Differential D3505 Diff 11310 source/blender/draw/engines/lanpr/shaders/lanpr_snake_edge.fragment

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source/blender/draw/engines/lanpr/shaders/lanpr_snake_edge.fragment

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				in vec4 uvcoordsvar;
				uniform sampler2DMS TexSample0;//depth
				uniform sampler2DMS TexSample1;//color
				uniform sampler2DMS TexSample2;//normal
				uniform float uValue0;//normal clamp
				uniform float uValue1;//normal strength
				uniform float uValue2;//depth clamp
				uniform float uValue3;//depth strength
				uniform float zNear;//znear
				uniform float zFar;//zfar

				mat3 sx = mat3(
				1.0, 2.0, 1.0,
				0.0, 0.0, 0.0,
				-1.0, -2.0, -1.0
				);
				mat3 sy = mat3(
				1.0, 0.0, -1.0,
				2.0, 0.0, -2.0,
				1.0, 0.0, -1.0
				);
				vec3 rgb2hsv(vec3 c)
				{
				vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
				vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
				vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
				float d = q.x - min(q.w, q.y);
				float e = 1.0e-10;
				return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
				}
				float linearDepth(float depthSample){
				float d = 2.0 * depthSample - 1.0;
				float zLinear = 2.0 * zNear * zFar / (zFar + zNear - d * (zFar - zNear));
				return zLinear;
				}

				vec4 DetectEdge(sampler2DMS tex, float clamp, float strength){
				mat3 I = mat3(0);
				mat3 J = mat3(0);
				mat3 K = mat3(0);

				ivec2 texSize = textureSize(tex);
				ivec2 sp = ivec2(uvcoordsvar.xy * texSize);
				vec4 cs=vec4(0);

				//sample hardcoded (8) now
				for(int s=0;s<8;s++){
				for (int i = 0; i<3; i++) {
				for (int j = 0; j<3; j++) {
				vec4 col = texelFetch(tex, sp + ivec2(i - 1, j - 1), s);
				vec3 sample1 = vec3((col.r));
				vec3 sample2 = vec3((col.g));
				vec3 sample3 = vec3((col.b));
				I[i][j] += length(sample1) / 8;
				J[i][j] += length(sample2) / 8;
				K[i][j] += length(sample3) / 8;
				}
				}
				cs += texelFetch(TexSample1, sp, s)/8;
				}

				float gx1 = dot(sx[0], I[0]) + dot(sx[1], I[1]) + dot(sx[2], I[2]);
				float gy1 = dot(sy[0], I[0]) + dot(sy[1], I[1]) + dot(sy[2], I[2]);
				float g1 = sqrt(pow(gx1, 2.0) + pow(gy1, 2.0));

				float gx2 = dot(sx[0], J[0]) + dot(sx[1], J[1]) + dot(sx[2], J[2]);
				float gy2 = dot(sy[0], J[0]) + dot(sy[1], J[1]) + dot(sy[2], J[2]);
				float g2 = sqrt(pow(gx2, 2.0) + pow(gy2, 2.0));

				float gx3 = dot(sx[0], K[0]) + dot(sx[1], K[1]) + dot(sx[2], K[2]);
				float gy3 = dot(sy[0], K[0]) + dot(sy[1], K[1]) + dot(sy[2], K[2]);
				float g3 = sqrt(pow(gx3, 2.0) + pow(gy3, 2.0));

				float value = max(max(g1,g2),g3);

				value=value>clamp?value:0;
				return vec4(vec3(value*strength),1);

				//if(value<clamp) value=0;

				//return vec4(pow(value,strength));
				}

				void main()
				{
				float nc=uValue0;//(uValue0==0? 0.01:uValue0);
				float ns=uValue1;//(uValue1==0? 5: uValue1);
				float dc=uValue2;//(uValue2==0? 0.2: uValue2);
				float ds=uValue3;//(uValue3==0? 2.5: uValue3);

				vec4 diffuse = vec4(1,1,1,1);
				vec4 color = (DetectEdge(TexSample0,dc,ds)+DetectEdge(TexSample2,nc,ns));
				gl_FragColor = color;
				};
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