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Diffstat (limited to 'nx-X11/extras/Mesa/src/glx/x11/vertarr.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/glx/x11/vertarr.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/glx/x11/vertarr.c b/nx-X11/extras/Mesa/src/glx/x11/vertarr.c new file mode 100644 index 000000000..483a166ea --- /dev/null +++ b/nx-X11/extras/Mesa/src/glx/x11/vertarr.c @@ -0,0 +1,203 @@ +/* $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] ); +} |