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Ignore num_tiles if it would truncate non-transparent tiles (#1729)

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This commit is contained in:
Martin Griffin
2022-08-19 04:07:25 +01:00
committed by GitHub
parent 936ebbd973
commit 5e593a62fb
8 changed files with 154 additions and 119 deletions
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tools/gbagfx/gfx.c
+26 -6
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@@ -397,7 +397,7 @@ void ReadImage(char *path, int tilesWidth, int bitDepth, int metatileWidth, int
free(buffer);
}
void WriteImage(char *path, int numTiles, int bitDepth, int metatileWidth, int metatileHeight, struct Image *image, bool invertColors)
void WriteImage(char *path, enum NumTilesMode numTilesMode, int numTiles, int bitDepth, int metatileWidth, int metatileHeight, struct Image *image, bool invertColors)
{
int tileSize = bitDepth * 8;
@@ -424,7 +424,8 @@ void WriteImage(char *path, int numTiles, int bitDepth, int metatileWidth, int m
FATAL_ERROR("The specified number of tiles (%d) is greater than the maximum possible value (%d).\n", numTiles, maxNumTiles);
int bufferSize = numTiles * tileSize;
unsigned char *buffer = malloc(bufferSize);
int maxBufferSize = maxNumTiles * tileSize;
unsigned char *buffer = malloc(maxBufferSize);
if (buffer == NULL)
FATAL_ERROR("Failed to allocate memory for pixels.\n");
@@ -433,17 +434,36 @@ void WriteImage(char *path, int numTiles, int bitDepth, int metatileWidth, int m
switch (bitDepth) {
case 1:
ConvertToTiles1Bpp(image->pixels, buffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
ConvertToTiles1Bpp(image->pixels, buffer, maxNumTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
break;
case 4:
ConvertToTiles4Bpp(image->pixels, buffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
ConvertToTiles4Bpp(image->pixels, buffer, maxNumTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
break;
case 8:
ConvertToTiles8Bpp(image->pixels, buffer, numTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
ConvertToTiles8Bpp(image->pixels, buffer, maxNumTiles, metatilesWide, metatileWidth, metatileHeight, invertColors);
break;
}
WriteWholeFile(path, buffer, bufferSize);
bool zeroPadded = true;
for (int i = bufferSize; i < maxBufferSize && zeroPadded; i++) {
if (buffer[i] != 0)
{
switch (numTilesMode)
{
case NUM_TILES_IGNORE:
break;
case NUM_TILES_WARN:
fprintf(stderr, "Ignoring -num_tiles %d because tile %d contains non-transparent pixels.\n", numTiles, 1 + i / tileSize);
zeroPadded = false;
break;
case NUM_TILES_ERROR:
FATAL_ERROR("Tile %d contains non-transparent pixels.\n", 1 + i / tileSize);
break;
}
}
}
WriteWholeFile(path, buffer, zeroPadded ? bufferSize : maxBufferSize);
free(buffer);
}