X-Git-Url: http://nitlanguage.org

diff --git a/lib/mnit_android/android_assets.nit b/lib/mnit_android/android_assets.nit
index 8f61c90..d1ee104 100644
--- a/lib/mnit_android/android_assets.nit
+++ b/lib/mnit_android/android_assets.nit
@@ -86,7 +86,7 @@ redef class App
 		var a = load_asset_from_apk(path)
 		if a != null then
 			if path.file_extension == "png" then
-				var png = new Opengles1Image.from_android_asset(a)	
+				var png = new Opengles1Image.from_android_asset(a)
 				a.close
 				return png
 			else if path.file_extension == "txt" then
@@ -118,7 +118,7 @@ end
 
 redef class Opengles1Image
 	# Read a png from a zipped stream
-	new from_android_asset(asset: AndroidAsset) is extern `{
+	new from_android_asset(asset: AndroidAsset) import Int.next_pow `{
 		struct mnit_opengles_Texture *recv = NULL;
 
 		png_structp png_ptr = NULL;
@@ -133,13 +133,16 @@ redef class Opengles1Image
 		unsigned char *pixels = NULL;
 		unsigned int i;
 
+		png_uint_32 width_pow2, height_pow2;
+		unsigned int row_bytes_pow2;
+
 		unsigned char sig[8];
 		int sig_read = AAsset_read(asset, sig, 8);
 		if (png_sig_cmp(sig, 0, sig_read)) {
 			LOGW("invalide png signature");
 			return NULL;
 		}
-		
+
 		png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 		if (png_ptr == NULL) {
 			LOGW("png_create_read_struct failed");
@@ -176,11 +179,16 @@ redef class Opengles1Image
 			png_read_update_info(png_ptr, info_ptr);
 		}
 
-		LOGW("w: %i, h: %i", width, height);
+		width_pow2 = Int_next_pow(width, 2);
+		height_pow2 = Int_next_pow(height, 2);
+
+		LOGW("Loading image of w: %i, h: %i, w2: %d, h2: %d",
+			width, height, width_pow2, height_pow2);
 
 		row_bytes = png_get_rowbytes(png_ptr, info_ptr);
-		pixels = malloc(row_bytes * height);
-		row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height);
+		row_bytes_pow2 = row_bytes * width_pow2 / width;
+		pixels = malloc(row_bytes_pow2 * height_pow2);
+		row_pointers = (png_bytep*)malloc(sizeof(png_bytep) * height_pow2);
 
 		for (i=0; i<height; i++)
 			row_pointers[i] = (png_byte*) malloc(row_bytes);
@@ -188,11 +196,11 @@ redef class Opengles1Image
 		png_read_image(png_ptr, row_pointers);
 
 		for (i = 0; i < height; i++)
-			memcpy(pixels + (row_bytes*i),
-					row_pointers[i], row_bytes);
+			memcpy(pixels + (row_bytes_pow2*i), row_pointers[i], row_bytes);
 
-		recv = mnit_opengles_load_image((const uint_least32_t *)pixels, width, height, has_alpha);
 		LOGW("OK");
+		recv = mnit_opengles_load_image((const uint_least32_t *)pixels,
+			width, height, width_pow2, height_pow2, has_alpha);
 
 	close_png_ptr:
 		if (info_ptr != NULL)
@@ -213,3 +221,13 @@ redef class Opengles1Image
 		return recv;
 	`}
 end
+
+redef universal Int
+	# The first power of `exp` greater or equal to `self`
+	private fun next_pow(exp: Int): Int
+	do
+		var p = 0
+		while p < self do p = p*exp
+		return p
+	end
+end