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Extract Win32 async render context state

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This commit is contained in:
omigamedev
2026-06-17 11:19:56 +02:00
parent 949dbf778a
commit 45f3d501e7
7 changed files with 108 additions and 75 deletions
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82
src/platform_windows/windows_async_render_context.cpp Normal file
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@@ -0,0 +1,82 @@
#include "pch.h"
#include "platform_windows/windows_async_render_context.h"
#include "log.h"
#include "platform_windows/windows_bootstrap_helpers.h"
namespace pp::platform::windows {
namespace {
struct RetainedWin32AsyncRenderContextState final {
HDC hdc{};
HGLRC hrc{};
std::mutex gl_mutex;
std::thread::id gl_thread{};
int gl_count = 0;
};
[[nodiscard]] RetainedWin32AsyncRenderContextState& retained_win32_async_render_context_state()
{
static RetainedWin32AsyncRenderContextState state;
return state;
}
}
void set_async_render_context(HDC hdc, HGLRC hrc)
{
auto& state = retained_win32_async_render_context_state();
state.hdc = hdc;
state.hrc = hrc;
state.gl_thread = {};
state.gl_count = 0;
}
void lock_async_render_context()
{
auto& state = retained_win32_async_render_context_state();
if (state.gl_count == 0 || state.gl_thread != std::this_thread::get_id())
{
state.gl_mutex.lock();
const bool ret = wglMakeCurrent(state.hdc, state.hrc);
if (!ret)
LOG("FAILED wglMakeCurrent: %s", pp::platform::windows::GetLastErrorAsString().c_str());
state.gl_thread = std::this_thread::get_id();
}
state.gl_count++;
}
bool try_lock_async_render_context()
{
auto& state = retained_win32_async_render_context_state();
if (state.gl_count == 0 || state.gl_thread != std::this_thread::get_id())
{
if (!state.gl_mutex.try_lock())
return false;
const bool ret = wglMakeCurrent(state.hdc, state.hrc);
if (!ret)
LOG("FAILED wglMakeCurrent: %s", pp::platform::windows::GetLastErrorAsString().c_str());
state.gl_thread = std::this_thread::get_id();
}
state.gl_count++;
return true;
}
void unlock_async_render_context()
{
auto& state = retained_win32_async_render_context_state();
state.gl_count--;
if (state.gl_count == 0)
{
wglMakeCurrent(0, 0);
state.gl_mutex.unlock();
}
}
void swap_async_render_context()
{
SwapBuffers(retained_win32_async_render_context_state().hdc);
}
}

13
src/platform_windows/windows_async_render_context.h Normal file
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@@ -0,0 +1,13 @@
#pragma once
#include <windows.h>
namespace pp::platform::windows {
void set_async_render_context(HDC hdc, HGLRC hrc);
void lock_async_render_context();
[[nodiscard]] bool try_lock_async_render_context();
void unlock_async_render_context();
void swap_async_render_context();
}

2
src/platform_windows/windows_bootstrap_helpers.cpp
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@@ -1,6 +1,7 @@
#include "pch.h"
#include "platform_windows/windows_bootstrap_helpers.h"
#include "platform_windows/windows_async_render_context.h"
#include "platform_windows/windows_main_window_session.h"
#include "platform_windows/windows_runtime_shell.h"
#include "platform_windows/windows_window_shell.h"
@@ -25,7 +26,6 @@
#endif
namespace pp::platform::windows {
void set_async_render_context(HDC hdc, HGLRC hrc);
App* bound_app() noexcept;
}

75
src/platform_windows/windows_platform_services.cpp
View File

@@ -1,4 +1,5 @@
#include "pch.h"
#include "platform_windows/windows_async_render_context.h"
#include "platform_windows/windows_bootstrap_helpers.h"
#include "platform_windows/windows_lifecycle_shell.h"
#include "platform_windows/windows_main_window_session.h"
@@ -20,11 +21,6 @@
#include <map>
namespace pp::platform::windows {
void set_async_render_context(HDC hdc, HGLRC hrc);
void lock_async_render_context();
bool try_lock_async_render_context();
void unlock_async_render_context();
void swap_async_render_context();
[[nodiscard]] VrShellState& platform_vr_state() noexcept;
}
@@ -145,77 +141,8 @@ VrShellState& platform_vr_state() noexcept
namespace pp::platform::windows {
namespace {
struct RetainedWin32AsyncRenderContextState final {
HDC hdc{};
HGLRC hrc{};
std::mutex gl_mutex;
std::thread::id gl_thread{};
int gl_count = 0;
};
[[nodiscard]] RetainedWin32AsyncRenderContextState& retained_win32_async_render_context_state()
{
static RetainedWin32AsyncRenderContextState state;
return state;
}
} // namespace
void set_async_render_context(HDC hdc, HGLRC hrc)
{
auto& state = retained_win32_async_render_context_state();
state.hdc = hdc;
state.hrc = hrc;
state.gl_thread = {};
state.gl_count = 0;
}
void lock_async_render_context()
{
auto& state = retained_win32_async_render_context_state();
if (state.gl_count == 0 || state.gl_thread != std::this_thread::get_id())
{
state.gl_mutex.lock();
const bool ret = wglMakeCurrent(state.hdc, state.hrc);
if (!ret)
LOG("FAILED wglMakeCurrent: %s", pp::platform::windows::GetLastErrorAsString().c_str());
state.gl_thread = std::this_thread::get_id();
}
state.gl_count++;
}
bool try_lock_async_render_context()
{
auto& state = retained_win32_async_render_context_state();
if (state.gl_count == 0 || state.gl_thread != std::this_thread::get_id())
{
if (!state.gl_mutex.try_lock())
return false;
const bool ret = wglMakeCurrent(state.hdc, state.hrc);
if (!ret)
LOG("FAILED wglMakeCurrent: %s", pp::platform::windows::GetLastErrorAsString().c_str());
state.gl_thread = std::this_thread::get_id();
}
state.gl_count++;
return true;
}
void unlock_async_render_context()
{
auto& state = retained_win32_async_render_context_state();
state.gl_count--;
if (state.gl_count == 0)
{
wglMakeCurrent(0, 0);
state.gl_mutex.unlock();
}
}
void swap_async_render_context()
{
SwapBuffers(retained_win32_async_render_context_state().hdc);
}
void enqueue_main_thread_task(std::packaged_task<void()> task)
{
if (auto* app = bound_app())