Attachment 129724 Details for Bug 99715 – Patch with X11 extension-based heuristic

[patch] Patch with X11 extension-based heuristic

0001-vulkan-wsi-Improve-the-DRI3-error-message.patch (text/plain), 4.13 KB, created by Jason Ekstrand on 2017-02-18 07:00:05 UTC

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Creator: Jason Ekstrand

Created: 2017-02-18 07:00:05 UTC

Size: 4.13 KB

patch

obsolete

>From c1d9f17d856a1829c5e717db88c013e48986f52a Mon Sep 17 00:00:00 2001
>From: Jason Ekstrand <jason.ekstrand@intel.com>
>Date: Fri, 17 Feb 2017 22:51:07 -0800
>Subject: [PATCH] vulkan/wsi: Improve the DRI3 error message
>
>This commit improves the message by suggesting that users with custom
>xorg.conf files double-check DRI3.  More importantly, it includes a
>little heuristic to check to see if we're running on AMD or NVIDIA's
>proprietary X11 drivers and, if we are, doesn't emit the warning.  This
>way, users with both a discrete card and Intel graphics don't get the
>warning when they're just running on the discrete card.
>
>Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99715
>Cc: Rene Lindsay <rjklindsay@hotmail.com>
>Cc: Jacob Lifshay <programmerjake@gmail.com>
>---
> src/vulkan/wsi/wsi_common_x11.c | 33 ++++++++++++++++++++++++++++-----
> 1 file changed, 28 insertions(+), 5 deletions(-)
>
>diff --git a/src/vulkan/wsi/wsi_common_x11.c b/src/vulkan/wsi/wsi_common_x11.c
>index 64ba921..2ca9e63 100644
>--- a/src/vulkan/wsi/wsi_common_x11.c
>+++ b/src/vulkan/wsi/wsi_common_x11.c
>@@ -49,6 +49,7 @@
> struct wsi_x11_connection {
>    bool has_dri3;
>    bool has_present;
>+   bool is_proprietary_x11;
> };
> 
> struct wsi_x11 {
>@@ -63,8 +64,8 @@ static struct wsi_x11_connection *
> wsi_x11_connection_create(const VkAllocationCallbacks *alloc,
>                           xcb_connection_t *conn)
> {
>-   xcb_query_extension_cookie_t dri3_cookie, pres_cookie;
>-   xcb_query_extension_reply_t *dri3_reply, *pres_reply;
>+   xcb_query_extension_cookie_t dri3_cookie, pres_cookie, amd_cookie, nv_cookie;
>+   xcb_query_extension_reply_t *dri3_reply, *pres_reply, *amd_reply, *nv_reply;
> 
>    struct wsi_x11_connection *wsi_conn =
>       vk_alloc(alloc, sizeof(*wsi_conn), 8,
>@@ -75,20 +76,39 @@ wsi_x11_connection_create(const VkAllocationCallbacks *alloc,
>    dri3_cookie = xcb_query_extension(conn, 4, "DRI3");
>    pres_cookie = xcb_query_extension(conn, 7, "PRESENT");
> 
>+   /* We try to be nice to users and emit a warning if they try to use a
>+    * Vulkan application on a system without DRI3 enabled.  However, this ends
>+    * up spewing the warning when a user has, for example, both Intel
>+    * integrated graphics and a discrete card with proprietary driers and are
>+    * running on the discrete card with the proprietary DDX.  In this case, we
>+    * really don't want to print the warning because it just confuses users.
>+    * As a heuristic to detect this case, we check for a couple of proprietary
>+    * X11 extensions.
>+    */
>+   amd_cookie = xcb_query_extension(conn, 4, "ATIFGLRXDRI");
>+   nv_cookie = xcb_query_extension(conn, 4, "NV-CONTROL");
>+
>    dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL);
>    pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL);
>-   if (dri3_reply == NULL || pres_reply == NULL) {
>+   amd_reply = xcb_query_extension_reply(conn, amd_cookie, NULL);
>+   nv_reply = xcb_query_extension_reply(conn, nv_cookie, NULL);
>+   if (!dri3_reply || !pres_reply || !amd_reply || !nv_reply) {
>       free(dri3_reply);
>       free(pres_reply);
>+      free(amd_reply);
>+      free(nv_reply);
>       vk_free(alloc, wsi_conn);
>       return NULL;
>    }
> 
>    wsi_conn->has_dri3 = dri3_reply->present != 0;
>    wsi_conn->has_present = pres_reply->present != 0;
>+   wsi_conn->is_proprietary_x11 = amd_reply->present || nv_reply->present;
> 
>    free(dri3_reply);
>    free(pres_reply);
>+   free(amd_reply);
>+   free(nv_reply);
> 
>    return wsi_conn;
> }
>@@ -265,8 +285,11 @@ VkBool32 wsi_get_physical_device_xcb_presentation_support(
>       return false;
> 
>    if (!wsi_conn->has_dri3) {
>-      fprintf(stderr, "vulkan: No DRI3 support detected - required for presentation\n");
>-      fprintf(stderr, "Note: Buggy applications may crash, if they do please report to vendor\n");
>+      if (!wsi_conn->is_proprietary_x11) {
>+         fprintf(stderr, "vulkan: No DRI3 support detected - required for presentation\n");
>+         fprintf(stderr, "If you have manually modified xorg.conf, please ensure DRI3 is enabled\n"
>+         fprintf(stderr, "Note: Buggy applications may crash, if they do please report to vendor\n");
>+      }
>       return false;
>    }
> 
>-- 
>2.5.0.400.gff86faf
>

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Attachments on bug 99715: 129656 | 129724 | 129725 | 129733 | 129935

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