From 7b446854922b8a1b24a509ffc321306258337e01 Mon Sep 17 00:00:00 2001
From: Dmitry Marakasov <amdmi3@amdmi3.ru>
Date: Thu, 27 Aug 2015 18:20:48 +0300
Subject: [PATCH 1/3] Additional 'see also' for Texture::GetFormat()

---
 SDL2pp/Texture.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/SDL2pp/Texture.hh b/SDL2pp/Texture.hh
index 290893c..6992394 100644
--- a/SDL2pp/Texture.hh
+++ b/SDL2pp/Texture.hh
@@ -402,6 +402,7 @@ public:
 	///
 	/// \see http://wiki.libsdl.org/SDL_QueryTexture
 	/// \see http://wiki.libsdl.org/SDL_QueryTexture#format
+	/// \see http://wiki.libsdl.org/SDL_PixelFormatEnum
 	///
 	////////////////////////////////////////////////////////////
 	Uint32 GetFormat() const;

From c54a021d8e2aa8682dd8ac33a63d34b1e1dff096 Mon Sep 17 00:00:00 2001
From: Dmitry Marakasov <amdmi3@amdmi3.ru>
Date: Thu, 27 Aug 2015 18:21:31 +0300
Subject: [PATCH 2/3] Add Surface::GetFormat(), analogus to
 Texture::GetFormat()

---
 SDL2pp/Surface.cc |  4 ++++
 SDL2pp/Surface.hh | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/SDL2pp/Surface.cc b/SDL2pp/Surface.cc
index 3178ba0..7fc86fe 100644
--- a/SDL2pp/Surface.cc
+++ b/SDL2pp/Surface.cc
@@ -213,4 +213,8 @@ Point Surface::GetSize() const {
 	return Point(surface_->w, surface_->h);
 }
 
+Uint32 Surface::GetFormat() const {
+	return surface_->format->format;
+}
+
 }
diff --git a/SDL2pp/Surface.hh b/SDL2pp/Surface.hh
index 1703713..d932c2d 100644
--- a/SDL2pp/Surface.hh
+++ b/SDL2pp/Surface.hh
@@ -540,6 +540,17 @@ public:
 	///
 	////////////////////////////////////////////////////////////
 	Point GetSize() const;
+
+	////////////////////////////////////////////////////////////
+	/// \brief Get texture format
+	///
+	/// \return Surface raw format
+	///
+	/// \see http://wiki.libsdl.org/SDL_Surface
+	/// \see http://wiki.libsdl.org/SDL_PixelFormatEnum
+	///
+	////////////////////////////////////////////////////////////
+	Uint32 GetFormat() const;
 };
 
 }

From 4e12008bcf7d123d9a9be166fe1fb8224519f4e5 Mon Sep 17 00:00:00 2001
From: Dmitry Marakasov <amdmi3@amdmi3.ru>
Date: Thu, 27 Aug 2015 19:11:08 +0300
Subject: [PATCH 3/3] Implement Texture::Update() which takes pixel data from
 Surface

---
 SDL2pp/Texture.cc | 18 ++++++++++++++++++
 SDL2pp/Texture.hh | 21 +++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/SDL2pp/Texture.cc b/SDL2pp/Texture.cc
index d17f245..e8ec191 100644
--- a/SDL2pp/Texture.cc
+++ b/SDL2pp/Texture.cc
@@ -94,6 +94,24 @@ Texture& Texture::Update(const Optional<Rect>& rect, const void* pixels, int pit
 	return *this;
 }
 
+Texture& Texture::Update(const Optional<Rect>& rect, Surface& surface) {
+	Rect real_rect = rect ? *rect : Rect(0, 0, GetWidth(), GetHeight());
+
+	real_rect.w = std::min(real_rect.w, surface.GetWidth());
+	real_rect.h = std::min(real_rect.h, surface.GetHeight());
+
+	if (GetFormat() == surface.GetFormat()) {
+		Surface::LockHandle lock = surface.Lock();
+
+		return Update(real_rect, lock.GetPixels(), lock.GetPitch());
+	} else {
+		Surface converted = surface.Convert(GetFormat());
+		Surface::LockHandle lock = converted.Lock();
+
+		return Update(real_rect, lock.GetPixels(), lock.GetPitch());
+	}
+}
+
 Texture& Texture::UpdateYUV(const Optional<Rect>& rect, const Uint8* yplane, int ypitch, const Uint8* uplane, int upitch, const Uint8* vplane, int vpitch) {
 	if (SDL_UpdateYUVTexture(texture_, rect ? &*rect : nullptr, yplane, ypitch, uplane, upitch, vplane, vpitch) != 0)
 		throw Exception("SDL_UpdateYUVTexture");
diff --git a/SDL2pp/Texture.hh b/SDL2pp/Texture.hh
index 6992394..9c5d7a6 100644
--- a/SDL2pp/Texture.hh
+++ b/SDL2pp/Texture.hh
@@ -313,6 +313,27 @@ public:
 	////////////////////////////////////////////////////////////
 	Texture& Update(const Optional<Rect>& rect, const void* pixels, int pitch);
 
+	////////////////////////////////////////////////////////////
+	/// \brief Update the given texture rectangle with new pixel data taken from surface
+	///
+	/// \param[in] rect Rect representing the area to update, or NullOpt to
+	///                 update the entire texture
+	/// \param[in] surface Surface to take pixel data from
+	///
+	/// \note No scaling is performed in this routine, so if rect and surface
+	///       sizes do not match, cropping is performed as appropriate
+	/// \note If surface and texture pixel formats do not match, surface is
+	///       automatically converted to texture format
+	///
+	/// \returns Reference to self
+	///
+	/// \throws SDL2pp::Exception
+	///
+	/// \see http://wiki.libsdl.org/SDL_UpdateTexture
+	///
+	////////////////////////////////////////////////////////////
+	Texture& Update(const Optional<Rect>& rect, Surface& surface);
+
 	////////////////////////////////////////////////////////////
 	/// \brief Update the given texture rectangle with new pixel data
 	///