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ui/gtk-egl: Render guest content with padding in fixed-scale mode

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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 <weifeng.liu.z@gmail.com>
Message-ID: <20250511073337.876650-10-weifeng.liu.z@gmail.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This commit is contained in:
Weifeng Liu 2025-05-11 15:33:19 +08:00 • committed by Marc-André Lureau
parent fdc09b028f
commit f05e1a93f4
4 changed files with 43 additions and 9 deletions
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10
ui/egl-helpers.c
View file

@ -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);
}