From f05e1a93f48729b568fdf86a12d56ee142cee5e1 Mon Sep 17 00:00:00 2001 From: Weifeng Liu Date: Sun, 11 May 2025 15:33:19 +0800 Subject: [PATCH] ui/gtk-egl: Render guest content with padding in fixed-scale mode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Scaling was not respected when rendering frames in gtk-egl.c (used if gl=on and X11 mode). To fix this, add fields x and y to struct egl_fb for x offset and y offset so we can add padding to window. Signed-off-by: Weifeng Liu Message-ID: <20250511073337.876650-10-weifeng.liu.z@gmail.com> Acked-by: Gerd Hoffmann Acked-by: Marc-André Lureau --- include/ui/egl-helpers.h | 4 +++- ui/egl-helpers.c | 10 ++++++++-- ui/gtk-egl.c | 36 +++++++++++++++++++++++++++++++----- ui/sdl2-gl.c | 2 +- 4 files changed, 43 insertions(+), 9 deletions(-) diff --git a/include/ui/egl-helpers.h b/include/ui/egl-helpers.h index fb80e15142..acf993fcf5 100644 --- a/include/ui/egl-helpers.h +++ b/include/ui/egl-helpers.h @@ -17,6 +17,8 @@ extern bool qemu_egl_angle_d3d; typedef struct egl_fb { int width; int height; + int x; + int y; GLuint texture; GLuint framebuffer; bool delete_texture; @@ -26,7 +28,7 @@ typedef struct egl_fb { #define EGL_FB_INIT { 0, } void egl_fb_destroy(egl_fb *fb); -void egl_fb_setup_default(egl_fb *fb, int width, int height); +void egl_fb_setup_default(egl_fb *fb, int width, int height, int x, int y); void egl_fb_setup_for_tex(egl_fb *fb, int width, int height, GLuint texture, bool delete); void egl_fb_setup_new_tex(egl_fb *fb, int width, int height); diff --git a/ui/egl-helpers.c b/ui/egl-helpers.c index 9cda2bbbee..5503a795e4 100644 --- a/ui/egl-helpers.c +++ b/ui/egl-helpers.c @@ -93,14 +93,18 @@ void egl_fb_destroy(egl_fb *fb) fb->width = 0; fb->height = 0; + fb->x = 0; + fb->y = 0; fb->texture = 0; fb->framebuffer = 0; } -void egl_fb_setup_default(egl_fb *fb, int width, int height) +void egl_fb_setup_default(egl_fb *fb, int width, int height, int x, int y) { fb->width = width; fb->height = height; + fb->x = x; + fb->y = y; fb->framebuffer = 0; /* default framebuffer */ } @@ -145,6 +149,7 @@ void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip) glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer); glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer); glViewport(0, 0, dst->width, dst->height); + glClear(GL_COLOR_BUFFER_BIT); if (src->dmabuf) { x1 = qemu_dmabuf_get_x(src->dmabuf); @@ -161,7 +166,8 @@ void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip) x2 = x1 + w; glBlitFramebuffer(x1, y1, x2, y2, - 0, 0, dst->width, dst->height, + dst->x, dst->y, + dst->x + dst->width, dst->y + dst->height, GL_COLOR_BUFFER_BIT, GL_LINEAR); } diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index f8e4f4bc70..0b787bea25 100644 --- a/ui/gtk-egl.c +++ b/ui/gtk-egl.c @@ -340,7 +340,11 @@ void gd_egl_scanout_flush(DisplayChangeListener *dcl, { VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); GdkWindow *window; - int ww, wh, ws; + int px_offset, py_offset; + int gs; + int pw_widget, ph_widget, pw_surface, ph_surface; + int ww_widget, wh_widget, ww_surface, wh_surface; + int fbw, fbh; if (!vc->gfx.scanout_mode) { return; @@ -353,10 +357,32 @@ void gd_egl_scanout_flush(DisplayChangeListener *dcl, vc->gfx.esurface, vc->gfx.ectx); window = gtk_widget_get_window(vc->gfx.drawing_area); - ws = gdk_window_get_scale_factor(window); - ww = gdk_window_get_width(window) * ws; - wh = gdk_window_get_height(window) * ws; - egl_fb_setup_default(&vc->gfx.win_fb, ww, wh); + gs = gdk_window_get_scale_factor(window); + ww_widget = gdk_window_get_width(window); + wh_widget = gdk_window_get_height(window); + fbw = surface_width(vc->gfx.ds); + fbh = surface_height(vc->gfx.ds); + + gd_update_scale(vc, ww_widget, wh_widget, fbw, fbh); + + ww_surface = fbw * vc->gfx.scale_x; + wh_surface = fbh * vc->gfx.scale_y; + pw_widget = ww_widget * gs; + ph_widget = wh_widget * gs; + pw_surface = ww_surface * gs; + ph_surface = wh_surface * gs; + + px_offset = 0; + py_offset = 0; + if (pw_widget > pw_surface) { + px_offset = (pw_widget - pw_surface) / 2; + } + if (ph_widget > ph_surface) { + py_offset = (ph_widget - ph_surface) / 2; + } + + egl_fb_setup_default(&vc->gfx.win_fb, pw_surface, ph_surface, + px_offset, py_offset); if (vc->gfx.cursor_fb.texture) { egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb, vc->gfx.y0_top); diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c index e01d9ab0c7..3be17d1079 100644 --- a/ui/sdl2-gl.c +++ b/ui/sdl2-gl.c @@ -241,7 +241,7 @@ void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, SDL_GL_MakeCurrent(scon->real_window, scon->winctx); SDL_GetWindowSize(scon->real_window, &ww, &wh); - egl_fb_setup_default(&scon->win_fb, ww, wh); + egl_fb_setup_default(&scon->win_fb, ww, wh, 0, 0); egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top); SDL_GL_SwapWindow(scon->real_window); -- 2.39.5