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Single ImGui context for OpenGL

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Seems only VAO is not shareable between OpenGL context
but that gets recreated every render anyway.
This commit is contained in:
jackun 2020-03-11 12:15:44 +02:00
parent 373bba5fcf
commit bc7db582bd
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GPG Key ID: 119DB3F1D05A9ED3
1 changed files with 7 additions and 33 deletions
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40
src/gl/inject.cpp
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@ -36,17 +36,13 @@ static ImVec2 window_size;
static overlay_params params {};
static swapchain_stats sw_stats {};
static fps_limit fps_limit_stats {};
static state *current_state;
static state state;
static bool inited = false;
std::unordered_map<void*, state> g_imgui_states;
uint32_t vendorID;
std::string deviceName;
void imgui_init()
{
if (inited)
return;
inited = true;
parse_overlay_config(&params, getenv("MANGOHUD_CONFIG"));
window_size = ImVec2(params.width, params.height);
init_system_info();
@ -56,6 +52,9 @@ void imgui_init()
void imgui_create(void *ctx)
{
if (inited)
return;
inited = true;
if (!ctx)
return;
imgui_init();
@ -71,7 +70,6 @@ void imgui_create(void *ctx)
init_gpu_stats(vendorID, params);
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
auto& state = g_imgui_states[ctx];
state.imgui_ctx = ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
@ -104,50 +102,26 @@ void imgui_create(void *ctx)
state.font = io.Fonts->AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_size, &font_cfg, glyph_ranges);
state.font1 = io.Fonts->AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_size * 0.55, &font_cfg, glyph_ranges);
current_state = &state;
engineName = "OpenGL";
}
void imgui_destroy(void *ctx)
{
if (!ctx)
return;
auto it = g_imgui_states.find(ctx);
if (it != g_imgui_states.end()) {
ImGui::DestroyContext(it->second.imgui_ctx);
g_imgui_states.erase(it);
}
}
void imgui_shutdown()
{
std::cerr << __func__ << std::endl;
ImGui_ImplOpenGL3_Shutdown();
for(auto &p : g_imgui_states)
ImGui::DestroyContext(p.second.imgui_ctx);
g_imgui_states.clear();
ImGui::DestroyContext(state.imgui_ctx);
inited = false;
}
void imgui_set_context(void *ctx)
{
if (!ctx) {
imgui_shutdown();
current_state = nullptr;
return;
}
std::cerr << __func__ << std::endl;
auto it = g_imgui_states.find(ctx);
if (it != g_imgui_states.end()) {
ImGui::SetCurrentContext(it->second.imgui_ctx);
current_state = &it->second;
} else {
imgui_create(ctx);
}
sw_stats.font1 = current_state->font1;
imgui_create(ctx);
}
void imgui_render()