Shaders: using attachShaders() everywhere.

src/Magnum/Shaders/DistanceFieldVector.cpp

@@ -59,8 +59,7 @@ template<UnsignedInt dimensions> DistanceFieldVector<dimensions>::DistanceFieldV
 
     CORRADE_INTERNAL_ASSERT_OUTPUT(Shader::compile({frag, vert}));
 
-    AbstractShaderProgram::attachShader(frag);
+    AbstractShaderProgram::attachShaders({frag, vert});
-    AbstractShaderProgram::attachShader(vert);
 
     #ifndef MAGNUM_TARGET_GLES
     if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_attrib_location>(version))

src/Magnum/Shaders/Flat.cpp

@@ -64,8 +64,7 @@ template<UnsignedInt dimensions> Flat<dimensions>::Flat(const Flags flags): tran
 
     CORRADE_INTERNAL_ASSERT_OUTPUT(Shader::compile({vert, frag}));
 
-    attachShader(vert);
+    attachShaders({vert, frag});
-    attachShader(frag);
 
     #ifndef MAGNUM_TARGET_GLES
     if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_attrib_location>(version))

src/Magnum/Shaders/MeshVisualizer.cpp

@@ -87,8 +87,7 @@ MeshVisualizer::MeshVisualizer(const Flags flags): flags(flags), transformationP
     #endif
         Shader::compile({vert, frag});
 
-    attachShader(vert);
+    attachShaders({vert, frag});
-    attachShader(frag);
     #ifndef MAGNUM_TARGET_GLES
     if(geom) attachShader(*geom);
     #endif

src/Magnum/Shaders/Phong.cpp

@@ -66,8 +66,7 @@ Phong::Phong(const Flags flags): transformationMatrixUniform(0), projectionMatri
 
     CORRADE_INTERNAL_ASSERT_OUTPUT(Shader::compile({vert, frag}));
 
-    attachShader(vert);
+    attachShaders({vert, frag});
-    attachShader(frag);
 
     #ifndef MAGNUM_TARGET_GLES
     if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_attrib_location>(version))

src/Magnum/Shaders/Vector.cpp

@@ -59,8 +59,7 @@ template<UnsignedInt dimensions> Vector<dimensions>::Vector(): transformationPro
 
     CORRADE_INTERNAL_ASSERT_OUTPUT(Shader::compile({vert, frag}));
 
-    AbstractShaderProgram::attachShader(vert);
+    AbstractShaderProgram::attachShaders({vert,  frag});
-    AbstractShaderProgram::attachShader(frag);
 
     #ifndef MAGNUM_TARGET_GLES
     if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_attrib_location>(version))

src/Magnum/Shaders/VertexColor.cpp

@@ -59,8 +59,7 @@ template<UnsignedInt dimensions> VertexColor<dimensions>::VertexColor(): transfo
 
     CORRADE_INTERNAL_ASSERT_OUTPUT(Shader::compile({vert, frag}));
 
-    attachShader(vert);
+    attachShaders({vert, frag});
-    attachShader(frag);
 
     #ifndef MAGNUM_TARGET_GLES
     if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::explicit_attrib_location>(version))