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authorGravatar James Ross-Gowan <rossymiles@gmail.com>2016-05-30 19:40:10 +1000
committerGravatar James Ross-Gowan <rossymiles@gmail.com>2016-06-07 18:41:47 +1000
commita9150a49d7dabd2e6a39ed5051587012e24fa8b8 (patch)
treeeed407d3235cb42884d39e2c66b6aecd0eb04fdd
parentb3e74f652ba5edd6f7d78cb17ea35395bf6c4a33 (diff)
vo_opengl: angle: prevent DXGI hooking Alt+Enter
When ANGLE is using D3D11 and not running in DirectComposition mode, DXGI will hook the video window's message loop and override Alt+Enter to trigger a transition to exclusive fullscreen mode (which doesn't even work with mpv's renderer for some reason.) This behaviour can be disabled by getting a pointer to the IDXGIFactory associated with the D3D11 device and calling MakeWindowAssociation with the appropriate flags.
-rw-r--r--video/out/opengl/context_angle.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/video/out/opengl/context_angle.c b/video/out/opengl/context_angle.c
index cc8617cbf1..cc14fc32c6 100644
--- a/video/out/opengl/context_angle.c
+++ b/video/out/opengl/context_angle.c
@@ -18,6 +18,8 @@
#include <windows.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
+#include <d3d11.h>
+#include <dxgi.h>
#include "angle_dynamic.h"
@@ -101,6 +103,74 @@ static bool create_context_egl(MPGLContext *ctx, EGLConfig config, int version)
return true;
}
+static void d3d_init(struct MPGLContext *ctx)
+{
+ HRESULT hr;
+ struct priv *p = ctx->priv;
+ struct vo *vo = ctx->vo;
+ IDXGIDevice *dxgi_dev = NULL;
+ IDXGIAdapter *dxgi_adapter = NULL;
+ IDXGIFactory *dxgi_factory = NULL;
+
+ PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT =
+ (PFNEGLQUERYDISPLAYATTRIBEXTPROC)eglGetProcAddress("eglQueryDisplayAttribEXT");
+ PFNEGLQUERYDEVICEATTRIBEXTPROC eglQueryDeviceAttribEXT =
+ (PFNEGLQUERYDEVICEATTRIBEXTPROC)eglGetProcAddress("eglQueryDeviceAttribEXT");
+ if (!eglQueryDisplayAttribEXT || !eglQueryDeviceAttribEXT) {
+ MP_VERBOSE(vo, "Missing EGL_EXT_device_query\n");
+ goto done;
+ }
+
+ EGLAttrib dev_attr;
+ if (!eglQueryDisplayAttribEXT(p->egl_display, EGL_DEVICE_EXT, &dev_attr)) {
+ MP_VERBOSE(vo, "Missing EGL_EXT_device_query\n");
+ goto done;
+ }
+
+ // If ANGLE is in D3D11 mode, get the underlying ID3D11Device
+ EGLDeviceEXT dev = (EGLDeviceEXT)dev_attr;
+ EGLAttrib d3d11_dev_attr;
+ if (eglQueryDeviceAttribEXT(dev, EGL_D3D11_DEVICE_ANGLE, &d3d11_dev_attr)) {
+ ID3D11Device *d3d11_dev = (ID3D11Device*)d3d11_dev_attr;
+
+ hr = ID3D11Device_QueryInterface(d3d11_dev, &IID_IDXGIDevice,
+ (void**)&dxgi_dev);
+ if (FAILED(hr)) {
+ MP_ERR(vo, "Device is not a IDXGIDevice\n");
+ goto done;
+ }
+
+ hr = IDXGIDevice_GetAdapter(dxgi_dev, &dxgi_adapter);
+ if (FAILED(hr)) {
+ MP_ERR(vo, "Couldn't get IDXGIAdapter\n");
+ goto done;
+ }
+
+ hr = IDXGIAdapter_GetParent(dxgi_adapter, &IID_IDXGIFactory,
+ (void**)&dxgi_factory);
+ if (FAILED(hr)) {
+ MP_ERR(vo, "Couldn't get IDXGIFactory\n");
+ goto done;
+ }
+
+ // Prevent DXGI from making changes to the VO window, otherwise in
+ // non-DirectComposition mode it will hook the Alt+Enter keystroke and
+ // make it trigger an ugly transition to exclusive fullscreen mode
+ // instead of running the user-set command.
+ IDXGIFactory_MakeWindowAssociation(dxgi_factory, vo_w32_hwnd(vo),
+ DXGI_MWA_NO_WINDOW_CHANGES | DXGI_MWA_NO_ALT_ENTER |
+ DXGI_MWA_NO_PRINT_SCREEN);
+ }
+
+done:
+ if (dxgi_dev)
+ IDXGIDevice_Release(dxgi_dev);
+ if (dxgi_adapter)
+ IDXGIAdapter_Release(dxgi_adapter);
+ if (dxgi_factory)
+ IDXGIFactory_Release(dxgi_factory);
+}
+
static void *get_proc_address(const GLubyte *proc_name)
{
return eglGetProcAddress(proc_name);
@@ -215,6 +285,9 @@ static int angle_init(struct MPGLContext *ctx, int flags)
goto fail;
}
+ // Configure the underlying Direct3D device
+ d3d_init(ctx);
+
mpgl_load_functions(ctx->gl, get_proc_address, NULL, vo->log);
return 0;