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add a glyph upload for custom textures

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This commit is contained in:
Jupeyy 2017-09-12 20:10:27 +02:00
parent bcb5f0ca8d
commit 6a7e3d5836
1 changed files with 73 additions and 0 deletions
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73
src/engine/client/text.cpp
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@ -745,6 +745,79 @@ public:
pCursor->m_Y = DrawY;
}
virtual void UploadText(int TextureID, const char *pText, int Length, float x, float y, float Size)
{
CFont *pFont = m_pDefaultFont;
FT_Bitmap *pBitmap;
if(!pFont)
return;
// set length
if(Length < 0)
Length = str_length(pText);
const char *pCurrent = (char *)pText;
const char *pEnd = pCurrent+Length;
int ChrCount = 0;
int WidthLastChars = 0;
while(pCurrent < pEnd)
{
int NewLine = 0;
const char *pBatchEnd = pEnd;
const char *pTmp = pCurrent;
int NextCharacter = str_utf8_decode(&pTmp);
if(NextCharacter){
int SlotID = 0;
int SlotW = Size;
int SlotH = Size;
int SlotSize = SlotW*SlotH;
int xt = 1;
int yt = 1;
unsigned int px, py;
FT_Set_Pixel_Sizes(pFont->m_FtFace, 0, Size);
if(FT_Load_Char(pFont->m_FtFace, NextCharacter, FT_LOAD_RENDER|FT_LOAD_NO_BITMAP))
{
dbg_msg("pFont", "error loading glyph %d", NextCharacter);
pCurrent = pTmp;
continue;
}
pBitmap = &pFont->m_FtFace->glyph->bitmap; // ignore_convention
// prepare glyph data
mem_zero(ms_aGlyphData, SlotSize);
if(pBitmap->pixel_mode == FT_PIXEL_MODE_GRAY) // ignore_convention
{
for(py = 0; py < (unsigned)pBitmap->rows; py++) // ignore_convention
for(px = 0; px < (unsigned)pBitmap->width; px++) // ignore_convention
ms_aGlyphData[(py+yt)*SlotW+px+xt] = pBitmap->buffer[py*pBitmap->pitch+px]; // ignore_convention
}
else if(pBitmap->pixel_mode == FT_PIXEL_MODE_MONO) // ignore_convention
{
for(py = 0; py < (unsigned)pBitmap->rows; py++) // ignore_convention
for(px = 0; px < (unsigned)pBitmap->width; px++) // ignore_convention
{
if(pBitmap->buffer[py*pBitmap->pitch+px/8]&(1<<(7-(px%8)))) // ignore_convention
ms_aGlyphData[(py+yt)*SlotW+px+xt] = 255;
}
}
Graphics()->LoadTextureRawSub(TextureID, x + WidthLastChars, y, Size, Size, CImageInfo::FORMAT_ALPHA, ms_aGlyphData);
WidthLastChars += (pBitmap->width + 1);
}
++ChrCount;
pCurrent = pTmp;
}
}
};
IEngineTextRender *CreateEngineTextRender() { return new CTextRender; }