a i‚jÍã@s`dZddlmZmZmZddlmZmZddlZddlm Z m Z ddl Tddl m Z dd „Z dS) aóOpenGL extension NV.texgen_emboss This module customises the behaviour of the OpenGL.raw.GL.NV.texgen_emboss to provide a more Python-friendly API Overview (from the spec) This extension provides a new texture coordinate generation mode suitable for multitexture-based embossing (or bump mapping) effects. Given two texture units, this extension generates the texture coordinates of a second texture unit (an odd-numbered texture unit) as a perturbation of a first texture unit (an even-numbered texture unit one less than the second texture unit). The perturbation is based on the normal, tangent, and light vectors. The normal vector is supplied by glNormal; the light vector is supplied as a direction vector to a specified OpenGL light's position; and the tanget vector is supplied by the second texture unit's current texture coordinate. The perturbation is also scaled by program-supplied scaling constants. If both texture units are bound to the same texture representing a height field, by subtracting the difference between the resulting two filtered texels, programs can achieve a per-pixel embossing effect. The official definition of this extension is available here: http://www.opengl.org/registry/specs/NV/texgen_emboss.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 úX/home/ghrups/robot-bench/.venv/lib/python3.9/site-packages/OpenGL/GL/NV/texgen_emboss.pyÚglInitTexgenEmbossNV%s r)Ú__doc__r rrrrrÚctypesZ OpenGL.raw.GLrrZOpenGL.raw.GL.NV.texgen_embossr rr r r rÚs