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Fix: window rendering on non-default DPI scales #15

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Fix: window rendering on non-default DPI scales #15

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3730196
build: set CMAKE_POLICY_VERSION_MINIMUM before fetching deps so glew …
BambooFury Jul 5, 2026
c306955
fix: force DWM frame recomposition after showing borderless window on…
BambooFury Jul 5, 2026
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4 changes: 4 additions & 0 deletions resources/cmake/bootstrap_deps.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,10 @@ set(JSON_Install OFF CACHE BOOL "" FORCE)
# FetchContent declarations
# ============================================================================
include(FetchContent)
# CMake 4.x rejects cmake_minimum_required < 3.5 declared by glew-cmake 2.2.0.
# The in-place patch below runs too late (after FetchContent_MakeAvailable has
# already configured glew), so raise the floor for all fetched deps up front.
set(CMAKE_POLICY_VERSION_MINIMUM 3.5)

set(THIRDPARTY_DIR "${CMAKE_SOURCE_DIR}/thirdparty")
message(STATUS "[Installer] Fetching dependencies...")
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13 changes: 13 additions & 0 deletions src/window/renderer.cc
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Expand Up @@ -51,6 +51,8 @@
#include <thread>
#ifdef _WIN32
#include <windows.h>
#define GLFW_EXPOSE_NATIVE_WIN32
#include <GLFW/glfw3native.h>
#endif

using namespace ImGui;
Expand Down Expand Up @@ -433,6 +435,17 @@ void SpawnRendererThread(GLFWwindow* window, const char* glsl_version, std::shar

if (!hasShown) {
glfwShowWindow(window);
#ifdef _WIN32
// Nudge the outer rect so DWM recomposites the borderless frame; otherwise the
// frame changed while hidden is composited stale on 100% scale displays.
HWND hWnd = glfwGetWin32Window(window);
RECT rect{};
GetWindowRect(hWnd, &rect);
const int w = rect.right - rect.left;
const int h = rect.bottom - rect.top;
SetWindowPos(hWnd, NULL, 0, 0, w + 1, h, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
SetWindowPos(hWnd, NULL, 0, 0, w, h, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
#endif
hasShown = true;
}

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