28 lines
594 B
GLSL
28 lines
594 B
GLSL
R"(#version 330
|
|
|
|
layout(triangles) in;
|
|
layout(triangle_strip, max_vertices=3) out;
|
|
|
|
out vec3 normal;
|
|
out vec4 pos;
|
|
|
|
in vec2 v_texcoords[];
|
|
out vec2 texcoords;
|
|
|
|
void main( void )
|
|
{
|
|
vec3 a = ( gl_in[1].gl_Position - gl_in[0].gl_Position ).xyz;
|
|
vec3 b = ( gl_in[2].gl_Position - gl_in[0].gl_Position ).xyz;
|
|
vec3 N = normalize( cross( b, a ) );
|
|
|
|
for( int i=0; i<gl_in.length( ); ++i )
|
|
{
|
|
gl_Position = gl_in[i].gl_Position;
|
|
normal = N;
|
|
pos = gl_in[i].gl_Position;
|
|
texcoords = v_texcoords[i];
|
|
EmitVertex( );
|
|
}
|
|
|
|
EndPrimitive( );
|
|
})"; |