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renderer_canvas_cull.cpp
2173 lines (1734 loc) · 74.3 KB
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renderer_canvas_cull.cpp
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/**************************************************************************/
/* renderer_canvas_cull.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "renderer_canvas_cull.h"
#include "core/config/project_settings.h"
#include "core/math/geometry_2d.h"
#include "renderer_viewport.h"
#include "rendering_server_default.h"
#include "rendering_server_globals.h"
#include "servers/rendering/storage/texture_storage.h"
void RendererCanvasCull::_render_canvas_item_tree(RID p_to_render_target, Canvas::ChildItem *p_child_items, int p_child_item_count, Item *p_canvas_item, const Transform2D &p_transform, const Rect2 &p_clip_rect, const Color &p_modulate, RendererCanvasRender::Light *p_lights, RendererCanvasRender::Light *p_directional_lights, RenderingServer::CanvasItemTextureFilter p_default_filter, RenderingServer::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel, uint32_t canvas_cull_mask) {
RENDER_TIMESTAMP("Cull CanvasItem Tree");
memset(z_list, 0, z_range * sizeof(RendererCanvasRender::Item *));
memset(z_last_list, 0, z_range * sizeof(RendererCanvasRender::Item *));
for (int i = 0; i < p_child_item_count; i++) {
_cull_canvas_item(p_child_items[i].item, p_transform, p_clip_rect, Color(1, 1, 1, 1), 0, z_list, z_last_list, nullptr, nullptr, true, canvas_cull_mask);
}
if (p_canvas_item) {
_cull_canvas_item(p_canvas_item, p_transform, p_clip_rect, Color(1, 1, 1, 1), 0, z_list, z_last_list, nullptr, nullptr, true, canvas_cull_mask);
}
RendererCanvasRender::Item *list = nullptr;
RendererCanvasRender::Item *list_end = nullptr;
for (int i = 0; i < z_range; i++) {
if (!z_list[i]) {
continue;
}
if (!list) {
list = z_list[i];
list_end = z_last_list[i];
} else {
list_end->next = z_list[i];
list_end = z_last_list[i];
}
}
RENDER_TIMESTAMP("Render CanvasItems");
bool sdf_flag;
RSG::canvas_render->canvas_render_items(p_to_render_target, list, p_modulate, p_lights, p_directional_lights, p_transform, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, sdf_flag);
if (sdf_flag) {
sdf_used = true;
}
}
void _collect_ysort_children(RendererCanvasCull::Item *p_canvas_item, Transform2D p_transform, RendererCanvasCull::Item *p_material_owner, const Color &p_modulate, RendererCanvasCull::Item **r_items, int &r_index, int p_z) {
int child_item_count = p_canvas_item->child_items.size();
RendererCanvasCull::Item **child_items = p_canvas_item->child_items.ptrw();
for (int i = 0; i < child_item_count; i++) {
int abs_z = 0;
if (child_items[i]->visible) {
if (r_items) {
r_items[r_index] = child_items[i];
child_items[i]->ysort_xform = p_transform;
child_items[i]->ysort_pos = p_transform.xform(child_items[i]->xform.columns[2]);
child_items[i]->material_owner = child_items[i]->use_parent_material ? p_material_owner : nullptr;
child_items[i]->ysort_modulate = p_modulate;
child_items[i]->ysort_index = r_index;
child_items[i]->ysort_parent_abs_z_index = p_z;
// Y sorted canvas items are flattened into r_items. Calculate their absolute z index to use when rendering r_items.
if (child_items[i]->z_relative) {
abs_z = CLAMP(p_z + child_items[i]->z_index, RS::CANVAS_ITEM_Z_MIN, RS::CANVAS_ITEM_Z_MAX);
} else {
abs_z = child_items[i]->z_index;
}
}
r_index++;
if (child_items[i]->sort_y) {
_collect_ysort_children(child_items[i], p_transform * child_items[i]->xform, child_items[i]->use_parent_material ? p_material_owner : child_items[i], p_modulate * child_items[i]->modulate, r_items, r_index, abs_z);
}
}
}
}
void _mark_ysort_dirty(RendererCanvasCull::Item *ysort_owner, RID_Owner<RendererCanvasCull::Item, true> &canvas_item_owner) {
do {
ysort_owner->ysort_children_count = -1;
ysort_owner = canvas_item_owner.owns(ysort_owner->parent) ? canvas_item_owner.get_or_null(ysort_owner->parent) : nullptr;
} while (ysort_owner && ysort_owner->sort_y);
}
void RendererCanvasCull::_attach_canvas_item_for_draw(RendererCanvasCull::Item *ci, RendererCanvasCull::Item *p_canvas_clip, RendererCanvasRender::Item **r_z_list, RendererCanvasRender::Item **r_z_last_list, const Transform2D &xform, const Rect2 &p_clip_rect, Rect2 global_rect, const Color &modulate, int p_z, RendererCanvasCull::Item *p_material_owner, bool p_use_canvas_group, RendererCanvasRender::Item *canvas_group_from, const Transform2D &p_xform) {
if (ci->copy_back_buffer) {
ci->copy_back_buffer->screen_rect = xform.xform(ci->copy_back_buffer->rect).intersection(p_clip_rect);
}
if (p_use_canvas_group) {
int zidx = p_z - RS::CANVAS_ITEM_Z_MIN;
if (canvas_group_from == nullptr) {
// no list before processing this item, means must put stuff in group from the beginning of list.
canvas_group_from = r_z_list[zidx];
} else {
// there was a list before processing, so begin group from this one.
canvas_group_from = canvas_group_from->next;
}
if (canvas_group_from) {
// Has a place to begin the group from!
//compute a global rect (in global coords) for children in the same z layer
Rect2 rect_accum;
RendererCanvasRender::Item *c = canvas_group_from;
while (c) {
if (c == canvas_group_from) {
rect_accum = c->global_rect_cache;
} else {
rect_accum = rect_accum.merge(c->global_rect_cache);
}
c = c->next;
}
// We have two choices now, if user has drawn something, we must assume users wants to draw the "mask", so compute the size based on this.
// If nothing has been drawn, we just take it over and draw it ourselves.
if (ci->canvas_group->fit_empty && (ci->commands == nullptr || (ci->commands->next == nullptr && ci->commands->type == RendererCanvasCull::Item::Command::TYPE_RECT && (static_cast<RendererCanvasCull::Item::CommandRect *>(ci->commands)->flags & RendererCanvasRender::CANVAS_RECT_IS_GROUP)))) {
// No commands, or sole command is the one used to draw, so we (re)create the draw command.
ci->clear();
if (rect_accum == Rect2()) {
rect_accum.size = Size2(1, 1);
}
rect_accum = rect_accum.grow(ci->canvas_group->fit_margin);
//draw it?
RendererCanvasRender::Item::CommandRect *crect = ci->alloc_command<RendererCanvasRender::Item::CommandRect>();
crect->flags = RendererCanvasRender::CANVAS_RECT_IS_GROUP; // so we can recognize it later
crect->rect = xform.affine_inverse().xform(rect_accum);
crect->modulate = Color(1, 1, 1, 1);
//the global rect is used to do the copying, so update it
global_rect = rect_accum.grow(ci->canvas_group->clear_margin); //grow again by clear margin
global_rect.position += p_clip_rect.position;
} else {
global_rect.position -= p_clip_rect.position;
global_rect = global_rect.merge(rect_accum); //must use both rects for this
global_rect = global_rect.grow(ci->canvas_group->clear_margin); //grow by clear margin
global_rect.position += p_clip_rect.position;
}
// Very important that this is cleared after used in RendererCanvasRender to avoid
// potential crashes.
canvas_group_from->canvas_group_owner = ci;
}
}
if (((ci->commands != nullptr || ci->visibility_notifier) && p_clip_rect.intersects(global_rect, true)) || ci->vp_render || ci->copy_back_buffer) {
//something to draw?
if (ci->update_when_visible) {
RenderingServerDefault::redraw_request();
}
if (ci->commands != nullptr || ci->copy_back_buffer) {
ci->final_transform = xform;
ci->final_modulate = modulate * ci->self_modulate;
ci->global_rect_cache = global_rect;
ci->global_rect_cache.position -= p_clip_rect.position;
ci->light_masked = false;
int zidx = p_z - RS::CANVAS_ITEM_Z_MIN;
if (r_z_last_list[zidx]) {
r_z_last_list[zidx]->next = ci;
r_z_last_list[zidx] = ci;
} else {
r_z_list[zidx] = ci;
r_z_last_list[zidx] = ci;
}
ci->z_final = p_z;
ci->next = nullptr;
}
if (ci->visibility_notifier) {
if (!ci->visibility_notifier->visible_element.in_list()) {
visibility_notifier_list.add(&ci->visibility_notifier->visible_element);
ci->visibility_notifier->just_visible = true;
}
ci->visibility_notifier->visible_in_frame = RSG::rasterizer->get_frame_number();
}
}
}
void RendererCanvasCull::_cull_canvas_item(Item *p_canvas_item, const Transform2D &p_transform, const Rect2 &p_clip_rect, const Color &p_modulate, int p_z, RendererCanvasRender::Item **r_z_list, RendererCanvasRender::Item **r_z_last_list, Item *p_canvas_clip, Item *p_material_owner, bool allow_y_sort, uint32_t canvas_cull_mask) {
Item *ci = p_canvas_item;
if (!ci->visible) {
return;
}
if (!(ci->visibility_layer & canvas_cull_mask)) {
return;
}
if (ci->children_order_dirty) {
ci->child_items.sort_custom<ItemIndexSort>();
ci->children_order_dirty = false;
}
Rect2 rect = ci->get_rect();
if (ci->visibility_notifier) {
if (ci->visibility_notifier->area.size != Vector2()) {
rect = rect.merge(ci->visibility_notifier->area);
}
}
Transform2D xform = ci->xform;
if (snapping_2d_transforms_to_pixel) {
xform.columns[2] = xform.columns[2].floor();
}
xform = p_transform * xform;
Rect2 global_rect = xform.xform(rect);
global_rect.position += p_clip_rect.position;
if (ci->use_parent_material && p_material_owner) {
ci->material_owner = p_material_owner;
} else {
p_material_owner = ci;
ci->material_owner = nullptr;
}
Color modulate(ci->modulate.r * p_modulate.r, ci->modulate.g * p_modulate.g, ci->modulate.b * p_modulate.b, ci->modulate.a * p_modulate.a);
if (modulate.a < 0.007) {
return;
}
int child_item_count = ci->child_items.size();
Item **child_items = ci->child_items.ptrw();
if (ci->clip) {
if (p_canvas_clip != nullptr) {
ci->final_clip_rect = p_canvas_clip->final_clip_rect.intersection(global_rect);
} else {
ci->final_clip_rect = p_clip_rect.intersection(global_rect);
}
if (ci->final_clip_rect.size.width < 0.5 || ci->final_clip_rect.size.height < 0.5) {
// The clip rect area is 0, so don't draw the item.
return;
}
ci->final_clip_rect.position = ci->final_clip_rect.position.round();
ci->final_clip_rect.size = ci->final_clip_rect.size.round();
ci->final_clip_owner = ci;
} else {
ci->final_clip_owner = p_canvas_clip;
}
int parent_z = p_z;
if (ci->z_relative) {
p_z = CLAMP(p_z + ci->z_index, RS::CANVAS_ITEM_Z_MIN, RS::CANVAS_ITEM_Z_MAX);
} else {
p_z = ci->z_index;
}
if (ci->sort_y) {
if (allow_y_sort) {
if (ci->ysort_children_count == -1) {
ci->ysort_children_count = 0;
_collect_ysort_children(ci, Transform2D(), p_material_owner, Color(1, 1, 1, 1), nullptr, ci->ysort_children_count, p_z);
}
child_item_count = ci->ysort_children_count + 1;
child_items = (Item **)alloca(child_item_count * sizeof(Item *));
ci->ysort_parent_abs_z_index = parent_z;
child_items[0] = ci;
int i = 1;
_collect_ysort_children(ci, Transform2D(), p_material_owner, Color(1, 1, 1, 1), child_items, i, p_z);
ci->ysort_xform = ci->xform.affine_inverse();
ci->ysort_modulate = Color(1, 1, 1, 1);
SortArray<Item *, ItemPtrSort> sorter;
sorter.sort(child_items, child_item_count);
for (i = 0; i < child_item_count; i++) {
_cull_canvas_item(child_items[i], xform * child_items[i]->ysort_xform, p_clip_rect, modulate * child_items[i]->ysort_modulate, child_items[i]->ysort_parent_abs_z_index, r_z_list, r_z_last_list, (Item *)ci->final_clip_owner, (Item *)child_items[i]->material_owner, false, canvas_cull_mask);
}
} else {
RendererCanvasRender::Item *canvas_group_from = nullptr;
bool use_canvas_group = ci->canvas_group != nullptr && (ci->canvas_group->fit_empty || ci->commands != nullptr);
if (use_canvas_group) {
int zidx = p_z - RS::CANVAS_ITEM_Z_MIN;
canvas_group_from = r_z_last_list[zidx];
}
_attach_canvas_item_for_draw(ci, p_canvas_clip, r_z_list, r_z_last_list, xform, p_clip_rect, global_rect, modulate, p_z, p_material_owner, use_canvas_group, canvas_group_from, xform);
}
} else {
RendererCanvasRender::Item *canvas_group_from = nullptr;
bool use_canvas_group = ci->canvas_group != nullptr && (ci->canvas_group->fit_empty || ci->commands != nullptr);
if (use_canvas_group) {
int zidx = p_z - RS::CANVAS_ITEM_Z_MIN;
canvas_group_from = r_z_last_list[zidx];
}
for (int i = 0; i < child_item_count; i++) {
if (!child_items[i]->behind && !use_canvas_group) {
continue;
}
_cull_canvas_item(child_items[i], xform, p_clip_rect, modulate, p_z, r_z_list, r_z_last_list, (Item *)ci->final_clip_owner, p_material_owner, true, canvas_cull_mask);
}
_attach_canvas_item_for_draw(ci, p_canvas_clip, r_z_list, r_z_last_list, xform, p_clip_rect, global_rect, modulate, p_z, p_material_owner, use_canvas_group, canvas_group_from, xform);
for (int i = 0; i < child_item_count; i++) {
if (child_items[i]->behind || use_canvas_group) {
continue;
}
_cull_canvas_item(child_items[i], xform, p_clip_rect, modulate, p_z, r_z_list, r_z_last_list, (Item *)ci->final_clip_owner, p_material_owner, true, canvas_cull_mask);
}
}
}
void RendererCanvasCull::render_canvas(RID p_render_target, Canvas *p_canvas, const Transform2D &p_transform, RendererCanvasRender::Light *p_lights, RendererCanvasRender::Light *p_directional_lights, const Rect2 &p_clip_rect, RenderingServer::CanvasItemTextureFilter p_default_filter, RenderingServer::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_transforms_to_pixel, bool p_snap_2d_vertices_to_pixel, uint32_t canvas_cull_mask) {
RENDER_TIMESTAMP("> Render Canvas");
sdf_used = false;
snapping_2d_transforms_to_pixel = p_snap_2d_transforms_to_pixel;
if (p_canvas->children_order_dirty) {
p_canvas->child_items.sort();
p_canvas->children_order_dirty = false;
}
int l = p_canvas->child_items.size();
Canvas::ChildItem *ci = p_canvas->child_items.ptrw();
bool has_mirror = false;
for (int i = 0; i < l; i++) {
if (ci[i].mirror.x || ci[i].mirror.y) {
has_mirror = true;
break;
}
}
if (!has_mirror) {
_render_canvas_item_tree(p_render_target, ci, l, nullptr, p_transform, p_clip_rect, p_canvas->modulate, p_lights, p_directional_lights, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, canvas_cull_mask);
} else {
//used for parallaxlayer mirroring
for (int i = 0; i < l; i++) {
const Canvas::ChildItem &ci2 = p_canvas->child_items[i];
_render_canvas_item_tree(p_render_target, nullptr, 0, ci2.item, p_transform, p_clip_rect, p_canvas->modulate, p_lights, p_directional_lights, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, canvas_cull_mask);
//mirroring (useful for scrolling backgrounds)
if (ci2.mirror.x != 0) {
Transform2D xform2 = p_transform * Transform2D(0, Vector2(ci2.mirror.x, 0));
_render_canvas_item_tree(p_render_target, nullptr, 0, ci2.item, xform2, p_clip_rect, p_canvas->modulate, p_lights, p_directional_lights, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, canvas_cull_mask);
}
if (ci2.mirror.y != 0) {
Transform2D xform2 = p_transform * Transform2D(0, Vector2(0, ci2.mirror.y));
_render_canvas_item_tree(p_render_target, nullptr, 0, ci2.item, xform2, p_clip_rect, p_canvas->modulate, p_lights, p_directional_lights, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, canvas_cull_mask);
}
if (ci2.mirror.y != 0 && ci2.mirror.x != 0) {
Transform2D xform2 = p_transform * Transform2D(0, ci2.mirror);
_render_canvas_item_tree(p_render_target, nullptr, 0, ci2.item, xform2, p_clip_rect, p_canvas->modulate, p_lights, p_directional_lights, p_default_filter, p_default_repeat, p_snap_2d_vertices_to_pixel, canvas_cull_mask);
}
}
}
RENDER_TIMESTAMP("< Render Canvas");
}
bool RendererCanvasCull::was_sdf_used() {
return sdf_used;
}
RID RendererCanvasCull::canvas_allocate() {
return canvas_owner.allocate_rid();
}
void RendererCanvasCull::canvas_initialize(RID p_rid) {
canvas_owner.initialize_rid(p_rid);
}
void RendererCanvasCull::canvas_set_item_mirroring(RID p_canvas, RID p_item, const Point2 &p_mirroring) {
Canvas *canvas = canvas_owner.get_or_null(p_canvas);
ERR_FAIL_NULL(canvas);
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
int idx = canvas->find_item(canvas_item);
ERR_FAIL_COND(idx == -1);
canvas->child_items.write[idx].mirror = p_mirroring;
}
void RendererCanvasCull::canvas_set_modulate(RID p_canvas, const Color &p_color) {
Canvas *canvas = canvas_owner.get_or_null(p_canvas);
ERR_FAIL_NULL(canvas);
canvas->modulate = p_color;
}
void RendererCanvasCull::canvas_set_disable_scale(bool p_disable) {
disable_scale = p_disable;
}
void RendererCanvasCull::canvas_set_parent(RID p_canvas, RID p_parent, float p_scale) {
Canvas *canvas = canvas_owner.get_or_null(p_canvas);
ERR_FAIL_NULL(canvas);
canvas->parent = p_parent;
canvas->parent_scale = p_scale;
}
RID RendererCanvasCull::canvas_item_allocate() {
return canvas_item_owner.allocate_rid();
}
void RendererCanvasCull::canvas_item_initialize(RID p_rid) {
canvas_item_owner.initialize_rid(p_rid);
}
void RendererCanvasCull::canvas_item_set_parent(RID p_item, RID p_parent) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
if (canvas_item->parent.is_valid()) {
if (canvas_owner.owns(canvas_item->parent)) {
Canvas *canvas = canvas_owner.get_or_null(canvas_item->parent);
canvas->erase_item(canvas_item);
} else if (canvas_item_owner.owns(canvas_item->parent)) {
Item *item_owner = canvas_item_owner.get_or_null(canvas_item->parent);
item_owner->child_items.erase(canvas_item);
if (item_owner->sort_y) {
_mark_ysort_dirty(item_owner, canvas_item_owner);
}
}
canvas_item->parent = RID();
}
if (p_parent.is_valid()) {
if (canvas_owner.owns(p_parent)) {
Canvas *canvas = canvas_owner.get_or_null(p_parent);
Canvas::ChildItem ci;
ci.item = canvas_item;
canvas->child_items.push_back(ci);
canvas->children_order_dirty = true;
} else if (canvas_item_owner.owns(p_parent)) {
Item *item_owner = canvas_item_owner.get_or_null(p_parent);
item_owner->child_items.push_back(canvas_item);
item_owner->children_order_dirty = true;
if (item_owner->sort_y) {
_mark_ysort_dirty(item_owner, canvas_item_owner);
}
} else {
ERR_FAIL_MSG("Invalid parent.");
}
}
canvas_item->parent = p_parent;
}
void RendererCanvasCull::canvas_item_set_visible(RID p_item, bool p_visible) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->visible = p_visible;
_mark_ysort_dirty(canvas_item, canvas_item_owner);
}
void RendererCanvasCull::canvas_item_set_light_mask(RID p_item, int p_mask) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->light_mask = p_mask;
}
void RendererCanvasCull::canvas_item_set_transform(RID p_item, const Transform2D &p_transform) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->xform = p_transform;
}
void RendererCanvasCull::canvas_item_set_visibility_layer(RID p_item, uint32_t p_visibility_layer) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->visibility_layer = p_visibility_layer;
}
uint32_t RendererCanvasCull::canvas_item_get_visibility_layer(RID p_item) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
if (!canvas_item)
return 0;
return canvas_item->visibility_layer;
}
void RendererCanvasCull::canvas_item_set_clip(RID p_item, bool p_clip) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->clip = p_clip;
}
void RendererCanvasCull::canvas_item_set_distance_field_mode(RID p_item, bool p_enable) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->distance_field = p_enable;
}
void RendererCanvasCull::canvas_item_set_custom_rect(RID p_item, bool p_custom_rect, const Rect2 &p_rect) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->custom_rect = p_custom_rect;
canvas_item->rect = p_rect;
}
void RendererCanvasCull::canvas_item_set_modulate(RID p_item, const Color &p_color) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->modulate = p_color;
}
void RendererCanvasCull::canvas_item_set_self_modulate(RID p_item, const Color &p_color) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->self_modulate = p_color;
}
void RendererCanvasCull::canvas_item_set_draw_behind_parent(RID p_item, bool p_enable) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->behind = p_enable;
}
void RendererCanvasCull::canvas_item_set_update_when_visible(RID p_item, bool p_update) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
canvas_item->update_when_visible = p_update;
}
void RendererCanvasCull::canvas_item_add_line(RID p_item, const Point2 &p_from, const Point2 &p_to, const Color &p_color, float p_width, bool p_antialiased) {
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
Item::CommandPrimitive *line = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(line);
Vector2 diff = (p_from - p_to);
Vector2 dir = diff.orthogonal().normalized();
Vector2 t = dir * p_width * 0.5;
Vector2 begin_left;
Vector2 begin_right;
Vector2 end_left;
Vector2 end_right;
if (p_width >= 0.0) {
begin_left = p_from + t;
begin_right = p_from - t;
end_left = p_to + t;
end_right = p_to - t;
line->points[0] = begin_left;
line->points[1] = begin_right;
line->points[2] = end_right;
line->points[3] = end_left;
line->point_count = 4;
} else {
begin_left = p_from;
begin_right = p_from;
end_left = p_to;
end_right = p_to;
line->points[0] = p_from;
line->points[1] = p_to;
line->point_count = 2;
}
for (uint32_t i = 0; i < line->point_count; i++) {
line->colors[i] = p_color;
}
if (p_antialiased) {
// Use the same antialiasing feather size as StyleBoxFlat's default
// (but doubled, as it's specified for both sides here).
// This value is empirically determined to provide good antialiasing quality
// while not making lines appear too soft.
float border_size = 1.25f;
if (0.0f <= p_width && p_width < 1.0f) {
border_size *= p_width;
}
Vector2 dir2 = diff.normalized();
Vector2 border = dir * border_size;
Vector2 border2 = dir2 * border_size;
Color transparent = Color(p_color.r, p_color.g, p_color.b, 0.0);
{
Item::CommandPrimitive *left_border = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(left_border);
left_border->points[0] = begin_left;
left_border->points[1] = begin_left + border;
left_border->points[2] = end_left + border;
left_border->points[3] = end_left;
left_border->colors[0] = p_color;
left_border->colors[1] = transparent;
left_border->colors[2] = transparent;
left_border->colors[3] = p_color;
left_border->point_count = 4;
}
{
Item::CommandPrimitive *right_border = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(right_border);
right_border->points[0] = begin_right;
right_border->points[1] = begin_right - border;
right_border->points[2] = end_right - border;
right_border->points[3] = end_right;
right_border->colors[0] = p_color;
right_border->colors[1] = transparent;
right_border->colors[2] = transparent;
right_border->colors[3] = p_color;
right_border->point_count = 4;
}
{
Item::CommandPrimitive *top_border = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(top_border);
top_border->points[0] = begin_left;
top_border->points[1] = begin_left + border2;
top_border->points[2] = begin_right + border2;
top_border->points[3] = begin_right;
top_border->colors[0] = p_color;
top_border->colors[1] = transparent;
top_border->colors[2] = transparent;
top_border->colors[3] = p_color;
top_border->point_count = 4;
}
{
Item::CommandPrimitive *bottom_border = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(bottom_border);
bottom_border->points[0] = end_left;
bottom_border->points[1] = end_left - border2;
bottom_border->points[2] = end_right - border2;
bottom_border->points[3] = end_right;
bottom_border->colors[0] = p_color;
bottom_border->colors[1] = transparent;
bottom_border->colors[2] = transparent;
bottom_border->colors[3] = p_color;
bottom_border->point_count = 4;
}
{
Item::CommandPrimitive *top_left_corner = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(top_left_corner);
top_left_corner->points[0] = begin_left;
top_left_corner->points[1] = begin_left + border2;
top_left_corner->points[2] = begin_left + border + border2;
top_left_corner->points[3] = begin_left + border;
top_left_corner->colors[0] = p_color;
top_left_corner->colors[1] = transparent;
top_left_corner->colors[2] = transparent;
top_left_corner->colors[3] = transparent;
top_left_corner->point_count = 4;
}
{
Item::CommandPrimitive *top_right_corner = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(top_right_corner);
top_right_corner->points[0] = begin_right;
top_right_corner->points[1] = begin_right + border2;
top_right_corner->points[2] = begin_right - border + border2;
top_right_corner->points[3] = begin_right - border;
top_right_corner->colors[0] = p_color;
top_right_corner->colors[1] = transparent;
top_right_corner->colors[2] = transparent;
top_right_corner->colors[3] = transparent;
top_right_corner->point_count = 4;
}
{
Item::CommandPrimitive *bottom_left_corner = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(bottom_left_corner);
bottom_left_corner->points[0] = end_left;
bottom_left_corner->points[1] = end_left - border2;
bottom_left_corner->points[2] = end_left + border - border2;
bottom_left_corner->points[3] = end_left + border;
bottom_left_corner->colors[0] = p_color;
bottom_left_corner->colors[1] = transparent;
bottom_left_corner->colors[2] = transparent;
bottom_left_corner->colors[3] = transparent;
bottom_left_corner->point_count = 4;
}
{
Item::CommandPrimitive *bottom_right_corner = canvas_item->alloc_command<Item::CommandPrimitive>();
ERR_FAIL_NULL(bottom_right_corner);
bottom_right_corner->points[0] = end_right;
bottom_right_corner->points[1] = end_right - border2;
bottom_right_corner->points[2] = end_right - border - border2;
bottom_right_corner->points[3] = end_right - border;
bottom_right_corner->colors[0] = p_color;
bottom_right_corner->colors[1] = transparent;
bottom_right_corner->colors[2] = transparent;
bottom_right_corner->colors[3] = transparent;
bottom_right_corner->point_count = 4;
}
}
}
static Vector2 compute_polyline_segment_dir(const Vector<Point2> &p_points, int p_index, const Vector2 &p_prev_segment_dir) {
int point_count = p_points.size();
bool is_last_point = (p_index == point_count - 1);
Vector2 segment_dir;
if (is_last_point) {
segment_dir = p_prev_segment_dir;
} else {
segment_dir = (p_points[p_index + 1] - p_points[p_index]).normalized();
if (segment_dir.is_zero_approx()) {
segment_dir = p_prev_segment_dir;
}
}
return segment_dir;
}
static Vector2 compute_polyline_edge_offset_clamped(const Vector2 &p_segment_dir, const Vector2 &p_prev_segment_dir) {
Vector2 bisector;
float length = 1.0f;
bisector = (p_prev_segment_dir * p_segment_dir.length() - p_segment_dir * p_prev_segment_dir.length()).normalized();
float angle = atan2f(bisector.cross(p_prev_segment_dir), bisector.dot(p_prev_segment_dir));
float sin_angle = sinf(angle);
if (!Math::is_zero_approx(sin_angle) && !p_segment_dir.is_equal_approx(p_prev_segment_dir)) {
length = 1.0f / sin_angle;
length = CLAMP(length, -3.0f, 3.0f);
} else {
bisector = p_segment_dir.orthogonal();
}
if (bisector.is_zero_approx()) {
bisector = p_segment_dir.orthogonal();
}
return bisector * length;
}
void RendererCanvasCull::canvas_item_add_polyline(RID p_item, const Vector<Point2> &p_points, const Vector<Color> &p_colors, float p_width, bool p_antialiased) {
ERR_FAIL_COND(p_points.size() < 2);
Item *canvas_item = canvas_item_owner.get_or_null(p_item);
ERR_FAIL_NULL(canvas_item);
Color color = Color(1, 1, 1, 1);
Vector<int> indices;
int point_count = p_points.size();
Item::CommandPolygon *pline = canvas_item->alloc_command<Item::CommandPolygon>();
ERR_FAIL_NULL(pline);
if (p_width < 0) {
if (p_antialiased) {
WARN_PRINT("Antialiasing is not supported for thin polylines drawn using line strips (`p_width < 0`).");
}
pline->primitive = RS::PRIMITIVE_LINE_STRIP;
if (p_colors.size() == 1 || p_colors.size() == point_count) {
pline->polygon.create(indices, p_points, p_colors);
} else {
Vector<Color> colors;
if (p_colors.is_empty()) {
colors.push_back(color);
} else {
colors.resize(point_count);
Color *colors_ptr = colors.ptrw();
for (int i = 0; i < point_count; i++) {
if (i < p_colors.size()) {
color = p_colors[i];
}
colors_ptr[i] = color;
}
}
pline->polygon.create(indices, p_points, colors);
}
return;
}
int polyline_point_count = point_count * 2;
bool loop = p_points[0].is_equal_approx(p_points[point_count - 1]);
Vector2 first_segment_dir;
Vector2 last_segment_dir;
// Search for first non-zero vector between two segments.
for (int i = 1; i < point_count; i++) {
first_segment_dir = (p_points[i] - p_points[i - 1]).normalized();
if (!first_segment_dir.is_zero_approx()) {
break;
}
}
// Search for last non-zero vector between two segments.
for (int i = point_count - 1; i >= 1; i--) {
last_segment_dir = (p_points[i] - p_points[i - 1]).normalized();
if (!last_segment_dir.is_zero_approx()) {
break;
}
}
PackedColorArray colors;
PackedVector2Array points;
// Additional 2+2 vertices to antialias begin+end of the middle triangle strip.
colors.resize(polyline_point_count + ((p_antialiased && !loop) ? 4 : 0));
points.resize(polyline_point_count + ((p_antialiased && !loop) ? 4 : 0));
Vector2 *points_ptr = points.ptrw();
Color *colors_ptr = colors.ptrw();
if (p_antialiased) {
// Use the same antialiasing feather size as StyleBoxFlat's default
// (but doubled, as it's specified for both sides here).
// This value is empirically determined to provide good antialiasing quality
// while not making lines appear too soft.
float border_size = 1.25f;
if (p_width < 1.0f) {
border_size *= p_width;
}
Color color2 = Color(1, 1, 1, 0);
Item::CommandPolygon *pline_left = canvas_item->alloc_command<Item::CommandPolygon>();
ERR_FAIL_NULL(pline_left);
Item::CommandPolygon *pline_right = canvas_item->alloc_command<Item::CommandPolygon>();
ERR_FAIL_NULL(pline_right);
PackedColorArray colors_left;
PackedVector2Array points_left;
PackedColorArray colors_right;
PackedVector2Array points_right;
// 2+2 additional vertices for begin+end corners.
// 1 additional vertex to swap the orientation of the triangles within the end corner's quad.
colors_left.resize(polyline_point_count + (loop ? 0 : 5));
points_left.resize(polyline_point_count + (loop ? 0 : 5));
colors_right.resize(polyline_point_count + (loop ? 0 : 5));
points_right.resize(polyline_point_count + (loop ? 0 : 5));
Color *colors_left_ptr = colors_left.ptrw();
Vector2 *points_left_ptr = points_left.ptrw();
Vector2 *points_right_ptr = points_right.ptrw();
Color *colors_right_ptr = colors_right.ptrw();
Vector2 prev_segment_dir;
for (int i = 0; i < point_count; i++) {
bool is_first_point = (i == 0);
bool is_last_point = (i == point_count - 1);
Vector2 segment_dir = compute_polyline_segment_dir(p_points, i, prev_segment_dir);
if (is_first_point && loop) {
prev_segment_dir = last_segment_dir;
} else if (is_last_point && loop) {
prev_segment_dir = first_segment_dir;
}
Vector2 base_edge_offset;
if (is_first_point && !loop) {
base_edge_offset = first_segment_dir.orthogonal();
} else if (is_last_point && !loop) {
base_edge_offset = last_segment_dir.orthogonal();
} else {
base_edge_offset = compute_polyline_edge_offset_clamped(segment_dir, prev_segment_dir);
}
Vector2 edge_offset = base_edge_offset * (p_width * 0.5f);
Vector2 border = base_edge_offset * border_size;
Vector2 pos = p_points[i];
int j = i * 2 + (loop ? 0 : 2);
points_ptr[j + 0] = pos + edge_offset;
points_ptr[j + 1] = pos - edge_offset;
points_left_ptr[j + 0] = pos + edge_offset;
points_left_ptr[j + 1] = pos + edge_offset + border;
points_right_ptr[j + 0] = pos - edge_offset;
points_right_ptr[j + 1] = pos - edge_offset - border;
if (i < p_colors.size()) {
color = p_colors[i];
color2 = Color(color.r, color.g, color.b, 0);
}
colors_ptr[j + 0] = color;
colors_ptr[j + 1] = color;
colors_left_ptr[j + 0] = color;
colors_left_ptr[j + 1] = color2;
colors_right_ptr[j + 0] = color;
colors_right_ptr[j + 1] = color2;
if (is_first_point && !loop) {
Vector2 begin_border = -segment_dir * border_size;
points_ptr[0] = pos + edge_offset + begin_border;
points_ptr[1] = pos - edge_offset + begin_border;
colors_ptr[0] = color2;
colors_ptr[1] = color2;
points_left_ptr[0] = pos + edge_offset + begin_border;
points_left_ptr[1] = pos + edge_offset + begin_border + border;
colors_left_ptr[0] = color2;
colors_left_ptr[1] = color2;
points_right_ptr[0] = pos - edge_offset + begin_border;
points_right_ptr[1] = pos - edge_offset + begin_border - border;
colors_right_ptr[0] = color2;
colors_right_ptr[1] = color2;
}
if (is_last_point && !loop) {