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Merge SDL-ryan-batching-renderer branch to default.

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--HG--
extra : rebase_source : 83b86d35497a01be6f48055490580bbba19ccc7a
extra : amend_source : faae1a04859499ede43aba3ba50fc4f62b5afbcb
This commit is contained in:
Ryan C. Gordon 2018-10-31 15:03:41 -04:00
commit 9f99a9c642
38 changed files with 6953 additions and 5554 deletions
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25
include/SDL_hints.h
View file

@ -1043,6 +1043,31 @@ extern "C" {
*/
#define SDL_HINT_AUDIO_CATEGORY "SDL_AUDIO_CATEGORY"
/**
* \brief A variable controlling whether the 2D render API is compatible or efficient.
*
* This variable can be set to the following values:
*
* "0" - Don't use batching to make rendering more efficient.
* "1" - Use batching, but might cause problems if app makes its own direct OpenGL calls.
*
* Up to SDL 2.0.9, the render API would draw immediately when requested. Now
* it batches up draw requests and sends them all to the GPU only when forced
* to (during SDL_RenderPresent, when changing render targets, by updating a
* texture that the batch needs, etc). This is significantly more efficient,
* but it can cause problems for apps that expect to render on top of the
* render API's output. As such, SDL will disable batching if a specific
* render backend is requested (since this might indicate that the app is
* planning to use the underlying graphics API directly). This hint can
* be used to explicitly request batching in this instance. It is a contract
* that you will either never use the underlying graphics API directly, or
* if you do, you will call SDL_RenderFlush() before you do so any current
* batch goes to the GPU before your work begins. Not following this contract
* will result in undefined behavior.
*/
#define SDL_HINT_RENDER_BATCHING "SDL_RENDER_BATCHING"
/**
* \brief An enumeration of hint priorities
*/

30
include/SDL_rect.h
View file

@ -40,7 +40,7 @@ extern "C" {
#endif
/**
* \brief The structure that defines a point
* \brief The structure that defines a point (integer)
*
* \sa SDL_EnclosePoints
* \sa SDL_PointInRect
@ -52,7 +52,20 @@ typedef struct SDL_Point
} SDL_Point;
/**
* \brief A rectangle, with the origin at the upper left.
* \brief The structure that defines a point (floating point)
*
* \sa SDL_EnclosePoints
* \sa SDL_PointInRect
*/
typedef struct SDL_FPoint
{
float x;
float y;
} SDL_FPoint;
/**
* \brief A rectangle, with the origin at the upper left (integer).
*
* \sa SDL_RectEmpty
* \sa SDL_RectEquals
@ -67,6 +80,19 @@ typedef struct SDL_Rect
int w, h;
} SDL_Rect;
/**
* \brief A rectangle, with the origin at the upper left (floating point).
*/
typedef struct SDL_FRect
{
float x;
float y;
float w;
float h;
} SDL_FRect;
/**
* \brief Returns true if point resides inside a rectangle.
*/

167
include/SDL_render.h
View file

@ -835,6 +835,148 @@ extern DECLSPEC int SDLCALL SDL_RenderCopyEx(SDL_Renderer * renderer,
const SDL_Point *center,
const SDL_RendererFlip flip);
/**
* \brief Draw a point on the current rendering target.
*
* \param renderer The renderer which should draw a point.
* \param x The x coordinate of the point.
* \param y The y coordinate of the point.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawPointF(SDL_Renderer * renderer,
float x, float y);
/**
* \brief Draw multiple points on the current rendering target.
*
* \param renderer The renderer which should draw multiple points.
* \param points The points to draw
* \param count The number of points to draw
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawPointsF(SDL_Renderer * renderer,
const SDL_FPoint * points,
int count);
/**
* \brief Draw a line on the current rendering target.
*
* \param renderer The renderer which should draw a line.
* \param x1 The x coordinate of the start point.
* \param y1 The y coordinate of the start point.
* \param x2 The x coordinate of the end point.
* \param y2 The y coordinate of the end point.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawLineF(SDL_Renderer * renderer,
float x1, float y1, float x2, float y2);
/**
* \brief Draw a series of connected lines on the current rendering target.
*
* \param renderer The renderer which should draw multiple lines.
* \param points The points along the lines
* \param count The number of points, drawing count-1 lines
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawLinesF(SDL_Renderer * renderer,
const SDL_FPoint * points,
int count);
/**
* \brief Draw a rectangle on the current rendering target.
*
* \param renderer The renderer which should draw a rectangle.
* \param rect A pointer to the destination rectangle, or NULL to outline the entire rendering target.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawRectF(SDL_Renderer * renderer,
const SDL_FRect * rect);
/**
* \brief Draw some number of rectangles on the current rendering target.
*
* \param renderer The renderer which should draw multiple rectangles.
* \param rects A pointer to an array of destination rectangles.
* \param count The number of rectangles.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderDrawRectsF(SDL_Renderer * renderer,
const SDL_FRect * rects,
int count);
/**
* \brief Fill a rectangle on the current rendering target with the drawing color.
*
* \param renderer The renderer which should fill a rectangle.
* \param rect A pointer to the destination rectangle, or NULL for the entire
* rendering target.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderFillRectF(SDL_Renderer * renderer,
const SDL_FRect * rect);
/**
* \brief Fill some number of rectangles on the current rendering target with the drawing color.
*
* \param renderer The renderer which should fill multiple rectangles.
* \param rects A pointer to an array of destination rectangles.
* \param count The number of rectangles.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderFillRectsF(SDL_Renderer * renderer,
const SDL_FRect * rects,
int count);
/**
* \brief Copy a portion of the texture to the current rendering target.
*
* \param renderer The renderer which should copy parts of a texture.
* \param texture The source texture.
* \param srcrect A pointer to the source rectangle, or NULL for the entire
* texture.
* \param dstrect A pointer to the destination rectangle, or NULL for the
* entire rendering target.
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderCopyF(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_FRect * dstrect);
/**
* \brief Copy a portion of the source texture to the current rendering target, rotating it by angle around the given center
*
* \param renderer The renderer which should copy parts of a texture.
* \param texture The source texture.
* \param srcrect A pointer to the source rectangle, or NULL for the entire
* texture.
* \param dstrect A pointer to the destination rectangle, or NULL for the
* entire rendering target.
* \param angle An angle in degrees that indicates the rotation that will be applied to dstrect, rotating it in a clockwise direction
* \param center A pointer to a point indicating the point around which dstrect will be rotated (if NULL, rotation will be done around dstrect.w/2, dstrect.h/2).
* \param flip An SDL_RendererFlip value stating which flipping actions should be performed on the texture
*
* \return 0 on success, or -1 on error
*/
extern DECLSPEC int SDLCALL SDL_RenderCopyExF(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_FRect * dstrect,
const double angle,
const SDL_FPoint *center,
const SDL_RendererFlip flip);
/**
* \brief Read pixels from the current rendering target.
*
@ -876,6 +1018,31 @@ extern DECLSPEC void SDLCALL SDL_DestroyTexture(SDL_Texture * texture);
*/
extern DECLSPEC void SDLCALL SDL_DestroyRenderer(SDL_Renderer * renderer);
/**
* \brief Force the rendering context to flush any pending commands to the
* underlying rendering API.
*
* You do not need to (and in fact, shouldn't) call this function unless
* you are planning to call into OpenGL/Direct3D/Metal/whatever directly
* in addition to using an SDL_Renderer.
*
* This is for a very-specific case: if you are using SDL's render API,
* you asked for a specific renderer backend (OpenGL, Direct3D, etc),
* you set SDL_HINT_RENDER_BATCHING to "1", and you plan to make
* OpenGL/D3D/whatever calls in addition to SDL render API calls. If all of
* this applies, you should call SDL_RenderFlush() between calls to SDL's
* render API and the low-level API you're using in cooperation.
*
* In all other cases, you can ignore this function. This is only here to
* get maximum performance out of a specific situation. In all other cases,
* SDL will do the right thing, perhaps at a performance loss.
*
* This function is first available in SDL 2.0.10, and is not needed in
* 2.0.9 and earlier, as earlier versions did not queue rendering commands
* at all, instead flushing them to the OS immediately.
*/
extern DECLSPEC int SDLCALL SDL_RenderFlush(SDL_Renderer * renderer);
/**
* \brief Bind the texture to the current OpenGL/ES/ES2 context for use with