31 #include "../../SDL_internal.h" 33 #if defined(__WIN32__) 34 #include "../../core/windows/SDL_windows.h" 65 #define MAX(a,b) (((a) > (b)) ? (a) : (b)) 77 #define GUARD_ROWS (2) 107 int *dstwidth,
int *dstheight,
108 double *cangle,
double *sangle)
111 int angle90 = (int)(angle/90);
112 if(angle90 == angle/90) {
114 if(angle90 < 0) angle90 += 4;
119 *sangle = angle90 == 1 ? -1 : 1;
123 *cangle = angle90 == 0 ? 1 : -1;
127 double x,
y, cx, cy, sx, sy;
129 int dstwidthhalf, dstheighthalf;
133 radangle = angle * (M_PI / -180.0);
136 x = (double)(width / 2);
137 y = (double)(height / 2);
143 dstwidthhalf =
MAX((
int)
145 dstheighthalf =
MAX((
int)
147 *dstwidth = 2 * dstwidthhalf;
148 *dstheight = 2 * dstheighthalf;
155 int *sincx,
int *sincy,
int *signx,
int *signy)
162 case 0: *sincx =
bpp; *sincy = pitch - src->
w * *sincx; *signx = *signy = 1;
break;
163 case 1: *sincx = -pitch; *sincy = bpp - *sincx * src->
h; *signx = 1; *signy = -1;
break;
164 case 2: *sincx = -
bpp; *sincy = -src->
w * *sincx - pitch; *signx = *signy = -1;
break;
165 case 3:
default: *sincx = pitch; *sincy = -*sincx * src->
h -
bpp; *signx = -1; *signy = 1;
break;
176 #define TRANSFORM_SURFACE_90(pixelType) \ 177 int dy, dincy = dst->pitch - dst->w*sizeof(pixelType), sincx, sincy, signx, signy; \ 178 Uint8 *sp = (Uint8*)src->pixels, *dp = (Uint8*)dst->pixels, *de; \ 180 computeSourceIncrements90(src, sizeof(pixelType), angle, flipx, flipy, &sincx, &sincy, &signx, &signy); \ 181 if (signx < 0) sp += (src->w-1)*sizeof(pixelType); \ 182 if (signy < 0) sp += (src->h-1)*src->pitch; \ 184 for (dy = 0; dy < dst->h; sp += sincy, dp += dincy, dy++) { \ 185 if (sincx == sizeof(pixelType)) { \ 186 SDL_memcpy(dp, sp, dst->w*sizeof(pixelType)); \ 187 sp += dst->w*sizeof(pixelType); \ 188 dp += dst->w*sizeof(pixelType); \ 190 for (de = dp + dst->w*sizeof(pixelType); dp != de; sp += sincx, dp += sizeof(pixelType)) { \ 191 *(pixelType*)dp = *(pixelType*)sp; \ 208 #undef TRANSFORM_SURFACE_90 232 int x,
y,
t1, t2, dx, dy, xd, yd, sdx, sdy, ax, ay, ex, ey, sw, sh;
240 xd = ((src->
w - dst->
w) << 15);
241 yd = ((src->
h - dst->
h) << 15);
242 ax = (cx << 16) - (icos * cx);
243 ay = (cy << 16) - (isin * cx);
247 gap = dst->
pitch - dst->
w * 4;
253 for (y = 0; y < dst->
h; y++) {
255 sdx = (ax + (isin * dy)) + xd;
256 sdy = (ay - (icos * dy)) + yd;
257 for (x = 0; x < dst->
w; x++) {
260 if (flipx) dx = sw - dx;
261 if (flipy) dy = sh - dy;
262 if ((dx > -1) && (dy > -1) && (dx < (src->
w-1)) && (dy < (src->
h-1))) {
267 sp += (src->
pitch/4);
272 cswap = c00; c00=c01; c01=cswap;
273 cswap = c10; c10=c11; c11=cswap;
276 cswap = c00; c00=c10; c10=cswap;
277 cswap = c01; c01=c11; c11=cswap;
284 t1 = ((((c01.
r - c00.
r) * ex) >> 16) + c00.
r) & 0xff;
285 t2 = ((((c11.
r - c10.
r) * ex) >> 16) + c10.
r) & 0xff;
286 pc->
r = (((t2 -
t1) * ey) >> 16) + t1;
287 t1 = ((((c01.
g - c00.
g) * ex) >> 16) + c00.
g) & 0xff;
288 t2 = ((((c11.
g - c10.
g) * ex) >> 16) + c10.
g) & 0xff;
289 pc->
g = (((t2 -
t1) * ey) >> 16) + t1;
290 t1 = ((((c01.
b - c00.
b) * ex) >> 16) + c00.
b) & 0xff;
291 t2 = ((((c11.
b - c10.
b) * ex) >> 16) + c10.
b) & 0xff;
292 pc->
b = (((t2 -
t1) * ey) >> 16) + t1;
293 t1 = ((((c01.
a - c00.
a) * ex) >> 16) + c00.
a) & 0xff;
294 t2 = ((((c11.
a - c10.
a) * ex) >> 16) + c10.
a) & 0xff;
295 pc->
a = (((t2 -
t1) * ey) >> 16) + t1;
304 for (y = 0; y < dst->
h; y++) {
306 sdx = (ax + (isin * dy)) + xd;
307 sdy = (ay - (icos * dy)) + yd;
308 for (x = 0; x < dst->
w; x++) {
311 if ((
unsigned)dx < (unsigned)src->
w && (
unsigned)dy < (unsigned)src->
h) {
312 if(flipx) dx = sw - dx;
313 if(flipy) dy = sh - dy;
346 int x,
y, dx, dy, xd, yd, sdx, sdy, ax, ay;
353 xd = ((src->
w - dst->
w) << 15);
354 yd = ((src->
h - dst->
h) << 15);
355 ax = (cx << 16) - (icos * cx);
356 ay = (cy << 16) - (isin * cx);
358 gap = dst->
pitch - dst->
w;
366 for (y = 0; y < dst->
h; y++) {
368 sdx = (ax + (isin * dy)) + xd;
369 sdy = (ay - (icos * dy)) + yd;
370 for (x = 0; x < dst->
w; x++) {
373 if ((
unsigned)dx < (unsigned)src->
w && (
unsigned)dy < (unsigned)src->
h) {
374 if (flipx) dx = (src->
w-1)-dx;
375 if (flipy) dy = (src->
h-1)-dy;
415 SDLgfx_rotateSurface(
SDL_Surface *
src,
double angle,
int centerx,
int centery,
int smooth,
int flipx,
int flipy,
int dstwidth,
int dstheight,
double cangle,
double sangle)
423 double sangleinv, cangleinv;
441 sangleinv = sangle*65536.0;
442 cangleinv = cangle*65536.0;
449 if (rz_dst !=
NULL) {
467 rz_dst->
h = dstheight;
471 if (colorKeyAvailable ==
SDL_TRUE) {
501 angle90 = (int)(angle/90);
502 if (angle90 == angle/90) {
504 if (angle90 < 0) angle90 += 4;
523 flipx, flipy, smooth);
#define SDL_UnlockSurface
GLint GLint GLint GLint GLint x
SDL_BlendMode
The blend mode used in SDL_RenderCopy() and drawing operations.
static void computeSourceIncrements90(SDL_Surface *src, int bpp, int angle, int flipx, int flipy, int *sincx, int *sincy, int *signx, int *signy)
A collection of pixels used in software blitting.
set set set set set set set macro pixldst1 abits if abits op else op endif endm macro pixldst2 abits if abits op else op endif endm macro pixldst4 abits if abits op else op endif endm macro pixldst0 abits op endm macro pixldst3 mem_operand op endm macro pixldst30 mem_operand op endm macro pixldst abits if abits elseif abits elseif abits elseif abits elseif abits pixldst0 abits else pixldst0 abits pixldst0 abits pixldst0 abits pixldst0 abits endif elseif abits else pixldst0 abits pixldst0 abits endif elseif abits else error unsupported bpp *numpix else pixst endif endm macro pixld1_s mem_operand if asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl elseif asr adds SRC_WIDTH_FIXED bpl add asl mov asr adds SRC_WIDTH_FIXED bpl add asl else error unsupported endif endm macro pixld2_s mem_operand if mov asr add asl add asl mov asr sub UNIT_X add asl mov asr add asl add asl mov asr add UNIT_X add asl else pixld1_s mem_operand pixld1_s mem_operand endif endm macro pixld0_s mem_operand if asr adds SRC_WIDTH_FIXED bpl add asl elseif asr adds SRC_WIDTH_FIXED bpl add asl endif endm macro pixld_s_internal mem_operand if mem_operand pixld2_s mem_operand pixdeinterleave basereg elseif mem_operand elseif mem_operand elseif mem_operand elseif mem_operand pixld0_s mem_operand else pixld0_s mem_operand pixld0_s mem_operand pixld0_s mem_operand pixld0_s mem_operand endif elseif mem_operand else pixld0_s mem_operand pixld0_s mem_operand endif elseif mem_operand else error unsupported mem_operand if bpp mem_operand endif endm macro vuzp8 reg2 vuzp d d ®2 endm macro vzip8 reg2 vzip d d ®2 endm macro pixdeinterleave basereg basereg basereg basereg basereg endif endm macro pixinterleave basereg basereg basereg basereg basereg endif endm macro PF boost_increment endif if endif PF tst PF addne PF subne PF cmp ORIG_W if endif if endif if endif PF subge ORIG_W PF subges if endif if endif if endif endif endm macro cache_preload_simple endif if dst_r_bpp pld [DST_R, #(PREFETCH_DISTANCE_SIMPLE *dst_r_bpp/8)] endif if mask_bpp pld if[MASK, #(PREFETCH_DISTANCE_SIMPLE *mask_bpp/8)] endif endif endm macro fetch_mask_pixblock pixld mask_basereg pixblock_size MASK endm macro ensure_destination_ptr_alignment process_pixblock_tail_head if beq irp local skip1(dst_w_bpp<=(lowbit *8)) &&((lowbit *8)<(pixblock_size *dst_w_bpp)) .if lowbit< 16 tst DST_R
static void transformSurfaceRGBA90(SDL_Surface *src, SDL_Surface *dst, int angle, int flipx, int flipy)
set set set set set set set macro pixldst1 abits if abits op else op endif endm macro pixldst2 abits if abits op else op endif endm macro pixldst4 abits if abits op else op endif endm macro pixldst0 abits op endm macro pixldst3 mem_operand op endm macro pixldst30 mem_operand op endm macro pixldst abits if abits elseif abits elseif abits elseif abits elseif abits pixldst0 abits else pixldst0 abits pixldst0 abits pixldst0 abits pixldst0 abits endif elseif abits else pixldst0 abits pixldst0 abits endif elseif abits else error unsupported bpp
GLuint GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat t1
GLint GLint GLsizei width
#define SDL_GetSurfaceBlendMode
static void transformSurfaceY(SDL_Surface *src, SDL_Surface *dst, int cx, int cy, int isin, int icos, int flipx, int flipy)
static void transformSurfaceY90(SDL_Surface *src, SDL_Surface *dst, int angle, int flipx, int flipy)
GLint GLint GLint GLint GLint GLint y
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
#define TRANSFORM_SURFACE_90(pixelType)
GLint GLint GLsizei GLsizei height
#define SDL_CreateRGBSurface
#define SDL_SetSurfaceBlendMode
static Uint32 _colorkey(SDL_Surface *src)
SDL_Surface * SDLgfx_rotateSurface(SDL_Surface *src, double angle, int centerx, int centery, int smooth, int flipx, int flipy, int dstwidth, int dstheight, double cangle, double sangle)
void SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, int *dstwidth, int *dstheight, double *cangle, double *sangle)
static void _transformSurfaceRGBA(SDL_Surface *src, SDL_Surface *dst, int cx, int cy, int isin, int icos, int flipx, int flipy, int smooth)