add grids panel

engine/node_image.cpp

@@ -5,11 +5,14 @@
 
 ui::Plane NodeImage::m_plane;
 Sampler NodeImage::m_sampler;
+Sampler NodeImage::m_sampler_mips;
 
 void NodeImage::static_init()
 {
     m_plane.create<1>(1, 1);
     m_sampler.create();
+    m_sampler_mips.create();
+    m_sampler_mips.set_filter(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
 }
 
 Node* NodeImage::clone_instantiate() const
@@ -51,6 +54,9 @@ void NodeImage::parse_attributes(kAttribute ka, const tinyxml2::XMLAttribute* at
     Node::parse_attributes(ka, attr);
     switch (ka)
     {
+    case kAttribute::Mips:
+        m_use_mipmaps = attr->BoolValue();
+        break;
     case kAttribute::Path:
         m_path = attr->Value();
         m_tex_id = const_hash(attr->Value());
@@ -75,7 +81,8 @@ void NodeImage::draw()
 {
     using namespace ui;
     TextureManager::get(m_tex_id).bind();
-    m_sampler.bind(0);
+    auto& sampler = m_use_mipmaps ? m_sampler_mips : m_sampler;
+    sampler.bind(0);
     glEnable(GL_BLEND);
     if (m_use_atlas)
     {
@@ -90,7 +97,7 @@ void NodeImage::draw()
     ui::ShaderManager::u_int(kShaderUniform::Tex, 0);
     ui::ShaderManager::u_mat4(kShaderUniform::MVP, m_mvp);
     m_plane.draw_fill();
-    m_sampler.unbind();
+    sampler.unbind();
     TextureManager::get(m_tex_id).unbind();
     glDisable(GL_BLEND);
 }