Switch-Toolbox/Toolbox/Shader/Path/TriangleShader2.geom
2020-02-28 16:49:18 -05:00

65 lines
No EOL
1.7 KiB
GLSL

#version 330
layout(points) in;
layout(triangle_strip, max_vertices = 72) out;
in vec4 color[];
out vec4 fragColor;
uniform mat4 mtxMdl;
uniform mat4 mtxCam;
uniform vec4 pathColor;
uniform bool isPickingMode;
uniform float cubeScale;
uniform float controlCubeScale;
float cubeInstanceScale = cubeScale;
vec4 pos;
mat4 mtx = mtxCam*mtxMdl;
vec4 points[8] = vec4[](
vec4(-1.0,-1.0,-1.0, 0.0),
vec4( 1.0,-1.0,-1.0, 0.0),
vec4(-1.0, 1.0,-1.0, 0.0),
vec4( 1.0, 1.0,-1.0, 0.0),
vec4(-1.0,-1.0, 1.0, 0.0),
vec4( 1.0,-1.0, 1.0, 0.0),
vec4(-1.0, 1.0, 1.0, 0.0),
vec4( 1.0, 1.0, 1.0, 0.0)
);
void face(int p1, int p2, int p3, int p4){
gl_Position = mtx * (pos + points[p1]*cubeInstanceScale); EmitVertex();
gl_Position = mtx * (pos + points[p2]*cubeInstanceScale); EmitVertex();
gl_Position = mtx * (pos + points[p3]*cubeInstanceScale); EmitVertex();
gl_Position = mtx * (pos + points[p4]*cubeInstanceScale); EmitVertex();
EndPrimitive();
}
void faceInv(int p3, int p4, int p1, int p2){
gl_Position = mtx * (pos + points[p1]*cubeInstanceScale); EmitVertex();
gl_Position = mtx * (pos + points[p2]*cubeInstanceScale); EmitVertex();
gl_Position = mtx * (pos + points[p3]*cubeInstanceScale); EmitVertex();
gl_Position = mtx * (pos + points[p4]*cubeInstanceScale); EmitVertex();
EndPrimitive();
}
void main(){
//draw point
if(isPickingMode)
fragColor = color[0];
else
fragColor = pathColor*.125+color[0]*.125;
pos = gl_in[0].gl_Position;
faceInv(0,1,2,3);
face(4,5,6,7);
face(0,1,4,5);
faceInv(2,3,6,7);
faceInv(0,2,4,6);
face(1,3,5,7);
cubeInstanceScale = controlCubeScale;
}