Split CNullDriver::checkImage into 2 functions to avoid some memory allocations in addTexture

Avoid creating dummy arrays when we work with non array images.
Just a minor speed improvement.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6329 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CNullDriver.cpp

@@ -441,10 +441,7 @@ ITexture* CNullDriver::addTexture(const core::dimension2d<u32>& size, const io::
 	IImage* image = new CImage(format, size);
 	ITexture* t = 0;
 
-	core::array<IImage*> imageArray(1);
+	if (checkImage(image->getColorFormat(), image->getDimension()))
-	imageArray.push_back(image);
-
-	if (checkImage(imageArray))
 	{
 		t = createDeviceDependentTexture(name, image);
 	}
@@ -473,19 +470,15 @@ ITexture* CNullDriver::addTexture(const io::path& name, IImage* image)
 
 	ITexture* t = 0;
 
-	core::array<IImage*> imageArray(1);
+	if (checkImage(image->getColorFormat(), image->getDimension()))
-	imageArray.push_back(image);
-
-	if (checkImage(imageArray))
 	{
 		t = createDeviceDependentTexture(name, image);
-	}
-
 		if (t)
 		{
 			addTexture(t);
 			t->drop();
 		}
+	}
 
 	return t;
 }
@@ -509,13 +502,12 @@ ITexture* CNullDriver::addTextureCubemap(const io::path& name, IImage* imagePosX
 	if (checkImage(imageArray))
 	{
 		t = createDeviceDependentTextureCubemap(name, imageArray);
-	}
-
 		if (t)
 		{
 			addTexture(t);
 			t->drop();
 		}
+	}
 
 	return t;
 }
@@ -1430,18 +1422,30 @@ bool CNullDriver::checkPrimitiveCount(u32 prmCount) const
 
 bool CNullDriver::checkImage(const core::array<IImage*>& image) const
 {
-	bool status = true;
-
 	if (image.size() > 0)
 	{
 		ECOLOR_FORMAT lastFormat = image[0]->getColorFormat();
 		core::dimension2d<u32> lastSize = image[0]->getDimension();
 
-		for (u32 i = 0; i < image.size() && status; ++i)
+		for (u32 i = 0; i < image.size(); ++i)
 		{
 			ECOLOR_FORMAT format = image[i]->getColorFormat();
 			core::dimension2d<u32> size = image[i]->getDimension();
 
+			if (format != lastFormat || size != lastSize)
+				return false;
+
+			if ( !checkImage(format, size) )
+				return false;
+		}
+	
+		return true;
+	}
+	return false;
+}
+
+bool CNullDriver::checkImage(ECOLOR_FORMAT format, const core::dimension2du& size) const
+{
 	switch (format)
 	{
 		case ECF_DXT1:
@@ -1452,12 +1456,12 @@ bool CNullDriver::checkImage(const core::array<IImage*>& image) const
 			if (!queryFeature(EVDF_TEXTURE_COMPRESSED_DXT))
 			{
 				os::Printer::log("DXT texture compression not available.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			else if (size.getOptimalSize(true, false) != size)
 			{
 				os::Printer::log("Invalid size of image for DXT texture, size of image must be power of two.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			break;
 		case ECF_PVRTC_RGB2:
@@ -1467,12 +1471,12 @@ bool CNullDriver::checkImage(const core::array<IImage*>& image) const
 			if (!queryFeature(EVDF_TEXTURE_COMPRESSED_PVRTC))
 			{
 				os::Printer::log("PVRTC texture compression not available.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			else if (size.getOptimalSize(true, false) != size)
 			{
 				os::Printer::log("Invalid size of image for PVRTC compressed texture, size of image must be power of two and squared.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			break;
 		case ECF_PVRTC2_ARGB2:
@@ -1480,14 +1484,14 @@ bool CNullDriver::checkImage(const core::array<IImage*>& image) const
 			if (!queryFeature(EVDF_TEXTURE_COMPRESSED_PVRTC2))
 			{
 				os::Printer::log("PVRTC2 texture compression not available.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			break;
 		case ECF_ETC1:
 			if (!queryFeature(EVDF_TEXTURE_COMPRESSED_ETC1))
 			{
 				os::Printer::log("ETC1 texture compression not available.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			break;
 		case ECF_ETC2_RGB:
@@ -1495,23 +1499,14 @@ bool CNullDriver::checkImage(const core::array<IImage*>& image) const
 			if (!queryFeature(EVDF_TEXTURE_COMPRESSED_ETC2))
 			{
 				os::Printer::log("ETC2 texture compression not available.", ELL_ERROR);
-					status = false;
+				return false;
 			}
 			break;
 		default:
 			break;
 	}
 
-			if (format != lastFormat || size != lastSize)
+	return true;
-				status = false;
-		}
-	}
-	else
-	{
-		status = false;
-	}
-
-	return status;
 }
 
 //! Enables or disables a texture creation flag.

source/Irrlicht/CNullDriver.h

@@ -707,6 +707,7 @@ namespace video
 		bool checkPrimitiveCount(u32 prmcnt) const;
 
 		bool checkImage(const core::array<IImage*>& image) const;
+		bool checkImage(ECOLOR_FORMAT format, const core::dimension2du& size) const;
 
 		// adds a material renderer and drops it afterwards. To be used for internal creation
 		s32 addAndDropMaterialRenderer(IMaterialRenderer* m);

tests/tests-last-passed-at.txt

@@ -1,4 +1,4 @@
 Tests finished. 72 tests of 72 passed.
 Compiled as DEBUG
-Test suite pass at GMT Wed Mar 30 21:02:37 2022
+Test suite pass at GMT Wed Apr 06 20:16:43 2022