Prefer FBConfig with smaller depth + stencil buffer
Reduce GPU memory usage to what it was before fix-fbconfig. Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
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@ -10,6 +10,7 @@
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*
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*/
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#include <limits.h>
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#include <GL/glx.h>
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#include <X11/Xlib-xcb.h>
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#include <assert.h>
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@ -96,8 +97,15 @@ glx_find_fbconfig(Display *dpy, int screen, xcb_render_pictforminfo_t *pictfmt,
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} while (0)
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int texture_tgts, y_inverted, texture_fmt;
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bool found = false;
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int min_cost = INT_MAX;
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GLXFBConfig ret;
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for (int i = 0; i < ncfg; i++) {
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int depthbuf, stencil;
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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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if (depthbuf + stencil >= min_cost) {
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continue;
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}
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int red, green, blue;
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glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_RED_SIZE, &red);
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glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_BLUE_SIZE, &blue);
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@ -139,7 +147,7 @@ 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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break;
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min_cost = depthbuf + stencil;
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}
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#undef glXGetFBConfigAttribChecked
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free(cfg);
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