INNER CODE UNIT · C++
vbo_size
trillek-team/tec · client/imgui-system.cpp:331
vbo_size = needed_vtx_size + 2000 * sizeof(ImDrawVert);
glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)vbo_size, NULL, GL_STREAM_DRAW);
}
unsigned char* vtx_data = (unsigned char*)glMapBufferRange(
GL_ARRAY_BUFFER, 0, needed_vtx_size, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
if (!vtx_data) {
continue;
}
memcpy(vtx_data, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
std::size_t needed_idx_size = cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx);
if (ibo_size < needed_idx_size) {
// Grow our buffer if needed
ibo_size = needed_idx_size + 500 * sizeof(ImDrawIdx);