texture border not supported on mobile

src/canvas.cpp

@@ -1082,16 +1082,17 @@ bool Canvas::create(int width, int height)
 #if defined(__IOS__) || defined(__ANDROID__)
         m_tmp[i].create(width, height, -1, GL_RGBA8);
         m_tex[i].create(width, height, GL_RGBA8);
+        m_sampler_brush.create();
 #else
         m_tmp[i].create(width, height, -1, GL_RGBA32F);
         m_tex[i].create(width, height, GL_RGBA32F);
+        m_sampler_brush.create(GL_LINEAR, GL_CLAMP_TO_BORDER);
 #endif
         m_tex2[i].create(width, height, GL_RGBA8); // TODO: destroy before recreating
     }
     m_sampler.create(GL_NEAREST);
     m_sampler.create(GL_LINEAR);
     m_sampler_nearest.create(GL_NEAREST);
-    m_sampler_brush.create(GL_LINEAR, GL_CLAMP_TO_BORDER);
     m_sampler_brush.set_filter(GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
     m_sampler_brush.set_border({ 1, 1, 1, 1 });
     m_sampler_bg.create(GL_NEAREST);

src/texture.cpp

@@ -136,7 +136,7 @@ void Sampler::set_filter(GLint filter_min, GLint filter_mag)
 }
 void Sampler::set_border(glm::vec4 rgba)
 {
-#if USE_SAMPLER
+#if USE_SAMPLER && !defined(__IOS__) && !defined(__ANDROID__)
     glSamplerParameterfv(id, GL_TEXTURE_BORDER_COLOR, glm::value_ptr(rgba));
 #endif // USE_SAMPLER
 }