GL: added Framebuffer::Status::IncompleteDimensions.

Sigh, NVidia.

doc/changelog.dox

@@ -53,6 +53,12 @@ See also:
 
 @subsection changelog-latest-changes Changes and improvements
 
+@subsubsection changelog-latest-changes-gl GL library
+
+-   Added @ref GL::Framebuffer::Status::IncompleteDimensions for ES2. This enum
+    isn't available on ES3 or desktop GL, but NVidia drivers are known to emit
+    it, which is why it got added.
+
 @subsubsection changelog-latest-changes-meshtools MeshTools library
 
 -   Added a `--bounds` option to @ref magnum-sceneconverter "magnum-sceneconverter",

src/Magnum/GL/Framebuffer.cpp

@@ -405,6 +405,9 @@ Debug& operator<<(Debug& debug, const Framebuffer::Status value) {
         _c(Complete)
         _c(IncompleteAttachment)
         _c(IncompleteMissingAttachment)
+        #ifdef MAGNUM_TARGET_GLES2
+        _c(IncompleteDimensions)
+        #endif
         #ifndef MAGNUM_TARGET_GLES
         _c(IncompleteDrawBuffer)
         _c(IncompleteReadBuffer)

src/Magnum/GL/Framebuffer.h

@@ -280,6 +280,17 @@ class MAGNUM_GL_EXPORT Framebuffer: public AbstractFramebuffer, public AbstractO
             /** The framebuffer does not have at least one image attached to it */
             IncompleteMissingAttachment = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT,
 
+            #if defined(MAGNUM_TARGET_GLES2) || defined(DOXYGEN_GENERATING_OUTPUT)
+            /**
+             * The attached images have different sizes.
+             * @requires_gles20 This restriction is only present in OpenGL ES
+             *      2.0, not in desktop GL or OpenGL ES 3.0 anymore. Note that,
+             *      however, NVidia desktop drivers are known to emit this
+             *      value (@cpp 0x8CD9 @ce) in some cases.
+             */
+            IncompleteDimensions = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS,
+            #endif
+
             #ifndef MAGNUM_TARGET_GLES
             /** @todo Why exactly this is not needed? */
             /**