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dynamic rendering of utf8 characters such as umlauts by using ttf (wip)

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git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@4769 e016b1c5-ed68-44aa-a2f7-31cac88cffde
This commit is contained in:
driAn
2010-01-14 22:19:27 +00:00
parent 2a27edf8a3
commit e232a3f3ac
9 changed files with 556 additions and 39 deletions
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source/src/texture.cpp
+53
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@@ -348,6 +348,34 @@ Texture *textureload(const char *name, int clamp, bool mipmap, bool canreduce)
return t;
}
Texture *createtexturefromsurface(const char *name, SDL_Surface *s)
{
string pname;
copystring(pname, name);
path(pname);
Texture *t = textures.access(pname);
if(!t)
{
char *key = newstring(pname);
t = &textures[key];
t->name = key;
}
GLuint tnum;
glGenTextures(1, &tnum);
GLenum format = texformat(s->format->BitsPerPixel);
createtexture(tnum, s->w, s->h, s->pixels, 0, true, false, format);
t->xs = s->w;
t->ys = s->h;
t->bpp = s->format->BitsPerPixel;
t->clamp = 0;
t->mipmap = true;
t->canreduce = false;
t->id = tnum;
return t;
}
struct Slot
{
string name;
@@ -665,3 +693,28 @@ void cleanuptmus()
loopi(MAXTMUS) tmus[i] = invalidtmu;
}
// only works on 32 bit surfaces with alpha in 4th byte!
void blitsurface(SDL_Surface *dst, SDL_Surface *src, int x, int y)
{
uchar *dstp = (uchar *)dst->pixels + y*dst->pitch + x*4,
*srcp = (uchar *)src->pixels;
int dstpitch = dst->pitch - 4*src->w,
srcpitch = src->pitch - 4*src->w;
loop(dy, src->h)
{
loop(dx, src->w)
{
uint k1 = (255U - srcp[3]) * dstp[3], k2 = srcp[3] * 255U, kmax = max(dstp[3], srcp[3]), kscale = max(kmax * 255U, 1U);
dstp[0] = (dstp[0]*k1 + srcp[0]*k2) / kscale;
dstp[1] = (dstp[1]*k1 + srcp[1]*k2) / kscale;
dstp[2] = (dstp[2]*k1 + srcp[2]*k2) / kscale;
dstp[3] = kmax;
dstp += 4;
srcp += 4;
}
dstp += dstpitch;
srcp += srcpitch;
}
}