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Add SDL_MEMALIGNED flag for SDL_Surface using aligned memory.

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If an SDL_Surface has an aligned memory pointers, it should be freed
using SDL_SIMDFree() (will be used by SDL_ttf).
This commit is contained in:
Sylvain Becker 2019-01-31 11:45:31 +01:00
parent 7b8bac5958
commit e5d194e902
2 changed files with 10 additions and 2 deletions
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1
include/SDL_surface.h
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@ -53,6 +53,7 @@ extern "C" {
#define SDL_PREALLOC 0x00000001 /**< Surface uses preallocated memory */ #define SDL_PREALLOC 0x00000001 /**< Surface uses preallocated memory */
#define SDL_RLEACCEL 0x00000002 /**< Surface is RLE encoded */ #define SDL_RLEACCEL 0x00000002 /**< Surface is RLE encoded */
#define SDL_DONTFREE 0x00000004 /**< Surface is referenced internally */ #define SDL_DONTFREE 0x00000004 /**< Surface is referenced internally */
#define SDL_MEMALIGNED 0x00000008 /**< Surface uses aligned memory */
/* @} *//* Surface flags */ /* @} *//* Surface flags */
/** /**

9
src/video/SDL_surface.c
View File

@ -26,6 +26,7 @@
#include "SDL_RLEaccel_c.h" #include "SDL_RLEaccel_c.h"
#include "SDL_pixels_c.h" #include "SDL_pixels_c.h"
#include "SDL_yuv_c.h" #include "SDL_yuv_c.h"
#include "../../cpuinfo/SDL_simd.h"
/* Check to make sure we can safely check multiplication of surface w and pitch and it won't overflow size_t */ /* Check to make sure we can safely check multiplication of surface w and pitch and it won't overflow size_t */
@ -1258,7 +1259,13 @@ SDL_FreeSurface(SDL_Surface * surface)
SDL_FreeFormat(surface->format); SDL_FreeFormat(surface->format);
surface->format = NULL; surface->format = NULL;
} }
if (!(surface->flags & SDL_PREALLOC)) { if (surface->flags & SDL_PREALLOC) {
/* Don't free */
} else if (surface->flags & SDL_MEMALIGNED) {
/* Free aligned */
SDL_SIMDFree(surface->pixels);
} else {
/* Normal */
SDL_free(surface->pixels); SDL_free(surface->pixels);
} }
if (surface->map) { if (surface->map) {