SW/SWtexture.h at master · sergcpp/SW · GitHub

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#ifndefSW_TEXTURE_H
#defineSW_TEXTURE_H

#include"SWcore.h"
#include"SWpixels.h"

typedefstructSWtexture {
SWenummode, type;
SWintw, h, type_size, pp_size;
void*pixels;
void (*free)(void*);
} SWtexture;

externSWfloat_sw_ubyte_to_float_table[256];

voidswTexInit(SWtexture*t, SWenummode, SWenumtype, SWintw, SWinth,
constvoid*pixels);
voidswTexInitMove(SWtexture*t, SWenummode, SWenumtype, SWintw, SWinth, void*pixels,
void (*free)(void*));
voidswTexInitMove_malloced(SWtexture*t, SWenummode, SWenumtype, SWintw, SWinth,
void*pixels);
voidswTexDestroy(SWtexture*t);

#defineswTex_RGB888_GetColorFloat_RGBA(t, u, v, rgba) \
 swPx_RGB888_GetColor_FRGBA_UV((t)->w, (t)->h, (t)->pixels, u, v, rgba)

#defineswTexGetColorFloat_RGBA(t, u, v, rgba) \
 { \
 SWint x = (SWint)(u * (t)->w) & ((t)->w - 1); \
 SWint y = (SWint)(v * (t)->h) & ((t)->h - 1); \
 \
 switch ((t)->type) { \
 case SW_UNSIGNED_BYTE: { \
 SWint i; \
 SWubyte *p = (SWubyte *)(t)->pixels; \
 if ((t)->mode == SW_RGB) { \
 p += 3 * (y * (t)->w + x); \
 rgba[3] = (SWfloat)1.0; \
 } else if ((t)->mode == SW_RGBA) { \
 p += 4 * (y * (t)->w + x); \
 rgba[3] = _sw_ubyte_to_float_table[p[3]]; \
 } \
 \
 for (i = 0; i < 3; i++) { \
 rgba[i] = _sw_ubyte_to_float_table[p[i]]; \
 } \
 } break; \
 case SW_COMPRESSED: { \
 const SWubyte *table = (const SWubyte *)(t)->pixels; \
 const SWubyte *pixels = (const SWubyte *)(t)->pixels + 256 * 4 * 4; \
 \
 SWint i = 4 * (2 * (y & 1) + (x & 1)); \
 x >>= 1; \
 y >>= 1; \
 const SWubyte index = pixels[y * ((t)->w >> 1) + x]; \
 const SWubyte *_col = &table[index * 16 + i]; \
 \
 for (i = 0; i < 4; i++) { \
 rgba[i] = _sw_ubyte_to_float_table[_col[i]]; \
 } \
 } break; \
 default: \
 break; \
 } \
 }

#defineswTexGetColorUbyte_RGBA(t, u, v, rgba) \
 swPxGetColorUbyte_RGBA(t->type, t->mode, t->w, t->h, t->pixels, u, v, rgba)
#defineswTexGetColorUbyte_BGRA(t, u, v, bgra) \
 swPxGetColorUbyte_BGRA(t->type, t->mode, t->w, t->h, t->pixels, u, v, bgra)

#endif/* SW_TEXTURE_H */