1 files changed, 56 insertions, 0 deletions
diff --git a/src/VBox/GuestHost/OpenGL/include/state/cr_feedback.h b/src/VBox/GuestHost/OpenGL/include/state/cr_feedback.h
new file mode 100644
index 00000000..168f20eb
--- /dev/null
+++ b/src/VBox/GuestHost/OpenGL/include/state/cr_feedback.h
@@ -0,0 +1,56 @@
+/* Copyright (c) 2001, Stanford University
+ * All rights reserved.
+ *
+ * See the file LICENSE.txt for information on redistributing this software.
+ */
+
+#ifndef CR_STATE_FEEDBACK_H 
+#define CR_STATE_FEEDBACK_H 
+
+#include "state/cr_statetypes.h"
+
+#include <iprt/cdefs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAX_NAME_STACK_DEPTH 64
+
+typedef struct {
+	CRbitvalue dirty[CR_MAX_BITARRAY];
+} CRFeedbackBits;
+
+typedef struct {
+	CRbitvalue dirty[CR_MAX_BITARRAY];
+} CRSelectionBits;
+
+typedef struct {
+	GLenum	type;
+	GLuint	mask;
+	GLfloat	*buffer;
+	GLuint	bufferSize;
+	GLuint	count;
+} CRFeedbackState;
+
+typedef struct {
+   	GLuint *buffer;
+   	GLuint bufferSize;
+   	GLuint bufferCount;
+   	GLuint hits;
+   	GLuint nameStackDepth;
+   	GLuint nameStack[MAX_NAME_STACK_DEPTH];
+   	GLboolean hitFlag;
+   	GLfloat hitMinZ, hitMaxZ;
+} CRSelectionState;
+
+extern DECLEXPORT(void) crStateFeedbackDiff(CRFeedbackState *from, CRFeedbackState *to,
+                                            CRFeedbackBits *bb, CRbitvalue *bitID);
+extern DECLEXPORT(void) crStateFeedbackSwitch(CRFeedbackBits *bb, CRbitvalue *bitID, 
+                                              CRFeedbackState *from, CRFeedbackState *to);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CR_STATE_FEEDBACK_H */