Separate out the point_to_gl_Position function, which needs to be updated later

manimlib/shaders/point_to_gl_position.glsl

@@ -0,0 +1,11 @@
+// Assumes theese uniforms exist in the surrounding context
+// uniform float scale;
+// uniform float aspect_ratio;
+// uniform float frame_center;
+
+vec4 point_to_gl_Position(vec3 p){
+    vec3 result = p / scale;
+    result.x /= aspect_ratio;
+    result -= frame_center;
+    gl_Position = vec4(result, 1.0);
+}

manimlib/shaders/quadratic_bezier_fill_geom.glsl

@@ -36,6 +36,7 @@ const float SQRT5 = 2.236068;
 // so to share functionality between this and others, the caller
 // replaces this line with the contents of named file
 #INSERT quadratic_bezier_geometry_functions.glsl
+#INSERT set_gl_Position.glsl
 
 
 mat3 get_xy_to_wz(vec2 b0, vec2 b1, vec2 b2){
@@ -60,18 +61,11 @@ mat3 get_xy_to_wz(vec2 b0, vec2 b1, vec2 b2){
     return transform * shift;
 }
 
-void set_gl_Position(vec2 p){
-    vec2 result = p / scale;
-    result.x /= aspect_ratio;
-    result -= frame_center.xy;
-    gl_Position = vec4(result, 0.0, 1.0);
-}
-
 
 void emit_simple_triangle(){
     for(int i = 0; i < 3; i++){
         color = v_color[i];
-        set_gl_Position(bp[i]);
+        set_gl_Position(vec3(bp[i], 0));
         EmitVertex();
     }
     EndPrimitive();
@@ -129,7 +123,7 @@ void emit_pentagon(vec2 bp0, vec2 bp1, vec2 bp2, float orientation){
         if(i < 2)       color = v_color[0];
         else if(i == 2) color = v_color[1];
         else            color = v_color[2];
-        set_gl_Position(corner);
+        set_gl_Position(vec3(corner, 0));
         EmitVertex();
     }
     EndPrimitive();

manimlib/shaders/quadratic_bezier_stroke_geom.glsl

@@ -43,6 +43,7 @@ const float MITER_JOINT = 3;
 // so to share functionality between this and others, the caller
 // replaces this line with the contents of named file
 #INSERT quadratic_bezier_geometry_functions.glsl
+#INSERT set_gl_Position.glsl
 
 
 float angle_between_vectors(vec2 v1, vec2 v2){
@@ -264,14 +265,6 @@ void set_previous_and_next(vec2 controls[3], int degree){
 }
 
 
-void set_gl_Position(vec2 p){
-    vec2 result = p / scale;
-    result.x /= aspect_ratio;
-    result -= frame_center.xy;
-    gl_Position = vec4(result, 0.0, 1.0);
-}
-
-
 void main() {
     vec2 controls[3];
     int degree = get_reduced_control_points(bp[0], bp[1], bp[2], controls);
@@ -311,7 +304,7 @@ void main() {
         uv_stroke_width = stroke_widths[i] / scale_factor;
         color = stroke_colors[i];
 
-        set_gl_Position(corner);
+        set_gl_Position(vec3(corner, 0));
         EmitVertex();
     }
     EndPrimitive();

manimlib/shaders/set_gl_Position.glsl

@@ -0,0 +1,12 @@
+// Assumes theese uniforms exist in the surrounding context
+// uniform float scale;
+// uniform float aspect_ratio;
+// uniform float frame_center;
+
+void set_gl_Position(vec3 point){
+    // TODO, orient in 3d based on certain rotation matrices
+    point /= scale;
+    point.x /= aspect_ratio;
+    point -= frame_center;
+    gl_Position = vec4(point, 1.0);
+}