diff --git a/glslang b/glslang
index c8720ad..cb9c7d7 160000
--- a/glslang
+++ b/glslang
@@ -1 +1 @@
-Subproject commit c8720ad209ba609f80a736dc777887c805b7b2f5
+Subproject commit cb9c7d7bd57c09fd73c5aadfc881c0140b64fcdb
diff --git a/include/boo/graphicsdev/IGraphicsCommandQueue.hpp b/include/boo/graphicsdev/IGraphicsCommandQueue.hpp
index e84a530..f41bc81 100644
--- a/include/boo/graphicsdev/IGraphicsCommandQueue.hpp
+++ b/include/boo/graphicsdev/IGraphicsCommandQueue.hpp
@@ -32,7 +32,7 @@ struct IGraphicsCommandQueue
     virtual void drawInstances(size_t start, size_t count, size_t instCount)=0;
     virtual void drawInstancesIndexed(size_t start, size_t count, size_t instCount)=0;
 
-    virtual void resolveBindTexture(ITextureR* texture, const SWindowRect& rect, bool tlOrigin)=0;
+    virtual void resolveBindTexture(ITextureR* texture, const SWindowRect& rect, bool tlOrigin, bool color, bool depth)=0;
     virtual void resolveDisplay(ITextureR* source)=0;
     virtual void execute()=0;
 
diff --git a/include/boo/graphicsdev/Metal.hpp b/include/boo/graphicsdev/Metal.hpp
index 4d6f95c..2021dd0 100644
--- a/include/boo/graphicsdev/Metal.hpp
+++ b/include/boo/graphicsdev/Metal.hpp
@@ -49,7 +49,8 @@ public:
     ITextureSA* newStaticArrayTexture(size_t width, size_t height, size_t layers, TextureFormat fmt,
                                       const void* data, size_t sz);
     ITextureD* newDynamicTexture(size_t width, size_t height, TextureFormat fmt);
-    ITextureR* newRenderTexture(size_t width, size_t height);
+    ITextureR* newRenderTexture(size_t width, size_t height,
+                                bool enableShaderColorBinding, bool enableShaderDepthBinding);
 
     bool bindingNeedsVertexFormat() const {return false;}
     IVertexFormat* newVertexFormat(size_t elementCount, const VertexElementDescriptor* elements);
diff --git a/lib/graphicsdev/GL.cpp b/lib/graphicsdev/GL.cpp
index bd20f9b..86ac46e 100644
--- a/lib/graphicsdev/GL.cpp
+++ b/lib/graphicsdev/GL.cpp
@@ -767,6 +767,8 @@ struct GLCommandQueue : IGraphicsCommandQueue
             };
         };
         const ITextureR* resolveTex;
+        bool resolveColor : 1;
+        bool resolveDepth : 1;
         Command(Op op) : m_op(op) {}
     };
     std::vector<Command> m_cmdBufs[3];
@@ -980,15 +982,15 @@ struct GLCommandQueue : IGraphicsCommandQueue
                     const GLTextureR* tex = static_cast<const GLTextureR*>(cmd.resolveTex);
                     GLenum target = (tex->m_samples > 1) ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D;
                     glBindFramebuffer(GL_READ_FRAMEBUFFER, tex->m_fbo);
-                    glReadBuffer(GL_BACK);
+                    //glReadBuffer(GL_FRONT);
                     glActiveTexture(GL_TEXTURE9);
-                    if (tex->m_bindTexs[0])
+                    if (cmd.resolveColor && tex->m_bindTexs[0])
                     {
                         glBindTexture(target, tex->m_bindTexs[0]);
                         glCopyTexSubImage2D(target, 0, cmd.rect.location[0], cmd.rect.location[1],
                                             cmd.rect.location[0], cmd.rect.location[1], cmd.rect.size[0], cmd.rect.size[1]);
                     }
-                    if (tex->m_bindTexs[1])
+                    if (cmd.resolveDepth && tex->m_bindTexs[1])
                     {
                         glBindTexture(target, tex->m_bindTexs[1]);
                         glCopyTexSubImage2D(target, 0, cmd.rect.location[0], cmd.rect.location[1],
@@ -1134,14 +1136,16 @@ struct GLCommandQueue : IGraphicsCommandQueue
         cmds.back().instCount = instCount;
     }
 
-    void resolveBindTexture(ITextureR* texture, const SWindowRect& rect, bool tlOrigin)
+    void resolveBindTexture(ITextureR* texture, const SWindowRect& rect, bool tlOrigin, bool color, bool depth)
     {
         std::vector<Command>& cmds = m_cmdBufs[m_fillBuf];
         cmds.emplace_back(Command::Op::ResolveBindTexture);
         cmds.back().resolveTex = texture;
         cmds.back().rect = rect;
+        cmds.back().resolveColor = color;
+        cmds.back().resolveDepth = depth;
         if (tlOrigin)
-            cmds.back().rect.location[1] = static_cast<GLTextureR*>(texture)->m_height - rect.location[1];
+            cmds.back().rect.location[1] = static_cast<GLTextureR*>(texture)->m_height - rect.location[1] - rect.size[1];
     }
 
     void resolveDisplay(ITextureR* source)
diff --git a/lib/graphicsdev/Metal.mm b/lib/graphicsdev/Metal.mm
index c5ce392..a555a60 100644
--- a/lib/graphicsdev/Metal.mm
+++ b/lib/graphicsdev/Metal.mm
@@ -678,6 +678,11 @@ struct MetalCommandQueue : IGraphicsCommandQueue
                        instanceCount:instCount];
     }
 
+    void resolveBindTexture(ITextureR* texture, const SWindowRect& rect, bool tlOrigin, bool color, bool depth)
+    {
+
+    }
+
     MetalTextureR* m_needsDisplay = nullptr;
     void resolveDisplay(ITextureR* source)
     {
@@ -892,7 +897,8 @@ ITextureD* MetalDataFactory::newDynamicTexture(size_t width, size_t height, Text
     m_deferredData->m_DTexs.emplace_back(retval);
     return retval;
 }
-ITextureR* MetalDataFactory::newRenderTexture(size_t width, size_t height)
+ITextureR* MetalDataFactory::newRenderTexture(size_t width, size_t height,
+                                              bool enableShaderColorBinding, bool enableShaderDepthBinding)
 {
     MetalTextureR* retval = new MetalTextureR(m_ctx, width, height, m_sampleCount);
     if (!m_deferredData.get())