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124 lines
3.9 KiB
C++
124 lines
3.9 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2012 Ceetron AS
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//
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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//##################################################################################################
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#include "cvfBase.h"
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#include "cvfAssert.h"
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#include "cvfMath.h"
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#include "cvfPrimitiveSetDirect.h"
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#include "cvfOpenGL.h"
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namespace cvf {
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//==================================================================================================
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///
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/// \class cvf::PrimitiveSetDirect
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/// \ingroup Render
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///
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///
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///
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//==================================================================================================
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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PrimitiveSetDirect::PrimitiveSetDirect(PrimitiveType primitiveType)
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: PrimitiveSet(primitiveType),
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m_startIndex(0),
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m_indexCount(0)
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void PrimitiveSetDirect::render(OpenGLContext* oglContext) const
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{
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if (m_indexCount == 0)
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{
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return;
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}
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GLint first = static_cast<GLint>(m_startIndex);
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GLsizei count = static_cast<GLsizei>(m_indexCount);
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glDrawArrays(primitiveTypeOpenGL(), first, count);
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CVF_CHECK_OGL(oglContext);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void PrimitiveSetDirect::createUploadBufferObjectsGPU(OpenGLContext* /*oglContext*/)
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void PrimitiveSetDirect::releaseBufferObjectsGPU()
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void PrimitiveSetDirect::setStartIndex(size_t startIndex)
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{
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m_startIndex = startIndex;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void PrimitiveSetDirect::setIndexCount(size_t indexCount)
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{
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m_indexCount = indexCount;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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size_t PrimitiveSetDirect::indexCount() const
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{
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return m_indexCount;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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uint PrimitiveSetDirect::index(size_t i) const
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{
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CVF_TIGHT_ASSERT(i < m_indexCount);
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return static_cast<uint>(m_startIndex + i);
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}
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} // namespace cvf
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