Merge pull request #38629 from Technohacker/windows-dwm-ppt-3.2
Use DwmEnableBlurBehindWindow for Windows Per Pixel Transparency
This commit is contained in:
commit
5d26836c78
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@ -247,10 +247,6 @@ public:
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virtual bool get_window_per_pixel_transparency_enabled() const { return false; }
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virtual void set_window_per_pixel_transparency_enabled(bool p_enabled) {}
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virtual uint8_t *get_layered_buffer_data() { return NULL; }
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virtual Size2 get_layered_buffer_size() { return Size2(0, 0); }
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virtual void swap_layered_buffer() {}
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virtual void set_ime_active(const bool p_active) {}
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virtual void set_ime_position(const Point2 &p_pos) {}
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virtual Point2 get_ime_selection() const { return Point2(); }
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@ -448,18 +448,7 @@ void RasterizerGLES2::output_lens_distorted_to_screen(RID p_render_target, const
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void RasterizerGLES2::end_frame(bool p_swap_buffers) {
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if (OS::get_singleton()->is_layered_allowed()) {
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if (OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
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#if (defined WINDOWS_ENABLED) && !(defined UWP_ENABLED)
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Size2 wndsize = OS::get_singleton()->get_layered_buffer_size();
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uint8_t *data = OS::get_singleton()->get_layered_buffer_data();
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if (data) {
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glReadPixels(0, 0, wndsize.x, wndsize.y, GL_BGRA, GL_UNSIGNED_BYTE, data);
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OS::get_singleton()->swap_layered_buffer();
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return;
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}
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#endif
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} else {
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if (!OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
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//clear alpha
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glColorMask(false, false, false, true);
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glClearColor(0, 0, 0, 1);
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@ -372,18 +372,7 @@ void RasterizerGLES3::output_lens_distorted_to_screen(RID p_render_target, const
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void RasterizerGLES3::end_frame(bool p_swap_buffers) {
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if (OS::get_singleton()->is_layered_allowed()) {
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if (OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
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#if (defined WINDOWS_ENABLED) && !(defined UWP_ENABLED)
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Size2 wndsize = OS::get_singleton()->get_layered_buffer_size();
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uint8_t *data = OS::get_singleton()->get_layered_buffer_data();
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if (data) {
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glReadPixels(0, 0, wndsize.x, wndsize.y, GL_BGRA, GL_UNSIGNED_BYTE, data);
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OS::get_singleton()->swap_layered_buffer();
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return;
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}
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#endif
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} else {
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if (!OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
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//clear alpha
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glColorMask(false, false, false, true);
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glClearColor(0, 0, 0, 1);
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@ -2661,7 +2661,6 @@ void OS_OSX::set_window_per_pixel_transparency_enabled(bool p_enabled) {
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if (!is_layered_allowed()) return;
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if (layered_window != p_enabled) {
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if (p_enabled) {
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set_borderless_window(true);
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GLint opacity = 0;
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[window_object setBackgroundColor:[NSColor clearColor]];
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[window_object setOpaque:NO];
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@ -2691,9 +2690,6 @@ void OS_OSX::set_borderless_window(bool p_borderless) {
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if (p_borderless) {
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[window_object setStyleMask:NSWindowStyleMaskBorderless];
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} else {
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if (layered_window)
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set_window_per_pixel_transparency_enabled(false);
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[window_object setStyleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskMiniaturizable | (resizable ? NSWindowStyleMaskResizable : 0)];
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// Force update of the window styles
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@ -974,27 +974,6 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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maximized = false;
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minimized = false;
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}
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if (is_layered_allowed() && layered_window) {
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DeleteObject(hBitmap);
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RECT r;
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GetWindowRect(hWnd, &r);
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dib_size = Size2i(r.right - r.left, r.bottom - r.top);
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BITMAPINFO bmi;
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ZeroMemory(&bmi, sizeof(BITMAPINFO));
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bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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bmi.bmiHeader.biWidth = dib_size.x;
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bmi.bmiHeader.biHeight = dib_size.y;
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bmi.bmiHeader.biPlanes = 1;
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bmi.bmiHeader.biBitCount = 32;
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bmi.bmiHeader.biCompression = BI_RGB;
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bmi.bmiHeader.biSizeImage = dib_size.x * dib_size.y * 4;
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hBitmap = CreateDIBSection(hDC_dib, &bmi, DIB_RGB_COLORS, (void **)&dib_data, NULL, 0x0);
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SelectObject(hDC_dib, hBitmap);
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ZeroMemory(dib_data, dib_size.x * dib_size.y * 4);
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}
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//return 0; // Jump Back
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} break;
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@ -2231,86 +2210,34 @@ void OS_Windows::set_window_per_pixel_transparency_enabled(bool p_enabled) {
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if (!is_layered_allowed()) return;
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if (layered_window != p_enabled) {
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if (p_enabled) {
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set_borderless_window(true);
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//enable per-pixel alpha
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hDC_dib = CreateCompatibleDC(GetDC(hWnd));
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SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) | WS_EX_LAYERED);
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RECT r;
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GetWindowRect(hWnd, &r);
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dib_size = Size2(r.right - r.left, r.bottom - r.top);
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BITMAPINFO bmi;
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ZeroMemory(&bmi, sizeof(BITMAPINFO));
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bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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bmi.bmiHeader.biWidth = dib_size.x;
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bmi.bmiHeader.biHeight = dib_size.y;
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bmi.bmiHeader.biPlanes = 1;
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bmi.bmiHeader.biBitCount = 32;
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bmi.bmiHeader.biCompression = BI_RGB;
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bmi.bmiHeader.biSizeImage = dib_size.x * dib_size.y * 4;
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hBitmap = CreateDIBSection(hDC_dib, &bmi, DIB_RGB_COLORS, (void **)&dib_data, NULL, 0x0);
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SelectObject(hDC_dib, hBitmap);
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ZeroMemory(dib_data, dib_size.x * dib_size.y * 4);
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DWM_BLURBEHIND bb = { 0 };
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HRGN hRgn = CreateRectRgn(0, 0, -1, -1);
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bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
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bb.hRgnBlur = hRgn;
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bb.fEnable = TRUE;
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DwmEnableBlurBehindWindow(hWnd, &bb);
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layered_window = true;
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} else {
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//disable per-pixel alpha
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layered_window = false;
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SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) & ~WS_EX_LAYERED);
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//cleanup
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DeleteObject(hBitmap);
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DeleteDC(hDC_dib);
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DWM_BLURBEHIND bb = { 0 };
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HRGN hRgn = CreateRectRgn(0, 0, -1, -1);
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bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
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bb.hRgnBlur = hRgn;
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bb.fEnable = FALSE;
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DwmEnableBlurBehindWindow(hWnd, &bb);
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}
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}
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}
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uint8_t *OS_Windows::get_layered_buffer_data() {
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return (is_layered_allowed() && layered_window) ? dib_data : NULL;
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}
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Size2 OS_Windows::get_layered_buffer_size() {
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return (is_layered_allowed() && layered_window) ? dib_size : Size2();
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}
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void OS_Windows::swap_layered_buffer() {
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if (is_layered_allowed() && layered_window) {
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//premultiply alpha
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for (int y = 0; y < dib_size.y; y++) {
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for (int x = 0; x < dib_size.x; x++) {
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float alpha = (float)dib_data[y * (int)dib_size.x * 4 + x * 4 + 3] / (float)0xFF;
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dib_data[y * (int)dib_size.x * 4 + x * 4 + 0] *= alpha;
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dib_data[y * (int)dib_size.x * 4 + x * 4 + 1] *= alpha;
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dib_data[y * (int)dib_size.x * 4 + x * 4 + 2] *= alpha;
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}
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}
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//swap layered window buffer
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POINT ptSrc = { 0, 0 };
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SIZE sizeWnd = { (long)dib_size.x, (long)dib_size.y };
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BLENDFUNCTION bf;
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bf.BlendOp = AC_SRC_OVER;
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bf.BlendFlags = 0;
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bf.AlphaFormat = AC_SRC_ALPHA;
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bf.SourceConstantAlpha = 0xFF;
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UpdateLayeredWindow(hWnd, NULL, NULL, &sizeWnd, hDC_dib, &ptSrc, 0, &bf, ULW_ALPHA);
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}
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}
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void OS_Windows::set_borderless_window(bool p_borderless) {
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if (video_mode.borderless_window == p_borderless)
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return;
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if (!p_borderless && layered_window)
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set_window_per_pixel_transparency_enabled(false);
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video_mode.borderless_window = p_borderless;
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preserve_window_size = true;
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@ -3477,7 +3404,6 @@ OS_Windows::OS_Windows(HINSTANCE _hInstance) {
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drop_events = false;
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key_event_pos = 0;
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layered_window = false;
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hBitmap = NULL;
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force_quit = false;
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alt_mem = false;
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gr_mem = false;
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@ -3534,11 +3460,6 @@ OS_Windows::~OS_Windows() {
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wintab_WTClose(wtctx);
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wtctx = 0;
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}
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if (is_layered_allowed() && layered_window) {
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DeleteObject(hBitmap);
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DeleteDC(hDC_dib);
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}
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#ifdef STDOUT_FILE
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fclose(stdo);
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#endif
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@ -49,6 +49,7 @@
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#include "drivers/xaudio2/audio_driver_xaudio2.h"
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#endif
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#include <dwmapi.h>
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#include <fcntl.h>
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#include <io.h>
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#include <stdio.h>
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@ -297,10 +298,6 @@ class OS_Windows : public OS {
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HWND hWnd;
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Point2 last_pos;
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HBITMAP hBitmap; //DIB section for layered window
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uint8_t *dib_data;
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Size2 dib_size;
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HDC hDC_dib;
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bool layered_window;
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uint32_t move_timer_id;
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@ -452,10 +449,6 @@ public:
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virtual bool get_window_per_pixel_transparency_enabled() const;
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virtual void set_window_per_pixel_transparency_enabled(bool p_enabled);
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virtual uint8_t *get_layered_buffer_data();
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virtual Size2 get_layered_buffer_size();
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virtual void swap_layered_buffer();
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virtual Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false);
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virtual Error close_dynamic_library(void *p_library_handle);
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virtual Error get_dynamic_library_symbol_handle(void *p_library_handle, const String p_name, void *&p_symbol_handle, bool p_optional = false);
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@ -964,7 +964,6 @@ void OS_X11::set_window_per_pixel_transparency_enabled(bool p_enabled) {
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if (!is_layered_allowed()) return;
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if (layered_window != p_enabled) {
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if (p_enabled) {
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set_borderless_window(true);
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layered_window = true;
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} else {
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layered_window = false;
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@ -1683,9 +1682,6 @@ void OS_X11::set_borderless_window(bool p_borderless) {
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if (get_borderless_window() == p_borderless)
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return;
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if (!p_borderless && layered_window)
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set_window_per_pixel_transparency_enabled(false);
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current_videomode.borderless_window = p_borderless;
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Hints hints;
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