Treat joint_type as a uniform

manimlib/mobject/types/vectorized_mobject.py

@@ -74,7 +74,6 @@ class VMobject(Mobject):
             ('unit_normal', np.float32, (3,)),
             ("stroke_width", np.float32, (1,)),
             ("color", np.float32, (4,)),
-            ("joint_type", np.float32, (1,)),
             ("gloss", np.float32, (1,)),
             ("shadow", np.float32, (1,)),
         ]
@@ -877,17 +876,9 @@ class VMobject(Mobject):
             "bevel": 2,
             "miter": 3,
         }
-        # return {"joint_type": joint_type_to_code[self.joint_type]}
-        return {}  # TODO
+        return {"joint_type": joint_type_to_code[self.joint_type]}
 
     def get_stroke_shader_data(self):
-        joint_type_to_code = {
-            "auto": 0,
-            "round": 1,
-            "bevel": 2,
-            "miter": 3,
-        }
-
         rgbas = self.get_stroke_rgbas()
         if len(rgbas) > 1:
             rgbas = self.stretched_style_array_matching_points(rgbas)
@@ -908,7 +899,6 @@ class VMobject(Mobject):
         data["unit_normal"] = self.get_unit_normal_vector()
         data["stroke_width"][:, 0] = stroke_width
         data["color"] = rgbas
-        data["joint_type"] = joint_type_to_code[self.joint_type]
         data["gloss"] = self.gloss
         data["shadow"] = self.shadow
         return data

manimlib/shaders/quadratic_bezier_stroke_geom.glsl

@@ -8,6 +8,7 @@ uniform float aspect_ratio;
 uniform float focal_distance;
 uniform float anti_alias_width;
 uniform vec3 light_source_position;
+uniform float joint_type;
 
 in vec3 bp[3];
 in vec3 prev_bp[3];
@@ -16,7 +17,6 @@ in vec3 v_global_unit_normal[3];
 
 in vec4 v_color[3];
 in float v_stroke_width[3];
-in float v_joint_type[3];
 in float v_gloss[3];
 in float v_shadow[3];
 
@@ -95,7 +95,6 @@ void create_joint(float angle, vec3 unit_tan, float buff, float should_bevel,
                   vec3 static_c0, out vec3 changing_c0,
                   vec3 static_c1, out vec3 changing_c1){
     float shift;
-    float joint_type = v_joint_type[0];
     bool miter = (
         (joint_type == AUTO_JOINT && abs(angle) > 2.8 && should_bevel == 1) ||
         (joint_type == MITER_JOINT)
@@ -172,7 +171,6 @@ void set_adjascent_info(vec3 c0, vec3 tangent,
                         out float bevel,
                         out float angle
                         ){
-    float joint_type = v_joint_type[0];
     vec3 new_adj[3];
     float adj_degree = get_reduced_control_points(adj, new_adj);
     // Check if adj_degree is zero?

manimlib/shaders/quadratic_bezier_stroke_vert.glsl

@@ -10,7 +10,6 @@ in vec3 unit_normal;
 
 in float stroke_width;
 in vec4 color;
-in float joint_type;
 in float gloss;
 in float shadow;
 
@@ -22,7 +21,6 @@ out vec3 v_global_unit_normal;
 
 out float v_stroke_width;
 out vec4 v_color;
-out float v_joint_type;
 out float v_gloss;
 out float v_shadow;
 
@@ -41,7 +39,6 @@ void main(){
 
     v_stroke_width = STROKE_WIDTH_CONVERSION * stroke_width;
     v_color = color;
-    v_joint_type = joint_type;
     v_gloss = gloss;
     v_shadow = shadow;
 }