stbtt_Pack* documentation
oversample test tweaks
This commit is contained in:
Sean Barrett
@ -2,11 +2,8 @@
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#include <assert.h>
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#include <ctype.h>
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#define STB_DEFINE
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#define STB_WINMAIN
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#define STB_NO_REGISTRY
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#include "stb_wingraph.h"
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#include "stb.h"
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#define STB_TRUETYPE_IMPLEMENTATION
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#define STB_RECT_PACK_IMPLEMENTATION
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@ -22,11 +19,12 @@
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#include <gl/gl.h>
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#include <gl/glu.h>
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#define GL_FRAMEBUFFER_SRGB_EXT 0x8DB9
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#define SIZE_X 1024
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#define SIZE_Y 768
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stbtt_packedchar chardata[3][128];
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stbtt_packedchar chardata[6][128];
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int sx=SIZE_X, sy=SIZE_Y;
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@ -36,19 +34,40 @@ unsigned char temp_bitmap[BITMAP_W][BITMAP_H];
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unsigned char ttf_buffer[1 << 25];
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GLuint font_tex;
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float scale[2] = { 24.0f, 14.0f };
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int sf[6] = { 0,1,2, 0,1,2 };
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void load_fonts(void)
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{
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stbtt_pack_context pc;
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FILE *f = fopen("c:/windows/fonts/times.ttf", "rb");
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if (!f) exit(0);
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int i;
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FILE *f;
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char filename[256];
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char *win = getenv("windir");
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if (win == NULL) win = getenv("SystemRoot");
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f = fopen(stb_wingraph_commandline, "rb");
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if (!f) {
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if (win == NULL)
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sprintf(filename, "arial.ttf", win);
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else
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sprintf(filename, "%s/fonts/arial.ttf", win);
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f = fopen(filename, "rb");
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if (!f) exit(0);
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}
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fread(ttf_buffer, 1, 1<<25, f);
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stbtt_PackBegin(&pc, temp_bitmap[0], BITMAP_W, BITMAP_H, 0, 1, NULL);
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stbtt_PackFontRange(&pc, ttf_buffer, 0, 24.0, 32, 95, chardata[0]+32);
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stbtt_PackSetOversampling(&pc, 2, 2);
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stbtt_PackFontRange(&pc, ttf_buffer, 0, 24.0, 32, 95, chardata[1]+32);
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stbtt_PackSetOversampling(&pc, 3, 1);
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stbtt_PackFontRange(&pc, ttf_buffer, 0, 24.0, 32, 95, chardata[2]+32);
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for (i=0; i < 2; ++i) {
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stbtt_PackSetOversampling(&pc, 1, 1);
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stbtt_PackFontRange(&pc, ttf_buffer, 0, scale[i], 32, 95, chardata[i*3+0]+32);
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stbtt_PackSetOversampling(&pc, 2, 2);
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stbtt_PackFontRange(&pc, ttf_buffer, 0, scale[i], 32, 95, chardata[i*3+1]+32);
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stbtt_PackSetOversampling(&pc, 3, 1);
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stbtt_PackFontRange(&pc, ttf_buffer, 0, scale[i], 32, 95, chardata[i*3+2]+32);
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}
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stbtt_PackEnd(&pc);
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glGenTextures(1, &font_tex);
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@ -58,6 +77,8 @@ void load_fonts(void)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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}
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int black_on_white;
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void draw_init(void)
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{
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glDisable(GL_CULL_FACE);
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@ -66,7 +87,10 @@ void draw_init(void)
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glDisable(GL_DEPTH_TEST);
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glViewport(0,0,sx,sy);
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glClearColor(0,0,0,0);
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if (black_on_white)
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glClearColor(255,255,255,0);
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else
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glClearColor(0,0,0,0);
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glClear(GL_COLOR_BUFFER_BIT);
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glMatrixMode(GL_PROJECTION);
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@ -100,41 +124,64 @@ void print(float x, float y, int font, char *text)
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glEnd();
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}
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int font=0;
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int font=3;
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int translating;
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int rotating=0;
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int srgb=0;
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float rotate_t, translate_t;
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int show_tex;
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void draw_world(void)
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{
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int sfont = sf[font];
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float x = 20;
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glColor3f(1,1,1);
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if (font==1)
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print(100, 50, font, "2x2 oversampled text at 1:1");
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else if (font == 2)
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print(100, 50, font, "3x1 oversampled text at 1:1");
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else if (integer_align)
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print(100, 50, font, "1:1 text, one texel = one pixel, snapped to integer coordinates");
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if (black_on_white)
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glColor3f(0,0,0);
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else
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print(100, 50, font, "1:1 text, one texel = one pixel");
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glColor3f(1,1,1);
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print(100, 80, font, "O: toggle oversampling");
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print(100,105, font, "T: toggle translation");
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print(100,130, font, "R: toggle rotation");
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print(100,155, font, "P: toggle pixel-snap (only non-oversampled)");
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print(100,180, font, "V: view font texture");
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print(80, 30, sfont, "Controls:");
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print(100, 60, sfont, "S: toggle font size");
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print(100, 85, sfont, "O: toggle oversampling");
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print(100,110, sfont, "T: toggle translation");
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print(100,135, sfont, "R: toggle rotation");
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print(100,160, sfont, "P: toggle pixel-snap (only non-oversampled)");
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print(100,185, sfont, "G: toggle srgb gamma-correction");
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if (black_on_white)
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print(100,210, sfont, "B: toggle to white-on-black");
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else
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print(100,210, sfont, "B: toggle to black-on-white");
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print(100,235, sfont, "V: view font texture");
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print(80, 300, sfont, "Current font:");
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if (!show_tex) {
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if (font < 3)
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print(100, 350, sfont, "Font height: 24 pixels");
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else
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print(100, 350, sfont, "Font height: 14 pixels");
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}
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if (font%3==1)
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print(100, 325, sfont, "2x2 oversampled text at 1:1");
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else if (font%3 == 2)
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print(100, 325, sfont, "3x1 oversampled text at 1:1");
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else if (integer_align)
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print(100, 325, sfont, "1:1 text, one texel = one pixel, snapped to integer coordinates");
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else
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print(100, 325, sfont, "1:1 text, one texel = one pixel");
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if (show_tex) {
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glBegin(GL_QUADS);
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drawBoxTC(200,200, 200+BITMAP_W,200+BITMAP_H, 0,0,1,1);
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drawBoxTC(200,400, 200+BITMAP_W,300+BITMAP_H, 0,0,1,1);
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glEnd();
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} else {
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glMatrixMode(GL_MODELVIEW);
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glTranslatef(200,250,0);
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glTranslatef(200,350,0);
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if (translating)
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x += fmod(translate_t*8,30);
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@ -198,7 +245,10 @@ int winproc(void *data, stbwingraph_event *e)
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return STBWINGRAPH_winproc_exit;
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break;
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case 'o': case 'O':
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font = (font+1) % 3;
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font = (font+1) % 3 + (font/3)*3;
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break;
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case 's': case 'S':
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font = (font+3) % 6;
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break;
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case 't': case 'T':
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translating = !translating;
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@ -211,9 +261,19 @@ int winproc(void *data, stbwingraph_event *e)
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case 'p': case 'P':
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integer_align = !integer_align;
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break;
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case 'g': case 'G':
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srgb = !srgb;
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if (srgb)
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glEnable(GL_FRAMEBUFFER_SRGB_EXT);
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else
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glDisable(GL_FRAMEBUFFER_SRGB_EXT);
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break;
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case 'v': case 'V':
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show_tex = !show_tex;
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break;
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case 'b': case 'B':
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black_on_white = !black_on_white;
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break;
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}
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break;
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BIN
tests/oversample/oversample.exe
Normal file
BIN
tests/oversample/oversample.exe
Normal file
Binary file not shown.
@ -791,6 +791,8 @@ void stbwingraph_SwapBuffers(void *win)
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#ifdef STB_WINMAIN
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void stbwingraph_main(void);
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char *stb_wingraph_commandline;
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int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
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{
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{
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@ -808,6 +810,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
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else if (strstr(buffer, " -full ") || strstr(buffer, " -fullscreen "))
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stbwingraph_request_fullscreen = TRUE;
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}
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stb_wingraph_commandline = lpCmdLine;
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stbwingraph_DefineClass(hInstance, "appicon");
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stbwingraph_main();
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