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to write (render) to (Render-to-texture)?

April 26, 2017render Texture write

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to write (render) to (Render-to-texture)?

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An OpenGL extension called EXT_framebuffer_object allows you to take a texture object (created with glTexImage2D() as above) and “attach” it to a framebuffer (a renderable entity). This provides a lightweight mechanism to “divert” the output of a rendering / computation pass away from the framebuffer for immediate display, but into a texture which can be used again as input for subsequent passes. See Aaron Lefohn’s framebuffer object sourcecode for a framebuffer object class and example application. An older OpenGL extension called “pbuffers” provided a more heavy-weight way to accomplish all of this. [TODO: provide a lot more detail about pbuffers] A program that uses Direct3D can create a texture, specifying that it will be used as a render target, and then render into it by calling SetRenderTarget().