Route colorize mask and slider shader setup through helpers

src/node_slider.cpp

@@ -38,9 +38,7 @@ void NodeSliderH::draw()
     glm::mat4 pos = glm::translate(glm::vec3(cur_pos , 0));
     auto mvp = m_proj * pos * scale;
 
-    ShaderManager::use(kShader::Color);
-    ShaderManager::u_mat4(kShaderUniform::MVP, mvp);
-    ShaderManager::u_vec4(kShaderUniform::Col, { 0, 0, 0, 1 });
+    pp::panopainter::configure_legacy_slider_color_shader(mvp);
     m_plane.draw_fill();
 }
 
@@ -162,10 +160,9 @@ glm::vec4 NodeSliderHue::get_hue()
 
 void NodeSliderHue::draw()
 {
-    ShaderManager::use(kShader::ColorHue);
-    ShaderManager::u_mat4(kShaderUniform::MVP, m_mvp * glm::scale(glm::vec3(1, -1, 1)));
-    //ShaderManager::u_vec4(kShaderUniform::Col, m_color);
-    ShaderManager::u_int(kShaderUniform::Direction, m_comp); // set vertical
+    pp::panopainter::configure_legacy_slider_hue_shader(
+        m_mvp * glm::scale(glm::vec3(1, -1, 1)),
+        m_comp);
     m_plane.draw_fill();
     NodeBorder::m_color = glm::vec4(0);
     NodeSliderH::draw();