diff --git a/src/OpenColorIO/CMakeLists.txt b/src/OpenColorIO/CMakeLists.txt
index babc5b213e..7343b919cc 100755
--- a/src/OpenColorIO/CMakeLists.txt
+++ b/src/OpenColorIO/CMakeLists.txt
@@ -152,10 +152,12 @@ if(NOT WIN32)
 
     # Install the pkg-config file.
 
+    include(GNUInstallDirs)
+
     set(prefix ${CMAKE_INSTALL_PREFIX})
     set(exec_prefix "\${prefix}")
     set(libdir "\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
-    set(includedir "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
+    set(includedir "\${exec_prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
     configure_file(res/OpenColorIO.pc.in ${CMAKE_CURRENT_BINARY_DIR}/OpenColorIO.pc @ONLY)
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/OpenColorIO.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
 endif()
diff --git a/src/apps/ociochecklut/main.cpp b/src/apps/ociochecklut/main.cpp
index 9175c240e9..882f2aea12 100644
--- a/src/apps/ociochecklut/main.cpp
+++ b/src/apps/ociochecklut/main.cpp
@@ -185,6 +185,7 @@ int main (int argc, const char* argv[])
     bool verbose       = false;
     bool help          = false;
     bool test          = false;
+    bool invlut        = false;
     bool usegpu        = false;
     bool usegpuLegacy  = false;
     bool outputgpuInfo = false;
@@ -197,8 +198,8 @@ int main (int argc, const char* argv[])
                "-t", &test, "Test a set a predefined RGB values",
                "-v", &verbose, "Verbose",
                "--help", &help, "Print help message",
-               "-t", &test, "Test a set a predefined RGB values\n",
-               "--gpu", &usegpu, "Use GPU instead of CPU\n",
+               "--inv", &invlut, "Apply LUT in inverse direction",
+               "--gpu", &usegpu, "Use GPU instead of CPU",
                "--gpulegacy", &usegpuLegacy, "Use the legacy (i.e. baked) GPU color processing "
                                              "instead of the CPU one (--gpu is ignored)",
                "--gpuinfo", &outputgpuInfo, "Output the OCIO shader program",
@@ -257,6 +258,7 @@ int main (int argc, const char* argv[])
         OCIO::FileTransformRcPtr t = OCIO::FileTransform::Create();
         t->setSrc(inputfile.c_str());
         t->setInterpolation(OCIO::INTERP_BEST);
+        t->setDirection(invlut ? OCIO::TRANSFORM_DIR_INVERSE : OCIO::TRANSFORM_DIR_FORWARD);
 
         ProcessorWrapper proc(outputgpuInfo);
         try
diff --git a/src/libutils/oglapphelpers/oglapp.cpp b/src/libutils/oglapphelpers/oglapp.cpp
index 644606d01e..4b0888cfb7 100644
--- a/src/libutils/oglapphelpers/oglapp.cpp
+++ b/src/libutils/oglapphelpers/oglapp.cpp
@@ -67,8 +67,10 @@ void OglApp::initImage(int imgWidth, int imgHeight, Components comp, const float
 
 void OglApp::updateImage(const float * image)
 {
-    const GLenum format = m_components == COMPONENTS_RGB ? GL_RGB : GL_RGBA;
+    glActiveTexture(GL_TEXTURE0);
     glBindTexture(GL_TEXTURE_2D, m_imageTexID);
+
+    const GLenum format = m_components == COMPONENTS_RGB ? GL_RGB : GL_RGBA;
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, m_imageWidth, m_imageHeight, 0,
                  format, GL_FLOAT, &image[0]);
 }
@@ -111,6 +113,12 @@ void OglApp::redisplay()
         std::swap(pts[1], pts[3]);
     }
 
+    // Update the uniform values in case one changed.
+    if (m_oglBuilder)
+    {
+        m_oglBuilder->useAllUniforms();
+    }
+
     glEnable(GL_TEXTURE_2D);
         glClearColor(0.2f, 0.2f, 0.2f, 0.0f);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -214,14 +222,6 @@ void OglApp::setShader(GpuShaderDescRcPtr & shaderDesc)
     m_oglBuilder->useAllUniforms();
 }
 
-void OglApp::updateUniforms()
-{
-    if (m_oglBuilder)
-    {
-        m_oglBuilder->useAllUniforms();
-    }
-}
-
 void OglApp::printGLInfo() const noexcept
 {
     std::cout << std::endl
diff --git a/src/libutils/oglapphelpers/oglapp.h b/src/libutils/oglapphelpers/oglapp.h
index ef1ba96d15..2919fd82cf 100644
--- a/src/libutils/oglapphelpers/oglapp.h
+++ b/src/libutils/oglapphelpers/oglapp.h
@@ -103,9 +103,6 @@ class OglApp
     // application it should be called by the glutReshapeFunc callback using the windows size.
     void reshape(int width, int height);
 
-    // To be called after changing dynamic properties and before calling redisplay.
-    void updateUniforms();
-
     // Process the image.
     void virtual redisplay();
 
diff --git a/tests/gpu/GPUUnitTest.cpp b/tests/gpu/GPUUnitTest.cpp
index ca0b587346..155af81985 100644
--- a/tests/gpu/GPUUnitTest.cpp
+++ b/tests/gpu/GPUUnitTest.cpp
@@ -571,8 +571,6 @@ int main(int, char **)
                     {
                         // Call the retest callback.
                         test->retestSetup(idx - 1);
-                        // Update uniforms with dynamic properties.
-                        app->updateUniforms();
                     }
 
                     // Process the image texture into the rendering buffer.