1 files changed, 131 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/crOpenGL/feedback/feedback_context.c b/src/VBox/Additions/common/crOpenGL/feedback/feedback_context.c
new file mode 100644
index 00000000..11158b5a
--- /dev/null
+++ b/src/VBox/Additions/common/crOpenGL/feedback/feedback_context.c
@@ -0,0 +1,131 @@
+/* $Id: feedback_context.c $ */
+/** @file
+ * VBox feedback spu, context tracking.
+ */
+
+/*
+ * Copyright (C) 2009-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#include "cr_spu.h"
+#include "cr_error.h"
+#include "feedbackspu.h"
+
+/** @todo r=bird: None of the code here is referenced externally, so I've
+ *        just prototyped the function here at the top of the file to make
+ *        the compiler happy. */
+GLint FEEDBACKSPU_APIENTRY  feedbackspu_VBoxCreateContext( GLint con, const char *dpyName, GLint visual, GLint shareCtx );
+GLint FEEDBACKSPU_APIENTRY  feedbackspu_CreateContext( const char *dpyName, GLint visual, GLint shareCtx );
+void FEEDBACKSPU_APIENTRY   feedbackspu_MakeCurrent( GLint window, GLint nativeWindow, GLint ctx );
+void FEEDBACKSPU_APIENTRY   feedbackspu_DestroyContext( GLint ctx );
+
+
+/** @todo Multithreading case. (See feedback_spu.self.RenderMode)*/
+
+GLint FEEDBACKSPU_APIENTRY
+feedbackspu_VBoxCreateContext( GLint con, const char *dpyName, GLint visual, GLint shareCtx )
+{
+    GLint ctx, slot;
+
+#ifdef CHROMIUM_THREADSAFE
+    crLockMutex(&feedback_spu.mutex);
+#endif
+
+    ctx = feedback_spu.child.VBoxCreateContext(con, dpyName, visual, shareCtx);
+
+    /* find an empty context slot */
+    for (slot = 0; slot < feedback_spu.numContexts; slot++) {
+        if (!feedback_spu.context[slot].clientState) {
+            /* found empty slot */
+            break;
+        }
+    }
+    if (slot == feedback_spu.numContexts) {
+        feedback_spu.numContexts++;
+    }
+
+    feedback_spu.context[slot].clientState = crStateCreateContext(NULL, visual, NULL);
+    feedback_spu.context[slot].clientCtx = ctx;
+
+#ifdef CHROMIUM_THREADSAFE
+    crUnlockMutex(&feedback_spu.mutex);
+#endif
+
+    return ctx;
+}
+
+GLint FEEDBACKSPU_APIENTRY
+feedbackspu_CreateContext( const char *dpyName, GLint visual, GLint shareCtx )
+{
+    return feedbackspu_VBoxCreateContext( 0, dpyName, visual, shareCtx );
+}
+
+void FEEDBACKSPU_APIENTRY
+feedbackspu_MakeCurrent( GLint window, GLint nativeWindow, GLint ctx )
+{
+#ifdef CHROMIUM_THREADSAFE
+    crLockMutex(&feedback_spu.mutex);
+#endif
+    feedback_spu.child.MakeCurrent(window, nativeWindow, ctx);
+
+    if (ctx) {
+        int slot;
+        GLint oldmode;
+
+        for (slot=0; slot<feedback_spu.numContexts; ++slot)
+            if (feedback_spu.context[slot].clientCtx == ctx) break;
+        CRASSERT(slot < feedback_spu.numContexts);
+
+        crStateMakeCurrent(feedback_spu.context[slot].clientState);
+
+        crStateGetIntegerv(GL_RENDER_MODE, &oldmode);
+
+        if (oldmode!=feedback_spu.render_mode)
+        {
+            feedback_spu.self.RenderMode(oldmode);
+        }
+    }
+    else
+    {
+        crStateMakeCurrent(NULL);
+    }
+
+#ifdef CHROMIUM_THREADSAFE
+    crUnlockMutex(&feedback_spu.mutex);
+#endif
+}
+
+void FEEDBACKSPU_APIENTRY
+feedbackspu_DestroyContext( GLint ctx )
+{
+#ifdef CHROMIUM_THREADSAFE
+    crLockMutex(&feedback_spu.mutex);
+#endif
+    feedback_spu.child.DestroyContext(ctx);
+
+    if (ctx) {
+        int slot;
+
+        for (slot=0; slot<feedback_spu.numContexts; ++slot)
+            if (feedback_spu.context[slot].clientCtx == ctx) break;
+        CRASSERT(slot < feedback_spu.numContexts);
+
+        crStateDestroyContext(feedback_spu.context[slot].clientState);
+
+        feedback_spu.context[slot].clientState = NULL;
+        feedback_spu.context[slot].clientCtx = 0;
+    }
+
+#ifdef CHROMIUM_THREADSAFE
+    crUnlockMutex(&feedback_spu.mutex);
+#endif
+}
+