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62 lines
2.3 KiB
62 lines
2.3 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz> |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the "Software"), |
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to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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and/or sell copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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DEALINGS IN THE SOFTWARE. |
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*/ |
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#include "FullScreenTriangle.h" |
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#include "Math/Vector2.h" |
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#include "AbstractShaderProgram.h" |
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#include "Buffer.h" |
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#include "Context.h" |
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#include "Mesh.h" |
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namespace Magnum { namespace MeshTools { |
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std::pair<Buffer*, Mesh> fullScreenTriangle() { |
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Mesh mesh; |
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mesh.setPrimitive(Mesh::Primitive::Triangles) |
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.setVertexCount(3); |
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Buffer* buffer = nullptr; |
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#ifndef MAGNUM_TARGET_GLES |
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if(!Context::current()->isVersionSupported(Version::GL300)) |
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#else |
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if(!Context::current()->isVersionSupported(Version::GLES300)) |
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#endif |
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{ |
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buffer = new Buffer; |
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constexpr Vector2 triangle[] = { |
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Vector2(-1.0, 1.0), |
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Vector2(-1.0, -3.0), |
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Vector2( 3.0, 1.0) |
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}; |
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buffer->setData(triangle, Buffer::Usage::StaticDraw); |
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/** @todo Is it possible to attach moveable buffer here to avoid heap |
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allocation? OTOH this is more effective in most (modern) cases */ |
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mesh.addInterleavedVertexBuffer(*buffer, 0, AbstractShaderProgram::Attribute<0, Vector2>()); |
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} |
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return {std::move(buffer), std::move(mesh)}; |
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} |
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}}
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