Imroved appearance of points and perspective

Author: MartBony

res/shaders/points.vert

@@ -17,6 +17,9 @@ out float cursorDistance;
 void main() {
     vec4 world_position = modelMatrix * position;
     gl_Position = projMatrix * viewMatrix * world_position;
+
+    gl_PointSize =  1 + 3 / gl_Position.w;
+
 
     v_Color = color;
     vHighlight = highlight;

src/Renderer/OpenGL/VolumeRenderer.cpp

@@ -476,6 +476,8 @@ void VolumeRenderer::drawCube(mv::ShaderProgram& shader)
 void VolumeRenderer::drawVolume(mv::ShaderProgram& shader, const bool& live)
 {
     if (_numPoints > 0) {
+        glEnable(GL_POINT_SMOOTH);
+        glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
         glDisable(GL_BLEND);
         glEnable(GL_DEPTH_TEST);
         glDepthFunc(GL_LESS);
@@ -508,7 +510,8 @@ void VolumeRenderer::drawVolume(mv::ShaderProgram& shader, const bool& live)
 
         glEnable(GL_BLEND);
         glDisable(GL_DEPTH_TEST);
-    
+        glDisable(GL_VERTEX_PROGRAM_POINT_SIZE);
+        glDisable(GL_POINT_SMOOTH);
     }
 }