// Downsample a 2x2 area & turn into luminence (unclamped)
fragment_program Ogre/Compositor/HDR/downscale2x2LuminenceHLSL_fp hlsl
{
	source hdr.hlsl
	entry_point downscale2x2Luminence
	target ps_2_0
}
fragment_program Ogre/Compositor/HDR/downscale2x2LuminenceGLSL_fp glsl
{
	source hdr_downscale2x2luminence.glsl
	default_params
	{
		param_named inRTT int 0
	}
}
fragment_program Ogre/Compositor/HDR/downscale2x2Luminence_fp unified
{
	delegate Ogre/Compositor/HDR/downscale2x2LuminenceGLSL_fp
	delegate Ogre/Compositor/HDR/downscale2x2LuminenceHLSL_fp
	default_params
	{
	    param_named_auto texelSize inverse_texture_size 0
	}
}

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

			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/downscale3x3HLSL_fp hlsl
{
	source hdr.hlsl
	entry_point downscale3x3
	target ps_2_0
}
fragment_program Ogre/Compositor/HDR/downscale3x3GLSL_fp glsl
{
	source hdr_downscale3x3.glsl
	default_params
	{
		param_named inRTT int 0
	}
}
fragment_program Ogre/Compositor/HDR/downscale3x3_fp unified
{
	delegate Ogre/Compositor/HDR/downscale3x3GLSL_fp
	delegate Ogre/Compositor/HDR/downscale3x3HLSL_fp
	default_params
	{
	    param_named_auto texelSize inverse_texture_size 0
	}
}


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

			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 
			}
		}
	}
}

// Downsample a 3x3 area and perform a brightness filter pass
fragment_program Ogre/Compositor/HDR/downscale3x3brightpassHLSL_fp hlsl
{
	source hdr.hlsl
	entry_point downscale3x3brightpass
	target ps_2_0
}
fragment_program Ogre/Compositor/HDR/utils_fp glsl
{
	source hdr_tonemap_util.glsl
}
fragment_program Ogre/Compositor/HDR/downscale3x3brightpassGLSL_fp glsl
{
	source hdr_downscale3x3brightpass.glsl
	// re-use common functions
	attach Ogre/Compositor/HDR/utils_fp
	default_params
	{
		param_named inRTT int 0
		param_named inLum int 1
	}
}
fragment_program Ogre/Compositor/HDR/downscale3x3brightpass_fp unified
{
	delegate Ogre/Compositor/HDR/downscale3x3brightpassGLSL_fp
	delegate Ogre/Compositor/HDR/downscale3x3brightpassHLSL_fp
	default_params
	{
	    param_named_auto texelSize inverse_texture_size 0
	}
}


material Ogre/Compositor/HDR/Downsample3x3Brightpass
{
	technique
	{
		pass
		{
			cull_hardware none
			cull_software none
			depth_check off

			vertex_program_ref Ogre/Compositor/StdQuad_vp
			{
			}
			fragment_program_ref Ogre/Compositor/HDR/downscale3x3brightpass_fp
			{
			}

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

// Bloom an area using gaussian distribution
fragment_program Ogre/Compositor/HDR/bloomHLSL_fp hlsl
{
	source hdr.hlsl
	entry_point bloom
	target ps_2_0
}
fragment_program Ogre/Compositor/HDR/bloomGLSL_fp glsl
{
	source hdr_bloom.glsl
	default_params
	{
		param_named inRTT int 0
	}
}
fragment_program Ogre/Compositor/HDR/bloom_fp unified
{
	delegate Ogre/Compositor/HDR/bloomGLSL_fp
	delegate Ogre/Compositor/HDR/bloomHLSL_fp
}


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

			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/finaltonemappingHLSL_fp hlsl
{
	source hdr.hlsl
	entry_point finalToneMapping
	target ps_2_0
}
fragment_program Ogre/Compositor/HDR/finaltonemappingGLSL_fp glsl
{
	source hdr_finalToneMapping.glsl
	// re-use common functions
	attach Ogre/Compositor/HDR/utils_fp
	default_params
	{
		param_named inRTT int 0
		param_named inBloom int 1
		param_named inLum int 2
	}
}
fragment_program Ogre/Compositor/HDR/finaltonemapping_fp unified
{
	delegate Ogre/Compositor/HDR/finaltonemappingHLSL_fp
	delegate Ogre/Compositor/HDR/finaltonemappingGLSL_fp
}

material Ogre/Compositor/HDR/ToneMapping
{
	technique
	{
		pass
		{
			cull_hardware none
			cull_software none
			depth_check off

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

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