source/core/query.h

   1 #ifndef MSP_GL_QUERY_H_
   2 #define MSP_GL_QUERY_H_
   3
   4 #include <vector>
   5 #include <msp/core/noncopyable.h>
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 class Renderer;
  11
  12 enum QueryType
  13 {
  14         OCCLUSION_QUERY
  15 };
  16
  17 class QueryPool: public Msp::NonCopyable
  18 {
  19         friend class Commands;
  20
  21 public:
  22         class Activate
  23         {
  24         private:
  25                 Renderer &renderer;
  26                 const QueryPool &pool;
  27                 unsigned index;
  28
  29         public:
  30                 Activate(Renderer &, const QueryPool &, unsigned);
  31                 ~Activate();
  32         };
  33
  34 private:
  35         QueryType type;
  36         unsigned gl_type;
  37         std::vector<unsigned> queries;
  38
  39 public:
  40         QueryPool(QueryType type, unsigned);
  41         ~QueryPool();
  42
  43         void resize(unsigned);
  44         unsigned get_size() const { return queries.size(); }
  45
  46         unsigned get_result(unsigned) const;
  47 };
  48
  49 unsigned get_gl_query_type(QueryType);
  50
  51 } // namespace Msp
  52 } // namespace GL
  53
  54 #endif