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vo_opengl utils: use gl->main_fb when reading window content 

The main framebuffer is not the default framebuffer for the dxinterop
backend. Bind the main framebuffer and use the appropriate attachment
when reading the window content.

Fix #3284
This commit is contained in:
quilloss 2016-06-26 19:08:24 +08:00 committed by wm4
parent e081e46950
commit 24478a8a72
1 changed files with 4 additions and 1 deletions
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5
video/out/opengl/utils.c
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@ -109,8 +109,10 @@ mp_image_t *gl_read_window_contents(GL *gl)
mp_image_t *image = mp_image_alloc(IMGFMT_RGB24, vp[2], vp[3]);
if (!image)
return NULL;
gl->BindFramebuffer(GL_FRAMEBUFFER, gl->main_fb);
GLenum obj = gl->main_fb ? GL_COLOR_ATTACHMENT0 : GL_FRONT;
gl->PixelStorei(GL_PACK_ALIGNMENT, 1);
gl->ReadBuffer(GL_FRONT);
gl->ReadBuffer(obj);
//flip image while reading (and also avoid stride-related trouble)
for (int y = 0; y < vp[3]; y++) {
gl->ReadPixels(vp[0], vp[1] + vp[3] - y - 1, vp[2], 1,
@ -118,6 +120,7 @@ mp_image_t *gl_read_window_contents(GL *gl)
image->planes[0] + y * image->stride[0]);
}
gl->PixelStorei(GL_PACK_ALIGNMENT, 4);
gl->BindFramebuffer(GL_FRAMEBUFFER, 0);
return image;
}