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Tech ENABLE_RAYCAST_PICKING - Rendering for rectangle selection made only inside the rectangle, on systems supporting framebuffers

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This commit is contained in:
enricoturri1966 2022-06-29 12:14:41 +02:00
parent ae76468f7c
commit 39b1222b22
4 changed files with 294 additions and 0 deletions
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125
src/slic3r/GUI/Camera.cpp
View File

@ -91,6 +91,80 @@ void Camera::select_view(const std::string& direction)
look_at(m_target + m_distance * Vec3d::UnitY(), m_target, Vec3d::UnitZ());
}
#if ENABLE_RAYCAST_PICKING
double Camera::get_near_left() const
{
switch (m_type)
{
case EType::Perspective:
return m_frustrum_zs.first * (m_projection_matrix.matrix()(0, 2) - 1.0) / m_projection_matrix.matrix()(0, 0);
default:
case EType::Ortho:
return -1.0 / m_projection_matrix.matrix()(0, 0) - 0.5 * m_projection_matrix.matrix()(0, 0) * m_projection_matrix.matrix()(0, 3);
}
}
double Camera::get_near_right() const
{
switch (m_type)
{
case EType::Perspective:
return m_frustrum_zs.first * (m_projection_matrix.matrix()(0, 2) + 1.0) / m_projection_matrix.matrix()(0, 0);
default:
case EType::Ortho:
return 1.0 / m_projection_matrix.matrix()(0, 0) - 0.5 * m_projection_matrix.matrix()(0, 0) * m_projection_matrix.matrix()(0, 3);
}
}
double Camera::get_near_top() const
{
switch (m_type)
{
case EType::Perspective:
return m_frustrum_zs.first * (m_projection_matrix.matrix()(1, 2) + 1.0) / m_projection_matrix.matrix()(1, 1);
default:
case EType::Ortho:
return 1.0 / m_projection_matrix.matrix()(1, 1) - 0.5 * m_projection_matrix.matrix()(1, 1) * m_projection_matrix.matrix()(1, 3);
}
}
double Camera::get_near_bottom() const
{
switch (m_type)
{
case EType::Perspective:
return m_frustrum_zs.first * (m_projection_matrix.matrix()(1, 2) - 1.0) / m_projection_matrix.matrix()(1, 1);
default:
case EType::Ortho:
return -1.0 / m_projection_matrix.matrix()(1, 1) - 0.5 * m_projection_matrix.matrix()(1, 1) * m_projection_matrix.matrix()(1, 3);
}
}
double Camera::get_near_width() const
{
switch (m_type)
{
case EType::Perspective:
return 2.0 * m_frustrum_zs.first / m_projection_matrix.matrix()(0, 0);
default:
case EType::Ortho:
return 2.0 / m_projection_matrix.matrix()(0, 0);
}
}
double Camera::get_near_height() const
{
switch (m_type)
{
case EType::Perspective:
return 2.0 * m_frustrum_zs.first / m_projection_matrix.matrix()(1, 1);
default:
case EType::Ortho:
return 2.0 / m_projection_matrix.matrix()(1, 1);
}
}
#endif // ENABLE_RAYCAST_PICKING
double Camera::get_fov() const
{
switch (m_type)
@ -103,6 +177,21 @@ double Camera::get_fov() const
};
}
#if ENABLE_RAYCAST_PICKING
void Camera::set_viewport(int x, int y, unsigned int w, unsigned int h)
{
#if ENABLE_LEGACY_OPENGL_REMOVAL
m_viewport = { 0, 0, int(w), int(h) };
#else
glsafe(::glGetIntegerv(GL_VIEWPORT, m_viewport.data()));
#endif // ENABLE_LEGACY_OPENGL_REMOVAL
}
void Camera::apply_viewport() const
{
glsafe(::glViewport(m_viewport[0], m_viewport[1], m_viewport[2], m_viewport[3]));
}
#else
void Camera::apply_viewport(int x, int y, unsigned int w, unsigned int h)
{
glsafe(::glViewport(0, 0, w, h));
@ -112,6 +201,7 @@ void Camera::apply_viewport(int x, int y, unsigned int w, unsigned int h)
glsafe(::glGetIntegerv(GL_VIEWPORT, m_viewport.data()));
#endif // ENABLE_LEGACY_OPENGL_REMOVAL
}
#endif // ENABLE_RAYCAST_PICKING
#if !ENABLE_LEGACY_OPENGL_REMOVAL
void Camera::apply_view_matrix()
@ -170,6 +260,9 @@ void Camera::apply_projection(const BoundingBoxf3& box, double near_z, double fa
}
#if ENABLE_LEGACY_OPENGL_REMOVAL
#if ENABLE_RAYCAST_PICKING
apply_projection(-w, w, -h, h, m_frustrum_zs.first, m_frustrum_zs.second);
#else
switch (m_type)
{
default:
@ -197,6 +290,7 @@ void Camera::apply_projection(const BoundingBoxf3& box, double near_z, double fa
break;
}
}
#endif // ENABLE_RAYCAST_PICKING
#else
glsafe(::glMatrixMode(GL_PROJECTION));
glsafe(::glLoadIdentity());
@ -221,6 +315,37 @@ void Camera::apply_projection(const BoundingBoxf3& box, double near_z, double fa
#endif // ENABLE_LEGACY_OPENGL_REMOVAL
}
#if ENABLE_RAYCAST_PICKING
void Camera::apply_projection(double left, double right, double bottom, double top, double near_z, double far_z)
{
assert(left != right && bottom != top && near_z != far_z);
const double inv_dx = 1.0 / (right - left);
const double inv_dy = 1.0 / (top - bottom);
const double inv_dz = 1.0 / (far_z - near_z);
switch (m_type)
{
default:
case EType::Ortho:
{
m_projection_matrix.matrix() << 2.0 * inv_dx, 0.0, 0.0, -(left + right) * inv_dx,
0.0, 2.0 * inv_dy, 0.0, -(bottom + top) * inv_dy,
0.0, 0.0, -2.0 * inv_dz, -(near_z + far_z) * inv_dz,
0.0, 0.0, 0.0, 1.0;
break;
}
case EType::Perspective:
{
m_projection_matrix.matrix() << 2.0 * near_z * inv_dx, 0.0, (left + right) * inv_dx, 0.0,
0.0, 2.0 * near_z * inv_dy, (bottom + top) * inv_dy, 0.0,
0.0, 0.0, -(near_z + far_z) * inv_dz, -2.0 * near_z * far_z * inv_dz,
0.0, 0.0, -1.0, 0.0;
break;
}
}
}
#endif // ENABLE_RAYCAST_PICKING
void Camera::zoom_to_box(const BoundingBoxf3& box, double margin_factor)
{
// Calculate the zoom factor needed to adjust the view around the given box.

18
src/slic3r/GUI/Camera.hpp
View File

@ -89,9 +89,23 @@ public:
double get_far_z() const { return m_frustrum_zs.second; }
const std::pair<double, double>& get_z_range() const { return m_frustrum_zs; }
#if ENABLE_RAYCAST_PICKING
double get_near_left() const;
double get_near_right() const;
double get_near_top() const;
double get_near_bottom() const;
double get_near_width() const;
double get_near_height() const;
#endif // ENABLE_RAYCAST_PICKING
double get_fov() const;
#if ENABLE_RAYCAST_PICKING
void set_viewport(int x, int y, unsigned int w, unsigned int h);
void apply_viewport() const;
#else
void apply_viewport(int x, int y, unsigned int w, unsigned int h);
#endif // ENABLE_RAYCAST_PICKING
#if !ENABLE_LEGACY_OPENGL_REMOVAL
void apply_view_matrix();
#endif // !ENABLE_LEGACY_OPENGL_REMOVAL
@ -99,6 +113,10 @@ public:
// If larger z span is needed, pass the desired values of near and far z (negative values are ignored)
void apply_projection(const BoundingBoxf3& box, double near_z = -1.0, double far_z = -1.0);
#if ENABLE_RAYCAST_PICKING
void apply_projection(double left, double right, double bottom, double top, double near_z, double far_z);
#endif // ENABLE_RAYCAST_PICKING
void zoom_to_box(const BoundingBoxf3& box, double margin_factor = DefaultZoomToBoxMarginFactor);
void zoom_to_volumes(const GLVolumePtrs& volumes, double margin_factor = DefaultZoomToVolumesMarginFactor);

147
src/slic3r/GUI/GLCanvas3D.cpp
View File

@ -1628,7 +1628,12 @@ void GLCanvas3D::render()
// and the viewport was set incorrectly, leading to tripping glAsserts further down
// the road (in apply_projection). That's why the minimum size is forced to 10.
Camera& camera = wxGetApp().plater()->get_camera();
#if ENABLE_RAYCAST_PICKING
camera.set_viewport(0, 0, std::max(10u, (unsigned int)cnv_size.get_width()), std::max(10u, (unsigned int)cnv_size.get_height()));
camera.apply_viewport();
#else
camera.apply_viewport(0, 0, std::max(10u, (unsigned int)cnv_size.get_width()), std::max(10u, (unsigned int)cnv_size.get_height()));
#endif // ENABLE_RAYCAST_PICKING
if (camera.requires_zoom_to_bed) {
zoom_to_bed();
@ -4606,7 +4611,12 @@ void GLCanvas3D::_render_thumbnail_internal(ThumbnailData& thumbnail_data, const
Camera camera;
camera.set_type(camera_type);
camera.set_scene_box(scene_bounding_box());
#if ENABLE_RAYCAST_PICKING
camera.set_viewport(0, 0, thumbnail_data.width, thumbnail_data.height);
camera.apply_viewport();
#else
camera.apply_viewport(0, 0, thumbnail_data.width, thumbnail_data.height);
#endif // ENABLE_RAYCAST_PICKING
camera.zoom_to_box(volumes_box);
#if ENABLE_LEGACY_OPENGL_REMOVAL
@ -4908,7 +4918,11 @@ void GLCanvas3D::_render_thumbnail_legacy(ThumbnailData& thumbnail_data, unsigne
#endif // ENABLE_THUMBNAIL_GENERATOR_DEBUG_OUTPUT
// restore the default framebuffer size to avoid flickering on the 3D scene
#if ENABLE_RAYCAST_PICKING
wxGetApp().plater()->get_camera().apply_viewport();
#else
wxGetApp().plater()->get_camera().apply_viewport(0, 0, cnv_size.get_width(), cnv_size.get_height());
#endif // ENABLE_RAYCAST_PICKING
}
bool GLCanvas3D::_init_toolbars()
@ -5567,6 +5581,58 @@ void GLCanvas3D::_rectangular_selection_picking_pass()
std::set<int> idxs;
if (m_picking_enabled) {
#if ENABLE_RAYCAST_PICKING
const size_t width = std::max<size_t>(m_rectangle_selection.get_width(), 1);
const size_t height = std::max<size_t>(m_rectangle_selection.get_height(), 1);
const OpenGLManager::EFramebufferType framebuffers_type = OpenGLManager::get_framebuffers_type();
bool use_framebuffer = framebuffers_type != OpenGLManager::EFramebufferType::Unknown;
GLuint render_fbo = 0;
GLuint render_tex = 0;
GLuint render_depth = 0;
if (use_framebuffer) {
// setup a framebuffer which covers only the selection rectangle
if (framebuffers_type == OpenGLManager::EFramebufferType::Arb) {
glsafe(::glGenFramebuffers(1, &render_fbo));
glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, render_fbo));
}
else {
glsafe(::glGenFramebuffersEXT(1, &render_fbo));
glsafe(::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, render_fbo));
}
glsafe(::glGenTextures(1, &render_tex));
glsafe(::glBindTexture(GL_TEXTURE_2D, render_tex));
glsafe(::glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
glsafe(::glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
if (framebuffers_type == OpenGLManager::EFramebufferType::Arb) {
glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, render_tex, 0));
glsafe(::glGenRenderbuffers(1, &render_depth));
glsafe(::glBindRenderbuffer(GL_RENDERBUFFER, render_depth));
glsafe(::glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height));
glsafe(::glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, render_depth));
}
else {
glsafe(::glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, render_tex, 0));
glsafe(::glGenRenderbuffersEXT(1, &render_depth));
glsafe(::glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, render_depth));
glsafe(::glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, width, height));
glsafe(::glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, render_depth));
}
const GLenum drawBufs[] = { GL_COLOR_ATTACHMENT0 };
glsafe(::glDrawBuffers(1, drawBufs));
if (framebuffers_type == OpenGLManager::EFramebufferType::Arb) {
if (::glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
use_framebuffer = false;
}
else {
if (::glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT)
use_framebuffer = false;
}
}
#endif // ENABLE_RAYCAST_PICKING
if (m_multisample_allowed)
// This flag is often ignored by NVIDIA drivers if rendering into a screen buffer.
glsafe(::glDisable(GL_MULTISAMPLE));
@ -5576,10 +5642,49 @@ void GLCanvas3D::_rectangular_selection_picking_pass()
glsafe(::glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));
#if ENABLE_RAYCAST_PICKING
const Camera& main_camera = wxGetApp().plater()->get_camera();
Camera framebuffer_camera;
const Camera* camera = &main_camera;
if (use_framebuffer) {
// setup a camera which covers only the selection rectangle
const std::array<int, 4>& viewport = camera->get_viewport();
const double near_left = camera->get_near_left();
const double near_bottom = camera->get_near_bottom();
const double near_width = camera->get_near_width();
const double near_height = camera->get_near_height();
const double ratio_x = near_width / double(viewport[2]);
const double ratio_y = near_height / double(viewport[3]);
const double rect_near_left = near_left + double(m_rectangle_selection.get_left()) * ratio_x;
const double rect_near_bottom = near_bottom + (double(viewport[3]) - double(m_rectangle_selection.get_bottom())) * ratio_y;
double rect_near_right = near_left + double(m_rectangle_selection.get_right()) * ratio_x;
double rect_near_top = near_bottom + (double(viewport[3]) - double(m_rectangle_selection.get_top())) * ratio_y;
if (rect_near_left == rect_near_right)
rect_near_right = rect_near_left + ratio_x;
if (rect_near_bottom == rect_near_top)
rect_near_top = rect_near_bottom + ratio_y;
framebuffer_camera.look_at(camera->get_position(), camera->get_target(), camera->get_dir_up());
framebuffer_camera.apply_projection(rect_near_left, rect_near_right, rect_near_bottom, rect_near_top, camera->get_near_z(), camera->get_far_z());
framebuffer_camera.set_viewport(0, 0, width, height);
framebuffer_camera.apply_viewport();
camera = &framebuffer_camera;
}
_render_volumes_for_picking(*camera);
#else
_render_volumes_for_picking();
#endif // ENABLE_RAYCAST_PICKING
#if ENABLE_LEGACY_OPENGL_REMOVAL
#if ENABLE_RAYCAST_PICKING
_render_bed_for_picking(camera->get_view_matrix(), camera->get_projection_matrix(), !camera->is_looking_downward());
#else
const Camera& camera = wxGetApp().plater()->get_camera();
_render_bed_for_picking(camera.get_view_matrix(), camera.get_projection_matrix(), !camera.is_looking_downward());
#endif // ENABLE_RAYCAST_PICKING
#else
_render_bed_for_picking(!wxGetApp().plater()->get_camera().is_looking_downward());
#endif // ENABLE_LEGACY_OPENGL_REMOVAL
@ -5587,6 +5692,12 @@ void GLCanvas3D::_rectangular_selection_picking_pass()
if (m_multisample_allowed)
glsafe(::glEnable(GL_MULTISAMPLE));
#if ENABLE_RAYCAST_PICKING
const size_t px_count = width * height;
const size_t left = use_framebuffer ? 0 : (size_t)m_rectangle_selection.get_left();
const size_t top = use_framebuffer ? 0 : (size_t)get_canvas_size().get_height() - (size_t)m_rectangle_selection.get_top();
#else
int width = std::max((int)m_rectangle_selection.get_width(), 1);
int height = std::max((int)m_rectangle_selection.get_height(), 1);
int px_count = width * height;
@ -5594,6 +5705,7 @@ void GLCanvas3D::_rectangular_selection_picking_pass()
int left = (int)m_rectangle_selection.get_left();
int top = get_canvas_size().get_height() - (int)m_rectangle_selection.get_top();
if (left >= 0 && top >= 0) {
#endif // ENABLE_RAYCAST_PICKING
#define USE_PARALLEL 1
#if USE_PARALLEL
struct Pixel
@ -5635,7 +5747,30 @@ void GLCanvas3D::_rectangular_selection_picking_pass()
idxs.insert(volume_id);
}
#endif // USE_PARALLEL
#if ENABLE_RAYCAST_PICKING
if (camera != &main_camera)
main_camera.apply_viewport();
if (framebuffers_type == OpenGLManager::EFramebufferType::Arb) {
glsafe(::glBindFramebuffer(GL_FRAMEBUFFER, 0));
if (render_depth != 0)
glsafe(::glDeleteRenderbuffers(1, &render_depth));
if (render_fbo != 0)
glsafe(::glDeleteFramebuffers(1, &render_fbo));
}
else if (framebuffers_type == OpenGLManager::EFramebufferType::Ext) {
glsafe(::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0));
if (render_depth != 0)
glsafe(::glDeleteRenderbuffersEXT(1, &render_depth));
if (render_fbo != 0)
glsafe(::glDeleteFramebuffersEXT(1, &render_fbo));
}
if (render_tex != 0)
glsafe(::glDeleteTextures(1, &render_tex));
#else
}
#endif // ENABLE_RAYCAST_PICKING
}
m_hover_volume_idxs.assign(idxs.begin(), idxs.end());
@ -6038,7 +6173,11 @@ void GLCanvas3D::_render_overlays()
#endif // !ENABLE_LEGACY_OPENGL_REMOVAL
}
#if ENABLE_RAYCAST_PICKING
void GLCanvas3D::_render_volumes_for_picking(const Camera& camera) const
#else
void GLCanvas3D::_render_volumes_for_picking() const
#endif // ENABLE_RAYCAST_PICKING
{
#if ENABLE_LEGACY_OPENGL_REMOVAL
GLShaderProgram* shader = wxGetApp().get_shader("flat_clip");
@ -6054,7 +6193,11 @@ void GLCanvas3D::_render_volumes_for_picking() const
glsafe(::glEnableClientState(GL_NORMAL_ARRAY));
#endif // !ENABLE_LEGACY_OPENGL_REMOVAL
#if ENABLE_RAYCAST_PICKING
const Transform3d& view_matrix = camera.get_view_matrix();
#else
const Transform3d& view_matrix = wxGetApp().plater()->get_camera().get_view_matrix();
#endif // ENABLE_RAYCAST_PICKING
for (size_t type = 0; type < 2; ++ type) {
GLVolumeWithIdAndZList to_render = volumes_to_render(m_volumes.volumes, (type == 0) ? GLVolumeCollection::ERenderType::Opaque : GLVolumeCollection::ERenderType::Transparent, view_matrix);
for (const GLVolumeWithIdAndZ& volume : to_render)
@ -6066,8 +6209,12 @@ void GLCanvas3D::_render_volumes_for_picking() const
#if ENABLE_LEGACY_OPENGL_REMOVAL
volume.first->model.set_color(picking_decode(id));
shader->start_using();
#if ENABLE_RAYCAST_PICKING
shader->set_uniform("view_model_matrix", view_matrix * volume.first->world_matrix());
#else
const Camera& camera = wxGetApp().plater()->get_camera();
shader->set_uniform("view_model_matrix", camera.get_view_matrix() * volume.first->world_matrix());
#endif // ENABLE_RAYCAST_PICKING
shader->set_uniform("projection_matrix", camera.get_projection_matrix());
shader->set_uniform("volume_world_matrix", volume.first->world_matrix());
shader->set_uniform("z_range", m_volumes.get_z_range());

4
src/slic3r/GUI/GLCanvas3D.hpp
View File

@ -997,7 +997,11 @@ private:
#endif // ENABLE_RENDER_SELECTION_CENTER
void _check_and_update_toolbar_icon_scale();
void _render_overlays();
#if ENABLE_RAYCAST_PICKING
void _render_volumes_for_picking(const Camera& camera) const;
#else
void _render_volumes_for_picking() const;
#endif // ENABLE_RAYCAST_PICKING
void _render_current_gizmo() const;
void _render_gizmos_overlay();
void _render_main_toolbar();