/* $XFree86: xc/lib/GL/glx/pixelstore.c,v 1.3 2001/03/21 16:04:39 dawes Exp $ */ /* ** License Applicability. Except to the extent portions of this file are ** made subject to an alternative license as permitted in the SGI Free ** Software License B, Version 1.1 (the "License"), the contents of this ** file are subject only to the provisions of the License. You may not use ** this file except in compliance with the License. You may obtain a copy ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: ** ** http://oss.sgi.com/projects/FreeB ** ** Note that, as provided in the License, the Software is distributed on an ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. ** ** Original Code. The Original Code is: OpenGL Sample Implementation, ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. ** Copyright in any portions created by third parties is as indicated ** elsewhere herein. All Rights Reserved. ** ** Additional Notice Provisions: The application programming interfaces ** established by SGI in conjunction with the Original Code are The ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X ** Window System(R) (Version 1.3), released October 19, 1998. This software ** was created using the OpenGL(R) version 1.2.1 Sample Implementation ** published by SGI, but has not been independently verified as being ** compliant with the OpenGL(R) version 1.2.1 Specification. ** */ #include "packsingle.h" /* ** Specify parameters that control the storage format of pixel arrays. */ void glPixelStoref(GLenum pname, GLfloat param) { __GLXcontext *gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; GLuint a; if (!dpy) return; switch (pname) { case GL_PACK_ROW_LENGTH: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.rowLength = a; break; case GL_PACK_IMAGE_HEIGHT: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.imageHeight = a; break; case GL_PACK_SKIP_ROWS: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.skipRows = a; break; case GL_PACK_SKIP_PIXELS: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.skipPixels = a; break; case GL_PACK_SKIP_IMAGES: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.skipImages = a; break; case GL_PACK_ALIGNMENT: a = (GLint) (param + 0.5); switch (a) { case 1: case 2: case 4: case 8: gc->state.storePack.alignment = a; break; default: __glXSetError(gc, GL_INVALID_VALUE); return; } break; case GL_PACK_SWAP_BYTES: gc->state.storePack.swapEndian = (param != 0); break; case GL_PACK_LSB_FIRST: gc->state.storePack.lsbFirst = (param != 0); break; case GL_UNPACK_ROW_LENGTH: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.rowLength = a; break; case GL_UNPACK_IMAGE_HEIGHT: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.imageHeight = a; break; case GL_UNPACK_SKIP_ROWS: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.skipRows = a; break; case GL_UNPACK_SKIP_PIXELS: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.skipPixels = a; break; case GL_UNPACK_SKIP_IMAGES: a = (GLuint) (param + 0.5); if (((GLint) a) < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.skipImages = a; break; case GL_UNPACK_ALIGNMENT: a = (GLint) (param + 0.5); switch (a) { case 1: case 2: case 4: case 8: gc->state.storeUnpack.alignment = a; break; default: __glXSetError(gc, GL_INVALID_VALUE); return; } break; case GL_UNPACK_SWAP_BYTES: gc->state.storeUnpack.swapEndian = (param != 0); break; case GL_UNPACK_LSB_FIRST: gc->state.storeUnpack.lsbFirst = (param != 0); break; default: /* ** NOTE: there are currently no pixel storage commands that need to ** be sent to the server. This may change in future versions ** of the API, however. */ __glXSetError(gc, GL_INVALID_ENUM); break; } } void glPixelStorei(GLenum pname, GLint param) { __GLXcontext *gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; switch (pname) { case GL_PACK_ROW_LENGTH: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.rowLength = param; break; case GL_PACK_IMAGE_HEIGHT: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.imageHeight = param; break; case GL_PACK_SKIP_ROWS: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.skipRows = param; break; case GL_PACK_SKIP_PIXELS: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.skipPixels = param; break; case GL_PACK_SKIP_IMAGES: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storePack.skipImages = param; break; case GL_PACK_ALIGNMENT: switch (param) { case 1: case 2: case 4: case 8: gc->state.storePack.alignment = param; break; default: __glXSetError(gc, GL_INVALID_VALUE); return; } break; case GL_PACK_SWAP_BYTES: gc->state.storePack.swapEndian = (param != 0); break; case GL_PACK_LSB_FIRST: gc->state.storePack.lsbFirst = (param != 0); break; case GL_UNPACK_ROW_LENGTH: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.rowLength = param; break; case GL_UNPACK_IMAGE_HEIGHT: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.imageHeight = param; break; case GL_UNPACK_SKIP_ROWS: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.skipRows = param; break; case GL_UNPACK_SKIP_PIXELS: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.skipPixels = param; break; case GL_UNPACK_SKIP_IMAGES: if (param < 0) { __glXSetError(gc, GL_INVALID_VALUE); return; } gc->state.storeUnpack.skipImages = param; break; case GL_UNPACK_ALIGNMENT: switch (param) { case 1: case 2: case 4: case 8: gc->state.storeUnpack.alignment = param; break; default: __glXSetError(gc, GL_INVALID_VALUE); return; } break; case GL_UNPACK_SWAP_BYTES: gc->state.storeUnpack.swapEndian = (param != 0); break; case GL_UNPACK_LSB_FIRST: gc->state.storeUnpack.lsbFirst = (param != 0); break; default: /* ** NOTE: there are currently no pixel storage commands that need to ** be sent to the server. This may change in future versions ** of the API, however. */ __glXSetError(gc, GL_INVALID_ENUM); break; } }