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130 lines
4.0 KiB
130 lines
4.0 KiB
/* |
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License version 3 for more details. |
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*/ |
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#include "IndexedMesh.h" |
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#include <Utility/Debug.h> |
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#include "Buffer.h" |
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#include "Context.h" |
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#include "Extensions.h" |
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namespace Magnum { |
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IndexedMesh::BindIndexBufferImplementation IndexedMesh::bindIndexBufferImplementation = &IndexedMesh::bindIndexBufferImplementationDefault; |
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IndexedMesh::BindIndexedImplementation IndexedMesh::bindIndexedImplementation = &IndexedMesh::bindIndexedImplementationDefault; |
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std::size_t IndexedMesh::indexSize(IndexType type) { |
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switch(type) { |
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case IndexType::UnsignedByte: return 1; |
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case IndexType::UnsignedShort: return 2; |
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case IndexType::UnsignedInt: return 4; |
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} |
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CORRADE_INTERNAL_ASSERT(false); |
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} |
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IndexedMesh* IndexedMesh::setIndexBuffer(Buffer* buffer) { |
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_indexBuffer = buffer; |
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(this->*bindIndexBufferImplementation)(); |
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return this; |
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} |
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void IndexedMesh::draw() { |
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if(!_indexCount) return; |
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bind(); |
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glDrawElements(static_cast<GLenum>(primitive()), _indexCount, static_cast<GLenum>(_indexType), nullptr); |
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unbind(); |
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} |
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void IndexedMesh::bind() { |
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CORRADE_ASSERT(!_indexCount || _indexBuffer, "IndexedMesh: index buffer must be added if index count is non-zero", ); |
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Mesh::bind(); |
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(this->*bindIndexedImplementation)(); |
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} |
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void IndexedMesh::initializeContextBasedFunctionality(Context* context) { |
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/** @todo VAOs are in ES 3.0 and as extension in ES 2.0, enable them when some extension wrangler is available */ |
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#ifndef MAGNUM_TARGET_GLES |
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if(context->isExtensionSupported<Extensions::GL::APPLE::vertex_array_object>()) { |
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Debug() << "IndexedMesh: using" << Extensions::GL::APPLE::vertex_array_object::string() << "features"; |
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bindIndexBufferImplementation = &IndexedMesh::bindIndexBufferImplementationVAO; |
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bindIndexedImplementation = &IndexedMesh::bindIndexedImplementationVAO; |
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} |
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#else |
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static_cast<void>(context); |
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#endif |
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} |
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void IndexedMesh::bindIndexBufferImplementationDefault() {} |
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void IndexedMesh::bindIndexBufferImplementationVAO() { |
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bindVAO(vao); |
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_indexBuffer->bind(Buffer::Target::ElementArray); |
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} |
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void IndexedMesh::bindIndexedImplementationDefault() { |
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if(_indexBuffer) _indexBuffer->bind(Buffer::Target::ElementArray); |
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else Buffer::unbind(Buffer::Target::ElementArray); |
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} |
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void IndexedMesh::bindIndexedImplementationVAO() {} |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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Debug operator<<(Debug debug, IndexedMesh::IndexType value) { |
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switch(value) { |
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#define _c(value) case IndexedMesh::IndexType::value: return debug << "IndexedMesh::IndexType::" #value; |
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_c(UnsignedByte) |
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_c(UnsignedShort) |
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_c(UnsignedInt) |
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#undef _c |
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} |
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return debug << "IndexedMesh::IndexType::(invalid)"; |
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} |
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#endif |
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} |
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namespace Corrade { namespace Utility { |
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std::string ConfigurationValue<Magnum::IndexedMesh::IndexType>::toString(Magnum::IndexedMesh::IndexType value, ConfigurationValueFlags) { |
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switch(value) { |
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#define _c(value) case Magnum::IndexedMesh::IndexType::value: return #value; |
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_c(UnsignedByte) |
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_c(UnsignedShort) |
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_c(UnsignedInt) |
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#undef _c |
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} |
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return ""; |
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} |
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Magnum::IndexedMesh::IndexType ConfigurationValue<Magnum::IndexedMesh::IndexType>::fromString(const std::string& stringValue, ConfigurationValueFlags) { |
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#define _c(value) if(stringValue == #value) return Magnum::IndexedMesh::IndexType::value; |
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_c(UnsignedByte) |
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_c(UnsignedShort) |
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_c(UnsignedInt) |
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#undef _c |
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return Magnum::IndexedMesh::IndexType::UnsignedInt; |
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} |
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}}
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