Cross Reference: /system/core/libpixelflinger/buffer.cpp

Lines Matching defs:sbits
37 static uint32_t expand(uint32_t v, int sbits, int dbits);
252 uint32_t ggl_expand(uint32_t v, int sbits, int dbits)
254     return expand(v, sbits, dbits);
290 // expand a component from sbits to dbits
291 uint32_t expand(uint32_t v, int sbits, int dbits)
293     if (dbits > sbits) {
294         assert(sbits);
295         if (sbits==1) {
298             if (dbits % sbits) {
299                 v <<= (dbits-sbits);
300                 dbits -= sbits;
302                     v |= v>>sbits;
303                     dbits -= sbits;
304                     sbits *= 2;
307                 dbits -= sbits;
309                     v |= v<<sbits;
310                     dbits -= sbits;
311                     if (sbits*2 < dbits) {
312                         sbits *= 2;
321 // downsample a component from sbits to dbits
329 	const int sbits = sh-sl;
332 	assert(sbits>=dbits);
335     if (sbits>dbits) {
338             const int shift = (GGL_DITHER_BITS - (sbits-dbits));
347             //    v += 1 << ((sbits-dbits)-1);	// rounding
361 		if (cl || (sbits>dbits)) {
367 			// sbits==dbits and we don't need to clean the lower bits