sixelized output for ssloy/tinyrenderer (https://github.com/ssloy/tinyrenderer)

main.cpp.patch

diff --git a/Makefile b/Makefile
index 0b0a469..5cbdce8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 SYSCONF_LINK = g++
 CPPFLAGS     = -Wall -Wextra -Weffc++ -pedantic -std=c++98
 LDFLAGS      = -O3
-LIBS         = -lm
+LIBS         = -lm -lsixel
 
 DESTDIR = ./
 TARGET  = main
diff --git a/main.cpp b/main.cpp
index 8ce61dd..436c734 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include <vector>
 #include <limits>
 #include <iostream>
+#include <sixel.h>
 #include "tgaimage.h"
 #include "model.h"
 #include "geometry.h"
@@ -86,8 +87,14 @@ int main(int argc, char** argv) {
         delete model;
     }
     frame.flip_vertically(); // to place the origin in the bottom left corner of the image
-    frame.write_tga_file("framebuffer.tga");
-
+    sixel_encoder_t *encoder = NULL;
+    if (SIXEL_SUCCEEDED(sixel_encoder_new(&encoder, NULL))) {
+        if (SIXEL_FAILED(sixel_encoder_encode_bytes(
+            encoder, frame.buffer(), width, height, SIXEL_PIXELFORMAT_BGR888, NULL, (-1)))) {
+            std::cerr << "failed to output sixels.\n";
+        }
+        sixel_encoder_unref(encoder);
+    }
     delete [] zbuffer;
     return 0;
 }

$ make && ./main obj/african_head/.obj obj/.obj

This patch is in Public Domain. Have fun!