http://blog.gmane.org/gmane.comp.graphics.agg hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.graphics.agg/5438 <pre>Hi, I'm using AGG to render documents with texts, images and music scores. While testing rendering images, I've been experiencing occasional crashes. Problem was finally located in file agg_span_image_filter_rgba.h, in method [line 61]: void generate(color_type* span, int x, int y, unsigned len) I've found that the crashes were caused because variable 'y' was assigned a negative value in line 67: base_type::interpolator().coordinates(&amp;x, &amp;y); I don't know the reason. It is a random issue. In a loop of re-rendering the same bitmap, it will run 15 to 20 times OK before crashing. So I tried to by-pass the problem by adding the following lines [new lines 68 &amp; 69] if (y &lt; 0) y = 0; //CSG. 7/May/2012. Bug by-pass. if (x &lt; 0) x = 0; //CSG. 7/May/2012. Bug by-pass. Now, everything seems to work OK and I have no longer experienced any problem. Also, I have not noticed any 'glitch' in the drawings.due to this hack. I'm just posting this just in case anyone is interested, although it is probabl</pre> cecilio 2012-05-07T17:12:38 http://comments.gmane.org/gmane.comp.graphics.agg/5435 <pre>Hello everyone! I'm about to impart on a project involving agg thanks to its lack of reliance on OS specific libraries and was hoping I could receive a little pre-advise before setting off on the long journey of much code and little result until I emerge at the end. I'm wishing to integrate agg with the ShiVa3D game engine (which provides access to pixelbuffers for rendering results) and run my app on anything from Windows to Android. My only question is: Is it possible to render text with agg in a manner that is not os dependant? Any advice/examples on the process if so is much appreciated. Any help and advice is much appreciated. Many thanks, Ali ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://ww</pre> Alistair Lowe 2012-05-04T14:44:12 http://comments.gmane.org/gmane.comp.graphics.agg/5427 <pre> Hi, I'm currently exploring an OpenGL implementation of the Agg library using GPU and it might interest some of you: Font rendering -------------- For font rendering, you can find some screenshots at: http://code.google.com/p/freetype-gl/ I think the quality is quite decent compared to the agg quality (no wonder, I just translated agg concepts). Spines, lines and circles ------------------------- I'm now exploring lines, arcs and surfaces rendering. Early experiments are available at: http://code.google.com/p/gl-agg/ I think the quality is also quite decent some far (but maybe I'm not really objective). Bezier curves are simply interpolated using the agg tesselation algorithm. Antialias is done by parametrizing the curve with texture coordinates and then the shader does the "magic" stuff. (I know it's possible to render thin bezier directly on the GPU but I did not find a solution for thick ones). Circle are made of 2 triangles and computed/antialiase by the GPU Straight lines are made of 6 tr</pre> Nicolas Rougier 2012-04-20T15:38:56 http://comments.gmane.org/gmane.comp.graphics.agg/5424 <pre>Hi, I was using libgd for a long time. now I want to try AGG which says will pays off better in performance for vector rendering i have to render some points,lines and polygons at different times; i rendered polygon using this code typedef agg::pixfmt_rgb24 pixfmt; int width =640; int height = 480; unsigned char* buffer = new unsigned char[width *height*3]; agg::rasterizer_scanline_aa&lt;&gt; ras; agg::scanline_u8 sl; agg::rendering_buffer rbuf; rbuf = agg::rendering_buffer(buffer, width, height, width * 3); pixfmt pixf(rbuf); agg::renderer_base&lt;pixfmt&gt; ren_base = agg::renderer_base&lt;pixfmt&gt;(pixf); agg::renderer_scanline_aa_solid&lt;agg::renderer_base&lt;pixfmt&gt; &gt; ren_sl(ren_base); agg::path_storage my_path; for(pIt = pointList-&gt;begin();pIt!= pointList-&gt;end();++pIt) { VectorPoint point = *(pIt); my_path.line_to(point.x,point.y) } ras.add_path(my_path); ren_sl.color(agg::rgba(255, 0, 0)); agg::render_scanlines(ras, sl, ren_sl); with this code i can render polygon. But my </pre> Mohammed Rashad 2012-03-11T13:58:08 http://comments.gmane.org/gmane.comp.graphics.agg/5419 <pre>Anyone implemented a software Z-Buffer ? I am trying to render an isometric image of a cube, with simple lighting. The site /demo/gouraud.cpp.html could be used for simple lighting, but what about clipping triangles, or anti-aliased lines ? Some sort of Z-Buffer should be used, to keep track of the depth values. Edgar ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 </pre> Edgar 't Hart 2012-01-13T20:56:59 http://comments.gmane.org/gmane.comp.graphics.agg/5416 <pre>Hi all, Is it possible to draw non-anti-aliased dashed lines using a Bresenham-type algorithm in Antigrain? For instance, I'd like to draw a 45º dotted line, where every other pixel is solid. I've tried several approaches, including using agg::renderer_outline_image with an image that defines the dashes (http://permalink.gmane.org/gmane.comp.graphics.agg/972) and using agg::conv_dash and setting gamma_threshold(0.5) (http://permalink.gmane.org/gmane.comp.graphics.agg/1428), but I can't seem to get a clean drawing for the 45º dotted case. Thanks, Ryan ------------------------------------------------------------------------------ Learn Windows Azure Live! Tuesday, Dec 13, 2011 Microsoft is holding a special Learn Windows Azure training event for developers. It will provide a great way to learn Windows Azure and what it provides. You can attend the event by watching it streamed LIVE online. Learn more at http://p.sf.net/sfu/ms-windowsazure_______________________________________________ Vector-agg-gene</pre> Ryan Brown 2011-12-12T15:52:56 http://comments.gmane.org/gmane.comp.graphics.agg/5415 <pre>SSE2 Vectorization of Alphablend Code: http://www.codeproject.com/KB/cpp/sse2alphablend.aspx I thought this might be of use, as I recall people talking about wanting to develop some speed improvements in the library. ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d </pre> Jim Crafton 2011-11-17T17:41:02 http://comments.gmane.org/gmane.comp.graphics.agg/5405 <pre>Hello, I am wondering if there is a solution to use AGG to render Triangle Strips. Right now, the triangles don’t dock into each other because of the anti-aliasing and the Gamma/Dilate technique doesn’t work automatically for all color/opacity values. Any ideas would be highly appreciated. Thank you. SG.------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1_______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Satya G Meka 2011-10-04T02:44:59 http://comments.gmane.org/gmane.comp.graphics.agg/5402 <pre>If I understand correctly, the rasterizer_scanline_aa_nogamma class was added to provide a slightly more efficient choice for those do not need gamma correction. However, I did some testing today and found the rasterizer_scanline_aa_nogamma class offers almost no speed gain at all. The difference between rasterizer_scanline_aa and rasterizer_scanline_aa_nogamma is so small that the results are indistinguishable. Because of this, I'd rather see rasterizer_scanline_aa_nogamma removed from AGG as IMO the massively duplication of code far out weights its benefit. What do you guys think? -- Finalpatch ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 </pre> finalpatch 2011-10-03T10:42:58 http://comments.gmane.org/gmane.comp.graphics.agg/5399 <pre> Hello, I've been using AGG for a while now and its a remarkable C++ library. I love how good quality graphics this library creates. Its a shame, its no longer actively developed. I've been trying to understand how AGG works internally, but having a tough time figuring it out. I hope someone can explain it to me. I understand that all the shapes are converted to polygons and the vertices are added to a rasterizer object. Then they are rasterized by the Scanline object(?) and then spans are created. Later on the spans are rendered. Now, I am trying to go through the rasterization process and I couldn't understand the difference between pixel "cover" and pixel "area" ? Which one is applied to the color for anti-aliasing? Also, what are pixel cells? Why are they being sorted? Please bear with me, since I'm trying to understand. Thank you again. S G Meka. ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a</pre> Satya G Meka 2011-09-21T21:27:23 http://comments.gmane.org/gmane.comp.graphics.agg/5386 <pre>Hi, dear all, I develop a new vector graphic library base on agg. It has a cairo like API, but more lightweight. If someone interested in it, or to provide patchs, I would appreciate it. This project released under the GPL,and hosting on google code. project home : http://code.google.com/p/picasso-graphic/ zhangjipeng ------------------------------------------------------------------------------ EMC VNX: the world's simplest storage, starting under $10K The only unified storage solution that offers unified management Up to 160% more powerful than alternatives and 25% more efficient. Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev_______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> ji peng zhang 2011-08-28T06:49:13 http://comments.gmane.org/gmane.comp.graphics.agg/5380 <pre>Hi, I have one question: Is conversion from 1 bit per sample grayscale to 8 bit per sample grayscale images achievable in AGG? Thanks, Marko V ------------------------------------------------------------------------------ Get a FREE DOWNLOAD! and learn more about uberSVN rich system, user administration capabilities and model configuration. Take the hassle out of deploying and managing Subversion and the tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 _______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Marko Vranić 2011-08-23T15:37:25 http://comments.gmane.org/gmane.comp.graphics.agg/5377 <pre>Hi. I'm new to AGG. So far I have read the tutorial and tested some of its code. Sadly the part about the Scanline Renderers is incomplet. http://www.antigrain.com/doc/scanlines/scanlines.agdoc.html I started to implement an anti-aliased line drawing based on this mailing list posting: http://sourceforge.net/mailarchive/message.php?msg_id=26931763 Unfortunately the result is a simple gray (which is the clear color) image. While it is expected to show a line path. Also I don't know how to change the line width. Here is my testing code: vl::ref&lt;vl::Image&gt; rasterize() const { using namespace vl; // create image ivec2 extent = getExtent(); int byteAlignment = 1; ref&lt;vl::Image&gt; img = new vl::Image(extent.x(), extent.y(), 0, byteAlignment, IF_LUMINANCE, IT_UNSIGNED_BYTE); img-&gt;allocate(); // define some types to make the code more readable typedef agg::rendering_buffer RenderingBuffer; typedef agg::pixfmt_</pre> Waldemar Schwan 2011-07-29T10:57:04 http://comments.gmane.org/gmane.comp.graphics.agg/5349 <pre>So I was looking at AGG to use for realtime rendering of vector graphics, but I have a few concerns. I normally use OpenGL and I know that in order to use AGG with OpenGL, I would have to feed the pixel data through a bitmap and render that to a quad. It seems to me as if AGG is very CPU bound, so naturally my concerns are how much of a performance hit this will bring, especially given that I already have numerous other things that already take up alot of CPU time (scripting languages do that). Does anyone use AGG with OpenGL at all who can provide some feedback? I really like how the API looks, and am very interested in using AGG for providing what could be extremely powerful interface rendering capabilities to my game engine. -Mike ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Ch</pre> Mike Ryan 2011-06-20T01:31:45 http://comments.gmane.org/gmane.comp.graphics.agg/5344 <pre>------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd_______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Jerry Evans 2011-05-06T12:35:15 http://comments.gmane.org/gmane.comp.graphics.agg/5339 <pre>------------------------------------------------------------------------------ Forrester Wave Report - Recovery time is now measured in hours and minutes not days. Key insights are discussed in the 2010 Forrester Wave Report as part of an in-depth evaluation of disaster recovery service providers. Forrester found the best-in-class provider in terms of services and vision. Read this report now! http://p.sf.net/sfu/ibm-webcastpromo_______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Jerry Evans 2011-04-13T13:23:54 http://comments.gmane.org/gmane.comp.graphics.agg/5330 <pre>------------------------------------------------------------------------------ Forrester Wave Report - Recovery time is now measured in hours and minutes not days. Key insights are discussed in the 2010 Forrester Wave Report as part of an in-depth evaluation of disaster recovery service providers. Forrester found the best-in-class provider in terms of services and vision. Read this report now! http://p.sf.net/sfu/ibm-webcastpromo_______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Jerry Evans 2011-04-11T20:14:43 http://comments.gmane.org/gmane.comp.graphics.agg/5321 <pre>------------------------------------------------------------------------------ Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf _______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Jerry Evans 2011-04-01T16:39:15 http://comments.gmane.org/gmane.comp.graphics.agg/5320 <pre>------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d_______________________________________________ Vector-agg-general mailing list Vector-agg-general&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vector-agg-general </pre> Jerry Evans 2011-03-19T17:37:13 http://comments.gmane.org/gmane.comp.graphics.agg/5308 <pre>I would appreciate some guidance and ideas about how to implement the Print function in an application in which the content is rendered with AGG. My first idea is to split the paper size in smaller rectangles, so that the necessary bitmaps do not consume all computer memory. Then render and send to printer each bitmap. Any one could point me to references or to some code for learning how to do this? Is there any better approach? Thanks in advance, Cecilio ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d </pre> cecilio 2011-03-13T17:14:33 http://comments.gmane.org/gmane.comp.graphics.agg/5300 <pre>When a line segment is 90 or 180 degrees (has same x or y), the subpixel logic makes the lines appear as 50% transparent and twice as fat as they should be. For example, the fill in this polygon is 1 pixel wide stroked lines: http://img233.imageshack.us/i/agg.png/ Is there any way to ommit this, such as a stock conv_something&lt;&gt; ? If not, maybe a conv_round&lt;&gt; or something like that rounds of to whole pixels would be the way to go ? </pre> Oyvind Idland 2011-03-07T13:31:05 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.graphics.agg