Mesa (master): radv,vulkan: add a new x11 wsi drirc workaround for DOOM Eternal
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gitlab-mirror at kemper.freedesktop.org
Thu Jul 2 09:08:51 UTC 2020
Module: Mesa
Branch: master
Commit: ab9ecb607b88dd4610815ac254205656918e408e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ab9ecb607b88dd4610815ac254205656918e408e
Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date: Wed Jul 1 08:06:09 2020 +0200
radv,vulkan: add a new x11 wsi drirc workaround for DOOM Eternal
DOOM Eternal happily creates a swapchain with 2 images for IMMEDIATE.
This fixes a 10% performance issue with RADV.
Cc: 20.1 <mesa-stable at lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5704>
---
src/amd/vulkan/radv_device.c | 1 +
src/util/00-mesa-defaults.conf | 6 +++++
src/util/driconf.h | 5 ++++
src/vulkan/wsi/wsi_common.h | 5 ++++
src/vulkan/wsi/wsi_common_x11.c | 57 +++++++++++++++++++++++++----------------
5 files changed, 52 insertions(+), 22 deletions(-)
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index e8324162296..6bec8f4a675 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -586,6 +586,7 @@ DRI_CONF_BEGIN
DRI_CONF_ADAPTIVE_SYNC("true")
DRI_CONF_VK_X11_OVERRIDE_MIN_IMAGE_COUNT(0)
DRI_CONF_VK_X11_STRICT_IMAGE_COUNT("false")
+ DRI_CONF_VK_X11_ENSURE_MIN_IMAGE_COUNT("false")
DRI_CONF_RADV_REPORT_LLVM9_VERSION_STRING("false")
DRI_CONF_RADV_ENABLE_MRT_OUTPUT_NAN_FIXUP("false")
DRI_CONF_RADV_NO_DYNAMIC_BOUNDS("false")
diff --git a/src/util/00-mesa-defaults.conf b/src/util/00-mesa-defaults.conf
index b74118160db..ddc65a21fe8 100644
--- a/src/util/00-mesa-defaults.conf
+++ b/src/util/00-mesa-defaults.conf
@@ -593,6 +593,12 @@ TODO: document the other workarounds.
<application name="DOOM" executable="DOOMx64vk.exe">
<option name="vk_x11_strict_image_count" value="true" />
</application>
+
+ <!-- DOOM Doom Eternal happily creates a swapchain with 2 images for
+ IMMEDIATE. This fixes a 10% performance issue with RADV. -->
+ <application name="DOOMEternal" executable="DOOMEternalx64vk.exe">
+ <option name="vk_x11_ensure_min_image_count" value="true" />
+ </application>
</device>
<!-- vmwgfx doesn't like full buffer swaps and can't sync to vertical retraces.-->
<device driver="vmwgfx">
diff --git a/src/util/driconf.h b/src/util/driconf.h
index b807e669ce2..909768c1c32 100644
--- a/src/util/driconf.h
+++ b/src/util/driconf.h
@@ -307,6 +307,11 @@ DRI_CONF_OPT_BEGIN_B(vk_x11_strict_image_count, def) \
DRI_CONF_DESC("Force the X11 WSI to create exactly the number of image specified by the application in VkSwapchainCreateInfoKHR::minImageCount") \
DRI_CONF_OPT_END
+#define DRI_CONF_VK_X11_ENSURE_MIN_IMAGE_COUNT(def) \
+DRI_CONF_OPT_BEGIN_B(vk_x11_ensure_min_image_count, def) \
+ DRI_CONF_DESC("Force the X11 WSI to create at least the number of image specified by the driver in VkSurfaceCapabilitiesKHR::minImageCount") \
+DRI_CONF_OPT_END
+
#define DRI_CONF_MESA_GLTHREAD(def) \
DRI_CONF_OPT_BEGIN_B(mesa_glthread, def) \
DRI_CONF_DESC("Enable offloading GL driver work to a separate thread") \
diff --git a/src/vulkan/wsi/wsi_common.h b/src/vulkan/wsi/wsi_common.h
index 99ccdf84cde..cbf7e1be14e 100644
--- a/src/vulkan/wsi/wsi_common.h
+++ b/src/vulkan/wsi/wsi_common.h
@@ -109,6 +109,11 @@ struct wsi_device {
* provided VkSwapchainCreateInfoKH::RminImageCount.
*/
bool strict_imageCount;
+
+ /* Ensures to create at least the number of image specified by the
+ * driver in VkSurfaceCapabilitiesKHR::minImageCount.
+ */
+ bool ensure_minImageCount;
} x11;
/* Signals the semaphore such that any wait on the semaphore will wait on
diff --git a/src/vulkan/wsi/wsi_common_x11.c b/src/vulkan/wsi/wsi_common_x11.c
index fd275ce7930..bebeabfb9eb 100644
--- a/src/vulkan/wsi/wsi_common_x11.c
+++ b/src/vulkan/wsi/wsi_common_x11.c
@@ -450,6 +450,33 @@ x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
return VK_SUCCESS;
}
+static uint32_t
+x11_get_min_image_count(struct wsi_device *wsi_device)
+{
+ if (wsi_device->x11.override_minImageCount)
+ return wsi_device->x11.override_minImageCount;
+
+ /* For IMMEDIATE and FIFO, most games work in a pipelined manner where the
+ * can produce frames at a rate of 1/MAX(CPU duration, GPU duration), but
+ * the render latency is CPU duration + GPU duration.
+ *
+ * This means that with scanout from pageflipping we need 3 frames to run
+ * full speed:
+ * 1) CPU rendering work
+ * 2) GPU rendering work
+ * 3) scanout
+ *
+ * Once we have a nonblocking acquire that returns a semaphore we can merge
+ * 1 and 3. Hence the ideal implementation needs only 2 images, but games
+ * cannot tellwe currently do not have an ideal implementation and that
+ * hence they need to allocate 3 images. So let us do it for them.
+ *
+ * This is a tradeoff as it uses more memory than needed for non-fullscreen
+ * and non-performance intensive applications.
+ */
+ return 3;
+}
+
static VkResult
x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
struct wsi_device *wsi_device,
@@ -502,31 +529,10 @@ x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
}
- /* For IMMEDIATE and FIFO, most games work in a pipelined manner where the
- * can produce frames at a rate of 1/MAX(CPU duration, GPU duration), but
- * the render latency is CPU duration + GPU duration.
- *
- * This means that with scanout from pageflipping we need 3 frames to run
- * full speed:
- * 1) CPU rendering work
- * 2) GPU rendering work
- * 3) scanout
- *
- * Once we have a nonblocking acquire that returns a semaphore we can merge
- * 1 and 3. Hence the ideal implementation needs only 2 images, but games
- * cannot tellwe currently do not have an ideal implementation and that
- * hence they need to allocate 3 images. So let us do it for them.
- *
- * This is a tradeoff as it uses more memory than needed for non-fullscreen
- * and non-performance intensive applications.
- */
- caps->minImageCount = 3;
+ caps->minImageCount = x11_get_min_image_count(wsi_device);
/* 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;
@@ -1440,6 +1446,8 @@ x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
num_images = pCreateInfo->minImageCount;
else if (present_mode == VK_PRESENT_MODE_MAILBOX_KHR)
num_images = MAX2(num_images, 5);
+ else if (wsi_device->x11.ensure_minImageCount)
+ num_images = MAX2(num_images, x11_get_min_image_count(wsi_device));
xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
struct wsi_x11_connection *wsi_conn =
@@ -1659,6 +1667,11 @@ wsi_x11_init_wsi(struct wsi_device *wsi_device,
wsi_device->x11.strict_imageCount =
driQueryOptionb(dri_options, "vk_x11_strict_image_count");
}
+ if (driCheckOption(dri_options, "vk_x11_ensure_min_image_count", DRI_BOOL)) {
+ wsi_device->x11.ensure_minImageCount =
+ driQueryOptionb(dri_options, "vk_x11_ensure_min_image_count");
+ }
+
}
wsi->base.get_support = x11_surface_get_support;
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