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, 378 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/GL/glx/glxscreens.c b/nx-X11/programs/Xserver/GL/glx/glxscreens.c
new file mode 100644
index 000000000..58b38b1a2
--- /dev/null
+++ b/nx-X11/programs/Xserver/GL/glx/glxscreens.c
@@ -0,0 +1,378 @@
+/* $XFree86: xc/programs/Xserver/GL/glx/glxscreens.c,v 1.14 2004/02/09 23:46:31 alanh 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
+
+#ifdef IN_MODULE
+#include <xf86_ansic.h>
+#else
+#include <string.h>
+#include <signal.h>
+#endif
+
+#include <windowstr.h>
+
+#include "glxserver.h"
+#include "glxutil.h"
+#include "glxext.h"
+
+const char GLServerVersion[] = "1.2";
+static const char GLServerExtensions[] = 
+			"GL_ARB_depth_texture "
+			"GL_ARB_imaging "
+			"GL_ARB_multitexture "
+			"GL_ARB_point_parameters "
+			"GL_ARB_point_sprite "
+			"GL_ARB_shadow "
+			"GL_ARB_shadow_ambient "
+			"GL_ARB_texture_border_clamp "
+			"GL_ARB_texture_cube_map "
+			"GL_ARB_texture_env_add "
+			"GL_ARB_texture_env_combine "
+			"GL_ARB_texture_env_crossbar "
+			"GL_ARB_texture_env_dot3 "
+			"GL_ARB_texture_mirrored_repeat "
+			"GL_ARB_transpose_matrix "
+			"GL_ARB_window_pos "
+			"GL_EXT_abgr "
+			"GL_EXT_bgra "
+ 			"GL_EXT_blend_color "
+			"GL_EXT_blend_func_separate "
+			"GL_EXT_blend_logic_op "
+ 			"GL_EXT_blend_minmax "
+ 			"GL_EXT_blend_subtract "
+			"GL_EXT_clip_volume_hint "
+			"GL_EXT_copy_texture "
+			"GL_EXT_draw_range_elements "
+			"GL_EXT_fog_coord "
+			"GL_EXT_multi_draw_arrays "
+			"GL_EXT_packed_pixels "
+			"GL_EXT_polygon_offset "
+			"GL_EXT_rescale_normal "
+			"GL_EXT_secondary_color "
+			"GL_EXT_separate_specular_color "
+			"GL_EXT_shadow_funcs "
+ 			"GL_EXT_stencil_two_side "
+			"GL_EXT_stencil_wrap "
+			"GL_EXT_subtexture "
+			"GL_EXT_texture "
+			"GL_EXT_texture3D "
+			"GL_EXT_texture_edge_clamp "
+ 			"GL_EXT_texture_env_add "
+ 			"GL_EXT_texture_env_combine "
+ 			"GL_EXT_texture_env_dot3 "
+			"GL_EXT_texture_lod "
+ 			"GL_EXT_texture_lod_bias "
+			"GL_EXT_texture_object "
+			"GL_EXT_texture_rectangle "
+			"GL_EXT_vertex_array "
+			"GL_APPLE_packed_pixels "
+			"GL_ATI_texture_mirror_once "
+			"GL_ATI_texture_env_combine3 "
+ 			"GL_HP_occlusion_test "
+			"GL_IBM_texture_mirrored_repeat "
+			"GL_MESA_pack_invert "
+			"GL_MESA_ycbcr_texture "
+			"GL_NV_blend_square "
+			"GL_NV_point_sprite "
+			"GL_NV_texgen_reflection "
+			"GL_NV_texture_rectangle "
+			"GL_SGIS_generate_mipmap "
+			"GL_SGIS_texture_border_clamp "
+			"GL_SGIS_texture_edge_clamp "
+			"GL_SGIS_texture_lod "
+			"GL_SGIX_depth_texture "
+			"GL_SGIX_shadow "
+			"GL_SGIX_shadow_ambient "
+			;
+
+/*
+** We have made the simplifying assuption that the same extensions are 
+** supported across all screens in a multi-screen system.
+*/
+static char GLXServerVendorName[] = "SGI";
+static char GLXServerVersion[] = "1.2";
+static char GLXServerExtensions[] =
+			"GLX_ARB_multisample "
+			"GLX_EXT_visual_info "
+			"GLX_EXT_visual_rating "
+			"GLX_EXT_import_context "
+			"GLX_OML_swap_method "
+			"GLX_SGI_make_current_read "
+#ifndef __DARWIN__
+			"GLX_SGIS_multisample "
+                        "GLX_SGIX_hyperpipe "
+                        "GLX_SGIX_swap_barrier "
+#endif
+			"GLX_SGIX_fbconfig "
+			;
+
+/*
+ * __glDDXScreenInfo comes from GLcore, so we can't resolve this symbol at
+ * module open time.  Leave a placeholder, and fill this in when we first
+ * need it (in __glXScreenInit).  XXX Why make this an array?
+ */
+static __GLXscreenInfo *__glXScreens[] = {
+    NULL /* &__glDDXScreenInfo */ ,
+};
+
+static GLint __glXNumStaticScreens =
+	(sizeof __glXScreens / sizeof __glXScreens[0]);
+
+__GLXscreenInfo *__glXActiveScreens;
+GLint __glXNumActiveScreens;
+
+__GLXSwapBarrierExtensionFuncs *__glXSwapBarrierFuncs = NULL;
+static int __glXNumSwapBarrierFuncs = 0;
+__GLXHyperpipeExtensionFuncs *__glXHyperpipeFuncs = NULL;
+static int __glXNumHyperpipeFuncs = 0;
+
+
+RESTYPE __glXDrawableRes;
+
+__GLXscreenInfo *__glXgetActiveScreen(int num) {
+	return &__glXActiveScreens[num];
+}
+
+/*
+** Destroy routine that gets called when a drawable is freed.  A drawable
+** contains the ancillary buffers needed for rendering.
+*/
+static Bool DrawableGone(__GLXdrawablePrivate *glxPriv, XID xid)
+{
+    __GLXcontext *cx, *cx1;
+
+    /*
+    ** Use glxPriv->type to figure out what kind of drawable this is. Don't
+    ** use glxPriv->pDraw->type because by the time this routine is called,
+    ** the pDraw might already have been freed.
+    */
+    if (glxPriv->type == DRAWABLE_WINDOW) {
+	/*
+	** When a window is destroyed, notify all context bound to 
+	** it, that there are no longer bound to anything.
+	*/
+	for (cx = glxPriv->drawGlxc; cx; cx = cx1) {
+	    cx1 = cx->nextDrawPriv;
+	    cx->pendingState |= __GLX_PENDING_DESTROY;
+	}
+
+	for (cx = glxPriv->readGlxc; cx; cx = cx1) {
+	    cx1 = cx->nextReadPriv;
+	    cx->pendingState |= __GLX_PENDING_DESTROY;
+	}
+    }
+
+    /*
+    ** set the size to 0, so that context that may still be using this 
+    ** drawable not do anything harmful
+    */
+    glxPriv->xorigin = 0;
+    glxPriv->yorigin = 0;
+    glxPriv->width = 0;
+    glxPriv->height = 0;
+
+    __glXUnrefDrawablePrivate(glxPriv);
+
+    return True;
+}
+
+/*
+** This hook gets called when a window moves or changes size.
+*/
+static Bool PositionWindow(WindowPtr pWin, int x, int y)
+{
+    ScreenPtr pScreen;
+    __GLXcontext *glxc;
+    __GLXdrawablePrivate *glxPriv;
+    Bool ret;
+
+    /*
+    ** Call wrapped position window routine
+    */
+    pScreen = pWin->drawable.pScreen;
+    pScreen->PositionWindow =
+	__glXActiveScreens[pScreen->myNum].WrappedPositionWindow;
+    ret = (*pScreen->PositionWindow)(pWin, x, y);
+    pScreen->PositionWindow = PositionWindow;
+
+    /*
+    ** Tell all contexts rendering into this window that the window size
+    ** has changed.
+    */
+    glxPriv = (__GLXdrawablePrivate *) LookupIDByType(pWin->drawable.id,
+						      __glXDrawableRes);
+    if (glxPriv == NULL) {
+	/*
+	** This window is not being used by the OpenGL.
+	*/
+	return ret;
+    }
+
+    /*
+    ** resize the drawable
+    */
+    /* first change the drawable size */
+    if (__glXResizeDrawableBuffers(glxPriv) == GL_FALSE) {
+	/* resize failed! */
+	/* XXX: what can we possibly do here? */
+	ret = False;
+    }
+
+    /* mark contexts as needing resize */
+
+    for (glxc = glxPriv->drawGlxc; glxc; glxc = glxc->nextDrawPriv) {
+	glxc->pendingState |= __GLX_PENDING_RESIZE;
+    }
+
+    for (glxc = glxPriv->readGlxc; glxc; glxc = glxc->nextReadPriv) {
+	glxc->pendingState |= __GLX_PENDING_RESIZE;
+    }
+
+    return ret;
+}
+
+/*
+** Wrap our own PositionWindow routine around the server's, so we can
+** be notified when a window changes size
+*/
+static void wrapPositionWindow(int screen)
+{
+    ScreenPtr pScreen = screenInfo.screens[screen];
+
+    __glXActiveScreens[screen].WrappedPositionWindow = pScreen->PositionWindow;
+    pScreen->PositionWindow = PositionWindow;
+}
+
+/*
+ * If your DDX driver wants to register support for swap barriers or hyperpipe
+ * topology, it should call __glXHyperpipeInit() or __glXSwapBarrierInit()
+ * with a dispatch table of functions to handle the requests.   In the XFree86
+ * DDX, for example, you would call these near the bottom of the driver's
+ * ScreenInit method, after DRI has been initialized.
+ *
+ * This should be replaced with a better method when we teach the server how
+ * to load DRI drivers.
+ */
+
+void __glXHyperpipeInit(int screen, __GLXHyperpipeExtensionFuncs *funcs)
+{
+    if (__glXNumHyperpipeFuncs < screen + 1) {
+        __glXHyperpipeFuncs = __glXRealloc(__glXHyperpipeFuncs,
+                                           (screen+1) * sizeof(__GLXHyperpipeExtensionFuncs));
+        __glXNumHyperpipeFuncs = screen + 1;
+    }
+
+    __glXHyperpipeFuncs[screen].queryHyperpipeNetworkFunc =
+        *funcs->queryHyperpipeNetworkFunc;
+    __glXHyperpipeFuncs[screen].queryHyperpipeConfigFunc =
+        *funcs->queryHyperpipeConfigFunc;
+    __glXHyperpipeFuncs[screen].destroyHyperpipeConfigFunc =
+        *funcs->destroyHyperpipeConfigFunc;
+    __glXHyperpipeFuncs[screen].hyperpipeConfigFunc =
+        *funcs->hyperpipeConfigFunc;
+}
+
+void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)
+{
+    if (__glXNumSwapBarrierFuncs < screen + 1) {
+        __glXSwapBarrierFuncs = __glXRealloc(__glXSwapBarrierFuncs,
+                                           (screen+1) * sizeof(__GLXSwapBarrierExtensionFuncs));
+        __glXNumSwapBarrierFuncs = screen + 1;
+    }
+
+    __glXSwapBarrierFuncs[screen].bindSwapBarrierFunc =
+        funcs->bindSwapBarrierFunc;
+    __glXSwapBarrierFuncs[screen].queryMaxSwapBarriersFunc =
+        funcs->queryMaxSwapBarriersFunc;
+}
+
+void __glXScreenInit(GLint numscreens)
+{
+    GLint i,j;
+
+    __glXScreens[0] = __glXglDDXScreenInfo(); /* from GLcore */
+
+    /*
+    ** This alloc has to work or else the server might as well core dump.
+    */
+    __glXActiveScreens =
+      (__GLXscreenInfo *) __glXMalloc(sizeof(__GLXscreenInfo) * numscreens);
+    
+    for (i=0; i < numscreens; i++) {
+	/*
+	** Probe each static screen to see which exists.
+	*/
+	for (j=0; j < __glXNumStaticScreens; j++) {
+	    if ((*__glXScreens[j]->screenProbe)(i)) {
+		__glXActiveScreens[i] = *__glXScreens[j];
+
+		__glXActiveScreens[i].numUsableVisuals = __glXActiveScreens[i].numVisuals;
+		__glXActiveScreens[i].GLextensions = __glXStrdup(GLServerExtensions);
+		__glXActiveScreens[i].GLXvendor = __glXStrdup(GLXServerVendorName);
+		__glXActiveScreens[i].GLXversion = __glXStrdup(GLXServerVersion);
+		__glXActiveScreens[i].GLXextensions = __glXStrdup(GLXServerExtensions);
+
+		__glXDrawableRes = CreateNewResourceType((DeleteType)DrawableGone);
+		wrapPositionWindow(i);
+	    }
+	}
+    }
+    __glXNumActiveScreens = numscreens;
+}
+
+void __glXScreenReset(void)
+{
+  int i;
+
+  for (i = 0; i < __glXNumActiveScreens; i++) {
+      __glXFree(__glXActiveScreens[i].GLXvendor);
+      __glXFree(__glXActiveScreens[i].GLXversion);
+      __glXFree(__glXActiveScreens[i].GLXextensions);
+      __glXFree(__glXActiveScreens[i].GLextensions);
+  }
+  xfree(__glXActiveScreens);
+  xfree(__glXHyperpipeFuncs);
+  xfree(__glXSwapBarrierFuncs);
+  __glXNumHyperpipeFuncs = 0;
+  __glXNumSwapBarrierFuncs = 0;
+  __glXHyperpipeFuncs = NULL;
+  __glXSwapBarrierFuncs = NULL;
+  __glXActiveScreens = NULL;
+  __glXNumActiveScreens = 0;
+}