I've found if I use a difference() anywhere, the preview pane becomes unusable. It usually displays nothing, or just a small segment of the first difference() operation and hides all other shapes, even if they're outside the difference. My hackish workaround right now is to comment out the call to difference(), and then uncomment when I do my final rendering, but obviously this is a huge hassle. Is this a known bug/limitation with the preview pane, or am I doing something wrong? I'm using version 2014.03 on Ubuntu. -- View this message in context: http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067.html Sent from the OpenSCAD mailing list archive at Nabble.com.

No known issue which would cause such drastic problem. There are some subtleties with difference(), perhaps you can share your code? ----- Unless specifically shown otherwise above, my contribution is in the Public Domain; To the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. This work is published globally via the internet. :) Inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ -- View this message in context: http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p11069.html Sent from the OpenSCAD mailing list archive at Nabble.com.

On Jan 17, 2015, at 12:45 PM, Cerin <chrisspen@gmail.com> wrote: > I've found if I use a difference() anywhere, the preview pane becomes > unusable. It usually displays nothing, or just a small segment of the first > difference() operation and hides all other shapes, even if they're outside > the difference. Sounds a bit like broken OpenGL drivers. Could you double check that you’re using stable recent drivers for your GPU? If that doesn’t help, could you share the content of Help->Library Info ? -Marius

This is my sample code: $fn=100; translate([11,0,0]){ cube([10,10,10],center=true); } //difference(){ cube([10,10,10],center=true); cylinder(h=20,d=2,center=true); //} The preview displays that as http://i.imgur.com/NCoss8p.png If you uncomment the difference(), the preview displays it as http://i.imgur.com/F7eY33W.png Note the first cube, which is not contained within the difference, completely disappears. My build info is: OpenSCAD Version: 2014.03 Compiler, build date: GCC "4.7.2", Mar 9 2014 Boost version: 1_53 Eigen version: 3.1.1 CGAL version, kernels: 4.0.2, Cartesian<Gmpq>, Extended_cartesian<Gmpq>, Epeck OpenCSG version: OpenCSG 1.3.2 Qt version: 4.8.2 MingW build: No GLib version: 2.38.2 OPENSCADPATH: <not set> OpenSCAD library path: /home/chris/.local/share/OpenSCAD/libraries /usr/local/lib/openscad/../../share/openscad/libraries GLEW version: 1.9.0 OpenGL Version: 1.4 (2.1.2 NVIDIA 304.116) GL Renderer: GeForce 9400M/integrated/SSE2 GL Vendor: NVIDIA Corporation RGBA(8880), depth(24), stencil(8) GL_ARB_framebuffer_object: yes GL_EXT_framebuffer_object: yes GL_EXT_packed_depth_stencil: yes Using QGLWidget GL Extensions: GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_framebuffer_object GL_ARB_imaging GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_shadow GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_mirrored_repeat GL_ARB_texture_non_power_of_two GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_transpose_matrix GL_ARB_vertex_program GL_ARB_window_pos GL_ATI_draw_buffers GL_ATI_texture_float GL_ATI_texture_mirror_once GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_pixels GL_EXT_point_parameters GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc GL_EXT_texture_edge_clamp GL_EXT_texture_env_add GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_lod GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_object GL_EXT_texture_rectangle GL_EXT_vertex_array GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_INGR_blend_func_separate GL_NV_blend_square GL_NV_copy_depth_to_color GL_NV_depth_clamp GL_NV_fog_distance GL_NV_fragment_program GL_NV_fragment_program2 GL_NV_fragment_program_option GL_NV_light_max_exponent GL_NV_multisample_filter_hint GL_NV_packed_depth_stencil GL_NV_point_sprite GL_NV_texgen_reflection GL_NV_texture_compression_vtc GL_NV_texture_env_combine4 GL_NV_texture_rectangle GL_NV_vertex_program GL_NV_vertex_program1_1 GL_NV_vertex_program2 GL_NV_vertex_program2_option GL_NV_vertex_program3 GL_OES_compressed_paletted_texture GL_OES_read_format GL_SGIS_generate_mipmap GL_SGIS_texture_border_clamp GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_SGIX_depth_texture GL_SGIX_shadow GL_SUN_multi_draw_arrays GL_SUN_slice_accum On Sat, Jan 17, 2015 at 2:25 PM, MichaelAtOz [via OpenSCAD] < ml-node+s1091067n11069h48@n5.nabble.com> wrote: > No known issue which would cause such drastic problem. > > There are some subtleties with difference(), perhaps you can share your > code? > Unless specifically shown otherwise above, my contribution is in the > Public Domain; To the extent possible under law, I have waived all > copyright and related or neighbouring rights to this work. This work is > published globally via the internet. :) > Inclusion of works of previous authors is not included in the above. > The *TPP* is no simple *“trade agreement.”* *Fight it!* > http://www.ourfairdeal.org/ > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p11069.html > To unsubscribe from How to prevent difference from breaking preview?, click > here > <http://forum.openscad.org/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=11067&code=Y2hyaXNzcGVuQGdtYWlsLmNvbXwxMTA2N3wxMjg4NzkwNjM4> > . > NAML > <http://forum.openscad.org/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p11071.html Sent from the OpenSCAD mailing list archive at Nabble.com.

On 01/17/2015 10:01 PM, Cerin wrote: > My build info is: > OpenSCAD Version: 2014.03 > Compiler, build date: GCC "4.7.2", Mar 9 2014 > I'm assuming that's Ubuntu 14.04 LTS? Can you try the PPA which has a binary specifically build for this Ubuntu version: https://launchpad.net/~openscad/+archive/ubuntu/releases ciao, Torsten.

On Jan 17, 2015, at 16:01 PM, Cerin <chrisspen@gmail.com> wrote: > OpenGL Version: 1.4 (2.1.2 NVIDIA 304.116) > GL Renderer: GeForce 9400M/integrated/SSE2 Also, that’s a really old driver. OpenSCAD generally requires OpenGL >= 2.0. AFAIK, The 9400 M GPU is more than capable of OpenGL 2. -Marius

No, I'm using the binary http://files.openscad.org/openscad-2014.03.x86-64.tar.gz that I downloaded from the site's downloads page. I'm actually still on Ubuntu 12.04. I use this machine for work, so it's not convenient yet for me to upgrade. On Sat, Jan 17, 2015 at 4:09 PM, tp3 [via OpenSCAD] < ml-node+s1091067n11072h41@n5.nabble.com> wrote: > On 01/17/2015 10:01 PM, Cerin wrote: > > My build info is: > > OpenSCAD Version: 2014.03 > > Compiler, build date: GCC "4.7.2", Mar 9 2014 > > > I'm assuming that's Ubuntu 14.04 LTS? > > Can you try the PPA which has a binary specifically build > for this Ubuntu version: > > https://launchpad.net/~openscad/+archive/ubuntu/releases > > ciao, > Torsten. > > > _______________________________________________ > OpenSCAD mailing list > [hidden email] <http:///user/SendEmail.jtp?type=node&node=11072&i=0> > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > -- Torsten > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p11072.html > To unsubscribe from How to prevent difference from breaking preview?, click > here > <http://forum.openscad.org/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=11067&code=Y2hyaXNzcGVuQGdtYWlsLmNvbXwxMTA2N3wxMjg4NzkwNjM4> > . > NAML > <http://forum.openscad.org/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p11074.html Sent from the OpenSCAD mailing list archive at Nabble.com.

On 01/17/2015 10:17 PM, Cerin wrote: > No, I'm using the binary http://files.openscad.org/openscad-2014.03.x86-64.tar.gz > that I downloaded from the site's downloads page. > That's likely a collision of the shipped driver libraries with the NVIDIA stuff from the system (hence the OpenGL 1.4). It might work if you rename the libGL.so.1 in /usr/local/lib/openscad/ to something like libGL.so.1.old. That should pick up the NVIDIA lib then (which is hopefully compatible). ciao, Torsten.

Just wanted to say thanks. The old libGL.so.1 included in the package was the exact problem. Glxinfo reports I actually have OpenGL 3.3.0 installed, and when I removed that old lib, now OpenSCAD renders everything correctly. On Sat, Jan 17, 2015 at 4:26 PM, tp3 [via OpenSCAD] < ml-node+s1091067n11075h34@n5.nabble.com> wrote: > On 01/17/2015 10:17 PM, Cerin wrote: > > No, I'm using the binary > http://files.openscad.org/openscad-2014.03.x86-64.tar.gz > > that I downloaded from the site's downloads page. > > > That's likely a collision of the shipped driver libraries with the > NVIDIA stuff from the system (hence the OpenGL 1.4). > > It might work if you rename the libGL.so.1 in /usr/local/lib/openscad/ > to something like libGL.so.1.old. That should pick up the NVIDIA lib > then (which is hopefully compatible). > > ciao, > Torsten. > > > > _______________________________________________ > OpenSCAD mailing list > [hidden email] <http:///user/SendEmail.jtp?type=node&node=11075&i=0> > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > -- Torsten > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p11075.html > To unsubscribe from How to prevent difference from breaking preview?, click > here > <http://forum.openscad.org/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=11067&code=Y2hyaXNzcGVuQGdtYWlsLmNvbXwxMTA2N3wxMjg4NzkwNjM4> > . > NAML > <http://forum.openscad.org/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://forum.openscad.org/How-to-prevent-difference-from-breaking-preview-tp11067p12334.html Sent from the OpenSCAD mailing list archive at Nabble.com.