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Vizir: High-order mesh and solution visualization using OpenGL 4.0 graphic pipeline

Adrien Loseille 1 Rémi Feuillet 1 
1 Gamma3 - Automatic mesh generation and advanced methods
ICD - Institut Charles Delaunay, Inria Saclay - Ile de France
Abstract : OpenGL 4 with GLSL shading language have become a standard on many common archi-tectures (Mac, Linux, Windows, , ...) from a couple of years. In the mean time, high-order methods (for flow solution and for meshing algorithm) are emerging. Many of them have proven their abilities to provide accurate results on complex (3D) geometries. However, the assessment of a particular meshing algorithm or of a high-order numerical scheme strongly relies on the capacity to validate and inspect visually the current mesh/solution at hand. However, having at the same time, an accurate and interactive visualization process for high-order mesh/solution is still a challenge as complex process are usually involved in the graphic pipeline: non linear root finding, ray tracing, GPU programming,. .. . In this paper, we discuss the current status and issues of using the (raw) OpenGL 4 pipeline to render curved high-order entities, and almost pixel-exact solutions. We illustrate this process on meshes and solutions issued from high-order curved from CAD and with high-order interpolated solutions.
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Submitted on : Wednesday, January 17, 2018 - 4:28:04 PM
Last modification on : Friday, February 4, 2022 - 3:29:47 AM
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Adrien Loseille, Rémi Feuillet. Vizir: High-order mesh and solution visualization using OpenGL 4.0 graphic pipeline. 2018 - AIAA Aerospace Sciences Meeting, AIAA SciTech Forum, Jan 2018, kissimmee, United States. pp.1-13, ⟨10.2514/6.2018-1174⟩. ⟨hal-01686714⟩



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