void TextureFont::MeasureCharacterPos(const std::string &str, int charIndex, float &charX, float &charY)
{
assert(charIndex >= 0);
float x = 0.0f, y = GetHeight();
int i = 0;
Uint32 chr;
int len = utf8_decode_char(&chr, &str[i]);
while (str[i] && (i < charIndex)) {
Uint32 nextChar;
i += len;
len = utf8_decode_char(&nextChar, &str[i]);
assert(!str[i] || len); // assert valid encoding
if (chr == '\n') {
x = 0.0f;
y += GetHeight();
} else {
const Glyph &glyph = GetGlyph(chr);
float advance = glyph.advX;
if (nextChar != '\n' && nextChar != '\0')
advance += GetKern(glyph, GetGlyph(nextChar));
x += advance;
}
chr = nextChar;
}
charX = x;
charY = y;
}
int TextureFont::PickCharacter(const char *str, float mouseX, float mouseY) const
{
assert(str && mouseX >= 0.0f && mouseY >= 0.0f);
// at the point of the mouse in-box test, the vars have the following values:
// i1: the index of the character being tested
// i2: the index of the next character
// charBytes: the number of bytes used to encode the next character
// right: the right edge of the box being tested
// bottom: the bottom of the box being tested
// x: the x-coordinate of the next character
// chr1: the Unicode value of the character being tested
// chr2: the Unicode value of the next character
Uint32 chr2 = '\n'; // pretend we've just had a new line
float bottom = 0.0f, x = 0.0f;
int i2 = 0, charBytes = 0;
do {
int i1 = i2;
Uint32 chr1 = chr2;
// read the next character
i2 += charBytes;
charBytes = utf8_decode_char(&chr2, &str[i2]);
assert(!str[i2] || charBytes); // assert valid encoding
float right;
if (chr1 == '\n') {
right = std::numeric_limits<float>::max();
x = 0.0f;
} else {
const glfglyph_t &glyph = GetGlyph(chr1);
float advance = glyph.advx;
if (chr2 != '\n' && chr2 != '\0') {
FT_Vector kern;
FT_Get_Kerning(m_face, glyph.ftIndex, GetGlyph(chr2).ftIndex, FT_KERNING_UNFITTED, &kern);
advance += float(kern.x) / 64.0f;
}
right = x + (advance / 2.0f);
x += advance;
}
if ((mouseY < bottom) && (mouseX < right))
return i1;
if (chr1 == '\n')
bottom += GetHeight();
} while (charBytes);
return i2;
}
void FontInstance::DrawFinal( QuadTexture* Surface,const int Px, const int Py,Utf32String& Str,const unsigned long Color,bool Gen)
{
ScopedLock Sl(Lock);
FT_Error Error;
ScanLineUserInfo Info;
FT_Glyph AGlyphs[512]; /* glyph image */
FT_Vector APos [512]; /* glyph position */
//get all glyph and compute rendering pos
int PosX=0;
int PosY=0; //Py+(Face->height>>6)/3;
unsigned int GlyphArrIdx=0;
for (unsigned int i=0;i<Str.size();i++)
{
//retrieve the glyph with the UTF-32 code
AGlyphs[GlyphArrIdx]=GetGlyph(Str[i]);
if (AGlyphs[GlyphArrIdx]!=0)
{
/* store current pen position */
APos[GlyphArrIdx].x = PosX;
APos[GlyphArrIdx].y = PosY;
//advance is in 16.16 fixed format
PosX+=AGlyphs[GlyphArrIdx]->advance.x>>16;
PosY+=AGlyphs[GlyphArrIdx]->advance.y>>16;
GlyphArrIdx++;
}
}
int Font::GetLineWidthInSourcePixels( const wstring &szLine ) const
{
int iLineWidth = 0;
for( unsigned i=0; i<szLine.size(); i++ )
iLineWidth += GetGlyph(szLine[i]).m_iHadvance;
if( szLine.size() > 0 )
{
/* Add overdraw. */
iLineWidth += GetGlyph(szLine[0]).m_pPage->m_iDrawExtraPixelsLeft;
iLineWidth += GetGlyph(szLine[szLine.size()-1]).m_pPage->m_iDrawExtraPixelsRight;
}
return iLineWidth;
}
void OpenGLText::DrawString(const std::string &text, int x, int y) {
for (char curChar : text) {
OpenGLTextGlyph const& glyph = GetGlyph(curChar);
glyph.Draw(x, y);
x += glyph.w;
}
}
void OpenGLText::GetExtent(wxString const& text, int &w, int &h) {
lineHeight = 0;
int dx=0, dy=0;
w = 0;
h = 0;
// Simulate drawing of string
for (int curChar : text) {
// Handle carriage returns
if (curChar == '\n') {
if (dx > w) w = dx;
dx = 0;
dy += lineHeight;
lineHeight = 0;
}
// Handle normal glyphs
else {
OpenGLTextGlyph const& glyph = GetGlyph(curChar);
dx += glyph.w;
if (glyph.h > lineHeight) lineHeight = glyph.h;
}
}
// Return results
if (dx > w) w = dx;
h = dy+lineHeight;
}
void OpenGLText::GetExtent(std::string const& text, int &w, int &h) {
w = h = 0;
for (char curChar : text) {
OpenGLTextGlyph const& glyph = GetGlyph(curChar);
w += glyph.w;
h = std::max(h, glyph.h);
}
}
TBFontGlyph *TBFontGlyphCache::CreateAndCacheGlyph(const TBID &hash_id, UCS4 cp)
{
assert(!GetGlyph(hash_id, cp));
TBFontGlyph *glyph = new TBFontGlyph(hash_id, cp);
if (glyph && m_glyphs.Add(glyph->hash_id, glyph))
return glyph;
delete glyph;
return nullptr;
}
int Font::GetLineWidthInSourcePixels( const wstring &szLine ) const
{
int iLineWidth = 0;
for( unsigned i=0; i<szLine.size(); i++ )
iLineWidth += GetGlyph(szLine[i]).m_iHadvance;
return iLineWidth;
}
int Font::GetLineHeightInSourcePixels( const wstring &szLine ) const
{
int iLineHeight = 0;
/* The height of a line is the height of its tallest used font page. */
for( unsigned i=0; i<szLine.size(); i++ )
iLineHeight = max( iLineHeight, GetGlyph(szLine[i]).m_pPage->m_iHeight );
return iLineHeight;
}
float CglFont::GetTextWidth_(const std::u8string& text)
{
if (text.empty()) return 0.0f;
float w = 0.0f;
float maxw = 0.0f;
const GlyphInfo* prv_g=NULL;
const GlyphInfo* cur_g;
int pos = 0;
while (pos < text.length()) {
const char32_t u = Utf8GetNextChar(text, pos);
switch (u) {
// inlined colorcode
case ColorCodeIndicator:
pos = SkipColorCodes(text, pos - 1);
if (pos<0) {
pos = text.length();
}
break;
// reset color
case ColorResetIndicator:
break;
// newline
case 0x0d: // CR+LF
if (pos < text.length() && text[pos] == 0x0a)
pos++;
case 0x0a: // LF
if (prv_g)
w += prv_g->advance;
if (w > maxw)
maxw = w;
w = 0.0f;
prv_g = NULL;
break;
// printable char
default:
cur_g = &GetGlyph(u);
if (prv_g) w += GetKerning(*prv_g, *cur_g);
prv_g = cur_g;
}
}
if (prv_g)
w += prv_g->advance;
if (w > maxw)
maxw = w;
return maxw;
}
void TextureFont::RenderString(const char *str, float x, float y, const Color &color)
{
PROFILE_SCOPED()
m_vertices.Clear();
float alpha_f = color.a / 255.0f;
const Color premult_color = Color(color.r * alpha_f, color.g * alpha_f, color.b * alpha_f, color.a);
float px = x;
float py = y;
int i = 0;
while (str[i]) {
if (str[i] == '\n') {
px = x;
py += GetHeight();
i++;
}
else {
Uint32 chr;
int n = utf8_decode_char(&chr, &str[i]);
assert(n);
i += n;
const Glyph &glyph = GetGlyph(chr);
AddGlyphGeometry(&m_vertices, glyph, roundf(px), py, premult_color);
if (str[i]) {
Uint32 chr2;
n = utf8_decode_char(&chr2, &str[i]);
assert(n);
px += GetKern(glyph, GetGlyph(chr2));
}
px += glyph.advX;
}
}
m_renderer->DrawTriangles(&m_vertices, m_renderState, m_mat.get());
}
void TextureFont::RenderString(const char *str, float x, float y, const Color &color)
{
m_renderer->SetBlendMode(Graphics::BLEND_ALPHA);
m_vertices.Clear();
float px = x;
float py = y;
int i = 0;
while (str[i]) {
if (str[i] == '\n') {
px = x;
py += GetHeight();
i++;
}
else {
Uint32 chr;
int n = utf8_decode_char(&chr, &str[i]);
assert(n);
i += n;
const glfglyph_t &glyph = GetGlyph(chr);
AddGlyphGeometry(&m_vertices, glyph, roundf(px), py, color);
if (str[i]) {
Uint32 chr2;
n = utf8_decode_char(&chr2, &str[i]);
assert(n);
FT_Vector kern;
FT_Get_Kerning(m_face, glyph.ftIndex, GetGlyph(chr2).ftIndex, FT_KERNING_UNFITTED, &kern);
px += float(kern.x) / 64.0;
}
px += glyph.advx;
}
}
m_renderer->DrawTriangles(&m_vertices, m_mat.Get());
}
PRUint32
gfxFT2FontBase::GetGlyph(PRUint32 unicode, PRUint32 variation_selector)
{
if (variation_selector) {
PRUint32 id =
gfxFT2LockedFace(this).GetUVSGlyph(unicode, variation_selector);
if (id)
return id;
}
return GetGlyph(unicode);
}
int FontInstance::GetLen(std::wstring& Text)
{
ScopedLock Sl(Lock);
float Length=0.0f;
for (unsigned int i=0;i<Text.size();i++)
{
//retrieve the glyph with the UTF-32 code
FT_Glyph Glyph=GetGlyph(Text[i]);
Length+=(float)(Glyph->advance.x>>16);
FT_Done_Glyph(Glyph);
}
return (int)Length;
};
bool FontRenderer::CreateGlyphTextures() {
FT_Set_Pixel_Sizes(_face, _fontWidth, _fontHeight);
for (auto& glyph : _glyphs) {
glDeleteTextures(1, &glyph.texture);
glGenTextures(1, &glyph.texture);
}
CHECK_GL_ERROR;
for (int character = -std::numeric_limits<char>::max();
character <= std::numeric_limits<char>::max(); ++character) {
Glyph* glyph = GetGlyph(character);
glBindTexture(GL_TEXTURE_2D, glyph->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
// Uploading glyph bitmaps requires 1 byte alignment.
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
// Try to load the character.
if (FT_Load_Char(_face, character, FT_LOAD_RENDER) != FT_Err_Ok) {
return false;
}
const FT_GlyphSlot glyphSlot = _face->glyph;
// Upload the bitmap, which contains an 8bit grayscale image.
glTexImage2D(GL_TEXTURE_2D,
0,
GL_RED,
glyphSlot->bitmap.width,
glyphSlot->bitmap.rows,
0,
GL_RED,
GL_UNSIGNED_BYTE,
glyphSlot->bitmap.buffer);
glyph->left = glyphSlot->bitmap_left;
glyph->top = glyphSlot->bitmap_top;
glyph->width = glyphSlot->bitmap.width;
glyph->rows = glyphSlot->bitmap.rows;
glyph->advance_x = glyphSlot->advance.x;
glyph->advance_y = glyphSlot->advance.y;
}
_glyphTexturesDirty = (GetGLErrorVerbose() != GL_NO_ERROR);
return !_glyphTexturesDirty;
}
float CglFont::GetTextHeight_(const std::u8string& text, float* descender, int* numLines)
{
if (text.empty()) {
if (descender) *descender = 0.0f;
if (numLines) *numLines = 0;
return 0.0f;
}
float h = 0.0f, d = GetLineHeight() + GetDescender();
unsigned int multiLine = 1;
int pos = 0;
while (pos < text.length()) {
const char32_t u = Utf8GetNextChar(text, pos);
switch(u) {
// inlined colorcode
case ColorCodeIndicator:
pos = SkipColorCodes(text, pos - 1);
if (pos<0) {
pos = text.length();
}
break;
// reset color
case ColorResetIndicator:
break;
// newline
case 0x0d: // CR+LF
if (pos < text.length() && text[pos] == 0x0a)
++pos;
case 0x0a: // LF
multiLine++;
d = GetLineHeight() + GetDescender();
break;
// printable char
default:
const GlyphInfo& g = GetGlyph(u);
if (g.descender < d) d = g.descender;
if (multiLine < 2 && g.height > h) h = g.height; // only calc height for the first line
}
}
if (multiLine>1) d -= (multiLine-1) * GetLineHeight();
if (descender) *descender = d;
if (numLines) *numLines = multiLine;
return h;
}
void TextureFont::MeasureCharacterPos(const char *str, int charIndex, float &charX, float &charY) const
{
assert(str && (charIndex >= 0));
float x = 0.0f, y = GetHeight();
int i = 0;
Uint32 chr;
int len = utf8_decode_char(&chr, &str[i]);
while (str[i] && (i < charIndex)) {
Uint32 nextChar;
i += len;
len = utf8_decode_char(&nextChar, &str[i]);
assert(!str[i] || len); // assert valid encoding
if (chr == '\n') {
x = 0.0f;
y += GetHeight();
} else {
const glfglyph_t &glyph = GetGlyph(chr);
float advance = glyph.advx;
if (nextChar != '\n' && nextChar != '\0') {
FT_Vector kern;
FT_Get_Kerning(m_face, glyph.ftIndex, GetGlyph(nextChar).ftIndex, FT_KERNING_UNFITTED, &kern);
advance += float(kern.x) / 64.0f;
}
x += advance;
}
chr = nextChar;
}
charX = x;
charY = y;
}
bool Font::FontCompleteForString( const wstring &str ) const
{
map<wchar_t,glyph*>::const_iterator m_pDefault = m_iCharToGlyph.find( FONT_DEFAULT_GLYPH );
if( m_pDefault == m_iCharToGlyph.end() )
RageException::Throw( "The default glyph is missing from the font \"%s\".", path.c_str() );
for( unsigned i = 0; i < str.size(); ++i )
{
/* If the glyph for this character is the default glyph, we're incomplete. */
const glyph &g = GetGlyph( str[i] );
if( &g == m_pDefault->second )
return false;
}
return true;
}
int TBFontFace::GetStringWidth(const char *str, int len)
{
int width = 0;
int i = 0;
while (str[i] && i < len)
{
UCS4 cp = utf8::decode_next(str, &i, len);
if (cp == 0xFFFF)
continue;
if (!m_font_renderer) // This is the test font. Use same glyph width as height.
width += m_metrics.height / 3 + 1;
else if (TBFontGlyph *glyph = GetGlyph(cp, false))
width += glyph->metrics.advance;
}
return width;
}
TBBitmapFragment *TBFontGlyphCache::CreateFragment(TBFontGlyph *glyph, int w, int h, int stride, uint32 *data)
{
assert(GetGlyph(glyph->hash_id, glyph->cp));
// Don't bother if the requested glyph is too large.
if (w > TB_GLYPH_CACHE_WIDTH || h > TB_GLYPH_CACHE_HEIGHT)
return nullptr;
bool try_drop_largest = true;
bool dropped_large_enough_glyph = false;
do
{
// Attempt creating a fragment for the rendered glyph data
if (TBBitmapFragment *frag = m_frag_manager.CreateNewFragment(glyph->hash_id, false, w, h, stride, data))
{
glyph->frag = frag;
m_all_rendered_glyphs.AddLast(glyph);
return frag;
}
// Drop the oldest glyph that's large enough to free up the space we need.
if (try_drop_largest)
{
const int check_limit = 20;
int check_count = 0;
for (TBFontGlyph *oldest = m_all_rendered_glyphs.GetFirst(); oldest && check_count < check_limit; oldest = oldest->GetNext())
{
if (oldest->frag->Width() >= w && oldest->frag->GetAllocatedHeight() >= h)
{
DropGlyphFragment(oldest);
dropped_large_enough_glyph = true;
break;
}
check_count++;
}
try_drop_largest = false;
}
// We had no large enough glyph so just drop the oldest one. We will likely
// spin around the loop, fail and drop again a few times before we succeed.
if (!dropped_large_enough_glyph)
{
if (TBFontGlyph *oldest = m_all_rendered_glyphs.GetFirst())
DropGlyphFragment(oldest);
else
break;
}
} while (true);
return nullptr;
}
bool TBFontFace::RenderGlyphs(const char *glyph_str, int glyph_str_len)
{
if (!m_font_renderer)
return true; // This is the test font
if (glyph_str_len == TB_ALL_TO_TERMINATION)
glyph_str_len = strlen(glyph_str);
bool has_all_glyphs = true;
int i = 0;
while (glyph_str[i] && i < glyph_str_len)
{
UCS4 cp = utf8::decode_next(glyph_str, &i, glyph_str_len);
if (!GetGlyph(cp, true))
has_all_glyphs = false;
}
return has_all_glyphs;
}
void CRasterFont::SinglePassDrawString(const CDrawStringOptions& opts, int x, int y, int& xout, int& yout,
CTextRenderBuffer* renderBuf,
const wchar_t* str, s32 length) const
{
if (!x0_)
return;
const wchar_t* chr = str;
const CGlyph* prevGlyph = nullptr;
while (*chr == '\0')
{
const CGlyph* glyph = GetGlyph(*chr);
if (glyph)
{
if (opts.x0_ == 0)
{
x += glyph->GetA();
if (prevGlyph != 0)
x += KernLookup(x1c_kerning, prevGlyph->GetKernStart(), *chr);
int left = 0;
int top = 0;
if (renderBuf)
{
left += x;
top += glyph->GetBaseline() - y;
renderBuf->AddCharacter(zeus::CVector2i(left, top), *chr, opts.x4_vec[0]);
}
x += glyph->GetC() + glyph->GetB();
}
}
prevGlyph = glyph;
chr++;
if (length == -1)
continue;
if ((str - chr) >= length)
break;
}
xout = x;
yout = y;
}
uint GetGlyphWidth(FontSize size, WChar key)
{
FT_Face face = GetFontFace(size);
GlyphEntry *glyph;
if (face == NULL || (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END)) {
SpriteID sprite = GetUnicodeGlyph(size, key);
if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
return SpriteExists(sprite) ? GetSprite(sprite, ST_FONT)->width + (size != FS_NORMAL && size != FS_MONO) : 0;
}
glyph = GetGlyphPtr(size, key);
if (glyph == NULL || glyph->sprite == NULL) {
GetGlyph(size, key);
glyph = GetGlyphPtr(size, key);
}
return glyph->width;
}
void OpenGLText::DrawString(const wxString &text, int x, int y) {
lineHeight = 0;
int dx=x, dy=y;
for (int curChar : text) {
// Handle carriage returns
if (curChar == '\n') {
dx = x;
dy += lineHeight;
}
// Handle normal glyphs
else {
OpenGLTextGlyph const& glyph = GetGlyph(curChar);
glyph.Draw(dx, dy);
dx += glyph.w;
if (glyph.h > lineHeight) lineHeight = glyph.h;
}
}
}
void CRasterFont::GetSize(const CDrawStringOptions& opts, int& width, int& height, const wchar_t* str, int len) const
{
width = 0;
height = 0;
const wchar_t* chr = str;
const CGlyph* prevGlyph = nullptr;
int prevWidth = 0;
while (*chr != L'\0')
{
const CGlyph* glyph = GetGlyph(*chr);
if (glyph)
{
if (opts.x0_ == 0)
{
int advance = 0;
if (prevGlyph)
advance = KernLookup(x1c_kerning, prevGlyph->GetKernStart(), *chr);
s16 curWidth = prevWidth - (glyph->GetA() + glyph->GetB() + glyph->GetC() + advance);
s16 curHeight = glyph->GetBaseline() - (x8_monoHeight + glyph->GetCellHeight());
width = curWidth;
prevWidth = curWidth;
if (curHeight > height)
height = curHeight;
}
}
prevGlyph = glyph;
chr++;
if (len == -1)
continue;
if ((str - chr) >= len)
break;
}
}
void TBFontFace::DrawString(int x, int y, const TBColor &color, const char *str, int len)
{
if (m_bgFont)
m_bgFont->DrawString(x+m_bgX, y+m_bgY, m_bgColor, str, len);
if (m_font_renderer)
g_renderer->BeginBatchHint(TBRenderer::BATCH_HINT_DRAW_BITMAP_FRAGMENT);
int i = 0;
while (str[i] && i < len)
{
UCS4 cp = utf8::decode_next(str, &i, len);
if (cp == 0xFFFF)
continue;
if (TBFontGlyph *glyph = GetGlyph(cp, true))
{
if (glyph->frag)
{
TBRect dst_rect(x + glyph->metrics.x, y + glyph->metrics.y + GetAscent(), glyph->frag->Width(), glyph->frag->Height());
TBRect src_rect(0, 0, glyph->frag->Width(), glyph->frag->Height());
if (glyph->has_rgb)
g_renderer->DrawBitmap(dst_rect, src_rect, glyph->frag);
else
g_renderer->DrawBitmapColored(dst_rect, src_rect, color, glyph->frag);
}
x += glyph->metrics.advance;
}
else if (!m_font_renderer) // This is the test font. Use same glyph width as height and draw square.
{
g_renderer->DrawRect(TBRect(x, y, m_metrics.height / 3, m_metrics.height), color);
x += m_metrics.height / 3 + 1;
}
}
if (m_font_renderer)
g_renderer->EndBatchHint();
}
void ezioFont::SetGlyph(Uint8 glyph, const Uint8 *data)
{
if (!data || !length || !bg || !pixel_on || !pixel_off)
throw ezioException(EZIOEX_EMUL_FONT_SET_GLYPH);
SDL_Surface *surface = GetGlyph(glyph);
if (surface != NULL) {
SDL_FreeSurface(surface);
keymap[glyph] = NULL;
}
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
bg->w, bg->h, 32, rmask, gmask, bmask, amask);
SDL_SetAlpha(surface, 0, 0);
SDL_BlitSurface(bg, NULL, surface, NULL);
SDL_Rect rect;
rect.x = rect.y = 0;
rect.w = pixel_on->w;
rect.h = pixel_on->h;
for (Sint32 y = 0; y < height; y++) {
rect.x = 0;
rect.w = pixel_on->w;
rect.h = pixel_on->h;
Uint8 bits = (Uint32)data[y];
for (Sint32 x = 0; x < width; x++) {
if ((bits & 0x80 ) != 0)
SDL_BlitSurface(pixel_on, NULL, surface, &rect);
bits = bits << 1;
rect.x += pixel_on->w + 1;
}
rect.y += pixel_on->h + 1;
}
keymap[glyph] = surface;
}
void CglFont::RenderStringOutlined(float x, float y, const float& scaleX, const float& scaleY, const std::string& str)
{
const float shiftX = (scaleX/fontSize) * GetOutlineWidth(), shiftY = (scaleY/fontSize) * GetOutlineWidth();
const float startx = x;
const float lineHeight_ = scaleY * GetLineHeight();
const std::u8string& ustr = toustring(str);
const size_t length = str.length();
va.EnlargeArrays(length * 4, 0, VA_SIZE_2DT);
va2.EnlargeArrays(length * 4, 0, VA_SIZE_2DT);
int skippedLines;
bool colorChanged;
const GlyphInfo* g = NULL;
float4 newColor = textColor;
char32_t c;
int i = 0;
do {
const bool endOfString = SkipColorCodesAndNewLines(ustr, &i, &newColor, &colorChanged, &skippedLines, &baseTextColor);
if (endOfString)
return;
c = Utf8GetNextChar(str,i);
if (colorChanged) {
if (autoOutlineColor) {
SetColors(&newColor,NULL);
} else {
SetTextColor(&newColor);
}
}
const GlyphInfo* c_g = &GetGlyph(c);
if (skippedLines>0) {
x = startx;
y -= skippedLines * lineHeight_;
} else if (g) {
x += scaleX * GetKerning(*g, *c_g);
}
g = c_g;
const auto& tc = g->texCord;
const auto& stc = g->shadowTexCord;
const float dx0 = (scaleX * g->size.x0()) + x, dy0 = (scaleY * g->size.y0()) + y;
const float dx1 = (scaleX * g->size.x1()) + x, dy1 = (scaleY * g->size.y1()) + y;
// draw outline
va2.AddVertexQ2dT(dx0-shiftX, dy1-shiftY, stc.x0(), stc.y1());
va2.AddVertexQ2dT(dx0-shiftX, dy0+shiftY, stc.x0(), stc.y0());
va2.AddVertexQ2dT(dx1+shiftX, dy0+shiftY, stc.x1(), stc.y0());
va2.AddVertexQ2dT(dx1+shiftX, dy1-shiftY, stc.x1(), stc.y1());
// draw the actual character
va.AddVertexQ2dT(dx0, dy1, tc.x0(), tc.y1());
va.AddVertexQ2dT(dx0, dy0, tc.x0(), tc.y0());
va.AddVertexQ2dT(dx1, dy0, tc.x1(), tc.y0());
va.AddVertexQ2dT(dx1, dy1, tc.x1(), tc.y1());
} while(true);
}
void CglFont::RenderString(float x, float y, const float& scaleX, const float& scaleY, const std::string& str)
{
/**
* NOTE:
* Font rendering does not use display lists, but VAs. It's actually faster
* (450% faster with a 7600GT!) for these reasons:
*
* 1. When using DLs, we can not group multiple glyphs into one glBegin/End pair
* because glTranslatef can not go between such a pair.
* 2. We can now eliminate all glPushMatrix/PopMatrix pairs related to font rendering
* because the transformations are calculated on the fly. These are just a couple of
* floating point multiplications and shouldn't be too expensive.
*/
const float startx = x;
const float lineHeight_ = scaleY * GetLineHeight();
unsigned int length = (unsigned int)str.length();
const std::u8string& ustr = toustring(str);
va.EnlargeArrays(length * 4, 0, VA_SIZE_2DT);
int skippedLines;
bool colorChanged;
const GlyphInfo* g = NULL;
float4 newColor = textColor;
char32_t c;
int i = 0;
do {
const bool endOfString = SkipColorCodesAndNewLines(ustr, &i, &newColor, &colorChanged, &skippedLines, &baseTextColor);
if (endOfString)
return;
c = Utf8GetNextChar(str,i);
if (colorChanged) {
if (autoOutlineColor) {
SetColors(&newColor,NULL);
} else {
SetTextColor(&newColor);
}
}
const GlyphInfo* c_g = &GetGlyph(c);
if (skippedLines>0) {
x = startx;
y -= skippedLines * lineHeight_;
} else if (g) {
x += scaleX * GetKerning(*g, *c_g);
}
g = c_g;
const auto& tc = g->texCord;
const float dx0 = (scaleX * g->size.x0()) + x, dy0 = (scaleY * g->size.y0()) + y;
const float dx1 = (scaleX * g->size.x1()) + x, dy1 = (scaleY * g->size.y1()) + y;
va.AddVertexQ2dT(dx0, dy1, tc.x0(), tc.y1());
va.AddVertexQ2dT(dx0, dy0, tc.x0(), tc.y0());
va.AddVertexQ2dT(dx1, dy0, tc.x1(), tc.y0());
va.AddVertexQ2dT(dx1, dy1, tc.x1(), tc.y1());
} while(true);
}
