From 89c31bb42a5d7265df506f27f944803b332f1f9e Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Sat, 28 Sep 2013 14:06:55 -0700
Subject: [PATCH] Implemented SDL_UpdateYUVTexture() for Direct3D

---
 src/render/SDL_render.c              |  8 +++++--
 src/render/direct3d/SDL_render_d3d.c | 36 ++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/src/render/SDL_render.c b/src/render/SDL_render.c
index 1b9bfd6e8f477..8420d2f7408a4 100644
--- a/src/render/SDL_render.c
+++ b/src/render/SDL_render.c
@@ -901,8 +901,12 @@ int SDL_UpdateYUVTexture(SDL_Texture * texture, const SDL_Rect * rect,
         SDL_assert(!texture->native);
         renderer = texture->renderer;
         SDL_assert(renderer->UpdateTextureYUV);
-        return renderer->UpdateTextureYUV(renderer, texture, rect, Yplane, Ypitch, Uplane, Upitch, Vplane, Vpitch);
-    }
+		if (renderer->UpdateTextureYUV) {
+			return renderer->UpdateTextureYUV(renderer, texture, rect, Yplane, Ypitch, Uplane, Upitch, Vplane, Vpitch);
+		} else {
+			return SDL_Unsupported();
+		}
+	}
 }
 
 static int
diff --git a/src/render/direct3d/SDL_render_d3d.c b/src/render/direct3d/SDL_render_d3d.c
index 0248b21a06af8..865ac21c09b47 100644
--- a/src/render/direct3d/SDL_render_d3d.c
+++ b/src/render/direct3d/SDL_render_d3d.c
@@ -211,6 +211,11 @@ static int D3D_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
 static int D3D_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                              const SDL_Rect * rect, const void *pixels,
                              int pitch);
+static int D3D_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
+                                const SDL_Rect * rect,
+                                const Uint8 *Yplane, int Ypitch,
+                                const Uint8 *Uplane, int Upitch,
+                                const Uint8 *Vplane, int Vpitch);
 static int D3D_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                            const SDL_Rect * rect, void **pixels, int *pitch);
 static void D3D_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
@@ -599,6 +604,7 @@ D3D_CreateRenderer(SDL_Window * window, Uint32 flags)
     renderer->WindowEvent = D3D_WindowEvent;
     renderer->CreateTexture = D3D_CreateTexture;
     renderer->UpdateTexture = D3D_UpdateTexture;
+	renderer->UpdateTextureYUV = D3D_UpdateTextureYUV;
     renderer->LockTexture = D3D_LockTexture;
     renderer->UnlockTexture = D3D_UnlockTexture;
     renderer->SetRenderTarget = D3D_SetRenderTarget;
@@ -1016,6 +1022,36 @@ D3D_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
     return 0;
 }
 
+static int
+D3D_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
+                     const SDL_Rect * rect,
+                     const Uint8 *Yplane, int Ypitch,
+                     const Uint8 *Uplane, int Upitch,
+                     const Uint8 *Vplane, int Vpitch)
+{
+	D3D_TextureData *data = (D3D_TextureData *) texture->driverdata;
+	SDL_bool full_texture = SDL_FALSE;
+
+#ifdef USE_DYNAMIC_TEXTURE
+	if (texture->access == SDL_TEXTUREACCESS_STREAMING &&
+		rect->x == 0 && rect->y == 0 &&
+		rect->w == texture->w && rect->h == texture->h) {
+			full_texture = SDL_TRUE;
+	}
+#endif
+
+	if (D3D_UpdateTextureInternal(data->texture, texture->format, full_texture, rect->x, rect->y, rect->w, rect->h, Yplane, Ypitch) < 0) {
+		return -1;
+	}
+	if (D3D_UpdateTextureInternal(data->utexture, texture->format, full_texture, rect->x / 2, rect->y / 2, rect->w / 2, rect->h / 2, Uplane, Upitch) < 0) {
+		return -1;
+	}
+	if (D3D_UpdateTextureInternal(data->vtexture, texture->format, full_texture, rect->x / 2, rect->y / 2, rect->w / 2, rect->h / 2, Vplane, Vpitch) < 0) {
+		return -1;
+	}
+	return 0;
+}
+
 static int
 D3D_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
                 const SDL_Rect * rect, void **pixels, int *pitch)