a i‚jíã@s`dZddlmZmZmZddlmZmZddlZddlm Z m Z ddl Tddl m Z dd „Z dS) aOpenGL extension NV.vertex_program1_1 This module customises the behaviour of the OpenGL.raw.GL.NV.vertex_program1_1 to provide a more Python-friendly API Overview (from the spec) This extension adds four new vertex program instructions (DPH, RCC, SUB, and ABS). This extension also supports a position-invariant vertex program option. A vertex program is position-invariant when it generates the _exact_ same homogenuous position and window space position for a vertex as conventional OpenGL transformation (ignoring vertex blending and weighting). By default, vertex programs are _not_ guaranteed to be position-invariant because there is no guarantee made that the way a vertex program might compute its homogenous position is exactly identical to the way conventional OpenGL transformation computes its homogenous positions. In a position-invariant vertex program, the homogeneous position (HPOS) is not output by the program. Instead, the OpenGL implementation is expected to compute the HPOS for position-invariant vertex programs in a manner exactly identical to how the homogenous position and window position are computed for a vertex by conventional OpenGL transformation. In this way position-invariant vertex programs guarantee correct multi-pass rendering semantics in cases where multiple passes are rendered and the second and subsequent passes use a GL_EQUAL depth test. The official definition of this extension is available here: http://www.opengl.org/registry/specs/NV/vertex_program1_1.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/NV/vertex_program1_1.pyÚglInitVertexProgram11NV*s r)Ú__doc__r rrrrrÚctypesZ OpenGL.raw.GLrrZ"OpenGL.raw.GL.NV.vertex_program1_1r rr r r rÚs"