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

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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;
}