a i‚jöã@s`dZddlmZmZmZddlmZmZddlZddlm Z m Z ddl Tddl m Z dd „Z dS) a OpenGL extension ARB.derivative_control This module customises the behaviour of the OpenGL.raw.GL.ARB.derivative_control to provide a more Python-friendly API Overview (from the spec) This extension provides control over the spacial granularity at which the underlying implementation computes derivatives. For example, for the coarse-granularity derivative, a single x derivative could be computed for each 2x2 group of pixels, using that same derivative value for all 4 pixels. For the fine-granularity derivative, two derivatives could be computed for each 2x2 group of pixels; one for the top row and one for the bottom row. Implementations vary somewhat on how this is done. To select the coarse derivative, use: dFdxCoarse(p) dFdyCoarse(p) fwidthCoarse(p) To select the fine derivative, use: dFdxFine(p) dFdyFine(p) fwidthFine(p) To select which ever is "better" (based on performance, API hints, or other factors), use: dFdx(p) dFdy(p) fwidth(p) This last set is the set of previously existing built-ins for derivatives, and continues to work in a backward compatible way. The official definition of this extension is available here: http://www.opengl.org/registry/specs/ARB/derivative_control.txt é)ÚplatformÚconstantÚarrays)Ú extensionsÚwrapperN)Ú_typesÚ_glgets)Ú*)Ú_EXTENSION_NAMEcCsddlm}| t¡S)z=Return boolean indicating whether this extension is availabler©r)ÚOpenGLrZhasGLExtensionr r ©r ú^/home/ghrups/robot-bench/.venv/lib/python3.9/site-packages/OpenGL/GL/ARB/derivative_control.pyÚglInitDerivativeControlARB3s r)Ú__doc__r rrrrrÚctypesZ OpenGL.raw.GLrrZ$OpenGL.raw.GL.ARB.derivative_controlr rr r r rÚs+