José Fonseca
60159c1b09
Windows/DOS users should enable core.autocrlf from now on: git config --global core.autocrlf true
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
|
|
/* Copyright (c) Mark J. Kilgard, 1994. */
|
|
|
|
/* This program is freely distributable without licensing fees
|
|
and is provided without guarantee or warrantee expressed or
|
|
implied. This program is -not- in the public domain. */
|
|
|
|
#include "glutint.h"
|
|
#include "glutbitmap.h"
|
|
|
|
void GLUTAPIENTRY
|
|
glutBitmapCharacter(GLUTbitmapFont font, int c)
|
|
{
|
|
const BitmapCharRec *ch;
|
|
BitmapFontPtr fontinfo;
|
|
GLint swapbytes, lsbfirst, rowlength;
|
|
GLint skiprows, skippixels, alignment;
|
|
|
|
#if defined(_WIN32)
|
|
fontinfo = (BitmapFontPtr) __glutFont(font);
|
|
#else
|
|
fontinfo = (BitmapFontPtr) font;
|
|
#endif
|
|
|
|
if (c < fontinfo->first ||
|
|
c >= fontinfo->first + fontinfo->num_chars)
|
|
return;
|
|
ch = fontinfo->ch[c - fontinfo->first];
|
|
if (ch) {
|
|
/* Save current modes. */
|
|
glGetIntegerv(GL_UNPACK_SWAP_BYTES, &swapbytes);
|
|
glGetIntegerv(GL_UNPACK_LSB_FIRST, &lsbfirst);
|
|
glGetIntegerv(GL_UNPACK_ROW_LENGTH, &rowlength);
|
|
glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skiprows);
|
|
glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skippixels);
|
|
glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment);
|
|
/* Little endian machines (DEC Alpha for example) could
|
|
benefit from setting GL_UNPACK_LSB_FIRST to GL_TRUE
|
|
instead of GL_FALSE, but this would require changing the
|
|
generated bitmaps too. */
|
|
glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
|
|
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
|
|
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
|
|
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
|
|
glBitmap(ch->width, ch->height, ch->xorig, ch->yorig,
|
|
ch->advance, 0, ch->bitmap);
|
|
/* Restore saved modes. */
|
|
glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes);
|
|
glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst);
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength);
|
|
glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows);
|
|
glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels);
|
|
glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
|
|
}
|
|
}
|