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render/egl, backend/wayland: add workaround for split render/display setups
Split render/display setups have two separate devices: one display-only with a primary node, and one render-only with a render node. However in these cases the EGL implementation and the Wayland compositor will advertise the display device instead of the render device [1]. The EGL implementation will magically open the render device when the display device is passed in. So just pass the display device as if it were a render device. Maybe in the future Mesa will advertise the render device instead and we'll be able to remove this workaround. [1]: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4178
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2 changed files with 12 additions and 2 deletions
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@ -143,7 +143,12 @@ static char *get_render_name(const char *name) {
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if (match == NULL) {
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wlr_log(WLR_ERROR, "Cannot find DRM device %s", name);
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} else if (!(match->available_nodes & (1 << DRM_NODE_RENDER))) {
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wlr_log(WLR_ERROR, "DRM device %s has no render node", name);
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// Likely a split display/render setup. Pick the primary node and hope
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// Mesa will open the right render node under-the-hood.
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wlr_log(WLR_DEBUG, "DRM device %s has no render node, "
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"falling back to primary node", name);
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assert(match->available_nodes & (1 << DRM_NODE_PRIMARY));
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render_name = strdup(match->nodes[DRM_NODE_PRIMARY]);
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} else {
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render_name = strdup(match->nodes[DRM_NODE_RENDER]);
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}
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@ -766,7 +766,12 @@ static char *get_render_name(const char *name) {
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if (match == NULL) {
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wlr_log(WLR_ERROR, "Cannot find DRM device %s", name);
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} else if (!(match->available_nodes & (1 << DRM_NODE_RENDER))) {
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wlr_log(WLR_ERROR, "DRM device %s has no render node", name);
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// Likely a split display/render setup. Pick the primary node and hope
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// Mesa will open the right render node under-the-hood.
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wlr_log(WLR_DEBUG, "DRM device %s has no render node, "
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"falling back to primary node", name);
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assert(match->available_nodes & (1 << DRM_NODE_PRIMARY));
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render_name = strdup(match->nodes[DRM_NODE_PRIMARY]);
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} else {
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render_name = strdup(match->nodes[DRM_NODE_RENDER]);
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}
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