: Open Spotlight ( Cmd + Space ), type ~/Library/Application Support/minecraft/resourcepacks , and press Enter .
: Copy the "Clear_Glass_Pack_1.19.3.zip" file directly into that resourcepacks folder. You do not need to unzip it. Activate in Minecraft : Launch Minecraft version 1.19.3 . Go to Options > Resource Packs from the main menu. Clear_Glass_Pack_1.19.3.zip
Simply installing the pack will remove the default white streaks from glass. However, to get "connected" textures (where the borders between adjacent glass blocks disappear), you typically need or a similar optimization mod installed for version 1.19.3. : Open Spotlight ( Cmd + Space ),
: Once OptiFine is installed, go to Options > Video Settings > Quality and set Connected Textures to Fast or Fancy . type ~/Library/Application Support/minecraft/resourcepacks