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Updated basic example and associated documentation.

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This commit is contained in:
David Williams
2010-08-21 11:55:15 +00:00
parent fdf21f7846
commit 6d58348297
3 changed files with 20 additions and 53 deletions
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18
examples/Basic/OpenGLWidget.cpp
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@ -14,30 +14,24 @@ OpenGLWidget::OpenGLWidget(QWidget *parent)
void OpenGLWidget::setSurfaceMeshToRender(const PolyVox::SurfaceMesh& surfaceMesh)
{
//Sanity check that we have something to render.
if(surfaceMesh.getVertices().empty() || surfaceMesh.getIndices().empty())
{
return;
}
//Convienient access to the vertices and indices
vector<uint32_t>& vecIndices = const_cast<vector<uint32_t>&>(surfaceMesh.getIndices());
vector<SurfaceVertex>& vecVertices = const_cast<vector<SurfaceVertex>&>(surfaceMesh.getVertices());
const vector<uint32_t>& vecIndices = surfaceMesh.getIndices();
const vector<SurfaceVertex>& vecVertices = surfaceMesh.getVertices();
//Build an OpenGL index buffer
glGenBuffers(1, &indexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
GLvoid* pIndices = static_cast<GLvoid*>(&(vecIndices[0]));
const GLvoid* pIndices = static_cast<const GLvoid*>(&(vecIndices[0]));
glBufferData(GL_ELEMENT_ARRAY_BUFFER, vecIndices.size() * sizeof(uint32_t), pIndices, GL_STATIC_DRAW);
//Build an OpenGL vertex buffer
glGenBuffers(1, &vertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
GLvoid* pVertices = static_cast<GLvoid*>(&(vecVertices[0]));
const GLvoid* pVertices = static_cast<const GLvoid*>(&(vecVertices[0]));
glBufferData(GL_ARRAY_BUFFER, vecVertices.size() * sizeof(SurfaceVertex), pVertices, GL_STATIC_DRAW);
m_uBeginIndex = surfaceMesh.m_vecLodRecords[0].beginIndex;
m_uEndIndex = surfaceMesh.m_vecLodRecords[0].endIndex;
m_uBeginIndex = 0;
m_uEndIndex = vecIndices.size();
}
void OpenGLWidget::initializeGL()