GRAPHICS: Add TextureManager::getInvisible()

xoreos · Jan 21, 2014 · 02266eb · 02266eb
1 parent 0330701
commit 02266eb
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Showing 2 changed files with 33 additions and 0 deletions.
diff --git a/src/graphics/textureman.cpp b/src/graphics/textureman.cpp
@@ -185,6 +185,20 @@ Ogre::TexturePtr TextureManager::get(const Common::UString &name) {
 	return texture;
 }
 
+Ogre::TexturePtr TextureManager::getInvisible() {
+	if (!Common::isMainThread()) {
+		Events::MainThreadFunctor<Ogre::TexturePtr> functor(boost::bind(&TextureManager::getInvisible, this));
+
+		return RequestMan.callInMainThread(functor);
+	}
+
+	Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().getByName("xoreos/invisible");
+	if (!texture.isNull())
+		return texture;
+
+	return createInvisible();
+}
+
 ImageDecoder *TextureManager::createImage(const Common::UString &name) {
 	// Get the image resource
 	::Aurora::FileType type;
@@ -336,6 +350,21 @@ void TextureManager::convert(Ogre::TexturePtr &texture, const ImageDecoder &imag
 	}
 }
 
+Ogre::TexturePtr TextureManager::createInvisible() {
+	Ogre::TexturePtr texture = Ogre::TextureManager::getSingleton().createManual("xoreos/invisible", "General",
+			Ogre::TEX_TYPE_2D, 1, 1, 1, Ogre::PF_BYTE_BGRA, Ogre::TU_STATIC_WRITE_ONLY);
+
+	Ogre::HardwarePixelBufferSharedPtr buffer = texture->getBuffer(0, 0);
+	buffer->lock(Ogre::HardwareBuffer::HBL_WRITE_ONLY);
+	const Ogre::PixelBox &pb = buffer->getCurrentLock();
+
+	memset(pb.data, 0, Ogre::PixelUtil::getMemorySize(pb.getWidth(), pb.getHeight(), pb.getDepth(), pb.format));
+
+	buffer->unlock();
+
+	return texture;
+}
+
 bool TextureManager::dumpTGA(const Common::UString &name, const Common::UString &fileName) {
 	ImageDecoder *image = 0;
 

diff --git a/src/graphics/textureman.h b/src/graphics/textureman.h
@@ -82,6 +82,8 @@ class TextureManager : public Common::Singleton<TextureManager> {
 	/** Get/Load a texture. */
 	Ogre::TexturePtr get(const Common::UString &name);
 
+	Ogre::TexturePtr getInvisible();
+
 	/** Get the properties of a texture. */
 	const TextureProperties &getProperties(const Common::UString &name);
 	/** Get the properties of a texture. */
@@ -99,6 +101,8 @@ class TextureManager : public Common::Singleton<TextureManager> {
 	Ogre::TexturePtr create(const Common::UString &name);
 	Ogre::TexturePtr create(const Common::UString &name, const ImageDecoder &image);
 
+	Ogre::TexturePtr createInvisible();
+
 	ImageDecoder *createImage(const Common::UString &name);
 
 	void convert(Ogre::TexturePtr &texture, const ImageDecoder &image, int mipMaps);