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Code Issues Releases Wiki Activity

improved glfont rendering

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This commit is contained in:
Zeno Rogue 2021-03-07 21:11:42 +01:00
parent ec2dedf678
commit 0ceddf03a0
1 changed files with 34 additions and 23 deletions
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55
basegraph.cpp
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@ -400,16 +400,22 @@ EX int next_p2 (int a ) {
#define CHARS (128+NUMEXTRA)
#if HDR
struct charinfo_t {
int w, h;
float tx0, ty0, tx1, ty1;
};
struct glfont_t {
GLuint texture; // Holds The Texture Id
//GLuint list_base; // Holds The First Display List ID
int widths[CHARS];
int heights[CHARS];
float tx0[CHARS], tx1[CHARS], ty0[CHARS], ty1[CHARS];
vector<charinfo_t> chars;
};
const int max_glfont_size = 72;
glfont_t *glfont[max_glfont_size+1];
#endif
EX glfont_t *glfont[max_glfont_size+1];
typedef Uint16 texturepixel;
@ -443,17 +449,19 @@ void sdltogl(SDL_Surface *txt, glfont_t& f, int ch) {
#endif
}
f.widths[ch] = otwidth;
f.heights[ch] = otheight;
auto& c = f.chars[ch];
f.tx0[ch] = (float) curx / (float) FONTTEXTURESIZE;
f.tx1[ch] = (float) (curx+otwidth) / (float) FONTTEXTURESIZE;
f.ty0[ch] = (float) cury;
f.ty1[ch] = (float) (cury+otheight);
c.w = otwidth;
c.h = otheight;
c.tx0 = (float) curx / (float) FONTTEXTURESIZE;
c.tx1 = (float) (curx+otwidth) / (float) FONTTEXTURESIZE;
c.ty0 = (float) cury;
c.ty1 = (float) (cury+otheight);
curx += otwidth;
}
void init_glfont(int size) {
EX void init_glfont(int size) {
if(glfont[size]) return;
DEBBI(DF_GRAPH, ("init GL font: ", size));
@ -466,6 +474,8 @@ void init_glfont(int size) {
glfont_t& f(*(glfont[size]));
f.chars.resize(CHARS);
//f.list_base = glGenLists(128);
glGenTextures(1, &f.texture );
@ -521,7 +531,7 @@ void init_glfont(int size) {
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE,
fontdata);
for(int ch=0; ch<CHARS; ch++) f.ty0[ch] /= theight, f.ty1[ch] /= theight;
for(int ch=0; ch<CHARS; ch++) f.chars[ch].ty0 /= theight, f.chars[ch].ty1 /= theight;
#if CAP_CREATEFONT
printf("#define NUMEXTRA %d\n", NUMEXTRA);
@ -549,7 +559,7 @@ int gl_width(int size, const char *s) {
int x = 0;
for(int i=0; s[i];) {
int tabid = getnext(s,i);
x += f.widths[tabid] * size/gsiz;
x += f.chars[tabid].w * size/gsiz;
}
return x;
@ -582,12 +592,12 @@ bool gl_print(int x, int y, int shift, int size, const char *s, color_t color, i
int tsize = 0;
for(int i=0; s[i];) {
tsize += f.widths[getnext(s,i)] * size/gsiz;
tsize += f.chars[getnext(s,i)].w * size/gsiz;
}
x -= tsize * align / 16;
y += f.heights[32] * size / (gsiz*2);
y += f.chars[32].h * size / (gsiz*2);
int ysiz = f.heights[32] * size / gsiz;
int ysiz = f.chars[32].h * size / gsiz;
bool clicked = (mousex >= x && mousey <= y && mousex <= x+tsize && mousey >= y-ysiz);
@ -607,15 +617,16 @@ bool gl_print(int x, int y, int shift, int size, const char *s, color_t color, i
for(int i=0; s[i];) {
int tabid = getnext(s,i);
int wi = f.widths[tabid] * size/gsiz;
int hi = f.heights[tabid] * size/gsiz;
auto& c = f.chars[tabid];
int wi = c.w * size/gsiz;
int hi = c.h * size/gsiz;
GLERR("pre-print");
glhr::textured_vertex t00 = charvertex(x, y-hi, f.tx0[tabid], f.ty0[tabid]);
glhr::textured_vertex t01 = charvertex(x, y, f.tx0[tabid], f.ty1[tabid]);
glhr::textured_vertex t11 = charvertex(x+wi, y, f.tx1[tabid], f.ty1[tabid]);
glhr::textured_vertex t10 = charvertex(x+wi, y-hi, f.tx1[tabid], f.ty0[tabid]);
glhr::textured_vertex t00 = charvertex(x, y-hi, c.tx0, c.ty0);
glhr::textured_vertex t01 = charvertex(x, y, c.tx0, c.ty1);
glhr::textured_vertex t11 = charvertex(x+wi, y, c.tx1, c.ty1);
glhr::textured_vertex t10 = charvertex(x+wi, y-hi, c.tx1, c.ty0);
tver.push_back(t00);
tver.push_back(t01);