X-Git-Url: https://git.lukelau.me/?p=clouds.git;a=blobdiff_plain;f=debug.hpp;h=daa756a2df82d4bb0549bfac628a3ca0b1cba8a7;hp=debe65e6eab44875f8ed97e02b8f837ae6a8aeaf;hb=HEAD;hpb=69b74f1d5e67236a5396b75628a6e1be0e501631

diff --git a/debug.hpp b/debug.hpp
index debe65e..daa756a 100644
--- a/debug.hpp
+++ b/debug.hpp
@@ -4,6 +4,8 @@
 #include <cstring>
 #include <glm/glm.hpp>
 
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+
 inline void dump(glm::mat4 m) {
   for (int i = 0; i < 4; i++)
     fprintf(stderr, "%f,%f,%f,%f\n", m[i][0], m[i][1], m[i][2], m[i][3]);
@@ -20,22 +22,51 @@ inline void dump(glm::vec2 v) { fprintf(stderr, "{%f,%f}\n", v.x, v.y); }
 typedef struct {
   char head[12];
   short dx /* Width */, dy /* Height */, head2;
-  char pic[600 * 400][3];
+  char pic[1000 * 1000 * 3];
 } TGA;
 char tgahead[12] = {0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
                     0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 
 void saveFBO() {
-  float width = 600, height = 400;
+  GLint ps[4];
+  glGetIntegerv(GL_VIEWPORT, ps);
+  GLint width = ps[2], height = ps[3];
   TGA *tga = (TGA *)malloc(sizeof(TGA));
   memcpy(tga->head, tgahead, 12);
   tga->dx = width;
   tga->dy = height;
   tga->head2 = 0x2018;
   // TODO: flip -- the image is upside down so far
-  glReadPixels(0, 0, width, height, GL_BGR, GL_UNSIGNED_BYTE, tga->pic[0]);
+  glReadPixels(0, 0, width, height, GL_BGR, GL_UNSIGNED_BYTE, tga->pic);
   FILE *cc = fopen("fbo.tga", "wb");
   fwrite(tga, 1, (18 + 3 * width * height), cc);
   fclose(cc);
   free(tga);
 }
+
+void saveImage(char *img, short width, short height, const char *file) {
+  TGA *tga = (TGA *)malloc(sizeof(TGA));
+  memcpy(tga->head, tgahead, 12);
+  tga->dx = width;
+  tga->dy = height;
+  tga->head2 = 0x2018;
+  memcpy(tga->pic, img, width * height * 3);
+  // TODO: flip -- the image is upside down so far
+  FILE *cc = fopen(file, "wb");
+  fwrite(tga, 1, (18 + 3 * width * height), cc);
+  fclose(cc);
+  free(tga);
+}
+
+void saveGrayscale(float *img, short width, short height, const char *file) {
+  char *bytes = (char*)malloc(sizeof(char) * width * height * 3);
+  for (int i = 0; i < width; i++) {
+    for (int j = 0; j < height; j++) {
+      for (int z = 0; z < 3; z++) {
+        bytes[i * 3 + j * width * 3 + z] = (int)(img[i + j * width] * 255.f * 2);
+      }
+    }
+  }
+  saveImage(bytes, width, height, file);
+  free(bytes);
+}