diff --git a/hqflt/cg/quad.cg b/hqflt/cg/quad.cg
new file mode 100644
index 0000000000..41b771f5ae
--- /dev/null
+++ b/hqflt/cg/quad.cg
@@ -0,0 +1,99 @@
+/*
+
+   Copyright (C) 2007 guest(r) - guest.r@gmail.com
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+/*
+
+   The 2xSaL shader processes a gfx. surface and redraws it 2x finer.
+   
+   A linear post-resize can fit the image to any resolution.
+
+   Note: set scaler to normal2x.
+
+*/
+
+/* Default Vertex shader */
+void main_vertex
+(
+ float4 position	: POSITION,
+ float4 color	: COLOR,
+ float2 texCoord : TEXCOORD0,
+
+ uniform float4x4 modelViewProj,
+
+ out float4 oPosition : POSITION,
+ out float4 oColor    : COLOR,
+ out float2 otexCoord : TEXCOORD
+ )
+{
+   oPosition = mul(modelViewProj, position);
+   oColor = color;
+   otexCoord = texCoord;
+}
+
+struct output
+{
+   float4 color : COLOR;
+};
+
+struct input
+{
+  float2 video_size;
+  float2 texture_size;
+  float2 output_size;
+};
+
+struct deltas
+{
+   float2 UL, UR, DL, DR;
+};
+
+float3 quad_inter(float3 x0, float3 x1, float3 x2, float x)
+{
+   float3 poly[3];
+   poly[2] = 0.5*x0 - x1 + 0.5*x2;
+   poly[1] = -1.5*x0 + 2.0*x1 - 0.5*x2;
+   poly[0] = x0;
+   return poly[2] * x * x + poly[1] * x + poly[0];
+}
+
+output main_fragment (float2 tex : TEXCOORD0, uniform input IN, uniform sampler2D s0 : TEXUNIT0)
+{
+   float2 texsize = IN.texture_size;
+   float vid_height = IN.output_size.y;
+   float dx = float(pow(2.0 * texsize.x, -1.0));
+   float dy = float(pow(2.0 * texsize.y, -1.0));
+
+   float3 c01 = tex2D(s0, tex + float2(-dx, 0)).xyz;
+   float3 c10 = tex2D(s0, tex + float2(0, -dy)).xyz;
+   float3 c11 = tex2D(s0, tex + float2(0, 0)).xyz;
+   float3 c12 = tex2D(s0, tex + float2(0, dy)).xyz;
+   float3 c21 = tex2D(s0, tex + float2(dx, 0)).xyz;
+
+   float3 xval0 = quad_inter(c01, c11, c21, tex.x * texsize.x - floor(tex.x * texsize.x) + 1.0);
+   float3 yval0 = quad_inter(c10, c11, c12, tex.y * texsize.y - floor(tex.y * texsize.y) + 1.0);
+
+   output OUT;
+   //float scanline_mod = 1.0 - 0.1 * floor(fmod(vid_height * tex.y, 2.0));
+   float scanline_mod = 1.0;
+
+   OUT.color = float4(lerp(xval0, yval0, 0.5), 1.0) * scanline_mod;
+   return OUT;
+}
+