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Diffstat (limited to 'src/hgl/GLRendererRoster.cpp')
| -rw-r--r-- | src/hgl/GLRendererRoster.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/hgl/GLRendererRoster.cpp b/src/hgl/GLRendererRoster.cpp new file mode 100644 index 00000000000..1712a871c98 --- /dev/null +++ b/src/hgl/GLRendererRoster.cpp @@ -0,0 +1,224 @@ +/* + * Copyright 2006-2012 Haiku, Inc. All Rights Reserved. + * Distributed under the terms of the MIT License. + * + * Authors: + * Philippe Houdoin <philippe.houdoin@free.fr> + * Alexander von Gluck IV <kallisti5@unixzen.com> + */ + + +#include <driver_settings.h> +#include <image.h> + +#include <kernel/image.h> +#include <system/safemode_defs.h> + +#include <Directory.h> +#include <FindDirectory.h> +#include <Path.h> +#include <String.h> +#include "GLDispatcher.h" +#include "GLRendererRoster.h" + +#include <new> +#include <string.h> + + +extern "C" status_t _kern_get_safemode_option(const char* parameter, + char* buffer, size_t* _bufferSize); + + +GLRendererRoster::GLRendererRoster(BGLView* view, ulong options) + : + fNextID(0), + fView(view), + fOptions(options), + fSafeMode(false), + fABISubDirectory(NULL) +{ + char parameter[32]; + size_t parameterLength = sizeof(parameter); + + if (_kern_get_safemode_option(B_SAFEMODE_SAFE_MODE, + parameter, ¶meterLength) == B_OK) { + if (!strcasecmp(parameter, "enabled") || !strcasecmp(parameter, "on") + || !strcasecmp(parameter, "true") || !strcasecmp(parameter, "yes") + || !strcasecmp(parameter, "enable") || !strcmp(parameter, "1")) + fSafeMode = true; + } + + if (_kern_get_safemode_option(B_SAFEMODE_DISABLE_USER_ADD_ONS, + parameter, ¶meterLength) == B_OK) { + if (!strcasecmp(parameter, "enabled") || !strcasecmp(parameter, "on") + || !strcasecmp(parameter, "true") || !strcasecmp(parameter, "yes") + || !strcasecmp(parameter, "enable") || !strcmp(parameter, "1")) + fSafeMode = true; + } + + // We might run in compatibility mode on a system with a different ABI. The + // renderers matching our ABI can usually be found in respective + // subdirectories of the opengl add-ons directories. + system_info info; + if (get_system_info(&info) == B_OK + && (info.abi & B_HAIKU_ABI_MAJOR) + != (B_HAIKU_ABI & B_HAIKU_ABI_MAJOR)) { + switch (B_HAIKU_ABI & B_HAIKU_ABI_MAJOR) { + case B_HAIKU_ABI_GCC_2: + fABISubDirectory = "gcc2"; + break; + case B_HAIKU_ABI_GCC_4: + fABISubDirectory = "gcc4"; + break; + } + } + + AddDefaultPaths(); +} + + +GLRendererRoster::~GLRendererRoster() +{ + +} + + +BGLRenderer* +GLRendererRoster::GetRenderer(int32 id) +{ + RendererMap::const_iterator iterator = fRenderers.find(id); + if (iterator == fRenderers.end()) + return NULL; + + struct renderer_item item = iterator->second; + return item.renderer; +} + + +void +GLRendererRoster::AddDefaultPaths() +{ + // add user directories first, so that they can override system renderers + const directory_which paths[] = { + B_USER_NONPACKAGED_ADDONS_DIRECTORY, + B_USER_ADDONS_DIRECTORY, + B_SYSTEM_ADDONS_DIRECTORY, + }; + + for (uint32 i = fSafeMode ? 4 : 0; + i < sizeof(paths) / sizeof(paths[0]); i++) { + BPath path; + status_t status = find_directory(paths[i], &path, true); + if (status == B_OK && path.Append("opengl") == B_OK) + AddPath(path.Path()); + } +} + + +status_t +GLRendererRoster::AddPath(const char* path) +{ + BDirectory directory(path); + status_t status = directory.InitCheck(); + if (status < B_OK) + return status; + + // if a subdirectory for our ABI exists, use that instead + if (fABISubDirectory != NULL) { + BEntry entry(&directory, fABISubDirectory); + if (entry.IsDirectory()) { + status = directory.SetTo(&entry); + if (status != B_OK) + return status; + } + } + + node_ref nodeRef; + status = directory.GetNodeRef(&nodeRef); + if (status < B_OK) + return status; + + int32 count = 0; + int32 files = 0; + + entry_ref ref; + BEntry entry; + while (directory.GetNextRef(&ref) == B_OK) { + entry.SetTo(&ref); + if (entry.InitCheck() == B_OK && !entry.IsFile()) + continue; + + if (CreateRenderer(ref) == B_OK) + count++; + + files++; + } + + if (files != 0 && count == 0) + return B_BAD_VALUE; + + return B_OK; +} + + +status_t +GLRendererRoster::AddRenderer(BGLRenderer* renderer, + image_id image, const entry_ref* ref, ino_t node) +{ + renderer_item item; + item.renderer = renderer; + item.image = image; + item.node = node; + if (ref != NULL) + item.ref = *ref; + + try { + fRenderers[fNextID] = item; + } catch (...) { + return B_NO_MEMORY; + } + + renderer->fOwningRoster = this; + renderer->fID = fNextID++; + return B_OK; +} + + +status_t +GLRendererRoster::CreateRenderer(const entry_ref& ref) +{ + BEntry entry(&ref); + node_ref nodeRef; + status_t status = entry.GetNodeRef(&nodeRef); + if (status < B_OK) + return status; + + BPath path(&ref); + image_id image = load_add_on(path.Path()); + if (image < B_OK) + return image; + + BGLRenderer* (*instantiate_renderer) + (BGLView* view, ulong options, BGLDispatcher* dispatcher); + + status = get_image_symbol(image, "instantiate_gl_renderer", + B_SYMBOL_TYPE_TEXT, (void**)&instantiate_renderer); + if (status == B_OK) { + BGLRenderer* renderer + = instantiate_renderer(fView, fOptions, new BGLDispatcher()); + if (!renderer) { + unload_add_on(image); + return B_UNSUPPORTED; + } + + if (AddRenderer(renderer, image, &ref, nodeRef.node) != B_OK) { + renderer->Release(); + // this will delete the renderer + unload_add_on(image); + } + return B_OK; + } + unload_add_on(image); + + return status; +} |