Differential D3505 Diff 11310 source/blender/draw/engines/lanpr/shaders/lanpr_line_connection.geometry

Changeset View

Standalone View

source/blender/draw/engines/lanpr/shaders/lanpr_line_connection.geometry

This file was added.

				layout (lines_adjacency) in;
				layout (triangle_strip, max_vertices = 10000) out;

				in vec2 gOffset[];

				uniform float LineWidth;
				uniform float TaperLDist;
				uniform float TaperRDist;
				uniform float TaperLStrength;
				uniform float TaperRStrength;


				#define M_PI 3.1415926535897932384626433832795

				vec4 MakeLeftTaperLinear(vec4 L, vec4 a, float offset){
				if(offset >= TaperLDist) return a;
				a = mix(mix(a,L,TaperLStrength),a,offset/TaperLDist);
				return a;
				}

				vec4 MakeRightTaperLinear(vec4 R, vec4 c, float offset){
				if(offset >= TaperRDist) return c;
				c = mix(mix(c,R,TaperRStrength),c,offset/TaperRDist);
				return c;
				}

				void main() {

				float LAngle,RAngle;

				vec4 LL = gl_in[0].gl_Position,
				L = gl_in[1].gl_Position,
				R = gl_in[2].gl_Position,
				RR = gl_in[3].gl_Position;

				float OffsetL = gOffset[1].x;
				float OffsetR = gOffset[2].x;
				float OffsetL2 = gOffset[1].y;
				float OffsetR2 = gOffset[2].y;

				if(L==R \|\| L==LL \|\| R == RR \|\| LL==RR \|\| L==RR \|\| R==LL) return;

				vec4 a;
				vec4 b;
				vec4 c;
				vec4 d;
				vec4 Line = R-L;
				vec4 Normal = normalize(vec4(-Line.y,Line.x,0,0));

				a = L - LineWidth * Normal*0.001;
				b = L + LineWidth * Normal*0.001;
				c = R - LineWidth * Normal*0.001;
				d = R + LineWidth * Normal*0.001;

				float lim = LineWidth*0.002;

				{
				vec4 Tangent = normalize( normalize(L-LL)+normalize(R-L));
				vec4 Minter = normalize(vec4(-Tangent.y,Tangent.x,0,0));
				float length = LineWidth/(dot(Minter,Normal))*0.001;
				a = L - length*Minter;
				b = L + length*Minter;
				if(distance(a,b)>2lim){ a = L - limMinter; b=L+lim*Minter;}
				}

				{
				vec4 Tangent = normalize( normalize(RR-R)+normalize(R-L));
				vec4 Minter = normalize(vec4(-Tangent.y,Tangent.x,0,0));
				float length = LineWidth/(dot(Minter,Normal))*0.001;
				c = R - length*Minter;
				d = R + length*Minter;
				if(distance(c,d)>2lim){ c = R - limMinter; d=R+lim*Minter;}
				}

				a = MakeLeftTaperLinear(L,a,OffsetL);
				b = MakeLeftTaperLinear(L,b,OffsetL);
				c = MakeLeftTaperLinear(R,c,OffsetR);
				d = MakeLeftTaperLinear(R,d,OffsetR);

				a = MakeRightTaperLinear(L,a,OffsetL2);
				b = MakeRightTaperLinear(L,b,OffsetL2);
				c = MakeRightTaperLinear(R,c,OffsetR2);
				d = MakeRightTaperLinear(R,d,OffsetR2);

				a.w=1;
				b.w=1;
				c.w=1;
				d.w=1;

				gl_Position = a;
				EmitVertex();
				gl_Position = b;
				EmitVertex();
				gl_Position = c;
				EmitVertex();
				//EndPrimitive();

				gl_Position = c;
				EmitVertex();
				gl_Position = d;
				EmitVertex();
				gl_Position = b;
				EmitVertex();
				//EndPrimitive();
				}
				No newline at end of file