| Brian Paul | 5df82c8 | 2003-08-22 20:11:43 +0000 | [diff] [blame] | 1 | |
| 2 | /* Copyright (c) Mark J. Kilgard, 1994. */ |
| 3 | |
| 4 | /* This program is freely distributable without licensing fees |
| 5 | and is provided without guarantee or warrantee expressed or |
| 6 | implied. This program is -not- in the public domain. */ |
| 7 | |
| 8 | #include "glutbitmap.h" |
| 9 | |
| 10 | void APIENTRY |
| 11 | glutBitmapCharacter(GLUTbitmapFont font, int c) |
| 12 | { |
| 13 | const BitmapCharRec *ch; |
| 14 | BitmapFontPtr fontinfo; |
| 15 | GLfloat swapbytes, lsbfirst, rowlength; |
| 16 | GLfloat skiprows, skippixels, alignment; |
| 17 | |
| 18 | #if defined(_WIN32) |
| 19 | fontinfo = (BitmapFontPtr) __glutFont(font); |
| 20 | #else |
| 21 | fontinfo = (BitmapFontPtr) font; |
| 22 | #endif |
| 23 | |
| 24 | if (c < fontinfo->first || |
| 25 | c >= fontinfo->first + fontinfo->num_chars) |
| 26 | return; |
| 27 | ch = fontinfo->ch[c - fontinfo->first]; |
| 28 | if (ch) { |
| 29 | /* Save current modes. */ |
| 30 | /* glGetFloatv(GL_UNPACK_SWAP_BYTES, &swapbytes); */ |
| 31 | /* glGetFloatv(GL_UNPACK_LSB_FIRST, &lsbfirst); */ |
| 32 | /* glGetFloatv(GL_UNPACK_ROW_LENGTH, &rowlength); */ |
| 33 | /* glGetFloatv(GL_UNPACK_SKIP_ROWS, &skiprows); */ |
| 34 | /* glGetFloatv(GL_UNPACK_SKIP_PIXELS, &skippixels); */ |
| 35 | glGetFloatv(GL_UNPACK_ALIGNMENT, &alignment); |
| 36 | /* Little endian machines (DEC Alpha for example) could |
| 37 | benefit from setting GL_UNPACK_LSB_FIRST to GL_TRUE |
| 38 | instead of GL_FALSE, but this would require changing the |
| 39 | generated bitmaps too. */ |
| 40 | /* glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); */ |
| 41 | /* glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); */ |
| 42 | /* glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); */ |
| 43 | /* glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); */ |
| 44 | /* glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); */ |
| 45 | glPixelStorei(GL_UNPACK_ALIGNMENT, 1); |
| 46 | glBitmap(ch->width, ch->height, ch->xorig, ch->yorig, |
| 47 | ch->advance, 0, ch->bitmap); |
| 48 | /* Restore saved modes. */ |
| 49 | /* glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes); */ |
| 50 | /* glPixelStorei(GL_UNPACK_LSB_FIRST, (int)lsbfirst); */ |
| 51 | /* glPixelStorei(GL_UNPACK_ROW_LENGTH, (int)rowlength); */ |
| 52 | /* glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows); */ |
| 53 | /* glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels); */ |
| 54 | glPixelStorei(GL_UNPACK_ALIGNMENT, (int)alignment); |
| 55 | } |
| 56 | } |