SDL  2.0
SDL_surface.h
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2016 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_surface.h
24  *
25  * Header file for ::SDL_Surface definition and management functions.
26  */
27 
28 #ifndef _SDL_surface_h
29 #define _SDL_surface_h
30 
31 #include "SDL_stdinc.h"
32 #include "SDL_pixels.h"
33 #include "SDL_rect.h"
34 #include "SDL_blendmode.h"
35 #include "SDL_rwops.h"
36 
37 #include "begin_code.h"
38 /* Set up for C function definitions, even when using C++ */
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
42 
43 /**
44  * \name Surface flags
45  *
46  * These are the currently supported flags for the ::SDL_Surface.
47  *
48  * \internal
49  * Used internally (read-only).
50  */
51 /* @{ */
52 #define SDL_SWSURFACE 0 /**< Just here for compatibility */
53 #define SDL_PREALLOC 0x00000001 /**< Surface uses preallocated memory */
54 #define SDL_RLEACCEL 0x00000002 /**< Surface is RLE encoded */
55 #define SDL_DONTFREE 0x00000004 /**< Surface is referenced internally */
56 /* @} *//* Surface flags */
57 
58 /**
59  * Evaluates to true if the surface needs to be locked before access.
60  */
61 #define SDL_MUSTLOCK(S) (((S)->flags & SDL_RLEACCEL) != 0)
62 
63 /**
64  * \brief A collection of pixels used in software blitting.
65  *
66  * \note This structure should be treated as read-only, except for \c pixels,
67  * which, if not NULL, contains the raw pixel data for the surface.
68  */
69 typedef struct SDL_Surface
70 {
71  Uint32 flags; /**< Read-only */
72  SDL_PixelFormat *format; /**< Read-only */
73  int w, h; /**< Read-only */
74  int pitch; /**< Read-only */
75  void *pixels; /**< Read-write */
76 
77  /** Application data associated with the surface */
78  void *userdata; /**< Read-write */
79 
80  /** information needed for surfaces requiring locks */
81  int locked; /**< Read-only */
82  void *lock_data; /**< Read-only */
83 
84  /** clipping information */
85  SDL_Rect clip_rect; /**< Read-only */
86 
87  /** info for fast blit mapping to other surfaces */
88  struct SDL_BlitMap *map; /**< Private */
89 
90  /** Reference count -- used when freeing surface */
91  int refcount; /**< Read-mostly */
92 } SDL_Surface;
93 
94 /**
95  * \brief The type of function used for surface blitting functions.
96  */
97 typedef int (*SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
98  struct SDL_Surface * dst, SDL_Rect * dstrect);
99 
100 /**
101  * Allocate and free an RGB surface.
102  *
103  * If the depth is 4 or 8 bits, an empty palette is allocated for the surface.
104  * If the depth is greater than 8 bits, the pixel format is set using the
105  * flags '[RGB]mask'.
106  *
107  * If the function runs out of memory, it will return NULL.
108  *
109  * \param flags The \c flags are obsolete and should be set to 0.
110  * \param width The width in pixels of the surface to create.
111  * \param height The height in pixels of the surface to create.
112  * \param depth The depth in bits of the surface to create.
113  * \param Rmask The red mask of the surface to create.
114  * \param Gmask The green mask of the surface to create.
115  * \param Bmask The blue mask of the surface to create.
116  * \param Amask The alpha mask of the surface to create.
117  */
119  (Uint32 flags, int width, int height, int depth,
120  Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
122  (Uint32 flags, int width, int height, int depth, Uint32 format);
124  int width,
125  int height,
126  int depth,
127  int pitch,
128  Uint32 Rmask,
129  Uint32 Gmask,
130  Uint32 Bmask,
131  Uint32 Amask);
133  (void *pixels, int width, int height, int depth, int pitch, Uint32 format);
134 extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface * surface);
135 
136 /**
137  * \brief Set the palette used by a surface.
138  *
139  * \return 0, or -1 if the surface format doesn't use a palette.
140  *
141  * \note A single palette can be shared with many surfaces.
142  */
144  SDL_Palette * palette);
145 
146 /**
147  * \brief Sets up a surface for directly accessing the pixels.
148  *
149  * Between calls to SDL_LockSurface() / SDL_UnlockSurface(), you can write
150  * to and read from \c surface->pixels, using the pixel format stored in
151  * \c surface->format. Once you are done accessing the surface, you should
152  * use SDL_UnlockSurface() to release it.
153  *
154  * Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates
155  * to 0, then you can read and write to the surface at any time, and the
156  * pixel format of the surface will not change.
157  *
158  * No operating system or library calls should be made between lock/unlock
159  * pairs, as critical system locks may be held during this time.
160  *
161  * SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked.
162  *
163  * \sa SDL_UnlockSurface()
164  */
165 extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface * surface);
166 /** \sa SDL_LockSurface() */
167 extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface * surface);
168 
169 /**
170  * Load a surface from a seekable SDL data stream (memory or file).
171  *
172  * If \c freesrc is non-zero, the stream will be closed after being read.
173  *
174  * The new surface should be freed with SDL_FreeSurface().
175  *
176  * \return the new surface, or NULL if there was an error.
177  */
179  int freesrc);
180 
181 /**
182  * Load a surface from a file.
183  *
184  * Convenience macro.
185  */
186 #define SDL_LoadBMP(file) SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1)
187 
188 /**
189  * Save a surface to a seekable SDL data stream (memory or file).
190  *
191  * Surfaces with a 24-bit, 32-bit and paletted 8-bit format get saved in the
192  * BMP directly. Other RGB formats with 8-bit or higher get converted to a
193  * 24-bit surface or, if they have an alpha mask or a colorkey, to a 32-bit
194  * surface before they are saved. YUV and paletted 1-bit and 4-bit formats are
195  * not supported.
196  *
197  * If \c freedst is non-zero, the stream will be closed after being written.
198  *
199  * \return 0 if successful or -1 if there was an error.
200  */
202  (SDL_Surface * surface, SDL_RWops * dst, int freedst);
203 
204 /**
205  * Save a surface to a file.
206  *
207  * Convenience macro.
208  */
209 #define SDL_SaveBMP(surface, file) \
210  SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1)
211 
212 /**
213  * \brief Sets the RLE acceleration hint for a surface.
214  *
215  * \return 0 on success, or -1 if the surface is not valid
216  *
217  * \note If RLE is enabled, colorkey and alpha blending blits are much faster,
218  * but the surface must be locked before directly accessing the pixels.
219  */
220 extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
221  int flag);
222 
223 /**
224  * \brief Sets the color key (transparent pixel) in a blittable surface.
225  *
226  * \param surface The surface to update
227  * \param flag Non-zero to enable colorkey and 0 to disable colorkey
228  * \param key The transparent pixel in the native surface format
229  *
230  * \return 0 on success, or -1 if the surface is not valid
231  *
232  * You can pass SDL_RLEACCEL to enable RLE accelerated blits.
233  */
234 extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
235  int flag, Uint32 key);
236 
237 /**
238  * \brief Gets the color key (transparent pixel) in a blittable surface.
239  *
240  * \param surface The surface to update
241  * \param key A pointer filled in with the transparent pixel in the native
242  * surface format
243  *
244  * \return 0 on success, or -1 if the surface is not valid or colorkey is not
245  * enabled.
246  */
247 extern DECLSPEC int SDLCALL SDL_GetColorKey(SDL_Surface * surface,
248  Uint32 * key);
249 
250 /**
251  * \brief Set an additional color value used in blit operations.
252  *
253  * \param surface The surface to update.
254  * \param r The red color value multiplied into blit operations.
255  * \param g The green color value multiplied into blit operations.
256  * \param b The blue color value multiplied into blit operations.
257  *
258  * \return 0 on success, or -1 if the surface is not valid.
259  *
260  * \sa SDL_GetSurfaceColorMod()
261  */
263  Uint8 r, Uint8 g, Uint8 b);
264 
265 
266 /**
267  * \brief Get the additional color value used in blit operations.
268  *
269  * \param surface The surface to query.
270  * \param r A pointer filled in with the current red color value.
271  * \param g A pointer filled in with the current green color value.
272  * \param b A pointer filled in with the current blue color value.
273  *
274  * \return 0 on success, or -1 if the surface is not valid.
275  *
276  * \sa SDL_SetSurfaceColorMod()
277  */
279  Uint8 * r, Uint8 * g,
280  Uint8 * b);
281 
282 /**
283  * \brief Set an additional alpha value used in blit operations.
284  *
285  * \param surface The surface to update.
286  * \param alpha The alpha value multiplied into blit operations.
287  *
288  * \return 0 on success, or -1 if the surface is not valid.
289  *
290  * \sa SDL_GetSurfaceAlphaMod()
291  */
293  Uint8 alpha);
294 
295 /**
296  * \brief Get the additional alpha value used in blit operations.
297  *
298  * \param surface The surface to query.
299  * \param alpha A pointer filled in with the current alpha value.
300  *
301  * \return 0 on success, or -1 if the surface is not valid.
302  *
303  * \sa SDL_SetSurfaceAlphaMod()
304  */
306  Uint8 * alpha);
307 
308 /**
309  * \brief Set the blend mode used for blit operations.
310  *
311  * \param surface The surface to update.
312  * \param blendMode ::SDL_BlendMode to use for blit blending.
313  *
314  * \return 0 on success, or -1 if the parameters are not valid.
315  *
316  * \sa SDL_GetSurfaceBlendMode()
317  */
320 
321 /**
322  * \brief Get the blend mode used for blit operations.
323  *
324  * \param surface The surface to query.
325  * \param blendMode A pointer filled in with the current blend mode.
326  *
327  * \return 0 on success, or -1 if the surface is not valid.
328  *
329  * \sa SDL_SetSurfaceBlendMode()
330  */
333 
334 /**
335  * Sets the clipping rectangle for the destination surface in a blit.
336  *
337  * If the clip rectangle is NULL, clipping will be disabled.
338  *
339  * If the clip rectangle doesn't intersect the surface, the function will
340  * return SDL_FALSE and blits will be completely clipped. Otherwise the
341  * function returns SDL_TRUE and blits to the surface will be clipped to
342  * the intersection of the surface area and the clipping rectangle.
343  *
344  * Note that blits are automatically clipped to the edges of the source
345  * and destination surfaces.
346  */
348  const SDL_Rect * rect);
349 
350 /**
351  * Gets the clipping rectangle for the destination surface in a blit.
352  *
353  * \c rect must be a pointer to a valid rectangle which will be filled
354  * with the correct values.
355  */
356 extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface * surface,
357  SDL_Rect * rect);
358 
359 /**
360  * Creates a new surface of the specified format, and then copies and maps
361  * the given surface to it so the blit of the converted surface will be as
362  * fast as possible. If this function fails, it returns NULL.
363  *
364  * The \c flags parameter is passed to SDL_CreateRGBSurface() and has those
365  * semantics. You can also pass ::SDL_RLEACCEL in the flags parameter and
366  * SDL will try to RLE accelerate colorkey and alpha blits in the resulting
367  * surface.
368  */
370  (SDL_Surface * src, const SDL_PixelFormat * fmt, Uint32 flags);
373 
374 /**
375  * \brief Copy a block of pixels of one format to another format
376  *
377  * \return 0 on success, or -1 if there was an error
378  */
379 extern DECLSPEC int SDLCALL SDL_ConvertPixels(int width, int height,
380  Uint32 src_format,
381  const void * src, int src_pitch,
382  Uint32 dst_format,
383  void * dst, int dst_pitch);
384 
385 /**
386  * Performs a fast fill of the given rectangle with \c color.
387  *
388  * If \c rect is NULL, the whole surface will be filled with \c color.
389  *
390  * The color should be a pixel of the format used by the surface, and
391  * can be generated by the SDL_MapRGB() function.
392  *
393  * \return 0 on success, or -1 on error.
394  */
395 extern DECLSPEC int SDLCALL SDL_FillRect
396  (SDL_Surface * dst, const SDL_Rect * rect, Uint32 color);
397 extern DECLSPEC int SDLCALL SDL_FillRects
398  (SDL_Surface * dst, const SDL_Rect * rects, int count, Uint32 color);
399 
400 /**
401  * Performs a fast blit from the source surface to the destination surface.
402  *
403  * This assumes that the source and destination rectangles are
404  * the same size. If either \c srcrect or \c dstrect are NULL, the entire
405  * surface (\c src or \c dst) is copied. The final blit rectangles are saved
406  * in \c srcrect and \c dstrect after all clipping is performed.
407  *
408  * \return If the blit is successful, it returns 0, otherwise it returns -1.
409  *
410  * The blit function should not be called on a locked surface.
411  *
412  * The blit semantics for surfaces with and without blending and colorkey
413  * are defined as follows:
414  * \verbatim
415  RGBA->RGB:
416  Source surface blend mode set to SDL_BLENDMODE_BLEND:
417  alpha-blend (using the source alpha-channel and per-surface alpha)
418  SDL_SRCCOLORKEY ignored.
419  Source surface blend mode set to SDL_BLENDMODE_NONE:
420  copy RGB.
421  if SDL_SRCCOLORKEY set, only copy the pixels matching the
422  RGB values of the source color key, ignoring alpha in the
423  comparison.
424 
425  RGB->RGBA:
426  Source surface blend mode set to SDL_BLENDMODE_BLEND:
427  alpha-blend (using the source per-surface alpha)
428  Source surface blend mode set to SDL_BLENDMODE_NONE:
429  copy RGB, set destination alpha to source per-surface alpha value.
430  both:
431  if SDL_SRCCOLORKEY set, only copy the pixels matching the
432  source color key.
433 
434  RGBA->RGBA:
435  Source surface blend mode set to SDL_BLENDMODE_BLEND:
436  alpha-blend (using the source alpha-channel and per-surface alpha)
437  SDL_SRCCOLORKEY ignored.
438  Source surface blend mode set to SDL_BLENDMODE_NONE:
439  copy all of RGBA to the destination.
440  if SDL_SRCCOLORKEY set, only copy the pixels matching the
441  RGB values of the source color key, ignoring alpha in the
442  comparison.
443 
444  RGB->RGB:
445  Source surface blend mode set to SDL_BLENDMODE_BLEND:
446  alpha-blend (using the source per-surface alpha)
447  Source surface blend mode set to SDL_BLENDMODE_NONE:
448  copy RGB.
449  both:
450  if SDL_SRCCOLORKEY set, only copy the pixels matching the
451  source color key.
452  \endverbatim
453  *
454  * You should call SDL_BlitSurface() unless you know exactly how SDL
455  * blitting works internally and how to use the other blit functions.
456  */
457 #define SDL_BlitSurface SDL_UpperBlit
458 
459 /**
460  * This is the public blit function, SDL_BlitSurface(), and it performs
461  * rectangle validation and clipping before passing it to SDL_LowerBlit()
462  */
463 extern DECLSPEC int SDLCALL SDL_UpperBlit
464  (SDL_Surface * src, const SDL_Rect * srcrect,
465  SDL_Surface * dst, SDL_Rect * dstrect);
466 
467 /**
468  * This is a semi-private blit function and it performs low-level surface
469  * blitting only.
470  */
471 extern DECLSPEC int SDLCALL SDL_LowerBlit
472  (SDL_Surface * src, SDL_Rect * srcrect,
473  SDL_Surface * dst, SDL_Rect * dstrect);
474 
475 /**
476  * \brief Perform a fast, low quality, stretch blit between two surfaces of the
477  * same pixel format.
478  *
479  * \note This function uses a static buffer, and is not thread-safe.
480  */
482  const SDL_Rect * srcrect,
483  SDL_Surface * dst,
484  const SDL_Rect * dstrect);
485 
486 #define SDL_BlitScaled SDL_UpperBlitScaled
487 
488 /**
489  * This is the public scaled blit function, SDL_BlitScaled(), and it performs
490  * rectangle validation and clipping before passing it to SDL_LowerBlitScaled()
491  */
493  (SDL_Surface * src, const SDL_Rect * srcrect,
494  SDL_Surface * dst, SDL_Rect * dstrect);
495 
496 /**
497  * This is a semi-private blit function and it performs low-level surface
498  * scaled blitting only.
499  */
501  (SDL_Surface * src, SDL_Rect * srcrect,
502  SDL_Surface * dst, SDL_Rect * dstrect);
503 
504 
505 /* Ends C function definitions when using C++ */
506 #ifdef __cplusplus
507 }
508 #endif
509 #include "close_code.h"
510 
511 #endif /* _SDL_surface_h */
512 
513 /* vi: set ts=4 sw=4 expandtab: */
SDL_Surface * SDL_CreateRGBSurfaceWithFormatFrom(void *pixels, int width, int height, int depth, int pitch, Uint32 format)
Definition: SDL_surface.c:158
GLenum GLenum dst
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1565
int SDL_GetSurfaceColorMod(SDL_Surface *surface, Uint8 *r, Uint8 *g, Uint8 *b)
Get the additional color value used in blit operations.
Definition: SDL_surface.c:371
void SDL_FreeSurface(SDL_Surface *surface)
Definition: SDL_surface.c:1151
GLdouble GLdouble GLdouble r
Definition: SDL_opengl.h:2072
int SDL_LockSurface(SDL_Surface *surface)
Sets up a surface for directly accessing the pixels.
Definition: SDL_surface.c:838
GLint GLint GLsizei width
Definition: SDL_opengl.h:1565
SDL_Surface * SDL_CreateRGBSurfaceFrom(void *pixels, int width, int height, int depth, int pitch, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
Definition: SDL_surface.c:134
SDL_BlendMode
The blend mode used in SDL_RenderCopy() and drawing operations.
Definition: SDL_blendmode.h:40
int SDL_SetSurfaceRLE(SDL_Surface *surface, int flag)
Sets the RLE acceleration hint for a surface.
Definition: SDL_surface.c:191
GLuint GLuint GLsizei count
Definition: SDL_opengl.h:1564
SDL_Rect rect
Definition: testrelative.c:27
int SDL_UpperBlit(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect)
Definition: SDL_surface.c:558
SDL_Surface * SDL_CreateRGBSurfaceWithFormat(Uint32 flags, int width, int height, int depth, Uint32 format)
Definition: SDL_surface.c:36
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
int SDL_SaveBMP_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst)
Definition: SDL_bmp.c:460
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1565
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:159
GLint GLint GLsizei GLsizei height
Definition: SDL_opengl.h:1565
int SDL_ConvertPixels(int width, int height, Uint32 src_format, const void *src, int src_pitch, Uint32 dst_format, void *dst, int dst_pitch)
Copy a block of pixels of one format to another format.
Definition: SDL_surface.c:1057
GLfloat GLfloat GLfloat alpha
int SDL_SoftStretch(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect)
Perform a fast, low quality, stretch blit between two surfaces of the same pixel format.
Definition: SDL_stretch.c:203
int SDL_GetSurfaceAlphaMod(SDL_Surface *surface, Uint8 *alpha)
Get the additional alpha value used in blit operations.
Definition: SDL_surface.c:413
Uint32 flags
Definition: SDL_surface.h:71
static SDL_BlendMode blendMode
Definition: testdraw2.c:34
GLboolean GLboolean g
int SDL_SetSurfaceColorMod(SDL_Surface *surface, Uint8 r, Uint8 g, Uint8 b)
Set an additional color value used in blit operations.
Definition: SDL_surface.c:345
struct SDL_BlitMap * map
Definition: SDL_surface.h:88
#define DECLSPEC
Definition: SDL_internal.h:30
SDL_bool SDL_SetClipRect(SDL_Surface *surface, const SDL_Rect *rect)
Definition: SDL_surface.c:492
SDL_Surface * SDL_CreateRGBSurface(Uint32 flags, int width, int height, int depth, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
Definition: SDL_surface.c:114
void * pixels
Definition: SDL_surface.h:75
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:143
void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
Definition: SDL_surface.c:516
int SDL_LowerBlit(SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect)
Definition: SDL_surface.c:535
int SDL_SetColorKey(SDL_Surface *surface, int flag, Uint32 key)
Sets the color key (transparent pixel) in a blittable surface.
Definition: SDL_surface.c:212
int SDL_SetSurfacePalette(SDL_Surface *surface, SDL_Palette *palette)
Set the palette used by a surface.
Definition: SDL_surface.c:177
int SDL_GetSurfaceBlendMode(SDL_Surface *surface, SDL_BlendMode *blendMode)
Get the blend mode used for blit operations.
Definition: SDL_surface.c:463
int SDL_LowerBlitScaled(SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect)
Definition: SDL_surface.c:811
int SDL_FillRect(SDL_Surface *dst, const SDL_Rect *rect, Uint32 color)
Definition: SDL_fillrect.c:237
SDL_Rect clip_rect
Definition: SDL_surface.h:85
SDL_bool
Definition: SDL_stdinc.h:130
SDL_PixelFormat * format
Definition: SDL_surface.h:72
GLint GLint GLsizei GLsizei GLsizei depth
Definition: SDL_opengl.h:1565
int(* SDL_blit)(struct SDL_Surface *src, SDL_Rect *srcrect, struct SDL_Surface *dst, SDL_Rect *dstrect)
The type of function used for surface blitting functions.
Definition: SDL_surface.h:97
SDL_Rect rects[MAX_RECTS]
GLuint color
int SDL_FillRects(SDL_Surface *dst, const SDL_Rect *rects, int count, Uint32 color)
Definition: SDL_fillrect.c:327
int SDL_SetSurfaceAlphaMod(SDL_Surface *surface, Uint8 alpha)
Set an additional alpha value used in blit operations.
Definition: SDL_surface.c:390
int SDL_UpperBlitScaled(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect)
Definition: SDL_surface.c:657
Uint32 pixel_format
Definition: testoverlay2.c:152
void SDL_UnlockSurface(SDL_Surface *surface)
Definition: SDL_surface.c:859
GLbitfield flags
int SDL_GetColorKey(SDL_Surface *surface, Uint32 *key)
Gets the color key (transparent pixel) in a blittable surface.
Definition: SDL_surface.c:257
SDL_Surface * SDL_ConvertSurfaceFormat(SDL_Surface *src, Uint32 pixel_format, Uint32 flags)
Definition: SDL_surface.c:1001
SDL_Surface * SDL_LoadBMP_RW(SDL_RWops *src, int freesrc)
Definition: SDL_bmp.c:87
GLenum src
#define SDLCALL
Definition: SDL_internal.h:31
void * lock_data
Definition: SDL_surface.h:82
GLboolean GLboolean GLboolean b
void * userdata
Definition: SDL_surface.h:78
SDL_Surface * SDL_ConvertSurface(SDL_Surface *src, const SDL_PixelFormat *fmt, Uint32 flags)
Definition: SDL_surface.c:877
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
int SDL_SetSurfaceBlendMode(SDL_Surface *surface, SDL_BlendMode blendMode)
Set the blend mode used for blit operations.
Definition: SDL_surface.c:426