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Added optimized YUV texture upload path with SDL_UpdateYUVTexture()

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This commit is contained in:
Sam Lantinga 2013-09-28 14:06:47 -07:00
parent d0a57ea2b5
commit 57bd514707
6 changed files with 229 additions and 0 deletions
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25
include/SDL_render.h
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@ -381,6 +381,31 @@ extern DECLSPEC int SDLCALL SDL_UpdateTexture(SDL_Texture * texture,
const SDL_Rect * rect,
const void *pixels, int pitch);
/**
* \brief Update a rectangle within a planar YV12 or IYUV texture with new pixel data.
*
* \param texture The texture to update
* \param rect A pointer to the rectangle of pixels to update, or NULL to
* update the entire texture.
* \param Yplane The raw pixel data for the Y plane.
* \param Ypitch The number of bytes between rows of pixel data for the Y plane.
* \param Uplane The raw pixel data for the U plane.
* \param Upitch The number of bytes between rows of pixel data for the U plane.
* \param Vplane The raw pixel data for the V plane.
* \param Vpitch The number of bytes between rows of pixel data for the V plane.
*
* \return 0 on success, or -1 if the texture is not valid.
*
* \note You can use SDL_UpdateTexture() as long as your pixel data is
* a contiguous block of Y and U/V planes in the proper order, but
* this function is available if your pixel data is not contiguous.
*/
extern DECLSPEC int SDLCALL SDL_UpdateYUVTexture(SDL_Texture * texture,
const SDL_Rect * rect,
const Uint8 *Yplane, int Ypitch,
const Uint8 *Uplane, int Upitch,
const Uint8 *Vplane, int Vpitch);
/**
* \brief Lock a portion of the texture for write-only pixel access.
*