CRasterFont::CRasterFont(urde::CInputStream& in, urde::IObjectStore& store)
{
u32 magic;
in.readBytesToBuf(&magic, 4);
if (magic != SBIG('FONT'))
return;
u32 version = in.readUint32Big();
x4_monoWidth = in.readUint32Big();
x8_monoHeight = in.readUint32Big();
if (version >= 1)
x8c_baseline = in.readUint32Big();
else
x8c_baseline = x8_monoHeight;
if (version >= 2)
x90_lineMargin = in.readUint32Big();
bool tmp1 = in.readBool();
bool tmp2 = in.readBool();
u32 tmp3 = in.readUint32Big();
u32 tmp4 = in.readUint32Big();
std::string name= in.readString();
u32 txtrId = in.readUint32Big();
x30_fontInfo = CFontInfo(tmp1, tmp2, tmp3, tmp4, name.c_str());
x80_texture = store.GetObj({'TXTR', txtrId});
EColorType mode = EColorType(in.readUint32Big());
/* TODO: Make an enum */
if (mode == EColorType::One)
x2c_mode = EColorType::One;
else if (mode == EColorType::Zero)
x2c_mode = EColorType::Zero;
u32 glyphCount = in.readUint32Big();
xc_glyphs.reserve(glyphCount);
for (u32 i = 0 ; i < glyphCount ; ++i)
{
wchar_t chr = in.readUint16Big();
float startU = in.readFloatBig();
float startV = in.readFloatBig();
float endU = in.readFloatBig();
float endV = in.readFloatBig();
s32 a = in.readInt32Big();
s32 b = in.readInt32Big();
s32 c = in.readInt32Big();
s32 cellWidth = in.readInt32Big();
s32 cellHeight = in.readInt32Big();
s32 baseline = in.readInt32Big();
s32 kernStart = in.readInt32Big();
xc_glyphs[i] = std::make_pair(chr, CGlyph(a, b, c, startU, startV, endU, endV,
cellWidth, cellHeight, baseline, kernStart));
}
std::sort(xc_glyphs.begin(), xc_glyphs.end(), [=](auto& a, auto& b) -> bool{
return a.first < b.first;
});
u32 kernCount = in.readUint32Big();
x1c_kerning.reserve(kernCount);
for (u32 i = 0 ; i < kernCount ; ++i)
{
wchar_t first = in.readUint16Big();
wchar_t second = in.readUint16Big();
s32 howMuch = in.readUint32Big();
x1c_kerning[i] = CKernPair(first, second, howMuch);
}
}
CTextRenderer::CGlyph* CTextRenderer::CGlyphCache::NewGlyph(CGlyphId GlyphId, int Width, int Height)
{
ivec2 Granularity;
Granularity.x = (Width%m_PPG == 0 ? (Width / m_PPG) : (Width / m_PPG) + 1);
Granularity.y = (Height%m_PPG == 0 ? (Height / m_PPG) : (Height / m_PPG) + 1);
if(Granularity.x < 1)
Granularity.x = 1;
if(Granularity.y < 1)
Granularity.y = 1;
//First pass: find a free slot in blocks
//We use backward iteration because non-full blockes are at the end
for(int i=m_Blocks.size()-1; i>=0; i--)
{
if(m_Blocks[i].m_Granularity == Granularity)
{
if(!m_Blocks[i].IsFull())
{
CGlyph* pGlyph = &m_Glyphs[m_Glyphs.add(CGlyph(GlyphId))];
pGlyph->m_Width = Width;
pGlyph->m_Height = Height;
pGlyph->m_Granularity = Granularity;
pGlyph->m_Block = i;
pGlyph->m_BlockPos = m_Blocks[i].m_Size;
UpdateGlyph(pGlyph);
m_Blocks[pGlyph->m_Block].m_Size++;
return pGlyph;
}
else
break; //Only the last block of this granularity can be non-full
}
}
//Second pass: find the oldest glyph with the same granularity
int OldestTick = m_RenderTick;
int OldestGlyph = -1;
for(int i=0; i<m_Glyphs.size(); i++)
{
if(m_Glyphs[i].m_Granularity == Granularity && m_Glyphs[i].m_RenderTick < OldestTick)
{
OldestTick = m_Glyphs[i].m_RenderTick;
OldestGlyph = i;
}
}
if(OldestGlyph >= 0) //Replace the glyph
{
CGlyph Glyph = CGlyph(GlyphId);
Glyph.m_Block = m_Glyphs[OldestGlyph].m_Block;
Glyph.m_BlockPos = m_Glyphs[OldestGlyph].m_BlockPos;
m_Glyphs.remove_index(OldestGlyph);
int GlyphId = m_Glyphs.add(Glyph);
CGlyph* pGlyph = &m_Glyphs[GlyphId];
pGlyph->m_Width = Width;
pGlyph->m_Height = Height;
pGlyph->m_Granularity = Granularity;
UpdateGlyph(pGlyph);
UpdateVersion();
return pGlyph;
}
else //Add a new block
{
int BlockId = NewBlock(Granularity);
CGlyph* pGlyph = &m_Glyphs[m_Glyphs.add(CGlyph(GlyphId))];
pGlyph->m_Width = Width;
pGlyph->m_Height = Height;
pGlyph->m_Granularity = Granularity;
pGlyph->m_Block = BlockId;
pGlyph->m_BlockPos = 0;
UpdateGlyph(pGlyph);
m_Blocks[pGlyph->m_Block].m_Size++;
return pGlyph;
}
}
