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Add a EGL renderer (via ANGLE) for Windows

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This is for adding a EGL-based renderer which is done via the ANGLE
project, which translate EGL calls to Direct3D 9/11.  This is done as a
possible solution to issue #105, especially for cases where the needed
full GL extensions to map OpenGL to Direct3D is unavailable or
unreliable, or when the OpenGL implementation from the graphics drivers
are problematic.

To enable this, do the following:
-Build ANGLE and ensure the ANGLE libEGL.dll and libGLESv2.dll are
 available.  A sufficiently-recent ANGLE is needed for things to
 work correctly--note that the copy of ANGLE that is included in
 qtbase-5.10.1 is sufficient.  ANGLE is licensed under a BSD 3-clause
 license.
-Build libepoxy on Windows with EGL support enabled.
-Currently, prior to running GTK+ programs, the GDK_DEBUG envvar needs
 to be set with gl-gles as at least one of the flags.

Known issues:
-Only OpenGL ES 3 is supported, ANGLE's ES 2 does not support the needed
 extensions, notably GL_OES_vertex_array_object, but its ES 3 support is
 sufficient.
-There is no autodetection or fallback mechanism to enable using
 EGL/Angle automatically yet.  There are no plans to do this in this
 commit.
This commit is contained in:
Chun-wei Fan 2018-07-31 18:11:26 +08:00
parent 12a23162b3
commit 257fd990d1
8 changed files with 698 additions and 155 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gdk/gdkglcontext.c
View File

@ -993,11 +993,14 @@ gdk_gl_context_check_extensions (GdkGLContext *context)
has_npot = priv->gl_version >= 20;
has_texture_rectangle = FALSE;
/* This should check for GL_NV_framebuffer_blit - see extension at:
/* This should check for GL_NV_framebuffer_blit as well - see extension at:
*
* https://www.khronos.org/registry/gles/extensions/NV/NV_framebuffer_blit.txt
*
* for ANGLE, we can enable bit blitting if we have the
* GL_ANGLE_framebuffer_blit extension
*/
priv->has_gl_framebuffer_blit = FALSE;
priv->has_gl_framebuffer_blit = epoxy_has_gl_extension ("GL_ANGLE_framebuffer_blit");
/* No OES version */
priv->has_frame_terminator = FALSE;

11
gdk/win32/gdkdisplay-win32.c
View File

@ -39,6 +39,9 @@
#include <dwmapi.h>
#include "gdkwin32langnotification.h"
#ifdef GDK_WIN32_ENABLE_EGL
# include <epoxy/egl.h>
#endif
static int debug_indent = 0;
@ -641,6 +644,14 @@ gdk_win32_display_dispose (GObject *object)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (object);
#ifdef GDK_WIN32_ENABLE_EGL
if (display_win32->egl_disp != EGL_NO_DISPLAY)
{
eglTerminate (display_win32->egl_disp);
display_win32->egl_disp = EGL_NO_DISPLAY;
}
#endif
if (display_win32->hwnd != NULL)
{
DestroyWindow (display_win32->hwnd);

18
gdk/win32/gdkdisplay-win32.h
View File

@ -24,6 +24,10 @@
#include "gdkwin32screen.h"
#include "gdkwin32cursor.h"
#ifdef GDK_WIN32_ENABLE_EGL
# include <epoxy/egl.h>
#endif
/* Define values used to set DPI-awareness */
typedef enum _GdkWin32ProcessDpiAwareness {
@ -82,6 +86,14 @@ struct _GdkWin32Display
guint gl_version;
HWND gl_hwnd;
#ifdef GDK_WIN32_ENABLE_EGL
/* EGL (Angle) Items */
guint have_egl : 1;
guint egl_version;
EGLDisplay egl_disp;
HDC hdc_egl_temp;
#endif
GListModel *monitors;
guint hasWglARBCreateContext : 1;
@ -90,6 +102,12 @@ struct _GdkWin32Display
guint hasWglARBPixelFormat : 1;
guint hasWglARBmultisample : 1;
#ifdef GDK_WIN32_ENABLE_EGL
guint hasEglKHRCreateContext : 1;
guint hasEglSurfacelessContext : 1;
EGLint egl_min_swap_interval;
#endif
/* HiDPI Items */
guint have_at_least_win81 : 1;
GdkWin32ProcessDpiAwareness dpi_aware_type;

7
gdk/win32/gdkevents-win32.c
View File

@ -51,6 +51,7 @@
#include "gdkmonitorprivate.h"
#include "gdkwin32.h"
#include "gdkkeysyms.h"
#include "gdkglcontext-win32.h"
#include "gdkdevicemanager-win32.h"
#include "gdkdisplay-win32.h"
#include "gdkdeviceprivate.h"
@ -2945,7 +2946,11 @@ gdk_event_translate (MSG *msg,
{
case SC_MINIMIZE:
case SC_RESTORE:
do_show_window (window, msg->wParam == SC_MINIMIZE ? TRUE : FALSE);
do_show_window (window, msg->wParam == SC_MINIMIZE ? TRUE : FALSE);
if (msg->wParam == SC_RESTORE)
_gdk_win32_surface_invalidate_egl_framebuffer (window);
break;
case SC_MAXIMIZE:
impl = GDK_WIN32_SURFACE (window);

717
gdk/win32/gdkglcontext-win32.c
View File

@ -41,6 +41,10 @@
#include <cairo.h>
#include <epoxy/wgl.h>
#ifdef GDK_WIN32_ENABLE_EGL
# include <epoxy/egl.h>
#endif
G_DEFINE_TYPE (GdkWin32GLContext, gdk_win32_gl_context, GDK_TYPE_GL_CONTEXT)
static void
@ -51,17 +55,37 @@ _gdk_win32_gl_context_dispose (GObject *gobject)
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (gdk_gl_context_get_display (context));
GdkSurface *surface = gdk_gl_context_get_surface (context);
if (context_win32->hglrc != NULL)
if (display_win32 != NULL)
{
if (wglGetCurrentContext () == context_win32->hglrc)
wglMakeCurrent (NULL, NULL);
if (display_win32->have_wgl)
{
if (wglGetCurrentContext () == context_win32->hglrc)
wglMakeCurrent (NULL, NULL);
GDK_NOTE (OPENGL, g_print ("Destroying WGL context\n"));
GDK_NOTE (OPENGL, g_print ("Destroying WGL context\n"));
wglDeleteContext (context_win32->hglrc);
context_win32->hglrc = NULL;
wglDeleteContext (context_win32->hglrc);
context_win32->hglrc = NULL;
ReleaseDC (display_win32->gl_hwnd, context_win32->gl_hdc);
ReleaseDC (display_win32->gl_hwnd, context_win32->gl_hdc);
}
#ifdef GDK_WIN32_ENABLE_EGL
else if (display_win32->have_egl)
{
if (eglGetCurrentContext () == context_win32->egl_context)
eglMakeCurrent(display_win32->egl_disp, EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
GDK_NOTE (OPENGL, g_message ("Destroying EGL (ANGLE) context"));
eglDestroyContext (display_win32->egl_disp,
context_win32->egl_context);
context_win32->egl_context = EGL_NO_CONTEXT;
ReleaseDC (display_win32->gl_hwnd, context_win32->gl_hdc);
}
#endif
}
if (surface != NULL)
@ -77,7 +101,6 @@ _gdk_win32_gl_context_dispose (GObject *gobject)
if (impl->suppress_layered == 0)
_gdk_win32_surface_update_style_bits (surface);
}
G_OBJECT_CLASS (gdk_win32_gl_context_parent_class)->dispose (gobject);
}
@ -100,6 +123,33 @@ gdk_gl_blit_region (GdkSurface *surface, cairo_region_t *region)
}
}
#ifdef GDK_WIN32_ENABLE_EGL
static gboolean
_get_is_egl_force_redraw (GdkSurface *surface)
{
/* We only need to call gdk_window_invalidate_rect () if necessary */
if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
{
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
return impl->egl_force_redraw_all;
}
return FALSE;
}
static void
_reset_egl_force_redraw (GdkSurface *surface)
{
if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
{
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
if (impl->egl_force_redraw_all)
impl->egl_force_redraw_all = FALSE;
}
}
#endif
static void
gdk_win32_gl_context_end_frame (GdkDrawContext *draw_context,
cairo_region_t *painted)
@ -108,7 +158,6 @@ gdk_win32_gl_context_end_frame (GdkDrawContext *draw_context,
GdkWin32GLContext *context_win32 = GDK_WIN32_GL_CONTEXT (context);
GdkSurface *surface = gdk_gl_context_get_surface (context);
GdkWin32Display *display = (GDK_WIN32_DISPLAY (gdk_gl_context_get_display (context)));
gboolean can_wait = display->hasWglOMLSyncControl;
cairo_rectangle_int_t whole_window;
GDK_DRAW_CONTEXT_CLASS (gdk_win32_gl_context_parent_class)->end_frame (draw_context, painted);
@ -116,9 +165,12 @@ gdk_win32_gl_context_end_frame (GdkDrawContext *draw_context,
return;
gdk_gl_context_make_current (context);
whole_window = (GdkRectangle) { 0, 0, gdk_surface_get_width (surface), gdk_surface_get_height (surface) };
if (context_win32->do_frame_sync)
if (!gdk_gl_context_get_use_es (context))
{
gboolean can_wait = display->hasWglOMLSyncControl;
if (context_win32->do_frame_sync)
{
glFinish ();
@ -135,29 +187,48 @@ gdk_win32_gl_context_end_frame (GdkDrawContext *draw_context,
&ust, &msc, &sbc);
}
}
}
whole_window = (GdkRectangle) { 0, 0, gdk_surface_get_width (surface), gdk_surface_get_height (surface) };
if (cairo_region_contains_rectangle (painted, &whole_window) == CAIRO_REGION_OVERLAP_IN)
{
SwapBuffers (context_win32->gl_hdc);
}
else if (gdk_gl_context_has_framebuffer_blit (context))
{
glDrawBuffer(GL_FRONT);
glReadBuffer(GL_BACK);
gdk_gl_blit_region (surface, painted);
glDrawBuffer(GL_BACK);
glFlush();
if (cairo_region_contains_rectangle (painted, &whole_window) == CAIRO_REGION_OVERLAP_IN)
SwapBuffers (context_win32->gl_hdc);
else if (gdk_gl_context_has_framebuffer_blit (context))
{
glDrawBuffer(GL_FRONT);
glReadBuffer(GL_BACK);
gdk_gl_blit_region (surface, painted);
glDrawBuffer(GL_BACK);
glFlush();
if (gdk_gl_context_has_frame_terminator (context))
glFrameTerminatorGREMEDY ();
if (gdk_gl_context_has_frame_terminator (context))
glFrameTerminatorGREMEDY ();
}
else
{
g_warning ("Need to swap whole buffer even thouigh not everything was redrawn. Expect artifacts.");
SwapBuffers (context_win32->gl_hdc);
}
}
#ifdef GDK_WIN32_ENABLE_EGL
else
{
g_warning ("Need to swap whole buffer even thouigh not everything was redrawn. Expect artifacts.");
SwapBuffers (context_win32->gl_hdc);
EGLSurface egl_surface = _gdk_win32_surface_get_egl_surface (surface, context_win32->egl_config, FALSE);
gboolean force_egl_redraw_all = _get_is_egl_force_redraw (surface);
if (!force_egl_redraw_all)
gdk_gl_blit_region (surface, painted);
else if (force_egl_redraw_all)
{
GdkRectangle rect = {0, 0, gdk_surface_get_width (surface), gdk_surface_get_height (surface)};
/* We need to do gdk_window_invalidate_rect() so that we don't get glitches after maximizing or
* restoring or using aerosnap
*/
gdk_surface_invalidate_rect (surface, &rect);
_reset_egl_force_redraw (surface);
}
eglSwapBuffers (display->egl_disp, egl_surface);
}
#endif
}
static void
@ -415,61 +486,150 @@ _gdk_init_dummy_context (GdkWGLDummy *dummy)
return best_idx;
}
#ifdef GDK_WIN32_ENABLE_EGL
#ifndef EGL_PLATFORM_ANGLE_ANGLE
#define EGL_PLATFORM_ANGLE_ANGLE 0x3202
#endif
#ifndef EGL_PLATFORM_ANGLE_TYPE_ANGLE
#define EGL_PLATFORM_ANGLE_TYPE_ANGLE 0x3203
#endif
#ifndef EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE
#define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE 0x3208
#endif
static EGLDisplay
_gdk_win32_get_egl_display (GdkWin32Display *display)
{
EGLDisplay disp;
gboolean success = FALSE;
if (epoxy_has_egl_extension (NULL, "EGL_EXT_platform_base"))
{
PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplay = (void *) eglGetProcAddress ("eglGetPlatformDisplayEXT");
if (getPlatformDisplay)
{
EGLint disp_attr[] = {EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE, EGL_NONE};
disp = getPlatformDisplay (EGL_PLATFORM_ANGLE_ANGLE, display->hdc_egl_temp, disp_attr);
if (disp != EGL_NO_DISPLAY)
return disp;
}
}
return eglGetDisplay (display->hdc_egl_temp);
}
#endif
static gboolean
_gdk_win32_display_init_gl (GdkDisplay *display)
{
GdkWin32Display *display_win32 = GDK_WIN32_DISPLAY (display);
int best_idx = 0;
GdkWGLDummy dummy;
if (display_win32->have_wgl)
gboolean disable_wgl = FALSE;
#ifdef GDK_WIN32_ENABLE_EGL
EGLDisplay egl_disp;
disable_wgl = GDK_DISPLAY_DEBUG_CHECK (display, GL_GLES);
#endif
if (display_win32->have_wgl
#ifdef GDK_WIN32_ENABLE_EGL
|| display_win32->have_egl
#endif
)
return TRUE;
memset (&dummy, 0, sizeof (GdkWGLDummy));
if (!disable_wgl)
{
GdkWGLDummy dummy;
memset (&dummy, 0, sizeof (GdkWGLDummy));
/* acquire and cache dummy Window (HWND & HDC) and
* dummy GL Context, it is used to query functions
* and used for other stuff as well
*/
best_idx = _gdk_init_dummy_context (&dummy);
/* acquire and cache dummy Window (HWND & HDC) and
* dummy GL Context, it is used to query functions
* and used for other stuff as well
*/
best_idx = _gdk_init_dummy_context (&dummy);
if (best_idx == 0 || !wglMakeCurrent (dummy.hdc, dummy.hglrc))
return FALSE;
if (best_idx == 0 || !wglMakeCurrent (dummy.hdc, dummy.hglrc))
return FALSE;
display_win32->have_wgl = TRUE;
display_win32->gl_version = epoxy_gl_version ();
display_win32->have_wgl = TRUE;
display_win32->gl_version = epoxy_gl_version ();
display_win32->hasWglARBCreateContext =
epoxy_has_wgl_extension (dummy.hdc, "WGL_ARB_create_context");
display_win32->hasWglEXTSwapControl =
epoxy_has_wgl_extension (dummy.hdc, "WGL_EXT_swap_control");
display_win32->hasWglOMLSyncControl =
epoxy_has_wgl_extension (dummy.hdc, "WGL_OML_sync_control");
display_win32->hasWglARBPixelFormat =
epoxy_has_wgl_extension (dummy.hdc, "WGL_ARB_pixel_format");
display_win32->hasWglARBmultisample =
epoxy_has_wgl_extension (dummy.hdc, "WGL_ARB_multisample");
display_win32->hasWglARBCreateContext =
epoxy_has_wgl_extension (dummy.hdc, "WGL_ARB_create_context");
display_win32->hasWglEXTSwapControl =
epoxy_has_wgl_extension (dummy.hdc, "WGL_EXT_swap_control");
display_win32->hasWglOMLSyncControl =
epoxy_has_wgl_extension (dummy.hdc, "WGL_OML_sync_control");
display_win32->hasWglARBPixelFormat =
epoxy_has_wgl_extension (dummy.hdc, "WGL_ARB_pixel_format");
display_win32->hasWglARBmultisample =
epoxy_has_wgl_extension (dummy.hdc, "WGL_ARB_multisample");
GDK_NOTE (OPENGL,
g_print ("WGL API version %d.%d found\n"
GDK_NOTE (OPENGL,
g_print ("WGL API version %d.%d found\n"
" - Vendor: %s\n"
" - Checked extensions:\n"
"\t* WGL_ARB_pixel_format: %s\n"
"\t* WGL_ARB_create_context: %s\n"
"\t* WGL_EXT_swap_control: %s\n"
"\t* WGL_OML_sync_control: %s\n"
"\t* WGL_ARB_multisample: %s\n",
display_win32->gl_version / 10,
display_win32->gl_version % 10,
glGetString (GL_VENDOR),
display_win32->hasWglARBPixelFormat ? "yes" : "no",
display_win32->hasWglARBCreateContext ? "yes" : "no",
display_win32->hasWglEXTSwapControl ? "yes" : "no",
display_win32->hasWglOMLSyncControl ? "yes" : "no",
display_win32->hasWglARBmultisample ? "yes" : "no"));
wglMakeCurrent (NULL, NULL);
_destroy_dummy_gl_context (dummy);
}
#ifdef GDK_WIN32_ENABLE_EGL
else
{
egl_disp = _gdk_win32_get_egl_display (display_win32);
if (egl_disp == EGL_NO_DISPLAY || !eglInitialize (egl_disp, NULL, NULL))
{
if (egl_disp != EGL_NO_DISPLAY)
{
eglTerminate (egl_disp);
egl_disp = EGL_NO_DISPLAY;
}
return FALSE;
}
display_win32->egl_disp = egl_disp;
display_win32->have_egl = TRUE;
display_win32->egl_version = epoxy_egl_version (egl_disp);
eglBindAPI(EGL_OPENGL_ES_API);
display_win32->hasEglSurfacelessContext =
epoxy_has_egl_extension (egl_disp, "EGL_KHR_surfaceless_context");
GDK_NOTE (OPENGL,
g_print ("EGL API version %d.%d found\n"
" - Vendor: %s\n"
" - Checked extensions:\n"
"\t* WGL_ARB_pixel_format: %s\n"
"\t* WGL_ARB_create_context: %s\n"
"\t* WGL_EXT_swap_control: %s\n"
"\t* WGL_OML_sync_control: %s\n"
"\t* WGL_ARB_multisample: %s\n",
display_win32->gl_version / 10,
display_win32->gl_version % 10,
glGetString (GL_VENDOR),
display_win32->hasWglARBPixelFormat ? "yes" : "no",
display_win32->hasWglARBCreateContext ? "yes" : "no",
display_win32->hasWglEXTSwapControl ? "yes" : "no",
display_win32->hasWglOMLSyncControl ? "yes" : "no",
display_win32->hasWglARBmultisample ? "yes" : "no"));
wglMakeCurrent (NULL, NULL);
_destroy_dummy_gl_context (dummy);
"\t* EGL_KHR_surfaceless_context: %s\n",
display_win32->egl_version / 10,
display_win32->egl_version % 10,
eglQueryString (display_win32->egl_disp, EGL_VENDOR),
display_win32->hasEglSurfacelessContext ? "yes" : "no"));
}
#endif
return TRUE;
}
@ -649,6 +809,122 @@ _set_pixformat_for_hdc (HDC hdc,
return TRUE;
}
#ifdef GDK_WIN32_ENABLE_EGL
#define MAX_EGL_ATTRS 30
static gboolean
find_eglconfig_for_window (GdkWin32Display *display,
EGLConfig *egl_config_out,
EGLint *min_swap_interval_out,
GError **error)
{
EGLint attrs[MAX_EGL_ATTRS];
EGLint count;
EGLConfig *configs, chosen_config;
int i = 0;
EGLDisplay egl_disp = display->egl_disp;
attrs[i++] = EGL_CONFORMANT;
attrs[i++] = EGL_OPENGL_ES2_BIT;
attrs[i++] = EGL_SURFACE_TYPE;
attrs[i++] = EGL_WINDOW_BIT;
attrs[i++] = EGL_COLOR_BUFFER_TYPE;
attrs[i++] = EGL_RGB_BUFFER;
attrs[i++] = EGL_RED_SIZE;
attrs[i++] = 1;
attrs[i++] = EGL_GREEN_SIZE;
attrs[i++] = 1;
attrs[i++] = EGL_BLUE_SIZE;
attrs[i++] = 1;
attrs[i++] = EGL_ALPHA_SIZE;
attrs[i++] = 1;
attrs[i++] = EGL_NONE;
g_assert (i < MAX_EGL_ATTRS);
if (!eglChooseConfig (display->egl_disp, attrs, NULL, 0, &count) || count < 1)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_FORMAT,
_("No available configurations for the given pixel format"));
return FALSE;
}
configs = g_new (EGLConfig, count);
if (!eglChooseConfig (display->egl_disp, attrs, configs, count, &count) || count < 1)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_FORMAT,
_("No available configurations for the given pixel format"));
return FALSE;
}
/* Pick first valid configuration i guess? */
chosen_config = configs[0];
if (!eglGetConfigAttrib (display->egl_disp, chosen_config,
EGL_MIN_SWAP_INTERVAL, min_swap_interval_out))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
"Could not retrieve the minimum swap interval");
g_free (configs);
return FALSE;
}
if (egl_config_out != NULL)
*egl_config_out = chosen_config;
g_free (configs);
return TRUE;
}
#define N_EGL_ATTRS 16
static EGLContext
_create_egl_context (EGLDisplay display,
EGLConfig config,
GdkGLContext *share,
int flags,
int major,
int minor,
gboolean *is_legacy)
{
EGLContext ctx;
EGLint context_attribs[N_EGL_ATTRS];
int i = 0;
/* ANGLE does not support the GL_OES_vertex_array_object extension, so we need to use ES3 directly */
context_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
context_attribs[i++] = 3;
/* Specify the flags */
context_attribs[i++] = EGL_CONTEXT_FLAGS_KHR;
context_attribs[i++] = flags;
context_attribs[i++] = EGL_NONE;
g_assert (i < N_EGL_ATTRS);
ctx = eglCreateContext (display,
config,
share != NULL ? GDK_WIN32_GL_CONTEXT (share)->egl_context
: EGL_NO_CONTEXT,
context_attribs);
if (ctx != EGL_NO_CONTEXT)
GDK_NOTE (OPENGL, g_message ("Created EGL context[%p]", ctx));
return ctx;
}
#endif /* GDK_WIN32_ENABLE_EGL */
static gboolean
gdk_win32_gl_context_realize (GdkGLContext *context,
GError **error)
@ -656,39 +932,23 @@ gdk_win32_gl_context_realize (GdkGLContext *context,
GdkGLContext *share = gdk_gl_context_get_shared_context (context);
GdkWin32GLContext *context_win32 = GDK_WIN32_GL_CONTEXT (context);
/* These are the real WGL context items that we will want to use later */
HGLRC hglrc;
int pixel_format;
gboolean debug_bit, compat_bit, legacy_bit;
gboolean use_es = FALSE;
/* request flags and specific versions for core (3.2+) WGL context */
int flags = 0;
int glver_major = 0;
int glver_minor = 0;
int major = 0;
int minor = 0;
GdkSurface *surface = gdk_gl_context_get_surface (context);
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
GdkWin32Display *win32_display = GDK_WIN32_DISPLAY (gdk_surface_get_display (surface));
GdkDisplay *display = gdk_surface_get_display (surface);
GdkWin32Display *win32_display = GDK_WIN32_DISPLAY (display);
if (!_set_pixformat_for_hdc (context_win32->gl_hdc,
&pixel_format,
win32_display))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_FORMAT,
_("No available configurations for the given pixel format"));
return FALSE;
}
gdk_gl_context_get_required_version (context, &glver_major, &glver_minor);
gdk_gl_context_get_required_version (context, &major, &minor);
debug_bit = gdk_gl_context_get_debug_enabled (context);
compat_bit = gdk_gl_context_get_forward_compatible (context);
/* if there isn't wglCreateContextAttribsARB(), or if GDK_GL_LEGACY is set, we default to a legacy context */
legacy_bit = !win32_display->hasWglARBCreateContext ||
g_getenv ("GDK_GL_LEGACY") != NULL;
/*
* A legacy context cannot be shared with core profile ones, so this means we
* must stick to a legacy context if the shared context is a legacy context
@ -696,42 +956,114 @@ gdk_win32_gl_context_realize (GdkGLContext *context,
if (share != NULL && gdk_gl_context_is_legacy (share))
legacy_bit = TRUE;
if (debug_bit)
flags |= WGL_CONTEXT_DEBUG_BIT_ARB;
if (compat_bit)
flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
/* if GDK_GL_LEGACY is set, we default to a legacy context */
legacy_bit = g_getenv ("GDK_GL_LEGACY") != NULL;
GDK_NOTE (OPENGL,
g_print ("Creating %s WGL context (version:%d.%d, debug:%s, forward:%s, legacy: %s)\n",
compat_bit ? "core" : "compat",
glver_major,
glver_minor,
debug_bit ? "yes" : "no",
compat_bit ? "yes" : "no",
legacy_bit ? "yes" : "no"));
use_es = GDK_DISPLAY_DEBUG_CHECK (display, GL_GLES) ||
(share != NULL && gdk_gl_context_get_use_es (share));
hglrc = _create_gl_context (context_win32->gl_hdc,
share,
flags,
glver_major,
glver_minor,
&legacy_bit,
win32_display->hasWglARBCreateContext);
if (hglrc == NULL)
if (win32_display->have_wgl || !use_es)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return FALSE;
/* These are the real WGL context items that we will want to use later */
HGLRC hglrc;
int pixel_format;
if (!_set_pixformat_for_hdc (context_win32->gl_hdc,
&pixel_format,
win32_display))
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_FORMAT,
_("No available configurations for the given pixel format"));
return FALSE;
}
/* if there isn't wglCreateContextAttribsARB() on WGL, use a legacy context */
if (!legacy_bit)
legacy_bit = !win32_display->hasWglARBCreateContext;
if (debug_bit)
flags |= WGL_CONTEXT_DEBUG_BIT_ARB;
if (compat_bit)
flags |= WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
GDK_NOTE (OPENGL,
g_print ("Creating %s WGL context (version:%d.%d, debug:%s, forward:%s, legacy: %s)\n",
compat_bit ? "core" : "compat",
major,
minor,
debug_bit ? "yes" : "no",
compat_bit ? "yes" : "no",
legacy_bit ? "yes" : "no"));
hglrc = _create_gl_context (context_win32->gl_hdc,
share,
flags,
major,
minor,
&legacy_bit,
win32_display->hasWglARBCreateContext);
if (hglrc == NULL)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return FALSE;
}
GDK_NOTE (OPENGL,
g_print ("Created WGL context[%p], pixel_format=%d\n",
hglrc,
pixel_format));
context_win32->hglrc = hglrc;
}
GDK_NOTE (OPENGL,
g_print ("Created WGL context[%p], pixel_format=%d\n",
hglrc,
pixel_format));
#ifdef GDK_WIN32_ENABLE_EGL
else
{
EGLContext egl_context;
EGLContext ctx;
context_win32->hglrc = hglrc;
if (debug_bit)
flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
if (compat_bit)
flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
GDK_NOTE (OPENGL, g_message ("Creating EGL context version %d.%d (debug:%s, forward:%s, legacy:%s)",
major, minor,
debug_bit ? "yes" : "no",
compat_bit ? "yes" : "no",
legacy_bit ? "yes" : "no"));
ctx = _create_egl_context (win32_display->egl_disp,
context_win32->egl_config,
share,
flags,
major,
minor,
&legacy_bit);
if (ctx == EGL_NO_CONTEXT)
{
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_NOT_AVAILABLE,
_("Unable to create a GL context"));
return FALSE;
}
GDK_NOTE (OPENGL,
g_print ("Created EGL context[%p]\n",
ctx));
context_win32->egl_context = ctx;
use_es = TRUE;
}
#endif
/* set whether we are using GLES */
gdk_gl_context_set_use_es (context, use_es);
/* OpenGL does not work with WS_EX_LAYERED enabled, so we need to
* disable WS_EX_LAYERED when we acquire a valid HGLRC
@ -781,9 +1113,22 @@ _gdk_win32_surface_create_gl_context (GdkSurface *surface,
GdkWin32GLContext *context = NULL;
/* Acquire and store up the Windows-specific HWND and HDC */
HWND hwnd;
/* HWND hwnd;*/
HDC hdc;
#ifdef GDK_WIN32_ENABLE_EGL
EGLContext egl_context;
EGLConfig config;
#endif
display_win32->gl_hwnd = GDK_SURFACE_HWND (surface);
hdc = GetDC (display_win32->gl_hwnd);
#ifdef GDK_WIN32_ENABLE_EGL
/* display_win32->hdc_egl_temp should *not* be destroyed here! It is destroyed at dispose()! */
display_win32->hdc_egl_temp = hdc;
#endif
if (!_gdk_win32_display_init_gl (display))
{
g_set_error_literal (error, GDK_GL_ERROR,
@ -792,10 +1137,21 @@ _gdk_win32_surface_create_gl_context (GdkSurface *surface,
return NULL;
}
hwnd = GDK_SURFACE_HWND (surface);
hdc = GetDC (hwnd);
#if 0
if (display_win32->have_wgl)
{
hwnd = GDK_SURFACE_HWND (surface);
hdc = GetDC (hwnd);
display_win32->gl_hwnd = hwnd;
display_win32->gl_hwnd = hwnd;
}
#endif
#ifdef GDK_WIN32_ENABLE_EGL
if (display_win32->have_egl && !find_eglconfig_for_window (display_win32, &config,
&display_win32->egl_min_swap_interval, error))
return NULL;
#endif
context = g_object_new (GDK_TYPE_WIN32_GL_CONTEXT,
"surface", surface,
@ -805,6 +1161,11 @@ _gdk_win32_surface_create_gl_context (GdkSurface *surface,
context->gl_hdc = hdc;
context->is_attached = attached;
#ifdef GDK_WIN32_ENABLE_EGL
if (display_win32->have_egl)
context->egl_config = config;
#endif
return GDK_GL_CONTEXT (context);
}
@ -820,41 +1181,86 @@ _gdk_win32_display_make_gl_context_current (GdkDisplay *display,
if (context == NULL)
{
wglMakeCurrent(NULL, NULL);
#ifdef GDK_WIN32_ENABLE_EGL
if (display_win32->egl_disp != EGL_NO_DISPLAY)
eglMakeCurrent(display_win32->egl_disp,
EGL_NO_SURFACE,
EGL_NO_SURFACE,
EGL_NO_CONTEXT);
else
#endif
wglMakeCurrent(NULL, NULL);
return TRUE;
}
context_win32 = GDK_WIN32_GL_CONTEXT (context);
if (!wglMakeCurrent (context_win32->gl_hdc, context_win32->hglrc))
if (!gdk_gl_context_get_use_es (context))
{
GDK_NOTE (OPENGL,
g_print ("Making WGL context current failed\n"));
return FALSE;
}
if (context_win32->is_attached && display_win32->hasWglEXTSwapControl)
{
surface = gdk_gl_context_get_surface (context);
/* If there is compositing there is no particular need to delay
* the swap when drawing on the offscreen, rendering to the screen
* happens later anyway, and its up to the compositor to sync that
* to the vblank. */
display = gdk_surface_get_display (surface);
do_frame_sync = ! gdk_display_is_composited (display);
if (do_frame_sync != context_win32->do_frame_sync)
if (!wglMakeCurrent (context_win32->gl_hdc, context_win32->hglrc))
{
context_win32->do_frame_sync = do_frame_sync;
GDK_NOTE (OPENGL,
g_print ("Making WGL context current failed\n"));
return FALSE;
}
if (do_frame_sync)
wglSwapIntervalEXT (1);
else
wglSwapIntervalEXT (0);
if (context_win32->is_attached && display_win32->hasWglEXTSwapControl)
{
surface = gdk_gl_context_get_surface (context);
/* If there is compositing there is no particular need to delay
* the swap when drawing on the offscreen, rendering to the screen
* happens later anyway, and its up to the compositor to sync that
* to the vblank. */
display = gdk_surface_get_display (surface);
do_frame_sync = ! gdk_display_is_composited (display);
if (do_frame_sync != context_win32->do_frame_sync)
{
context_win32->do_frame_sync = do_frame_sync;
if (do_frame_sync)
wglSwapIntervalEXT (1);
else
wglSwapIntervalEXT (0);
}
}
}
#ifdef GDK_WIN32_ENABLE_EGL
else
{
EGLSurface egl_surface;
surface = gdk_gl_context_get_surface (context);
if (context_win32->is_attached)
egl_surface = _gdk_win32_surface_get_egl_surface (surface, context_win32->egl_config, FALSE);
else
{
if (display_win32->hasEglSurfacelessContext)
egl_surface = EGL_NO_SURFACE;
else
egl_surface = _gdk_win32_surface_get_egl_surface (surface, context_win32->egl_config, TRUE);
}
if (!eglMakeCurrent (display_win32->egl_disp,
egl_surface,
egl_surface,
context_win32->egl_context))
{
g_warning ("eglMakeCurrent failed");
return FALSE;
}
if (display_win32->egl_min_swap_interval == 0)
eglSwapInterval (display_win32->egl_disp, 0);
else
g_debug ("Can't disable GL swap interval");
}
#endif
return TRUE;
}
@ -888,3 +1294,20 @@ gdk_win32_display_get_wgl_version (GdkDisplay *display,
return TRUE;
}
void
_gdk_win32_surface_invalidate_egl_framebuffer (GdkSurface *surface)
{
/* If we are using ANGLE, we need to force redraw of the whole Window and its child windows
* as we need to re-acquire the EGL surfaces that we rendered to upload to Cairo explicitly,
* using gdk_window_invalidate_rect (), when we maximize or restore or use aerosnap
*/
#ifdef GDK_WIN32_ENABLE_EGL
if (surface->gl_paint_context != NULL && gdk_gl_context_get_use_es (surface->gl_paint_context))
{
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
impl->egl_force_redraw_all = TRUE;
}
#endif
}

12
gdk/win32/gdkglcontext-win32.h
View File

@ -24,6 +24,10 @@
#include <epoxy/gl.h>
#include <epoxy/wgl.h>
#ifdef GDK_WIN32_ENABLE_EGL
# include <epoxy/egl.h>
#endif
#include "gdkglcontextprivate.h"
#include "gdkdisplayprivate.h"
#include "gdksurface.h"
@ -43,6 +47,12 @@ struct _GdkWin32GLContext
/* other items */
guint is_attached : 1;
guint do_frame_sync : 1;
#ifdef GDK_WIN32_ENABLE_EGL
/* EGL (Angle) Context Items */
EGLContext egl_context;
EGLConfig egl_config;
#endif
};
struct _GdkWin32GLContextClass
@ -59,6 +69,8 @@ _gdk_win32_surface_create_gl_context (GdkSurface *window,
gboolean
_gdk_win32_display_make_gl_context_current (GdkDisplay *display,
GdkGLContext *context);
void
_gdk_win32_surface_invalidate_egl_framebuffer (GdkSurface *surface);
G_END_DECLS

65
gdk/win32/gdksurface-win32.c
View File

@ -711,6 +711,22 @@ gdk_win32_surface_destroy (GdkSurface *window,
gdk_win32_surface_set_transient_for (child, NULL);
}
#ifdef GDK_WIN32_ENABLE_EGL
GdkWin32Display *display = GDK_WIN32_DISPLAY (gdk_surface_get_display (window));
/* Get rid of any EGLSurfaces that we might have created */
if (surface->egl_surface != EGL_NO_SURFACE)
{
eglDestroySurface (display->egl_disp, surface->egl_surface);
surface->egl_surface = EGL_NO_SURFACE;
}
if (surface->egl_dummy_surface != EGL_NO_SURFACE)
{
eglDestroySurface (display->egl_disp, surface->egl_dummy_surface);
surface->egl_dummy_surface = EGL_NO_SURFACE;
}
#endif
/* Remove ourself from our transient owner */
if (surface->transient_owner != NULL)
{
@ -1253,14 +1269,16 @@ gdk_win32_surface_move_resize_internal (GdkSurface *window,
}
else
{
_gdk_win32_surface_invalidate_egl_framebuffer (window);
if (with_move)
{
{
gdk_win32_surface_do_move_resize (window, x, y, width, height);
}
}
else
{
gdk_win32_surface_resize (window, width, height);
}
{
gdk_win32_surface_resize (window, width, height);
}
}
out:
@ -3809,6 +3827,9 @@ gdk_win32_surface_end_move_resize_drag (GdkSurface *window)
{
GdkWin32Surface *impl = GDK_WIN32_SURFACE (window);
GdkW32DragMoveResizeContext *context = &impl->drag_move_resize_context;
if (context->op == GDK_WIN32_DRAGOP_RESIZE)
_gdk_win32_surface_invalidate_egl_framebuffer (window);
context->op = GDK_WIN32_DRAGOP_NONE;
@ -4286,6 +4307,8 @@ gdk_win32_surface_unmaximize (GdkSurface *window)
GDK_SURFACE_HWND (window),
_gdk_win32_surface_state_to_string (window->state)));
_gdk_win32_surface_invalidate_egl_framebuffer (window);
if (GDK_SURFACE_IS_MAPPED (window))
GtkShowWindow (window, SW_RESTORE);
else
@ -4362,6 +4385,7 @@ gdk_win32_surface_unfullscreen (GdkSurface *window)
impl->hint_flags = fi->hint_flags;
SetWindowLong (GDK_SURFACE_HWND (window), GWL_STYLE, fi->style);
_gdk_win32_surface_invalidate_egl_framebuffer (window);
API_CALL (SetWindowPos, (GDK_SURFACE_HWND (window), HWND_NOTOPMOST,
fi->r.left, fi->r.top,
fi->r.right - fi->r.left, fi->r.bottom - fi->r.top,
@ -5140,3 +5164,34 @@ gdk_win32_drag_surface_iface_init (GdkDragSurfaceInterface *iface)
{
iface->present = gdk_win32_drag_surface_present;
}
#ifdef GDK_WIN32_ENABLE_EGL
EGLSurface
_gdk_win32_surface_get_egl_surface (GdkSurface *surface,
EGLConfig config,
gboolean is_dummy)
{
GdkWin32Display *display = GDK_WIN32_DISPLAY (gdk_surface_get_display (surface));
GdkWin32Surface *impl = GDK_WIN32_SURFACE (surface);
if (is_dummy)
{
if (impl->egl_dummy_surface == EGL_NO_SURFACE)
{
EGLint attribs[] = {EGL_WIDTH, 1, EGL_WIDTH, 1, EGL_NONE};
impl->egl_dummy_surface = eglCreatePbufferSurface (display->egl_disp,
config,
attribs);
}
return impl->egl_dummy_surface;
}
else
{
if (impl->egl_surface == EGL_NO_SURFACE)
impl->egl_surface = eglCreateWindowSurface (display->egl_disp, config, display->gl_hwnd, NULL);
return impl->egl_surface;
}
}
#endif

16
gdk/win32/gdksurface-win32.h
View File

@ -34,6 +34,10 @@
#include <windows.h>
#ifdef GDK_WIN32_ENABLE_EGL
# include <epoxy/egl.h>
#endif
G_BEGIN_DECLS
typedef enum
@ -351,6 +355,12 @@ struct _GdkWin32Surface
int surface_scale;
int unscaled_width;
int unscaled_height;
#ifdef GDK_WIN32_ENABLE_EGL
EGLSurface egl_surface;
EGLSurface egl_dummy_surface;
guint egl_force_redraw_all : 1;
#endif
};
struct _GdkWin32SurfaceClass
@ -392,6 +402,12 @@ void
gdk_win32_surface_apply_queued_move_resize (GdkSurface *surface,
RECT window_rect);
#ifdef GDK_WIN32_ENABLE_EGL
EGLSurface _gdk_win32_surface_get_egl_surface (GdkSurface *surface,
EGLConfig config,
gboolean is_dummy);
#endif
G_END_DECLS
#endif /* __GDK_SURFACE_WIN32_H__ */