feat: font

freetype-harfbuzz/CMakeLists.txt

@@ -79,3 +79,6 @@ target_compile_options(clfontft2 PUBLIC
     ${PNG_CFLAGS_OTHER}
     ${FREETYPE_CFLAGS_OTHER}
     ${SDL2_CFLAGS_OTHER})
+
+add_executable (stt stt.c)
+target_link_libraries (stt PRIVATE m)

freetype-harfbuzz/stt.c

@@ -0,0 +1,48 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate
+                                    // implementation
+#include "stb_truetype.h"
+
+int main(int argc, char **argv) {
+  uint8_t *bitmap;
+
+  if (argc < 2) {
+    printf("stt <font> [char] [height]\n");
+    return 0;
+  }
+
+  int w, h, i, j, c = (argc > 2 ? atoi(argv[2]) : 'a'),
+                  s = (argc > 3 ? atoi(argv[3]) : 20);
+
+  long size;
+  uint8_t *font_buffer;
+
+  FILE *font_file = fopen(argv[1], "rb");
+  fseek(font_file, 0, SEEK_END);
+  size = ftell(font_file);       /* how long is the file ? */
+  fseek(font_file, 0, SEEK_SET); /* reset */
+
+  font_buffer = (uint8_t *)malloc(size);
+
+  fread(font_buffer, size, 1, font_file);
+  fclose(font_file);
+
+  stbtt_fontinfo info;
+  if (!stbtt_InitFont(&info, font_buffer, 0)) {
+    printf("failed\n");
+  }
+  bitmap = stbtt_GetCodepointBitmap(
+      &info, 0, stbtt_ScaleForPixelHeight(&info, s), c, &w, &h, 0, 0);
+
+  for (j = 0; j < h; ++j) {
+    for (i = 0; i < w; ++i)
+      putchar(" .:ioVM@"[bitmap[j * w + i] >> 5]);
+    putchar('\n');
+  }
+
+  free(font_buffer);
+  return 0;
+}

sww/test/font.c

@@ -3,6 +3,8 @@
 #include <stdlib.h> /**< rand */
 
 #include "sww/app.h"
+#include "sww/fps_helper.h"
+#include "sww/rate_helper.h"
 #include "sww/renderer.h"
 #include "sww/texture.h"
 #include "sww/util.h"
@@ -109,11 +111,14 @@ float Sample(float x, float y, int method) {
 }
 
 int main(int argc, char *argv[]) {
-  if (argc < 1) {
-    printf("[I] Please provide a font file path!");
+  if (argc < 2) {
+    printf("[I] Please provide a font file path!\n");
     return 0;
   }
 
+  swwFpsHelper fps;
+  swwRateHelper rh;
+
   swwWindowCallback callback = {OnKey, OnButton, OnScroll};
   swwApp_Initialize();
 
@@ -209,14 +214,23 @@ int main(int argc, char *argv[]) {
 
   free(font_buffer);
   free(bitmap);
-  swwRenderer_ClearBlack(ud.renderer);
 
+  swwRenderer_EnablePerfMonitor(ud.renderer, 1);
+  swwFpsHelper_Construct(&fps, 1.f);
+  swwRateHelper_Construct(&rh, 30.f);
   while (!swwApp_ShouldExit()) {
-    swwRenderer_DrawTexture(ud.renderer, tex, (Point2i){0, 0});
-    swwRenderer_DrawRectangleTopLeft(ud.renderer, (Point2i){0, 0},
+    swwRenderer_ClearBlack(ud.renderer);
+    swwRenderer_DrawTexture(ud.renderer, tex, (Point2i){0, 128});
+    swwRenderer_DrawRectangleTopLeft(ud.renderer, (Point2i){0, 128},
                                      (Sizei){512, 128}, kRed, 0);
     swwRenderer_Present(ud.renderer);
     swwApp_PollEvent();
+    swwRateHelper_Sleep(&rh);
+
+    if (swwFpsHelper_Update(&fps, ud.renderer)) {
+      printf("FPS: %s    \r", swwFpsHelper_Get(&fps));
+      fflush(stdout);
+    }
   }
 
   swwTexture_Destroy(tex);

sww/test/texture.c

@@ -11,9 +11,6 @@
 #include "sww/util.h"
 #include "sww/window.h"
 
-#define W 500
-#define H 500
-
 typedef struct {
   int w;
   int h;
@@ -60,13 +57,14 @@ typedef struct {
 } EyeGround;
 
 int main() {
-  int w, h;
+  const uint32_t win_w = 512, win_h = 512;
+  uint32_t w, h;
   int cw, ch;
   swwWindowCallback callback = {OnKey, OnButton, OnScroll};
   swwFpsHelper fps;
   swwApp_Initialize();
 
-  swwWindow *window = swwWindow_Create("SWW Texture", 500, 500);
+  swwWindow *window = swwWindow_Create("SWW Texture", win_w, win_h);
   swwWindow_GetSize(window, &w, &h);
   UserData ud = {w, h, 1, NULL};
   ud.renderer = swwRenderer_CreateAttachWindow(window, kSoftwareRenderer);
@@ -74,8 +72,8 @@ int main() {
 
   swwWindow_SetCallback(window, &callback);
 
-  int ww2 = (w - W) / 2;
-  int hh2 = (h - H) / 2;
+  int ww2 = (w - win_w) / 2;
+  int hh2 = (h - win_h) / 2;
 
   int i = 0;