fix(rendering): itemblocks inventory brightness and orientation

- Fix itemblock brightness and orientation to be exactly same as vanilla blocks
  in inventory.
- Revert machine front facing to the brighter left side as it eases
  differentiating them.
- Optimise inventory itemblock rendering to issue a draw quads only once
  for the entire block, rather than for each side.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/main/java/gregtech/api/util/LightingHelper.java b/src/main/java/gregtech/api/util/LightingHelper.java
index 48c316d0cc..598253b7d7 100644
--- a/src/main/java/gregtech/api/util/LightingHelper.java
+++ b/src/main/java/gregtech/api/util/LightingHelper.java
@@ -56,6 +56,10 @@ public class LightingHelper {
      */
     public LightingHelper(RenderBlocks renderBlocks) {
         this.renderBlocks = renderBlocks;
+        if (renderBlocks.useInventoryTint) {
+            // Block will be rendered in an inventory, so it needs its lightness maxed
+            setLightnessOverride(1.0F);
+        }
     }
 
     /**