diff --git a/test/nonfunctional/gtu-famicom.slangp b/test/nonfunctional/gtu-famicom.slangp
index 88d3038..141fa95 100644
--- a/test/nonfunctional/gtu-famicom.slangp
+++ b/test/nonfunctional/gtu-famicom.slangp
@@ -1,27 +1,27 @@
 shaders = 5
 
-shader0 = shaders/gtu-famicom/DAC.slang
+shader0 = shaders/gtu-famicom/DAC_LUT.slang
 scale_type_x0 = source
 scale_x0 = 8.0
 scale_type_y0 = source
 scale_y0 = 1.0
-float_framebuffer0 = true
 filter_linear0 = false
 frame_count_mod0 = 2
+float_framebuffer0 = true
 
 shader1 = shaders/gtu-famicom/lowPass.slang
 scale_type_1 = source
 scale_1 = 1.0
-float_framebuffer1 = true
 filter_linear1 = false
 frame_count_mod1 = 32
+float_framebuffer1 = true
 
 shader2 = shaders/gtu-famicom/combFilter.slang
 scale_type_2 = source
 scale_2 = 1.0
-float_framebuffer2 = true
 filter_linear2 = false
 frame_count_mod2 = 2
+float_framebuffer2 = true
 
 shader3 = shaders/gtu-famicom/scaleX.slang
 scale_type_x3 = viewport
@@ -36,5 +36,11 @@ scale_type_x4 = source
 scale_x4 = 1.0
 scale_type_y4 = viewport
 scale_y4 = 1.0
-float_framebuffer4 = true
 filter_linear4 = false
+float_framebuffer4 = true
+
+textures = nestable
+nestable = shaders/gtu-famicom/NesTable.png
+nestable_linear = false
+nestable_mipmap = false
+nestable_wrap_mode = clamp_to_border
\ No newline at end of file
diff --git a/test/nonfunctional/shaders/gtu-famicom/DAC_LUT.slang b/test/nonfunctional/shaders/gtu-famicom/DAC_LUT.slang
new file mode 100644
index 0000000..9a0de0e
--- /dev/null
+++ b/test/nonfunctional/shaders/gtu-famicom/DAC_LUT.slang
@@ -0,0 +1,50 @@
+#version 450
+
+layout(std140, set = 0, binding = 0) uniform UBO
+{
+   mat4 MVP;
+   vec4 OutputSize;
+   vec4 OriginalSize;
+   vec4 SourceSize;
+   uint FrameCount;
+} global;
+
+////////////////////////////////////////////////////////
+//	GTU-famicom version 0.50
+//	Author: aliaspider - aliaspider@gmail.com
+//	License: GPLv3      
+////////////////////////////////////////////////////////
+
+#define GET_LEVEL(X) ((X)*(255.0f / (128.0f*(1.962f-.518f)))-(.518f / (1.962f-.518f)))
+
+#pragma stage vertex
+layout(location = 0) in vec4 Position;
+layout(location = 1) in vec2 TexCoord;
+layout(location = 0) out vec2 vTexCoord;
+layout(location = 1) out float colorPhase;
+
+void main()
+{
+   gl_Position = global.MVP * Position;
+   vTexCoord = TexCoord;
+   vec2 pos = (vTexCoord.xy*global.OutputSize.xy)-0.5;
+   colorPhase = 8.0001 + pos.x + pos.y * 4.0001 + global.FrameCount * 4.0001;
+}
+
+#pragma stage fragment
+layout(location = 0) in vec2 vTexCoord;
+layout(location = 1) in float colorPhase;
+layout(location = 0) out vec4 FragColor;
+layout(set = 0, binding = 2) uniform sampler2D Source;
+layout(set = 0, binding = 3) uniform sampler2D nestable;
+
+void main()
+{
+	vec4 c = texture(Source, vTexCoord.xy);
+	
+	vec2 pixmapCoord;
+	pixmapCoord.x = c.x * (15.0 / (16.0 * 4.0)) + c.y * (3.0 / 4.0) +(0.5 / (16.0 * 4.0));
+	pixmapCoord.y = 1.0 - (floor(mod(colorPhase + 0.5, 12.0)) / (12.0 * 8.0) + c.z * (7.0 / 8.0) + (0.5 / (12.0 * 8.0)));
+
+   FragColor = vec4(GET_LEVEL(texture(nestable, pixmapCoord.xy).r));//vec4(signal);
+}
\ No newline at end of file
diff --git a/test/nonfunctional/shaders/gtu-famicom/NesTable.png b/test/nonfunctional/shaders/gtu-famicom/NesTable.png
new file mode 100644
index 0000000..929fa72
Binary files /dev/null and b/test/nonfunctional/shaders/gtu-famicom/NesTable.png differ
diff --git a/test/nonfunctional/shaders/gtu-famicom/combFilter.slang b/test/nonfunctional/shaders/gtu-famicom/combFilter.slang
index 6b33cf1..2d256b9 100644
--- a/test/nonfunctional/shaders/gtu-famicom/combFilter.slang
+++ b/test/nonfunctional/shaders/gtu-famicom/combFilter.slang
@@ -24,8 +24,6 @@ layout(std140, set = 0, binding = 0) uniform UBO
 //	License: GPLv3
 ////////////////////////////////////////////////////////
 
-//#include "config.h"
-
 #define pi			3.14159265358
 
 #pragma stage vertex
@@ -38,8 +36,8 @@ void main()
 {
    gl_Position = global.MVP * Position;
    vTexCoord = TexCoord;
-   vec2 pos = (vTexCoord.xy*params.OutputSize.xy)-0.5;
-   colorPhase = 8.0001 + pos.x + pos.y * 4.0001 + params.FrameCount * 4.0001 + 4.0001 + params.phaseOffset * 12.0001;
+   vec2 pos = (vTexCoord.xy * params.OutputSize.xy * params.SourceSize.xy * params.SourceSize.zw) - 0.5;
+   colorPhase = 8.0 + pos.x + pos.y * 4.0 + params.FrameCount * 4.0 + 4.0 + params.phaseOffset * 12.0;
 }
 
 #pragma stage fragment
@@ -56,18 +54,19 @@ void main()
 	
 	if (params.combFilter > 0.0)
 	{
-		float prev6 = texture(Source, vTexCoord.xy - vec2(5.9999 * (params.OutputSize.z), 0.0)).r;
-		signal = (current + prev6) / 2.0001;
+		float prev6 = texture(Source, vTexCoord.xy - vec2(6.0 * (params.OutputSize.x * params.SourceSize.x * params.SourceSize.z), 0.0)).r;
+		signal = (current + prev6) / 2.0;
 		float chromaSignal = current - signal;
-		I = chromaSignal * cos (colorPhase * (2.0001 * pi / 12.0001))*2.0001;
-		Q = chromaSignal * sin (colorPhase * (2.0001 * pi / 12.0001))*2.0001;
+		I = chromaSignal * cos (colorPhase * (2.0 * pi / 12.0)) * 2.0;
+		Q = chromaSignal * sin (colorPhase * (2.0 * pi / 12.0)) * 2.0;
 	}
 	else
 	{
 		signal = current;
-		I = signal * cos (colorPhase * (2.0001 * pi / 12.0001))*2.0001;
-		Q = signal * sin (colorPhase * (2.0001 * pi / 12.0001))*2.0001;
+		I = signal * cos (colorPhase * (2.0 * pi / 12.0))*2.0;
+		Q = signal * sin (colorPhase * (2.0 * pi / 12.0))*2.0;
 	}
 	
 	FragColor = vec4(signal, I, Q, 1.0);
-}
\ No newline at end of file
+}
+
diff --git a/test/nonfunctional/shaders/gtu-famicom/lowPass.slang b/test/nonfunctional/shaders/gtu-famicom/lowPass.slang
index 390ff56..c5879bd 100644
--- a/test/nonfunctional/shaders/gtu-famicom/lowPass.slang
+++ b/test/nonfunctional/shaders/gtu-famicom/lowPass.slang
@@ -37,7 +37,7 @@ layout(std140, set = 0, binding = 0) uniform UBO
 #define S(i) (texture(Source, vec2(vTexCoord.x - X(i)/params.SourceSize.x,vTexCoord.y)).x)
 #define VAL(i) (S(i)*STU(X(i),(params.signalResolution * params.SourceSize.z)))
 
-float rand(vec2 co)
+float rand2(vec2 co)
 {
     float c = 43758.5453;
     float dt= dot(co.xy ,vec2(12.9898,78.233));
@@ -45,6 +45,9 @@ float rand(vec2 co)
     return fract(sin(sn) * c);
 }
 
+float rand(vec2 co){
+	return fract(sin(dot(co.xy, vec2(12.9898, 78.233))) * 43758.5453);
+}
 
 #pragma stage vertex
 layout(location = 0) in vec4 Position;
diff --git a/test/nonfunctional/shaders/gtu-famicom/scaleX.slang b/test/nonfunctional/shaders/gtu-famicom/scaleX.slang
index 368e31e..31d153f 100644
--- a/test/nonfunctional/shaders/gtu-famicom/scaleX.slang
+++ b/test/nonfunctional/shaders/gtu-famicom/scaleX.slang
@@ -28,7 +28,6 @@ layout(std140, set = 0, binding = 0) uniform UBO
 //	License: GPLv3
 ////////////////////////////////////////////////////////
 
-#define YIQ_to_RGB 	mat3x3( 1.0   , 1.0      , 1.0      ,	0.9563   , -0.2721   , -1.1070   ,		0.6210   , -0.6474   , 1.7046   )
 #define pi			3.14159265358
 
 float d(float x, float b){
@@ -60,7 +59,8 @@ layout(set = 0, binding = 2) uniform sampler2D Source;
 void main()
 {
 	float	offset	= fract((vTexCoord.x * params.SourceSize.x) - 0.5);
-	vec3	tempColor = vec3(0.0);
+	vec3	YIQ	=	vec3(0.0);
+	vec3	RGB	=	vec3(0.0);
 	float 	X;
 	vec3 	c;
 	float	Y = params.signalResolutionY * params.SourceSize.z;
@@ -77,10 +77,12 @@ void main()
 		c.x *= ((d(X,Y) + sin(d(X,Y)) - e(X,Y) - sin(e(X,Y))) / (2.0 * pi));
 		c.y *= ((d(X,I) + sin(d(X,I)) - e(X,I) - sin(e(X,I))) / (2.0 * pi));
 		c.z *= ((d(X,Q) + sin(d(X,Q)) - e(X,Q) - sin(e(X,Q))) / (2.0 * pi));
-		tempColor+=c;
+		YIQ+=c;
 	}
 
-	tempColor=clamp(YIQ_to_RGB * tempColor,0.0,1.0);
-	
-   FragColor = vec4(tempColor, 1.0);
+	RGB.r = YIQ.r + 0.956 * YIQ.g + 0.621 * YIQ.b;
+	RGB.g = YIQ.r - 0.272 * YIQ.g - 0.647 * YIQ.b;
+	RGB.b = YIQ.r - 1.106 * YIQ.g + 1.703 * YIQ.b;
+
+	FragColor = vec4(clamp(RGB, 0.0, 1.0), 1.0);
 }
\ No newline at end of file