2022-04-15 16:39:50 +02:00
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/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2022 Blender Foundation. All rights reserved. */
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#include "DNA_image_types.h"
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#include "DNA_material_types.h"
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#include "DNA_mesh_types.h"
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#include "DNA_node_types.h"
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#include "DNA_object_types.h"
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#include "ED_paint.h"
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#include "ED_uvedit.h"
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#include "BLI_math.h"
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#include "BLI_math_color_blend.h"
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#include "BLI_task.h"
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#include "IMB_colormanagement.h"
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#include "IMB_imbuf.h"
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#include "BKE_brush.h"
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#include "BKE_image_wrappers.hh"
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#include "BKE_material.h"
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#include "BKE_pbvh.h"
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#include "BKE_pbvh_pixels.hh"
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#include "bmesh.h"
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#include "NOD_shader.h"
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#include "sculpt_intern.h"
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namespace blender::ed::sculpt_paint::paint::image {
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using namespace blender::bke::pbvh::pixels;
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using namespace blender::bke::image;
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struct ImageData {
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Image *image = nullptr;
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ImageUser *image_user = nullptr;
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2022-04-15 18:59:02 +02:00
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~ImageData() = default;
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2022-04-15 16:39:50 +02:00
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static bool init_active_image(Object *ob,
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ImageData *r_image_data,
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PaintModeSettings *paint_mode_settings)
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{
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return BKE_paint_canvas_image_get(
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paint_mode_settings, ob, &r_image_data->image, &r_image_data->image_user);
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}
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};
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struct TexturePaintingUserData {
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Object *ob;
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Brush *brush;
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PBVHNode **nodes;
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ImageData image_data;
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};
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/** Reading and writing to image buffer with 4 float channels. */
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class ImageBufferFloat4 {
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private:
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int pixel_offset;
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public:
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void set_image_position(ImBuf *image_buffer, ushort2 image_pixel_position)
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{
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pixel_offset = int(image_pixel_position.y) * image_buffer->x + int(image_pixel_position.x);
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}
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void next_pixel()
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{
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pixel_offset += 1;
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}
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float4 read_pixel(ImBuf *image_buffer) const
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{
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return &image_buffer->rect_float[pixel_offset * 4];
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}
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void write_pixel(ImBuf *image_buffer, const float4 pixel_data) const
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{
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copy_v4_v4(&image_buffer->rect_float[pixel_offset * 4], pixel_data);
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}
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const char *get_colorspace_name(ImBuf *image_buffer)
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{
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return IMB_colormanagement_get_float_colorspace(image_buffer);
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}
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};
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/** Reading and writing to image buffer with 4 byte channels. */
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class ImageBufferByte4 {
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private:
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int pixel_offset;
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public:
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void set_image_position(ImBuf *image_buffer, ushort2 image_pixel_position)
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{
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pixel_offset = int(image_pixel_position.y) * image_buffer->x + int(image_pixel_position.x);
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}
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void next_pixel()
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{
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pixel_offset += 1;
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}
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float4 read_pixel(ImBuf *image_buffer) const
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{
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float4 result;
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rgba_uchar_to_float(result,
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static_cast<const uchar *>(
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static_cast<const void *>(&(image_buffer->rect[pixel_offset]))));
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return result;
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}
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void write_pixel(ImBuf *image_buffer, const float4 pixel_data) const
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{
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rgba_float_to_uchar(
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static_cast<uchar *>(static_cast<void *>(&image_buffer->rect[pixel_offset])), pixel_data);
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}
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const char *get_colorspace_name(ImBuf *image_buffer)
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{
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return IMB_colormanagement_get_rect_colorspace(image_buffer);
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}
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};
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template<typename ImageBuffer> class PaintingKernel {
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ImageBuffer image_accessor;
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SculptSession *ss;
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const Brush *brush;
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const int thread_id;
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const MVert *mvert;
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float4 brush_color;
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float brush_strength;
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SculptBrushTestFn brush_test_fn;
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SculptBrushTest test;
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/* Pointer to the last used image buffer to detect when buffers are switched. */
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void *last_used_image_buffer_ptr = nullptr;
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const char *last_used_color_space = nullptr;
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public:
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explicit PaintingKernel(SculptSession *ss,
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const Brush *brush,
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const int thread_id,
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const MVert *mvert)
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: ss(ss), brush(brush), thread_id(thread_id), mvert(mvert)
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{
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init_brush_strength();
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init_brush_test();
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}
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bool paint(const Triangles &triangles, const PackedPixelRow &pixel_row, ImBuf *image_buffer)
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{
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image_accessor.set_image_position(image_buffer, pixel_row.start_image_coordinate);
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const TrianglePaintInput triangle = triangles.get_paint_input(pixel_row.triangle_index);
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float3 pixel_pos = get_start_pixel_pos(triangle, pixel_row);
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const float3 delta_pixel_pos = get_delta_pixel_pos(triangle, pixel_row, pixel_pos);
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bool pixels_painted = false;
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for (int x = 0; x < pixel_row.num_pixels; x++) {
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if (!brush_test_fn(&test, pixel_pos)) {
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pixel_pos += delta_pixel_pos;
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image_accessor.next_pixel();
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continue;
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}
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float4 color = image_accessor.read_pixel(image_buffer);
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const float3 normal(0.0f, 0.0f, 0.0f);
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const float3 face_normal(0.0f, 0.0f, 0.0f);
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const float mask = 0.0f;
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const float falloff_strength = SCULPT_brush_strength_factor(
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ss, brush, pixel_pos, sqrtf(test.dist), normal, face_normal, mask, 0, thread_id);
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float4 paint_color = brush_color * falloff_strength * brush_strength;
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float4 buffer_color;
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blend_color_mix_float(buffer_color, color, paint_color);
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buffer_color *= brush->alpha;
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IMB_blend_color_float(color, color, buffer_color, static_cast<IMB_BlendMode>(brush->blend));
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image_accessor.write_pixel(image_buffer, color);
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pixels_painted = true;
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image_accessor.next_pixel();
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pixel_pos += delta_pixel_pos;
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}
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return pixels_painted;
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}
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void init_brush_color(ImBuf *image_buffer)
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{
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const char *to_colorspace = image_accessor.get_colorspace_name(image_buffer);
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if (last_used_color_space == to_colorspace) {
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return;
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}
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copy_v3_v3(brush_color,
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ss->cache->invert ? BKE_brush_secondary_color_get(ss->scene, brush) :
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BKE_brush_color_get(ss->scene, brush));
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/* NOTE: Brush colors are stored in sRGB. We use math color to follow other areas that
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* use brush colors. From there on we use IMB_colormanagement to convert the brush color to the
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* colorspace of the texture. This isn't ideal, but would need more refactoring to make sure
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* that brush colors are stored in scene linear by default. */
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srgb_to_linearrgb_v3_v3(brush_color, brush_color);
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brush_color[3] = 1.0f;
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const char *from_colorspace = IMB_colormanagement_role_colorspace_name_get(
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COLOR_ROLE_SCENE_LINEAR);
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ColormanageProcessor *cm_processor = IMB_colormanagement_colorspace_processor_new(
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from_colorspace, to_colorspace);
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IMB_colormanagement_processor_apply_v4(cm_processor, brush_color);
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IMB_colormanagement_processor_free(cm_processor);
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last_used_color_space = to_colorspace;
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}
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private:
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void init_brush_strength()
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{
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brush_strength = ss->cache->bstrength;
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}
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void init_brush_test()
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{
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brush_test_fn = SCULPT_brush_test_init_with_falloff_shape(ss, &test, brush->falloff_shape);
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}
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/**
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* Extract the starting pixel position from the given encoded_pixels belonging to the triangle.
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*/
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float3 get_start_pixel_pos(const TrianglePaintInput &triangle,
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const PackedPixelRow &encoded_pixels) const
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{
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return init_pixel_pos(triangle, encoded_pixels.start_barycentric_coord);
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}
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/**
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* Extract the delta pixel position that will be used to advance a Pixel instance to the next
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* pixel.
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*/
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float3 get_delta_pixel_pos(const TrianglePaintInput &triangle,
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const PackedPixelRow &encoded_pixels,
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const float3 &start_pixel) const
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{
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float3 result = init_pixel_pos(
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triangle, encoded_pixels.start_barycentric_coord + triangle.delta_barycentric_coord_u);
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return result - start_pixel;
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}
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float3 init_pixel_pos(const TrianglePaintInput &triangle,
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const float2 &barycentric_weights) const
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{
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const int3 &vert_indices = triangle.vert_indices;
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float3 result;
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const float3 barycentric(barycentric_weights.x,
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barycentric_weights.y,
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1.0f - barycentric_weights.x - barycentric_weights.y);
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interp_v3_v3v3v3(result,
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mvert[vert_indices[0]].co,
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mvert[vert_indices[1]].co,
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mvert[vert_indices[2]].co,
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barycentric);
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return result;
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}
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};
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static std::vector<bool> init_triangle_brush_test(SculptSession *ss,
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Triangles &triangles,
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const MVert *mvert)
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{
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std::vector<bool> brush_test(triangles.size());
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SculptBrushTest test;
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SCULPT_brush_test_init(ss, &test);
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float3 brush_min_bounds(test.location[0] - test.radius,
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test.location[1] - test.radius,
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test.location[2] - test.radius);
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float3 brush_max_bounds(test.location[0] + test.radius,
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test.location[1] + test.radius,
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test.location[2] + test.radius);
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for (int triangle_index = 0; triangle_index < triangles.size(); triangle_index++) {
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TrianglePaintInput &triangle = triangles.get_paint_input(triangle_index);
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float3 triangle_min_bounds(mvert[triangle.vert_indices[0]].co);
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float3 triangle_max_bounds(triangle_min_bounds);
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for (int i = 1; i < 3; i++) {
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const float3 &pos = mvert[triangle.vert_indices[i]].co;
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triangle_min_bounds.x = min_ff(triangle_min_bounds.x, pos.x);
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triangle_min_bounds.y = min_ff(triangle_min_bounds.y, pos.y);
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triangle_min_bounds.z = min_ff(triangle_min_bounds.z, pos.z);
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triangle_max_bounds.x = max_ff(triangle_max_bounds.x, pos.x);
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triangle_max_bounds.y = max_ff(triangle_max_bounds.y, pos.y);
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triangle_max_bounds.z = max_ff(triangle_max_bounds.z, pos.z);
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}
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brush_test[triangle_index] = isect_aabb_aabb_v3(
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brush_min_bounds, brush_max_bounds, triangle_min_bounds, triangle_max_bounds);
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}
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return brush_test;
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}
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static void do_paint_pixels(void *__restrict userdata,
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const int n,
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const TaskParallelTLS *__restrict tls)
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{
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TexturePaintingUserData *data = static_cast<TexturePaintingUserData *>(userdata);
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Object *ob = data->ob;
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SculptSession *ss = ob->sculpt;
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const Brush *brush = data->brush;
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PBVHNode *node = data->nodes[n];
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NodeData &node_data = BKE_pbvh_pixels_node_data_get(*node);
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const int thread_id = BLI_task_parallel_thread_id(tls);
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MVert *mvert = SCULPT_mesh_deformed_mverts_get(ss);
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std::vector<bool> brush_test = init_triangle_brush_test(ss, node_data.triangles, mvert);
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PaintingKernel<ImageBufferFloat4> kernel_float4(ss, brush, thread_id, mvert);
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PaintingKernel<ImageBufferByte4> kernel_byte4(ss, brush, thread_id, mvert);
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ImageUser image_user = *data->image_data.image_user;
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bool pixels_updated = false;
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for (UDIMTilePixels &tile_data : node_data.tiles) {
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LISTBASE_FOREACH (ImageTile *, tile, &data->image_data.image->tiles) {
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ImageTileWrapper image_tile(tile);
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if (image_tile.get_tile_number() == tile_data.tile_number) {
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image_user.tile = image_tile.get_tile_number();
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ImBuf *image_buffer = BKE_image_acquire_ibuf(data->image_data.image, &image_user, nullptr);
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if (image_buffer == nullptr) {
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continue;
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}
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if (image_buffer->rect_float != nullptr) {
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kernel_float4.init_brush_color(image_buffer);
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}
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else {
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2022-04-19 08:35:54 +02:00
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kernel_byte4.init_brush_color(image_buffer);
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2022-04-15 16:39:50 +02:00
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}
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for (const PackedPixelRow &pixel_row : tile_data.pixel_rows) {
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if (!brush_test[pixel_row.triangle_index]) {
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continue;
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}
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bool pixels_painted = false;
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if (image_buffer->rect_float != nullptr) {
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pixels_painted = kernel_float4.paint(node_data.triangles, pixel_row, image_buffer);
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}
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else {
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pixels_painted = kernel_byte4.paint(node_data.triangles, pixel_row, image_buffer);
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}
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if (pixels_painted) {
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tile_data.mark_dirty(pixel_row);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
BKE_image_release_ibuf(data->image_data.image, image_buffer, nullptr);
|
|
|
|
pixels_updated |= tile_data.flags.dirty;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
node_data.flags.dirty |= pixels_updated;
|
|
|
|
}
|
|
|
|
|
2022-05-16 15:42:43 +02:00
|
|
|
static void undo_region_tiles(
|
|
|
|
ImBuf *ibuf, int x, int y, int w, int h, int *tx, int *ty, int *tw, int *th)
|
|
|
|
{
|
|
|
|
int srcx = 0, srcy = 0;
|
|
|
|
IMB_rectclip(ibuf, nullptr, &x, &y, &srcx, &srcy, &w, &h);
|
|
|
|
*tw = ((x + w - 1) >> ED_IMAGE_UNDO_TILE_BITS);
|
|
|
|
*th = ((y + h - 1) >> ED_IMAGE_UNDO_TILE_BITS);
|
|
|
|
*tx = (x >> ED_IMAGE_UNDO_TILE_BITS);
|
|
|
|
*ty = (y >> ED_IMAGE_UNDO_TILE_BITS);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void push_undo(const NodeData &node_data,
|
|
|
|
Image &image,
|
|
|
|
ImageUser &image_user,
|
|
|
|
const image::ImageTileWrapper &image_tile,
|
|
|
|
ImBuf &image_buffer,
|
|
|
|
ImBuf **tmpibuf)
|
|
|
|
{
|
|
|
|
for (const UDIMTileUndo &tile_undo : node_data.undo_regions) {
|
|
|
|
if (tile_undo.tile_number != image_tile.get_tile_number()) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
int tilex, tiley, tilew, tileh;
|
|
|
|
ListBase *undo_tiles = ED_image_paint_tile_list_get();
|
|
|
|
undo_region_tiles(&image_buffer,
|
|
|
|
tile_undo.region.xmin,
|
|
|
|
tile_undo.region.ymin,
|
|
|
|
BLI_rcti_size_x(&tile_undo.region),
|
|
|
|
BLI_rcti_size_y(&tile_undo.region),
|
|
|
|
&tilex,
|
|
|
|
&tiley,
|
|
|
|
&tilew,
|
|
|
|
&tileh);
|
|
|
|
for (int ty = tiley; ty <= tileh; ty++) {
|
|
|
|
for (int tx = tilex; tx <= tilew; tx++) {
|
|
|
|
ED_image_paint_tile_push(undo_tiles,
|
|
|
|
&image,
|
|
|
|
&image_buffer,
|
|
|
|
tmpibuf,
|
|
|
|
&image_user,
|
|
|
|
tx,
|
|
|
|
ty,
|
|
|
|
nullptr,
|
|
|
|
nullptr,
|
|
|
|
true,
|
|
|
|
true);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void do_push_undo_tile(void *__restrict userdata,
|
|
|
|
const int n,
|
|
|
|
const TaskParallelTLS *__restrict UNUSED(tls))
|
|
|
|
{
|
|
|
|
TexturePaintingUserData *data = static_cast<TexturePaintingUserData *>(userdata);
|
|
|
|
PBVHNode *node = data->nodes[n];
|
|
|
|
|
|
|
|
NodeData &node_data = BKE_pbvh_pixels_node_data_get(*node);
|
|
|
|
Image *image = data->image_data.image;
|
|
|
|
ImageUser *image_user = data->image_data.image_user;
|
|
|
|
|
|
|
|
ImBuf *tmpibuf = nullptr;
|
|
|
|
ImageUser local_image_user = *image_user;
|
|
|
|
LISTBASE_FOREACH (ImageTile *, tile, &image->tiles) {
|
|
|
|
image::ImageTileWrapper image_tile(tile);
|
|
|
|
local_image_user.tile = image_tile.get_tile_number();
|
|
|
|
ImBuf *image_buffer = BKE_image_acquire_ibuf(image, &local_image_user, nullptr);
|
|
|
|
if (image_buffer == nullptr) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
push_undo(node_data, *image, *image_user, image_tile, *image_buffer, &tmpibuf);
|
|
|
|
BKE_image_release_ibuf(image, image_buffer, nullptr);
|
|
|
|
}
|
|
|
|
if (tmpibuf) {
|
|
|
|
IMB_freeImBuf(tmpibuf);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-04-15 16:39:50 +02:00
|
|
|
static void do_mark_dirty_regions(void *__restrict userdata,
|
|
|
|
const int n,
|
|
|
|
const TaskParallelTLS *__restrict UNUSED(tls))
|
|
|
|
{
|
|
|
|
TexturePaintingUserData *data = static_cast<TexturePaintingUserData *>(userdata);
|
|
|
|
PBVHNode *node = data->nodes[n];
|
|
|
|
BKE_pbvh_pixels_mark_image_dirty(*node, *data->image_data.image, *data->image_data.image_user);
|
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace blender::ed::sculpt_paint::paint::image
|
|
|
|
|
|
|
|
extern "C" {
|
|
|
|
|
|
|
|
using namespace blender::ed::sculpt_paint::paint::image;
|
|
|
|
|
|
|
|
bool SCULPT_paint_image_canvas_get(PaintModeSettings *paint_mode_settings,
|
|
|
|
Object *ob,
|
|
|
|
Image **r_image,
|
|
|
|
ImageUser **r_image_user)
|
|
|
|
{
|
2022-05-19 02:14:30 +02:00
|
|
|
*r_image = nullptr;
|
|
|
|
*r_image_user = nullptr;
|
|
|
|
|
2022-04-15 16:39:50 +02:00
|
|
|
ImageData image_data;
|
|
|
|
if (!ImageData::init_active_image(ob, &image_data, paint_mode_settings)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
*r_image = image_data.image;
|
|
|
|
*r_image_user = image_data.image_user;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool SCULPT_use_image_paint_brush(PaintModeSettings *settings, Object *ob)
|
|
|
|
{
|
|
|
|
if (!U.experimental.use_sculpt_texture_paint) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
if (ob->type != OB_MESH) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
Image *image;
|
|
|
|
ImageUser *image_user;
|
|
|
|
return BKE_paint_canvas_image_get(settings, ob, &image, &image_user);
|
|
|
|
}
|
|
|
|
|
|
|
|
void SCULPT_do_paint_brush_image(
|
|
|
|
PaintModeSettings *paint_mode_settings, Sculpt *sd, Object *ob, PBVHNode **nodes, int totnode)
|
|
|
|
{
|
|
|
|
Brush *brush = BKE_paint_brush(&sd->paint);
|
|
|
|
|
|
|
|
TexturePaintingUserData data = {nullptr};
|
|
|
|
data.ob = ob;
|
|
|
|
data.brush = brush;
|
|
|
|
data.nodes = nodes;
|
|
|
|
|
|
|
|
if (!ImageData::init_active_image(ob, &data.image_data, paint_mode_settings)) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
TaskParallelSettings settings;
|
|
|
|
BKE_pbvh_parallel_range_settings(&settings, true, totnode);
|
2022-05-16 15:42:43 +02:00
|
|
|
BLI_task_parallel_range(0, totnode, &data, do_push_undo_tile, &settings);
|
2022-04-15 16:39:50 +02:00
|
|
|
BLI_task_parallel_range(0, totnode, &data, do_paint_pixels, &settings);
|
|
|
|
|
|
|
|
TaskParallelSettings settings_flush;
|
|
|
|
BKE_pbvh_parallel_range_settings(&settings_flush, false, totnode);
|
|
|
|
BLI_task_parallel_range(0, totnode, &data, do_mark_dirty_regions, &settings_flush);
|
|
|
|
}
|
|
|
|
}
|