Fixed issue #891.

src/image.h

@@ -295,10 +295,23 @@ namespace bgfx
 	TextureFormat::Enum getFormat(const char* _name);
 
 	/// Returns number of mip-maps required for complete mip-map chain.
-	uint8_t imageGetNumMips(TextureFormat::Enum _format, uint16_t _width, uint16_t _height, uint16_t _depth = 0);
+	uint8_t imageGetNumMips(
+		  TextureFormat::Enum _format
+		, uint16_t _width
+		, uint16_t _height
+		, uint16_t _depth = 0
+	);
 
 	/// Returns image size.
-	uint32_t imageGetSize(TextureFormat::Enum _format, uint16_t _width, uint16_t _height, uint16_t _depth = 0, uint16_t _numLayers = 0, bool _cubeMap = false, uint8_t _numMips = 0);
+	uint32_t imageGetSize(
+		  TextureFormat::Enum _format
+		, uint16_t _width
+		, uint16_t _height
+		, uint16_t _depth = 0
+		, uint16_t _numLayers = 1
+		, bool _cubeMap = false
+		, uint8_t _numMips = 1
+	);
 
 	///
 	void imageSolid(uint32_t _width, uint32_t _height, uint32_t _solid, void* _dst);
@@ -343,7 +356,16 @@ namespace bgfx
 	bool imageConvert(void* _dst, TextureFormat::Enum _dstFormat, const void* _src, TextureFormat::Enum _srcFormat, uint32_t _width, uint32_t _height);
 
 	///
-	const Memory* imageAlloc(ImageContainer& _imageContainer, TextureFormat::Enum _format, uint16_t _width, uint16_t _height, uint16_t _depth = 0, uint16_t _numLayers = 0, bool _cubeMap = false, bool _generateMips = false);
+	const Memory* imageAlloc(
+		  ImageContainer& _imageContainer
+		, TextureFormat::Enum _format
+		, uint16_t _width
+		, uint16_t _height
+		, uint16_t _depth = 0
+		, uint16_t _numLayers = 1
+		, bool _cubeMap = false
+		, bool _generateMips = false
+	);
 
 	///
 	void imageFree(const Memory* _memory);