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-rw-r--r--mesalib/src/hgl/GLRendererRoster.cpp224
1 files changed, 224 insertions, 0 deletions
diff --git a/mesalib/src/hgl/GLRendererRoster.cpp b/mesalib/src/hgl/GLRendererRoster.cpp
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index 000000000..1712a871c
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+++ b/mesalib/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, &parameterLength) == 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, &parameterLength) == 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;
+}