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-rw-r--r--xorg-server/glx/xfont.c397
1 files changed, 193 insertions, 204 deletions
diff --git a/xorg-server/glx/xfont.c b/xorg-server/glx/xfont.c
index 2af5996f3..a2573d4dd 100644
--- a/xorg-server/glx/xfont.c
+++ b/xorg-server/glx/xfont.c
@@ -1,204 +1,193 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
- * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#else
-
-#include "glheader.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*) &currentListIndex) );
- 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.
- */
-
- error = dixLookupResourceByType((pointer *)&pFont,
- req->font, RT_FONT,
- client, DixReadAccess);
- if (error != Success) {
- error = dixLookupResourceByType((pointer *)&pGC,
- req->font, RT_GC,
- client, DixReadAccess);
- if (error != Success) {
- client->errorValue = req->font;
- return error == BadGC ? BadFont : error;
- }
- pFont = pGC->font;
- }
-
- return MakeBitmapsFromFont(pFont, req->first, req->count,
- req->listBase);
-}
+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#else
+
+#include "glheader.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;
+ 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*) &currentListIndex) );
+ 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.
+ */
+
+ error = dixLookupFontable(&pFont, req->font, client, DixReadAccess);
+ if (error != Success)
+ return error;
+
+ return MakeBitmapsFromFont(pFont, req->first, req->count,
+ req->listBase);
+}
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