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A Panda3D utility to simplify setting up multi-pass rendering systems

Project description

Render Pass

This library is intended to make multi-pass rendering a little easier in Panda3D. Each RenderPass objects represents a render target and a scene to render. If no scene is given, a fullscreen quad is rendered. This library is meant to replace the FilterManager found in Panda3D's Direct library.

Example

The code below was added to the "Roaming Ralph" demo to do HDR rendering. The full sample can be found in samples/roaming-ralph.

        self.render.set_attrib(LightRampAttrib.make_identity())
        fb_props = FrameBufferProperties()
        fb_props.set_float_color(True)
        fb_props.set_rgba_bits(16, 16, 16, 0)
        fb_props.set_depth_bits(32)

        scene_pass = RenderPass(
            'scene',
            camera=base.camera,
            scene=base.render,
            frame_buffer_properties=fb_props,
            clear_color=LColor(0.53, 0.80, 0.92, 1),
        )

        filter_pass = RenderPass(
            'filter',
            shader=Shader.load(Shader.SL_GLSL, 'shaders/fsq.vert', 'shaders/fsq.frag')
        )
        filter_pass._root.set_shader_input('render', scene_pass.output)

        card = filter_pass.buffer.getTextureCard()
        card.setTexture(filter_pass.output)
        card.reparentTo(render2d)

Project details


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