aaron shader

gistfile1.txt

v2f vert (appdata v)
			{
				v2f o;

				v.vertex.x = frac(v.vertex.x + frac(_Time.y * .1));
				//v.vertex.x = frac(v.vertex.x);

				float cSize = _MainTex_TexelSize.z;
				float4 cCd = float4(v.vertex.x, 0, 0, 0);
				//cCd.x = floor(cCd.x * cSize) / cSize;

				float4 p1 = tex2Dlod(_MainTex, float4(cCd.x - (1./cSize), cCd.yzw));
				float4 p2 = tex2Dlod(_MainTex, float4(cCd));
				float4 p3 = tex2Dlod(_MainTex, float4(cCd.x + (1./cSize), cCd.yzw));
				float4 p4 = tex2Dlod(_MainTex, float4(cCd.x + (1./cSize), cCd.yzw));
				
				// jitter endpoints
				float randAngle = v.vertex.w;
				float jitterDir0 = normalize(p3-p1);/
				float jitterDir1 = perpendicular(jitterDir0);
				float jitterRadius = 1.0; // MAYBE SMALLER?
				float3 jitterOffset = jitterDir0 * cos(randAngle) + jitterDir1 * sin(randAngle);
				p1.xyz += jitterOffset;
				p2.xyz += jitterOffset;
				p3.xyz += jitterOffset;
				p4.xyz += jitterOffset;

				pota curve = CatmullRomSpline(p1, p2, p3, p4, (cCd.x * cSize) );
				//pota curve = CatmullRomSpline(p1, p2, p3, p4, _Offset);

				o.vertex = mul(UNITY_MATRIX_MVP, curve.Pos);
				return o;
			}