/* $XFree86: xc/lib/GL/glx/vertarr.c,v 1.4 2001/03/25 05:32:00 tsi 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 "glxclient.h" #include "indirect.h" #include "indirect_vertex_array.h" /*****************************************************************************/ /** * \name Vertex array pointer bridge functions * * When EXT_vertex_array was moved into the core GL spec, the \c count * parameter was lost. This libGL really only wants to implement the GL 1.1 * version, but we need to support applications that were written to the old * interface. These bridge functions are part of the glue that makes this * happen. */ /*@{*/ void __indirect_glColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid * pointer ) { (void) count; __indirect_glColorPointer( size, type, stride, pointer ); } void __indirect_glEdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean * pointer ) { (void) count; __indirect_glEdgeFlagPointer( stride, pointer ); } void __indirect_glIndexPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid * pointer ) { (void) count; __indirect_glIndexPointer( type, stride, pointer ); } void __indirect_glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid * pointer ) { (void) count; __indirect_glNormalPointer( type, stride, pointer ); } void __indirect_glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid * pointer ) { (void) count; __indirect_glTexCoordPointer( size, type, stride, pointer ); } void __indirect_glVertexPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid * pointer ) { (void) count; __indirect_glVertexPointer( size, type, stride, pointer ); } /*@}*/ /*****************************************************************************/ void __indirect_glInterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer) { __GLXcontext *gc = __glXGetCurrentContext(); __GLXattribute * state = (__GLXattribute *)(gc->client_state_private); #define NONE {0, 0, 0} #define F(x) {GL_FLOAT, x, x * sizeof(GLfloat)} #define UB4 {GL_UNSIGNED_BYTE, 4, 4 * sizeof(GLubyte)} /* Each row in this array describes the elements of a particular * interleaved array mode. Each column describes, in the order in which * they appear in the interleaved arrays, one of the four possible types * of vertex data that can appear in an interleaved array. */ struct { /** * The enum describing the GL type, as would be passed to the * appropriate gl*Pointer function. */ GLushort type; /** * Number of elements in the subarray, as would be passed (as the * \c size parameter) to the appropriate gl*Pointer function. */ GLubyte count; /** * True size of a single element in the subarray, as would be passed * (as the \c stride parameter) to the appropriate gl*Pointer * function. */ GLubyte size; } static const modes[14][4] = { /* texture color normal vertex */ {NONE, NONE, NONE, F(2)}, /* GL_V2F */ {NONE, NONE, NONE, F(3)}, /* GL_V3F */ {NONE, UB4, NONE, F(2)}, /* GL_C4UB_V2F */ {NONE, UB4, NONE, F(3)}, /* GL_C4UB_V3F */ {NONE, F(3), NONE, F(3)}, /* GL_C3F_V3F */ {NONE, NONE, F(3), F(3)}, /* GL_N3F_V3F */ {NONE, F(4), F(3), F(3)}, /* GL_C4F_N3F_V3F */ {F(2), NONE, NONE, F(3)}, /* GL_T2F_V3F */ {F(4), NONE, NONE, F(4)}, /* GL_T4F_V4F */ {F(2), UB4, NONE, F(3)}, /* GL_T2F_C4UB_V3F */ {F(2), F(3), NONE, F(3)}, /* GL_T2F_C3F_V3F */ {F(2), NONE, F(3), F(3)}, /* GL_T2F_N3F_V3F */ {F(2), F(4), F(3), F(3)}, /* GL_T2F_C4F_N3F_V3F */ {F(4), F(4), F(3), F(4)}, /* GL_T4F_C4F_N3F_V4F */ }; #undef NONE #undef F #undef UB4 GLint trueStride, size; int offsets[4]; unsigned i; const int idx = format - GL_V2F; /* All valid formats are on the range [GL_V2F, GL_V2F+0x0D]. Since idx * is just the format biased by -GL_V2F, all valid idx values are on the * range [0, 0x0D]. */ if ( (idx < 0) || (idx > 0x0D) ) { __glXSetError(gc, GL_INVALID_ENUM); return; } if ( stride < 0 ) { __glXSetError(gc, GL_INVALID_VALUE); return; } /* If the 'count' for a subarray is non-zero, then the offset of its * first element is at the currently accumulated 'size'. */ size = 0; for ( i = 0 ; i < 4 ; i++ ) { offsets[i] = (modes[idx][i].count != 0) ? size : -1; size += modes[idx][i].size; } trueStride = (stride == 0) ? size : stride; __glXArrayDisableAll( state ); if ( offsets[0] >= 0 ) { __indirect_glEnableClientState(GL_TEXTURE_COORD_ARRAY); __indirect_glTexCoordPointer( modes[idx][0].count, GL_FLOAT, trueStride, (const char *) pointer ); } if ( offsets[1] >= 0 ) { __indirect_glEnableClientState(GL_COLOR_ARRAY); __indirect_glColorPointer( modes[idx][1].count, modes[idx][1].type, trueStride, (const char *) pointer + offsets[1] ); } if ( offsets[2] >= 0 ) { __indirect_glEnableClientState(GL_NORMAL_ARRAY); __indirect_glNormalPointer( GL_FLOAT, trueStride, (const char *)pointer + offsets[2] ); } __indirect_glEnableClientState(GL_VERTEX_ARRAY); __indirect_glVertexPointer( modes[idx][3].count, GL_FLOAT, trueStride, (const char *)pointer + offsets[3] ); }