenv("MESA_GLX_FX"); - if (fxEnvVar) { - if (fxEnvVar[0]!='d') { - int attribs[100]; - int numAttribs = 0; - int hw; - if (v->mesa_visual.depthBits > 0) { - attribs[numAttribs++] = FXMESA_DEPTH_SIZE; - attribs[numAttribs++] = v->mesa_visual.depthBits; - } - if (v->mesa_visual.doubleBufferMode) { - attribs[numAttribs++] = FXMESA_DOUBLEBUFFER; - } - if (v->mesa_visual.accumRedBits > 0) { - attribs[numAttribs++] = FXMESA_ACCUM_SIZE; - attribs[numAttribs++] = v->mesa_visual.accumRedBits; - } - if (v->mesa_visual.stencilBits > 0) { - attribs[numAttribs++] = FXMESA_STENCIL_SIZE; - attribs[numAttribs++] = v->mesa_visual.stencilBits; - } - if (v->mesa_visual.alphaBits > 0) { - attribs[numAttribs++] = FXMESA_ALPHA_SIZE; - attribs[numAttribs++] = v->mesa_visual.alphaBits; - } - if (1) { - attribs[numAttribs++] = FXMESA_SHARE_CONTEXT; - attribs[numAttribs++] = (int) &(c->mesa); - } - attribs[numAttribs++] = FXMESA_NONE; - - /* [dBorca] we should take an envvar for `fxMesaSelectCurrentBoard'!!! */ - hw = fxMesaSelectCurrentBoard(0); - - /* if these fail, there's a new bug somewhere */ - ASSERT(b->mesa_buffer.Width > 0); - ASSERT(b->mesa_buffer.Height > 0); - - if ((hw == GR_SSTTYPE_VOODOO) || (hw == GR_SSTTYPE_Voodoo2)) { - b->FXctx = fxMesaCreateBestContext(0, b->mesa_buffer.Width, - b->mesa_buffer.Height, attribs); - if ((v->undithered_pf!=PF_Index) && (b->backxrb->ximage)) { - b->FXisHackUsable = b->FXctx ? GL_TRUE : GL_FALSE; - if (b->FXctx && (fxEnvVar[0]=='w' || fxEnvVar[0]=='W')) { - b->FXwindowHack = GL_TRUE; - FX_grSstControl(GR_CONTROL_DEACTIVATE); - } - else { - b->FXwindowHack = GL_FALSE; - } - } - } - else { - if (fxEnvVar[0]=='w' || fxEnvVar[0]=='W') - b->FXctx = fxMesaCreateContext(w, GR_RESOLUTION_NONE, - GR_REFRESH_75Hz, attribs); - else - b->FXctx = fxMesaCreateBestContext(0, b->mesa_buffer.Width, - b->mesa_buffer.Height, attribs); - b->FXisHackUsable = GL_FALSE; - b->FXwindowHack = GL_FALSE; - } - /* - fprintf(stderr, - "voodoo %d, wid %d height %d hack: usable %d active %d\n", - hw, b->mesa_buffer.Width, b->mesa_buffer.Height, - b->FXisHackUsable, b->FXwindowHack); - */ - } - } - else { - _mesa_warning(NULL, "WARNING: This Mesa Library includes the Glide driver but\n"); - _mesa_warning(NULL, " you have not defined the MESA_GLX_FX env. var.\n"); - _mesa_warning(NULL, " (check the README.3DFX file for more information).\n\n"); - _mesa_warning(NULL, " you can disable this message with a 'export MESA_GLX_FX=disable'.\n"); - } -#endif - - return b; -} - - -XMesaBuffer -XMesaCreateWindowBuffer(XMesaVisual v, XMesaWindow w) -{ - return XMesaCreateWindowBuffer2( v, w, NULL ); -} - - -/** - * 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 - */ -XMesaBuffer -XMesaCreatePixmapBuffer(XMesaVisual v, XMesaPixmap p, XMesaColormap cmap) -{ - int client = 0; - XMesaBuffer b; - - assert(v); - - b = alloc_xmesa_buffer(v, PIXMAP, cmap); - if (!b) { - return NULL; - } - -#ifdef XFree86Server - client = CLIENT_ID(((XMesaDrawable)p)->id); -#endif - - if (!initialize_visual_and_buffer(client, v, b, v->mesa_visual.rgbMode, - (XMesaDrawable)p, cmap)) { - free_xmesa_buffer(client, b); - return NULL; - } - - return b; -} - - - -XMesaBuffer -XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap, - unsigned int width, unsigned int height) -{ -#ifdef XFree86Server - return 0; -#else - int client = 0; - XMesaWindow root; - XMesaDrawable drawable; /* X Pixmap Drawable */ - XMesaBuffer b; - - b = alloc_xmesa_buffer(v, PBUFFER, cmap); - if (!b) { - return NULL; - } - - /* allocate pixmap for front buffer */ - root = RootWindow( v->display, v->visinfo->screen ); - drawable = XCreatePixmap( v->display, root, width, height, v->visinfo->depth ); - - if (!initialize_visual_and_buffer(client, v, b, v->mesa_visual.rgbMode, - drawable, cmap)) { - free_xmesa_buffer(client, b); - return NULL; - } - - return b; -#endif -} - - - -/* - * Deallocate an XMesaBuffer structure and all related info. - */ -void XMesaDestroyBuffer( XMesaBuffer b ) -{ - int client = 0; - -#ifdef XFree86Server - if (b->frontxrb->drawable) - client = CLIENT_ID(b->frontxrb->drawable->id); -#endif - - if (b->gc) XMesaFreeGC( b->xm_visual->display, b->gc ); - if (b->cleargc) XMesaFreeGC( b->xm_visual->display, b->cleargc ); - if (b->swapgc) XMesaFreeGC( b->xm_visual->display, b->swapgc ); - - if (b->xm_visual->mesa_visual.doubleBufferMode) - { - if (b->backxrb->ximage) { -#if defined(USE_XSHM) && !defined(XFree86Server) - if (b->shm) { - XShmDetach( b->xm_visual->display, &b->shminfo ); - XDestroyImage( b->backxrb->ximage ); - shmdt( b->shminfo.shmaddr ); - } - else -#endif - XMesaDestroyImage( b->backxrb->ximage ); - } - if (b->backxrb->pixmap) { - XMesaFreePixmap( b->xm_visual->display, - (XMesaPixmap) b->backxrb->pixmap ); - if (b->xm_visual->hpcr_clear_flag) { - XMesaFreePixmap( b->xm_visual->display, - b->xm_visual->hpcr_clear_pixmap ); - XMesaDestroyImage( b->xm_visual->hpcr_clear_ximage ); - } - } - } - if (b->rowimage) { - _mesa_free( b->rowimage->data ); - b->rowimage->data = NULL; - XMesaDestroyImage( b->rowimage ); - } - - free_xmesa_buffer(client, b); -} - - - -/* - * 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. - */ -GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer, - XMesaBuffer readBuffer ) -{ - if (c) { - if (!drawBuffer || !readBuffer) - return GL_FALSE; /* must specify buffers! */ - -#ifdef FX - if (drawBuffer->FXctx) { - fxMesaMakeCurrent(drawBuffer->FXctx); - - c->xm_buffer = drawBuffer; - - return GL_TRUE; - } -#endif - if (&(c->mesa) == _mesa_get_current_context() - && c->mesa.DrawBuffer == &drawBuffer->mesa_buffer - && c->mesa.ReadBuffer == &readBuffer->mesa_buffer - && ((XMesaBuffer) c->mesa.DrawBuffer)->wasCurrent) { - /* same context and buffer, do nothing */ - return GL_TRUE; - } - - c->xm_buffer = drawBuffer; - - _mesa_make_current(&(c->mesa), - &drawBuffer->mesa_buffer, - &readBuffer->mesa_buffer); - - if (c->xm_visual->mesa_visual.rgbMode) { - /* - * Must recompute and set these pixel values because colormap - * can be different for different windows. - */ - c->clearpixel = xmesa_color_to_pixel( &c->mesa, - c->clearcolor[0], - c->clearcolor[1], - c->clearcolor[2], - c->clearcolor[3], - c->xm_visual->undithered_pf); - XMesaSetForeground(c->display, drawBuffer->cleargc, c->clearpixel); - } - - /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */ - drawBuffer->wasCurrent = GL_TRUE; - } - else { - /* Detach */ - _mesa_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 (XMesaBuffer) (ctx->ReadBuffer); - } - else { - return 0; - } -} - - -GLboolean XMesaForceCurrent(XMesaContext c) -{ - if (c) { - 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; -} - - -GLboolean XMesaLoseCurrent(XMesaContext c) -{ - (void) c; - _mesa_make_current(NULL, NULL, NULL); - return GL_TRUE; -} - - -/* - * Switch 3Dfx support hack between window and full-screen mode. - */ -GLboolean XMesaSetFXmode( GLint mode ) -{ -#ifdef FX - const char *fx = _mesa_getenv("MESA_GLX_FX"); - if (fx && fx[0] != 'd') { - GET_CURRENT_CONTEXT(ctx); - GrHwConfiguration hw; - if (!FX_grSstQueryHardware(&hw)) { - /*fprintf(stderr, "!grSstQueryHardware\n");*/ - return GL_FALSE; - } - if (hw.num_sst < 1) { - /*fprintf(stderr, "hw.num_sst < 1\n");*/ - return GL_FALSE; - } - if (ctx) { - /* [dBorca] Hack alert: - * oh, this is sooo wrong: ctx above is - * really an fxMesaContext, not an XMesaContext - */ - XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); - if (mode == XMESA_FX_WINDOW) { - if (xmbuf->FXisHackUsable) { - FX_grSstControl(GR_CONTROL_DEACTIVATE); - xmbuf->FXwindowHack = GL_TRUE; - return GL_TRUE; - } - } - else if (mode == XMESA_FX_FULLSCREEN) { - FX_grSstControl(GR_CONTROL_ACTIVATE); - xmbuf->FXwindowHack = GL_FALSE; - return GL_TRUE; - } - else { - /* Error: Bad mode value */ - } - } - } - /*fprintf(stderr, "fallthrough\n");*/ -#else - (void) mode; -#endif - return GL_FALSE; -} - - - -#ifdef FX -/* - * Read image from VooDoo frame buffer into X/Mesa's back XImage. - */ -static void FXgetImage( XMesaBuffer b ) -{ - GET_CURRENT_CONTEXT(ctx); - static unsigned short pixbuf[MAX_WIDTH]; - GLuint x, y; - int xpos, ypos; - XMesaWindow root; - unsigned int bw, depth, width, height; - XMesaContext xmesa = XMESA_CONTEXT(ctx); - -#ifdef XFree86Server - x = b->frontxrb->pixmap->x; - y = b->frontxrb->pixmap->y; - width = b->frontxrb->pixmap->width; - height = b->frontxrb->pixmap->height; - depth = b->frontxrb->pixmap->depth; -#else - XGetGeometry( b->xm_visual->display, b->frontxrb->pixmap, - &root, &xpos, &ypos, &width, &height, &bw, &depth); -#endif - if (b->mesa_buffer.Width != width || b->mesa_buffer.Height != height) { - b->mesa_buffer.Width = MIN2((int)width, b->FXctx->width); - b->mesa_buffer.Height = MIN2((int)height, b->FXctx->height); - if (b->mesa_buffer.Width & 1) - b->mesa_buffer.Width--; /* prevent odd width */ - xmesa_alloc_back_buffer(b, b->mesa_buffer.Width, b->mesa_buffer.Height); - } - - /* [dBorca] we're always in the right GR_COLORFORMAT... aren't we? */ - /* grLfbWriteColorFormat(GR_COLORFORMAT_ARGB); */ - if (b->xm_visual->undithered_pf==PF_5R6G5B) { - /* Special case: 16bpp RGB */ - grLfbReadRegion( GR_BUFFER_FRONTBUFFER, /* src buffer */ - 0, b->FXctx->height - b->mesa_buffer.Height, /*pos*/ - b->mesa_buffer.Width, b->mesa_buffer.Height, /* size */ - b->mesa_buffer.Width * sizeof(GLushort), /* stride */ - b->backxrb->ximage->data); /* dest buffer */ - } - else if (b->xm_visual->dithered_pf==PF_Dither - && GET_VISUAL_DEPTH(b->xm_visual)==8) { - /* Special case: 8bpp RGB */ - for (y=0;y<b->mesa_buffer.Height;y++) { - GLubyte *ptr = (GLubyte*) b->backxrb->ximage->data - + b->backxrb->ximage->bytes_per_line * y; - XDITHER_SETUP(y); - - /* read row from 3Dfx frame buffer */ - grLfbReadRegion( GR_BUFFER_FRONTBUFFER, - 0, b->FXctx->height-(b->mesa_buffer.Height-y), - b->mesa_buffer.Width, 1, - 0, - pixbuf ); - - /* write to XImage back buffer */ - for (x=0;x<b->mesa_buffer.Width;x++) { - GLubyte r = (pixbuf[x] & 0xf800) >> 8; - GLubyte g = (pixbuf[x] & 0x07e0) >> 3; - GLubyte b = (pixbuf[x] & 0x001f) << 3; - *ptr++ = XDITHER( x, r, g, b); - } - } - } - else { - /* General case: slow! */ - for (y=0;y<b->mesa_buffer.Height;y++) { - /* read row from 3Dfx frame buffer */ - grLfbReadRegion( GR_BUFFER_FRONTBUFFER, - 0, b->FXctx->height-(b->mesa_buffer.Height-y), - b->mesa_buffer.Width, 1, - 0, - pixbuf ); - - /* write to XImage back buffer */ - for (x=0;x<b->mesa_buffer.Width;x++) { - XMesaPutPixel(b->backxrb->ximage,x,y, - xmesa_color_to_pixel(ctx, - (pixbuf[x] & 0xf800) >> 8, - (pixbuf[x] & 0x07e0) >> 3, - (pixbuf[x] & 0x001f) << 3, - 0xff, - b->xm_visual->undithered_pf)); - } - } - } - /* grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); */ -} -#endif - - -/* - * Copy the back buffer to the front buffer. If there's no back buffer - * this is a no-op. - */ -void XMesaSwapBuffers( XMesaBuffer b ) -{ - GET_CURRENT_CONTEXT(ctx); - - /* If we're swapping the buffer associated with the current context - * we have to flush any pending rendering commands first. - */ - if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) - _mesa_notifySwapBuffers(ctx); - - if (b->db_state) { -#ifdef FX - if (b->FXctx) { - fxMesaSwapBuffers(); - - if (b->FXwindowHack) - FXgetImage(b); - else - return; - } -#endif - if (b->backxrb->ximage) { - /* Copy Ximage from host's memory to server's window */ -#if defined(USE_XSHM) && !defined(XFree86Server) - if (b->shm) { - /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ - XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, - b->swapgc, - b->backxrb->ximage, 0, 0, - 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, - False ); - /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ - } - else -#endif - { - /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ - XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, - b->swapgc, - b->backxrb->ximage, 0, 0, - 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height ); - /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ - } - } - else { - /* Copy pixmap to window on server */ - /*_glthread_LOCK_MUTEX(_xmesa_lock);*/ - XMesaCopyArea( b->xm_visual->display, - b->backxrb->pixmap, /* source drawable */ - b->frontxrb->drawable, /* dest. drawable */ - b->swapgc, - 0, 0, b->mesa_buffer.Width, b->mesa_buffer.Height, - 0, 0 /* dest region */ - ); - /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/ - } - } -#if !defined(XFree86Server) - XSync( b->xm_visual->display, False ); -#endif -} - - - -/* - * Copy sub-region of back buffer to front buffer - */ -void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height ) -{ - GET_CURRENT_CONTEXT(ctx); - - /* If we're swapping the buffer associated with the current context - * we have to flush any pending rendering commands first. - */ - if (ctx && ctx->DrawBuffer == &(b->mesa_buffer)) - _mesa_notifySwapBuffers(ctx); - - if (b->db_state) { - int yTop = b->mesa_buffer.Height - y - height; -#ifdef FX - if (b->FXctx) { - fxMesaSwapBuffers(); - if (b->FXwindowHack) - FXgetImage(b); - else - return; - } -#endif - if (b->backxrb->ximage) { - /* Copy Ximage from host's memory to server's window */ -#if defined(USE_XSHM) && !defined(XFree86Server) - if (b->shm) { - /* XXX assuming width and height aren't too large! */ - XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, - b->swapgc, - b->backxrb->ximage, x, yTop, - x, yTop, width, height, False ); - /* wait for finished event??? */ - } - else -#endif - { - /* XXX assuming width and height aren't too large! */ - XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable, - b->swapgc, - b->backxrb->ximage, x, yTop, - x, yTop, width, height ); - } - } - else { - /* Copy pixmap to window on server */ - XMesaCopyArea( b->xm_visual->display, - b->backxrb->pixmap, /* source drawable */ - b->frontxrb->drawable, /* dest. drawable */ - b->swapgc, - x, yTop, width, height, /* source region */ - x, yTop /* dest region */ - ); - } - } -} - - -/* - * Return a pointer to the XMesa backbuffer Pixmap or XImage. This function - * is a way to get "under the hood" of X/Mesa so one can manipulate the - * back buffer directly. - * 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 - */ -#ifndef XFree86Server -GLboolean XMesaGetBackBuffer( XMesaBuffer b, - XMesaPixmap *pixmap, - XMesaImage **ximage ) -{ - if (b->db_state) { - if (pixmap) *pixmap = b->backxrb->pixmap; - if (ximage) *ximage = b->backxrb->ximage; - return GL_TRUE; - } - else { - *pixmap = 0; - *ximage = NULL; - return GL_FALSE; - } -} -#endif /* XFree86Server */ - - -/* - * 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 ) -{ - struct gl_renderbuffer *rb - = b->mesa_buffer.Attachment[BUFFER_DEPTH].Renderbuffer; - if (!rb || !rb->Data) { - *width = 0; - *height = 0; - *bytesPerValue = 0; - *buffer = 0; - return GL_FALSE; - } - else { - *width = b->mesa_buffer.Width; - *height = b->mesa_buffer.Height; - *bytesPerValue = b->mesa_buffer.Visual.depthBits <= 16 - ? sizeof(GLushort) : sizeof(GLuint); - *buffer = rb->Data; - return GL_TRUE; - } -} - - -void XMesaFlush( XMesaContext c ) -{ - if (c && c->xm_visual) { -#ifdef XFree86Server - /* NOT_NEEDED */ -#else - 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->frontxrb->drawable == d && b->display == dpy) { - return b; - } - } - return NULL; -} - - - -/* - * 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->display && b->frontxrb->drawable && b->type == WINDOW) { -#ifdef XFree86Server - /* NOT_NEEDED */ -#else - XSync(b->display, False); - if (!window_exists( b->display, b->frontxrb->drawable )) { - /* found a dead window, free the ancillary info */ - XMesaDestroyBuffer( b ); - } -#endif - } - } -} - - -void XMesaReset( void ) -{ - while (XMesaBufferList) - XMesaDestroyBuffer(XMesaBufferList); - - XMesaBufferList = NULL; -} - - -unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y, - GLfloat red, GLfloat green, - GLfloat blue, GLfloat alpha ) -{ - GLcontext *ctx = &xmesa->mesa; - GLint r = (GLint) (red * 255.0F); - GLint g = (GLint) (green * 255.0F); - GLint b = (GLint) (blue * 255.0F); - GLint a = (GLint) (alpha * 255.0F); - - switch (xmesa->pixelformat) { - case PF_Index: - return 0; - case PF_Truecolor: - { - unsigned long p; - PACK_TRUECOLOR( p, r, g, b ); - return p; - } - case PF_8A8B8G8R: - return PACK_8A8B8G8R( r, g, b, a ); - case PF_8A8R8G8B: - return PACK_8A8R8G8B( r, g, b, a ); - case PF_8R8G8B: - return PACK_8R8G8B( r, g, b ); - case PF_5R6G5B: - return PACK_5R6G5B( r, g, b ); - case PF_Dither: - { - DITHER_SETUP; - return DITHER( x, y, r, g, b ); - } - case PF_1Bit: - /* 382 = (3*255)/2 */ - return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip; - case PF_HPCR: - return DITHER_HPCR(x, y, r, g, b); - case PF_Lookup: - { - LOOKUP_SETUP; - return LOOKUP( r, g, b ); - } - case PF_Grayscale: - return GRAY_RGB( r, g, b ); - case PF_Dither_5R6G5B: - /* fall through */ - case PF_Dither_True: - { - unsigned long p; - PACK_TRUEDITHER(p, x, y, r, g, b); - return p; - } - default: - _mesa_problem(NULL, "Bad pixel format in XMesaDitherColor"); - } - return 0; -} - - -/* - * This is typically called when the window size changes and we need - * to reallocate the buffer's back/depth/stencil/accum buffers. - */ -void XMesaResizeBuffers( XMesaBuffer b ) -{ -#ifdef XFree86Server - GLuint winwidth, winheight; - GET_CURRENT_CONTEXT(ctx); - - winwidth = MIN2(b->frontxrb->drawable->width, MAX_WIDTH); - winheight = MIN2(b->frontxrb->drawable->height, MAX_HEIGHT); - - xmesa_resize_buffers(ctx, &(b->mesa_buffer), winwidth, winheight); -#else - Window root; - int xpos, ypos; - unsigned int width, height, bw, depth; - GET_CURRENT_CONTEXT(ctx); - XGetGeometry( b->xm_visual->display, b->frontxrb->pixmap, - &root, &xpos, &ypos, &width, &height, &bw, &depth); - xmesa_resize_buffers(ctx, &(b->mesa_buffer), width, height); -#endif -} - |