// Downsample a 2x2 area & turn into luminence (unclamped)
fragment_program Ogre/Compositor/HDR/downscale2x2Luminence_fp/HLSL hlsl
{
  source hdr_downscale2x2luminence.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/downscale2x2Luminence_fp/GL glsl glsles glslang
{
  source hdr_downscale2x2luminence.glsl
}

fragment_program Ogre/Compositor/HDR/downscale2x2Luminence_fp unified
{
  delegate Ogre/Compositor/HDR/downscale2x2Luminence_fp/HLSL
  delegate Ogre/Compositor/HDR/downscale2x2Luminence_fp/GL
  default_params
  {
    param_named_auto texelSize inverse_texture_size 0
  }
}

material Ogre/Compositor/HDR/Downsample2x2Luminence
{
  technique
  {
    pass
    {
      cull_hardware none
      depth_check off
      polygon_mode_overrideable false

      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/downscale2x2Luminence_fp
      {
      }

      texture_unit
      {
        tex_coord_set 0
        tex_address_mode clamp
        filtering none 
      }
    }
  }
}

// Downsample a 3x3 area
fragment_program Ogre/Compositor/HDR/downscale3x3_fp/HLSL hlsl
{
  source hdr_downscale3x3.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/downscale3x3_fp/GL glsl glsles glslang
{
  source hdr_downscale3x3.glsl
}

fragment_program Ogre/Compositor/HDR/downscale3x3_fp unified
{
  delegate Ogre/Compositor/HDR/downscale3x3_fp/HLSL
  delegate Ogre/Compositor/HDR/downscale3x3_fp/GL
  default_params
  {
    param_named_auto texelSize inverse_texture_size 0
  }
}

material Ogre/Compositor/HDR/Downsample3x3
{
  technique
  {
    pass
    {
      cull_hardware none
      depth_check off
      polygon_mode_overrideable false

      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/downscale3x3_fp
      {
      }

      texture_unit
      {
        tex_coord_set 0
        tex_address_mode clamp
        filtering none 
      }
    }
  }
}

// Adapt luminance
fragment_program Ogre/Compositor/HDR/AdaptLuminance_fp/HLSL hlsl
{
  source hdr/hdr_adaptLuminanceFP.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/AdaptLuminance_fp/GL glsl glsles
{
  source hdr/hdr_adaptLuminanceFP.glsl
  
  default_params
  {
    param_named inRTT int 0
    param_named inLum int 1
  }
}

fragment_program Ogre/Compositor/HDR/AdaptLuminance_fp/GLSLang glslang
{
  source hdr/hdr_adaptLuminanceFP.glsl
}

fragment_program Ogre/Compositor/HDR/AdaptLuminance_fp unified
{
  delegate Ogre/Compositor/HDR/AdaptLuminance_fp/HLSL
  delegate Ogre/Compositor/HDR/AdaptLuminance_fp/GLSLang
  delegate Ogre/Compositor/HDR/AdaptLuminance_fp/GL
  
  default_params
  {
    param_named_auto dTime frame_time
    param_named AdaptationScale float 10.0
  }
}

material Ogre/Compositor/HDR/AdaptLuminance
{
  technique
  {
    pass
    {
      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/AdaptLuminance_fp 
      {
      }
      texture_unit //InRTT
      {
        tex_address_mode clamp
        filtering none
      }
      texture_unit //lum
      {
        tex_coord_set 1
        tex_address_mode clamp
        filtering none
      }
    }
  }
}


// Adapt luminance
fragment_program Ogre/Compositor/HDR/AutoKey_fp/HLSL hlsl
{
  source hdr/hdr_autokeyFP.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/AutoKey_fp/GL glsl glsles glslang
{
  source hdr/hdr_autokeyFP.glsl
}

fragment_program Ogre/Compositor/HDR/AutoKey_fp unified
{
  delegate Ogre/Compositor/HDR/AutoKey_fp/HLSL
  delegate Ogre/Compositor/HDR/AutoKey_fp/GL
}

material Ogre/Compositor/HDR/AutoKey
{
  technique
  {
    pass
    {
      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/AutoKey_fp 
      {
      }
      
      texture_unit //inRTT
      {
        tex_address_mode clamp
        filtering none
      }
    }
  }
}

// Downsample a 2x2 area & turn into luminence (unclamped)
fragment_program Ogre/Compositor/HDR/finalLuminence_fp/HLSL hlsl
{
  source hdr/hdr_finalLuminanceFP.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/finalLuminence_fp/GL glsl glsles glslang
{
  source hdr/hdr_finalLuminanceFP.glsl
}

fragment_program Ogre/Compositor/HDR/finalLuminence_fp unified
{
  delegate Ogre/Compositor/HDR/finalLuminence_fp/HLSL
  delegate Ogre/Compositor/HDR/finalLuminence_fp/GL
  	
	default_params
	{
	  param_named_auto texelSize inverse_texture_size 0
	}
}

material Ogre/Compositor/HDR/FinalLuminance
{
  technique
  {
    pass
    {
      lighting off
      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/finalLuminence_fp
      {
      }

      texture_unit
      {
        filtering linear linear linear 
      }
    }
  }
}

// Downsample a 3x3 area and perform a brightness filter pass
fragment_program Ogre/Compositor/HDR/brightpass_fp/HLSL hlsl
{
  source hdr/hdr_brightpassFP.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/brightpass_fp/GL glsl glsles
{
  source hdr/hdr_brightpassFP.glsl
  
	default_params
	{    
    param_named inRTT int 0
    param_named inLum int 1
    param_named inKey int 2
	}
}

fragment_program Ogre/Compositor/HDR/brightpass_fp/GLSLang glslang
{
  source hdr/hdr_brightpassFP.glsl
}

fragment_program Ogre/Compositor/HDR/brightpass_fp unified
{
  delegate Ogre/Compositor/HDR/brightpass_fp/HLSL
  delegate Ogre/Compositor/HDR/brightpass_fp/GLSLang
  delegate Ogre/Compositor/HDR/brightpass_fp/GL
  
  default_params
	{
	  param_named_auto texelSize inverse_texture_size 0
	}
}

material Ogre/Compositor/HDR/Brightpass
{
  technique
  {
    pass
    {
      lighting off
      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/brightpass_fp
      {
      }

      // Scene 
      texture_unit
      {
        tex_address_mode clamp
        filtering none
        tex_coord_set 0
      }
      // Luminence 
      texture_unit
      {
        tex_address_mode clamp
        filtering none 
        tex_coord_set 0
      }
      // key 
      texture_unit
      {
        tex_address_mode clamp
        filtering none 
        tex_coord_set 0
      }
    }
  }
}

// Bloom an area using gaussian distribution
fragment_program Ogre/Compositor/HDR/bloom_fp/HLSL hlsl
{
  source hdr_bloom.glsl
  target ps_2_a
}

fragment_program Ogre/Compositor/HDR/bloom_fp/GL glsl glsles glslang
{
  source hdr_bloom.glsl
}

fragment_program Ogre/Compositor/HDR/bloom_fp unified
{
  delegate Ogre/Compositor/HDR/bloom_fp/HLSL
  delegate Ogre/Compositor/HDR/bloom_fp/GL
}

material Ogre/Compositor/HDR/GaussianBloom
{
  technique
  {
    pass
    {
      cull_hardware none
      depth_check off
      polygon_mode_overrideable false

      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/bloom_fp
      {
      }

      // Input 
      texture_unit
      {
        tex_coord_set 0
        tex_address_mode clamp
        filtering none 
      }
    }
  }
}

// Perform final tone mapping
fragment_program Ogre/Compositor/HDR/finaltonemapping_fp/HLSL hlsl
{
  source hdr/hdr_toneMappingFP.glsl
  target ps_3_0
}

fragment_program Ogre/Compositor/HDR/finaltonemapping_fp/GL glsl glsles
{
  source hdr/hdr_toneMappingFP.glsl
  
	default_params
	{
    param_named inRTT int 0
    param_named inBloom int 1
    param_named inLum int 2
    param_named inKey int 3
	}
}

fragment_program Ogre/Compositor/HDR/finaltonemapping_fp/GLSLang glslang
{
  source hdr/hdr_toneMappingFP.glsl
}

fragment_program Ogre/Compositor/HDR/finaltonemapping_fp unified
{
  delegate Ogre/Compositor/HDR/finaltonemapping_fp/HLSL
  delegate Ogre/Compositor/HDR/finaltonemapping_fp/GLSLang
  delegate Ogre/Compositor/HDR/finaltonemapping_fp/GL
  
	default_params
	{
    param_named effectAmount float 0.4
    param_named blurAmount float 0.3
    param_named gamma float 1.0
  }
}

material Ogre/Compositor/HDR/ToneMapping
{
  technique
  {
    pass
    {
      lighting off
      vertex_program_ref Ogre/Compositor/StdQuad_vp
      {
      }
      fragment_program_ref Ogre/Compositor/HDR/finaltonemapping_fp
      {
      }

      // Scene 
      texture_unit
      {
        tex_address_mode clamp
        tex_coord_set 0
      }
      // Bloom
      texture_unit
      {
        tex_address_mode clamp
        tex_coord_set 0
      }
      // Luminence 
      texture_unit
      {
        tex_address_mode clamp
        tex_coord_set 0
      }
      // Key 
      texture_unit
      {
        tex_address_mode clamp
        tex_coord_set 0
      }
    }
  }
}

//debug
fragment_program Ogre/Compositor/HDR/copy_fp/HLSL hlsl
{
    source hdr_copy.glsl
    target ps_2_a
}

fragment_program Ogre/Compositor/HDR/copy_fp/GL glsl glsles glslang
{
    source hdr_copy.glsl
}

fragment_program Ogre/Compositor/HDR/copy_fp unified
{
    delegate Ogre/Compositor/HDR/copy_fp/HLSL
    delegate Ogre/Compositor/HDR/copy_fp/GL
}

material Ogre/Compositor/HDR/Copy
{
    technique
    {
        pass
        {
            cull_hardware none
            depth_check off
            polygon_mode_overrideable false
            
            vertex_program_ref Ogre/Compositor/StdQuad_vp
            {
            }
            fragment_program_ref Ogre/Compositor/HDR/copy_fp
            {
            }
            
            // Scene 
            texture_unit
            {
                tex_coord_set 0
                tex_address_mode clamp
            }
        }
    }
}