void Model::prepareData(const glm::mat4& world_transform) {
updateUniformData(_rootNode, world_transform);
_nodeUniformData->updateData(_alignedUniformData.getData(),
0,
_alignedUniformData.getSize(),
UpdateFlags::DiscardOldData);
}
void Model::updateUniformData(const ModelNode& node, const glm::mat4& model) {
auto final_transform = model * node.transform;
auto data = _alignedUniformData.getElement(node.index);
data->model_matrix = final_transform;
data->normal_model_matrix = glm::transpose(glm::inverse(final_transform));
for (auto& child : node.child_nodes) {
updateUniformData(*child, final_transform);
}
}
void FlatDrawable::draw(){
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glUseProgram(shader.getGLId());
mesh->bindVAO();
transformation = glm::mat3( width , 0 , position.x,
0 , height, position.y,
0 , 0 , 1 );
glUniformMatrix3fv(glGetUniformLocation(shader.getGLId(), "transformation"), 1, GL_FALSE, glm::value_ptr(transformation));
updateUniformData();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture.getGLId());
mesh->draw();
}