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gpu: Add GDK_VULKAN_SKIP env var

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The variable forces skipping of optional Vulkan features. This is useful
for testing.

Also debug-print the features in use.
This commit is contained in:
Benjamin Otte
2023-11-03 02:37:17 +01:00
parent 98c88780bc
commit 96e579501f
1 changed files with 30 additions and 4 deletions
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34
gdk/gdkvulkancontext.c
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@@ -32,6 +32,16 @@
#include <glib/gi18n-lib.h>
#include <math.h>
#ifdef GDK_RENDERING_VULKAN
static const GdkDebugKey gsk_vulkan_feature_keys[] = {
{ "dmabuf", GDK_VULKAN_FEATURE_DMABUF, "Never import Dmabufs" },
{ "ycbcr", GDK_VULKAN_FEATURE_YCBCR, "Do not support Ycbcr textures" },
{ "descriptor-indexing", GDK_VULKAN_FEATURE_DESCRIPTOR_INDEXING, "Force slow descriptor set layout codepath" },
{ "dynamic-indexing", GDK_VULKAN_FEATURE_DYNAMIC_INDEXING, "Hardcode small number of buffer and texure arrays" },
{ "nonuniform-indexing", GDK_VULKAN_FEATURE_NONUNIFORM_INDEXING, "Split draw calls to ensure uniform texture accesses" },
};
#endif
/**
* GdkVulkanContext:
*
@@ -1319,6 +1329,7 @@ gdk_display_create_vulkan_device (GdkDisplay *display,
const char *override;
gboolean list_devices;
int first, last;
GdkVulkanFeatures skip_features;
uint32_t n_devices = 0;
GDK_VK_CHECK(vkEnumeratePhysicalDevices, display->vk_instance, &n_devices, NULL);
@@ -1338,6 +1349,10 @@ gdk_display_create_vulkan_device (GdkDisplay *display,
first = 0;
last = n_devices;
skip_features = gdk_parse_debug_var ("GDK_VULKAN_SKIP",
gsk_vulkan_feature_keys,
G_N_ELEMENTS (gsk_vulkan_feature_keys));
override = g_getenv ("GDK_VULKAN_DEVICE");
list_devices = FALSE;
if (override)
@@ -1419,14 +1434,13 @@ gdk_display_create_vulkan_device (GdkDisplay *display,
for (i = first; i < last; i++)
{
GdkVulkanFeatures features;
GdkVulkanFeatures features, device_features;
uint32_t n_queue_props;
if (!physical_device_supports_extension (devices[i], VK_EXT_DESCRIPTOR_INDEXING_EXTENSION_NAME))
if (!physical_device_check_features (devices[i], &device_features))
continue;
if (!physical_device_check_features (devices[i], &features))
continue;
features = device_features & ~skip_features;
vkGetPhysicalDeviceQueueFamilyProperties (devices[i], &n_queue_props, NULL);
VkQueueFamilyProperties *queue_props = g_newa (VkQueueFamilyProperties, n_queue_props);
@@ -1492,6 +1506,18 @@ gdk_display_create_vulkan_device (GdkDisplay *display,
vkGetDeviceQueue(display->vk_device, j, 0, &display->vk_queue);
display->vk_queue_family_index = j;
display->vulkan_features = features;
GDK_DISPLAY_DEBUG (display, VULKAN, "Enabled features (use GDK_VULKAN_SKIP env var to disable):");
for (i = 0; i < G_N_ELEMENTS (gsk_vulkan_feature_keys); i++)
{
GDK_DISPLAY_DEBUG (display, VULKAN, " %s: %s",
gsk_vulkan_feature_keys[i].key,
(features & gsk_vulkan_feature_keys[i].value) ? "YES" :
((skip_features & gsk_vulkan_feature_keys[i].value) ? "disabled via env var" :
(((device_features & gsk_vulkan_feature_keys[i].value) == 0) ? "not supported" :
"Hum, what? This should not happen.")));
}
return TRUE;
}
}