Some synchronisations with the jturney branch

1 files changed, 474 insertions, 470 deletions

diff --git a/xorg-server/glx/glxscreens.c b/xorg-server/glx/glxscreens.c
index 58d8ee0b4..a9b1b7955 100644
--- a/xorg-server/glx/glxscreens.c
+++ b/xorg-server/glx/glxscreens.c
@@ -1,470 +1,474 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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 including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * 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
- * SILICON GRAPHICS, INC. 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.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <GL/glxtokens.h>
-#include <string.h>
-#include <windowstr.h>
-#include <os.h>
-#include <colormapst.h>
-
-#include "privates.h"
-#include "glxserver.h"
-#include "glxutil.h"
-#include "glxext.h"
-#include "protocol-versions.h"
-
-static int glxScreenPrivateKeyIndex;
-static DevPrivateKey glxScreenPrivateKey = &glxScreenPrivateKeyIndex;
-
-const char GLServerVersion[] = "1.4";
-static const char GLServerExtensions[] = 
-			"GL_ARB_depth_texture "
-			"GL_ARB_draw_buffers "
-			"GL_ARB_fragment_program "
-			"GL_ARB_fragment_program_shadow "
-			"GL_ARB_imaging "
-			"GL_ARB_multisample "
-			"GL_ARB_multitexture "
-			"GL_ARB_occlusion_query "
-			"GL_ARB_point_parameters "
-			"GL_ARB_point_sprite "
-			"GL_ARB_shadow "
-			"GL_ARB_shadow_ambient "
-			"GL_ARB_texture_border_clamp "
-			"GL_ARB_texture_compression "
-			"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_texture_non_power_of_two "
-			"GL_ARB_transpose_matrix "
-			"GL_ARB_vertex_program "
-			"GL_ARB_window_pos "
-			"GL_EXT_abgr "
-			"GL_EXT_bgra "
- 			"GL_EXT_blend_color "
-			"GL_EXT_blend_equation_separate "
-			"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_framebuffer_object "
-			"GL_EXT_multi_draw_arrays "
-			"GL_EXT_packed_pixels "
-			"GL_EXT_paletted_texture "
-			"GL_EXT_point_parameters "
-			"GL_EXT_polygon_offset "
-			"GL_EXT_rescale_normal "
-			"GL_EXT_secondary_color "
-			"GL_EXT_separate_specular_color "
-			"GL_EXT_shadow_funcs "
-			"GL_EXT_shared_texture_palette "
- 			"GL_EXT_stencil_two_side "
-			"GL_EXT_stencil_wrap "
-			"GL_EXT_subtexture "
-			"GL_EXT_texture "
-			"GL_EXT_texture3D "
-			"GL_EXT_texture_compression_dxt1 "
-			"GL_EXT_texture_compression_s3tc "
-			"GL_EXT_texture_edge_clamp "
- 			"GL_EXT_texture_env_add "
- 			"GL_EXT_texture_env_combine "
- 			"GL_EXT_texture_env_dot3 "
- 			"GL_EXT_texture_filter_anisotropic "
-			"GL_EXT_texture_lod "
- 			"GL_EXT_texture_lod_bias "
- 			"GL_EXT_texture_mirror_clamp "
-			"GL_EXT_texture_object "
-			"GL_EXT_texture_rectangle "
-			"GL_EXT_vertex_array "
-			"GL_3DFX_texture_compression_FXT1 "
-			"GL_APPLE_packed_pixels "
-			"GL_ATI_draw_buffers "
-			"GL_ATI_texture_env_combine3 "
-			"GL_ATI_texture_mirror_once "
- 			"GL_HP_occlusion_test "
-			"GL_IBM_texture_mirrored_repeat "
-			"GL_INGR_blend_func_separate "
-			"GL_MESA_pack_invert "
-			"GL_MESA_ycbcr_texture "
-			"GL_NV_blend_square "
-			"GL_NV_depth_clamp "
-			"GL_NV_fog_distance "
-			"GL_NV_fragment_program "
-			"GL_NV_fragment_program_option "
-			"GL_NV_fragment_program2 "
-			"GL_NV_light_max_exponent "
-			"GL_NV_multisample_filter_hint "
-			"GL_NV_point_sprite "
-			"GL_NV_texgen_reflection "
-			"GL_NV_texture_compression_vtc "
-			"GL_NV_texture_env_combine4 "
-			"GL_NV_texture_expand_normal "
-			"GL_NV_texture_rectangle "
-			"GL_NV_vertex_program "
-			"GL_NV_vertex_program1_1 "
-			"GL_NV_vertex_program2 "
-			"GL_NV_vertex_program2_option "
-			"GL_NV_vertex_program3 "
-			"GL_OES_compressed_paletted_texture "
-			"GL_SGI_color_matrix "
-			"GL_SGI_color_table "
-			"GL_SGIS_generate_mipmap "
-			"GL_SGIS_multisample "
-			"GL_SGIS_point_parameters "
-			"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 "
-			"GL_SUN_slice_accum "
-			;
-
-/*
-** We have made the simplifying assuption that the same extensions are 
-** supported across all screens in a multi-screen system.
-*/
-static char GLXServerVendorName[] = "SGI";
-unsigned glxMajorVersion = SERVER_GLX_MAJOR_VERSION;
-unsigned glxMinorVersion = SERVER_GLX_MINOR_VERSION;
-static char GLXServerExtensions[] =
-			"GLX_ARB_multisample "
-			"GLX_EXT_visual_info "
-			"GLX_EXT_visual_rating "
-			"GLX_EXT_import_context "
-                        "GLX_EXT_texture_from_pixmap "
-			"GLX_OML_swap_method "
-			"GLX_SGI_make_current_read "
-#ifndef __APPLE__
-			"GLX_SGIS_multisample "
-                        "GLX_SGIX_hyperpipe "
-                        "GLX_SGIX_swap_barrier "
-#endif
-			"GLX_SGIX_fbconfig "
-			"GLX_SGIX_pbuffer "
-			"GLX_MESA_copy_sub_buffer "
-                        "GLX_INTEL_swap_event"
-			;
-
-/*
- * 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)
-{
-    __GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-
-    pGlxScreen->hyperpipeFuncs = funcs;
-}
-
-void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)
-{
-    __GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-
-    pGlxScreen->swapBarrierFuncs = funcs;
-}
-
-static Bool
-glxCloseScreen (int index, ScreenPtr pScreen)
-{
-    __GLXscreen *pGlxScreen = glxGetScreen(pScreen);
-
-    pScreen->CloseScreen = pGlxScreen->CloseScreen;
-    pScreen->DestroyWindow = pGlxScreen->DestroyWindow;
-
-    pGlxScreen->destroy(pGlxScreen);
-
-    return pScreen->CloseScreen(index, pScreen);
-}
-
-__GLXscreen *
-glxGetScreen(ScreenPtr pScreen)
-{
-    return dixLookupPrivate(&pScreen->devPrivates, glxScreenPrivateKey);
-}
-
-_X_EXPORT void GlxSetVisualConfigs(int nconfigs,
-                         void *configs, void **privates)
-{
-    /* We keep this stub around for the DDX drivers that still
-     * call it. */
-}
-
-GLint glxConvertToXVisualType(int visualType)
-{
-    static const int x_visual_types[] = {
-	TrueColor,   DirectColor,
-	PseudoColor, StaticColor,
-	GrayScale,   StaticGray
-    };
-
-    return ( (unsigned) (visualType - GLX_TRUE_COLOR) < 6 )
-	? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;
-}
-
-/* This code inspired by composite/compinit.c.  We could move this to
- * mi/ and share it with composite.*/
-
-static VisualPtr
-AddScreenVisuals(ScreenPtr pScreen, int count, int d)
-{
-    int		 i;
-    DepthPtr	 depth;
-
-    depth = NULL;
-    for (i = 0; i < pScreen->numDepths; i++) {
-	if (pScreen->allowedDepths[i].depth == d) {
-	    depth = &pScreen->allowedDepths[i];
-	    break;
-	}
-    }
-    if (depth == NULL)
-	return NULL;
-
-    if (ResizeVisualArray(pScreen, count, depth) == FALSE)
-        return NULL;
-
-    /* Return a pointer to the first of the added visuals. */ 
-    return pScreen->visuals + pScreen->numVisuals - count;
-}
-
-static int
-findFirstSet(unsigned int v)
-{
-    int i;
-
-    for (i = 0; i < 32; i++)
-	if (v & (1 << i))
-	    return i;
-
-    return -1;
-}
-
-static void
-initGlxVisual(VisualPtr visual, __GLXconfig *config)
-{
-    int maxBits;
-    maxBits = max(config->redBits, max(config->greenBits, config->blueBits));
-
-    config->visualID = visual->vid;
-    visual->class = glxConvertToXVisualType(config->visualType);
-    visual->bitsPerRGBValue = maxBits;
-    visual->ColormapEntries = 1 << maxBits;
-    visual->nplanes = config->redBits + config->greenBits + config->blueBits;
-
-    visual->redMask = config->redMask;
-    visual->greenMask = config->greenMask;
-    visual->blueMask = config->blueMask;
-    visual->offsetRed = findFirstSet(config->redMask);
-    visual->offsetGreen = findFirstSet(config->greenMask);
-    visual->offsetBlue = findFirstSet(config->blueMask);
-}
-
-static __GLXconfig *
-pickFBConfig(__GLXscreen *pGlxScreen, VisualPtr visual)
-{
-    __GLXconfig *best = NULL, *config;
-    int best_score = 0;
-
-    for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
-	int score = 0;
-
-	if (config->redMask != visual->redMask ||
-	    config->greenMask != visual->greenMask ||
-	    config->blueMask != visual->blueMask)
-	    continue;
-	if (config->visualRating != GLX_NONE)
-	    continue;
-	if (glxConvertToXVisualType(config->visualType) != visual->class)
-	    continue;
-	/* If it's the 32-bit RGBA visual, demand a 32-bit fbconfig. */
-	if (visual->nplanes == 32 && config->rgbBits != 32)
-	    continue;
-	/* Can't use the same FBconfig for multiple X visuals.  I think. */
-	if (config->visualID != 0)
-	    continue;
-
-	if (config->doubleBufferMode > 0)
-	    score += 8;
-	if (config->depthBits > 0)
-	    score += 4;
-	if (config->stencilBits > 0)
-	    score += 2;
-	if (config->alphaBits > 0)
-	    score++;
-
-	if (score > best_score) {
-	    best = config;
-	    best_score = score;
-	}
-    }
-
-    return best;
-}
-
-static Bool
-glxDestroyWindow(WindowPtr pWin)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    __GLXscreen *pGlxScreen = glxGetScreen(pScreen);
-    Bool retval = TRUE;
-
-    FreeResource(pWin->drawable.id, FALSE);
-
-    /* call lower wrapped functions */
-    if (pGlxScreen->DestroyWindow) {
-	/* unwrap */
-	pScreen->DestroyWindow = pGlxScreen->DestroyWindow;
-
-	/* call lower layers */
-	retval = (*pScreen->DestroyWindow)(pWin);
-
-	/* rewrap */
-	pGlxScreen->DestroyWindow = pScreen->DestroyWindow;
-	pScreen->DestroyWindow = glxDestroyWindow;
-    }
-
-    return retval;
-}
-
-void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)
-{
-    __GLXconfig *m;
-    __GLXconfig *config;
-    int i;
-
-    pGlxScreen->pScreen       = pScreen;
-    pGlxScreen->GLextensions  = xstrdup(GLServerExtensions);
-    pGlxScreen->GLXvendor     = xstrdup(GLXServerVendorName);
-    pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions);
-
-    /* All GLX providers must support all of the functionality required for at
-     * least GLX 1.2.  If the provider supports a higher version, the GLXminor
-     * version can be changed in the provider's screen-probe routine.  For
-     * most providers, the screen-probe routine is the caller of this
-     * function.
-     */
-    pGlxScreen->GLXmajor      = 1;
-    pGlxScreen->GLXminor      = 2;
-
-    pGlxScreen->CloseScreen = pScreen->CloseScreen;
-    pScreen->CloseScreen = glxCloseScreen;
-    pGlxScreen->DestroyWindow = pScreen->DestroyWindow;
-    pScreen->DestroyWindow = glxDestroyWindow;
-
-    i = 0;
-    for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) {
-	m->fbconfigID = FakeClientID(0);
-	m->visualID = 0;
-	i++;
-    }
-    pGlxScreen->numFBConfigs = i;
-
-    pGlxScreen->visuals =
-	xcalloc(pGlxScreen->numFBConfigs, sizeof (__GLXconfig *));
-
-    /* First, try to choose featureful FBconfigs for the existing X visuals.
-     * Note that if multiple X visuals end up with the same FBconfig being
-     * chosen, the later X visuals don't get GLX visuals (because we want to
-     * prioritize the root visual being GLX).
-     */
-    for (i = 0; i < pScreen->numVisuals; i++) {
-	VisualPtr visual = &pScreen->visuals[i];
-
-	config = pickFBConfig(pGlxScreen, visual);
-	if (config) {
-	    pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
-	    config->visualID = visual->vid;
-	}
-    }
-
-    /* Then, add new visuals corresponding to all FBconfigs that didn't have
-     * an existing, appropriate visual.
-     */
-    for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {
-	int depth;
-
-	VisualPtr visual;
-
-	if (config->visualID != 0)
-	    continue;
-
-	/* Only count RGB bits and not alpha, as we're not trying to create
-	 * visuals for compositing (that's what the 32-bit composite visual
-	 * set up above is for.
-	 */
-	depth = config->redBits + config->greenBits + config->blueBits;
-
-	/* Make sure that our FBconfig's depth can actually be displayed
-	 * (corresponds to an existing visual).
-	 */
-	for (i = 0; i < pScreen->numVisuals; i++) {
-	    if (depth == pScreen->visuals[i].nplanes)
-		break;
-	}
-	if (i == pScreen->numVisuals)
-	    continue;
-
-	/* Create a new X visual for our FBconfig. */
-	visual = AddScreenVisuals(pScreen, 1, depth);
-	if (visual == NULL)
-	    continue;
-
-	pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;
-	initGlxVisual(visual, config);
-    }
-
-    dixSetPrivate(&pScreen->devPrivates, glxScreenPrivateKey, pGlxScreen);
-}
-
-void __glXScreenDestroy(__GLXscreen *screen)
-{
-    xfree(screen->GLXvendor);
-    xfree(screen->GLXextensions);
-    xfree(screen->GLextensions);
-}
+/*

+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)

+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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 including the dates of first publication and

+ * either this permission notice or a reference to

+ * http://oss.sgi.com/projects/FreeB/

+ * 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

+ * SILICON GRAPHICS, INC. 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.

+ *

+ * Except as contained in this notice, the name of Silicon Graphics, Inc.

+ * shall not be used in advertising or otherwise to promote the sale, use or

+ * other dealings in this Software without prior written authorization from

+ * Silicon Graphics, Inc.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <GL/glxtokens.h>

+#include <string.h>

+#include <windowstr.h>

+#include <os.h>

+#include <colormapst.h>

+

+#include "privates.h"

+#include "glxserver.h"

+#include "glxutil.h"

+#include "glxext.h"

+#include "protocol-versions.h"

+

+static int glxScreenPrivateKeyIndex;

+static DevPrivateKey glxScreenPrivateKey = &glxScreenPrivateKeyIndex;

+

+const char GLServerVersion[] = "1.4";

+static const char GLServerExtensions[] = 

+			"GL_ARB_depth_texture "

+			"GL_ARB_draw_buffers "

+			"GL_ARB_fragment_program "

+			"GL_ARB_fragment_program_shadow "

+			"GL_ARB_imaging "

+			"GL_ARB_multisample "

+			"GL_ARB_multitexture "

+			"GL_ARB_occlusion_query "

+			"GL_ARB_point_parameters "

+			"GL_ARB_point_sprite "

+			"GL_ARB_shadow "

+			"GL_ARB_shadow_ambient "

+			"GL_ARB_texture_border_clamp "

+			"GL_ARB_texture_compression "

+			"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_texture_non_power_of_two "

+			"GL_ARB_transpose_matrix "

+			"GL_ARB_vertex_program "

+			"GL_ARB_window_pos "

+			"GL_EXT_abgr "

+			"GL_EXT_bgra "

+ 			"GL_EXT_blend_color "

+			"GL_EXT_blend_equation_separate "

+			"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_framebuffer_object "

+			"GL_EXT_multi_draw_arrays "

+			"GL_EXT_packed_pixels "

+			"GL_EXT_paletted_texture "

+			"GL_EXT_point_parameters "

+			"GL_EXT_polygon_offset "

+			"GL_EXT_rescale_normal "

+			"GL_EXT_secondary_color "

+			"GL_EXT_separate_specular_color "

+			"GL_EXT_shadow_funcs "

+			"GL_EXT_shared_texture_palette "

+ 			"GL_EXT_stencil_two_side "

+			"GL_EXT_stencil_wrap "

+			"GL_EXT_subtexture "

+			"GL_EXT_texture "

+			"GL_EXT_texture3D "

+			"GL_EXT_texture_compression_dxt1 "

+			"GL_EXT_texture_compression_s3tc "

+			"GL_EXT_texture_edge_clamp "

+ 			"GL_EXT_texture_env_add "

+ 			"GL_EXT_texture_env_combine "

+ 			"GL_EXT_texture_env_dot3 "

+ 			"GL_EXT_texture_filter_anisotropic "

+			"GL_EXT_texture_lod "

+ 			"GL_EXT_texture_lod_bias "

+ 			"GL_EXT_texture_mirror_clamp "

+			"GL_EXT_texture_object "

+			"GL_EXT_texture_rectangle "

+			"GL_EXT_vertex_array "

+			"GL_3DFX_texture_compression_FXT1 "

+			"GL_APPLE_packed_pixels "

+			"GL_ATI_draw_buffers "

+			"GL_ATI_texture_env_combine3 "

+			"GL_ATI_texture_mirror_once "

+ 			"GL_HP_occlusion_test "

+			"GL_IBM_texture_mirrored_repeat "

+			"GL_INGR_blend_func_separate "

+			"GL_MESA_pack_invert "

+			"GL_MESA_ycbcr_texture "

+			"GL_NV_blend_square "

+			"GL_NV_depth_clamp "

+			"GL_NV_fog_distance "

+			"GL_NV_fragment_program "

+			"GL_NV_fragment_program_option "

+			"GL_NV_fragment_program2 "

+			"GL_NV_light_max_exponent "

+			"GL_NV_multisample_filter_hint "

+			"GL_NV_point_sprite "

+			"GL_NV_texgen_reflection "

+			"GL_NV_texture_compression_vtc "

+			"GL_NV_texture_env_combine4 "

+			"GL_NV_texture_expand_normal "

+			"GL_NV_texture_rectangle "

+			"GL_NV_vertex_program "

+			"GL_NV_vertex_program1_1 "

+			"GL_NV_vertex_program2 "

+			"GL_NV_vertex_program2_option "

+			"GL_NV_vertex_program3 "

+			"GL_OES_compressed_paletted_texture "

+			"GL_SGI_color_matrix "

+			"GL_SGI_color_table "

+			"GL_SGIS_generate_mipmap "

+			"GL_SGIS_multisample "

+			"GL_SGIS_point_parameters "

+			"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 "

+			"GL_SUN_slice_accum "

+			;

+

+/*

+** We have made the simplifying assuption that the same extensions are 

+** supported across all screens in a multi-screen system.

+*/

+static char GLXServerVendorName[] = "SGI";

+unsigned glxMajorVersion = SERVER_GLX_MAJOR_VERSION;

+unsigned glxMinorVersion = SERVER_GLX_MINOR_VERSION;

+static char GLXServerExtensions[] =

+			"GLX_ARB_multisample "

+			"GLX_EXT_visual_info "

+			"GLX_EXT_visual_rating "

+			"GLX_EXT_import_context "

+                        "GLX_EXT_texture_from_pixmap "

+			"GLX_OML_swap_method "

+			"GLX_SGI_make_current_read "

+#ifndef __APPLE__

+			"GLX_SGIS_multisample "

+                        "GLX_SGIX_hyperpipe "

+                        "GLX_SGIX_swap_barrier "

+#endif

+			"GLX_SGIX_fbconfig "

+			"GLX_SGIX_pbuffer "

+			"GLX_MESA_copy_sub_buffer "

+                        "GLX_INTEL_swap_event"

+			;

+

+/*

+ * 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)

+{

+    __GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+

+    pGlxScreen->hyperpipeFuncs = funcs;

+}

+

+void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)

+{

+    __GLXscreen *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+

+    pGlxScreen->swapBarrierFuncs = funcs;

+}

+

+static Bool

+glxCloseScreen (int index, ScreenPtr pScreen)

+{

+    __GLXscreen *pGlxScreen = glxGetScreen(pScreen);

+

+    pScreen->CloseScreen = pGlxScreen->CloseScreen;

+    pScreen->DestroyWindow = pGlxScreen->DestroyWindow;

+

+    pGlxScreen->destroy(pGlxScreen);

+

+    return pScreen->CloseScreen(index, pScreen);

+}

+

+__GLXscreen *

+glxGetScreen(ScreenPtr pScreen)

+{

+    return dixLookupPrivate(&pScreen->devPrivates, glxScreenPrivateKey);

+}

+

+_X_EXPORT void GlxSetVisualConfigs(int nconfigs,

+                         void *configs, void **privates)

+{

+    /* We keep this stub around for the DDX drivers that still

+     * call it. */

+}

+

+GLint glxConvertToXVisualType(int visualType)

+{

+    static const int x_visual_types[] = {

+	TrueColor,   DirectColor,

+	PseudoColor, StaticColor,

+	GrayScale,   StaticGray

+    };

+

+    return ( (unsigned) (visualType - GLX_TRUE_COLOR) < 6 )

+	? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;

+}

+

+/* This code inspired by composite/compinit.c.  We could move this to

+ * mi/ and share it with composite.*/

+

+static VisualPtr

+AddScreenVisuals(ScreenPtr pScreen, int count, int d)

+{

+    int		 i;

+    DepthPtr	 depth;

+

+    depth = NULL;

+    for (i = 0; i < pScreen->numDepths; i++) {

+	if (pScreen->allowedDepths[i].depth == d) {

+	    depth = &pScreen->allowedDepths[i];

+	    break;

+	}

+    }

+    if (depth == NULL)

+	return NULL;

+

+    if (ResizeVisualArray(pScreen, count, depth) == FALSE)

+        return NULL;

+

+    /* Return a pointer to the first of the added visuals. */ 

+    return pScreen->visuals + pScreen->numVisuals - count;

+}

+

+static int

+findFirstSet(unsigned int v)

+{

+    int i;

+

+    for (i = 0; i < 32; i++)

+	if (v & (1 << i))

+	    return i;

+

+    return -1;

+}

+

+static void

+initGlxVisual(VisualPtr visual, __GLXconfig *config)

+{

+    int maxBits;

+    maxBits = max(config->redBits, max(config->greenBits, config->blueBits));

+

+    config->visualID = visual->vid;

+    visual->class = glxConvertToXVisualType(config->visualType);

+    visual->bitsPerRGBValue = maxBits;

+    visual->ColormapEntries = 1 << maxBits;

+    visual->nplanes = config->redBits + config->greenBits + config->blueBits;

+

+    visual->redMask = config->redMask;

+    visual->greenMask = config->greenMask;

+    visual->blueMask = config->blueMask;

+    visual->offsetRed = findFirstSet(config->redMask);

+    visual->offsetGreen = findFirstSet(config->greenMask);

+    visual->offsetBlue = findFirstSet(config->blueMask);

+}

+

+static __GLXconfig *

+pickFBConfig(__GLXscreen *pGlxScreen, VisualPtr visual)

+{

+    __GLXconfig *best = NULL, *config;

+    int best_score = 0;

+

+    for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {

+	int score = 0;

+

+	if (config->redMask != visual->redMask ||

+	    config->greenMask != visual->greenMask ||

+	    config->blueMask != visual->blueMask)

+	    continue;

+	if (config->visualRating != GLX_NONE)

+	    continue;

+	if (glxConvertToXVisualType(config->visualType) != visual->class)

+	    continue;

+	/* If it's the 32-bit RGBA visual, demand a 32-bit fbconfig. */

+	if (visual->nplanes == 32 && config->rgbBits != 32)

+	    continue;

+	/* Can't use the same FBconfig for multiple X visuals.  I think. */

+	if (config->visualID != 0)

+	    continue;

+

+	if (config->doubleBufferMode > 0)

+	    score += 8;

+	if (config->depthBits > 0)

+	    score += 4;

+	if (config->stencilBits > 0)

+	    score += 2;

+	if (config->alphaBits > 0)

+	    score++;

+

+	if (score > best_score) {

+	    best = config;

+	    best_score = score;

+	}

+    }

+

+    return best;

+}

+

+static Bool

+glxDestroyWindow(WindowPtr pWin)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    __GLXscreen *pGlxScreen = glxGetScreen(pScreen);

+    Bool retval = TRUE;

+

+    FreeResource(pWin->drawable.id, FALSE);

+

+    /* call lower wrapped functions */

+    if (pGlxScreen->DestroyWindow) {

+	/* unwrap */

+	pScreen->DestroyWindow = pGlxScreen->DestroyWindow;

+

+	/* call lower layers */

+	retval = (*pScreen->DestroyWindow)(pWin);

+

+	/* rewrap */

+	pGlxScreen->DestroyWindow = pScreen->DestroyWindow;

+	pScreen->DestroyWindow = glxDestroyWindow;

+    }

+

+    return retval;

+}

+

+void __glXScreenInit(__GLXscreen *pGlxScreen, ScreenPtr pScreen)

+{

+    __GLXconfig *m;

+    __GLXconfig *config;

+    int i;

+

+    pGlxScreen->pScreen       = pScreen;

+    pGlxScreen->GLextensions  = xstrdup(GLServerExtensions);

+    pGlxScreen->GLXvendor     = xstrdup(GLXServerVendorName);

+    pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions);

+

+    /* All GLX providers must support all of the functionality required for at

+     * least GLX 1.2.  If the provider supports a higher version, the GLXminor

+     * version can be changed in the provider's screen-probe routine.  For

+     * most providers, the screen-probe routine is the caller of this

+     * function.

+     */

+    pGlxScreen->GLXmajor      = 1;

+    pGlxScreen->GLXminor      = 2;

+

+    pGlxScreen->CloseScreen = pScreen->CloseScreen;

+    pScreen->CloseScreen = glxCloseScreen;

+    pGlxScreen->DestroyWindow = pScreen->DestroyWindow;

+    pScreen->DestroyWindow = glxDestroyWindow;

+

+    i = 0;

+    for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next) {

+	m->fbconfigID = FakeClientID(0);

+	m->visualID = 0;

+	i++;

+    }

+    pGlxScreen->numFBConfigs = i;

+

+    pGlxScreen->visuals =

+	xcalloc(pGlxScreen->numFBConfigs, sizeof (__GLXconfig *));

+

+    /* First, try to choose featureful FBconfigs for the existing X visuals.

+     * Note that if multiple X visuals end up with the same FBconfig being

+     * chosen, the later X visuals don't get GLX visuals (because we want to

+     * prioritize the root visual being GLX).

+     */

+    for (i = 0; i < pScreen->numVisuals; i++) {

+	VisualPtr visual = &pScreen->visuals[i];

+

+	config = pickFBConfig(pGlxScreen, visual);

+	if (config) {

+	    pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;

+	    config->visualID = visual->vid;

+	}

+    }

+

+    /* Then, add new visuals corresponding to all FBconfigs that didn't have

+     * an existing, appropriate visual.

+     */

+    for (config = pGlxScreen->fbconfigs; config != NULL; config = config->next) {

+	int depth;

+

+	VisualPtr visual;

+

+	if (config->visualID != 0)

+	    continue;

+

+	/* Only count RGB bits and not alpha, as we're not trying to create

+	 * visuals for compositing (that's what the 32-bit composite visual

+	 * set up above is for.

+	 */

+	depth = config->redBits + config->greenBits + config->blueBits;

+

+	/* Make sure that our FBconfig's depth can actually be displayed

+	 * (corresponds to an existing visual).

+	 */

+	for (i = 0; i < pScreen->numVisuals; i++) {

+	    if (depth == pScreen->visuals[i].nplanes)

+		break;

+	}

+	if (i == pScreen->numVisuals)

+	    continue;

+

+        /* Make sure the FBconfig supports window drawables */

+        if (!(config->drawableType & GLX_WINDOW_BIT))

+          continue;

+

+	/* Create a new X visual for our FBconfig. */

+	visual = AddScreenVisuals(pScreen, 1, depth);

+	if (visual == NULL)

+	    continue;

+

+	pGlxScreen->visuals[pGlxScreen->numVisuals++] = config;

+	initGlxVisual(visual, config);

+    }

+

+    dixSetPrivate(&pScreen->devPrivates, glxScreenPrivateKey, pGlxScreen);

+}

+

+void __glXScreenDestroy(__GLXscreen *screen)

+{

+    xfree(screen->GLXvendor);

+    xfree(screen->GLXextensions);

+    xfree(screen->GLextensions);

+}