[d3d8] Clamp blocks per row to 1

Avoids divide by zero for very tiny textures
AlpyneDreams · Feb 23, 2023 · 51267ed · 51267ed
1 parent 5b02cf1
commit 51267ed
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/d3d8/d3d8_device.h b/src/d3d8/d3d8_device.h
@@ -280,8 +280,8 @@ namespace dxvk {
       UINT rectHeightBlocks = ((rect.bottom-rect.top) / blockHeight);
 
       // Compute bytes per block
-      UINT blocksPerRow  = textureWidth  / blockWidth;
-      UINT bytesPerBlock = lockPitch     / blocksPerRow;
+      UINT blocksPerRow  = std::max(textureWidth / blockWidth, 1u);
+      UINT bytesPerBlock = lockPitch / blocksPerRow;
 
       return bytesPerBlock * (rectHeightBlocks * rectWidthBlocks);
     }