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Plan stroke preview composite sequence

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This commit is contained in:
omigamedev
2026-06-13 04:40:54 +02:00
parent 36861cbf97
commit c810cc178b
7 changed files with 348 additions and 64 deletions
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164
src/node_stroke_preview.cpp
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@@ -8,6 +8,7 @@
#include "app.h"
#include "legacy_canvas_stroke_composite_services.h"
#include "legacy_canvas_stroke_execution_services.h"
#include "legacy_canvas_stroke_preview_services.h"
#include "legacy_canvas_stroke_shader_services.h"
#include "legacy_canvas_stroke_services.h"
#include "legacy_ui_gl_dispatch.h"
@@ -451,6 +452,12 @@ void NodeStrokePreview::draw_stroke_immediate()
const auto stroke_feedback = stroke_preview_destination_feedback_plan(m_rtt.getWidth(), m_rtt.getHeight());
const bool copy_stroke_destination = !stroke_feedback.reads_destination_color;
const auto material = stroke_preview_material_plan(*b, copy_stroke_destination);
const auto preview_composite_plan = pp::paint_renderer::plan_stroke_preview_composite(
pp::paint_renderer::StrokePreviewCompositeRequest {
.uses_mixer = b->m_tip_mix > 0.0f,
.uses_dual = material.composite_pass.use_dual,
.uses_pattern = material.composite_pass.use_pattern,
});
pp::panopainter::setup_legacy_stroke_shader(
pp::panopainter::LegacyStrokeShaderSetupUniforms {
.resolution = size,
@@ -508,21 +515,34 @@ void NodeStrokePreview::draw_stroke_immediate()
// CHEKCERBOARD
// copy background color to tex2
ShaderManager::use(kShader::Checkerboard);
ShaderManager::u_int(kShaderUniform::Colorize, b->m_tip_mix > 0.f || b->m_blend_mode != 0);
float aspect = size.x / size.y;
ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f / aspect, .5f / aspect, -1.f, 1.f));
m_plane.draw_fill();
//m_rtt.clear({ .3f, .3f, .3f, 1.f });
m_tex_background.bind();
copy_framebuffer_to_texture_2d(
0,
0,
0,
0,
static_cast<int>(size.x),
static_cast<int>(size.y));
pp::panopainter::execute_legacy_stroke_preview_background_capture(
[&] {
// copy background color to tex2
ShaderManager::use(kShader::Checkerboard);
ShaderManager::u_int(kShaderUniform::Colorize, b->m_tip_mix > 0.f || b->m_blend_mode != 0);
float aspect = size.x / size.y;
ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f / aspect, .5f / aspect, -1.f, 1.f));
},
[&] {
m_plane.draw_fill();
},
[&] {
//m_rtt.clear({ .3f, .3f, .3f, 1.f });
m_tex_background.bind();
},
[](
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height) {
copy_framebuffer_to_texture_2d(src_x, src_y, dst_x, dst_y, width, height);
},
pp::panopainter::LegacyStrokePreviewCopySize {
.width = static_cast<int>(size.x),
.height = static_cast<int>(size.y),
});
// DRAW MAIN BRUSH
@@ -545,7 +565,7 @@ void NodeStrokePreview::draw_stroke_immediate()
b->m_pattern_texture->bind() :
unbind_texture_2d();
set_active_texture_unit(3U);
b->m_tip_mix > 0.f ? m_rtt_mixer.bindTexture() : unbind_texture_2d();
preview_composite_plan.uses_mixer ? m_rtt_mixer.bindTexture() : unbind_texture_2d();
auto frames = stroke_draw_compute(m_stroke, zoom);
m_rtt.clear();
for (auto& f : frames)
@@ -582,57 +602,73 @@ void NodeStrokePreview::draw_stroke_immediate()
// COMPOSITE
pp::panopainter::setup_legacy_stroke_composite_shader(
pp::panopainter::LegacyStrokeCompositeUniforms {
.resolution = size,
.pattern = {
.scale = patt_scale,
.invert = static_cast<float>(b->m_pattern_invert),
.brightness = b->m_pattern_brightness,
.contrast = b->m_pattern_contrast,
.depth = b->m_pattern_depth,
.blend_mode = material.composite_pass.pattern_blend_mode,
.offset = glm::vec2(b->m_pattern_rand_offset ? 0.5f : 0.0f),
},
.mvp = glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f),
.layer_alpha = 1.0f,
.alpha_lock = false,
.mask_enabled = false,
.use_fragcoord = false,
.blend_mode = b->m_blend_mode,
.use_dual = material.composite_pass.use_dual,
.dual_blend_mode = material.composite_pass.dual_blend_mode,
.dual_alpha = material.composite_pass.dual_alpha,
.use_pattern = material.composite_pass.use_pattern,
pp::panopainter::execute_legacy_stroke_preview_final_composite(
[&] {
pp::panopainter::setup_legacy_stroke_composite_shader(
pp::panopainter::LegacyStrokeCompositeUniforms {
.resolution = size,
.pattern = {
.scale = patt_scale,
.invert = static_cast<float>(b->m_pattern_invert),
.brightness = b->m_pattern_brightness,
.contrast = b->m_pattern_contrast,
.depth = b->m_pattern_depth,
.blend_mode = material.composite_pass.pattern_blend_mode,
.offset = glm::vec2(b->m_pattern_rand_offset ? 0.5f : 0.0f),
},
.mvp = glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f),
.layer_alpha = 1.0f,
.alpha_lock = false,
.mask_enabled = false,
.use_fragcoord = false,
.blend_mode = b->m_blend_mode,
.use_dual = material.composite_pass.use_dual,
.dual_blend_mode = material.composite_pass.dual_blend_mode,
.dual_alpha = material.composite_pass.dual_alpha,
.use_pattern = material.composite_pass.use_pattern,
});
},
[&] {
m_sampler_linear.bind(0);
m_sampler_linear.bind(1);
m_sampler_linear.bind(2);
m_sampler_linear.bind(3);
m_sampler_linear_repeat.bind(4);
},
[&] {
set_active_texture_unit(0U);
m_tex_background.bind();
set_active_texture_unit(1U);
m_tex.bind();
set_active_texture_unit(3U);
m_tex_dual.bind();
set_active_texture_unit(4U);
b->m_pattern_texture ?
b->m_pattern_texture->bind() :
unbind_texture_2d();
},
[&] {
m_plane.draw_fill();
});
m_sampler_linear.bind(0);
m_sampler_linear.bind(1);
m_sampler_linear.bind(2);
m_sampler_linear.bind(3);
m_sampler_linear_repeat.bind(4);
set_active_texture_unit(0U);
m_tex_background.bind();
set_active_texture_unit(1U);
m_tex.bind();
set_active_texture_unit(3U);
m_tex_dual.bind();
set_active_texture_unit(4U);
b->m_pattern_texture ?
b->m_pattern_texture->bind() :
unbind_texture_2d();
m_plane.draw_fill();
// copy the result to the actual preview
m_tex_preview.bind();
copy_framebuffer_to_texture_2d(
0,
0,
0,
0,
static_cast<int>(size.x),
static_cast<int>(size.y));
pp::panopainter::copy_legacy_stroke_preview_texture(
[&] {
m_tex_preview.bind();
},
[](
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height) {
copy_framebuffer_to_texture_2d(src_x, src_y, dst_x, dst_y, width, height);
},
pp::panopainter::LegacyStrokePreviewCopySize {
.width = static_cast<int>(size.x),
.height = static_cast<int>(size.y),
});
m_rtt.unbindFramebuffer();