initial state (xorg-server 1.10.2)

1 files changed, 186 insertions, 0 deletions

diff --git a/glx/xfont.c b/glx/xfont.c
new file mode 100644
index 0000000..84a301f
--- /dev/null
+++ b/glx/xfont.c
@@ -0,0 +1,186 @@
+/*
+ * 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>
+#endif
+
+#include "glxserver.h"
+#include "glxutil.h"
+#include "unpack.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>
+
+/*
+** 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 *) malloc(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) );
+
+    free(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;
+
+    REQUEST_SIZE_MATCH(xGLXUseXFontReq);
+
+    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);
+}