WebSVN – Games.Prince of Persia – Blame – /SDL2.framework/Headers/SDL_render.h

Rev	Author	Line No.	Line
1	pmbaty	1	/*
		2	Simple DirectMedia Layer
		3	Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
		4
		5	This software is provided 'as-is', without any express or implied
		6	warranty. In no event will the authors be held liable for any damages
		7	arising from the use of this software.
		8
		9	Permission is granted to anyone to use this software for any purpose,
		10	including commercial applications, and to alter it and redistribute it
		11	freely, subject to the following restrictions:
		12
		13	1. The origin of this software must not be misrepresented; you must not
		14	claim that you wrote the original software. If you use this software
		15	in a product, an acknowledgment in the product documentation would be
		16	appreciated but is not required.
		17	2. Altered source versions must be plainly marked as such, and must not be
		18	misrepresented as being the original software.
		19	3. This notice may not be removed or altered from any source distribution.
		20	*/
		21
		22	/**
		23	* \file SDL_render.h
		24	*
		25	* Header file for SDL 2D rendering functions.
		26	*
		27	* This API supports the following features:
		28	* * single pixel points
		29	* * single pixel lines
		30	* * filled rectangles
		31	* * texture images
		32	*
		33	* The primitives may be drawn in opaque, blended, or additive modes.
		34	*
		35	* The texture images may be drawn in opaque, blended, or additive modes.
		36	* They can have an additional color tint or alpha modulation applied to
		37	* them, and may also be stretched with linear interpolation.
		38	*
		39	* This API is designed to accelerate simple 2D operations. You may
		40	* want more functionality such as polygons and particle effects and
		41	* in that case you should use SDL's OpenGL/Direct3D support or one
		42	* of the many good 3D engines.
		43	*
		44	* These functions must be called from the main thread.
		45	* See this bug for details: http://bugzilla.libsdl.org/show_bug.cgi?id=1995
		46	*/
		47
		48	#ifndef SDL_render_h_
		49	#define SDL_render_h_
		50
		51	#include "SDL_stdinc.h"
		52	#include "SDL_rect.h"
		53	#include "SDL_video.h"
		54
		55	#include "begin_code.h"
		56	/* Set up for C function definitions, even when using C++ */
		57	#ifdef __cplusplus
		58	extern "C" {
		59	#endif
		60
		61	/**
		62	* \brief Flags used when creating a rendering context
		63	*/
		64	typedef enum
		65	{
		66	SDL_RENDERER_SOFTWARE = 0x00000001, /*< The renderer is a software fallback /
		67	SDL_RENDERER_ACCELERATED = 0x00000002, /**< The renderer uses hardware
		68	acceleration */
		69	SDL_RENDERER_PRESENTVSYNC = 0x00000004, /**< Present is synchronized
		70	with the refresh rate */
		71	SDL_RENDERER_TARGETTEXTURE = 0x00000008 /**< The renderer supports
		72	rendering to texture */
		73	} SDL_RendererFlags;
		74
		75	/**
		76	* \brief Information on the capabilities of a render driver or context.
		77	*/
		78	typedef struct SDL_RendererInfo
		79	{
		80	const char name; /< The name of the renderer /
		81	Uint32 flags; /*< Supported ::SDL_RendererFlags /
		82	Uint32 num_texture_formats; /*< The number of available texture formats /
		83	Uint32 texture_formats[16]; /*< The available texture formats /
		84	int max_texture_width; /*< The maximum texture width /
		85	int max_texture_height; /*< The maximum texture height /
		86	} SDL_RendererInfo;
		87
		88	/**
		89	* \brief The access pattern allowed for a texture.
		90	*/
		91	typedef enum
		92	{
		93	SDL_TEXTUREACCESS_STATIC, /*< Changes rarely, not lockable /
		94	SDL_TEXTUREACCESS_STREAMING, /*< Changes frequently, lockable /
		95	SDL_TEXTUREACCESS_TARGET /*< Texture can be used as a render target /
		96	} SDL_TextureAccess;
		97
		98	/**
		99	* \brief The texture channel modulation used in SDL_RenderCopy().
		100	*/
		101	typedef enum
		102	{
		103	SDL_TEXTUREMODULATE_NONE = 0x00000000, /*< No modulation /
		104	SDL_TEXTUREMODULATE_COLOR = 0x00000001, /*< srcC = srcC color */
		105	SDL_TEXTUREMODULATE_ALPHA = 0x00000002 /*< srcA = srcA alpha */
		106	} SDL_TextureModulate;
		107
		108	/**
		109	* \brief Flip constants for SDL_RenderCopyEx
		110	*/
		111	typedef enum
		112	{
		113	SDL_FLIP_NONE = 0x00000000, /*< Do not flip /
		114	SDL_FLIP_HORIZONTAL = 0x00000001, /*< flip horizontally /
		115	SDL_FLIP_VERTICAL = 0x00000002 /*< flip vertically /
		116	} SDL_RendererFlip;
		117
		118	/**
		119	* \brief A structure representing rendering state
		120	*/
		121	struct SDL_Renderer;
		122	typedef struct SDL_Renderer SDL_Renderer;
		123
		124	/**
		125	* \brief An efficient driver-specific representation of pixel data
		126	*/
		127	struct SDL_Texture;
		128	typedef struct SDL_Texture SDL_Texture;
		129
		130
		131	/* Function prototypes */
		132
		133	/**
		134	* \brief Get the number of 2D rendering drivers available for the current
		135	* display.
		136	*
		137	* A render driver is a set of code that handles rendering and texture
		138	* management on a particular display. Normally there is only one, but
		139	* some drivers may have several available with different capabilities.
		140	*
		141	* \sa SDL_GetRenderDriverInfo()
		142	* \sa SDL_CreateRenderer()
		143	*/
		144	extern DECLSPEC int SDLCALL SDL_GetNumRenderDrivers(void);
		145
		146	/**
		147	* \brief Get information about a specific 2D rendering driver for the current
		148	* display.
		149	*
		150	* \param index The index of the driver to query information about.
		151	* \param info A pointer to an SDL_RendererInfo struct to be filled with
		152	* information on the rendering driver.
		153	*
		154	* \return 0 on success, -1 if the index was out of range.
		155	*
		156	* \sa SDL_CreateRenderer()
		157	*/
		158	extern DECLSPEC int SDLCALL SDL_GetRenderDriverInfo(int index,
		159	SDL_RendererInfo * info);
		160
		161	/**
		162	* \brief Create a window and default renderer
		163	*
		164	* \param width The width of the window
		165	* \param height The height of the window
		166	* \param window_flags The flags used to create the window
		167	* \param window A pointer filled with the window, or NULL on error
		168	* \param renderer A pointer filled with the renderer, or NULL on error
		169	*
		170	* \return 0 on success, or -1 on error
		171	*/
		172	extern DECLSPEC int SDLCALL SDL_CreateWindowAndRenderer(
		173	int width, int height, Uint32 window_flags,
		174	SDL_Window window, SDL_Renderer renderer);
		175
		176
		177	/**
		178	* \brief Create a 2D rendering context for a window.
		179	*
		180	* \param window The window where rendering is displayed.
		181	* \param index The index of the rendering driver to initialize, or -1 to
		182	* initialize the first one supporting the requested flags.
		183	* \param flags ::SDL_RendererFlags.
		184	*
		185	* \return A valid rendering context or NULL if there was an error.
		186	*
		187	* \sa SDL_CreateSoftwareRenderer()
		188	* \sa SDL_GetRendererInfo()
		189	* \sa SDL_DestroyRenderer()
		190	*/
		191	extern DECLSPEC SDL_Renderer * SDLCALL SDL_CreateRenderer(SDL_Window * window,
		192	int index, Uint32 flags);
		193
		194	/**
		195	* \brief Create a 2D software rendering context for a surface.
		196	*
		197	* \param surface The surface where rendering is done.
		198	*
		199	* \return A valid rendering context or NULL if there was an error.
		200	*
		201	* \sa SDL_CreateRenderer()
		202	* \sa SDL_DestroyRenderer()
		203	*/
		204	extern DECLSPEC SDL_Renderer * SDLCALL SDL_CreateSoftwareRenderer(SDL_Surface * surface);
		205
		206	/**
		207	* \brief Get the renderer associated with a window.
		208	*/
		209	extern DECLSPEC SDL_Renderer * SDLCALL SDL_GetRenderer(SDL_Window * window);
		210
		211	/**
		212	* \brief Get information about a rendering context.
		213	*/
		214	extern DECLSPEC int SDLCALL SDL_GetRendererInfo(SDL_Renderer * renderer,
		215	SDL_RendererInfo * info);
		216
		217	/**
		218	* \brief Get the output size in pixels of a rendering context.
		219	*/
		220	extern DECLSPEC int SDLCALL SDL_GetRendererOutputSize(SDL_Renderer * renderer,
		221	int w, int h);
		222
		223	/**
		224	* \brief Create a texture for a rendering context.
		225	*
		226	* \param renderer The renderer.
		227	* \param format The format of the texture.
		228	* \param access One of the enumerated values in ::SDL_TextureAccess.
		229	* \param w The width of the texture in pixels.
		230	* \param h The height of the texture in pixels.
		231	*
		232	* \return The created texture is returned, or NULL if no rendering context was
		233	* active, the format was unsupported, or the width or height were out
		234	* of range.
		235	*
		236	* \note The contents of the texture are not defined at creation.
		237	*
		238	* \sa SDL_QueryTexture()
		239	* \sa SDL_UpdateTexture()
		240	* \sa SDL_DestroyTexture()
		241	*/
		242	extern DECLSPEC SDL_Texture * SDLCALL SDL_CreateTexture(SDL_Renderer * renderer,
		243	Uint32 format,
		244	int access, int w,
		245	int h);
		246
		247	/**
		248	* \brief Create a texture from an existing surface.
		249	*
		250	* \param renderer The renderer.
		251	* \param surface The surface containing pixel data used to fill the texture.
		252	*
		253	* \return The created texture is returned, or NULL on error.
		254	*
		255	* \note The surface is not modified or freed by this function.
		256	*
		257	* \sa SDL_QueryTexture()
		258	* \sa SDL_DestroyTexture()
		259	*/
		260	extern DECLSPEC SDL_Texture * SDLCALL SDL_CreateTextureFromSurface(SDL_Renderer * renderer, SDL_Surface * surface);
		261
		262	/**
		263	* \brief Query the attributes of a texture
		264	*
		265	* \param texture A texture to be queried.
		266	* \param format A pointer filled in with the raw format of the texture. The
		267	* actual format may differ, but pixel transfers will use this
		268	* format.
		269	* \param access A pointer filled in with the actual access to the texture.
		270	* \param w A pointer filled in with the width of the texture in pixels.
		271	* \param h A pointer filled in with the height of the texture in pixels.
		272	*
		273	* \return 0 on success, or -1 if the texture is not valid.
		274	*/
		275	extern DECLSPEC int SDLCALL SDL_QueryTexture(SDL_Texture * texture,
		276	Uint32 * format, int *access,
		277	int w, int h);
		278
		279	/**
		280	* \brief Set an additional color value used in render copy operations.
		281	*
		282	* \param texture The texture to update.
		283	* \param r The red color value multiplied into copy operations.
		284	* \param g The green color value multiplied into copy operations.
		285	* \param b The blue color value multiplied into copy operations.
		286	*
		287	* \return 0 on success, or -1 if the texture is not valid or color modulation
		288	* is not supported.
		289	*
		290	* \sa SDL_GetTextureColorMod()
		291	*/
		292	extern DECLSPEC int SDLCALL SDL_SetTextureColorMod(SDL_Texture * texture,
		293	Uint8 r, Uint8 g, Uint8 b);
		294
		295
		296	/**
		297	* \brief Get the additional color value used in render copy operations.
		298	*
		299	* \param texture The texture to query.
		300	* \param r A pointer filled in with the current red color value.
		301	* \param g A pointer filled in with the current green color value.
		302	* \param b A pointer filled in with the current blue color value.
		303	*
		304	* \return 0 on success, or -1 if the texture is not valid.
		305	*
		306	* \sa SDL_SetTextureColorMod()
		307	*/
		308	extern DECLSPEC int SDLCALL SDL_GetTextureColorMod(SDL_Texture * texture,
		309	Uint8 * r, Uint8 * g,
		310	Uint8 * b);
		311
		312	/**
		313	* \brief Set an additional alpha value used in render copy operations.
		314	*
		315	* \param texture The texture to update.
		316	* \param alpha The alpha value multiplied into copy operations.
		317	*
		318	* \return 0 on success, or -1 if the texture is not valid or alpha modulation
		319	* is not supported.
		320	*
		321	* \sa SDL_GetTextureAlphaMod()
		322	*/
		323	extern DECLSPEC int SDLCALL SDL_SetTextureAlphaMod(SDL_Texture * texture,
		324	Uint8 alpha);
		325
		326	/**
		327	* \brief Get the additional alpha value used in render copy operations.
		328	*
		329	* \param texture The texture to query.
		330	* \param alpha A pointer filled in with the current alpha value.
		331	*
		332	* \return 0 on success, or -1 if the texture is not valid.
		333	*
		334	* \sa SDL_SetTextureAlphaMod()
		335	*/
		336	extern DECLSPEC int SDLCALL SDL_GetTextureAlphaMod(SDL_Texture * texture,
		337	Uint8 * alpha);
		338
		339	/**
		340	* \brief Set the blend mode used for texture copy operations.
		341	*
		342	* \param texture The texture to update.
		343	* \param blendMode ::SDL_BlendMode to use for texture blending.
		344	*
		345	* \return 0 on success, or -1 if the texture is not valid or the blend mode is
		346	* not supported.
		347	*
		348	* \note If the blend mode is not supported, the closest supported mode is
		349	* chosen.
		350	*
		351	* \sa SDL_GetTextureBlendMode()
		352	*/
		353	extern DECLSPEC int SDLCALL SDL_SetTextureBlendMode(SDL_Texture * texture,
		354	SDL_BlendMode blendMode);
		355
		356	/**
		357	* \brief Get the blend mode used for texture copy operations.
		358	*
		359	* \param texture The texture to query.
		360	* \param blendMode A pointer filled in with the current blend mode.
		361	*
		362	* \return 0 on success, or -1 if the texture is not valid.
		363	*
		364	* \sa SDL_SetTextureBlendMode()
		365	*/
		366	extern DECLSPEC int SDLCALL SDL_GetTextureBlendMode(SDL_Texture * texture,
		367	SDL_BlendMode *blendMode);
		368
		369	/**
		370	* \brief Update the given texture rectangle with new pixel data.
		371	*
		372	* \param texture The texture to update
		373	* \param rect A pointer to the rectangle of pixels to update, or NULL to
		374	* update the entire texture.
		375	* \param pixels The raw pixel data in the format of the texture.
		376	* \param pitch The number of bytes in a row of pixel data, including padding between lines.
		377	*
		378	* The pixel data must be in the format of the texture. The pixel format can be
		379	* queried with SDL_QueryTexture.
		380	*
		381	* \return 0 on success, or -1 if the texture is not valid.
		382	*
		383	* \note This is a fairly slow function.
		384	*/
		385	extern DECLSPEC int SDLCALL SDL_UpdateTexture(SDL_Texture * texture,
		386	const SDL_Rect * rect,
		387	const void *pixels, int pitch);
		388
		389	/**
		390	* \brief Update a rectangle within a planar YV12 or IYUV texture with new pixel data.
		391	*
		392	* \param texture The texture to update
		393	* \param rect A pointer to the rectangle of pixels to update, or NULL to
		394	* update the entire texture.
		395	* \param Yplane The raw pixel data for the Y plane.
		396	* \param Ypitch The number of bytes between rows of pixel data for the Y plane.
		397	* \param Uplane The raw pixel data for the U plane.
		398	* \param Upitch The number of bytes between rows of pixel data for the U plane.
		399	* \param Vplane The raw pixel data for the V plane.
		400	* \param Vpitch The number of bytes between rows of pixel data for the V plane.
		401	*
		402	* \return 0 on success, or -1 if the texture is not valid.
		403	*
		404	* \note You can use SDL_UpdateTexture() as long as your pixel data is
		405	* a contiguous block of Y and U/V planes in the proper order, but
		406	* this function is available if your pixel data is not contiguous.
		407	*/
		408	extern DECLSPEC int SDLCALL SDL_UpdateYUVTexture(SDL_Texture * texture,
		409	const SDL_Rect * rect,
		410	const Uint8 *Yplane, int Ypitch,
		411	const Uint8 *Uplane, int Upitch,
		412	const Uint8 *Vplane, int Vpitch);
		413
		414	/**
		415	* \brief Lock a portion of the texture for write-only pixel access.
		416	*
		417	* \param texture The texture to lock for access, which was created with
		418	* ::SDL_TEXTUREACCESS_STREAMING.
		419	* \param rect A pointer to the rectangle to lock for access. If the rect
		420	* is NULL, the entire texture will be locked.
		421	* \param pixels This is filled in with a pointer to the locked pixels,
		422	* appropriately offset by the locked area.
		423	* \param pitch This is filled in with the pitch of the locked pixels.
		424	*
		425	* \return 0 on success, or -1 if the texture is not valid or was not created with ::SDL_TEXTUREACCESS_STREAMING.
		426	*
		427	* \sa SDL_UnlockTexture()
		428	*/
		429	extern DECLSPEC int SDLCALL SDL_LockTexture(SDL_Texture * texture,
		430	const SDL_Rect * rect,
		431	void *pixels, int pitch);
		432
		433	/**
		434	* \brief Unlock a texture, uploading the changes to video memory, if needed.
		435	*
		436	* \sa SDL_LockTexture()
		437	*/
		438	extern DECLSPEC void SDLCALL SDL_UnlockTexture(SDL_Texture * texture);
		439
		440	/**
		441	* \brief Determines whether a window supports the use of render targets
		442	*
		443	* \param renderer The renderer that will be checked
		444	*
		445	* \return SDL_TRUE if supported, SDL_FALSE if not.
		446	*/
		447	extern DECLSPEC SDL_bool SDLCALL SDL_RenderTargetSupported(SDL_Renderer *renderer);
		448
		449	/**
		450	* \brief Set a texture as the current rendering target.
		451	*
		452	* \param renderer The renderer.
		453	* \param texture The targeted texture, which must be created with the SDL_TEXTUREACCESS_TARGET flag, or NULL for the default render target
		454	*
		455	* \return 0 on success, or -1 on error
		456	*
		457	* \sa SDL_GetRenderTarget()
		458	*/
		459	extern DECLSPEC int SDLCALL SDL_SetRenderTarget(SDL_Renderer *renderer,
		460	SDL_Texture *texture);
		461
		462	/**
		463	* \brief Get the current render target or NULL for the default render target.
		464	*
		465	* \return The current render target
		466	*
		467	* \sa SDL_SetRenderTarget()
		468	*/
		469	extern DECLSPEC SDL_Texture * SDLCALL SDL_GetRenderTarget(SDL_Renderer *renderer);
		470
		471	/**
		472	* \brief Set device independent resolution for rendering
		473	*
		474	* \param renderer The renderer for which resolution should be set.
		475	* \param w The width of the logical resolution
		476	* \param h The height of the logical resolution
		477	*
		478	* This function uses the viewport and scaling functionality to allow a fixed logical
		479	* resolution for rendering, regardless of the actual output resolution. If the actual
		480	* output resolution doesn't have the same aspect ratio the output rendering will be
		481	* centered within the output display.
		482	*
		483	* If the output display is a window, mouse events in the window will be filtered
		484	* and scaled so they seem to arrive within the logical resolution.
		485	*
		486	* \note If this function results in scaling or subpixel drawing by the
		487	* rendering backend, it will be handled using the appropriate
		488	* quality hints.
		489	*
		490	* \sa SDL_RenderGetLogicalSize()
		491	* \sa SDL_RenderSetScale()
		492	* \sa SDL_RenderSetViewport()
		493	*/
		494	extern DECLSPEC int SDLCALL SDL_RenderSetLogicalSize(SDL_Renderer * renderer, int w, int h);
		495
		496	/**
		497	* \brief Get device independent resolution for rendering
		498	*
		499	* \param renderer The renderer from which resolution should be queried.
		500	* \param w A pointer filled with the width of the logical resolution
		501	* \param h A pointer filled with the height of the logical resolution
		502	*
		503	* \sa SDL_RenderSetLogicalSize()
		504	*/
		505	extern DECLSPEC void SDLCALL SDL_RenderGetLogicalSize(SDL_Renderer * renderer, int w, int h);
		506
		507	/**
		508	* \brief Set whether to force integer scales for resolution-independent rendering
		509	*
		510	* \param renderer The renderer for which integer scaling should be set.
		511	* \param enable Enable or disable integer scaling
		512	*
		513	* This function restricts the logical viewport to integer values - that is, when
		514	* a resolution is between two multiples of a logical size, the viewport size is
		515	* rounded down to the lower multiple.
		516	*
		517	* \sa SDL_RenderSetLogicalSize()
		518	*/
		519	extern DECLSPEC int SDLCALL SDL_RenderSetIntegerScale(SDL_Renderer * renderer,
		520	SDL_bool enable);
		521
		522	/**
		523	* \brief Get whether integer scales are forced for resolution-independent rendering
		524	*
		525	* \param renderer The renderer from which integer scaling should be queried.
		526	*
		527	* \sa SDL_RenderSetIntegerScale()
		528	*/
		529	extern DECLSPEC SDL_bool SDLCALL SDL_RenderGetIntegerScale(SDL_Renderer * renderer);
		530
		531	/**
		532	* \brief Set the drawing area for rendering on the current target.
		533	*
		534	* \param renderer The renderer for which the drawing area should be set.
		535	* \param rect The rectangle representing the drawing area, or NULL to set the viewport to the entire target.
		536	*
		537	* The x,y of the viewport rect represents the origin for rendering.
		538	*
		539	* \return 0 on success, or -1 on error
		540	*
		541	* \note If the window associated with the renderer is resized, the viewport is automatically reset.
		542	*
		543	* \sa SDL_RenderGetViewport()
		544	* \sa SDL_RenderSetLogicalSize()
		545	*/
		546	extern DECLSPEC int SDLCALL SDL_RenderSetViewport(SDL_Renderer * renderer,
		547	const SDL_Rect * rect);
		548
		549	/**
		550	* \brief Get the drawing area for the current target.
		551	*
		552	* \sa SDL_RenderSetViewport()
		553	*/
		554	extern DECLSPEC void SDLCALL SDL_RenderGetViewport(SDL_Renderer * renderer,
		555	SDL_Rect * rect);
		556
		557	/**
		558	* \brief Set the clip rectangle for the current target.
		559	*
		560	* \param renderer The renderer for which clip rectangle should be set.
		561	* \param rect A pointer to the rectangle to set as the clip rectangle, or
		562	* NULL to disable clipping.
		563	*
		564	* \return 0 on success, or -1 on error
		565	*
		566	* \sa SDL_RenderGetClipRect()
		567	*/
		568	extern DECLSPEC int SDLCALL SDL_RenderSetClipRect(SDL_Renderer * renderer,
		569	const SDL_Rect * rect);
		570
		571	/**
		572	* \brief Get the clip rectangle for the current target.
		573	*
		574	* \param renderer The renderer from which clip rectangle should be queried.
		575	* \param rect A pointer filled in with the current clip rectangle, or
		576	* an empty rectangle if clipping is disabled.
		577	*
		578	* \sa SDL_RenderSetClipRect()
		579	*/
		580	extern DECLSPEC void SDLCALL SDL_RenderGetClipRect(SDL_Renderer * renderer,
		581	SDL_Rect * rect);
		582
		583	/**
		584	* \brief Get whether clipping is enabled on the given renderer.
		585	*
		586	* \param renderer The renderer from which clip state should be queried.
		587	*
		588	* \sa SDL_RenderGetClipRect()
		589	*/
		590	extern DECLSPEC SDL_bool SDLCALL SDL_RenderIsClipEnabled(SDL_Renderer * renderer);
		591
		592
		593	/**
		594	* \brief Set the drawing scale for rendering on the current target.
		595	*
		596	* \param renderer The renderer for which the drawing scale should be set.
		597	* \param scaleX The horizontal scaling factor
		598	* \param scaleY The vertical scaling factor
		599	*
		600	* The drawing coordinates are scaled by the x/y scaling factors
		601	* before they are used by the renderer. This allows resolution
		602	* independent drawing with a single coordinate system.
		603	*
		604	* \note If this results in scaling or subpixel drawing by the
		605	* rendering backend, it will be handled using the appropriate
		606	* quality hints. For best results use integer scaling factors.
		607	*
		608	* \sa SDL_RenderGetScale()
		609	* \sa SDL_RenderSetLogicalSize()
		610	*/
		611	extern DECLSPEC int SDLCALL SDL_RenderSetScale(SDL_Renderer * renderer,
		612	float scaleX, float scaleY);
		613
		614	/**
		615	* \brief Get the drawing scale for the current target.
		616	*
		617	* \param renderer The renderer from which drawing scale should be queried.
		618	* \param scaleX A pointer filled in with the horizontal scaling factor
		619	* \param scaleY A pointer filled in with the vertical scaling factor
		620	*
		621	* \sa SDL_RenderSetScale()
		622	*/
		623	extern DECLSPEC void SDLCALL SDL_RenderGetScale(SDL_Renderer * renderer,
		624	float scaleX, float scaleY);
		625
		626	/**
		627	* \brief Set the color used for drawing operations (Rect, Line and Clear).
		628	*
		629	* \param renderer The renderer for which drawing color should be set.
		630	* \param r The red value used to draw on the rendering target.
		631	* \param g The green value used to draw on the rendering target.
		632	* \param b The blue value used to draw on the rendering target.
		633	* \param a The alpha value used to draw on the rendering target, usually
		634	* ::SDL_ALPHA_OPAQUE (255).
		635	*
		636	* \return 0 on success, or -1 on error
		637	*/
		638	extern DECLSPEC int SDLCALL SDL_SetRenderDrawColor(SDL_Renderer * renderer,
		639	Uint8 r, Uint8 g, Uint8 b,
		640	Uint8 a);
		641
		642	/**
		643	* \brief Get the color used for drawing operations (Rect, Line and Clear).
		644	*
		645	* \param renderer The renderer from which drawing color should be queried.
		646	* \param r A pointer to the red value used to draw on the rendering target.
		647	* \param g A pointer to the green value used to draw on the rendering target.
		648	* \param b A pointer to the blue value used to draw on the rendering target.
		649	* \param a A pointer to the alpha value used to draw on the rendering target,
		650	* usually ::SDL_ALPHA_OPAQUE (255).
		651	*
		652	* \return 0 on success, or -1 on error
		653	*/
		654	extern DECLSPEC int SDLCALL SDL_GetRenderDrawColor(SDL_Renderer * renderer,
		655	Uint8 * r, Uint8 * g, Uint8 * b,
		656	Uint8 * a);
		657
		658	/**
		659	* \brief Set the blend mode used for drawing operations (Fill and Line).
		660	*
		661	* \param renderer The renderer for which blend mode should be set.
		662	* \param blendMode ::SDL_BlendMode to use for blending.
		663	*
		664	* \return 0 on success, or -1 on error
		665	*
		666	* \note If the blend mode is not supported, the closest supported mode is
		667	* chosen.
		668	*
		669	* \sa SDL_GetRenderDrawBlendMode()
		670	*/
		671	extern DECLSPEC int SDLCALL SDL_SetRenderDrawBlendMode(SDL_Renderer * renderer,
		672	SDL_BlendMode blendMode);
		673
		674	/**
		675	* \brief Get the blend mode used for drawing operations.
		676	*
		677	* \param renderer The renderer from which blend mode should be queried.
		678	* \param blendMode A pointer filled in with the current blend mode.
		679	*
		680	* \return 0 on success, or -1 on error
		681	*
		682	* \sa SDL_SetRenderDrawBlendMode()
		683	*/
		684	extern DECLSPEC int SDLCALL SDL_GetRenderDrawBlendMode(SDL_Renderer * renderer,
		685	SDL_BlendMode *blendMode);
		686
		687	/**
		688	* \brief Clear the current rendering target with the drawing color
		689	*
		690	* This function clears the entire rendering target, ignoring the viewport and
		691	* the clip rectangle.
		692	*
		693	* \return 0 on success, or -1 on error
		694	*/
		695	extern DECLSPEC int SDLCALL SDL_RenderClear(SDL_Renderer * renderer);
		696
		697	/**
		698	* \brief Draw a point on the current rendering target.
		699	*
		700	* \param renderer The renderer which should draw a point.
		701	* \param x The x coordinate of the point.
		702	* \param y The y coordinate of the point.
		703	*
		704	* \return 0 on success, or -1 on error
		705	*/
		706	extern DECLSPEC int SDLCALL SDL_RenderDrawPoint(SDL_Renderer * renderer,
		707	int x, int y);
		708
		709	/**
		710	* \brief Draw multiple points on the current rendering target.
		711	*
		712	* \param renderer The renderer which should draw multiple points.
		713	* \param points The points to draw
		714	* \param count The number of points to draw
		715	*
		716	* \return 0 on success, or -1 on error
		717	*/
		718	extern DECLSPEC int SDLCALL SDL_RenderDrawPoints(SDL_Renderer * renderer,
		719	const SDL_Point * points,
		720	int count);
		721
		722	/**
		723	* \brief Draw a line on the current rendering target.
		724	*
		725	* \param renderer The renderer which should draw a line.
		726	* \param x1 The x coordinate of the start point.
		727	* \param y1 The y coordinate of the start point.
		728	* \param x2 The x coordinate of the end point.
		729	* \param y2 The y coordinate of the end point.
		730	*
		731	* \return 0 on success, or -1 on error
		732	*/
		733	extern DECLSPEC int SDLCALL SDL_RenderDrawLine(SDL_Renderer * renderer,
		734	int x1, int y1, int x2, int y2);
		735
		736	/**
		737	* \brief Draw a series of connected lines on the current rendering target.
		738	*
		739	* \param renderer The renderer which should draw multiple lines.
		740	* \param points The points along the lines
		741	* \param count The number of points, drawing count-1 lines
		742	*
		743	* \return 0 on success, or -1 on error
		744	*/
		745	extern DECLSPEC int SDLCALL SDL_RenderDrawLines(SDL_Renderer * renderer,
		746	const SDL_Point * points,
		747	int count);
		748
		749	/**
		750	* \brief Draw a rectangle on the current rendering target.
		751	*
		752	* \param renderer The renderer which should draw a rectangle.
		753	* \param rect A pointer to the destination rectangle, or NULL to outline the entire rendering target.
		754	*
		755	* \return 0 on success, or -1 on error
		756	*/
		757	extern DECLSPEC int SDLCALL SDL_RenderDrawRect(SDL_Renderer * renderer,
		758	const SDL_Rect * rect);
		759
		760	/**
		761	* \brief Draw some number of rectangles on the current rendering target.
		762	*
		763	* \param renderer The renderer which should draw multiple rectangles.
		764	* \param rects A pointer to an array of destination rectangles.
		765	* \param count The number of rectangles.
		766	*
		767	* \return 0 on success, or -1 on error
		768	*/
		769	extern DECLSPEC int SDLCALL SDL_RenderDrawRects(SDL_Renderer * renderer,
		770	const SDL_Rect * rects,
		771	int count);
		772
		773	/**
		774	* \brief Fill a rectangle on the current rendering target with the drawing color.
		775	*
		776	* \param renderer The renderer which should fill a rectangle.
		777	* \param rect A pointer to the destination rectangle, or NULL for the entire
		778	* rendering target.
		779	*
		780	* \return 0 on success, or -1 on error
		781	*/
		782	extern DECLSPEC int SDLCALL SDL_RenderFillRect(SDL_Renderer * renderer,
		783	const SDL_Rect * rect);
		784
		785	/**
		786	* \brief Fill some number of rectangles on the current rendering target with the drawing color.
		787	*
		788	* \param renderer The renderer which should fill multiple rectangles.
		789	* \param rects A pointer to an array of destination rectangles.
		790	* \param count The number of rectangles.
		791	*
		792	* \return 0 on success, or -1 on error
		793	*/
		794	extern DECLSPEC int SDLCALL SDL_RenderFillRects(SDL_Renderer * renderer,
		795	const SDL_Rect * rects,
		796	int count);
		797
		798	/**
		799	* \brief Copy a portion of the texture to the current rendering target.
		800	*
		801	* \param renderer The renderer which should copy parts of a texture.
		802	* \param texture The source texture.
		803	* \param srcrect A pointer to the source rectangle, or NULL for the entire
		804	* texture.
		805	* \param dstrect A pointer to the destination rectangle, or NULL for the
		806	* entire rendering target.
		807	*
		808	* \return 0 on success, or -1 on error
		809	*/
		810	extern DECLSPEC int SDLCALL SDL_RenderCopy(SDL_Renderer * renderer,
		811	SDL_Texture * texture,
		812	const SDL_Rect * srcrect,
		813	const SDL_Rect * dstrect);
		814
		815	/**
		816	* \brief Copy a portion of the source texture to the current rendering target, rotating it by angle around the given center
		817	*
		818	* \param renderer The renderer which should copy parts of a texture.
		819	* \param texture The source texture.
		820	* \param srcrect A pointer to the source rectangle, or NULL for the entire
		821	* texture.
		822	* \param dstrect A pointer to the destination rectangle, or NULL for the
		823	* entire rendering target.
		824	* \param angle An angle in degrees that indicates the rotation that will be applied to dstrect, rotating it in a clockwise direction
		825	* \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).
		826	* \param flip An SDL_RendererFlip value stating which flipping actions should be performed on the texture
		827	*
		828	* \return 0 on success, or -1 on error
		829	*/
		830	extern DECLSPEC int SDLCALL SDL_RenderCopyEx(SDL_Renderer * renderer,
		831	SDL_Texture * texture,
		832	const SDL_Rect * srcrect,
		833	const SDL_Rect * dstrect,
		834	const double angle,
		835	const SDL_Point *center,
		836	const SDL_RendererFlip flip);
		837
		838	/**
		839	* \brief Read pixels from the current rendering target.
		840	*
		841	* \param renderer The renderer from which pixels should be read.
		842	* \param rect A pointer to the rectangle to read, or NULL for the entire
		843	* render target.
		844	* \param format The desired format of the pixel data, or 0 to use the format
		845	* of the rendering target
		846	* \param pixels A pointer to be filled in with the pixel data
		847	* \param pitch The pitch of the pixels parameter.
		848	*
		849	* \return 0 on success, or -1 if pixel reading is not supported.
		850	*
		851	* \warning This is a very slow operation, and should not be used frequently.
		852	*/
		853	extern DECLSPEC int SDLCALL SDL_RenderReadPixels(SDL_Renderer * renderer,
		854	const SDL_Rect * rect,
		855	Uint32 format,
		856	void *pixels, int pitch);
		857
		858	/**
		859	* \brief Update the screen with rendering performed.
		860	*/
		861	extern DECLSPEC void SDLCALL SDL_RenderPresent(SDL_Renderer * renderer);
		862
		863	/**
		864	* \brief Destroy the specified texture.
		865	*
		866	* \sa SDL_CreateTexture()
		867	* \sa SDL_CreateTextureFromSurface()
		868	*/
		869	extern DECLSPEC void SDLCALL SDL_DestroyTexture(SDL_Texture * texture);
		870
		871	/**
		872	* \brief Destroy the rendering context for a window and free associated
		873	* textures.
		874	*
		875	* \sa SDL_CreateRenderer()
		876	*/
		877	extern DECLSPEC void SDLCALL SDL_DestroyRenderer(SDL_Renderer * renderer);
		878
		879
		880	/**
		881	* \brief Bind the texture to the current OpenGL/ES/ES2 context for use with
		882	* OpenGL instructions.
		883	*
		884	* \param texture The SDL texture to bind
		885	* \param texw A pointer to a float that will be filled with the texture width
		886	* \param texh A pointer to a float that will be filled with the texture height
		887	*
		888	* \return 0 on success, or -1 if the operation is not supported
		889	*/
		890	extern DECLSPEC int SDLCALL SDL_GL_BindTexture(SDL_Texture texture, float texw, float *texh);
		891
		892	/**
		893	* \brief Unbind a texture from the current OpenGL/ES/ES2 context.
		894	*
		895	* \param texture The SDL texture to unbind
		896	*
		897	* \return 0 on success, or -1 if the operation is not supported
		898	*/
		899	extern DECLSPEC int SDLCALL SDL_GL_UnbindTexture(SDL_Texture *texture);
		900
		901
		902	/* Ends C function definitions when using C++ */
		903	#ifdef __cplusplus
		904	}
		905	#endif
		906	#include "close_code.h"
		907
		908	#endif /* SDL_render_h_ */
		909
		910	/* vi: set ts=4 sw=4 expandtab: */

Subversion Repositories Games.Prince of Persia

Games.Prince of Persia/SDL2.framework/Headers/SDL_render.h – Rev 1