1 files changed, 72 insertions, 0 deletions
diff --git a/src/VBox/GuestHost/OpenGL/include/cr_bits.h b/src/VBox/GuestHost/OpenGL/include/cr_bits.h
new file mode 100644
index 00000000..b641a9cb
--- /dev/null
+++ b/src/VBox/GuestHost/OpenGL/include/cr_bits.h
@@ -0,0 +1,72 @@
+/* Copyright (c) 2001, Stanford University
+ * All rights reserved.
+ *
+ * See the file LICENSE.txt for information on redistributing this software.
+ */
+
+/* Bit vector functions */
+
+#ifndef CR_BITS_H
+#define CR_BITS_H
+
+
+#include "cr_compiler.h"
+
+
+#define CR_MAX_CONTEXTS      512
+#define CR_MAX_BITARRAY      (CR_MAX_CONTEXTS / 32) /* 32 contexts per uint */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static INLINE void RESET( unsigned int *b, const unsigned int *d )
+{
+    int j;
+    for (j=0;j<CR_MAX_BITARRAY;j++)
+        b[j] |= d[j];
+}
+static INLINE void DIRTY( unsigned int *b, const unsigned int *d )
+{
+    int j;
+    for (j=0;j<CR_MAX_BITARRAY;j++)
+        b[j] = d[j];
+}
+static INLINE void FILLDIRTY( unsigned int *b )
+{
+    int j;
+    for (j=0;j<CR_MAX_BITARRAY;j++)
+        b[j] = 0xffffffff;
+}
+static INLINE void CLEARDIRTY( unsigned int *b, const unsigned int *d )
+{
+    int j;
+    for (j=0;j<CR_MAX_BITARRAY;j++)
+        b[j] &= d[j];
+}
+
+/* As above, but complement the bits here instead of in the calling code */
+static INLINE void CLEARDIRTY2( unsigned int *b, const unsigned int *d )
+{
+    int j;
+    for (j=0;j<CR_MAX_BITARRAY;j++)
+        b[j] &= ~d[j];
+}
+
+static INLINE int CHECKDIRTY( const unsigned int *b, const unsigned int *d )
+{
+    int j;
+
+    for (j=0;j<CR_MAX_BITARRAY;j++)
+        if (b[j] & d[j])
+            return 1;
+
+    return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* CR_BITS_H */