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fix [#33037] Soften brush can't handle seams in texture paint

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project paint never worked with soften (blur), support now added.
This commit is contained in:
Campbell Barton
2012-11-06 09:19:51 +00:00
parent e7bea58d35
commit 5effa2923a
2 changed files with 117 additions and 9 deletions
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2
release/scripts/startup/bl_ui/space_view3d_toolbar.py
View File

@@ -1048,7 +1048,7 @@ class VIEW3D_PT_tools_projectpaint(View3DPanel, Panel):
@classmethod
def poll(cls, context):
brush = context.tool_settings.image_paint.brush
return (brush and brush.image_tool != 'SOFTEN')
return (brush is not None)
def draw_header(self, context):
ipaint = context.tool_settings.image_paint

124
source/blender/editors/sculpt_paint/paint_image.c
View File

@@ -381,6 +381,18 @@ typedef struct ProjPixelClone {
PixelStore clonepx;
} ProjPixelClone;
/* blur, store surrounding colors */
#define PROJ_PIXEL_SOFTEN_TOT 4
/* blur picking offset (in screenspace) */
#define PROJ_PIXEL_SOFTEN_OFS_PX 1.0f
static const float proj_pixel_soften_v2[PROJ_PIXEL_SOFTEN_TOT][2] = {
{-PROJ_PIXEL_SOFTEN_OFS_PX, 0.0f},
{ 0.0f, -PROJ_PIXEL_SOFTEN_OFS_PX},
{ 0.0f, PROJ_PIXEL_SOFTEN_OFS_PX},
{ PROJ_PIXEL_SOFTEN_OFS_PX, 0.0f},
};
/* Finish projection painting structs */
typedef struct UndoImageTile {
@@ -3816,6 +3828,84 @@ static void do_projectpaint_smear_f(ProjPaintState *ps, ProjPixel *projPixel, fl
BLI_linklist_prepend_arena(smearPixels_f, (void *)projPixel, smearArena);
}
/* do_projectpaint_soften for float & byte
*/
static float inv_pow2(float f)
{
f = 1.0f - f;
f = f * f;
return 1.0f - f;
}
static void do_projectpaint_soften_f(ProjPaintState *ps, ProjPixel *projPixel, float alpha, float mask, MemArena *softenArena, LinkNode **softenPixels)
{
unsigned int accum_tot = 0;
unsigned int i;
float *rgba = projPixel->newColor.f;
/* sigh, alpha values tend to need to be a _lot_ stronger with blur */
mask = inv_pow2(mask);
alpha = inv_pow2(alpha);
/* rather then painting, accumulate surrounding colors */
zero_v4(rgba);
for (i = 0; i < PROJ_PIXEL_SOFTEN_TOT; i++) {
float co_ofs[2];
float rgba_tmp[4];
sub_v2_v2v2(co_ofs, projPixel->projCoSS, proj_pixel_soften_v2[i]);
if (project_paint_PickColor(ps, co_ofs, rgba_tmp, NULL, TRUE)) {
add_v4_v4(rgba, rgba_tmp);
accum_tot++;
}
}
if (LIKELY(accum_tot != 0)) {
mul_v4_fl(rgba, 1.0f / (float)accum_tot);
blend_color_mix_float(rgba, projPixel->pixel.f_pt, rgba, alpha);
if (mask < 1.0f) blend_color_mix_float(rgba, projPixel->origColor.f, rgba, mask);
BLI_linklist_prepend_arena(softenPixels, (void *)projPixel, softenArena);
}
}
static void do_projectpaint_soften(ProjPaintState *ps, ProjPixel *projPixel, float alpha, float mask, MemArena *softenArena, LinkNode **softenPixels)
{
unsigned int accum_tot = 0;
unsigned int i;
float rgba[4]; /* convert to byte after */
/* sigh, alpha values tend to need to be a _lot_ stronger with blur */
mask = inv_pow2(mask);
alpha = inv_pow2(alpha);
/* rather then painting, accumulate surrounding colors */
zero_v4(rgba);
for (i = 0; i < PROJ_PIXEL_SOFTEN_TOT; i++) {
float co_ofs[2];
float rgba_tmp[4];
sub_v2_v2v2(co_ofs, projPixel->projCoSS, proj_pixel_soften_v2[i]);
if (project_paint_PickColor(ps, co_ofs, rgba_tmp, NULL, TRUE)) {
add_v4_v4(rgba, rgba_tmp);
accum_tot++;
}
}
if (LIKELY(accum_tot != 0)) {
unsigned char *rgba_ub = projPixel->newColor.ch;
mul_v4_fl(rgba, 1.0f / (float)accum_tot);
IMAPAINT_FLOAT_RGBA_TO_CHAR(rgba_ub, rgba);
blend_color_mix(rgba_ub, projPixel->pixel.ch_pt, rgba_ub, (int)(alpha * 255));
if (mask != 1.0f) blend_color_mix(rgba_ub, projPixel->origColor.ch, rgba_ub, (int)(mask * 255));
BLI_linklist_prepend_arena(softenPixels, (void *)projPixel, softenArena);
}
}
static void do_projectpaint_draw(ProjPaintState *ps, ProjPixel *projPixel, const float rgba[4], float alpha, float mask)
{
unsigned char rgba_ub[4];
@@ -3914,6 +4004,10 @@ static void *do_projectpaint_thread(void *ph_v)
LinkNode *smearPixels = NULL;
LinkNode *smearPixels_f = NULL;
MemArena *smearArena = NULL; /* mem arena for this brush projection only */
LinkNode *softenPixels = NULL;
LinkNode *softenPixels_f = NULL;
MemArena *softenArena = NULL; /* mem arena for this brush projection only */
if (tool == PAINT_TOOL_SMEAR) {
pos_ofs[0] = pos[0] - lastpos[0];
@@ -3921,6 +4015,9 @@ static void *do_projectpaint_thread(void *ph_v)
smearArena = BLI_memarena_new(1 << 16, "paint smear arena");
}
else if (tool == PAINT_TOOL_SOFTEN) {
softenArena = BLI_memarena_new(1 << 16, "paint soften arena");
}
/* printf("brush bounds %d %d %d %d\n", bucketMin[0], bucketMin[1], bucketMax[0], bucketMax[1]); */
@@ -4060,6 +4157,10 @@ static void *do_projectpaint_thread(void *ph_v)
if (is_floatbuf) do_projectpaint_smear_f(ps, projPixel, alpha, mask, smearArena, &smearPixels_f, co);
else do_projectpaint_smear(ps, projPixel, alpha, mask, smearArena, &smearPixels, co);
break;
case PAINT_TOOL_SOFTEN:
if (is_floatbuf) do_projectpaint_soften_f(ps, projPixel, alpha, mask, softenArena, &softenPixels_f);
else do_projectpaint_soften(ps, projPixel, alpha, mask, softenArena, &softenPixels);
break;
default:
if (is_floatbuf) do_projectpaint_draw_f(ps, projPixel, rgba, alpha, mask, use_color_correction);
else do_projectpaint_draw(ps, projPixel, rgba, alpha, mask);
@@ -4094,7 +4195,21 @@ static void *do_projectpaint_thread(void *ph_v)
BLI_memarena_free(smearArena);
}
else if (tool == PAINT_TOOL_SOFTEN) {
for (node = softenPixels; node; node = node->next) { /* this wont run for a float image */
projPixel = node->link;
*projPixel->pixel.uint_pt = projPixel->newColor.uint;
}
for (node = softenPixels_f; node; node = node->next) {
projPixel = node->link;
copy_v4_v4(projPixel->pixel.f_pt, projPixel->newColor.f);
}
BLI_memarena_free(softenArena);
}
return NULL;
}
@@ -4913,13 +5028,6 @@ static int texture_paint_init(bContext *C, wmOperator *op)
pop->first = 1;
op->customdata = pop;
/* XXX: Soften tool does not support projection painting atm, so just disable
* projection for this brush */
if (brush->imagepaint_tool == PAINT_TOOL_SOFTEN) {
settings->imapaint.flag |= IMAGEPAINT_PROJECT_DISABLE;
pop->restore_projection = 1;
}
/* initialize from context */
if (CTX_wm_region_view3d(C)) {