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

1 files changed, 507 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/GL/glx/glxutil.c b/nx-X11/programs/Xserver/GL/glx/glxutil.c
new file mode 100644
index 000000000..03bc19f63
--- /dev/null
+++ b/nx-X11/programs/Xserver/GL/glx/glxutil.c
@@ -0,0 +1,507 @@
+/* $XFree86: xc/programs/Xserver/GL/glx/glxutil.c,v 1.5 2001/03/21 16:29:37 dawes 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.
+**
+*/
+
+#define NEED_REPLIES
+#define FONT_PCF
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "glxserver.h"
+#include <GL/glxtokens.h>
+#include <unpack.h>
+#include <pixmapstr.h>
+#include <windowstr.h>
+#include "glxutil.h"
+#include "glxbuf.h"
+#include "GL/glx_ansic.h"
+#include "GL/internal/glcore.h"
+#include "GL/glxint.h"
+#include "glcontextmodes.h"
+
+/************************************************************************/
+
+void __glXNop(void) {}
+
+/************************************************************************/
+
+/* Memory Allocation for GLX */
+
+void *
+__glXMalloc(size_t size)
+{
+    void *addr;
+
+    if (size == 0) {
+	return NULL;
+    }
+    addr = (void *) xalloc(size);
+    if (addr == NULL) {
+	/* XXX: handle out of memory error */
+	return NULL;
+    }
+    return addr;
+}
+
+void *
+__glXCalloc(size_t numElements, size_t elementSize)
+{
+    void *addr;
+    size_t size;
+
+    if ((numElements == 0) || (elementSize == 0)) {
+	return NULL;
+    }
+    size = numElements * elementSize;
+    addr = (void *) xalloc(size);
+    if (addr == NULL) {
+	/* XXX: handle out of memory error */
+	return NULL;
+    }
+    __glXMemset(addr, 0, size);
+    return addr;
+}
+
+void *
+__glXRealloc(void *addr, size_t newSize)
+{
+    void *newAddr;
+
+    if (addr) {
+	if (newSize == 0) {
+	    xfree(addr);
+	    return NULL;
+	} else {
+	    newAddr = xrealloc(addr, newSize);
+	}
+    } else {
+	if (newSize == 0) {
+	    return NULL;
+	} else {
+	    newAddr = xalloc(newSize);
+	}
+    }
+    if (newAddr == NULL) {
+	return NULL;	/* XXX: out of memory */
+    }
+
+    return newAddr;
+}
+
+void
+__glXFree(void *addr)
+{
+    if (addr) {
+	xfree(addr);
+    }
+}
+
+/************************************************************************/
+/* Context stuff */
+
+
+/*
+** associate a context with a drawable
+*/
+void
+__glXAssociateContext(__GLXcontext *glxc)
+{
+    glxc->nextDrawPriv = glxc->drawPriv->drawGlxc;
+    glxc->drawPriv->drawGlxc = glxc;
+
+    __glXRefDrawablePrivate(glxc->drawPriv);
+    
+
+    glxc->nextReadPriv = glxc->readPriv->readGlxc;
+    glxc->readPriv->readGlxc = glxc;
+
+    __glXRefDrawablePrivate(glxc->readPriv);
+}
+
+/*
+** Deassociate a context from a drawable
+*/
+void
+__glXDeassociateContext(__GLXcontext *glxc)
+{
+    __GLXcontext *curr, *prev;
+
+    prev = NULL;
+    for ( curr = glxc->drawPriv->drawGlxc
+	  ; curr != NULL
+	  ; prev = curr, curr = curr->nextDrawPriv ) {
+	if (curr == glxc) {
+	    /* found context.  Deassociate. */
+	    if (prev == NULL) {
+		glxc->drawPriv->drawGlxc = curr->nextDrawPriv;
+	    } else {
+		prev->nextDrawPriv = curr->nextDrawPriv;
+	    }
+	    curr->nextDrawPriv = NULL;
+	    __glXUnrefDrawablePrivate(glxc->drawPriv);
+	    break;
+	}
+    }
+
+
+    prev = NULL;
+    for ( curr = glxc->readPriv->readGlxc
+	  ; curr != NULL 
+	  ; prev = curr, curr = curr->nextReadPriv ) {
+	if (curr == glxc) {
+	    /* found context.  Deassociate. */
+	    if (prev == NULL) {
+		glxc->readPriv->readGlxc = curr->nextReadPriv;
+	    } else {
+		prev->nextReadPriv = curr->nextReadPriv;
+	    }
+	    curr->nextReadPriv = NULL;
+	    __glXUnrefDrawablePrivate(glxc->readPriv);
+	    break;
+	}
+    }
+}
+
+/************************************************************************/
+
+void
+__glXGetDrawableSize(__GLdrawablePrivate *glPriv,
+		     GLint *x, GLint *y, GLuint *width, GLuint *height)
+{
+    __GLXdrawablePrivate *glxPriv = (__GLXdrawablePrivate *)glPriv->other;
+
+    if (glxPriv) {
+	*x = glxPriv->xorigin;
+	*y = glxPriv->yorigin;
+	*width = glxPriv->width;
+	*height = glxPriv->height;
+    } else {
+	*x = *y = *width = *height = 0;
+    }
+}
+
+GLboolean
+__glXResizeDrawable(__GLdrawablePrivate *glPriv)
+{
+    /* nothing to be done here */
+    return GL_TRUE;
+}
+
+
+/*****************************************************************************/
+/* accessing the drawable private */
+
+static void
+LockDP(__GLdrawablePrivate *glPriv, __GLcontext *gc)
+{
+    __GLinterface *glci = (__GLinterface *) gc;
+    __GLXcontext *glxc = (__GLXcontext *) glci->imports.other;
+
+    /* quick exit test */
+    if ((glxc->pendingState &
+	 (__GLX_PENDING_RESIZE |
+	  __GLX_PENDING_DESTROY |
+	  __GLX_PENDING_SWAP)) == 0x0)
+	return;
+
+    /* some pending state.  Deal with it */
+    if (glxc->pendingState & __GLX_PENDING_RESIZE) {
+	glxc->pendingState &= ~__GLX_PENDING_RESIZE;
+
+	(*glci->exports.notifyResize)(gc);
+	assert((glxc->pendingState & __GLX_PENDING_RESIZE) == 0x0);
+    }
+    if (glxc->pendingState & __GLX_PENDING_DESTROY) {
+	glxc->pendingState &= ~__GLX_PENDING_DESTROY;
+
+	assert(glxc->drawPriv->xorigin == 0);
+	assert(glxc->drawPriv->yorigin == 0);
+	assert(glxc->drawPriv->width == 0);
+	assert(glxc->drawPriv->height == 0);
+	assert(glxc->readPriv->xorigin == 0);
+	assert(glxc->readPriv->yorigin == 0);
+	assert(glxc->readPriv->width == 0);
+	assert(glxc->readPriv->height == 0);
+	(*glci->exports.notifyDestroy)(gc);
+	__glXDeassociateContext(glxc);
+	assert((glxc->pendingState & __GLX_PENDING_DESTROY) == 0x0);
+    }
+    if (glxc->pendingState & __GLX_PENDING_SWAP) {
+
+	glxc->pendingState &= ~__GLX_PENDING_SWAP;
+
+	(*glci->exports.notifySwapBuffers)(gc);
+	assert((glxc->pendingState & __GLX_PENDING_SWAP) == 0x0);
+    }
+}
+
+static void
+UnlockDP(__GLdrawablePrivate *glPriv)
+{
+}
+
+/*****************************************************************************/
+/* Drawable private stuff */
+
+void
+__glXRefDrawablePrivate(__GLXdrawablePrivate *glxPriv)
+{
+    glxPriv->refCount++;
+}
+
+void
+__glXUnrefDrawablePrivate(__GLXdrawablePrivate *glxPriv)
+{
+    glxPriv->refCount--;
+    if (glxPriv->refCount == 0) {
+	__glXDestroyDrawablePrivate(glxPriv);
+    }
+}
+
+__GLXdrawablePrivate *
+__glXCreateDrawablePrivate(DrawablePtr pDraw, XID drawId,
+			   __GLcontextModes *modes)
+{
+    __GLXdrawablePrivate *glxPriv;
+    __GLdrawablePrivate *glPriv;
+    __GLXscreenInfo *pGlxScreen;
+
+    glxPriv = (__GLXdrawablePrivate *) __glXMalloc(sizeof(*glxPriv));
+    __glXMemset(glxPriv, 0, sizeof(__GLXdrawablePrivate));
+
+    glxPriv->type = pDraw->type;
+    glxPriv->pDraw = pDraw;
+    glxPriv->drawId = drawId;
+
+    /* if not a pixmap, lookup will fail, so pGlxPixmap will be NULL */
+    glxPriv->pGlxPixmap = (__GLXpixmap *) 
+	LookupIDByType(drawId, __glXPixmapRes);
+    /* since we are creating the drawablePrivate, drawId should be new */
+    if (!AddResource(drawId, __glXDrawableRes, glxPriv)) {
+	/* oops! */
+	__glXFree(glxPriv);
+	return NULL;
+    }
+
+    /* fill up glPriv */
+    glPriv = &glxPriv->glPriv;
+    glPriv->modes = (__GLcontextModes *) __glXMalloc(sizeof(__GLcontextModes));
+    *glPriv->modes = *modes;
+    glPriv->malloc = __glXMalloc;
+    glPriv->calloc = __glXCalloc;
+    glPriv->realloc = __glXRealloc;
+    glPriv->free = __glXFree;
+    glPriv->addSwapRect = NULL;
+    glPriv->setClipRect = (void (*)(__GLdrawablePrivate *, GLint, GLint, GLsizei, GLsizei)) __glXNop;
+    glPriv->lockDP = LockDP;
+    glPriv->unlockDP = UnlockDP;
+    glPriv->getDrawableSize = __glXGetDrawableSize;
+    glPriv->resize = __glXResizeDrawable;
+    glPriv->other = glxPriv;
+
+    /* allocate a one-rect ownership region */
+    glPriv->ownershipRegion.rects = 
+	(__GLregionRect *)__glXCalloc(1, sizeof(__GLregionRect));
+    glPriv->ownershipRegion.numRects = 1;
+
+    glxPriv->freeBuffers = __glXFreeBuffers;
+    glxPriv->updatePalette = (void (*)(__GLXdrawablePrivate *)) __glXNop;
+
+    pGlxScreen = &__glXActiveScreens[pDraw->pScreen->myNum];
+
+    if (glxPriv->type == DRAWABLE_WINDOW) {
+	VisualID vid = wVisual((WindowPtr)pDraw);
+
+	glxPriv->modes = _gl_context_modes_find_visual( pGlxScreen->modes, vid );
+	__glXFBInitDrawable(glxPriv, modes);
+    } else {
+	glxPriv->modes = glxPriv->pGlxPixmap->modes;
+	__glXPixInitDrawable(glxPriv, modes);
+    }
+
+    /* initialize the core's private buffer information */
+    (*pGlxScreen->createBuffer)(glxPriv);
+
+    return glxPriv;
+}
+
+GLboolean
+__glXDestroyDrawablePrivate(__GLXdrawablePrivate *glxPriv)
+{
+    __GLdrawablePrivate *glPriv = &glxPriv->glPriv;
+
+    /* remove the drawable from the drawable list */
+    FreeResourceByType(glxPriv->drawId, __glXDrawableRes, FALSE);
+
+    /* Have the core free any memory it may have attached to the drawable */
+    if (glPriv->freePrivate) {
+	(*glPriv->freePrivate)(glPriv);
+    }
+
+    /* Free any framebuffer memory attached to the drawable */
+    if (glxPriv->freeBuffers) {
+	(*glxPriv->freeBuffers)(glxPriv);
+    }
+
+    /* Free the drawable Private */
+    __glXFree(glxPriv->glPriv.modes);
+    __glXFree(glxPriv->glPriv.ownershipRegion.rects);
+    __glXFree(glxPriv);
+
+    return GL_TRUE;
+}
+
+__GLXdrawablePrivate *
+__glXFindDrawablePrivate(XID drawId)
+{
+    __GLXdrawablePrivate *glxPriv;
+
+    glxPriv = (__GLXdrawablePrivate *)LookupIDByType(drawId, __glXDrawableRes);
+
+    return glxPriv;
+}
+
+__GLXdrawablePrivate *
+__glXGetDrawablePrivate(DrawablePtr pDraw, XID drawId,
+			__GLcontextModes *modes)
+{
+    __GLXdrawablePrivate *glxPriv;
+
+    glxPriv = __glXFindDrawablePrivate(drawId);
+
+    if (glxPriv == NULL) {
+	glxPriv = __glXCreateDrawablePrivate(pDraw, drawId, modes);
+	if (glxPriv) {
+	    __glXRefDrawablePrivate(glxPriv);
+	}
+    }
+
+    return glxPriv;
+}
+
+void
+__glXCacheDrawableSize(__GLXdrawablePrivate *glxPriv)
+{
+    if (glxPriv) {
+	if (glxPriv->pDraw) {
+	    glxPriv->xorigin = glxPriv->pDraw->x;
+	    glxPriv->yorigin = glxPriv->pDraw->y;
+	    glxPriv->width = glxPriv->pDraw->width;
+	    glxPriv->height = glxPriv->pDraw->height;
+	}
+    }
+}
+
+/*
+** resize/move the drawable.  Called during the actual resize callback
+** to update the drawable side of the buffers
+*/
+GLboolean
+__glXResizeDrawableBuffers(__GLXdrawablePrivate *glxPriv)
+{
+    __GLdrawablePrivate *glPriv = &glxPriv->glPriv;
+    GLint x, y;
+    GLuint w, h;
+#if defined(__GL_ALIGNED_BUFFERS)
+    GLint xAlignment, yAlignment;
+    GLint xOffset, yOffset;
+    GLint xStart, xEnd;
+    GLint yStart, yEnd;
+    GLuint xAlignedMask, yAlignedMask;
+#endif
+    GLboolean status = GL_TRUE;
+
+    __glXCacheDrawableSize(glxPriv);
+
+    w = glxPriv->width;
+    h = glxPriv->height;
+    x = glxPriv->xorigin;
+    y = glxPriv->yorigin;
+
+#if defined(__GL_ALIGNED_BUFFERS)
+    xAlignment = glPriv->xAlignment;
+    yAlignment = glPriv->yAlignment;
+
+    xOffset = x & (xAlignment-1);
+    yOffset = y & (yAlignment-1);
+
+    xAlignedMask = ~(xAlignment-1);
+    yAlignedMask = ~(yAlignment-1);
+
+    xStart = x; xEnd = x+w;
+    yStart = y; yEnd = y+h;
+
+    xStart &= xAlignedMask; 
+    if (xEnd & ~xAlignedMask) { 
+	xEnd = (xEnd&xAlignedMask) + xAlignment;
+    }
+    yStart &= yAlignedMask; 
+    if (yEnd & ~yAlignedMask) { 
+	yEnd = (yEnd&yAlignedMask) + yAlignment;
+    }
+
+    x = xStart; y = yStart;
+    w = xEnd-xStart; h = yEnd-yStart;
+#endif
+
+    if ((x != glPriv->xOrigin) ||
+	(y != glPriv->yOrigin) ||
+#if defined(__GL_ALIGNED_BUFFERS)
+	(xOffset != glPriv->xOffset) ||
+	(yOffset != glPriv->yOffset) ||
+#endif
+	(w != glPriv->width) ||
+	(h != glPriv->height) ||
+	(!w && !h)) {
+	/* set up the glPriv info */
+	glPriv->width = w;
+	glPriv->height = h;
+	glPriv->xOrigin = x;
+	glPriv->yOrigin = y;
+#if defined(__GL_ALIGNED_BUFFERS)
+	glPriv->xOffset = xOffset;
+	glPriv->yOffset = yOffset;
+#endif
+
+	/* notify the buffers */
+	status = __glXResizeBuffers(glPriv, x, y, w, h);
+    }
+
+    return status;
+}
+
+/************************************************************************/
+