minetest/build/android/patches/irrlicht-texturehack.patch

--- irrlicht/source/Irrlicht/COGLESTexture.cpp.orig	2014-06-22 17:01:13.266568869 +0200
+++ irrlicht/source/Irrlicht/COGLESTexture.cpp	2014-06-22 17:03:59.298572810 +0200
@@ -366,112 +366,140 @@
 	void(*convert)(const void*, s32, void*) = 0;
 	getFormatParameters(ColorFormat, InternalFormat, filtering, PixelFormat, PixelType, convert);
 
-	// make sure we don't change the internal format of existing images
-	if (!newTexture)
-		InternalFormat = oldInternalFormat;
-
-    Driver->setActiveTexture(0, this);
-
-	if (Driver->testGLError())
-		os::Printer::log("Could not bind Texture", ELL_ERROR);
-
-	// mipmap handling for main texture
-	if (!level && newTexture)
-	{
-		// auto generate if possible and no mipmap data is given
-		if (!IsCompressed && HasMipMaps && !mipmapData && Driver->queryFeature(EVDF_MIP_MAP_AUTO_UPDATE))
-		{
-			if (Driver->getTextureCreationFlag(ETCF_OPTIMIZED_FOR_SPEED))
-				glHint(GL_GENERATE_MIPMAP_HINT, GL_FASTEST);
-			else if (Driver->getTextureCreationFlag(ETCF_OPTIMIZED_FOR_QUALITY))
-				glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
-			else
-				glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE);
+	bool retry = false;
+	
+	do { 
+		if (retry) {
+			InternalFormat = GL_RGBA;
+			PixelFormat = GL_RGBA;
+			convert = CColorConverter::convert_A8R8G8B8toA8B8G8R8;
+ 		}
+		// make sure we don't change the internal format of existing images
+		if (!newTexture)
+			InternalFormat = oldInternalFormat;
 
-            glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
-			AutomaticMipmapUpdate=true;
-		}
+		Driver->setActiveTexture(0, this);
 
-		// enable bilinear filter without mipmaps
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
-	}
+		if (Driver->testGLError())
+			os::Printer::log("Could not bind Texture", ELL_ERROR);
 
-	// now get image data and upload to GPU
+		// mipmap handling for main texture
+		if (!level && newTexture)
+		{
+			// auto generate if possible and no mipmap data is given
+			if (!IsCompressed && HasMipMaps && !mipmapData && Driver->queryFeature(EVDF_MIP_MAP_AUTO_UPDATE))
+			{
+				if (Driver->getTextureCreationFlag(ETCF_OPTIMIZED_FOR_SPEED))
+					glHint(GL_GENERATE_MIPMAP_HINT, GL_FASTEST);
+				else if (Driver->getTextureCreationFlag(ETCF_OPTIMIZED_FOR_QUALITY))
+					glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
+				else
+					glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE);
+
+				glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
+				AutomaticMipmapUpdate=true;
+			}
+
+			// enable bilinear filter without mipmaps
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
+		}
 
-	u32 compressedImageSize = IImage::getCompressedImageSize(ColorFormat, image->getDimension().Width, image->getDimension().Height);
+		// now get image data and upload to GPU
 
-	void* source = image->lock();
+		u32 compressedImageSize = IImage::getCompressedImageSize(ColorFormat, image->getDimension().Width, image->getDimension().Height);
 
-	IImage* tmpImage = 0;
+		void* source = image->lock();
 
-	if (convert)
-	{
-		tmpImage = new CImage(image->getColorFormat(), image->getDimension());
-		void* dest = tmpImage->lock();
-		convert(source, image->getDimension().getArea(), dest);
-		image->unlock();
-		source = dest;
-	}
+		IImage* tmpImage = 0;
 
-	if (newTexture)
-	{
-		if (IsCompressed)
+		if (convert)
 		{
-			glCompressedTexImage2D(GL_TEXTURE_2D, 0, InternalFormat, image->getDimension().Width,
-				image->getDimension().Height, 0, compressedImageSize, source);
+			tmpImage = new CImage(image->getColorFormat(), image->getDimension());
+			void* dest = tmpImage->lock();
+			convert(source, image->getDimension().getArea(), dest);
+			image->unlock();
+			source = dest;
 		}
-		else
-			glTexImage2D(GL_TEXTURE_2D, level, InternalFormat, image->getDimension().Width,
-				image->getDimension().Height, 0, PixelFormat, PixelType, source);
-	}
-	else
-	{
-		if (IsCompressed)
+
+		if (newTexture)
 		{
-			glCompressedTexSubImage2D(GL_TEXTURE_2D, level, 0, 0, image->getDimension().Width,
-				image->getDimension().Height, PixelFormat, compressedImageSize, source);
+			if (IsCompressed)
+			{
+				glCompressedTexImage2D(GL_TEXTURE_2D, 0, InternalFormat, image->getDimension().Width,
+					image->getDimension().Height, 0, compressedImageSize, source);
+			}
+			else
+				glTexImage2D(GL_TEXTURE_2D, level, InternalFormat, image->getDimension().Width,
+					image->getDimension().Height, 0, PixelFormat, PixelType, source);
 		}
 		else
-			glTexSubImage2D(GL_TEXTURE_2D, level, 0, 0, image->getDimension().Width,
-				image->getDimension().Height, PixelFormat, PixelType, source);
-	}
-
-	if (convert)
-	{
-		tmpImage->unlock();
-		tmpImage->drop();
-	}
-	else
-		image->unlock();
-
-	if (!level && newTexture)
-	{
-		if (IsCompressed && !mipmapData)
 		{
-			if (image->hasMipMaps())
-				mipmapData = static_cast<u8*>(image->lock())+compressedImageSize;
+			if (IsCompressed)
+			{
+				glCompressedTexSubImage2D(GL_TEXTURE_2D, level, 0, 0, image->getDimension().Width,
+					image->getDimension().Height, PixelFormat, compressedImageSize, source);
+			}
 			else
-				HasMipMaps = false;
+				glTexSubImage2D(GL_TEXTURE_2D, level, 0, 0, image->getDimension().Width,
+					image->getDimension().Height, PixelFormat, PixelType, source);
 		}
 
-		regenerateMipMapLevels(mipmapData);
-
-		if (HasMipMaps) // might have changed in regenerateMipMapLevels
+		if (convert)
 		{
-			// enable bilinear mipmap filter
-			GLint filteringMipMaps = GL_LINEAR_MIPMAP_NEAREST;
-
-			if (filtering != GL_LINEAR)
-				filteringMipMaps = GL_NEAREST_MIPMAP_NEAREST;
+			tmpImage->unlock();
+			tmpImage->drop();
+		}
+		else
+			image->unlock();
+		
+		if (glGetError() != GL_NO_ERROR) {
+			static bool warned = false;
+			if ((!retry) && (ColorFormat == ECF_A8R8G8B8)) {
+
+				if (!warned) {
+					os::Printer::log("Your driver claims to support GL_BGRA but fails on trying to upload a texture, converting to GL_RGBA and trying again", ELL_ERROR);
+					warned = true;
+				}
+			}
+			else if (retry) {
+				os::Printer::log("Neither uploading texture as GL_BGRA nor, converted one using GL_RGBA succeeded", ELL_ERROR);
+			}
+			retry = !retry;
+			continue;
+		} else {
+			retry = false;
+		}
 
-			glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filteringMipMaps);
-			glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
+		if (!level && newTexture)
+		{
+			if (IsCompressed && !mipmapData)
+			{
+				if (image->hasMipMaps())
+					mipmapData = static_cast<u8*>(image->lock())+compressedImageSize;
+				else
+					HasMipMaps = false;
+			}
+
+			regenerateMipMapLevels(mipmapData);
+
+			if (HasMipMaps) // might have changed in regenerateMipMapLevels
+			{
+				// enable bilinear mipmap filter
+				GLint filteringMipMaps = GL_LINEAR_MIPMAP_NEAREST;
+
+				if (filtering != GL_LINEAR)
+					filteringMipMaps = GL_NEAREST_MIPMAP_NEAREST;
+
+				glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filteringMipMaps);
+				glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
+			}
 		}
-	}
 
-	if (Driver->testGLError())
-		os::Printer::log("Could not glTexImage2D", ELL_ERROR);
+		if (Driver->testGLError())
+			os::Printer::log("Could not glTexImage2D", ELL_ERROR);
+	}
+	while(retry);
 }
 
 
--- irrlicht/source/Irrlicht/COGLESTexture.cpp.orig	2014-06-25 00:28:50.820501856 +0200
+++ irrlicht/source/Irrlicht/COGLESTexture.cpp	2014-06-25 00:08:37.712544692 +0200
@@ -422,6 +422,9 @@
 			source = dest;
 		}
 
+		//clear old error
+		glGetError();
+
 		if (newTexture)
 		{
 			if (IsCompressed)