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Use a 2-pass depth based outline algorithm when selected

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This commit is contained in:
Noisyfox 2024-08-18 19:30:40 +08:00
parent 2acd858bf3
commit 13e18d1d65
7 changed files with 262 additions and 46 deletions
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97
src/slic3r/GUI/3DScene.cpp
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@ -423,7 +423,7 @@ void GLVolume::render()
}
//BBS: add outline related logic
void GLVolume::render_with_outline(const Transform3d &view_model_matrix)
void GLVolume::render_with_outline(const GUI::Size& cnv_size)
{
if (!is_active)
return;
@ -435,37 +435,80 @@ void GLVolume::render_with_outline(const Transform3d &view_model_matrix)
ModelObjectPtrs &model_objects = GUI::wxGetApp().model().objects;
std::vector<ColorRGBA> colors = get_extruders_colors();
glEnable(GL_STENCIL_TEST);
glStencilMask(0xFF);
glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE);
glClear(GL_STENCIL_BUFFER_BIT);
glStencilFunc(GL_ALWAYS, 0xff, 0xFF);
const GUI::OpenGLManager::EFramebufferType framebuffers_type = GUI::OpenGLManager::get_framebuffers_type();
if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Unknown) {
// No supported, degrade to normal rendering
simple_render(shader, model_objects, colors);
return;
}
simple_render(shader, model_objects, colors);
// 1st. render pass, render the model into a separate render target that has only depth buffer
GLuint depth_fbo = 0;
GLuint depth_tex = 0;
if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Arb) {
glsafe(::glGenFramebuffers(1, &depth_fbo));
glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, depth_fbo));
// 2nd. render pass: now draw slightly scaled versions of the objects, this time disabling stencil writing.
// Because the stencil buffer is now filled with several 1s. The parts of the buffer that are 1 are not drawn, thus only drawing
// the objects' size differences, making it look like borders.
glStencilFunc(GL_NOTEQUAL, 0xff, 0xFF);
glStencilMask(0x00);
float scale = 1.02f;
ColorRGBA body_color = { 1.0f, 1.0f, 1.0f, 1.0f }; //red
glActiveTexture(GL_TEXTURE0);
glsafe(::glGenTextures(1, &depth_tex));
glsafe(::glBindTexture(GL_TEXTURE_2D, depth_tex));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, cnv_size.get_width(), cnv_size.get_height(), 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr));
model.set_color(body_color);
shader->set_uniform("is_outline", true);
glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depth_tex, 0));
} else {
glsafe(::glGenFramebuffersEXT(1, &depth_fbo));
glsafe(::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, depth_fbo));
Transform3d matrix = view_model_matrix;
matrix.scale(scale);
shader->set_uniform("view_model_matrix", matrix);
glActiveTexture(GL_TEXTURE0);
glsafe(::glGenTextures(1, &depth_tex));
glsafe(::glBindTexture(GL_TEXTURE_2D, depth_tex));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32F, cnv_size.get_width(), cnv_size.get_height(), 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr));
glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, depth_tex, 0));
}
glsafe(::glClear(GL_DEPTH_BUFFER_BIT));
if (tverts_range == std::make_pair<size_t, size_t>(0, -1))
model.render();
else
model.render(this->tverts_range);
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
shader->set_uniform("view_model_matrix", view_model_matrix);
// 2nd. render pass, just a normal render with the depth buffer passed as a texture
if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Arb) {
glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, 0));
} else if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Ext) {
glsafe(::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
}
shader->set_uniform("is_outline", true);
shader->set_uniform("screen_size", Vec2f{cnv_size.get_width(), cnv_size.get_height()});
glActiveTexture(GL_TEXTURE0);
glsafe(::glBindTexture(GL_TEXTURE_2D, depth_tex));
shader->set_uniform("depth_tex", 0);
simple_render(shader, model_objects, colors);
// Some clean up to do
glsafe(::glBindTexture(GL_TEXTURE_2D, 0));
shader->set_uniform("screen_size", 0);
shader->set_uniform("is_outline", false);
glDisable(GL_STENCIL_TEST);
if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Arb) {
glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, 0));
if (depth_fbo != 0)
glsafe(::glDeleteFramebuffers(1, &depth_fbo));
} else if (framebuffers_type == GUI::OpenGLManager::EFramebufferType::Ext) {
glsafe(::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
if (depth_fbo != 0)
glsafe(::glDeleteFramebuffersEXT(1, &depth_fbo));
}
if (depth_tex != 0)
glsafe(::glDeleteTextures(1, &depth_tex));
}
//BBS add render for simple case
@ -847,8 +890,8 @@ int GLVolumeCollection::get_selection_support_threshold_angle(bool &enable_suppo
}
//BBS: add outline drawing logic
void GLVolumeCollection::render(GLVolumeCollection::ERenderType type, bool disable_cullface, const Transform3d& view_matrix, const Transform3d& projection_matrix,
std::function<bool(const GLVolume&)> filter_func, bool with_outline) const
void GLVolumeCollection::render(GLVolumeCollection::ERenderType type, bool disable_cullface, const Transform3d& view_matrix, const Transform3d& projection_matrix, const GUI::Size& cnv_size,
std::function<bool(const GLVolume&)> filter_func) const
{
GLVolumeWithIdAndZList to_render = volumes_to_render(volumes, type, view_matrix, filter_func);
if (to_render.empty())
@ -953,9 +996,9 @@ void GLVolumeCollection::render(GLVolumeCollection::ERenderType type, bool disab
const Matrix3d view_normal_matrix = view_matrix.matrix().block(0, 0, 3, 3) * model_matrix.matrix().block(0, 0, 3, 3).inverse().transpose();
shader->set_uniform("view_normal_matrix", view_normal_matrix);
//BBS: add outline related logic
//if (with_outline && volume.first->selected)
// volume.first->render_with_outline(view_matrix * model_matrix);
//else
if (volume.first->selected)
volume.first->render_with_outline(cnv_size);
else
volume.first->render();
#if ENABLE_ENVIRONMENT_MAP