diff --git a/internal/asset/shader/world/geometry.frag b/internal/asset/shader/world/geometry.frag
index 324b423..a504424 100644
--- a/internal/asset/shader/world/geometry.frag
+++ b/internal/asset/shader/world/geometry.frag
@@ -17,12 +17,13 @@ const float gamma = 2.2;
 
 
 void main() {
+	outputColor = texture(tex, fragTexCoord);
+	if (outputColor.a < 1e-3)
+		discard;
 
 	outputPosition.xyz = fragPosWorld;
 	outputPosition.w = fragDepthView;
 	outputNormal.xyz = fragNormal;
 	outputNormal.w = fragPosLightspaceZ;
-	outputColor = texture(tex, fragTexCoord);
-	outputColor = vec4(outputColor.rgb, outputColor.a);
 }
 
diff --git a/internal/asset/texture/world/glass.png b/internal/asset/texture/world/glass.png
new file mode 100644
index 0000000..7270ac1
Binary files /dev/null and b/internal/asset/texture/world/glass.png differ
diff --git a/internal/game/logic.go b/internal/game/logic.go
index b9c1384..0a81f68 100644
--- a/internal/game/logic.go
+++ b/internal/game/logic.go
@@ -24,7 +24,7 @@ const (
 	PlayerPlaceCooldown = 200 * time.Millisecond
 )
 
-var placeId = [10]int{blocks.Stone, blocks.Dirt, blocks.Grass, blocks.LogOak, blocks.PlanksOak, blocks.LeavesOak, blocks.Debug, blocks.DebugDir, blocks.Bedrock, blocks.Water}
+var placeId = [10]int{blocks.Stone, blocks.Dirt, blocks.Grass, blocks.LogOak, blocks.PlanksOak, blocks.LeavesOak, blocks.Glass, blocks.DebugDir, blocks.Bedrock, blocks.Water}
 var placei = 0
 
 var logs string
diff --git a/internal/game/render.go b/internal/game/render.go
index febabf6..92392dc 100644
--- a/internal/game/render.go
+++ b/internal/game/render.go
@@ -129,6 +129,7 @@ func (g *Game) initRender() (err error) {
 	r.texture.GenerateMipMap()
 	gl.BindTexture(gl.TEXTURE_2D, r.texture.Handle())
 	gl.TexParameterf(gl.TEXTURE_2D, gl.TEXTURE_MAX_ANISOTROPY, maxaf)
+	r.depthmap.shader.SetUniformTexture("tex", r.texture)
 	r.gbuffer.shader.SetUniformTexture("tex", r.texture)
 	r.water.shader.SetUniformTexture("tex", r.texture)
 	igwrap.SetTextureFlag(r.texture.Handle(), igwrap.TextureFlag_Linear, igwrap.TextureFlag_FlipY)
diff --git a/internal/world/blocks/default.go b/internal/world/blocks/default.go
index baff876..b6d95b7 100644
--- a/internal/world/blocks/default.go
+++ b/internal/world/blocks/default.go
@@ -20,6 +20,8 @@ const (
 
 	Water
 
+	Glass
+
 	Count
 )
 
@@ -35,13 +37,15 @@ func init() {
 	world.RegisterBlockBehaviour(7, world.BlockBehaviourStatic(world.BlockAppearance{Name: "bedrock"}))
 	world.RegisterBlockBehaviour(8, world.BlockBehaviourStatic(world.BlockAppearance{Name: "sand"}))
 	world.RegisterBlockBehaviour(9, world.BlockBehaviourStatic(world.BlockAppearance{Name: "log_oak", RenderType: world.ThreeTexture}))
-	world.RegisterBlockBehaviour(10, world.BlockBehaviourStatic(world.BlockAppearance{Name: "leaves_oak"}))
+	world.RegisterBlockBehaviour(10, world.BlockBehaviourStatic(world.BlockAppearance{Name: "leaves_oak", Transparent: true}))
 
 	world.RegisterBlockBehaviour(11, world.BlockBehaviourStatic(world.BlockAppearance{Name: "planks_oak"}))
 
 	world.RegisterBlockBehaviour(12, WaterBehaviour{})
 
-	if Count != 13 {
+	world.RegisterBlockBehaviour(13, world.BlockBehaviourStatic(world.BlockAppearance{Name: "glass", Transparent: true}))
+
+	if Count != 14 {
 		panic("world.DefaultBlocks: block count not correct (check for block numbering in default_blocks.go)")
 	}