Removed parameter-less clear() from Framebuffer.

Automatic behavior could cause harm, as the stencil/depth test could be
temporarily disabled for some parts of the scene (but enabled for the
rest), causing clear() to leave stencil/depth buffer untouched.

src/Framebuffer.cpp

@@ -17,21 +17,6 @@
 
 namespace Magnum {
 
-Framebuffer::ClearMask Framebuffer::clearMask = Framebuffer::Clear::Color;
-
-void Framebuffer::setFeature(Feature feature, bool enabled) {
-    /* Enable or disable the feature */
-    enabled ? glEnable(static_cast<GLenum>(feature)) : glDisable(static_cast<GLenum>(feature));
-
-    /* Update clear mask, if needed */
-    ClearMask clearMaskChange;
-    if(feature == Feature::DepthTest) clearMaskChange = Clear::Depth;
-    else if(feature == Feature::StencilTest) clearMaskChange = Clear::Stencil;
-    else return;
-
-    enabled ? clearMask |= clearMaskChange : clearMask &= ~clearMaskChange;
-}
-
 #ifndef MAGNUM_TARGET_GLES
 void Framebuffer::mapDefaultForDraw(std::initializer_list<DefaultDrawAttachment> attachments) {
     GLenum* _attachments = new GLenum[attachments.size()];

src/Framebuffer.h

@@ -86,7 +86,9 @@ class MAGNUM_EXPORT Framebuffer {
         };
 
         /** @brief Set feature */
-        static void setFeature(Feature feature, bool enabled);
+        inline static void setFeature(Feature feature, bool enabled) {
+            enabled ? glEnable(static_cast<GLenum>(feature)) : glDisable(static_cast<GLenum>(feature));
+        }
 
         /**
          * @brief Set viewport size
@@ -115,21 +117,10 @@ class MAGNUM_EXPORT Framebuffer {
 
         typedef Corrade::Containers::EnumSet<Clear, GLbitfield> ClearMask; /**< @brief Mask for clearing */
 
-        /**
-         * @brief Clear framebuffer
-         *
-         * Clears color buffer, depth and stencil buffer in currently active
-         * framebuffer. If depth or stencil test is not enabled, it doesn't
-         * clear these buffers.
-         *
-         * @see setFeature(), clear(ClearMask)
-         */
-        inline static void clear() { glClear(static_cast<GLbitfield>(clearMask)); }
-
         /**
          * @brief Clear specified buffers in framebuffer
          *
-         * @see clear()
+         * @see clear(), setClearColor(), setClearDepth(), setClearStencil()
          * @todo Clearing only given draw buffer
          */
         inline static void clear(ClearMask mask) { glClear(static_cast<GLbitfield>(mask)); }
@@ -1108,8 +1099,6 @@ class MAGNUM_EXPORT Framebuffer {
         /*@}*/
 
     private:
-        static ClearMask clearMask;
-
         GLuint framebuffer;
 };