X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fquery.h;h=d5b83b960569911b5dd342351ec48567a0d98a1f;hb=6cee6c490ded0981c4da3f9f4ec74a41555e1a4e;hp=aaa993e389f2c17070fe7956d31bdc7fa3bcaa81;hpb=052b85720688900bc36f8844a94269cb1c0cdd52;p=libs%2Fgl.git

diff --git a/source/core/query.h b/source/core/query.h
index aaa993e3..d5b83b96 100644
--- a/source/core/query.h
+++ b/source/core/query.h
@@ -1,8 +1,8 @@
 #ifndef MSP_GL_QUERY_H_
 #define MSP_GL_QUERY_H_
 
-#include <vector>
 #include <msp/core/noncopyable.h>
+#include "query_backend.h"
 
 namespace Msp {
 namespace GL {
@@ -11,12 +11,18 @@ class Renderer;
 
 enum QueryType
 {
+	/** Query result indicates if any fragments passed the depth and stencil
+	tests. */
 	OCCLUSION_QUERY
 };
 
-class QueryPool: public Msp::NonCopyable
+/**
+A collection of query objects, which can be used to gather feedback from the
+GPU.  Semantics of the queries depend on the query type.
+*/
+class QueryPool: public QueryPoolBackend, public Msp::NonCopyable
 {
-	friend class Commands;
+	friend QueryPoolBackend;
 
 public:
 	class Activate
@@ -33,21 +39,17 @@ public:
 
 private:
 	QueryType type;
-	unsigned gl_type;
-	std::vector<unsigned> queries;
+	unsigned size;
 
 public:
 	QueryPool(QueryType type, unsigned);
-	~QueryPool();
 
 	void resize(unsigned);
-	unsigned get_size() const { return queries.size(); }
+	unsigned get_size() const { return size; }
 
-	unsigned get_result(unsigned) const;
+	using QueryPoolBackend::get_result;
 };
 
-unsigned get_gl_query_type(QueryType);
-
 } // namespace Msp
 } // namespace GL