1 files changed, 58 insertions, 0 deletions
diff --git a/src/VBox/GuestHost/OpenGL/include/state/cr_occlude.h b/src/VBox/GuestHost/OpenGL/include/state/cr_occlude.h
new file mode 100644
index 00000000..9791ec6a
--- /dev/null
+++ b/src/VBox/GuestHost/OpenGL/include/state/cr_occlude.h
@@ -0,0 +1,58 @@
+/* Copyright (c) 2001, Stanford University
+ * All rights reserved.
+ *
+ * See the file LICENSE.txt for information on redistributing this software.
+ */
+
+#ifndef CR_OCCLUSION_H
+#define CR_OCCLUSION_H
+
+#include "cr_hash.h"
+#include "state/cr_statetypes.h"
+
+#include <iprt/cdefs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+	CRbitvalue	dirty[CR_MAX_BITARRAY];
+} CROcclusionBits;
+
+
+/*
+ * Occlusion query object.
+ */
+typedef struct {
+	GLenum target;
+	GLuint name;
+	GLuint refCount;
+	GLuint passedCounter;
+	GLboolean active;
+	CRbitvalue dirty[CR_MAX_BITARRAY];  /* dirty data or state */
+	GLintptrARB dirtyStart, dirtyLength; /* dirty region */
+} CROcclusionObject;
+
+
+typedef struct {
+	CRHashTable *objects;
+	GLuint currentQueryObject;
+} CROcclusionState;
+
+
+DECLEXPORT(void) crStateOcclusionInit(CRContext *ctx);
+
+DECLEXPORT(void) crStateOcclusionDestroy(CRContext *ctx);
+
+DECLEXPORT(void) crStateOcclusionDiff(CROcclusionBits *bb, CRbitvalue *bitID,
+                                      CRContext *fromCtx, CRContext *toCtx);
+DECLEXPORT(void) crStateOcclusionSwitch(CROcclusionBits *bb, CRbitvalue *bitID, 
+                                        CRContext *fromCtx, CRContext *toCtx);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CR_OCCLUSION_H */