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Extract canvas stroke runtime and preview draw shells

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omigamedev
2026-06-16 20:22:01 +02:00
parent d6a7512b94
commit a05afb24f3
11 changed files with 1159 additions and 971 deletions
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src/legacy_node_canvas_draw_services.cpp Normal file
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#include "pch.h"
#include "legacy_node_canvas_draw_services.h"
#include <algorithm>
#include <array>
#include <cstdint>
#include <memory>
#include <vector>
#include "app.h"
#include "legacy_canvas_draw_merge_services.h"
#include "legacy_preference_storage.h"
#include "legacy_ui_gl_dispatch.h"
#include "legacy_ui_overlay_services.h"
#include "log.h"
#include "node_panel_grid.h"
#include "node_image_texture.h"
#include "paint_renderer/compositor.h"
#include "renderer_gl/opengl_capabilities.h"
#include "util.h"
namespace {
void set_active_texture_unit(std::uint32_t unit_index)
{
pp::legacy::ui_gl::activate_texture_unit(unit_index, "NodeCanvas");
}
void unbind_texture_2d()
{
pp::legacy::ui_gl::unbind_texture_2d("NodeCanvas");
}
void apply_node_canvas_viewport(std::int32_t x, std::int32_t y, std::int32_t width, std::int32_t height)
{
pp::legacy::ui_gl::apply_viewport(x, y, width, height, "NodeCanvas");
}
pp::renderer::gl::OpenGlViewportRect query_node_canvas_viewport()
{
return pp::legacy::ui_gl::query_viewport_rect("NodeCanvas");
}
std::array<float, 4> query_node_canvas_clear_color()
{
return pp::legacy::ui_gl::query_clear_color("NodeCanvas");
}
void apply_node_canvas_clear_color(std::array<float, 4> color)
{
pp::legacy::ui_gl::set_clear_color(color, "NodeCanvas");
}
void clear_node_canvas_color_buffer(std::array<float, 4> color)
{
pp::legacy::ui_gl::clear_color_buffer(color, "NodeCanvas");
}
void apply_node_canvas_capability(std::uint32_t state, bool enabled)
{
pp::legacy::ui_gl::set_capability(state, enabled, "NodeCanvas");
}
bool query_node_canvas_capability(std::uint32_t state)
{
return pp::legacy::ui_gl::query_capability(state, "NodeCanvas");
}
pp::renderer::RenderDeviceFeatures node_canvas_stroke_composite_features() noexcept
{
return ShaderManager::render_device_features();
}
pp::paint_renderer::CanvasBlendGatePlan node_canvas_blend_gate_plan(
int width,
int height,
const std::vector<std::shared_ptr<Layer>>& layers,
const Brush* brush) noexcept
{
std::vector<int> layer_blend_modes;
layer_blend_modes.reserve(layers.size());
for (const auto& layer : layers) {
if (!layer) {
continue;
}
layer_blend_modes.push_back(layer->m_blend_mode);
}
const auto plan = pp::paint_renderer::plan_canvas_blend_gate(
node_canvas_stroke_composite_features(),
pp::paint_renderer::CanvasBlendGateRequest {
.extent = pp::renderer::Extent2D {
.width = static_cast<std::uint32_t>(std::max(width, 0)),
.height = static_cast<std::uint32_t>(std::max(height, 0)),
},
.layer_blend_modes = layer_blend_modes,
.has_stroke_blend_mode = brush != nullptr,
.stroke_blend_mode = brush ? brush->m_blend_mode : 0,
});
if (plan) {
return plan.value();
}
pp::paint_renderer::CanvasBlendGatePlan fallback;
fallback.shader_blend = true;
fallback.complex_blend = true;
fallback.compatibility_fallback = true;
return fallback;
}
pp::panopainter::LegacyCanvasDrawMergeLayerPathExecution make_node_canvas_layer_path_execution(
NodeCanvas& node_canvas,
size_t layer_index,
int plane_index,
const glm::mat4& plane_mvp_z,
const Brush* brush,
bool copy_blend_destination,
bool use_nearest_sampler)
{
auto* layer = node_canvas.m_canvas->m_layers[layer_index].get();
const auto plane_mvp = plane_mvp_z;
const auto brush_ptr = brush;
const auto smask_active = node_canvas.m_canvas->m_smask_active;
auto draw_layer_frame = pp::panopainter::make_legacy_canvas_draw_merge_layer_frame_draw(
layer,
&node_canvas.m_face_plane,
set_active_texture_unit,
plane_index,
layer->m_opacity);
glm::vec2 patt_scale = glm::vec2(brush_ptr->m_pattern_scale);
if (brush_ptr->m_pattern_flipx)
patt_scale.x *= -1.f;
if (brush_ptr->m_pattern_flipy)
patt_scale.y *= -1.f;
return pp::panopainter::make_legacy_canvas_draw_merge_layer_path_gl_execution(
{
.temporary_erase = {
.mvp = plane_mvp,
.texture_slot = 0,
.stroke_texture_slot = 1,
.mask_texture_slot = 2,
.mask_enabled = smask_active,
},
.temporary_paint = {
.resolution = Canvas::I->m_size,
.pattern = {
.scale = patt_scale,
.invert = static_cast<float>(brush_ptr->m_pattern_invert),
.brightness = brush_ptr->m_pattern_brightness,
.contrast = brush_ptr->m_pattern_contrast,
.depth = brush_ptr->m_pattern_depth,
.blend_mode = brush_ptr->m_pattern_blend_mode,
.offset = Canvas::I->m_pattern_offset,
},
.mvp = plane_mvp,
.layer_alpha = 1.0f,
.alpha_lock = layer->m_alpha_locked,
.mask_enabled = smask_active,
.use_fragcoord = false,
.blend_mode = brush_ptr->m_blend_mode,
.use_dual = brush_ptr->m_dual_enabled,
.dual_blend_mode = brush_ptr->m_dual_blend_mode,
.dual_alpha = brush_ptr->m_dual_opacity,
.use_pattern = brush_ptr->m_pattern_enabled && !brush_ptr->m_pattern_eachsample,
},
.layer_texture = {
.mvp = plane_mvp,
.texture_slot = 0,
.alpha = 1.f,
.highlight = layer->m_hightlight,
},
.blend = {
.shader = {
.mvp = glm::ortho(-1, 1, -1, 1),
.texture_slot = 0,
.destination_texture_slot = 2,
.use_destination_texture = copy_blend_destination,
.blend_mode = layer->m_blend_mode,
.alpha = 1.f,
},
.copy_destination = copy_blend_destination,
},
.use_nearest_sampler = use_nearest_sampler,
.use_dual_texture = brush_ptr->m_dual_enabled,
},
[&node_canvas] {
node_canvas.m_blender_rtt.bindFramebuffer();
},
[&node_canvas] {
node_canvas.m_blender_rtt.clear();
},
[&node_canvas] {
node_canvas.m_blender_rtt.unbindFramebuffer();
},
[&node_canvas](int unit) {
node_canvas.m_sampler.bind(unit);
},
[&node_canvas](int unit) {
node_canvas.m_sampler_nearest.bind(unit);
},
[&node_canvas](int unit) {
node_canvas.m_sampler_stencil.bind(unit);
},
[](int unit) {
set_active_texture_unit(unit);
},
[&node_canvas, plane_index] {
node_canvas.m_canvas->m_tmp[plane_index].bindTexture();
},
[&node_canvas, plane_index] {
node_canvas.m_canvas->m_tmp[plane_index].unbindTexture();
},
[&node_canvas, plane_index] {
node_canvas.m_canvas->m_smask.rtt(plane_index).bindTexture();
},
[&node_canvas, plane_index] {
node_canvas.m_canvas->m_smask.rtt(plane_index).unbindTexture();
},
[&node_canvas, plane_index] {
node_canvas.m_canvas->m_tmp_dual[plane_index].bindTexture();
},
[&node_canvas, plane_index] {
node_canvas.m_canvas->m_tmp_dual[plane_index].unbindTexture();
},
[brush_ptr] {
brush_ptr->m_pattern_texture ? brush_ptr->m_pattern_texture->bind() : unbind_texture_2d();
},
[&node_canvas] {
node_canvas.m_face_plane.draw_fill();
},
[&node_canvas] {
node_canvas.m_blender_rtt.bindTexture();
},
[&node_canvas] {
node_canvas.m_blender_rtt.unbindTexture();
},
[&node_canvas] {
node_canvas.m_blender_bg.bind();
},
[&node_canvas] {
node_canvas.m_blender_bg.unbind();
},
[&node_canvas] {
copy_framebuffer_to_texture_2d(
0,
0,
0,
0,
node_canvas.m_blender_bg.size().x,
node_canvas.m_blender_bg.size().y);
},
#ifdef _DEBUG
[&node_canvas, layer_index, plane_index, plane_mvp] {
auto bb = node_canvas.m_canvas->m_layers[layer_index]->box(plane_index) / (float)node_canvas.m_canvas->m_layers[layer_index]->w;
glm::vec2 bbmin = xy(bb);
glm::vec2 bbsz = zw(bb) - xy(bb);
pp::panopainter::configure_legacy_ui_color_shader(
plane_mvp
* glm::translate(glm::vec3(bbmin * 2.f, 0))
* glm::translate(glm::vec3(-1, -1, 0))
* glm::scale(glm::vec3(bbsz, 1))
* glm::translate(glm::vec3(1, 1, 0)),
{ 1, 0, 0, 1 });
node_canvas.m_face_plane.draw_stroke();
},
#else
[] {
},
#endif
draw_layer_frame);
}
void execute_node_canvas_draw_unmerged_pass(
NodeCanvas& node_canvas,
const glm::mat4& proj,
const glm::mat4& camera,
const glm::ivec4& c,
float yaw,
float pitch,
float roll)
{
const auto blend_gate = node_canvas_blend_gate_plan(
node_canvas.m_cache_rtt.getWidth(),
node_canvas.m_cache_rtt.getHeight(),
node_canvas.m_canvas->m_layers,
node_canvas.m_canvas->m_current_stroke ? node_canvas.m_canvas->m_current_stroke->m_brush.get() : nullptr);
const bool use_blend = blend_gate.shader_blend;
const bool copy_blend_destination = use_blend && !blend_gate.reads_destination_color;
const auto layer_orientation = glm::eulerAngleYXZ(yaw, pitch, roll);
pp::panopainter::execute_legacy_canvas_draw_node_canvas_unmerged_pass(
node_canvas,
use_blend,
copy_blend_destination,
proj,
camera,
layer_orientation,
c,
[&](int x, int y, int width, int height) {
apply_node_canvas_viewport(x, y, width, height);
},
[&](auto state, bool enabled) {
apply_node_canvas_capability(state, enabled);
},
[&] {
node_canvas.m_sampler.bind(0);
set_active_texture_unit(0);
},
[&](size_t layer_index, int plane_index, const glm::mat4& plane_mvp_z, const Brush* brush, bool copy_blend_destination, bool use_nearest_sampler) {
return make_node_canvas_layer_path_execution(
node_canvas,
layer_index,
plane_index,
plane_mvp_z,
brush,
copy_blend_destination,
use_nearest_sampler);
},
[&](const char* message) {
LOG("NodeCanvas onion frame range failed: %s", message);
});
}
void execute_node_canvas_draw_merged_pass(
NodeCanvas& node_canvas,
const glm::mat4& proj,
const glm::mat4& camera)
{
pp::panopainter::execute_legacy_canvas_draw_merged_pass(
node_canvas,
proj,
camera,
[&](auto state, bool enabled) {
apply_node_canvas_capability(state, enabled);
},
[](int unit) {
set_active_texture_unit(unit);
},
[&] {
node_canvas.m_face_plane.draw_fill();
});
}
void execute_node_canvas_draw_merge_tail(
NodeCanvas& node_canvas,
const glm::mat4& ortho_proj,
const glm::mat4& proj,
const glm::mat4& camera,
const glm::ivec4& c)
{
apply_node_canvas_capability(pp::renderer::gl::depth_test_state(), false);
pp::panopainter::execute_legacy_canvas_draw_merge_post_draw_callbacks(
node_canvas.m_canvas->m_smask_active,
node_canvas.m_canvas->m_current_mode == kCanvasMode::Copy || node_canvas.m_canvas->m_current_mode == kCanvasMode::Cut,
node_canvas.m_canvas->m_smask_mode,
node_canvas.m_canvas->m_current_mode != kCanvasMode::Grid,
[&] {
node_canvas.m_canvas->modes[(int)kCanvasMode::MaskFree][0]->on_Draw(ortho_proj, proj, camera);
},
[&] {
node_canvas.m_canvas->modes[(int)kCanvasMode::MaskLine][0]->on_Draw(ortho_proj, proj, camera);
},
[&] {
pp::panopainter::execute_legacy_canvas_draw_merge_smask_faces(
pp::panopainter::LegacyCanvasDrawMergeTextureMaskUniforms {
.texture_slot = 0,
.pattern_offset = node_canvas.m_outline_pan,
},
proj,
camera,
node_canvas.m_canvas->m_layers.size() + 500.f,
std::to_array(node_canvas.m_canvas->m_plane_transform),
{
.set_active_texture_unit = [&] {
set_active_texture_unit(0);
},
.enable_blend = [&] {
apply_node_canvas_capability(pp::renderer::gl::blend_state(), true);
},
.bind_face_texture = [&](int plane_index) {
node_canvas.m_canvas->m_smask.rtt(plane_index).bindTexture();
},
.draw_face = [&] {
node_canvas.m_face_plane.draw_fill();
},
.unbind_face_texture = [&](int plane_index) {
node_canvas.m_canvas->m_smask.rtt(plane_index).unbindTexture();
},
});
},
pp::panopainter::make_legacy_canvas_draw_merge_grid_modes_draw(
&Canvas::modes[(int)kCanvasMode::Grid],
ortho_proj,
proj,
camera),
pp::panopainter::make_legacy_canvas_draw_merge_heightmap_draw(App::I->grid.get(), proj, camera),
pp::panopainter::make_legacy_canvas_draw_merge_current_modes_draw(
node_canvas.m_canvas->m_mode,
ortho_proj,
proj,
camera));
if (node_canvas.m_density != 1.f) {
pp::panopainter::execute_legacy_canvas_draw_merge_display_resolve(
pp::panopainter::LegacyCanvasDrawMergeDisplayResolveUniforms {
.texture = {
.mvp = glm::ortho<float>(-1, 1, -1, 1),
.texture_slot = 0,
},
},
{
.unbind_resolve_framebuffer = [&] {
node_canvas.m_rtt.unbindFramebuffer();
},
.clear_color_buffer = [&] {
clear_node_canvas_color_buffer({ 1.f, 1.f, 1.f, 0.f });
},
.apply_viewport = [&] {
apply_node_canvas_viewport(c.x + App::I->off_x, c.y + App::I->off_y, c.z, c.w);
},
.bind_sampler = [&] {
node_canvas.m_sampler_nearest.bind(0);
},
.bind_resolve_texture = [&] {
set_active_texture_unit(0);
node_canvas.m_rtt.bindTexture();
},
.draw = [&] {
node_canvas.m_face_plane.draw_fill();
},
.unbind_resolve_texture = [&] {
node_canvas.m_rtt.unbindTexture();
},
});
}
}
} // namespace
namespace pp::panopainter {
void init_legacy_node_canvas_shell(NodeCanvas& node_canvas)
{
const auto preferences = read_legacy_canvas_preferences();
node_canvas.m_density = preferences.viewport_density;
node_canvas.m_cursor_visibility = (NodeCanvas::kCursorVisibility)preferences.cursor_mode;
node_canvas.m_mouse_ignore = false;
node_canvas.m_canvas = std::make_unique<Canvas>();
const int canvas_resolution = App::I->default_canvas_resolution();
node_canvas.m_canvas->create(canvas_resolution, canvas_resolution);
node_canvas.m_canvas->m_unsaved = false;
node_canvas.m_canvas->m_node = &node_canvas;
node_canvas.m_sampler.create();
//node_canvas.m_sampler.set_filter(pp::renderer::gl::linear_texture_filter(), pp::renderer::gl::nearest_texture_filter());
node_canvas.m_sampler_nearest.create(pp::renderer::gl::nearest_texture_filter());
node_canvas.m_sampler_linear.create(pp::renderer::gl::linear_texture_filter());
node_canvas.m_sampler_stencil.create(
pp::renderer::gl::linear_texture_filter(),
pp::renderer::gl::repeat_texture_wrap());
node_canvas.m_face_plane.create<1>(2, 2);
node_canvas.m_line.create();
CanvasMode::node = &node_canvas;
for (int i = 0; i < (int)kCanvasMode::COUNT; i++)
for (auto m : Canvas::modes[i])
m->init();
node_canvas.m_grid.create(1, 1, node_canvas.m_grid_divs);
}
void draw_legacy_node_canvas_shell(NodeCanvas& node_canvas)
{
// sanity checks
float zoom = node_canvas.root()->m_zoom;
if (zoom == 0.f)
zoom = 1.f;
auto box = node_canvas.m_clip * zoom;
if (box.z == 0 || box.w == 0)
return;
const auto vp = query_node_canvas_viewport();
const auto cc = query_node_canvas_clear_color();
const auto blend = query_node_canvas_capability(pp::renderer::gl::blend_state());
const auto depth = query_node_canvas_capability(pp::renderer::gl::depth_test_state());
const auto scissor = query_node_canvas_capability(pp::renderer::gl::scissor_test_state());
apply_node_canvas_capability(pp::renderer::gl::scissor_test_state(), false);
glm::ivec4 c = (glm::ivec4)glm::vec4(box.x, (int)(vp.height - box.y - box.w), box.z, box.w);
//m_canvas->m_cam_rot = m_pan * 0.003f;
glm::mat4 ortho_proj = glm::ortho(0.f, box.z, 0.f, box.w, -1000.f, 1000.f);
glm::mat4 proj = glm::perspective(glm::radians(node_canvas.m_canvas->m_cam_fov), box.z / box.w, 0.001f, 1000.f);
glm::mat4 camera = glm::translate(node_canvas.m_canvas->m_cam_pos) * node_canvas.m_canvas->m_cam_rot;
float pitch = 0;
if (auto slider = node_canvas.root()->find<NodeSliderH>("pitch-slider"))
pitch = (slider->get_value() - 0.5) * glm::half_pi<float>();
float yaw = 0;
if (auto slider = node_canvas.root()->find<NodeSliderH>("yaw-slider"))
yaw = (slider->get_value() - 0.5) * glm::half_pi<float>();
float roll = 0;
if (auto slider = node_canvas.root()->find<NodeSliderH>("roll-slider"))
roll = (slider->get_value() - 0.5) * glm::half_pi<float>();
prepare_legacy_node_canvas_draw_setup(node_canvas, box, c, proj, camera);
// NOTE: draw_merge has been disabled for worst performance
bool draw_merged = !(node_canvas.m_canvas->m_current_mode == kCanvasMode::Camera);
draw_merged = false;
execute_legacy_canvas_draw_node_canvas_shell(
node_canvas.m_density != 1.f,
draw_merged,
[&] {
node_canvas.m_rtt.bindFramebuffer();
clear_node_canvas_color_buffer({ 1.f, 1.f, 0.f, 0.f });
apply_node_canvas_viewport(0, 0, node_canvas.m_rtt.getWidth(), node_canvas.m_rtt.getHeight());
},
[&] {
clear_node_canvas_color_buffer({ 1.f, 1.f, 1.f, 0.f });
apply_node_canvas_viewport(c.x + App::I->off_x, c.y + App::I->off_y, c.z, c.w);
},
[&] {
execute_node_canvas_draw_merged_pass(node_canvas, proj, camera);
},
[&] {
execute_node_canvas_draw_unmerged_pass(node_canvas, proj, camera, c, yaw, pitch, roll);
});
execute_node_canvas_draw_merge_tail(node_canvas, ortho_proj, proj, camera, c);
scissor ? apply_node_canvas_capability(pp::renderer::gl::scissor_test_state(), true) : apply_node_canvas_capability(pp::renderer::gl::scissor_test_state(), false);
blend ? apply_node_canvas_capability(pp::renderer::gl::blend_state(), true) : apply_node_canvas_capability(pp::renderer::gl::blend_state(), false);
depth ? apply_node_canvas_capability(pp::renderer::gl::depth_test_state(), true) : apply_node_canvas_capability(pp::renderer::gl::depth_test_state(), false);
apply_node_canvas_viewport(vp.x, vp.y, vp.width, vp.height);
apply_node_canvas_clear_color(cc);
}
} // namespace pp::panopainter