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diff --git a/nx-X11/programs/Xserver/GL/glx/glxbuf.c b/nx-X11/programs/Xserver/GL/glx/glxbuf.c
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+/* $XFree86: xc/programs/Xserver/GL/glx/glxbuf.c,v 1.6 2001/03/25 05:32:01 tsi Exp $ */
+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+**
+** http://oss.sgi.com/projects/FreeB
+**
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+**
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+**
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+**
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "glxserver.h"
+#include "glxutil.h"
+#include "glxbuf.h"
+#include "glxfb.h"
+#include "glxmem.h"
+#include "glxpix.h"
+
+void
+__glXFBInitDrawable(__GLXdrawablePrivate *glxPriv, __GLcontextModes *modes)
+{
+ __GLdrawablePrivate *glPriv;
+ GLint rgbBits;
+ GLint accumBits;
+
+ glPriv = &glxPriv->glPriv;
+ rgbBits = modes->rgbBits;
+ accumBits = modes->accumRedBits + modes->accumGreenBits +
+ modes->accumBlueBits + modes->accumAlphaBits;
+
+#if defined(__GL_ALIGNED_BUFFERS)
+ /* initialize pixel alignments (for more details see context.h) */
+ glPriv->xAlignment = 1;
+ glPriv->yAlignment = 1;
+#endif
+
+ glxPriv->swapBuffers = __glXFBMemSwapBuffers;
+
+ glPriv->yInverted = GL_TRUE; /* Y is upside-down */
+
+ if (modes->doubleBufferMode) {
+ if (modes->colorIndexMode) {
+ __glXInitFB(&glPriv->frontBuffer, glPriv, modes->indexBits);
+ __glXInitMem(&glPriv->backBuffer, glPriv, modes->indexBits);
+ } else {
+ __glXInitFB(&glPriv->frontBuffer, glPriv, rgbBits);
+ __glXInitMem(&glPriv->backBuffer, glPriv, rgbBits);
+ }
+ } else {
+ if (modes->colorIndexMode) {
+ __glXInitFB(&glPriv->frontBuffer, glPriv, modes->indexBits);
+ } else {
+ __glXInitFB(&glPriv->frontBuffer, glPriv, rgbBits);
+ }
+ }
+
+#if defined(__GL_MAX_AUXBUFFERS) && (__GL_MAX_AUXBUFFERS > 0)
+ if (modes->maxAuxBuffers > 0) {
+ GLint i;
+
+ for (i=0; i < modes->maxAuxBuffers; i++) {
+ if (modes->colorIndexMode) {
+ __glXInitMem(&glPriv->auxBuffer[i], glPriv, modes->indexBits);
+ } else {
+ __glXInitMem(&glPriv->auxBuffer[i], glPriv, rgbBits);
+ }
+ }
+ }
+#endif
+
+ if (modes->haveAccumBuffer) {
+ __glXInitMem(&glPriv->accumBuffer, glPriv, accumBits);
+ }
+ if (modes->haveDepthBuffer) {
+ __glXInitMem(&glPriv->depthBuffer, glPriv, modes->depthBits);
+ }
+ if (modes->haveStencilBuffer) {
+ __glXInitMem(&glPriv->stencilBuffer, glPriv, modes->stencilBits);
+ }
+}
+
+void
+__glXPixInitDrawable(__GLXdrawablePrivate *glxPriv, __GLcontextModes *modes)
+{
+ __GLdrawablePrivate *glPriv;
+ GLint rgbBits;
+ GLint accumBits;
+
+ assert(glxPriv->pGlxPixmap);
+
+ glPriv = &glxPriv->glPriv;
+ rgbBits = modes->rgbBits;
+ accumBits = modes->accumRedBits + modes->accumGreenBits +
+ modes->accumBlueBits + modes->accumAlphaBits;
+
+#if defined(__GL_ALIGNED_BUFFERS)
+ /* initialize pixel alignments (for more details see context.h) */
+ glPriv->xAlignment = 1;
+ glPriv->yAlignment = 1;
+#endif
+
+ glxPriv->swapBuffers = (GLboolean (*)(__GLXdrawablePrivate *))__glXNop;
+
+ glPriv->yInverted = GL_FALSE;
+
+ if (modes->doubleBufferMode) {
+ if (modes->colorIndexMode) {
+ __glXInitPix(&glPriv->frontBuffer, glPriv, rgbBits,
+ glxPriv->drawId, glxPriv->pGlxPixmap);
+ __glXInitMem(&glPriv->backBuffer, glPriv, modes->indexBits);
+ } else {
+ __glXInitPix(&glPriv->frontBuffer, glPriv, rgbBits,
+ glxPriv->drawId, glxPriv->pGlxPixmap);
+ __glXInitMem(&glPriv->backBuffer, glPriv, rgbBits);
+ }
+ } else {
+ if (modes->colorIndexMode) {
+ __glXInitPix(&glPriv->frontBuffer, glPriv, rgbBits,
+ glxPriv->drawId, glxPriv->pGlxPixmap);
+ } else {
+ __glXInitPix(&glPriv->frontBuffer, glPriv, rgbBits,
+ glxPriv->drawId, glxPriv->pGlxPixmap);
+ }
+ }
+
+#if defined(__GL_MAX_AUXBUFFERS) && (__GL_MAX_AUXBUFFERS > 0)
+ if (modes->maxAuxBuffers > 0) {
+ GLint i;
+
+ for (i=0; i < modes->maxAuxBuffers; i++) {
+ if (modes->colorIndexMode) {
+ __glXInitMem(&glPriv->auxBuffer[i], glPriv, modes->indexBits);
+ } else {
+ __glXInitMem(&glPriv->auxBuffer[i], glPriv, rgbBits);
+ }
+ }
+ }
+#endif
+
+ if (modes->haveAccumBuffer) {
+ __glXInitMem(&glPriv->accumBuffer, glPriv, accumBits);
+ }
+ if (modes->haveDepthBuffer) {
+ __glXInitMem(&glPriv->depthBuffer, glPriv, modes->depthBits);
+ }
+ if (modes->haveStencilBuffer) {
+ __glXInitMem(&glPriv->stencilBuffer, glPriv, modes->stencilBits);
+ }
+}
+
+
+#define __GLX_SET_ACCEL_BUFFER_MASK(bm) \
+ if (status == GL_FALSE) return GL_FALSE; \
+ if (status == GL_TRUE) accelBufferMask |= bm; \
+ /* for __GL_BUFFER_FALLBACK don't do anything */
+
+GLboolean
+__glXResizeBuffers(__GLdrawablePrivate *glPriv,
+ GLint x, GLint y, GLuint width, GLuint height)
+{
+ __GLcontextModes *modes;
+ __GLdrawableRegion *glRegion;
+ GLboolean status;
+ GLuint accelBufferMask;
+
+ modes = glPriv->modes;
+ accelBufferMask = 0;
+
+ status = (*glPriv->frontBuffer.resize)(&glPriv->frontBuffer,
+ x, y, width, height, glPriv,
+ __GL_FRONT_BUFFER_MASK);
+ __GLX_SET_ACCEL_BUFFER_MASK(__GL_FRONT_BUFFER_MASK);
+
+ if (modes->doubleBufferMode) {
+ status = (*glPriv->backBuffer.resize)(&glPriv->backBuffer,
+ x, y, width, height, glPriv,
+ __GL_BACK_BUFFER_MASK);
+ __GLX_SET_ACCEL_BUFFER_MASK(__GL_BACK_BUFFER_MASK);
+ }
+
+#if defined(__GL_MAX_AUXBUFFERS) && (__GL_MAX_AUXBUFFERS > 0)
+ if (modes->maxAuxBuffers > 0) {
+ GLint i;
+
+ for (i=0; i < modes->maxAuxBuffers; i++) {
+ status = (*glPriv->auxBuffers[i].resize)(&glPriv->auxBuffer[i],
+ x, y, width, height,
+ glPriv,
+ __GL_AUX_BUFFER_MASK(i));
+ __GLX_SET_ACCEL_BUFFER_MASK(__GL_AUX_BUFFER_MASK(i));
+ }
+ }
+#endif
+
+ if (modes->haveAccumBuffer) {
+ status = (*glPriv->accumBuffer.resize)(&glPriv->accumBuffer,
+ x, y, width, height, glPriv,
+ __GL_ACCUM_BUFFER_MASK);
+ __GLX_SET_ACCEL_BUFFER_MASK(__GL_ACCUM_BUFFER_MASK);
+ }
+
+ if (modes->haveDepthBuffer) {
+ status = (*glPriv->depthBuffer.resize)(&glPriv->depthBuffer,
+ x, y, width, height, glPriv,
+ __GL_DEPTH_BUFFER_MASK);
+ __GLX_SET_ACCEL_BUFFER_MASK(__GL_DEPTH_BUFFER_MASK);
+ }
+
+ if (modes->haveStencilBuffer) {
+ status = (*glPriv->stencilBuffer.resize)(&glPriv->stencilBuffer,
+ x, y, width, height, glPriv,
+ __GL_STENCIL_BUFFER_MASK);
+ __GLX_SET_ACCEL_BUFFER_MASK(__GL_STENCIL_BUFFER_MASK);
+ }
+
+ glPriv->accelBufferMask = accelBufferMask;
+
+ /* finally, update the ownership region */
+ glRegion = &glPriv->ownershipRegion;
+ glRegion->numRects = 1;
+ glRegion->rects[0].x0 = 0;
+ glRegion->rects[0].y0 = 0;
+ glRegion->rects[0].x1 = width;
+ glRegion->rects[0].y1 = height;
+
+ return GL_TRUE;
+}
+
+void
+__glXFreeBuffers(__GLXdrawablePrivate *glxPriv)
+{
+ __GLdrawablePrivate *glPriv = &glxPriv->glPriv;
+#if defined(__GL_MAX_AUXBUFFERS) && (__GL_MAX_AUXBUFFERS > 0)
+ __GLcontextModes *modes = glPriv->modes;
+#endif
+
+ if (glPriv->frontBuffer.free) {
+ (*glPriv->frontBuffer.free)(&glPriv->frontBuffer, glPriv);
+ }
+ if (glPriv->backBuffer.free) {
+ (*glPriv->backBuffer.free)(&glPriv->backBuffer, glPriv);
+ }
+
+#if defined(__GL_MAX_AUXBUFFERS) && (__GL_MAX_AUXBUFFERS > 0)
+ if (modes->maxAuxBuffers > 0) {
+ GLint i;
+
+ for (i=0; i < modes->maxAuxBuffers; i++) {
+ if (glPriv->auxBuffer[i].free) {
+ (*glPriv->auxBuffer[i].free)(&glPriv->auxBuffer[i], glPriv);
+ }
+ }
+ }
+#endif
+
+ if (glPriv->accumBuffer.free) {
+ (*glPriv->accumBuffer.free)(&glPriv->accumBuffer, glPriv);
+ }
+
+ if (glPriv->depthBuffer.free) {
+ (*glPriv->depthBuffer.free)(&glPriv->depthBuffer, glPriv);
+ }
+
+ if (glPriv->stencilBuffer.free) {
+ (*glPriv->stencilBuffer.free)(&glPriv->stencilBuffer, glPriv);
+ }
+}
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