Textures are fun

.gitignore

@@ -1 +1,4 @@
 texmap
+*.png
+*.ppm
+wget-log

main.c

@@ -1,6 +1,41 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+typedef uint8_t u8;
+
+#define CDEPTH 255
+
+#define log(fmt, ...) fprintf(stderr, fmt "\n", ##__VA_ARGS__)
+#define panic(fmt, ...) { fprintf(stderr, "PANIC: " fmt "\n", ##__VA_ARGS__); exit(EXIT_FAILURE); }
+
+// fb is framebuffer. Thsi dumps a color version (rgb) of a framebuffer 
+// to stdout, which you can pipe to a file or some shit idk
+void dump_ppm(u8 * fb, int width, int height) {
+   log("Dumping framebuffer %dx%d", width, height);
+   printf("P3\n%d %d\n%d\n# Image start\n", width, height, CDEPTH);
+   for(int i = 0; i < width * height * 3; i+=3)
+      printf("%d %d %d\n", fb[i], fb[i+1], fb[i+2]);
+   printf("\n");
+}
 
 int main() {
-   printf("Hello world!\n");
+   log("Program start");
+
+   const int width = 512;
+   const int height = 512;
+   const int fbsize = width * height * 3 * sizeof(u8);
+
+   u8 * fb = malloc(fbsize);
+   if(!fb) {
+      panic("Can't allocate framebuffer");
+   }
+   memset(fb, 0, fbsize);
+
+   // We actually stretch a texture
+
+   dump_ppm(fb, width, height);
+
+   log("Program end");
 }

run.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+./build.sh
+./texmap > image.ppm
+convert image.ppm image.png
+

textoc.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+if [ $# -lt 1 ]
+then
+   echo "You must pass in the texture!"
+   exit 1
+fi
+
+convert $1 -compress none $1.ppm
+