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Graphics / Re: SFML 2.0 RC: sf::RenderTexture: bug or bad use?
« on: May 15, 2012, 10:23:12 am »
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Graphics / Re: SFML 2.0 RC: sf::RenderTexture: bug or bad use?
« on: May 08, 2012, 08:14:54 pm »
hum, i think it's the same problem as in this minimal app:
http://webshinra.fr/dyasbo.tar.gz
http://webshinra.fr/dyasbo.tar.gz
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Graphics / Re: SFML 2.0 RC: sf::RenderTexture: bug or bad use?
« on: May 08, 2012, 07:23:30 pm »
hum, i don't see how to write a 'simple' app which present this problem but I can give you access to repository and a little more explications.
https://gitorious.org/dyasb/pages/Home (wiki, for dependencies)
https://gitorious.org/dyasb/dyasbo (git repository)
the most important file is https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp
the run() function create a array of renderTexture https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp#line63
those rendertextures are built by "build from tree" https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp#line217
and then displayer in the right order https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp#line179
(if you take the time to compile the project, at the first run you will see a black screen, you should zoom back using "-" to get see the earth and then you can zoom in an navigate using the mouse)
https://gitorious.org/dyasb/pages/Home (wiki, for dependencies)
https://gitorious.org/dyasb/dyasbo (git repository)
the most important file is https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp
the run() function create a array of renderTexture https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp#line63
those rendertextures are built by "build from tree" https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp#line217
and then displayer in the right order https://gitorious.org/dyasb/dyasbo/blobs/master/src/Map2dDisplay.cpp#line179
(if you take the time to compile the project, at the first run you will see a black screen, you should zoom back using "-" to get see the earth and then you can zoom in an navigate using the mouse)
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Graphics / SFML 2.0 RC: sf::RenderTexture: bug or bad use?
« on: May 08, 2012, 05:02:21 pm »
Hi there,
i start a project months ago, and it finally go far enough to build a GUI.
But after a moment and after a lot of optimisation, a visual artefact appear.
http://www.pasteall.org/pic/show.php?id=31433 (screen-shoot)
I will rapidly explain the rendering process:
voxel of the world are generated by a coherent noise generator and saved with semantic information in a octree.
After that, the 2D renderer run through the octree, adding sprite to many sf::RenderTexture to buffer a "zone" and after it, sf::RenderTexture are put on the main vue (as sprites) to show the world.
the sf::RenderTexture is cleared with sf::Color::Transparent, but, when put on each other sf::RenderTexture seam to keep (black) color from the background and when transparent sprite are on a border we can see a black/gray gradien.
( sf::Color::Transparent is a black transparent but if i use (255,255,255,0) as background color the border look white instead of black)
Maybe I made a mistake using RenderTexture but it look like a bug from the lib.
What's your point of vue?
i start a project months ago, and it finally go far enough to build a GUI.
But after a moment and after a lot of optimisation, a visual artefact appear.
http://www.pasteall.org/pic/show.php?id=31433 (screen-shoot)
I will rapidly explain the rendering process:
voxel of the world are generated by a coherent noise generator and saved with semantic information in a octree.
After that, the 2D renderer run through the octree, adding sprite to many sf::RenderTexture to buffer a "zone" and after it, sf::RenderTexture are put on the main vue (as sprites) to show the world.
the sf::RenderTexture is cleared with sf::Color::Transparent, but, when put on each other sf::RenderTexture seam to keep (black) color from the background and when transparent sprite are on a border we can see a black/gray gradien.
( sf::Color::Transparent is a black transparent but if i use (255,255,255,0) as background color the border look white instead of black)
Maybe I made a mistake using RenderTexture but it look like a bug from the lib.
What's your point of vue?
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