From 1ad46cbf3a9963f3d6d8c687480a80d359ec15f8 Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 28 Feb 2010 19:11:59 +0000 Subject: Some synchronisations with the jturney branch --- xorg-server/glx/glxscreens.c | 944 ++++++++++++++++++++++--------------------- 1 file changed, 474 insertions(+), 470 deletions(-) (limited to 'xorg-server/glx') 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 -#endif - -#include -#include -#include -#include -#include - -#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 +#endif + +#include +#include +#include +#include +#include + +#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); +} -- cgit v1.2.3