Fixes of VBO rendering on Linux with wxWidgets & GTK
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b60ae4745f
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36416d77b8
3 changed files with 18 additions and 1 deletions
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@ -906,13 +906,16 @@ sub UseVBOs {
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my ($self) = @_;
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if (! defined ($self->{use_VBOs})) {
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# This is a special path for wxWidgets on GTK, where an OpenGL context is initialized
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# first when an OpenGL widget is shown for the first time. How ugly.
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return 0 if (! $self->init && $^O eq 'linux');
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# Don't use VBOs if anything fails.
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$self->{use_VBOs} = 0;
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if ($self->GetContext) {
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$self->SetCurrent($self->GetContext);
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my @gl_version = split(/\./, glGetString(GL_VERSION));
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$self->{use_VBOs} = int($gl_version[0]) >= 2;
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# print "InitGL $self OpenGL major: $gl_version[0], minor: $gl_version[1]. Use VBOs: ", $self->{use_VBOs}, "\n";
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# print "UseVBOs $self OpenGL major: $gl_version[0], minor: $gl_version[1]. Use VBOs: ", $self->{use_VBOs}, "\n";
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}
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}
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return $self->{use_VBOs};
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@ -968,6 +971,13 @@ sub InitGL {
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return unless $self->GetContext;
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$self->init(1);
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# This is a special path for wxWidgets on GTK, where an OpenGL context is initialized
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# first when an OpenGL widget is shown for the first time. How ugly.
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# In that case the volumes are wainting to be moved to Vertex Buffer Objects
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# after the OpenGL context is being initialized.
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$self->volumes->finalize_geometry(1)
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if ($^O eq 'linux' && $self->UseVBOs);
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glClearColor(0, 0, 0, 1);
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glColor3f(1, 0, 0);
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glEnable(GL_DEPTH_TEST);
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@ -264,6 +264,7 @@ public:
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void set_range(coordf_t low, coordf_t high);
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void render() const;
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void finalize_geometry(bool use_VBOs) { this->indexed_vertex_array.finalize_geometry(use_VBOs); }
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void release_geometry() { this->indexed_vertex_array.release_geometry(); }
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/************************************************ Layer height texture ****************************************************/
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@ -312,6 +313,11 @@ public:
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// Render the volumes by OpenGL.
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void render_VBOs() const;
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void render_legacy() const;
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// Finalize the initialization of the geometry & indices,
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// upload the geometry and indices to OpenGL VBO objects
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// and shrink the allocated data, possibly relasing it if it has been loaded into the VBOs.
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void finalize_geometry(bool use_VBOs) { for (auto *v : volumes) v->finalize_geometry(use_VBOs); }
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// Release the geometry data assigned to the volumes.
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// If OpenGL VBOs were allocated, an OpenGL context has to be active to release them.
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void release_geometry() { for (auto *v : volumes) v->release_geometry(); }
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@ -87,6 +87,7 @@
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void render_VBOs() const;
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void render_legacy() const;
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void finalize_geometry(bool use_VBOs);
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void release_geometry();
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%{
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