Blur.h

#pragma once
 
#include <glm/glm.hpp>
 
namespace Cogs
{
  namespace Core
  {
    class Context;
 
    namespace Blur
    {
 
      float boxFilterWidthFromStdDev(const float stddev,
                                     const uint32_t quality);
 
      void boxFilterIterations3D(Context* context,
                                 float* output,
                                 const float* input,
                                 const glm::uvec3 size,
                                 const float radius,
                                 const uint32_t iterations);
 
      struct BoxFilterPassXTask
      {
        const float * src;
        float * dst;
        float * ptrA;
        float * ptrB;
        glm::uvec3 size;
        float radius;
        uint32_t iterations;
        uint32_t a, b;
 
        void operator()();
      };
 
      struct BoxFilterPassYTask
      {
        const float * src;
        float * dst;
        float * ptrA;
        float * ptrB;
        glm::uvec3 size;
        float radius;
        uint32_t iterations;
        uint32_t a, b;
 
        void operator()();
      };
 
      struct BoxFilterPassZTask
      {
        const float * src;
        float * dst;
        float * ptrA;
        float * ptrB;
        glm::uvec3 size;
        float radius;
        uint32_t iterations;
        uint32_t a, b;
 
        void operator()();
      };
 
#ifdef EMSCRIPTEN
#define BoxFilterPassXTaskSSE BoxFilterPassXTask
#define BoxFilterPassYTaskSSE BoxFilterPassYTask
#define BoxFilterPassZTaskSSE BoxFilterPassZTask
#else
      struct BoxFilterPassXTaskSSE
      {
        const float * src;
        float * dst;
        float * ptrA;
        float * ptrB;
        glm::uvec3 size;
        float radius;
        uint32_t iterations;
        uint32_t a, b;
 
        void operator()();
      };
 
      struct BoxFilterPassYTaskSSE
      {
        const float * src;
        float * dst;
        float * ptrA;
        float * ptrB;
        glm::uvec3 size;
        float radius;
        uint32_t iterations;
        uint32_t a, b;
 
        void operator()();
      };
 
      struct BoxFilterPassZTaskSSE
      {
        const float * src;
        float * dst;
        float * ptrA;
        float * ptrB;
        glm::uvec3 size;
        float radius;
        uint32_t iterations;
        uint32_t a, b;
 
        void operator()();
      };
#endif
 
    }
  }
}