2004-10-25 22:09:16 +01:00
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/* $XFree86: xc/lib/GL/glx/vertarr.c,v 1.4 2001/03/25 05:32:00 tsi Exp $ */
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/*
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** License Applicability. Except to the extent portions of this file are
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** made subject to an alternative license as permitted in the SGI Free
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** Software License B, Version 1.1 (the "License"), the contents of this
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** file are subject only to the provisions of the License. You may not use
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** this file except in compliance with the License. You may obtain a copy
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** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
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** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
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**
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** http://oss.sgi.com/projects/FreeB
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**
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** Note that, as provided in the License, the Software is distributed on an
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** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
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** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
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** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
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** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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**
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** Original Code. The Original Code is: OpenGL Sample Implementation,
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** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
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** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
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** Copyright in any portions created by third parties is as indicated
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** elsewhere herein. All Rights Reserved.
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**
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** Additional Notice Provisions: The application programming interfaces
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** established by SGI in conjunction with the Original Code are The
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** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
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** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
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** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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** Window System(R) (Version 1.3), released October 19, 1998. This software
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** was created using the OpenGL(R) version 1.2.1 Sample Implementation
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** published by SGI, but has not been independently verified as being
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** compliant with the OpenGL(R) version 1.2.1 Specification.
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**
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*/
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#include "glxclient.h"
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2004-12-01 08:02:50 +00:00
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#include "indirect.h"
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2005-02-22 22:36:31 +00:00
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#include "indirect_vertex_array.h"
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2004-10-25 22:09:16 +01:00
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/*****************************************************************************/
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2004-12-01 08:15:01 +00:00
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/**
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* \name Vertex array pointer bridge functions
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*
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* When EXT_vertex_array was moved into the core GL spec, the \c count
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* parameter was lost. This libGL really only wants to implement the GL 1.1
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* version, but we need to support applications that were written to the old
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* interface. These bridge functions are part of the glue that makes this
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* happen.
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*/
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/*@{*/
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void __indirect_glColorPointerEXT(GLint size, GLenum type, GLsizei stride,
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GLsizei count, const GLvoid * pointer )
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{
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(void) count; __indirect_glColorPointer( size, type, stride, pointer );
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}
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void __indirect_glEdgeFlagPointerEXT(GLsizei stride,
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GLsizei count, const GLboolean * pointer )
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{
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(void) count; __indirect_glEdgeFlagPointer( stride, pointer );
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}
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void __indirect_glIndexPointerEXT(GLenum type, GLsizei stride,
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GLsizei count, const GLvoid * pointer )
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{
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(void) count; __indirect_glIndexPointer( type, stride, pointer );
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}
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void __indirect_glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
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const GLvoid * pointer )
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{
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(void) count; __indirect_glNormalPointer( type, stride, pointer );
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}
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void __indirect_glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
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GLsizei count, const GLvoid * pointer )
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{
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(void) count; __indirect_glTexCoordPointer( size, type, stride, pointer );
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}
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void __indirect_glVertexPointerEXT(GLint size, GLenum type, GLsizei stride,
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GLsizei count, const GLvoid * pointer )
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{
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(void) count; __indirect_glVertexPointer( size, type, stride, pointer );
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}
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/*@}*/
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/*****************************************************************************/
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2004-12-01 08:02:50 +00:00
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void __indirect_glInterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
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{
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__GLXcontext *gc = __glXGetCurrentContext();
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__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
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2005-11-30 00:06:48 +00:00
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#define NONE {0, 0, 0}
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#define F(x) {GL_FLOAT, x, x * sizeof(GLfloat)}
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#define UB4 {GL_UNSIGNED_BYTE, 4, 4 * sizeof(GLubyte)}
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/* Each row in this array describes the elements of a particular
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* interleaved array mode. Each column describes, in the order in which
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* they appear in the interleaved arrays, one of the four possible types
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* of vertex data that can appear in an interleaved array.
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*/
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struct {
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/**
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* The enum describing the GL type, as would be passed to the
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* appropriate gl*Pointer function.
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*/
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GLushort type;
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/**
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* Number of elements in the subarray, as would be passed (as the
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* \c size parameter) to the appropriate gl*Pointer function.
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*/
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GLubyte count;
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/**
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* True size of a single element in the subarray, as would be passed
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* (as the \c stride parameter) to the appropriate gl*Pointer
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* function.
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*/
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GLubyte size;
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}
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static const modes[14][4] = {
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/* texture color normal vertex */
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{NONE, NONE, NONE, F(2)}, /* GL_V2F */
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{NONE, NONE, NONE, F(3)}, /* GL_V3F */
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{NONE, UB4, NONE, F(2)}, /* GL_C4UB_V2F */
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{NONE, UB4, NONE, F(3)}, /* GL_C4UB_V3F */
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{NONE, F(3), NONE, F(3)}, /* GL_C3F_V3F */
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{NONE, NONE, F(3), F(3)}, /* GL_N3F_V3F */
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{NONE, F(4), F(3), F(3)}, /* GL_C4F_N3F_V3F */
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{F(2), NONE, NONE, F(3)}, /* GL_T2F_V3F */
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{F(4), NONE, NONE, F(4)}, /* GL_T4F_V4F */
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{F(2), UB4, NONE, F(3)}, /* GL_T2F_C4UB_V3F */
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{F(2), F(3), NONE, F(3)}, /* GL_T2F_C3F_V3F */
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{F(2), NONE, F(3), F(3)}, /* GL_T2F_N3F_V3F */
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{F(2), F(4), F(3), F(3)}, /* GL_T2F_C4F_N3F_V3F */
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{F(4), F(4), F(3), F(4)}, /* GL_T4F_C4F_N3F_V4F */
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};
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#undef NONE
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#undef F
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#undef UB4
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GLint trueStride, size;
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int offsets[4];
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unsigned i;
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const int idx = format - GL_V2F;
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2005-11-30 00:06:48 +00:00
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/* All valid formats are on the range [GL_V2F, GL_V2F+0x0D]. Since idx
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* is just the format biased by -GL_V2F, all valid idx values are on the
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* range [0, 0x0D].
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*/
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if ( (idx < 0) || (idx > 0x0D) ) {
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__glXSetError(gc, GL_INVALID_ENUM);
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return;
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}
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2005-11-30 00:06:48 +00:00
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if ( stride < 0 ) {
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__glXSetError(gc, GL_INVALID_VALUE);
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return;
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}
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/* If the 'count' for a subarray is non-zero, then the offset of its
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* first element is at the currently accumulated 'size'.
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*/
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size = 0;
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for ( i = 0 ; i < 4 ; i++ ) {
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offsets[i] = (modes[idx][i].count != 0) ? size : -1;
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size += modes[idx][i].size;
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}
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2004-10-25 22:09:16 +01:00
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trueStride = (stride == 0) ? size : stride;
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2005-02-22 22:36:31 +00:00
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__glXArrayDisableAll( state );
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2005-11-30 00:06:48 +00:00
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if ( offsets[0] >= 0 ) {
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__indirect_glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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__indirect_glTexCoordPointer( modes[idx][0].count, GL_FLOAT,
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trueStride,
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(const char *) pointer );
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}
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if ( offsets[1] >= 0 ) {
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__indirect_glEnableClientState(GL_COLOR_ARRAY);
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__indirect_glColorPointer( modes[idx][1].count, modes[idx][1].type,
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trueStride,
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(const char *) pointer + offsets[1] );
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}
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2005-11-30 00:06:48 +00:00
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if ( offsets[2] >= 0 ) {
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__indirect_glEnableClientState(GL_NORMAL_ARRAY);
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2005-11-30 00:06:48 +00:00
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__indirect_glNormalPointer( GL_FLOAT, trueStride,
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(const char *)pointer + offsets[2] );
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}
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__indirect_glEnableClientState(GL_VERTEX_ARRAY);
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__indirect_glVertexPointer( modes[idx][3].count, GL_FLOAT,
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trueStride,
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(const char *)pointer + offsets[3] );
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2004-10-25 22:09:16 +01:00
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}
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