diff options
Diffstat (limited to 'source/blender/editors/sculpt_paint/paint_image_2d.c')
| -rw-r--r-- | source/blender/editors/sculpt_paint/paint_image_2d.c | 824 |
1 files changed, 824 insertions, 0 deletions
diff --git a/source/blender/editors/sculpt_paint/paint_image_2d.c b/source/blender/editors/sculpt_paint/paint_image_2d.c new file mode 100644 index 00000000000..90a2c8037c4 --- /dev/null +++ b/source/blender/editors/sculpt_paint/paint_image_2d.c @@ -0,0 +1,824 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/editors/sculpt_paint/paint_image_2d.c + * \ingroup bke + */ +//#include <math.h> +#include <string.h> + +#include "MEM_guardedalloc.h" + +#include "DNA_brush_types.h" +#include "DNA_scene_types.h" +#include "DNA_space_types.h" +#include "DNA_object_types.h" + +#include "BLI_math.h" + +#include "BKE_context.h" +#include "BKE_brush.h" +#include "BKE_main.h" +#include "BKE_image.h" +#include "BKE_paint.h" +#include "BKE_report.h" + +#include "ED_screen.h" + +#include "IMB_imbuf.h" +#include "IMB_imbuf_types.h" +#include "IMB_colormanagement.h" + +#include "WM_api.h" +#include "WM_types.h" + +#include "UI_view2d.h" + +#include "RE_shader_ext.h" + +#include "GPU_draw.h" + +#include "paint_intern.h" + +/* Brush Painting for 2D image editor */ + +/* Defines and Structs */ +/* FTOCHAR as inline function */ +BLI_INLINE unsigned char f_to_char(const float val) +{ + return FTOCHAR(val); +} +#define IMAPAINT_FLOAT_RGB_TO_CHAR(c, f) { \ + (c)[0] = f_to_char((f)[0]); \ + (c)[1] = f_to_char((f)[1]); \ + (c)[2] = f_to_char((f)[2]); \ +} (void)0 + +#define IMAPAINT_CHAR_RGB_TO_FLOAT(f, c) { \ + (f)[0] = IMAPAINT_CHAR_TO_FLOAT((c)[0]); \ + (f)[1] = IMAPAINT_CHAR_TO_FLOAT((c)[1]); \ + (f)[2] = IMAPAINT_CHAR_TO_FLOAT((c)[2]); \ +} (void)0 + +#define IMAPAINT_FLOAT_RGB_COPY(a, b) copy_v3_v3(a, b) + +typedef struct BrushPainterCache { + short enabled; + + int size; /* size override, if 0 uses 2*BKE_brush_size_get(brush) */ + short flt; /* need float imbuf? */ + short texonly; /* no alpha, color or fallof, only texture in imbuf */ + + int lastsize; + float lastalpha; + float lastjitter; + float last_rotation; + + ImBuf *ibuf; + ImBuf *texibuf; + ImBuf *maskibuf; +} BrushPainterCache; + +typedef struct BrushPainter { + Scene *scene; + Brush *brush; + + float lastpaintpos[2]; /* position of last paint op */ + float startpaintpos[2]; /* position of first paint */ + + short firsttouch; /* first paint op */ + + BrushPainterCache cache; +} BrushPainter; + +typedef struct ImagePaintRegion { + int destx, desty; + int srcx, srcy; + int width, height; +} ImagePaintRegion; + +typedef struct ImagePaintState { + BrushPainter *painter; + SpaceImage *sima; + View2D *v2d; + Scene *scene; + bScreen *screen; + + Brush *brush; + short tool, blend; + Image *image; + ImBuf *canvas; + ImBuf *clonecanvas; + char *warnpackedfile; + char *warnmultifile; + + /* viewport texture paint only, but _not_ project paint */ + Object *ob; + int faceindex; + float uv[2]; + int do_facesel; +} ImagePaintState; + + +static BrushPainter *brush_painter_2d_new(Scene *scene, Brush *brush) +{ + BrushPainter *painter = MEM_callocN(sizeof(BrushPainter), "BrushPainter"); + + painter->brush = brush; + painter->scene = scene; + painter->firsttouch = 1; + painter->cache.lastsize = -1; /* force ibuf create in refresh */ + + return painter; +} + + +static void brush_painter_2d_require_imbuf(BrushPainter *painter, short flt, short texonly, int size) +{ + if ((painter->cache.flt != flt) || (painter->cache.size != size) || + ((painter->cache.texonly != texonly) && texonly)) + { + if (painter->cache.ibuf) IMB_freeImBuf(painter->cache.ibuf); + if (painter->cache.maskibuf) IMB_freeImBuf(painter->cache.maskibuf); + painter->cache.ibuf = painter->cache.maskibuf = NULL; + painter->cache.lastsize = -1; /* force ibuf create in refresh */ + } + + if (painter->cache.flt != flt) { + if (painter->cache.texibuf) IMB_freeImBuf(painter->cache.texibuf); + painter->cache.texibuf = NULL; + painter->cache.lastsize = -1; /* force ibuf create in refresh */ + } + + painter->cache.size = size; + painter->cache.flt = flt; + painter->cache.texonly = texonly; + painter->cache.enabled = 1; +} + +static void brush_painter_2d_free(BrushPainter *painter) +{ + if (painter->cache.ibuf) IMB_freeImBuf(painter->cache.ibuf); + if (painter->cache.texibuf) IMB_freeImBuf(painter->cache.texibuf); + if (painter->cache.maskibuf) IMB_freeImBuf(painter->cache.maskibuf); + MEM_freeN(painter); +} + +static void brush_painter_2d_do_partial(BrushPainter *painter, ImBuf *oldtexibuf, + int x, int y, int w, int h, int xt, int yt, + const float pos[2]) +{ + Scene *scene = painter->scene; + Brush *brush = painter->brush; + ImBuf *ibuf, *maskibuf, *texibuf; + float *bf, *mf, *tf, *otf = NULL, xoff, yoff, xy[2], rgba[4]; + unsigned char *b, *m, *t, *ot = NULL; + int dotexold, origx = x, origy = y; + const int radius = BKE_brush_size_get(painter->scene, brush); + + xoff = -radius + 0.5f; + yoff = -radius + 0.5f; + xoff += (int)pos[0] - (int)painter->startpaintpos[0]; + yoff += (int)pos[1] - (int)painter->startpaintpos[1]; + + ibuf = painter->cache.ibuf; + texibuf = painter->cache.texibuf; + maskibuf = painter->cache.maskibuf; + + dotexold = (oldtexibuf != NULL); + + /* not sure if it's actually needed or it's a mistake in coords/sizes + * calculation in brush_painter_fixed_tex_partial_update(), but without this + * limitation memory gets corrupted at fast strokes with quite big spacing (sergey) */ + w = min_ii(w, ibuf->x); + h = min_ii(h, ibuf->y); + + if (painter->cache.flt) { + for (; y < h; y++) { + bf = ibuf->rect_float + (y * ibuf->x + origx) * 4; + tf = texibuf->rect_float + (y * texibuf->x + origx) * 4; + mf = maskibuf->rect_float + (y * maskibuf->x + origx) * 4; + + if (dotexold) + otf = oldtexibuf->rect_float + ((y - origy + yt) * oldtexibuf->x + xt) * 4; + + for (x = origx; x < w; x++, bf += 4, mf += 4, tf += 4) { + if (dotexold) { + copy_v4_v4(tf, otf); + otf += 4; + } + else { + xy[0] = x + xoff; + xy[1] = y + yoff; + + BKE_brush_sample_tex_2D(scene, brush, xy, tf); + } + + bf[0] = tf[0] * mf[0]; + bf[1] = tf[1] * mf[1]; + bf[2] = tf[2] * mf[2]; + bf[3] = tf[3] * mf[3]; + } + } + } + else { + for (; y < h; y++) { + b = (unsigned char *)ibuf->rect + (y * ibuf->x + origx) * 4; + t = (unsigned char *)texibuf->rect + (y * texibuf->x + origx) * 4; + m = (unsigned char *)maskibuf->rect + (y * maskibuf->x + origx) * 4; + + if (dotexold) + ot = (unsigned char *)oldtexibuf->rect + ((y - origy + yt) * oldtexibuf->x + xt) * 4; + + for (x = origx; x < w; x++, b += 4, m += 4, t += 4) { + if (dotexold) { + t[0] = ot[0]; + t[1] = ot[1]; + t[2] = ot[2]; + t[3] = ot[3]; + ot += 4; + } + else { + xy[0] = x + xoff; + xy[1] = y + yoff; + + BKE_brush_sample_tex_2D(scene, brush, xy, rgba); + rgba_float_to_uchar(t, rgba); + } + + b[0] = t[0] * m[0] / 255; + b[1] = t[1] * m[1] / 255; + b[2] = t[2] * m[2] / 255; + b[3] = t[3] * m[3] / 255; + } + } + } +} + +static void brush_painter_2d_tiled_tex_partial_update(BrushPainter *painter, const float pos[2]) +{ + const Scene *scene = painter->scene; + Brush *brush = painter->brush; + BrushPainterCache *cache = &painter->cache; + ImBuf *oldtexibuf, *ibuf; + int imbflag, destx, desty, srcx, srcy, w, h, x1, y1, x2, y2; + const int diameter = 2 * BKE_brush_size_get(scene, brush); + + imbflag = (cache->flt) ? IB_rectfloat : IB_rect; + if (!cache->ibuf) + cache->ibuf = IMB_allocImBuf(diameter, diameter, 32, imbflag); + ibuf = cache->ibuf; + + oldtexibuf = cache->texibuf; + cache->texibuf = IMB_allocImBuf(diameter, diameter, 32, imbflag); + if (oldtexibuf) { + srcx = srcy = 0; + destx = (int)painter->lastpaintpos[0] - (int)pos[0]; + desty = (int)painter->lastpaintpos[1] - (int)pos[1]; + w = oldtexibuf->x; + h = oldtexibuf->y; + + IMB_rectclip(cache->texibuf, oldtexibuf, &destx, &desty, &srcx, &srcy, &w, &h); + } + else { + srcx = srcy = 0; + destx = desty = 0; + w = h = 0; + } + + x1 = destx; + y1 = desty; + x2 = destx + w; + y2 = desty + h; + + /* blend existing texture in new position */ + if ((x1 < x2) && (y1 < y2)) + brush_painter_2d_do_partial(painter, oldtexibuf, x1, y1, x2, y2, srcx, srcy, pos); + + if (oldtexibuf) + IMB_freeImBuf(oldtexibuf); + + /* sample texture in new areas */ + if ((0 < x1) && (0 < ibuf->y)) + brush_painter_2d_do_partial(painter, NULL, 0, 0, x1, ibuf->y, 0, 0, pos); + if ((x2 < ibuf->x) && (0 < ibuf->y)) + brush_painter_2d_do_partial(painter, NULL, x2, 0, ibuf->x, ibuf->y, 0, 0, pos); + if ((x1 < x2) && (0 < y1)) + brush_painter_2d_do_partial(painter, NULL, x1, 0, x2, y1, 0, 0, pos); + if ((x1 < x2) && (y2 < ibuf->y)) + brush_painter_2d_do_partial(painter, NULL, x1, y2, x2, ibuf->y, 0, 0, pos); +} + +static void brush_painter_2d_refresh_cache(BrushPainter *painter, const float pos[2], int use_color_correction) +{ + const Scene *scene = painter->scene; + UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings; + Brush *brush = painter->brush; + BrushPainterCache *cache = &painter->cache; + MTex *mtex = &brush->mtex; + int size; + short flt; + const int diameter = 2 * BKE_brush_size_get(scene, brush); + const float alpha = BKE_brush_alpha_get(scene, brush); + const bool do_tiled = ELEM(brush->mtex.brush_map_mode, MTEX_MAP_MODE_TILED, MTEX_MAP_MODE_3D); + float rotation = -mtex->rot; + + if (mtex->brush_map_mode == MTEX_MAP_MODE_VIEW) { + rotation += ups->brush_rotation; + } + + if (diameter != cache->lastsize || + alpha != cache->lastalpha || + brush->jitter != cache->lastjitter || + rotation != cache->last_rotation) + { + if (cache->ibuf) { + IMB_freeImBuf(cache->ibuf); + cache->ibuf = NULL; + } + if (cache->maskibuf) { + IMB_freeImBuf(cache->maskibuf); + cache->maskibuf = NULL; + } + + flt = cache->flt; + size = (cache->size) ? cache->size : diameter; + + if (do_tiled) { + BKE_brush_imbuf_new(scene, brush, flt, 3, size, &cache->maskibuf, use_color_correction); + brush_painter_2d_tiled_tex_partial_update(painter, pos); + } + else + BKE_brush_imbuf_new(scene, brush, flt, 2, size, &cache->ibuf, use_color_correction); + + cache->lastsize = diameter; + cache->lastalpha = alpha; + cache->lastjitter = brush->jitter; + cache->last_rotation = rotation; + } + else if (do_tiled && mtex && mtex->tex) { + int dx = (int)painter->lastpaintpos[0] - (int)pos[0]; + int dy = (int)painter->lastpaintpos[1] - (int)pos[1]; + + if ((dx != 0) || (dy != 0)) + brush_painter_2d_tiled_tex_partial_update(painter, pos); + } +} + +/* keep these functions in sync */ +static void paint_2d_ibuf_rgb_get(ImBuf *ibuf, int x, int y, const short is_torus, float r_rgb[3]) +{ + if (is_torus) { + x %= ibuf->x; + if (x < 0) x += ibuf->x; + y %= ibuf->y; + if (y < 0) y += ibuf->y; + } + + if (ibuf->rect_float) { + float *rrgbf = ibuf->rect_float + (ibuf->x * y + x) * 4; + IMAPAINT_FLOAT_RGB_COPY(r_rgb, rrgbf); + } + else { + char *rrgb = (char *)ibuf->rect + (ibuf->x * y + x) * 4; + IMAPAINT_CHAR_RGB_TO_FLOAT(r_rgb, rrgb); + } +} +static void paint_2d_ibuf_rgb_set(ImBuf *ibuf, int x, int y, const short is_torus, const float rgb[3]) +{ + if (is_torus) { + x %= ibuf->x; + if (x < 0) x += ibuf->x; + y %= ibuf->y; + if (y < 0) y += ibuf->y; + } + + if (ibuf->rect_float) { + float *rrgbf = ibuf->rect_float + (ibuf->x * y + x) * 4; + IMAPAINT_FLOAT_RGB_COPY(rrgbf, rgb); + } + else { + char *rrgb = (char *)ibuf->rect + (ibuf->x * y + x) * 4; + IMAPAINT_FLOAT_RGB_TO_CHAR(rrgb, rgb); + } +} + +static int paint_2d_ibuf_add_if(ImBuf *ibuf, unsigned int x, unsigned int y, float *outrgb, short torus) +{ + float inrgb[3]; + + // XXX: signed unsigned mismatch + if ((x >= (unsigned int)(ibuf->x)) || (y >= (unsigned int)(ibuf->y))) { + if (torus) paint_2d_ibuf_rgb_get(ibuf, x, y, 1, inrgb); + else return 0; + } + else { + paint_2d_ibuf_rgb_get(ibuf, x, y, 0, inrgb); + } + + outrgb[0] += inrgb[0]; + outrgb[1] += inrgb[1]; + outrgb[2] += inrgb[2]; + + return 1; +} + +static void paint_2d_lift_soften(ImBuf *ibuf, ImBuf *ibufb, int *pos, const short is_torus) +{ + int x, y, count, xi, yi, xo, yo; + int out_off[2], in_off[2], dim[2]; + float outrgb[3]; + + dim[0] = ibufb->x; + dim[1] = ibufb->y; + in_off[0] = pos[0]; + in_off[1] = pos[1]; + out_off[0] = out_off[1] = 0; + + if (!is_torus) { + IMB_rectclip(ibuf, ibufb, &in_off[0], &in_off[1], &out_off[0], + &out_off[1], &dim[0], &dim[1]); + + if ((dim[0] == 0) || (dim[1] == 0)) + return; + } + + for (y = 0; y < dim[1]; y++) { + for (x = 0; x < dim[0]; x++) { + /* get input pixel */ + xi = in_off[0] + x; + yi = in_off[1] + y; + + count = 1; + paint_2d_ibuf_rgb_get(ibuf, xi, yi, is_torus, outrgb); + + count += paint_2d_ibuf_add_if(ibuf, xi - 1, yi - 1, outrgb, is_torus); + count += paint_2d_ibuf_add_if(ibuf, xi - 1, yi, outrgb, is_torus); + count += paint_2d_ibuf_add_if(ibuf, xi - 1, yi + 1, outrgb, is_torus); + + count += paint_2d_ibuf_add_if(ibuf, xi, yi - 1, outrgb, is_torus); + count += paint_2d_ibuf_add_if(ibuf, xi, yi + 1, outrgb, is_torus); + + count += paint_2d_ibuf_add_if(ibuf, xi + 1, yi - 1, outrgb, is_torus); + count += paint_2d_ibuf_add_if(ibuf, xi + 1, yi, outrgb, is_torus); + count += paint_2d_ibuf_add_if(ibuf, xi + 1, yi + 1, outrgb, is_torus); + + mul_v3_fl(outrgb, 1.0f / (float)count); + + /* write into brush buffer */ + xo = out_off[0] + x; + yo = out_off[1] + y; + paint_2d_ibuf_rgb_set(ibufb, xo, yo, 0, outrgb); + } + } +} + +static void paint_2d_set_region(ImagePaintRegion *region, int destx, int desty, int srcx, int srcy, int width, int height) +{ + region->destx = destx; + region->desty = desty; + region->srcx = srcx; + region->srcy = srcy; + region->width = width; + region->height = height; +} + +static int paint_2d_torus_split_region(ImagePaintRegion region[4], ImBuf *dbuf, ImBuf *sbuf) +{ + int destx = region->destx; + int desty = region->desty; + int srcx = region->srcx; + int srcy = region->srcy; + int width = region->width; + int height = region->height; + int origw, origh, w, h, tot = 0; + + /* convert destination and source coordinates to be within image */ + destx = destx % dbuf->x; + if (destx < 0) destx += dbuf->x; + desty = desty % dbuf->y; + if (desty < 0) desty += dbuf->y; + srcx = srcx % sbuf->x; + if (srcx < 0) srcx += sbuf->x; + srcy = srcy % sbuf->y; + if (srcy < 0) srcy += sbuf->y; + + /* clip width of blending area to destination imbuf, to avoid writing the + * same pixel twice */ + origw = w = (width > dbuf->x) ? dbuf->x : width; + origh = h = (height > dbuf->y) ? dbuf->y : height; + + /* clip within image */ + IMB_rectclip(dbuf, sbuf, &destx, &desty, &srcx, &srcy, &w, &h); + paint_2d_set_region(®ion[tot++], destx, desty, srcx, srcy, w, h); + + /* do 3 other rects if needed */ + if (w < origw) + paint_2d_set_region(®ion[tot++], (destx + w) % dbuf->x, desty, (srcx + w) % sbuf->x, srcy, origw - w, h); + if (h < origh) + paint_2d_set_region(®ion[tot++], destx, (desty + h) % dbuf->y, srcx, (srcy + h) % sbuf->y, w, origh - h); + if ((w < origw) && (h < origh)) + paint_2d_set_region(®ion[tot++], (destx + w) % dbuf->x, (desty + h) % dbuf->y, (srcx + w) % sbuf->x, (srcy + h) % sbuf->y, origw - w, origh - h); + + return tot; +} + +static void paint_2d_lift_smear(ImBuf *ibuf, ImBuf *ibufb, int *pos) +{ + ImagePaintRegion region[4]; + int a, tot; + + paint_2d_set_region(region, 0, 0, pos[0], pos[1], ibufb->x, ibufb->y); + tot = paint_2d_torus_split_region(region, ibufb, ibuf); + + for (a = 0; a < tot; a++) + IMB_rectblend(ibufb, ibuf, region[a].destx, region[a].desty, + region[a].srcx, region[a].srcy, + region[a].width, region[a].height, IMB_BLEND_COPY_RGB); +} + +static ImBuf *paint_2d_lift_clone(ImBuf *ibuf, ImBuf *ibufb, int *pos) +{ + /* note: allocImbuf returns zero'd memory, so regions outside image will + * have zero alpha, and hence not be blended onto the image */ + int w = ibufb->x, h = ibufb->y, destx = 0, desty = 0, srcx = pos[0], srcy = pos[1]; + ImBuf *clonebuf = IMB_allocImBuf(w, h, ibufb->planes, ibufb->flags); + + IMB_rectclip(clonebuf, ibuf, &destx, &desty, &srcx, &srcy, &w, &h); + IMB_rectblend(clonebuf, ibuf, destx, desty, srcx, srcy, w, h, + IMB_BLEND_COPY_RGB); + IMB_rectblend(clonebuf, ibufb, destx, desty, destx, desty, w, h, + IMB_BLEND_COPY_ALPHA); + + return clonebuf; +} + +static void paint_2d_convert_brushco(ImBuf *ibufb, const float pos[2], int ipos[2]) +{ + ipos[0] = (int)floorf((pos[0] - ibufb->x / 2) + 1.0f); + ipos[1] = (int)floorf((pos[1] - ibufb->y / 2) + 1.0f); +} + +static int paint_2d_op(void *state, ImBuf *ibufb, const float lastpos[2], const float pos[2]) +{ + ImagePaintState *s = ((ImagePaintState *)state); + ImBuf *clonebuf = NULL, *frombuf; + ImagePaintRegion region[4]; + short torus = s->brush->flag & BRUSH_TORUS; + short blend = s->blend; + float *offset = s->brush->clone.offset; + float liftpos[2]; + int bpos[2], blastpos[2], bliftpos[2]; + int a, tot; + + paint_2d_convert_brushco(ibufb, pos, bpos); + + /* lift from canvas */ + if (s->tool == PAINT_TOOL_SOFTEN) { + paint_2d_lift_soften(s->canvas, ibufb, bpos, torus); + } + else if (s->tool == PAINT_TOOL_SMEAR) { + if (lastpos[0] == pos[0] && lastpos[1] == pos[1]) + return 0; + + paint_2d_convert_brushco(ibufb, lastpos, blastpos); + paint_2d_lift_smear(s->canvas, ibufb, blastpos); + } + else if (s->tool == PAINT_TOOL_CLONE && s->clonecanvas) { + liftpos[0] = pos[0] - offset[0] * s->canvas->x; + liftpos[1] = pos[1] - offset[1] * s->canvas->y; + + paint_2d_convert_brushco(ibufb, liftpos, bliftpos); + clonebuf = paint_2d_lift_clone(s->clonecanvas, ibufb, bliftpos); + } + + frombuf = (clonebuf) ? clonebuf : ibufb; + + if (torus) { + paint_2d_set_region(region, bpos[0], bpos[1], 0, 0, frombuf->x, frombuf->y); + tot = paint_2d_torus_split_region(region, s->canvas, frombuf); + } + else { + paint_2d_set_region(region, bpos[0], bpos[1], 0, 0, frombuf->x, frombuf->y); + tot = 1; + } + + /* blend into canvas */ + for (a = 0; a < tot; a++) { + imapaint_dirty_region(s->image, s->canvas, + region[a].destx, region[a].desty, + region[a].width, region[a].height); + + IMB_rectblend(s->canvas, frombuf, + region[a].destx, region[a].desty, + region[a].srcx, region[a].srcy, + region[a].width, region[a].height, blend); + } + + if (clonebuf) IMB_freeImBuf(clonebuf); + + return 1; +} + + +static int paint_2d_canvas_set(ImagePaintState *s, Image *ima) +{ + ImBuf *ibuf = BKE_image_acquire_ibuf(ima, s->sima ? &s->sima->iuser : NULL, NULL); + + /* verify that we can paint and set canvas */ + if (ima == NULL) { + return 0; + } + else if (ima->packedfile && ima->rr) { + s->warnpackedfile = ima->id.name + 2; + return 0; + } + else if (ibuf && ibuf->channels != 4) { + s->warnmultifile = ima->id.name + 2; + return 0; + } + else if (!ibuf || !(ibuf->rect || ibuf->rect_float)) + return 0; + + s->image = ima; + s->canvas = ibuf; + + /* set clone canvas */ + if (s->tool == PAINT_TOOL_CLONE) { + ima = s->brush->clone.image; + ibuf = BKE_image_acquire_ibuf(ima, s->sima ? &s->sima->iuser : NULL, NULL); + + if (!ima || !ibuf || !(ibuf->rect || ibuf->rect_float)) { + BKE_image_release_ibuf(ima, ibuf, NULL); + BKE_image_release_ibuf(s->image, s->canvas, NULL); + return 0; + } + + s->clonecanvas = ibuf; + + /* temporarily add float rect for cloning */ + if (s->canvas->rect_float && !s->clonecanvas->rect_float) { + IMB_float_from_rect(s->clonecanvas); + } + else if (!s->canvas->rect_float && !s->clonecanvas->rect) + IMB_rect_from_float(s->clonecanvas); + } + + return 1; +} + +static void paint_2d_canvas_free(ImagePaintState *s) +{ + BKE_image_release_ibuf(s->image, s->canvas, NULL); + BKE_image_release_ibuf(s->brush->clone.image, s->clonecanvas, NULL); +} + +int paint_2d_stroke(void *ps, const int prev_mval[2], const int mval[2], int eraser) +{ + float newuv[2], olduv[2]; + int redraw = 0; + ImagePaintState *s = ps; + BrushPainter *painter = s->painter; + ImBuf *ibuf = BKE_image_acquire_ibuf(s->image, s->sima ? &s->sima->iuser : NULL, NULL); + const bool is_data = (ibuf && ibuf->colormanage_flag & IMB_COLORMANAGE_IS_DATA); + + if (!ibuf) + return 0; + + s->blend = s->brush->blend; + if (eraser) + s->blend = IMB_BLEND_ERASE_ALPHA; + + UI_view2d_region_to_view(s->v2d, mval[0], mval[1], &newuv[0], &newuv[1]); + UI_view2d_region_to_view(s->v2d, prev_mval[0], prev_mval[1], &olduv[0], &olduv[1]); + + newuv[0] *= ibuf->x; + newuv[1] *= ibuf->y; + + olduv[0] *= ibuf->x; + olduv[1] *= ibuf->y; + + if (painter->firsttouch) { + /* paint exactly once on first touch */ + painter->startpaintpos[0] = newuv[0]; + painter->startpaintpos[1] = newuv[1]; + + painter->firsttouch = 0; + copy_v2_v2(painter->lastpaintpos, newuv); + } + else { + copy_v2_v2(painter->lastpaintpos, olduv); + } + /* OCIO_TODO: float buffers are now always linear, so always use color correction + * this should probably be changed when texture painting color space is supported + */ + brush_painter_2d_require_imbuf(painter, ((ibuf->rect_float) ? 1 : 0), 0, 0); + + if (painter->cache.enabled) + brush_painter_2d_refresh_cache(painter, newuv, is_data == false); + + if (paint_2d_op(s, painter->cache.ibuf, olduv, newuv)) { + imapaint_image_update(s->sima, s->image, ibuf, false); + BKE_image_release_ibuf(s->image, ibuf, NULL); + redraw |= 1; + } + else { + BKE_image_release_ibuf(s->image, ibuf, NULL); + } + + if (redraw) + imapaint_clear_partial_redraw(); + + return redraw; +} + +void *paint_2d_new_stroke(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + ToolSettings *settings = scene->toolsettings; + Brush *brush = paint_brush(&settings->imapaint.paint); + + ImagePaintState *s = MEM_callocN(sizeof(ImagePaintState), "ImagePaintState"); + + s->sima = CTX_wm_space_image(C); + s->v2d = &CTX_wm_region(C)->v2d; + s->scene = scene; + s->screen = CTX_wm_screen(C); + + s->brush = brush; + s->tool = brush->imagepaint_tool; + s->blend = brush->blend; + + s->image = s->sima->image; + + if (!paint_2d_canvas_set(s, s->image)) { + if (s->warnmultifile) + BKE_report(op->reports, RPT_WARNING, "Image requires 4 color channels to paint"); + if (s->warnpackedfile) + BKE_report(op->reports, RPT_WARNING, "Packed MultiLayer files cannot be painted"); + + MEM_freeN(s); + return NULL; + } + + paint_brush_init_tex(s->brush); + + /* create painter */ + s->painter = brush_painter_2d_new(scene, s->brush); + + return s; +} + +void paint_2d_redraw (const bContext *C, void *ps, int final) +{ + ImagePaintState *s = ps; + + if (final) { + if (s->image && !(s->sima && s->sima->lock)) + GPU_free_image(s->image); + + /* compositor listener deals with updating */ + WM_event_add_notifier(C, NC_IMAGE | NA_EDITED, s->image); + } + else { + if (!s->sima || !s->sima->lock) + ED_region_tag_redraw(CTX_wm_region(C)); + else + WM_event_add_notifier(C, NC_IMAGE | NA_EDITED, s->image); + } +} + +void paint_2d_stroke_done(void *ps) +{ + ImagePaintState *s = ps; + + paint_2d_canvas_free(s); + brush_painter_2d_free(s->painter); + paint_brush_exit_tex(s->brush); + + MEM_freeN(s); +} |