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Share retained stroke preview mix executor

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This commit is contained in:
omigamedev
2026-06-13 11:16:27 +02:00
parent f513500b3c
commit dc2d678dac
6 changed files with 250 additions and 59 deletions
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116
src/node_stroke_preview.cpp
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@@ -124,18 +124,6 @@ struct StrokePreviewCompositePassInputs {
std::function<void()> draw_composite;
};
struct StrokePreviewMixPassInputs {
glm::vec2 scissor_min;
glm::vec2 scissor_size;
RTT& mixer_rtt;
Texture2D& background_texture;
RTT& stroke_rtt;
Texture2D& dual_texture;
const Brush& brush;
Sampler& linear_sampler;
std::function<void()> draw_mix;
};
pp::panopainter::LegacyNodeStrokePreviewMixPassRequest make_stroke_preview_mix_pass_request(
const Brush& brush,
glm::vec2 resolution) noexcept
@@ -190,40 +178,6 @@ pp::panopainter::LegacyStrokeCompositeUniforms make_stroke_preview_mix_composite
};
}
void execute_stroke_preview_mix_pass(const StrokePreviewMixPassInputs& inputs)
{
gl_state gl;
gl.save();
inputs.mixer_rtt.bindFramebuffer();
apply_stroke_preview_viewport(0, 0, inputs.mixer_rtt.getWidth(), inputs.mixer_rtt.getHeight());
apply_stroke_preview_capability(pp::renderer::gl::depth_test_state(), false);
apply_stroke_preview_capability(pp::renderer::gl::scissor_test_state(), true);
apply_stroke_preview_capability(pp::renderer::gl::blend_state(), false);
apply_stroke_preview_scissor(
static_cast<int>(inputs.scissor_min.x),
static_cast<int>(inputs.scissor_min.y),
static_cast<int>(inputs.scissor_size.x),
static_cast<int>(inputs.scissor_size.y));
inputs.linear_sampler.bind(stroke_preview_composite_slots::kBackground);
set_active_texture_unit(stroke_preview_composite_slots::kBackground);
inputs.background_texture.bind();
set_active_texture_unit(stroke_preview_composite_slots::kStroke);
inputs.stroke_rtt.bindTexture();
set_active_texture_unit(stroke_preview_composite_slots::kDual);
inputs.dual_texture.bind();
set_active_texture_unit(stroke_preview_composite_slots::kPattern);
inputs.brush.m_pattern_texture ?
inputs.brush.m_pattern_texture->bind() :
unbind_texture_2d();
inputs.draw_mix();
inputs.mixer_rtt.unbindFramebuffer();
gl.restore();
}
void execute_stroke_preview_final_composite_pass(const StrokePreviewCompositePassInputs& inputs)
{
pp::panopainter::execute_legacy_stroke_preview_final_composite(
@@ -607,23 +561,67 @@ void NodeStrokePreview::stroke_draw_mix(const glm::vec2& bb_min, const glm::vec2
const auto& b = m_brush;
const auto mix_pass = pp::panopainter::plan_legacy_node_stroke_preview_mix_pass(
make_stroke_preview_mix_pass_request(*b, m_size));
pp::panopainter::setup_legacy_stroke_composite_shader(
make_stroke_preview_mix_composite_uniforms(mix_pass.shader));
execute_stroke_preview_mix_pass(
StrokePreviewMixPassInputs {
.scissor_min = bb_min,
.scissor_size = bb_sz,
.mixer_rtt = m_rtt_mixer,
.background_texture = m_tex_background,
.stroke_rtt = m_rtt,
.dual_texture = m_tex_dual,
.brush = *b,
.linear_sampler = m_sampler_linear,
gl_state gl;
[[maybe_unused]] const bool mix_ok = pp::panopainter::execute_legacy_node_stroke_preview_mix_pass(
pp::panopainter::LegacyNodeStrokePreviewMixExecutionRequest {
.shader = mix_pass.shader,
.mixer_width = m_rtt_mixer.getWidth(),
.mixer_height = m_rtt_mixer.getHeight(),
.scissor_x = static_cast<int>(bb_min.x),
.scissor_y = static_cast<int>(bb_min.y),
.scissor_width = static_cast<int>(bb_sz.x),
.scissor_height = static_cast<int>(bb_sz.y),
.save_state = [&] {
gl.save();
},
.setup_mix_shader = [&](const pp::panopainter::LegacyNodeStrokePreviewMixPassPlan::ShaderPlan& shader_plan) {
pp::panopainter::setup_legacy_stroke_composite_shader(
make_stroke_preview_mix_composite_uniforms(shader_plan));
},
.bind_mixer_framebuffer = [&] {
m_rtt_mixer.bindFramebuffer();
},
.configure_mix_target_state = [&](
int mixer_width,
int mixer_height,
int scissor_x,
int scissor_y,
int scissor_width,
int scissor_height) {
apply_stroke_preview_viewport(0, 0, mixer_width, mixer_height);
apply_stroke_preview_capability(pp::renderer::gl::depth_test_state(), false);
apply_stroke_preview_capability(pp::renderer::gl::scissor_test_state(), true);
apply_stroke_preview_capability(pp::renderer::gl::blend_state(), false);
apply_stroke_preview_scissor(
scissor_x,
scissor_y,
scissor_width,
scissor_height);
},
.bind_mix_inputs = [&] {
m_sampler_linear.bind(stroke_preview_composite_slots::kBackground);
set_active_texture_unit(stroke_preview_composite_slots::kBackground);
m_tex_background.bind();
set_active_texture_unit(stroke_preview_composite_slots::kStroke);
m_rtt.bindTexture();
set_active_texture_unit(stroke_preview_composite_slots::kDual);
m_tex_dual.bind();
set_active_texture_unit(stroke_preview_composite_slots::kPattern);
b->m_pattern_texture ?
b->m_pattern_texture->bind() :
unbind_texture_2d();
},
.draw_mix = [&] {
m_plane.draw_fill();
},
.unbind_mixer_framebuffer = [&] {
m_rtt_mixer.unbindFramebuffer();
},
.restore_state = [&] {
gl.restore();
},
});
assert(mix_ok);
}
glm::vec4 NodeStrokePreview::stroke_draw_samples(