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ui/egl-helpers: Augment parameter list of egl_texture_blend() to convey scales of viewport

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This would help gtk-egl display showing scaled DMABuf cursor images when
gtk window was zoomed. A default scale of (1.0, 1.0) was presumed for
call sites where no scaling is needed.

Signed-off-by: Chen Zhang <tgfbeta@me.com>
Message-id: 23B229B3-3095-4DFB-8369-866784808D30@me.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Chen Zhang 2019-01-25 15:47:23 +08:00 • committed by Gerd Hoffmann
parent 5e24600a7c
commit 051a0cde7b
5 changed files with 11 additions and 8 deletions
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9
ui/egl-helpers.c
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@ -120,14 +120,15 @@ void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip)
}
void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip,
int x, int y)
int x, int y, double scale_x, double scale_y)
{
glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
int w = scale_x * src->width;
int h = scale_y * src->height;
if (flip) {
glViewport(x, y, src->width, src->height);
glViewport(x, y, w, h);
} else {
glViewport(x, dst->height - src->height - y,
src->width, src->height);
glViewport(x, dst->height - h - y, w, h);
}
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, src->texture);