HP Workstation zx2000 OpenGL 1.1 Reference for HP-UX 11.x - Page 184

G glGet 184 params returns one value, the data type of each coordinate in the vertex array. The initial value is GL_FLOAT. See glVertexPointer. GL_VIEWPORT params returns four values: the x and y window coordinates of the viewport, followed by its width and height. Initially the x and y window coordinates are both set to 0, and the width and height are set to the width and height of the window into which the GL will do its rendering. See glViewport. GL_ZOOM_X params returns one value, the x pixel zoom factor. The initial value is 1. See glPixelZoom. GL_ZOOM_Y params returns one value, the y pixel zoom factor. The initial value is 1. See glPixelZoom. Many of the boolean parameters can also be queried more easily using glIsEnabled. Notes GL_COLOR_LOGIC_OP, GL_COLOR_ARRAY, GL_COLOR_ARRAY_SIZE, GL_COLOR_ARRAY_STRIDE, GL_COLOR_ARRAY_TYPE, GL_EDGE_FLAG_ARRAY, GL_EDGE_FLAG_ARRAY_STRIDE, GL_INDEX_ARRAY, GL_INDEX_ARRAY_STRIDE, GL_INDEX_ARRAY_TYPE, GL_INDEX_LOGIC_OP, GL_NORMAL_ARRAY, GL_NORMAL_ARRAY_STRIDE, GL_NORMAL_ARRAY_TYPE, GL_POLYGON_OFFSET_UNITS, GL_POLYGON_OFFSET_FACTOR, GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_LINE, GL_POLYGON_OFFSET_POINT, GL_TEXTURE_COORD_ARRAY, GL_TEXTURE_COORD_ARRAY_SIZE, GL_TEXTURE_COORD_ARRAY_STRIDE, GL_TEXTURE_COORD_ARRAY_TYPE, GL_VERTEX_ARRAY, GL_VERTEX_ARRAY_SIZE, GL_VERTEX_ARRAY_STRIDE, and GL_VERTEX_ARRAY_TYPE are available only if the GL version is 1.1 or greater. Errors • GL_INVALID_ENUM is generated if pname is not an accepted value. • GL_INVALID_OPERATION is generated if glGet is executed between the execution of glBegin and the corresponding execution of glEnd. See Also glGetClipPlane, glGetError, glGetLight, glGetMap, glGetMaterial, glGetPixelMap, glGetPointer, glGetPolygonStipple, glGetString, glGetTexEnv, Chapter 7