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) 82 #define VALUE_LIMIT 0.001 110 int *dstwidth,
int *dstheight,
111 double *cangle,
double *sangle)
114 int angle90 = (int)(angle/90);
115 if(angle90 == angle/90) {
117 if(angle90 < 0) angle90 += 4;
122 *sangle = angle90 == 1 ? -1 : 1;
126 *cangle = angle90 == 0 ? 1 : -1;
130 double x,
y, cx, cy, sx, sy;
132 int dstwidthhalf, dstheighthalf;
136 radangle = angle * (M_PI / -180.0);
139 x = (double)(width / 2);
140 y = (double)(height / 2);
146 dstwidthhalf =
MAX((
int)
148 dstheighthalf =
MAX((
int)
150 *dstwidth = 2 * dstwidthhalf;
151 *dstheight = 2 * dstheighthalf;
158 int *sincx,
int *sincy,
int *signx,
int *signy)
165 case 0: *sincx =
bpp; *sincy = pitch - src->
w * *sincx; *signx = *signy = 1;
break;
166 case 1: *sincx = -pitch; *sincy = bpp - *sincx * src->
h; *signx = 1; *signy = -1;
break;
167 case 2: *sincx = -
bpp; *sincy = -src->
w * *sincx - pitch; *signx = *signy = -1;
break;
168 case 3:
default: *sincx = pitch; *sincy = -*sincx * src->
h -
bpp; *signx = -1; *signy = 1;
break;
179 #define TRANSFORM_SURFACE_90(pixelType) \ 180 int dy, dincy = dst->pitch - dst->w*sizeof(pixelType), sincx, sincy, signx, signy; \ 181 Uint8 *sp = (Uint8*)src->pixels, *dp = (Uint8*)dst->pixels, *de; \ 183 computeSourceIncrements90(src, sizeof(pixelType), angle, flipx, flipy, &sincx, &sincy, &signx, &signy); \ 184 if (signx < 0) sp += (src->w-1)*sizeof(pixelType); \ 185 if (signy < 0) sp += (src->h-1)*src->pitch; \ 187 for (dy = 0; dy < dst->h; sp += sincy, dp += dincy, dy++) { \ 188 if (sincx == sizeof(pixelType)) { \ 189 SDL_memcpy(dp, sp, dst->w*sizeof(pixelType)); \ 190 sp += dst->w*sizeof(pixelType); \ 191 dp += dst->w*sizeof(pixelType); \ 193 for (de = dp + dst->w*sizeof(pixelType); dp != de; sp += sincx, dp += sizeof(pixelType)) { \ 194 *(pixelType*)dp = *(pixelType*)sp; \ 211 #undef TRANSFORM_SURFACE_90 235 int x,
y,
t1, t2, dx, dy, xd, yd, sdx, sdy, ax, ay, ex, ey, sw, sh;
243 xd = ((src->
w - dst->
w) << 15);
244 yd = ((src->
h - dst->
h) << 15);
245 ax = (cx << 16) - (icos * cx);
246 ay = (cy << 16) - (isin * cx);
250 gap = dst->
pitch - dst->
w * 4;
256 for (y = 0; y < dst->
h; y++) {
258 sdx = (ax + (isin * dy)) + xd;
259 sdy = (ay - (icos * dy)) + yd;
260 for (x = 0; x < dst->
w; x++) {
263 if (flipx) dx = sw - dx;
264 if (flipy) dy = sh - dy;
265 if ((
unsigned)dx < (unsigned)sw && (
unsigned)dy < (unsigned)sh) {
270 sp += (src->
pitch/4);
275 cswap = c00; c00=c01; c01=cswap;
276 cswap = c10; c10=c11; c11=cswap;
279 cswap = c00; c00=c10; c10=cswap;
280 cswap = c01; c01=c11; c11=cswap;
287 t1 = ((((c01.
r - c00.
r) * ex) >> 16) + c00.
r) & 0xff;
288 t2 = ((((c11.
r - c10.
r) * ex) >> 16) + c10.
r) & 0xff;
289 pc->
r = (((t2 -
t1) * ey) >> 16) + t1;
290 t1 = ((((c01.
g - c00.
g) * ex) >> 16) + c00.
g) & 0xff;
291 t2 = ((((c11.
g - c10.
g) * ex) >> 16) + c10.
g) & 0xff;
292 pc->
g = (((t2 -
t1) * ey) >> 16) + t1;
293 t1 = ((((c01.
b - c00.
b) * ex) >> 16) + c00.
b) & 0xff;
294 t2 = ((((c11.
b - c10.
b) * ex) >> 16) + c10.
b) & 0xff;
295 pc->
b = (((t2 -
t1) * ey) >> 16) + t1;
296 t1 = ((((c01.
a - c00.
a) * ex) >> 16) + c00.
a) & 0xff;
297 t2 = ((((c11.
a - c10.
a) * ex) >> 16) + c10.
a) & 0xff;
298 pc->
a = (((t2 -
t1) * ey) >> 16) + t1;
307 for (y = 0; y < dst->
h; y++) {
309 sdx = (ax + (isin * dy)) + xd;
310 sdy = (ay - (icos * dy)) + yd;
311 for (x = 0; x < dst->
w; x++) {
314 if ((
unsigned)dx < (unsigned)src->
w && (
unsigned)dy < (unsigned)src->
h) {
315 if(flipx) dx = sw - dx;
316 if(flipy) dy = sh - dy;
349 int x,
y, dx, dy, xd, yd, sdx, sdy, ax, ay;
356 xd = ((src->
w - dst->
w) << 15);
357 yd = ((src->
h - dst->
h) << 15);
358 ax = (cx << 16) - (icos * cx);
359 ay = (cy << 16) - (isin * cx);
361 gap = dst->
pitch - dst->
w;
369 for (y = 0; y < dst->
h; y++) {
371 sdx = (ax + (isin * dy)) + xd;
372 sdy = (ay - (icos * dy)) + yd;
373 for (x = 0; x < dst->
w; x++) {
376 if ((
unsigned)dx < (unsigned)src->
w && (
unsigned)dy < (unsigned)src->
h) {
377 if (flipx) dx = (src->
w-1)-dx;
378 if (flipy) dy = (src->
h-1)-dy;
414 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)
418 int is32bit, angle90;
422 int colorKeyAvailable = 0;
423 double sangleinv, cangleinv;
435 colorKeyAvailable = 1;
448 if (rz_src ==
NULL) {
460 sangleinv = sangle*65536.0;
461 cangleinv = cangle*65536.0;
486 rz_dst->
h = dstheight;
488 if (colorKeyAvailable == 1){
505 angle90 = (int)(angle/90);
506 if (angle90 == angle/90) {
508 if (angle90 < 0) angle90 += 4;
523 _transformSurfaceRGBA(rz_src, rz_dst, centerx, centery, (
int) (sangleinv), (
int) (cangleinv), flipx, flipy, smooth);
544 transformSurfaceY(rz_src, rz_dst, centerx, centery, (
int)(sangleinv), (
int)(cangleinv), flipx, flipy);
552 Uint8 alphaMod, cr, cg, cb;
#define SDL_ConvertSurfaceFormat
#define SDL_UnlockSurface
GLdouble GLdouble GLdouble r
GLint GLint GLsizei width
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)
uint32_t Uint32
An unsigned 32-bit integer type.
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
GLint GLint GLsizei GLsizei height
GLuint GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat GLfloat t1
#define SDL_GetSurfaceBlendMode
static SDL_BlendMode blendMode
GLint GLint GLint GLint GLint GLint y
#define SDL_SetSurfaceColorMod
uint8_t Uint8
An unsigned 8-bit integer type.
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)
#define SDL_GetSurfaceAlphaMod
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)
#define SDL_CreateRGBSurface
#define SDL_GetSurfaceColorMod
#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)
GLboolean GLboolean GLboolean b
void SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, int *dstwidth, int *dstheight, double *cangle, double *sangle)
#define SDL_SetSurfaceAlphaMod
static void _transformSurfaceRGBA(SDL_Surface *src, SDL_Surface *dst, int cx, int cy, int isin, int icos, int flipx, int flipy, int smooth)