Circular point renderable

modules/softwareintegration/rendering/renderablepointscloud.cpp

@@ -162,7 +162,6 @@ namespace openspace {
         glBlendEquation(GL_FUNC_ADD);
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
         glEnable(GL_PROGRAM_POINT_SIZE); // Enable gl_PointSize in vertex
-        glEnable(GL_POINT_SMOOTH);
 
         glBindVertexArray(_vaoID);
         glDrawArrays(GL_POINTS, 0, static_cast<GLsizei>(_varray.size()));

modules/softwareintegration/shaders/point_fs.glsl

@@ -37,6 +37,10 @@ Fragment getFragment() {
     frag.depth     = vs_depthClipSpace;
     frag.gPosition = vs_positionViewSpace;
 
+    vec2 temp = gl_PointCoord - vec2(0.5);
+    float f = dot(temp, temp);
+    if (f>0.25) discard;
+
     // There is no normal here
     frag.gNormal = vec4(0.0, 0.0, -1.0, 1.0);