ENABLE_GCODE_VIEWER -> Refactoring of shaders for options

resources/shaders/options_110.fs

@@ -1,4 +1,4 @@
-#version 120
+#version 110
 
 uniform vec3 uniform_color;
 

resources/shaders/options_110.vs

@@ -1,11 +1,11 @@
 #version 110
 
 uniform float zoom;
-// x = min, y = max
-uniform vec2 point_sizes;
+uniform float point_size;
+uniform float near_plane_height;
 
 void main()
 {
-    gl_PointSize = clamp(zoom, point_sizes.x, point_sizes.y);
-    gl_Position = ftransform();    
+    gl_Position = ftransform();
+    gl_PointSize = (gl_Position.w == 1.0) ? zoom * near_plane_height * point_size : near_plane_height * point_size / gl_Position.w;
 }

resources/shaders/options_120_flat.fs

@@ -5,31 +5,31 @@ uniform vec3 uniform_color;
 uniform float percent_outline_radius;
 uniform float percent_center_radius;
 
-vec4 hardcoded_color(float sq_radius)
+vec4 hardcoded_color(float sq_radius, vec3 color)
 {
     if ((sq_radius < 0.005625) || (sq_radius > 0.180625))
-        return vec4(0.5 * uniform_color, 1.0);
+        return vec4(0.5 * color, 1.0);
     else
-        return vec4(uniform_color, 1.0);
+        return vec4(color, 1.0);
 }
 
-vec4 customizable_color(float sq_radius)
+vec4 customizable_color(float sq_radius, vec3 color)
 {
     float in_radius = 0.5 * percent_center_radius;
     float out_radius = 0.5 * (1.0 - percent_outline_radius);
     if ((sq_radius < in_radius * in_radius) || (sq_radius > out_radius * out_radius))
-        return vec4(0.5 * uniform_color, 1.0);
+        return vec4(0.5 * color, 1.0);
     else
-        return vec4(uniform_color, 1.0);
+        return vec4(color, 1.0);
 }
 
 void main()
 {
-    vec2 pos = gl_PointCoord - vec2(0.5, 0.5);
+    vec2 pos = gl_PointCoord - vec2(0.5);
     float sq_radius = dot(pos, pos);
     if (sq_radius > 0.25)
         discard;
-     
-    gl_FragColor = customizable_color(sq_radius);
-//    gl_FragColor = hardcoded_color(sq_radius);
+
+    gl_FragColor = customizable_color(sq_radius, uniform_color);
+//    gl_FragColor = hardcoded_color(sq_radius, uniform_color);
 }

resources/shaders/options_120_flat.vs

@@ -1,11 +1,11 @@
 #version 120
 
 uniform float zoom;
-// x = min, y = max
-uniform vec2 point_sizes;
+uniform float point_size;
+uniform float near_plane_height;
 
 void main()
 {
-    gl_PointSize = clamp(zoom, point_sizes.x, point_sizes.y);
-    gl_Position = ftransform();    
+    gl_Position = ftransform();
+    gl_PointSize = (gl_Position.w == 1.0) ? zoom * near_plane_height * point_size : near_plane_height * point_size / gl_Position.w;
 }

resources/shaders/options_120_solid.fs

@@ -79,7 +79,7 @@ float fragment_depth(vec3 eye_pos)
 
 void main()
 {
-    vec2 pos = gl_PointCoord - vec2(0.5, 0.5);
+    vec2 pos = gl_PointCoord - vec2(0.5);
     float sq_radius = dot(pos, pos);
     if (sq_radius > 0.25)
         discard;

resources/shaders/options_120_solid.vs

@@ -1,14 +1,14 @@
 #version 120
 
 uniform float zoom;
-// x = min, y = max
-uniform vec2 point_sizes;
+uniform float point_size;
+uniform float near_plane_height;
 
 varying vec3 eye_center;
 
 void main()
 {
-    gl_PointSize = clamp(zoom, point_sizes.x, point_sizes.y);
     eye_center = (gl_ModelViewMatrix * gl_Vertex).xyz;
-    gl_Position = ftransform();    
+    gl_Position = ftransform();
+    gl_PointSize = (gl_Position.w == 1.0) ? zoom * near_plane_height * point_size : near_plane_height * point_size / gl_Position.w;
 }