void OpenGLBatch::draw(){
unsigned int i, nFormats = formats.getCount();
if (GL_ARB_vertex_buffer_object_supported && vertexBuffer != 0){
glBindBufferARB(GL_ARRAY_BUFFER_ARB, vertexBuffer);
}
for (i = 0; i < nFormats; i++){
Format format = formats[i];
GLenum type = getGLType(format.attFormat);
GLenum array = arrayType[format.attType];
char *basePointer = (vertexBuffer != 0)? NULL : vertices;
switch (format.attType){
case ATT_VERTEX:
glVertexPointer(format.size, type, vertexSize, basePointer + format.offset);
break;
case ATT_NORMAL:
glNormalPointer(type, vertexSize, basePointer + format.offset);
break;
case ATT_TEXCOORD:
glClientActiveTextureARB(GL_TEXTURE0_ARB + format.index);
glTexCoordPointer(format.size, type, vertexSize, basePointer + format.offset);
break;
case ATT_COLOR:
glColorPointer(format.size, type, vertexSize, basePointer + format.offset);
break;
}
glEnableClientState(array);
}
if (nIndices == 0){
glDrawArrays(getGLPrimitive(primitiveType), 0, nVertices);
} else {
if (indexBuffer != 0) glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, indexBuffer);
glDrawElements(getGLPrimitive(primitiveType), nIndices, indexSize == 2? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (indexBuffer != 0)? NULL : indices);
if (indexBuffer != 0) glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
}
for (i = 0; i < nFormats; i++){
if (formats[i].attType == ATT_TEXCOORD){
glClientActiveTextureARB(GL_TEXTURE0_ARB + formats[i].index);
}
glDisableClientState(arrayType[formats[i].attType]);
}
if (GL_ARB_vertex_buffer_object_supported && vertexBuffer != 0){
glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
}
}
boost::shared_ptr<StaticGeometry> Renderer::createStaticGeometry(const boost::shared_ptr<VertexListInterface>& spVertexList, Geometry::PrimitiveType ePrimitiveType)
{
LOG_VERBOSE << "Creating static geometry hardware buffers";
// Create VAO
unsigned int uVAO = ~0;
glGenVertexArrays(1, &uVAO);
glBindVertexArray(uVAO);
// Create vertex buffer (VBO)
unsigned int uVBO = ~0;
glGenBuffers(1, &uVBO);
glBindBuffer(GL_ARRAY_BUFFER, uVBO);
glBufferData(GL_ARRAY_BUFFER, spVertexList->getVertexBufferSize(), spVertexList->getVertexBufferData(), GL_STATIC_DRAW);
// Set vertex attribute layouts
auto spVertexLayout = spVertexList->getVertexLayout();
int iVertexSize = spVertexList->getVertexSize();
auto aAttributes = spVertexLayout->getAttributes();
boost::for_each(aAttributes, [iVertexSize](const VertexAttribute& va) {
glVertexAttribPointer(va.iIndex, va.iNumElements, getGLType(va.eType), getGLBool(va.bNormalized), iVertexSize, (const GLvoid*)va.iOffset);
glEnableVertexAttribArray(va.iIndex);
});
// Create index buffer
unsigned int uIB = ~0;
glGenBuffers(1, &uIB);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, uIB);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, spVertexList->getIndexBufferSize(), spVertexList->getIndexBufferData(), GL_STATIC_DRAW);
// Unbind VAO
glBindVertexArray(0);
LOG_VERBOSE << "Successfully created static geometry hardware buffers";
return boost::shared_ptr<StaticGeometry>(new StaticGeometry(uVAO, uVBO, uIB, ePrimitiveType, spVertexList));
}
