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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/programs/Xserver/GL/glx/glxfb.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/programs/Xserver/GL/glx/glxfb.c')
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diff --git a/nx-X11/programs/Xserver/GL/glx/glxfb.c b/nx-X11/programs/Xserver/GL/glx/glxfb.c
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+/* $XFree86$ */
+/*
+** 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.
+**
+*/
+
+/*
+** An implementation of a buffer which is part of the front buffer
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "glxserver.h"
+#include "glxutil.h"
+#include "glxfb.h"
+
+#include <gcstruct.h>
+
+/* so we don't include glmath.h */
+extern GLuint __glFloorLog2(GLuint);
+
+typedef struct __GLFBbufferInfoRec {
+ GCPtr pGC;
+} __GLFBbufferInfo;
+
+extern PixmapPtr __glXPrivPixGetPtr(__GLdrawableBuffer *);
+
+/* ---------------------------------------------------------- */
+
+static GLboolean
+Resize(__GLdrawableBuffer *buf,
+ GLint x, GLint y, GLuint width, GLuint height,
+ __GLdrawablePrivate *glPriv, GLuint bufferMask)
+{
+ buf->width = width;
+ buf->height = height;
+ buf->byteWidth = width * buf->elementSize;
+ buf->outerWidth = width;
+
+ return GL_TRUE;
+}
+
+static void
+Lock(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv)
+{
+}
+
+static void
+Unlock(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv)
+{
+}
+
+/*
+** Do a swap buffer with
+** a memory surface as a back buffer
+** a FB surface as a front buffer
+*/
+GLboolean
+__glXFBMemSwapBuffers(__GLXdrawablePrivate *glxPriv)
+{
+ __GLdrawablePrivate *glPriv = &glxPriv->glPriv;
+ __GLdrawableBuffer *front = &glPriv->frontBuffer;
+ __GLdrawableBuffer *back = &glPriv->backBuffer;
+ __GLFBbufferInfo *bufferInfo;
+ GCPtr pGC;
+ GLint width, height, depth, pad;
+ GLubyte *buf;
+
+ bufferInfo = (__GLFBbufferInfo *) front->other;
+ pGC = bufferInfo->pGC;
+
+ width = back->width;
+ height = back->height;
+ depth = back->depth;
+ buf = back->base;
+ pad = back->outerWidth - back->width; /* back buffer padding */
+ /* adjust buffer padding. X wants left, GL has right */
+ buf -= pad;
+
+ ValidateGC(glxPriv->pDraw, pGC);
+ (*pGC->ops->PutImage)(glxPriv->pDraw, pGC,
+ depth,
+ 0, 0, width, height,
+ pad, ZPixmap,
+ (char *)buf);
+
+ return GL_TRUE;
+}
+
+static void
+Free(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv)
+{
+ __GLFBbufferInfo *bufferInfo;
+
+ bufferInfo = (__GLFBbufferInfo *) buf->other;
+
+ if (bufferInfo->pGC) {
+ FreeScratchGC(bufferInfo->pGC);
+ }
+
+ __glXFree(bufferInfo);
+ buf->other = NULL;
+}
+
+/*
+** function to return the X GC of this buffer (to be used by DDX)
+*/
+GCPtr __glXFBGetGC(__GLdrawableBuffer *buf)
+{
+ __GLFBbufferInfo *bufferInfo;
+
+ bufferInfo = (__GLFBbufferInfo *) buf->other;
+
+ if (bufferInfo) {
+ return bufferInfo->pGC;
+ } else {
+ return NULL;
+ }
+}
+
+
+void
+__glXInitFB(__GLdrawableBuffer *buf, __GLdrawablePrivate *glPriv, GLint bits)
+{
+ __GLFBbufferInfo *bufferInfo;
+ __GLXdrawablePrivate *glxPriv = (__GLXdrawablePrivate *) glPriv->other;
+ GCPtr pGC;
+
+ buf->depth = bits;
+ buf->width = buf->height = 0; /* to be filled during Update */
+ buf->handle = buf->base = NULL; /* to be filled during Update */
+ buf->size = 0;
+ buf->byteWidth = 0;
+ buf->elementSize = ((bits-1) / 8) + 1;
+ buf->elementSizeLog2 = __glFloorLog2(buf->elementSize);
+
+ buf->resize = Resize;
+ buf->lock = Lock;
+ buf->unlock = Unlock;
+ buf->fill = NULL;
+ buf->free = Free;
+
+ /* allocate local information */
+ bufferInfo = (__GLFBbufferInfo *) __glXMalloc(sizeof(__GLFBbufferInfo));
+ buf->other = (void *) bufferInfo;
+
+ pGC = CreateScratchGC(glxPriv->pDraw->pScreen,
+ glxPriv->pDraw->depth);
+ bufferInfo->pGC = pGC;
+ (*pGC->funcs->ChangeClip)(pGC, CT_NONE, NULL, 0);
+}