Fix FBConfig cost calculation
Double buffering only doubles the color buffer, not the depth and stencil. Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
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@ -105,7 +105,7 @@ glx_find_fbconfig(Display *dpy, int screen, xcb_render_pictforminfo_t *pictfmt,
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glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_DEPTH_SIZE, &depthbuf);
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glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_STENCIL_SIZE, &stencil);
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glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_DOUBLEBUFFER, &doublebuf);
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if ((depthbuf + stencil + bufsize) * (doublebuf + 1) >= min_cost) {
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if (depthbuf + stencil + bufsize * (doublebuf + 1) >= min_cost) {
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continue;
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}
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int red, green, blue;
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@ -149,7 +149,7 @@ glx_find_fbconfig(Display *dpy, int screen, xcb_render_pictforminfo_t *pictfmt,
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} else {
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texture_fmt = rgb ? GLX_TEXTURE_FORMAT_RGB_EXT : GLX_TEXTURE_FORMAT_RGBA_EXT;
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}
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min_cost = (depthbuf + stencil + bufsize) * (doublebuf + 1);
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min_cost = depthbuf + stencil + bufsize * (doublebuf + 1);
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}
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#undef glXGetFBConfigAttribChecked
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free(cfg);
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