wsi: add minImageCount override

[mesa.git] / src / vulkan / wsi / wsi_common_x11.c

diff --git a/src/vulkan/wsi/wsi_common_x11.c b/src/vulkan/wsi/wsi_common_x11.c
index 91130432a3e166c52f20f751d366e07731e745ec..af61bb91dca8c3cefdf612c5db3945e315ee64d3 100644 (file)
--- a/src/vulkan/wsi/wsi_common_x11.c
+++ b/src/vulkan/wsi/wsi_common_x11.c
@@ -38,6 +38,7 @@
 #include <xf86drm.h>
 #include "drm-uapi/drm_fourcc.h"
 #include "util/hash_table.h"
+#include "util/xmlconfig.h"
 
 #include "vk_util.h"
 #include "wsi_common_private.h"
@@ -523,6 +524,9 @@ x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
    /* There is no real maximum */
    caps->maxImageCount = 0;
 
+   if (wsi_device->x11.override_minImageCount)
+      caps->minImageCount = wsi_device->x11.override_minImageCount;
+
    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
    caps->maxImageArrayLayers = 1;
@@ -1589,7 +1593,8 @@ fail_alloc:
 
 VkResult
 wsi_x11_init_wsi(struct wsi_device *wsi_device,
-                 const VkAllocationCallbacks *alloc)
+                 const VkAllocationCallbacks *alloc,
+                 const struct driOptionCache *dri_options)
 {
    struct wsi_x11 *wsi;
    VkResult result;
@@ -1620,6 +1625,13 @@ wsi_x11_init_wsi(struct wsi_device *wsi_device,
       goto fail_mutex;
    }
 
+   if (dri_options) {
+      if (driCheckOption(dri_options, "vk_x11_override_min_image_count", DRI_INT)) {
+         wsi_device->x11.override_minImageCount =
+            driQueryOptioni(dri_options, "vk_x11_override_min_image_count");
+      }
+   }
+
    wsi->base.get_support = x11_surface_get_support;
    wsi->base.get_capabilities2 = x11_surface_get_capabilities2;
    wsi->base.get_formats = x11_surface_get_formats;