diff --git a/addons/material_maker/engine/multi_renderer.gd b/addons/material_maker/engine/multi_renderer.gd
index 2dd38f902..c6f688274 100644
--- a/addons/material_maker/engine/multi_renderer.gd
+++ b/addons/material_maker/engine/multi_renderer.gd
@@ -27,12 +27,7 @@ signal free_rendering_device
 
 func _ready() -> void:
 	shader_error_handler = load("res://addons/material_maker/engine/shader_error_handler.gd").new()
-	common_shader = "varying float elapsed_time;
-
-void vertex() {
-	elapsed_time = TIME;
-}
-"
+	common_shader = "varying float elapsed_time;\nvoid vertex() {\n\telapsed_time = TIME;\n}\n"
 	common_shader += preload("res://addons/material_maker/shader_functions.tres").text
 	for i in total_renderers:
 		var renderer = preload("res://addons/material_maker/engine/renderer.tscn").instantiate()
diff --git a/material_maker/nodes/debug/debug_popup.gd b/material_maker/nodes/debug/debug_popup.gd
index 879199244..097b16c3d 100644
--- a/material_maker/nodes/debug/debug_popup.gd
+++ b/material_maker/nodes/debug/debug_popup.gd
@@ -30,7 +30,7 @@ func generate_shadertoy() -> String:
 	code += mm_renderer.common_shader
 	code += "\n"
 	code = code.replace("varying float elapsed_time;", "")
-	code = code.replace("void vertex() {\n\telapsed_time = TIME;\n}\n", "")
+	code = code.replace("void vertex() {\n\telapsed_time = TIME;\n}", "")
 	code += src_code.uniforms_as_strings("const", true)
 	code += "\n"
 	code += src_code.get_globals_string(src_code.defs+src_code.code)
@@ -43,7 +43,7 @@ func generate_shadertoy() -> String:
 	code += "vec2 UV = vec2(0.0, 1.0) + vec2(1.0, -1.0) * (fragCoord-0.5*(iResolution.xy-vec2(minSize)))/minSize;\n"
 	code += src_code.code
 	if src_code.output_values.has("rgba"):
-		code += "fragColor = "+src_code.output_values.rgba+";\n"
+		code += "fragColor = vec4(mix(vec3(0.5), "+src_code.output_values.rgba+".rgb, "+src_code.output_values.rgba+".a), 1.0);\n"
 	else:
 		code += "fragColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
 	code += "}\n"
@@ -56,7 +56,7 @@ func generate_godot_canvasitem() -> String:
 	var code = "shader_type canvas_item;\n"
 	code += "const float seed_variation = 0.0;\n"
 	code += mm_renderer.common_shader
-	code += src_code.uniforms_as_strings()
+	code += src_code.uniforms_as_strings("uniform", true)
 	code += "\n"
 	code += src_code.get_globals_string(src_code.defs+src_code.code)
 	code += src_code.defs
@@ -78,7 +78,7 @@ func generate_godot_spatial() -> String:
 	code += "\nconst float seed_variation = 0.0;\n"
 	code += mm_renderer.common_shader
 	code += "\n"
-	code += src_code.uniforms_as_strings()
+	code += src_code.uniforms_as_strings("uniform", true)
 	code += "\n"
 	code += src_code.get_globals_string(src_code.defs+src_code.code)
 	code += src_code.defs