35 lines
748 B
GLSL
35 lines
748 B
GLSL
#version 430 core
|
|
layout (triangles) in;
|
|
layout (triangle_strip, max_vertices = 4) out;
|
|
in vec4 vCol[];
|
|
out vec4 gColor;
|
|
out vec2 gBoundingBox;
|
|
|
|
uniform vec2 winSize;
|
|
uniform float zoom;
|
|
|
|
void main()
|
|
{
|
|
vec3 pa = gl_in[0].gl_Position.xyz;
|
|
vec3 pb = gl_in[1].gl_Position.xyz;
|
|
vec3 pc = gl_in[2].gl_Position.xyz;
|
|
gColor = vCol[0];
|
|
|
|
gBoundingBox = vec2 (-1,1);
|
|
gl_Position = vec4 (pb, 1);
|
|
//gl_Position = vec4 (0.5,0,0, 1);
|
|
EmitVertex();
|
|
gBoundingBox = vec2 (1,1);
|
|
gl_Position = vec4 (pa, 1);
|
|
EmitVertex();
|
|
gBoundingBox = vec2 (-1,-1);
|
|
gl_Position = vec4 (pc, 1);
|
|
// gl_Position = vec4 (0.5,0.5,0, 1);
|
|
EmitVertex();
|
|
gBoundingBox = vec2 (1,-1);
|
|
gl_Position = vec4 (pa + pc - pb, 1);
|
|
EmitVertex();
|
|
|
|
EndPrimitive();
|
|
}
|