diff options
Diffstat (limited to 'source/blender/imbuf/intern/divers.c')
| -rw-r--r-- | source/blender/imbuf/intern/divers.c | 81 |
1 files changed, 54 insertions, 27 deletions
diff --git a/source/blender/imbuf/intern/divers.c b/source/blender/imbuf/intern/divers.c index f049c404e2d..f0d8b7cac72 100644 --- a/source/blender/imbuf/intern/divers.c +++ b/source/blender/imbuf/intern/divers.c @@ -39,6 +39,7 @@ #include "IMB_imbuf_types.h" #include "IMB_imbuf.h" #include "IMB_allocimbuf.h" +#include "IMB_filter.h" #include "IMB_colormanagement.h" #include "IMB_colormanagement_intern.h" @@ -249,11 +250,25 @@ void IMB_buffer_byte_from_float(uchar *rect_to, const float *rect_from, uchar *to = rect_to + stride_to * y * 4; if (profile_to == profile_from) { + float straight[4]; + /* no color space conversion */ - if (dither) { + if (dither && predivide) { + for (x = 0; x < width; x++, from += 4, to += 4) { + premul_to_straight_v4(straight, from); + float_to_byte_dither_v4(to, straight, di); + } + } + else if (dither) { for (x = 0; x < width; x++, from += 4, to += 4) float_to_byte_dither_v4(to, from, di); } + else if (predivide) { + for (x = 0; x < width; x++, from += 4, to += 4) { + premul_to_straight_v4(straight, from); + rgba_float_to_uchar(to, straight); + } + } else { for (x = 0; x < width; x++, from += 4, to += 4) rgba_float_to_uchar(to, from); @@ -262,10 +277,12 @@ void IMB_buffer_byte_from_float(uchar *rect_to, const float *rect_from, else if (profile_to == IB_PROFILE_SRGB) { /* convert from linear to sRGB */ unsigned short us[4]; + float straight[4]; if (dither && predivide) { for (x = 0; x < width; x++, from += 4, to += 4) { - linearrgb_to_srgb_ushort4_predivide(us, from); + premul_to_straight_v4(straight, from); + linearrgb_to_srgb_ushort4(us, from); ushort_to_byte_dither_v4(to, us, di); } } @@ -277,7 +294,8 @@ void IMB_buffer_byte_from_float(uchar *rect_to, const float *rect_from, } else if (predivide) { for (x = 0; x < width; x++, from += 4, to += 4) { - linearrgb_to_srgb_ushort4_predivide(us, from); + premul_to_straight_v4(straight, from); + linearrgb_to_srgb_ushort4(us, from); ushort_to_byte_v4(to, us); } } @@ -526,7 +544,6 @@ void IMB_buffer_byte_from_byte(uchar *rect_to, const uchar *rect_from, void IMB_rect_from_float(ImBuf *ibuf) { - int predivide = (ibuf->flags & IB_cm_predivide); float *buffer; const char *from_colorspace; @@ -548,7 +565,10 @@ void IMB_rect_from_float(ImBuf *ibuf) buffer = MEM_dupallocN(ibuf->rect_float); /* first make float buffer in byte space */ - IMB_colormanagement_transform(buffer, ibuf->x, ibuf->y, ibuf->channels, from_colorspace, ibuf->rect_colorspace->name, predivide); + IMB_colormanagement_transform(buffer, ibuf->x, ibuf->y, ibuf->channels, from_colorspace, ibuf->rect_colorspace->name, TRUE); + + /* convert from float's premul alpha to byte's straight alpha */ + IMB_unpremultiply_rect_float(buffer, ibuf->planes, ibuf->x, ibuf->y); /* convert float to byte */ IMB_buffer_byte_from_float((unsigned char *) ibuf->rect, buffer, ibuf->channels, ibuf->dither, IB_PROFILE_SRGB, IB_PROFILE_SRGB, @@ -565,7 +585,6 @@ void IMB_partial_rect_from_float(ImBuf *ibuf, float *buffer, int x, int y, int w { float *rect_float; uchar *rect_byte; - int predivide = (ibuf->flags & IB_cm_predivide); int profile_from = IB_PROFILE_LINEAR_RGB; /* verify we have a float buffer */ @@ -588,12 +607,12 @@ void IMB_partial_rect_from_float(ImBuf *ibuf, float *buffer, int x, int y, int w /* and do color space conversion to byte */ IMB_buffer_byte_from_float(rect_byte, rect_float, - 4, ibuf->dither, IB_PROFILE_SRGB, profile_from, predivide, + 4, ibuf->dither, IB_PROFILE_SRGB, profile_from, TRUE, w, h, ibuf->x, w); } else { IMB_buffer_float_from_float(buffer, rect_float, - ibuf->channels, IB_PROFILE_SRGB, profile_from, predivide, + ibuf->channels, IB_PROFILE_SRGB, profile_from, TRUE, w, h, w, ibuf->x); /* XXX: need to convert to image buffer's rect space */ @@ -608,8 +627,6 @@ void IMB_partial_rect_from_float(ImBuf *ibuf, float *buffer, int x, int y, int w void IMB_float_from_rect(ImBuf *ibuf) { - int predivide = (ibuf->flags & IB_cm_predivide); - /* verify if we byte and float buffers */ if (ibuf->rect == NULL) return; @@ -634,22 +651,12 @@ void IMB_float_from_rect(ImBuf *ibuf) /* then make float be in linear space */ IMB_colormanagement_colorspace_to_scene_linear(ibuf->rect_float, ibuf->x, ibuf->y, ibuf->channels, - ibuf->rect_colorspace, predivide); - - BLI_unlock_thread(LOCK_COLORMANAGE); -} - -/* no profile conversion */ -void IMB_float_from_rect_simple(ImBuf *ibuf) -{ - int predivide = (ibuf->flags & IB_cm_predivide); + ibuf->rect_colorspace, FALSE); - if (ibuf->rect_float == NULL) - imb_addrectfloatImBuf(ibuf); + /* byte buffer is straight alpha, float should always be premul */ + IMB_premultiply_rect_float(ibuf->rect_float, ibuf->planes, ibuf->x, ibuf->y); - IMB_buffer_float_from_byte(ibuf->rect_float, (uchar *)ibuf->rect, - IB_PROFILE_SRGB, IB_PROFILE_SRGB, predivide, - ibuf->x, ibuf->y, ibuf->x, ibuf->x); + BLI_unlock_thread(LOCK_COLORMANAGE); } /* use when you need to get a buffer with a certain profile @@ -660,7 +667,6 @@ void IMB_float_from_rect_simple(ImBuf *ibuf) */ float *IMB_float_profile_ensure(ImBuf *ibuf, int profile, int *alloc) { - int predivide = (ibuf->flags & IB_cm_predivide); int profile_from = IB_PROFILE_LINEAR_RGB; int profile_to; @@ -686,12 +692,13 @@ float *IMB_float_profile_ensure(ImBuf *ibuf, int profile, int *alloc) if (ibuf->rect_float == NULL) { IMB_buffer_float_from_byte(fbuf, (uchar *)ibuf->rect, - profile_to, profile_from, predivide, + profile_to, profile_from, FALSE, ibuf->x, ibuf->y, ibuf->x, ibuf->x); + IMB_premultiply_rect_float(ibuf->rect_float, ibuf->planes, ibuf->x, ibuf->y); } else { IMB_buffer_float_from_float(fbuf, ibuf->rect_float, - 4, profile_to, profile_from, predivide, + 4, profile_to, profile_from, TRUE, ibuf->x, ibuf->y, ibuf->x, ibuf->x); } @@ -727,6 +734,26 @@ void IMB_buffer_float_clamp(float *buf, int width, int height) } } +void IMB_buffer_float_unpremultiply(float *buf, int width, int height) +{ + int total = width * height; + float *cp = buf; + while (total--) { + premul_to_straight_v4(cp, cp); + cp += 4; + } +} + +void IMB_buffer_float_premultiply(float *buf, int width, int height) +{ + int total = width * height; + float *cp = buf; + while (total--) { + straight_to_premul_v4(cp, cp); + cp += 4; + } +} + /**************************** alter saturation *****************************/ void IMB_saturation(ImBuf *ibuf, float sat) |