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Diffstat (limited to 'src/renderer/tr_font.c')
| -rw-r--r-- | src/renderer/tr_font.c | 555 |
1 files changed, 0 insertions, 555 deletions
diff --git a/src/renderer/tr_font.c b/src/renderer/tr_font.c deleted file mode 100644 index 432d1215..00000000 --- a/src/renderer/tr_font.c +++ /dev/null @@ -1,555 +0,0 @@ -/* -=========================================================================== -Copyright (C) 1999-2005 Id Software, Inc. -Copyright (C) 2000-2009 Darklegion Development - -This file is part of Tremulous. - -Tremulous is free software; you can redistribute it -and/or modify it under the terms of the GNU General Public License as -published by the Free Software Foundation; either version 2 of the License, -or (at your option) any later version. - -Tremulous is distributed in the hope that it will be -useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with Tremulous; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -=========================================================================== -*/ -// tr_font.c -// -// -// The font system uses FreeType 2.x to render TrueType fonts for use within the game. -// As of this writing ( Nov, 2000 ) Team Arena uses these fonts for all of the ui and -// about 90% of the cgame presentation. A few areas of the CGAME were left uses the old -// fonts since the code is shared with standard Q3A. -// -// If you include this font rendering code in a commercial product you MUST include the -// following somewhere with your product, see www.freetype.org for specifics or changes. -// The Freetype code also uses some hinting techniques that MIGHT infringe on patents -// held by apple so be aware of that also. -// -// As of Q3A 1.25+ and Team Arena, we are shipping the game with the font rendering code -// disabled. This removes any potential patent issues and it keeps us from having to -// distribute an actual TrueTrype font which is 1. expensive to do and 2. seems to require -// an act of god to accomplish. -// -// What we did was pre-render the fonts using FreeType ( which is why we leave the FreeType -// credit in the credits ) and then saved off the glyph data and then hand touched up the -// font bitmaps so they scale a bit better in GL. -// -// There are limitations in the way fonts are saved and reloaded in that it is based on -// point size and not name. So if you pre-render Helvetica in 18 point and Impact in 18 point -// you will end up with a single 18 point data file and image set. Typically you will want to -// choose 3 sizes to best approximate the scaling you will be doing in the ui scripting system -// -// In the UI Scripting code, a scale of 1.0 is equal to a 48 point font. In Team Arena, we -// use three or four scales, most of them exactly equaling the specific rendered size. We -// rendered three sizes in Team Arena, 12, 16, and 20. -// -// To generate new font data you need to go through the following steps. -// 1. delete the fontImage_x_xx.tga files and fontImage_xx.dat files from the fonts path. -// 2. in a ui script, specificy a font, smallFont, and bigFont keyword with font name and -// point size. the original TrueType fonts must exist in fonts at this point. -// 3. run the game, you should see things normally. -// 4. Exit the game and there will be three dat files and at least three tga files. The -// tga's are in 256x256 pages so if it takes three images to render a 24 point font you -// will end up with fontImage_0_24.tga through fontImage_2_24.tga -// 5. In future runs of the game, the system looks for these images and data files when a s -// specific point sized font is rendered and loads them for use. -// 6. Because of the original beta nature of the FreeType code you will probably want to hand -// touch the font bitmaps. -// -// Currently a define in the project turns on or off the FreeType code which is currently -// defined out. To pre-render new fonts you need enable the define ( BUILD_FREETYPE ) and -// uncheck the exclude from build check box in the FreeType2 area of the Renderer project. - - -#include "tr_local.h" -#include "../qcommon/qcommon.h" - -#ifdef BUILD_FREETYPE -#include <ft2build.h> -#include FT_ERRORS_H -#include FT_SYSTEM_H -#include FT_IMAGE_H -#include FT_FREETYPE_H -#include FT_OUTLINE_H - -#define _FLOOR(x) ((x) & -64) -#define _CEIL(x) (((x)+63) & -64) -#define _TRUNC(x) ((x) >> 6) - -FT_Library ftLibrary = NULL; -#endif - -#define MAX_FONTS 6 -static int registeredFontCount = 0; -static fontInfo_t registeredFont[MAX_FONTS]; - -#ifdef BUILD_FREETYPE -void R_GetGlyphInfo(FT_GlyphSlot glyph, int *left, int *right, int *width, int *top, int *bottom, int *height, int *pitch) { - *left = _FLOOR( glyph->metrics.horiBearingX ); - *right = _CEIL( glyph->metrics.horiBearingX + glyph->metrics.width ); - *width = _TRUNC(*right - *left); - - *top = _CEIL( glyph->metrics.horiBearingY ); - *bottom = _FLOOR( glyph->metrics.horiBearingY - glyph->metrics.height ); - *height = _TRUNC( *top - *bottom ); - *pitch = ( qtrue ? (*width+3) & -4 : (*width+7) >> 3 ); -} - - -FT_Bitmap *R_RenderGlyph(FT_GlyphSlot glyph, glyphInfo_t* glyphOut) { - FT_Bitmap *bit2; - int left, right, width, top, bottom, height, pitch, size; - - R_GetGlyphInfo(glyph, &left, &right, &width, &top, &bottom, &height, &pitch); - - if ( glyph->format == ft_glyph_format_outline ) { - size = pitch*height; - - bit2 = ri.Malloc(sizeof(FT_Bitmap)); - - bit2->width = width; - bit2->rows = height; - bit2->pitch = pitch; - bit2->pixel_mode = ft_pixel_mode_grays; - //bit2->pixel_mode = ft_pixel_mode_mono; - bit2->buffer = ri.Malloc(pitch*height); - bit2->num_grays = 256; - - Com_Memset( bit2->buffer, 0, size ); - - FT_Outline_Translate( &glyph->outline, -left, -bottom ); - - FT_Outline_Get_Bitmap( ftLibrary, &glyph->outline, bit2 ); - - glyphOut->height = height; - glyphOut->pitch = pitch; - glyphOut->top = (glyph->metrics.horiBearingY >> 6) + 1; - glyphOut->bottom = bottom; - - return bit2; - } else { - ri.Printf(PRINT_ALL, "Non-outline fonts are not supported\n"); - } - return NULL; -} - -void WriteTGA (char *filename, byte *data, int width, int height) { - byte *buffer; - int i, c; - int row; - unsigned char *flip; - unsigned char *src, *dst; - - buffer = ri.Malloc(width*height*4 + 18); - Com_Memset (buffer, 0, 18); - buffer[2] = 2; // uncompressed type - buffer[12] = width&255; - buffer[13] = width>>8; - buffer[14] = height&255; - buffer[15] = height>>8; - buffer[16] = 32; // pixel size - - // swap rgb to bgr - c = 18 + width * height * 4; - for (i=18 ; i<c ; i+=4) - { - buffer[i] = data[i-18+2]; // blue - buffer[i+1] = data[i-18+1]; // green - buffer[i+2] = data[i-18+0]; // red - buffer[i+3] = data[i-18+3]; // alpha - } - - // flip upside down - flip = (unsigned char *)ri.Malloc(width*4); - for(row = 0; row < height/2; row++) - { - src = buffer + 18 + row * 4 * width; - dst = buffer + 18 + (height - row - 1) * 4 * width; - - Com_Memcpy(flip, src, width*4); - Com_Memcpy(src, dst, width*4); - Com_Memcpy(dst, flip, width*4); - } - ri.Free(flip); - - ri.FS_WriteFile(filename, buffer, c); - - //f = fopen (filename, "wb"); - //fwrite (buffer, 1, c, f); - //fclose (f); - - ri.Free (buffer); -} - -static glyphInfo_t *RE_ConstructGlyphInfo(unsigned char *imageOut, int *xOut, int *yOut, int *maxHeight, FT_Face face, const unsigned char c, qboolean calcHeight) { - int i; - static glyphInfo_t glyph; - unsigned char *src, *dst; - float scaled_width, scaled_height; - FT_Bitmap *bitmap = NULL; - - Com_Memset(&glyph, 0, sizeof(glyphInfo_t)); - // make sure everything is here - if (face != NULL) { - FT_Load_Glyph(face, FT_Get_Char_Index( face, c), FT_LOAD_DEFAULT ); - bitmap = R_RenderGlyph(face->glyph, &glyph); - if (bitmap) { - glyph.xSkip = (face->glyph->metrics.horiAdvance >> 6) + 1; - } else { - return &glyph; - } - - if (glyph.height > *maxHeight) { - *maxHeight = glyph.height; - } - - if (calcHeight) { - ri.Free(bitmap->buffer); - ri.Free(bitmap); - return &glyph; - } - -/* - // need to convert to power of 2 sizes so we do not get - // any scaling from the gl upload - for (scaled_width = 1 ; scaled_width < glyph.pitch ; scaled_width<<=1) - ; - for (scaled_height = 1 ; scaled_height < glyph.height ; scaled_height<<=1) - ; -*/ - - scaled_width = glyph.pitch; - scaled_height = glyph.height; - - // we need to make sure we fit - if (*xOut + scaled_width + 1 >= 255) { - *xOut = 0; - *yOut += *maxHeight + 1; - } - - if (*yOut + *maxHeight + 1 >= 255) { - *yOut = -1; - *xOut = -1; - ri.Free(bitmap->buffer); - ri.Free(bitmap); - return &glyph; - } - - - src = bitmap->buffer; - dst = imageOut + (*yOut * 256) + *xOut; - - if (bitmap->pixel_mode == ft_pixel_mode_mono) { - for (i = 0; i < glyph.height; i++) { - int j; - unsigned char *_src = src; - unsigned char *_dst = dst; - unsigned char mask = 0x80; - unsigned char val = *_src; - for (j = 0; j < glyph.pitch; j++) { - if (mask == 0x80) { - val = *_src++; - } - if (val & mask) { - *_dst = 0xff; - } - mask >>= 1; - - if ( mask == 0 ) { - mask = 0x80; - } - _dst++; - } - - src += glyph.pitch; - dst += 256; - } - } else { - for (i = 0; i < glyph.height; i++) { - Com_Memcpy(dst, src, glyph.pitch); - src += glyph.pitch; - dst += 256; - } - } - - // we now have an 8 bit per pixel grey scale bitmap - // that is width wide and pf->ftSize->metrics.y_ppem tall - - glyph.imageHeight = scaled_height; - glyph.imageWidth = scaled_width; - glyph.s = (float)*xOut / 256; - glyph.t = (float)*yOut / 256; - glyph.s2 = glyph.s + (float)scaled_width / 256; - glyph.t2 = glyph.t + (float)scaled_height / 256; - - *xOut += scaled_width + 1; - - ri.Free(bitmap->buffer); - ri.Free(bitmap); - } - - return &glyph; -} -#endif - -static int fdOffset; -static byte *fdFile; - -int readInt( void ) { - int i = fdFile[fdOffset]+(fdFile[fdOffset+1]<<8)+(fdFile[fdOffset+2]<<16)+(fdFile[fdOffset+3]<<24); - fdOffset += 4; - return i; -} - -typedef union { - byte fred[4]; - float ffred; -} poor; - -float readFloat( void ) { - poor me; -#if defined Q3_BIG_ENDIAN - me.fred[0] = fdFile[fdOffset+3]; - me.fred[1] = fdFile[fdOffset+2]; - me.fred[2] = fdFile[fdOffset+1]; - me.fred[3] = fdFile[fdOffset+0]; -#elif defined Q3_LITTLE_ENDIAN - me.fred[0] = fdFile[fdOffset+0]; - me.fred[1] = fdFile[fdOffset+1]; - me.fred[2] = fdFile[fdOffset+2]; - me.fred[3] = fdFile[fdOffset+3]; -#endif - fdOffset += 4; - return me.ffred; -} - -void RE_RegisterFont(const char *fontName, int pointSize, fontInfo_t *font) { -#ifdef BUILD_FREETYPE - FT_Face face; - int j, k, xOut, yOut, lastStart, imageNumber; - int scaledSize, newSize, maxHeight, left; - unsigned char *out, *imageBuff; - glyphInfo_t *glyph; - image_t *image; - qhandle_t h; - float max; - float dpi = 72; - float glyphScale; -#endif - void *faceData; - int i, len; - char name[1024]; - - if (!fontName) { - ri.Printf(PRINT_ALL, "RE_RegisterFont: called with empty name\n"); - return; - } - - if (pointSize <= 0) { - pointSize = 12; - } - - R_IssuePendingRenderCommands(); - - if (registeredFontCount >= MAX_FONTS) { - ri.Printf(PRINT_WARNING, "RE_RegisterFont: Too many fonts registered already.\n"); - return; - } - - Com_sprintf(name, sizeof(name), "fonts/fontImage_%i.dat",pointSize); - for (i = 0; i < registeredFontCount; i++) { - if (Q_stricmp(name, registeredFont[i].name) == 0) { - Com_Memcpy(font, ®isteredFont[i], sizeof(fontInfo_t)); - return; - } - } - - len = ri.FS_ReadFile(name, NULL); - if (len == sizeof(fontInfo_t)) { - ri.FS_ReadFile(name, &faceData); - fdOffset = 0; - fdFile = faceData; - for(i=0; i<GLYPHS_PER_FONT; i++) { - font->glyphs[i].height = readInt(); - font->glyphs[i].top = readInt(); - font->glyphs[i].bottom = readInt(); - font->glyphs[i].pitch = readInt(); - font->glyphs[i].xSkip = readInt(); - font->glyphs[i].imageWidth = readInt(); - font->glyphs[i].imageHeight = readInt(); - font->glyphs[i].s = readFloat(); - font->glyphs[i].t = readFloat(); - font->glyphs[i].s2 = readFloat(); - font->glyphs[i].t2 = readFloat(); - font->glyphs[i].glyph = readInt(); - Q_strncpyz(font->glyphs[i].shaderName, (const char *)&fdFile[fdOffset], sizeof(font->glyphs[i].shaderName)); - fdOffset += sizeof(font->glyphs[i].shaderName); - } - font->glyphScale = readFloat(); - Com_Memcpy(font->name, &fdFile[fdOffset], MAX_QPATH); - -// Com_Memcpy(font, faceData, sizeof(fontInfo_t)); - Q_strncpyz(font->name, name, sizeof(font->name)); - for (i = GLYPH_START; i < GLYPH_END; i++) { - font->glyphs[i].glyph = RE_RegisterShaderNoMip(font->glyphs[i].shaderName); - } - Com_Memcpy(®isteredFont[registeredFontCount++], font, sizeof(fontInfo_t)); - return; - } - -#ifndef BUILD_FREETYPE - ri.Printf(PRINT_WARNING, "RE_RegisterFont: FreeType code not available\n"); -#else - if (ftLibrary == NULL) { - ri.Printf(PRINT_WARNING, "RE_RegisterFont: FreeType not initialized.\n"); - return; - } - - len = ri.FS_ReadFile(fontName, &faceData); - if (len <= 0) { - ri.Printf(PRINT_WARNING, "RE_RegisterFont: Unable to read font file '%s'\n", fontName); - return; - } - - // allocate on the stack first in case we fail - if (FT_New_Memory_Face( ftLibrary, faceData, len, 0, &face )) { - ri.Printf(PRINT_WARNING, "RE_RegisterFont: FreeType, unable to allocate new face.\n"); - return; - } - - - if (FT_Set_Char_Size( face, pointSize << 6, pointSize << 6, dpi, dpi)) { - ri.Printf(PRINT_WARNING, "RE_RegisterFont: FreeType, unable to set face char size.\n"); - return; - } - - //*font = ®isteredFonts[registeredFontCount++]; - - // make a 256x256 image buffer, once it is full, register it, clean it and keep going - // until all glyphs are rendered - - out = ri.Malloc(1024*1024); - if (out == NULL) { - ri.Printf(PRINT_WARNING, "RE_RegisterFont: ri.Malloc failure during output image creation.\n"); - return; - } - Com_Memset(out, 0, 1024*1024); - - maxHeight = 0; - - for (i = GLYPH_START; i < GLYPH_END; i++) { - RE_ConstructGlyphInfo(out, &xOut, &yOut, &maxHeight, face, (unsigned char)i, qtrue); - } - - xOut = 0; - yOut = 0; - i = GLYPH_START; - lastStart = i; - imageNumber = 0; - - while ( i <= GLYPH_END ) { - - glyph = RE_ConstructGlyphInfo(out, &xOut, &yOut, &maxHeight, face, (unsigned char)i, qfalse); - - if (xOut == -1 || yOut == -1 || i == GLYPH_END) { - // ran out of room - // we need to create an image from the bitmap, set all the handles in the glyphs to this point - // - - scaledSize = 256*256; - newSize = scaledSize * 4; - imageBuff = ri.Malloc(newSize); - left = 0; - max = 0; - for ( k = 0; k < (scaledSize) ; k++ ) { - if (max < out[k]) { - max = out[k]; - } - } - - if (max > 0) { - max = 255/max; - } - - for ( k = 0; k < (scaledSize) ; k++ ) { - imageBuff[left++] = 255; - imageBuff[left++] = 255; - imageBuff[left++] = 255; - - imageBuff[left++] = ((float)out[k] * max); - } - - Com_sprintf (name, sizeof(name), "fonts/fontImage_%i_%i.tga", imageNumber++, pointSize); - if (r_saveFontData->integer) { - WriteTGA(name, imageBuff, 256, 256); - } - - //Com_sprintf (name, sizeof(name), "fonts/fontImage_%i_%i", imageNumber++, pointSize); - image = R_CreateImage(name, imageBuff, 256, 256, qfalse, qfalse, GL_CLAMP_TO_EDGE); - h = RE_RegisterShaderFromImage(name, LIGHTMAP_2D, image, qfalse); - for (j = lastStart; j < i; j++) { - font->glyphs[j].glyph = h; - Q_strncpyz(font->glyphs[j].shaderName, name, sizeof(font->glyphs[j].shaderName)); - } - lastStart = i; - Com_Memset(out, 0, 1024*1024); - xOut = 0; - yOut = 0; - ri.Free(imageBuff); - i++; - } else { - Com_Memcpy(&font->glyphs[i], glyph, sizeof(glyphInfo_t)); - i++; - } - } - - // change the scale to be relative to 1 based on 72 dpi ( so dpi of 144 means a scale of .5 ) - glyphScale = 72.0f / dpi; - - // we also need to adjust the scale based on point size relative to 48 points as the ui scaling is based on a 48 point font - glyphScale *= 48.0f / pointSize; - - registeredFont[registeredFontCount].glyphScale = glyphScale; - font->glyphScale = glyphScale; - Com_Memcpy(®isteredFont[registeredFontCount++], font, sizeof(fontInfo_t)); - - if (r_saveFontData->integer) { - ri.FS_WriteFile(va("fonts/fontImage_%i.dat", pointSize), font, sizeof(fontInfo_t)); - } - - ri.Free(out); - - ri.FS_FreeFile(faceData); -#endif -} - - - -void R_InitFreeType(void) { -#ifdef BUILD_FREETYPE - if (FT_Init_FreeType( &ftLibrary )) { - ri.Printf(PRINT_WARNING, "R_InitFreeType: Unable to initialize FreeType.\n"); - } -#endif - registeredFontCount = 0; -} - - -void R_DoneFreeType(void) { -#ifdef BUILD_FREETYPE - if (ftLibrary) { - FT_Done_FreeType( ftLibrary ); - ftLibrary = NULL; - } -#endif - registeredFontCount = 0; -} - |