monkey2/modules/mojo3d/render/renderer.monkey2

Namespace mojo3d

#rem monkeydoc The mojo3d Renderer class.

A renderer is an object that renders scenes. There is normally only ever one renderer created and it is created for you automatically when required so you don't normally need to worry about renderers at all.

When a new renderer is created, the config setting `MOJO3D\_RENDERER` can be used to control the type of renderer created. Use "deferred" to create a deferred renderer and "foward" to create a forward renderer. See [[std:std.filesystem.SetConfig|SetConfig]] for more information about config settings. By default, a deferred renderer is created for desktop and web targets and a forward renderer for mobile targets.

#end
Class Renderer

	#rem monkeydoc Creates a new renderer.

When a new renderer is created, the config setting `MOJO3D\_RENDERER` can be used to control the type of renderer created. Use "deferred" to create a deferred renderer and "foward" to create a forward renderer. See [[std:std.filesystem.SetConfig|SetConfig]] for more information about config settings. By default, a deferred renderer is created for desktop and web targets and a forward renderer for mobile targets.
	
	#end
	Method New()
		
		If Not _current _current=Self
		
		_direct=False
		_deferred=False
		
		Local cfg:=GetConfig( "MOJO3D_RENDERER" )
		
		Select cfg
		Case "deferred"
			_deferred=True
		Case "forward"
			_deferred=False
		Case ""
#If __DESKTOP_TARGET__ Or __WEB_TARGET__
			_deferred=True
#else
			_deferred=False
#endif
		Default
			RuntimeError( "Unrecognized MOJO3D_RENDERER config setting value '"+cfg+"'" )
		
		End
		
		Print "GL_VERSION="+opengl.glGetString( opengl.GL_VERSION )
		
		If _deferred
			Print "Renderer is using deferred rendering"
		Else
			Print "Renderer is using forward rendering"
		Endif
		
		If _deferred _defs="MX2_DEFERREDRENDERER" Else _defs="MX2_FORWARDRENDERER"
		
		_defs+=";MX2_LINEAROUTPUT"
	End
	
	#rem monkeydoc True if renderer is using deferred rendering.
	#end
	Property Deferred:Bool()
		
		Return _deferred
	End

	#rem monkeydoc @hidden
	#end
	Property ShaderDefs:String()
		
		Return _defs
	End
	
	#rem monkeydoc Size of the cascaded shadow map texture.
	
	Must be a power of 2 size. Defaults to 2048.
	
	#end
	Property CSMTextureSize:Int()
		
		Return _csmSize
		
	Setter( size:Int )
		Assert( Log2( size )=Floor( Log2( size ) ),"CSMTextureSize must be a power of 2" )
		
		_csmSize=size
	End

	#rem monkeydoc Size of the cube texture used for point light shadow mapping.
	
	Must be a power of 2. Defaults to 2048.
		
	#end
	Property PSMTextureSize:Int()
		
		Return _psmSize
		
	Setter( size:Int )
		Assert( Log2( size )=Floor( Log2( size ) ),"PSMTextureSize must be a power of 2" )
		
		_psmSize=size
	End
	
	#rem monkeydoc Gets the current renderer.
	
	If there is no current renderer and new renderer is created.
		
	#end
	Function GetCurrent:Renderer()
		
		If Not _current New Renderer
			
		Return _current
	End
	
	Method Render( target:RenderTarget,targetSize:Vec2i,viewport:Recti,scene:Scene,viewMatrix:AffineMat4f,projMatrix:Mat4f,near:Float,far:Float ) Virtual
		
		Init()
		
		ValidateCSMShadows()
		
		ValidatePSMShadows()
		
		SetOutputRenderTarget( target,targetSize,viewport )

		SetScene( scene )
		
		SetCamera( viewMatrix,projMatrix,near,far )
		
		RenderBackground()
		
		RenderOpaque()
		
		RenderTransparent()
		
		RenderPostEffects()
		
		RenderCopy()
	End
	
	Method RenderBackground()
	
		If _scene.SkyTexture
		
			_gdevice.ColorMask=ColorMask.None
			_gdevice.DepthMask=True
			
			_gdevice.Clear( Null,1.0 )
			
			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=False
			_gdevice.DepthFunc=DepthFunc.Always
			_gdevice.BlendMode=BlendMode.Opaque
			_gdevice.CullMode=CullMode.None
			_gdevice.Shader=_skyboxShader
			_gdevice.RenderPass=0
			
			RenderQuad()
		Else
			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=True
			
			Local color:=_scene.ClearColor
			color.r=Pow( color.r,2.2 )
			color.g=Pow( color.g,2.2 )
			color.b=Pow( color.b,2.2 )
		
			_gdevice.Clear( color,1.0 )

		Endif
	End
	
	Method RenderDeferredLighting( light:Light )
		
		Local renderPass:=0
		
		Select light.Type
		Case LightType.Directional
			If light.CastsShadow RenderCSMShadows( light ) ; renderPass|=16
			renderPass|=4
		Case LightType.Point
			If light.CastsShadow RenderPSMShadows( light ) ; renderPass|=16
			renderPass|=8
		End
		
		_runiforms.SetColor( "LightColor",light.Color )
		_runiforms.SetFloat( "LightRange",light.Range )
		_runiforms.SetMat4f( "LightViewMatrix",_viewMatrix * light.Matrix )
		
		_runiforms.SetMat4f( "InverseProjectionMatrix",_invProjMatrix )
		
		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=False
		_gdevice.DepthFunc=DepthFunc.Always
		_gdevice.BlendMode=BlendMode.Additive
		_gdevice.RenderPass=renderPass
		
		_gdevice.Shader=_deferredLightingShader
		_gdevice.CullMode=CullMode.None
		
		_gdevice.RenderTarget=_renderTarget1
		
		RenderQuad()
		
		_gdevice.RenderTarget=_renderTarget0
	End
	
	Method RenderOpaqueDeferred()

		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=True
		_gdevice.DepthFunc=DepthFunc.LessEqual
		_gdevice.BlendMode=BlendMode.Opaque
		_gdevice.RenderPass=1
		
		RenderOpaqueOps()
		
		For Local light:=Eachin _scene.Lights
			
			RenderDeferredLighting( light )
		Next
		
	End
	
	Method RenderOpaqueForward()
		
		Local first:=True
		
		For Local light:=Eachin _scene.Lights
			
			Local renderPass:=2
			
			Select light.Type
			Case LightType.Directional			
				If light.CastsShadow RenderCSMShadows( light ) ; renderPass|=16
				renderPass|=4
			Case LightType.Point
				If light.CastsShadow RenderPSMShadows( light ) ; renderPass|=16
				renderPass|=8
			End
			
			_runiforms.SetColor( "LightColor",light.Color )
			_runiforms.SetFloat( "LightRange",light.Range )
			_runiforms.SetMat4f( "LightViewMatrix",_viewMatrix * light.Matrix )

			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=first
			_gdevice.DepthFunc=DepthFunc.LessEqual
			_gdevice.BlendMode=first ? BlendMode.Opaque Else BlendMode.Additive
			_gdevice.RenderPass=renderPass
			
			RenderOpaqueOps()
			
			first=False
		Next
		
		If first
			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=True
			_gdevice.DepthFunc=DepthFunc.LessEqual
			_gdevice.BlendMode=BlendMode.Opaque
			_gdevice.RenderPass=2
			
			RenderOpaqueOps()
		Endif
		
	End
	
	Method RenderDeferredFog()
		
		If _scene.FogColor.a=0 Return
		
		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=False
		_gdevice.DepthFunc=DepthFunc.Always
		_gdevice.BlendMode=BlendMode.Alpha
		_gdevice.RenderPass=0
		
		_gdevice.RenderTarget=_renderTarget1
		_gdevice.Shader=_deferredFogShader
		_gdevice.CullMode=CullMode.None
		
		RenderQuad()

		_gdevice.RenderTarget=_renderTarget0
	End
	
	Method RenderOpaque()
		
		If _deferred 
			RenderOpaqueDeferred()
			RenderDeferredFog()
		Else 
			RenderOpaqueForward()
		Endif
	End
	
	Method RenderSelfIlluminated()
		
		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=True
		_gdevice.DepthFunc=DepthFunc.LessEqual
		_gdevice.RenderPass=1
		
		RenderSelfIlluminatedOps()
	End

	Method RenderTransparent()

		Local first:=True
		
		For Local light:=Eachin _scene.Lights
			
			Local renderPass:=2
			
			Select light.Type
			Case LightType.Directional			
	'			If light.CastsShadow RenderCSMShadows( light ) ; renderPass|=16
				renderPass|=4
			Case LightType.Point
	'			If light.CastsShadow RenderPSMShadows( light ) ; renderPass|=16
				renderPass|=8
			End
			
			_runiforms.SetColor( "LightColor",light.Color )
			_runiforms.SetFloat( "LightRange",light.Range )
			_runiforms.SetMat4f( "LightViewMatrix",_viewMatrix * light.Matrix )
			
			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=False
			_gdevice.DepthFunc=DepthFunc.LessEqual
			_gdevice.RenderPass=renderPass
			
			RenderTransparentOps()
			
			first=False
			
			Exit
		Next
		
		If first
			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=False
			_gdevice.DepthFunc=DepthFunc.LessEqual
			_gdevice.RenderPass=2
			
			RenderTransparentOps()
		Endif
		
	End
	
	Method RenderCSMShadows( light:Light )
		
		'Perhaps use a different device for CSM...?
		'
		Local t_rtarget:=_gdevice.RenderTarget
		Local t_viewport:=_gdevice.Viewport
		Local t_scissor:=_gdevice.Scissor

		_gdevice.RenderTarget=_csmTarget
		_gdevice.Viewport=New Recti( 0,0,_csmTexture.Size )
		_gdevice.Scissor=_gdevice.Viewport
		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=True
		
		_gdevice.Clear( Color.White,1.0 )
		
		_gdevice.DepthFunc=DepthFunc.LessEqual
		_gdevice.BlendMode=BlendMode.Opaque
		_gdevice.CullMode=CullMode.Front
		_gdevice.RenderPass=3|4

		Local invLightMatrix:=light.InverseMatrix
		
		Local viewLight:=invLightMatrix * -_viewMatrix
		
		For Local i:=0 Until _csmSplitDepths.Length-1
			
			Local znear:=_csmSplitDepths[i]
			Local zfar:=_csmSplitDepths[i+1]

			Local splitProj:=_projMatrix
			splitProj.k.z=(zfar+znear)/(zfar-znear)
			splitProj.t.z=-(zfar*znear*2)/(zfar-znear)
						
			Local invSplitProj:=-splitProj
			
			Local bounds:=Boxf.EmptyBounds
			
			For Local z:=-1 To 1 Step 2
				For Local y:=-1 To 1 Step 2
					For Local x:=-1 To 1 Step 2
						Local c:=New Vec3f( x,y,z )				'clip coords
						Local v:=invSplitProj * c				'clip->view
						Local l:=viewLight * v					'view->light
						bounds|=l
					Next
				Next
			Next
			
			bounds.min.z-=100
			
			Local lightProj:=Mat4f.Ortho( bounds.min.x,bounds.max.x,bounds.min.y,bounds.max.y,bounds.min.z,bounds.max.z )
			
			'set matrices for next pass...
			_runiforms.SetMat4f( "ShadowMatrix"+i,lightProj * viewLight )
			
			Local size:=_csmTexture.Size,hsize:=size/2
			
			Select i
			Case 0 _gdevice.Viewport=New Recti( 0,0,hsize.x,hsize.y )
			Case 1 _gdevice.Viewport=New Recti( hsize.x,0,size.x,hsize.y )
			Case 2 _gdevice.Viewport=New Recti( 0,hsize.y,hsize.x,size.y )
			Case 3 _gdevice.Viewport=New Recti( hsize.x,hsize.y,size.x,size.y )
			End
			
			_gdevice.Scissor=_gdevice.Viewport
				
			RenderShadowOps( invLightMatrix,lightProj )
		Next
		
		_gdevice.RenderTarget=t_rtarget
		_gdevice.Viewport=t_viewport
		_gdevice.Scissor=t_scissor
	End
	
	Method RenderPSMShadows( light:Light )
	
		'Perhaps use a different device for CSM...?
		'
		Local t_rtarget:=_gdevice.RenderTarget
		Local t_viewport:=_gdevice.Viewport
		Local t_scissor:=_gdevice.Scissor
		
		_gdevice.Viewport=New Recti( 0,0,_psmTexture.Size )
		_gdevice.Scissor=_gdevice.Viewport
		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=True
		
		_gdevice.DepthFunc=DepthFunc.LessEqual
		_gdevice.BlendMode=BlendMode.Opaque
		_gdevice.CullMode=CullMode.Back'Front
		_gdevice.RenderPass=3|8
		
		Local lnear:=0.1
		
		Local lightProj:=Mat4f.Frustum( -lnear,+lnear,-lnear,+lnear,lnear,light.Range )
		
		Local invLightMatrix:=light.InverseMatrix
		
		Local viewLight:=invLightMatrix * _invViewMatrix
		
		_runiforms.SetFloat( "LightRange",light.Range )
		_runiforms.SetMat4f( "ShadowMatrix0",viewLight )
		
		For Local i:=0 Until 6
			
			_gdevice.RenderTarget=_psmTargets[i]
			
			_gdevice.Clear( Color.White,1.0 )
			
			Local viewMatrix:=New AffineMat4f( _psmFaceTransforms[i] ) * invLightMatrix

			RenderShadowOps( viewMatrix,lightProj )
		Next

		_gdevice.RenderTarget=t_rtarget
		_gdevice.Viewport=t_viewport
		_gdevice.Scissor=t_scissor
	End
	
	Method RenderPostEffects()
		
		PostEffect.BeginRendering( _gdevice,_runiforms )
		
		For Local effect:=Eachin _scene.PostEffects
			
			If Not effect.Enabled Continue
			
			_gdevice.ColorMask=ColorMask.All
			_gdevice.DepthMask=False
			_gdevice.CullMode=CullMode.None
			_gdevice.DepthFunc=DepthFunc.Always
			_gdevice.BlendMode=BlendMode.Opaque
			_gdevice.RenderPass=0
			
			effect.Render()
		Next

		PostEffect.EndRendering()
	End
	
	Method RenderCopy()
		
		If _direct Return
		
		Local rsize:=_gdevice.Viewport.Size
		Local rtarget:=_gdevice.RenderTarget
		Local rtexture:=rtarget.GetColorTexture( 0 )
		_runiforms.SetTexture( "SourceBuffer",rtexture )
		_runiforms.SetVec2f( "SourceBufferSize",Cast<Vec2f>( rsize ) )
		_runiforms.SetVec2f( "SourceBufferScale",Cast<Vec2f>( rsize )/Cast<Vec2f>( rtexture.Size ) )

		_gdevice.RenderTarget=_outputRenderTarget
		_gdevice.Resize( _outputRenderTargetSize )
		_gdevice.Viewport=_outputViewport
		_gdevice.Scissor=_outputViewport

		_gdevice.ColorMask=ColorMask.All
		_gdevice.DepthMask=False
		_gdevice.DepthFunc=DepthFunc.Always
		_gdevice.BlendMode=BlendMode.Opaque
		_gdevice.CullMode=CullMode.None
		_gdevice.Shader=_copyShader
		_gdevice.RenderPass=0
		
		RenderCopyQuad()
		
		_gdevice.RenderTarget=Null
		_gdevice.Resize( Null )
	End
	
	Method RenderCopyQuad() Virtual	'So VRRenderer can override, ie: cheeze it for now!

		If _outputRenderTarget
			RenderInvertedQuad()
		Else
			RenderQuad()
		Endif
	End
	
	Method RenderInvertedQuad()

		Global _vertices:=New VertexBuffer( New Vertex3f[](
			New Vertex3f( 0,1,0,0,0 ),
			New Vertex3f( 1,1,0,1,0, ),
			New Vertex3f( 1,0,0,1,1 ),
			New Vertex3f( 0,0,0,0,1 ) ) )
			
		_gdevice.VertexBuffer=_vertices
		
		_gdevice.Render( 4,1 )
	End
	
	Method RenderQuad()

		Global _vertices:=New VertexBuffer( New Vertex3f[](
			New Vertex3f( 0,1,0,0,1 ),
			New Vertex3f( 1,1,0,1,1 ),
			New Vertex3f( 1,0,0,1,0 ),
			New Vertex3f( 0,0,0,0,0 ) ) )
			
		_gdevice.VertexBuffer=_vertices
		
		_gdevice.Render( 4,1 )
	End
	
	Method SortTransparentOps()
		
		_renderQueue.TransparentOps.Sort( Lambda:Int( x:RenderOp,y:RenderOp )
		
			If y.distance<x.distance Return -1
			If x.distance<y.distance Return 1
			Return 0
		End )
	End
	
	Method SortSpriteOps()
		
		_renderQueue.SpriteOps.Sort( Lambda:Int( x:SpriteOp,y:SpriteOp )
		
			If y.distance<x.distance Return -1
			If x.distance<y.distance Return 1
			Return 0
		End )
	End

	Method RenderOpaqueOps()
		
		RenderRenderOps( _renderQueue.OpaqueOps,_viewMatrix,_projMatrix )
	End
	
	Method RenderSelfIlluminatedOps()
		
		RenderRenderOps( _renderQueue.SelfIlluminatedOps,_viewMatrix,_projMatrix )
	End
	
	Method RenderTransparentOps()
		
		RenderRenderOps( _renderQueue.TransparentOps,_viewMatrix,_projMatrix )
	End

	Method RenderRenderOps( ops:Stack<RenderOp>,viewMatrix:AffineMat4f,projMatrix:Mat4f )
		
		Local viewProjMatrix:=projMatrix * viewMatrix
		
		_runiforms.SetMat4f( "ViewMatrix",viewMatrix )
		_runiforms.SetMat4f( "ProjectionMatrix",projMatrix )
		_runiforms.SetMat4f( "ViewProjectionMatrix",viewProjMatrix )
		_runiforms.SetMat4f( "InverseProjectionMatrix",-projMatrix )

		Local instance:Entity=Null,first:=True
		Local material:Material
		Local bones:Mat4f[]
		
		For Local op:=Eachin ops
			
			If op.instance<>instance Or first
				
				first=False
				
				instance=op.instance
				
				Local modelMat:=instance ? instance.Matrix Else New AffineMat4f
				Local modelViewMat:=viewMatrix * modelMat
				Local modelViewNormMat:=modelViewMat.m.Cofactor()
				Local modelViewProjMat:=projMatrix * modelViewMat
				
				_iuniforms.SetMat4f( "ModelMatrix",modelMat )
				_iuniforms.SetMat4f( "ModelViewMatrix",modelViewMat )
				_iuniforms.SetMat3f( "ModelViewNormalMatrix",modelViewNormMat )
				_iuniforms.SetMat4f( "ModelViewProjectionMatrix",modelViewProjMat )
				_iuniforms.SetColor( "Color",instance ? instance.Color Else Color.White )
				_iuniforms.SetFloat( "Alpha",instance ? instance.Alpha Else 1.0 )
			Endif
				
			If op.bones
				_iuniforms.SetMat4fArray( "ModelBoneMatrices",op.bones )
			Endif
				
			If op.uniforms 
				_gdevice.BindUniformBlock( op.uniforms )
			Endif
						
			If op.material<>material
				material=op.material
				_gdevice.Shader=op.shader
				_gdevice.BindUniformBlock( material.Uniforms )
				_gdevice.CullMode=material.CullMode
			Endif

			_gdevice.BlendMode=op.blendMode
			
			_gdevice.VertexBuffer=op.vbuffer
			
			If op.ibuffer
				_gdevice.IndexBuffer=op.ibuffer
				_gdevice.RenderIndexed( op.order,op.count,op.first )
			Else
				_gdevice.Render( op.order,op.count,op.first )
			Endif
			
		Next
	End
	
	Method RenderShadowOps( viewMatrix:AffineMat4f,projMatrix:Mat4f )
		
		Local ops:=_renderQueue.ShadowOps
		
		Local viewProjMatrix:=projMatrix * viewMatrix
		
		_runiforms.SetMat4f( "ViewMatrix",viewMatrix )
		_runiforms.SetMat4f( "ProjectionMatrix",projMatrix )
		_runiforms.SetMat4f( "ViewProjectionMatrix",viewProjMatrix )
		_runiforms.SetMat4f( "InverseProjectionMatrix",-projMatrix )
		
		Local instance:Entity=Null,first:=True
		Local material:Material
		Local bones:Mat4f[]
		
		For Local op:=Eachin ops
			
			If op.instance<>instance Or first
				first=False
				instance=op.instance
				Local modelMat:=instance ? instance.Matrix Else New AffineMat4f
				Local modelViewMat:=viewMatrix * modelMat
				Local modelViewNormMat:=modelViewMat.m.Cofactor()
				Local modelViewProjMat:=projMatrix * modelViewMat
				_iuniforms.SetMat4f( "ModelMatrix",modelMat )
				_iuniforms.SetMat4f( "ModelViewMatrix",modelViewMat )
				_iuniforms.SetMat3f( "ModelViewNormalMatrix",modelViewNormMat )
				_iuniforms.SetMat4f( "ModelViewProjectionMatrix",modelViewProjMat )
			Endif
				
			If op.bones _iuniforms.SetMat4fArray( "ModelBoneMatrices",op.bones )
			
			If op.uniforms _gdevice.BindUniformBlock( op.uniforms )
						
			If op.material<>material
				material=op.material
				_gdevice.Shader=material.GetRenderShader()
				_gdevice.BindUniformBlock( material.Uniforms )
			Endif
			
			_gdevice.VertexBuffer=op.vbuffer
			
			If op.ibuffer
				_gdevice.IndexBuffer=op.ibuffer
				_gdevice.RenderIndexed( op.order,op.count,op.first )
			Else
				_gdevice.Render( op.order,op.count,op.first )
			Endif
			
		Next

	End
	
	Private
	
	Field _direct:Bool=False
	Field _deferred:Bool=True
	Field _defs:String
	
	Field _gdevice:GraphicsDevice
	
	Field _runiforms:UniformBlock
	Field _iuniforms:UniformBlock
	
	Field _defaultEnv:Texture
	
	Field _skyboxShader:Shader
	Field _copyShader:Shader
	
	Field _deferredLightingShader:Shader
	Field _deferredFogShader:Shader
	
	Field _renderQueue:RenderQueue
	
	Field _spriteBuffer:=New SpriteBuffer
	
	Field _accumBuffer:Texture
	Field _colorBuffer:Texture
	Field _normalBuffer:Texture
	Field _depthBuffer:Texture

	Field _renderTarget0:RenderTarget	'all buffers
	Field _renderTarget1:RenderTarget	'accum buffer only

	Field _effectBuffer:Texture
	Field _effectTarget:RenderTarget
	
	Field _csmSize:=2048
	Field _csmSplits:Float[]
	Field _csmSplitDepths:=New Float[5]
	Field _csmTexture:Texture
	Field _csmDepth:Texture
	Field _csmTarget:RenderTarget

	Field _psmSize:=2048
	Field _psmTexture:Texture
	Field _psmDepth:Texture
	Field _psmTargets:=New RenderTarget[6]
	Field _psmFaceTransforms:Mat3f[]
	
	Field _outputRenderTarget:RenderTarget
	Field _outputRenderTargetSize:Vec2i
	Field _outputViewport:Recti
	
	Field _scene:Scene
	
	Field _viewMatrix:AffineMat4f
	Field _projMatrix:Mat4f
	Field _near:Float
	Field _far:Float
	
	Field _invViewMatrix:AffineMat4f
	Field _invProjMatrix:Mat4f
	
	Field _ambientRendered:Bool

	Global _current:Renderer
	
	Method Init()
		
		Global inited:Bool
		If inited Return
		inited=True
		
		_gdevice=New GraphicsDevice( 0,0 )
		
		_runiforms=New UniformBlock( 1,True )
		_iuniforms=New UniformBlock( 2,True )
		
		_gdevice.BindUniformBlock( _runiforms )
		_gdevice.BindUniformBlock( _iuniforms )
		
		_defaultEnv=Texture.Load( "asset::textures/env_default.jpg",TextureFlags.FilterMipmap|TextureFlags.Cubemap )
		
		_skyboxShader=Shader.Open( "misc/skybox",ShaderDefs )

		_copyShader=Shader.Open( "misc/copy" )
		
		If _deferred 
			_deferredLightingShader=Shader.Open( "misc/lighting-deferred",ShaderDefs )
			_deferredFogShader=Shader.Open( "misc/fog-deferred",ShaderDefs )
		Endif

		_renderQueue=New RenderQueue
		
		_psmFaceTransforms=New Mat3f[]( 
			New Mat3f(  0,0,+1, 0,-1,0, -1, 0,0 ),	'+X
			New Mat3f(  0,0,-1, 0,-1,0, +1, 0,0 ),	'-X
			New Mat3f( +1,0, 0, 0,0,+1,  0,+1,0 ),	'+Y
			New Mat3f( +1,0, 0, 0,0,-1,  0,-1,0 ),	'-Y
			New Mat3f( +1,0, 0, 0,-1,0,  0,0,+1 ),	'+Z
			New Mat3f( -1,0, 0, 0,-1,0,  0,0,-1 ) )	'-Z
			
		ValidateSize( New Vec2i( 1920,1080 ) )
	End
	
	Method ValidateSize( size:Vec2i )
		
		If _direct Return
		
		If _accumBuffer And size.x<=_accumBuffer.Size.x And size.y<=_accumBuffer.Size.y Return
		
		_accumBuffer?.Discard()
		_depthBuffer?.Discard()
		_renderTarget0?.Discard()
		_renderTarget1?.Discard()

		#If Not __MOBILE_TARGET__
		Const color_format:=PixelFormat.RGBA32F
		Const depth_format:=PixelFormat.Depth32
		#Else
		Const color_format:=PixelFormat.RGBA8
		Const depth_format:=PixelFormat.Depth32
		#Endif
		
		If _deferred
		
			_accumBuffer=New Texture( size.x,size.y,color_format,TextureFlags.Dynamic|TextureFlags.Filter )
			_colorBuffer=New Texture( size.x,size.y,color_format,TextureFlags.Dynamic|TextureFlags.Filter )
			_normalBuffer=New Texture( size.x,size.y,color_format,TextureFlags.Dynamic|TextureFlags.Filter )
			_depthBuffer=New Texture( size.x,size.y,depth_format,TextureFlags.Dynamic )
			
			_renderTarget0=New RenderTarget( New Texture[]( _accumBuffer,_colorBuffer,_normalBuffer ),_depthBuffer )
			_renderTarget1=New RenderTarget( New Texture[]( _accumBuffer ),Null )

			_runiforms.SetTexture( "AccumBuffer",_accumBuffer )
			_runiforms.SetTexture( "ColorBuffer",_colorBuffer )
			_runiforms.SetTexture( "NormalBuffer",_normalBuffer )
			_runiforms.SetTexture( "DepthBuffer",_depthBuffer )
		Else
			
			_accumBuffer=New Texture( size.x,size.y,color_format,TextureFlags.Dynamic|TextureFlags.Filter )
			_depthBuffer=New Texture( size.x,size.y,depth_format,TextureFlags.Dynamic )
			
			_renderTarget0=New RenderTarget( New Texture[]( _accumBuffer ),_depthBuffer )
			_renderTarget1=New RenderTarget( New Texture[]( _accumBuffer ),Null )

			_runiforms.SetTexture( "AccumBuffer",_accumBuffer )
			_runiforms.SetTexture( "DepthBuffer",_depthBuffer )
		Endif
		
	End
	
	Method ValidateCSMShadows()
		
		If Not _csmTexture Or _csmSize*2<>_csmTexture.Size.x
			
			_csmTarget?.Discard()
			_csmTexture?.Discard()
			_csmDepth?.Discard()

			const depth_format:=PixelFormat.Depth32
			
			_csmTexture=New Texture( _csmSize*2,_csmSize*2,depth_format,TextureFlags.Dynamic )'|TextureFlags.Filter )
			_csmTarget=New RenderTarget( Null,_csmTexture )
			_csmDepth=Null
			
			_runiforms.SetTexture( "ShadowCSMTexture",_csmTexture )
		Endif
		
	End

	Method ValidatePSMShadows()
		
		If Not _psmTexture Or _psmSize<>_psmTexture.Size.x
			
			_psmTexture?.Discard()
			_psmDepth?.Discard()
			For Local i:=0 Until 6
				_psmTargets[i]?.Discard()
			Next
			
			const color_format:=PixelFormat.RGBA8
			const depth_format:=PixelFormat.Depth32
			
			_psmTexture=New Texture( _psmSize,_psmSize,color_format,TextureFlags.Cubemap|TextureFlags.Dynamic )
			_psmDepth=New Texture( _psmSize,_psmSize,depth_format,TextureFlags.Dynamic )
			For Local i:=0 Until 6
				Local face:=_psmTexture.GetCubeFace( Cast<CubeFace>( i ) )
				_psmTargets[i]=New RenderTarget( New Texture[]( face ),_psmDepth )
			Next
			
			_runiforms.SetTexture( "ShadowCubeTexture",_psmTexture )
		Endif
		
	End
	
	Method SetOutputRenderTarget( renderTarget:RenderTarget,renderTargetSize:Vec2i,viewport:Recti )
		
		_outputRenderTarget=renderTarget
		_outputRenderTargetSize=renderTargetSize
		_outputViewport=viewport
		
		ValidateSize( viewport.Size )

		If _direct
			_gdevice.RenderTarget=renderTarget
			_gdevice.Resize( renderTargetSize )
			_gdevice.Viewport=viewport
			_gdevice.Scissor=viewport
			Return
		Endif
		
		_gdevice.RenderTarget=_renderTarget0
		_gdevice.Viewport=New Recti( 0,0,viewport.Size )
		_gdevice.Scissor=_gdevice.Viewport
	
		_runiforms.SetVec2f( "BufferCoordScale",Cast<Vec2f>( viewport.Size )/Cast<Vec2f>( _accumBuffer.Size ) )
	End
	
	Method SetScene( scene:Scene )
		
		_scene=scene
		
		_runiforms.SetTexture( "SkyTexture",_scene.SkyTexture )
		_runiforms.SetColor( "ClearColor",_scene.ClearColor )
		_runiforms.SetColor( "AmbientDiffuse",_scene.AmbientLight )
		
		Local env:Texture
		
		If _scene.EnvTexture
			env=_scene.EnvTexture
		ElseIf _scene.SkyTexture
			env=_scene.SkyTexture
		Else
			env=_defaultEnv
		Endif
		
		_runiforms.SetTexture( "EnvTexture",env )
		_runiforms.SetFloat( "EnvTextureMaxLod",Log2( env.Size.x ) )
		_runiforms.SetColor( "EnvColor",_scene.EnvColor )
		
		_runiforms.SetColor( "FogColor",_scene.FogColor )
		_runiforms.SetFloat( "FogNear",_scene.FogNear )
		_runiforms.SetFloat( "FogFar",_scene.FogFar )
		
		_runiforms.SetFloat( "ShadowAlpha",_scene.ShadowAlpha )
		
		_csmSplits=_scene.CSMSplits
		
	End
	
	Method SetCamera( viewMatrix:AffineMat4f,projMatrix:Mat4f,near:Float,far:Float )
		
		_viewMatrix=viewMatrix
		_projMatrix=projMatrix
		_near=near
		_far=far
		
		_invViewMatrix=-_viewMatrix
		_invProjMatrix=-_projMatrix

		_runiforms.SetMat3f( "EnvMatrix",_invViewMatrix.m )
		_runiforms.SetMat4f( "ProjectionMatrix",_projMatrix )
		_runiforms.SetMat4f( "InverseProjectionMatrix",_invProjMatrix )
		_runiforms.SetMat4f( "ViewMatrix",_viewMatrix )
		_runiforms.SetMat4f( "CameraMatrix",_invViewMatrix )
		_runiforms.SetFloat( "DepthNear",_near )
		_runiforms.SetFloat( "DepthFar",_far )
		
		_csmSplitDepths[0]=_near
		
		For Local i:=1 Until 5
			_csmSplitDepths[i]=Min( _csmSplitDepths[i-1]+_csmSplits[i-1],_far )
		Next
		
		_runiforms.SetVec4f( "ShadowCSMSplits",New Vec4f( _csmSplitDepths[1],_csmSplitDepths[2],_csmSplitDepths[3],_csmSplitDepths[4] ) )
		
		_renderQueue.Clear()
		
		Local time:=Float( Now() )

		_renderQueue.Time=time
		
		_runiforms.SetFloat( "Time",time )
		
		_renderQueue.EyePos=_invViewMatrix.t
		
		For Local r:=Eachin _scene.Renderables
		
			_renderQueue.CastsShadow=r.CastsShadow
			
			r.OnRender( _renderQueue )
		Next
		
		SortTransparentOps()
		
		SortSpriteOps()
		
		_spriteBuffer.InsertRenderOps( _renderQueue,_invViewMatrix )
	End
	
End