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Share retained stroke sample and mix helpers

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This commit is contained in:
omigamedev
2026-06-13 10:46:58 +02:00
parent 2fadfdcd3e
commit 78790e9b52
6 changed files with 145 additions and 48 deletions
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91
src/node_stroke_preview.cpp
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@@ -124,6 +124,52 @@ 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;
};
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(
@@ -504,22 +550,6 @@ void NodeStrokePreview::clear_context()
void NodeStrokePreview::stroke_draw_mix(const glm::vec2& bb_min, const glm::vec2& bb_sz)
{
gl_state gl;
gl.save();
m_rtt_mixer.bindFramebuffer();
apply_stroke_preview_viewport(0, 0, m_rtt_mixer.getWidth(), m_rtt_mixer.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>(bb_min.x),
static_cast<int>(bb_min.y),
static_cast<int>(bb_sz.x),
static_cast<int>(bb_sz.y));
const auto& b = m_brush;
glm::vec2 patt_scale = glm::vec2(b->m_pattern_scale);
if (b->m_pattern_flipx) patt_scale.x *= -1.f;
@@ -550,21 +580,20 @@ void NodeStrokePreview::stroke_draw_mix(const glm::vec2& bb_min, const glm::vec2
.use_pattern = material.composite_pass.use_pattern,
});
m_sampler_linear.bind(0);
set_active_texture_unit(0U);
m_tex_background.bind();
set_active_texture_unit(1U);
m_rtt.bindTexture();
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_rtt_mixer.unbindFramebuffer();
gl.restore();
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,
.draw_mix = [&] {
m_plane.draw_fill();
},
});
}
glm::vec4 NodeStrokePreview::stroke_draw_samples(