Texture resizing

CMakeLists.txt

@@ -130,7 +130,7 @@ elseif(TARGET_TYPE STREQUAL game)
       GAME_VERSION=1.0
     )
     tool_texture(test_texture
-      poker/characters/penny/sprites/sheet.png out/test.texture
+      poker/characters/penny/sprites/sheet.png out/penny
     )
     tool_assets(
       test_texture

src/game/sandbox/game.c

@@ -22,7 +22,7 @@ bool sandboxGameInit(sandboxgame_t *game) {
   assetManagerStart(&game->manager);
 
   pixel_t *data = (pixel_t *)assetRawLoad("out/test.texture");
-  textureInit(&game->texture, 4360, 1920, (pixel_t *)data);
+  textureInit(&game->texture, 4360/2, 1920/2, (pixel_t *)data);
   free(data);
 
   return true;

tools/display/texture_generation.c

@@ -7,11 +7,17 @@
 
 #pragma once
 #include "../utils/file.h"
-
 #ifndef  STB_IMAGE_IMPLEMENTATION
   #define STB_IMAGE_IMPLEMENTATION
   #include <stb_image.h>
 #endif
+#ifndef  STB_IMAGE_RESIZE_IMPLEMENTATION
+  #define STB_IMAGE_RESIZE_IMPLEMENTATION
+  #include <stb_image_resize.h>
+#endif
+
+#define RESIZE_VARIANT_COUNT 4
+int RESIZE_SCALES[RESIZE_VARIANT_COUNT] = { 1, 2, 3, 4 };
 
 int main(int argc, char *argv[]) {
   FILE *file;
@@ -19,14 +25,16 @@ int main(int argc, char *argv[]) {
   char *in;
   char *out;
   char pathSep;
-  int x, y, channels;
+  int w, h, channels, rw, rh, i, scale;
-  stbi_uc *data;
+  stbi_uc *dataOriginal;
+  stbi_uc *dataResized;
 
   if(argc != 3) {
     printf("Invalid number of arguments\n");
     return 1;
   }
 
+  // Set up strings
   pathSep = FILE_PATH_SEP;
   in = argv[1];
   out = argv[2];
@@ -36,29 +44,39 @@ int main(int argc, char *argv[]) {
   fileNormalizeSlashes(out);
 
   // Read in original texture
-  printf("Opening %s\n", in);
   file = fopen(in, "rb");
   if(file == NULL) {
     printf("Failed to open file!\n");
     return 1;
   }
-  data = stbi_load_from_file(file, &x, &y, &channels, STBI_rgb_alpha);
+
-  if(data == NULL) {
+  dataOriginal = stbi_load_from_file(file, &w, &h, &channels, STBI_rgb_alpha);
+  if(dataOriginal == NULL) {
     printf("Failed to load input texture!\n");
     return 1;
   }
+  fclose(file);
 
-  // Write out texture
+  // For each scale.
+  for(i = 0; i < RESIZE_VARIANT_COUNT; i++) {
+    // Resize image
+    scale = RESIZE_SCALES[i];
+    rw = w / scale;
+    rh = h / scale;
+    dataResized = malloc(sizeof(stbi_uc) * rw * rh * channels);
+    stbir_resize_uint8(dataOriginal, w, h, 0, dataResized, rw, rh, 0, channels);
+
+    // Determine output path
     path[0] = '\0';
     if(getcwd(path,sizeof(path)) == NULL) {
       printf("Failed to get current dir!\n");
-    stbi_image_free(data);
+      stbi_image_free(dataOriginal);
       return 1;
     }
 
+
     // Determine Output path
-  strncat(path, &pathSep, 1);
+    sprintf(path, "%s%c%s_%i.texture", path, FILE_PATH_SEP, out, scale);
-  strcat(path, out);
     printf("Writing %s\n", path);
 
     // Open output file
@@ -70,11 +88,15 @@ int main(int argc, char *argv[]) {
     }
 
     // Write texture
-  fwrite(data, sizeof(unsigned char), x*y*channels, file);
+    fwrite(dataResized, sizeof(unsigned char), rw * rh * channels, file);
 
     // Cleanup
     fclose(file);
-  stbi_image_free(data);
+    free(dataResized);
+  }
+
+  // Cleanup
+  stbi_image_free(dataOriginal);
 
   return 0;
 }