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Old 04-26-2010, 02:37 PM
whj whj is offline
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Join Date: Apr 2008
Posts: 60
<node3d:renderNode>.attachTexture and <node3d>.texture

Hello,

I'm confused by commands attachTexture() and texture(). Anybody could explain the difference between them? Here is sample code:

Code:
for eye in [viz.RENDER_LEFT,viz.RENDER_RIGHT]:
			
	#Render textures for ping-ponging
	tex1 = viz.addRenderTexture()
	tex2 = viz.addRenderTexture()
			
	"""
	Pass 1 renders the normal scene to a texture
	"""
	pass1 = viz.addRenderNode(size=[size,size])
	pass1.attachTexture(tex1)
	pass1.setOrder(viz.PRE_RENDER,-5)
	pass1.disable(eye)
			
	"""
	Pass 2 renders the texture from pass 1 onto a quad.
	The quad has a shader attached which blurs the texture horizontally.
	"""
	pass2 = viz.addRenderNode()
	pass2.setHUD(0,200,0,200,renderQuad=True)
	pass2.setSize(size,size)
	pass2.setBuffer(viz.RENDER_FBO)
	pass2.setOrder(viz.PRE_RENDER,-4)
	pass2.attachTexture(tex2)
	pass2.texture(tex1)
	pass2.apply(horzBlurShader)
	pass2.apply(srcImageUniform)
	pass2.apply(blurScaleUniform)
	pass2.disable(eye)
			
	"""
	Pass 3 renders the texture from pass 2 onto a quad.
	The quad has a shader attached which blurs the texture vertically.
	"""
	pass3 = viz.addRenderNode()
	pass3.setHUD(0,200,0,200,renderQuad=True)
	pass3.setSize(size,size)
	pass3.setBuffer(viz.RENDER_FBO)
	pass3.setOrder(viz.PRE_RENDER,-3)
	pass3.attachTexture(tex1)
	pass3.texture(tex2)
	pass3.apply(vertBlurShader)
	pass3.apply(srcImageUniform)
	pass3.apply(blurScaleUniform)
	pass3.disable(eye)
			
	"""
	Pass 4 renders the final blurred texture to the screen
	"""
	pass4 = viz.addRenderNode()
	pass4.setHUD(0,200,0,200,renderQuad=True)
	pass4.setOrder(viz.POST_RENDER,-1)
	pass4.texture(tex1)
	pass4.disable(eye)
			
	#Save render nodes and blur uniform
	d.passes += [pass1,pass2,pass3,pass4]
Thanks a lot.
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