source/core/query.h

   1 #ifndef MSP_GL_QUERY_H_
   2 #define MSP_GL_QUERY_H_
   3
   4 #include <msp/core/noncopyable.h>
   5 #include "query_backend.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 QueryPoolBackend, public Msp::NonCopyable
  18 {
  19         friend QueryPoolBackend;
  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 size;
  37
  38 public:
  39         QueryPool(QueryType type, unsigned);
  40
  41         void resize(unsigned);
  42         unsigned get_size() const { return size; }
  43
  44         using QueryPoolBackend::get_result;
  45 };
  46
  47 } // namespace Msp
  48 } // namespace GL
  49
  50 #endif