Tech ENABLE_GL_CORE_PROFILE - Use thick_lines shader where needed

Fixed conflicts during rebase with master

resources/shaders/140/thick_lines.fs

@@ -2,7 +2,7 @@
 
 // see as reference: https://github.com/mhalber/Lines/blob/master/geometry_shader_lines.h
 
-const vec2 aa_radius = vec2(1.5);
+const vec2 aa_radius = vec2(1.0);
 
 uniform vec4 uniform_color;
 

resources/shaders/140/thick_lines.gs

@@ -5,7 +5,7 @@
 layout(lines) in;
 layout(triangle_strip, max_vertices = 4) out;
 
-const vec2 aa_radius = vec2(1.5);
+const vec2 aa_radius = vec2(1.0);
 
 uniform vec2 viewport_size;
 uniform float width;
@@ -20,10 +20,10 @@ void main()
 	float u_height       = viewport_size[1];
 	float u_aspect_ratio = u_height / u_width;
 
-	vec2 ndc_a = gl_in[0].gl_Position.xy / gl_in[0].gl_Position.w;
-	vec2 ndc_b = gl_in[1].gl_Position.xy / gl_in[1].gl_Position.w;
+	vec2 ndc_0 = gl_in[0].gl_Position.xy / gl_in[0].gl_Position.w;
+	vec2 ndc_1 = gl_in[1].gl_Position.xy / gl_in[1].gl_Position.w;
 
-	vec2 line_vector = ndc_b - ndc_a;
+	vec2 line_vector = ndc_1 - ndc_0;
 	vec2 viewport_line_vector = line_vector * viewport_size;
 	vec2 dir = normalize(viewport_line_vector);
 	vec2 normal_dir = vec2(-dir.y, dir.x);
@@ -38,19 +38,19 @@ void main()
 	float half_line_length = line_length * 0.5;
 
 	uv = vec2(-half_line_width, half_line_length);
-	gl_Position = vec4((ndc_a + normal - extension) * gl_in[0].gl_Position.w, gl_in[0].gl_Position.zw);
+	gl_Position = vec4((ndc_0 + normal - extension) * gl_in[0].gl_Position.w, gl_in[0].gl_Position.zw);
 	EmitVertex();
 
 	uv = vec2(-half_line_width, -half_line_length);
-	gl_Position = vec4((ndc_a - normal - extension) * gl_in[0].gl_Position.w, gl_in[0].gl_Position.zw);
+	gl_Position = vec4((ndc_0 - normal - extension) * gl_in[0].gl_Position.w, gl_in[0].gl_Position.zw);
 	EmitVertex();
 
 	uv = vec2(half_line_width, half_line_length);
-	gl_Position = vec4((ndc_b + normal + extension) * gl_in[1].gl_Position.w, gl_in[1].gl_Position.zw);
+	gl_Position = vec4((ndc_1 + normal + extension) * gl_in[1].gl_Position.w, gl_in[1].gl_Position.zw);
 	EmitVertex();
 
 	uv = vec2(half_line_width, -half_line_length);
-	gl_Position = vec4((ndc_b - normal + extension) * gl_in[1].gl_Position.w, gl_in[1].gl_Position.zw);
+	gl_Position = vec4((ndc_1 - normal + extension) * gl_in[1].gl_Position.w, gl_in[1].gl_Position.zw);
 	EmitVertex();
 
 	EndPrimitive();