//--------------------------------------------------------------
void ofVbo::setMesh(const ofMesh & mesh, int usage, bool useColors, bool useTextures, bool useNormals){
if(mesh.getVertices().empty()){
ofLogWarning("ofVbo") << "setMesh(): ignoring mesh with no vertices";
return;
}
setVertexData(mesh.getVerticesPointer(),mesh.getNumVertices(),usage);
if(mesh.hasColors() && useColors){
setColorData(mesh.getColorsPointer(),mesh.getNumColors(),usage);
enableColors();
}else{
disableColors();
}
if(mesh.hasNormals() && useNormals){
setNormalData(mesh.getNormalsPointer(),mesh.getNumNormals(),usage);
enableNormals();
}else{
disableNormals();
}
if(mesh.hasTexCoords() && useTextures){
setTexCoordData(mesh.getTexCoordsPointer(),mesh.getNumTexCoords(),usage);
enableTexCoords();
}else{
disableTexCoords();
}
if(mesh.hasIndices()){
setIndexData(mesh.getIndexPointer(), mesh.getNumIndices(), usage);
enableIndices();
}else{
disableIndices();
}
}
//--------------------------------------------------------------
void ofVbo::setNormalData(const float * normal0x, int total, int usage, int stride) {
// tig: note that we set the 'Normalize' flag to true here, assuming that mesh normals need to be
// normalized while being uploaded to GPU memory.
// http://www.opengl.org/sdk/docs/man/xhtml/glVertexAttribPointer.xml
// Normalizing the normals on the shader is probably faster, but sending non-normalized normals is
// more prone to lead to artifacts difficult to diagnose, especially with the built-in 3D primitives.
// If you need to optimise this, and you've dug this far through the code, you are most probably
// able to roll your own client code for binding & rendering vbos anyway...
normalAttribute.setData(normal0x, 3, total, usage, stride);
normalAttribute.normalize = true;
enableNormals();
}
//--------------------------------------------------------------
void ofVbo::setNormalData(const float * normal0x, int total, int usage, int stride) {
if(normalId==0) {
glGenBuffers(1, &(normalId));
retain(normalId);
enableNormals();
}
normUsage = usage;
normalStride = stride==0?3*sizeof(float):stride;
glBindBuffer(GL_ARRAY_BUFFER, normalId);
glBufferData(GL_ARRAY_BUFFER, total * stride, normal0x, usage);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
//--------------------------------------------------------------
void ofVbo::setNormalBuffer(ofBufferObject & buffer, int stride, int offset){
normalAttribute.setBuffer(buffer, 3, stride, offset);
enableNormals();
}