AnotherFoxGuy/polyvox
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Initial work on progressive mesh generation. Currently based on Stan Melax's PolyChop.

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This commit is contained in:
David Williams
2009-10-20 22:02:58 +00:00
parent 5eb538e925
commit c695a7bc86
16 changed files with 1006 additions and 26 deletions
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10
examples/OpenGL/OpenGLVertexBufferObjectSupport.cpp
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@ -11,6 +11,9 @@ OpenGLSurfacePatch BuildOpenGLSurfacePatch(const IndexedSurfacePatch& isp)
//Represents our filled in OpenGL vertex and index buffer objects.
OpenGLSurfacePatch result;
//The source
result.sourceISP = &isp;
//Convienient access to the vertices and indices
const vector<SurfaceVertex>& vecVertices = isp.getVertices();
const vector<PolyVox::uint32_t>& vecIndices = isp.getIndices();
@ -74,8 +77,10 @@ OpenGLSurfacePatch BuildOpenGLSurfacePatch(const IndexedSurfacePatch& isp)
return result;
}
void renderRegionVertexBufferObject(const OpenGLSurfacePatch& openGLSurfacePatch)
void renderRegionVertexBufferObject(const OpenGLSurfacePatch& openGLSurfacePatch, unsigned int uLodLevel)
{
int beginIndex = openGLSurfacePatch.sourceISP->m_vecLodRecords[uLodLevel].beginIndex;
int endIndex = openGLSurfacePatch.sourceISP->m_vecLodRecords[uLodLevel].endIndex;
glBindBuffer(GL_ARRAY_BUFFER, openGLSurfacePatch.vertexBuffer);
glVertexPointer(3, GL_FLOAT, 36, 0);
glNormalPointer(GL_FLOAT, 36, (GLvoid*)12);
@ -87,7 +92,8 @@ void renderRegionVertexBufferObject(const OpenGLSurfacePatch& openGLSurfacePatch
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glDrawElements(GL_TRIANGLES, openGLSurfacePatch.noOfIndices, GL_UNSIGNED_INT, 0);
//glDrawElements(GL_TRIANGLES, openGLSurfacePatch.noOfIndices, GL_UNSIGNED_INT, 0);
glDrawRangeElements(GL_TRIANGLES, beginIndex, endIndex-1, endIndex - beginIndex,/* openGLSurfacePatch.noOfIndices,*/ GL_UNSIGNED_INT, 0);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);