Multitexturing support

- added CImage class for loading/saving images and a simple test for it
- added libpng library to build
- added Gfx::Texture struct
- updated the Gfx::CDevice interface to include new features
- implemented the new features in Gfx::CGLDevice

2 files changed, 40 insertions, 0 deletions

diff --git a/src/common/test/CMakeLists.txt b/src/common/test/CMakeLists.txt
new file mode 100644
index 0000000..680116c
--- /dev/null
+++ b/src/common/test/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 2.8)
+
+set(CMAKE_BUILD_TYPE debug)
+set(CMAKE_CXX_FLAGS_DEBUG "-Wall -g -O0")
+
+add_executable(image_test ../image.cpp image_test.cpp)
diff --git a/src/common/test/image_test.cpp b/src/common/test/image_test.cpp
new file mode 100644
index 0000000..0ad1ee2
--- /dev/null
+++ b/src/common/test/image_test.cpp
@@ -0,0 +1,34 @@
+#include "../image.h"
+
+#include <SDL/SDL.h>
+#include <stdio.h>
+
+/* For now, just a simple test: loading a file from image
+ * and saving it to another in PNG. */
+
+int main(int argc, char *argv[])
+{
+    if (argc != 3)
+    {
+        printf("Usage: %s in_image out_image\n", argv[0]);
+        return 0;
+    }
+
+    CImage image;
+
+    if (! image.Load(argv[1]))
+    {
+        std::string err = image.GetError();
+        printf("Error loading '%s': %s\n", err.c_str());
+        return 1;
+    }
+
+    if (! image.SavePNG(argv[2]))
+    {
+        std::string err = image.GetError();
+        printf("Error saving PNG '%s': %s\n", err.c_str());
+        return 2;
+    }
+
+    return 0;
+}