diff options
Diffstat (limited to 'xorg-server/glx/glxscreens.c')
| -rw-r--r-- | xorg-server/glx/glxscreens.c | 980 |
1 files changed, 464 insertions, 516 deletions
diff --git a/xorg-server/glx/glxscreens.c b/xorg-server/glx/glxscreens.c index fe7b22d96..c6f5700d5 100644 --- a/xorg-server/glx/glxscreens.c +++ b/xorg-server/glx/glxscreens.c @@ -1,516 +1,464 @@ -/* - * 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> -#else - -#include "glheader.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" - -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"; -static char GLXServerVersion[] = "1.2"; -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 " - ; - -/* - * 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) -{ - XID *installedCmaps, *vids, vid; - int numInstalledCmaps, numVisuals, i, j; - VisualPtr visuals; - ColormapPtr installedCmap; - DepthPtr depth; - int rc; - - 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; - - /* Find the installed colormaps */ - installedCmaps = xalloc (pScreen->maxInstalledCmaps * sizeof (XID)); - if (!installedCmaps) - return NULL; - - numInstalledCmaps = pScreen->ListInstalledColormaps(pScreen, installedCmaps); - - /* realloc the visual array to fit the new one in place */ - numVisuals = pScreen->numVisuals; - visuals = xrealloc(pScreen->visuals, (numVisuals + count) * sizeof(VisualRec)); - if (!visuals) { - xfree(installedCmaps); - return NULL; - } - - vids = xrealloc(depth->vids, (depth->numVids + count) * sizeof(XID)); - if (vids == NULL) { - xfree(installedCmaps); - xfree(visuals); - return NULL; - } - - /* - * Fix up any existing installed colormaps -- we'll assume that - * the only ones created so far have been installed. If this - * isn't true, we'll have to walk the resource database looking - * for all colormaps. - */ - for (i = 0; i < numInstalledCmaps; i++) { - rc = dixLookupResourceByType((pointer *)&installedCmap, - installedCmaps[i], RT_COLORMAP, - serverClient, DixReadAccess); - if (rc != Success) - continue; - j = installedCmap->pVisual - pScreen->visuals; - installedCmap->pVisual = &visuals[j]; - } - - xfree(installedCmaps); - - for (i = 0; i < count; i++) { - vid = FakeClientID(0); - visuals[pScreen->numVisuals + i].vid = vid; - vids[depth->numVids + i] = vid; - } - - pScreen->visuals = visuals; - pScreen->numVisuals += count; - depth->vids = vids; - depth->numVids += count; - - /* 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->GLXversion = xstrdup(GLXServerVersion); - pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions); - - 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->GLXversion); - 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>
+#else
+
+#include "glheader.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"
+
+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";
+static char GLXServerVersion[] = "1.2";
+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 "
+ ;
+
+/*
+ * 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->GLXversion = xstrdup(GLXServerVersion);
+ pGlxScreen->GLXextensions = xstrdup(GLXServerExtensions);
+
+ 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->GLXversion);
+ xfree(screen->GLXextensions);
+ xfree(screen->GLextensions);
+}
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