vulkan: add vk_x11_strict_image_count option

[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 e233c0625f30067d95a6809747e78a65ccd91bfe..491bd8a3702e4e892745f7a0accd29968237afb7 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;
@@ -1091,6 +1095,16 @@ x11_manage_fifo_queues(void *state)
          return NULL;
       }
 
+      if (chain->base.present_mode == VK_PRESENT_MODE_MAILBOX_KHR) {
+         result = chain->base.wsi->WaitForFences(chain->base.device, 1,
+                                        &chain->base.fences[image_index],
+                                        true, UINT64_MAX);
+         if (result != VK_SUCCESS) {
+            result = VK_ERROR_OUT_OF_DATE_KHR;
+            goto fail;
+         }
+      }
+
       uint64_t target_msc = 0;
       if (chain->has_acquire_queue)
          target_msc = chain->last_present_msc + 1;
@@ -1394,10 +1408,15 @@ x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
    struct x11_swapchain *chain;
    xcb_void_cookie_t cookie;
    VkResult result;
+   VkPresentModeKHR present_mode = wsi_swapchain_get_present_mode(wsi_device, pCreateInfo);
 
    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 
-   const unsigned num_images = pCreateInfo->minImageCount;
+   unsigned num_images = pCreateInfo->minImageCount;
+   if (wsi_device->x11.strict_imageCount)
+      num_images = pCreateInfo->minImageCount;
+   else if (present_mode == VK_PRESENT_MODE_MAILBOX_KHR)
+      num_images = MAX2(num_images, 5);
 
    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
    struct wsi_x11_connection *wsi_conn =
@@ -1429,7 +1448,7 @@ x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
    chain->base.get_wsi_image = x11_get_wsi_image;
    chain->base.acquire_next_image = x11_acquire_next_image;
    chain->base.queue_present = x11_queue_present;
-   chain->base.present_mode = wsi_swapchain_get_present_mode(wsi_device, pCreateInfo);
+   chain->base.present_mode = present_mode;
    chain->base.image_count = num_images;
    chain->conn = conn;
    chain->window = window;
@@ -1503,7 +1522,8 @@ x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
          goto fail_init_images;
    }
 
-   if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
+   if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR ||
+       chain->base.present_mode == VK_PRESENT_MODE_MAILBOX_KHR) {
       chain->has_present_queue = true;
 
       /* Initialize our queues.  We make them base.image_count + 1 because we will
@@ -1575,7 +1595,8 @@ 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;
@@ -1606,6 +1627,17 @@ 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");
+      }
+      if (driCheckOption(dri_options, "vk_x11_strict_image_count", DRI_BOOL)) {
+         wsi_device->x11.strict_imageCount =
+            driQueryOptionb(dri_options, "vk_x11_strict_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;