203 lines
6.2 KiB
C
203 lines
6.2 KiB
C
/* $XFree86$ */
|
|
/*
|
|
** 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.
|
|
**
|
|
*/
|
|
|
|
#define NEED_REPLIES
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include "glxserver.h"
|
|
#include "glxutil.h"
|
|
#include "unpack.h"
|
|
#include "g_disptab.h"
|
|
#include "glapitable.h"
|
|
#include "glapi.h"
|
|
#include "glthread.h"
|
|
#include "dispatch.h"
|
|
#include "indirect_dispatch.h"
|
|
#include <GL/gl.h>
|
|
#include <pixmapstr.h>
|
|
#include <windowstr.h>
|
|
#include <dixfontstr.h>
|
|
|
|
extern XID clientErrorValue; /* imported kludge from dix layer */
|
|
|
|
/*
|
|
** Make a single GL bitmap from a single X glyph
|
|
*/
|
|
static int __glXMakeBitmapFromGlyph(FontPtr font, CharInfoPtr pci)
|
|
{
|
|
int i, j;
|
|
int widthPadded; /* width of glyph in bytes, as padded by X */
|
|
int allocBytes; /* bytes to allocate to store bitmap */
|
|
int w; /* width of glyph in bits */
|
|
int h; /* height of glyph */
|
|
register unsigned char *pglyph;
|
|
register unsigned char *p;
|
|
unsigned char *allocbuf;
|
|
#define __GL_CHAR_BUF_SIZE 2048
|
|
unsigned char buf[__GL_CHAR_BUF_SIZE];
|
|
|
|
w = GLYPHWIDTHPIXELS(pci);
|
|
h = GLYPHHEIGHTPIXELS(pci);
|
|
widthPadded = GLYPHWIDTHBYTESPADDED(pci);
|
|
|
|
/*
|
|
** Use the local buf if possible, otherwise malloc.
|
|
*/
|
|
allocBytes = widthPadded * h;
|
|
if (allocBytes <= __GL_CHAR_BUF_SIZE) {
|
|
p = buf;
|
|
allocbuf = 0;
|
|
} else {
|
|
p = (unsigned char *) xalloc(allocBytes);
|
|
if (!p)
|
|
return BadAlloc;
|
|
allocbuf = p;
|
|
}
|
|
|
|
/*
|
|
** We have to reverse the picture, top to bottom
|
|
*/
|
|
|
|
pglyph = FONTGLYPHBITS(FONTGLYPHS(font), pci) + (h-1)*widthPadded;
|
|
for (j=0; j < h; j++) {
|
|
for (i=0; i < widthPadded; i++) {
|
|
p[i] = pglyph[i];
|
|
}
|
|
pglyph -= widthPadded;
|
|
p += widthPadded;
|
|
}
|
|
CALL_Bitmap( GET_DISPATCH(), (w, h, -pci->metrics.leftSideBearing,
|
|
pci->metrics.descent,
|
|
pci->metrics.characterWidth, 0,
|
|
allocbuf ? allocbuf : buf) );
|
|
|
|
if (allocbuf) {
|
|
xfree(allocbuf);
|
|
}
|
|
return Success;
|
|
#undef __GL_CHAR_BUF_SIZE
|
|
}
|
|
|
|
/*
|
|
** Create a GL bitmap for each character in the X font. The bitmap is stored
|
|
** in a display list.
|
|
*/
|
|
|
|
static int
|
|
MakeBitmapsFromFont(FontPtr pFont, int first, int count, int list_base)
|
|
{
|
|
unsigned long i, nglyphs;
|
|
CARD8 chs[2]; /* the font index we are going after */
|
|
CharInfoPtr pci;
|
|
int rv; /* return value */
|
|
int encoding = (FONTLASTROW(pFont) == 0) ? Linear16Bit : TwoD16Bit;
|
|
|
|
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SWAP_BYTES, FALSE) );
|
|
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_LSB_FIRST, BITMAP_BIT_ORDER == LSBFirst) );
|
|
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH, 0) );
|
|
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS, 0) );
|
|
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS, 0) );
|
|
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ALIGNMENT, GLYPHPADBYTES) );
|
|
for (i=0; i < count; i++) {
|
|
chs[0] = (first + i) >> 8; /* high byte is first byte */
|
|
chs[1] = first + i;
|
|
|
|
(*pFont->get_glyphs)(pFont, 1, chs, (FontEncoding)encoding,
|
|
&nglyphs, &pci);
|
|
|
|
/*
|
|
** Define a display list containing just a glBitmap() call.
|
|
*/
|
|
CALL_NewList( GET_DISPATCH(), (list_base + i, GL_COMPILE) );
|
|
if (nglyphs ) {
|
|
rv = __glXMakeBitmapFromGlyph(pFont, pci);
|
|
if (rv) {
|
|
return rv;
|
|
}
|
|
}
|
|
CALL_EndList( GET_DISPATCH(), () );
|
|
}
|
|
return Success;
|
|
}
|
|
|
|
/************************************************************************/
|
|
|
|
int __glXDisp_UseXFont(__GLXclientState *cl, GLbyte *pc)
|
|
{
|
|
ClientPtr client = cl->client;
|
|
xGLXUseXFontReq *req;
|
|
FontPtr pFont;
|
|
GC *pGC;
|
|
GLuint currentListIndex;
|
|
__GLXcontext *cx;
|
|
int error;
|
|
|
|
req = (xGLXUseXFontReq *) pc;
|
|
cx = __glXForceCurrent(cl, req->contextTag, &error);
|
|
if (!cx) {
|
|
return error;
|
|
}
|
|
|
|
CALL_GetIntegerv( GET_DISPATCH(), (GL_LIST_INDEX, (GLint*) ¤tListIndex) );
|
|
if (currentListIndex != 0) {
|
|
/*
|
|
** A display list is currently being made. It is an error
|
|
** to try to make a font during another lists construction.
|
|
*/
|
|
client->errorValue = cx->id;
|
|
return __glXError(GLXBadContextState);
|
|
}
|
|
|
|
/*
|
|
** Font can actually be either the ID of a font or the ID of a GC
|
|
** containing a font.
|
|
*/
|
|
pFont = (FontPtr)LookupIDByType(req->font, RT_FONT);
|
|
if (!pFont) {
|
|
pGC = (GC *)LookupIDByType(req->font, RT_GC);
|
|
if (!pGC) {
|
|
client->errorValue = req->font;
|
|
return BadFont;
|
|
}
|
|
pFont = pGC->font;
|
|
}
|
|
|
|
return MakeBitmapsFromFont(pFont, req->first, req->count,
|
|
req->listBase);
|
|
}
|