+"\n",
+"#ifdef USEFXAA\n",
+"// graphitemaster: based off the white paper by Timothy Lottes\n",
+"// http://developer.download.nvidia.com/assets/gamedev/files/sdk/11/FXAA_WhitePaper.pdf\n",
+"vec4 fxaa(vec4 inColor, float maxspan)\n",
+"{\n",
+" vec4 ret = inColor; // preserve old\n",
+" float mulreduct = 1.0/maxspan;\n",
+" float minreduct = (1.0 / 128.0);\n",
+"\n",
+" // directions\n",
+" vec3 NW = dp_texture2D(Texture_First, TexCoord1 + (vec2(-1.0, -1.0) * PixelSize)).xyz;\n",
+" vec3 NE = dp_texture2D(Texture_First, TexCoord1 + (vec2(+1.0, -1.0) * PixelSize)).xyz;\n",
+" vec3 SW = dp_texture2D(Texture_First, TexCoord1 + (vec2(-1.0, +1.0) * PixelSize)).xyz;\n",
+" vec3 SE = dp_texture2D(Texture_First, TexCoord1 + (vec2(+1.0, +1.0) * PixelSize)).xyz;\n",
+" vec3 M = dp_texture2D(Texture_First, TexCoord1).xyz;\n",
+"\n",
+" // luminance directions\n",
+" vec3 luma = vec3(0.299, 0.587, 0.114);\n",
+" float lNW = dot(NW, luma);\n",
+" float lNE = dot(NE, luma);\n",
+" float lSW = dot(SW, luma);\n",
+" float lSE = dot(SE, luma);\n",
+" float lM = dot(M, luma);\n",
+" float lMin = min(lM, min(min(lNW, lNE), min(lSW, lSE)));\n",
+" float lMax = max(lM, max(max(lNW, lNE), max(lSW, lSE)));\n",
+"\n",
+" // direction and reciprocal\n",
+" vec2 dir = vec2(-((lNW + lNE) - (lSW + lSE)), ((lNW + lSW) - (lNE + lSE)));\n",
+" float rcp = 1.0/(min(abs(dir.x), abs(dir.y)) + max((lNW + lNE + lSW + lSE) * (0.25 * mulreduct), minreduct));\n",
+"\n",
+" // span\n",
+" dir = min(vec2(maxspan, maxspan), max(vec2(-maxspan, -maxspan), dir * rcp)) * PixelSize;\n",
+"\n",
+" vec3 rA = (1.0/2.0) * (\n",
+" dp_texture2D(Texture_First, TexCoord1 + dir * (1.0/3.0 - 0.5)).xyz +\n",
+" dp_texture2D(Texture_First, TexCoord1 + dir * (2.0/3.0 - 0.5)).xyz);\n",
+" vec3 rB = rA * (1.0/2.0) + (1.0/4.0) * (\n",
+" dp_texture2D(Texture_First, TexCoord1 + dir * (0.0/3.0 - 0.5)).xyz +\n",
+" dp_texture2D(Texture_First, TexCoord1 + dir * (3.0/3.0 - 0.5)).xyz);\n",
+" float lB = dot(rB, luma);\n",
+"\n",
+" ret.xyz = ((lB < lMin) || (lB > lMax)) ? rA : rB;\n",
+" ret.a = 1.0;\n",
+" return ret;\n",
+"}\n",
+"#endif\n",
+"\n",