git.y1.nz

commit 113367301f0fb6f0ada37af21a61fe7e00bc2b2e
parent c4069d2db01314afafc65db71e330ca1af00e58b
Author: bbbbbr <reg+github@roughhousing.com>
Date:   Thu, 16 Dec 2021 22:10:16 -0800

Merge pull request #292 from bbbbbr/png2asset_check_image_size

png2asset: require image size to be an even multiple of tile size
Diffstat:
M
gbdk-support/png2asset/png2asset.cpp
8
++++++++

1 file changed, 8 insertions(+), 0 deletions(-)
diff --git a/gbdk-support/png2asset/png2asset.cpp b/gbdk-support/png2asset/png2asset.cpp
@@ -16,6 +16,7 @@ void loadFile(vector<unsigned char>& buffer, const std::string& filename);
 bool export_as_map = false;
 bool use_map_attributes = false;
 size_t pal_size;
+#define TILE_W 8
 int tile_h;
 int bpp = 2;
 
@@ -546,6 +547,13 @@ int main(int argc, char *argv[])
 			return 1;
 		}
 
+		// Validate image dimensions
+		if( ((image32.w % TILE_W) != 0) || ((image32.h % tile_h) != 0) )
+		{
+			printf("Error: Image size %d x %d isn't an even multiple of tile size %d x %d\n", image32.w, image32.h, TILE_W, tile_h);
+			return 1;
+		}
+
 		int* palettes_per_tile = new int[(image32.w / 8) * (image32.h /tile_h)];
 		vector< SetPal > palettes;
 		for(unsigned int y = 0; y < image32.h; y += tile_h)

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