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Merge branch 'gbsneto/vulkan-mailbox' into 'main'

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gdk/vulkancontext: Use more appropriate present mode

See merge request GNOME/gtk!5828
This commit is contained in:
Georges Basile Stavracas Neto 2023-04-13 17:07:59 +00:00
commit 8134daf843
1 changed files with 75 additions and 1 deletions
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76
gdk/gdkvulkancontext.c
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@ -243,6 +243,74 @@ gdk_vulkan_strerror (VkResult result)
}
}
#ifdef G_ENABLE_DEBUG
static const char *
surface_present_mode_to_string (VkPresentModeKHR present_mode)
{
switch (present_mode)
{
case VK_PRESENT_MODE_MAILBOX_KHR:
return "VK_PRESENT_MODE_MAILBOX_KHR";
case VK_PRESENT_MODE_IMMEDIATE_KHR:
return "VK_PRESENT_MODE_IMMEDIATE_KHR";
case VK_PRESENT_MODE_FIFO_KHR:
return "VK_PRESENT_MODE_FIFO_KHR";
case VK_PRESENT_MODE_FIFO_RELAXED_KHR:
return "VK_PRESENT_MODE_FIFO_RELAXED_KHR";
case VK_PRESENT_MODE_SHARED_DEMAND_REFRESH_KHR:
case VK_PRESENT_MODE_SHARED_CONTINUOUS_REFRESH_KHR:
case VK_PRESENT_MODE_MAX_ENUM_KHR:
default:
return "(invalid)";
}
return "(unknown)";
}
#endif
static const VkPresentModeKHR preferred_present_modes[] = {
VK_PRESENT_MODE_MAILBOX_KHR,
VK_PRESENT_MODE_IMMEDIATE_KHR,
};
static VkPresentModeKHR
find_best_surface_present_mode (GdkVulkanContext *context)
{
GdkVulkanContextPrivate *priv = gdk_vulkan_context_get_instance_private (context);
VkPresentModeKHR *available_present_modes;
uint32_t n_present_modes;
VkResult res;
res = GDK_VK_CHECK (vkGetPhysicalDeviceSurfacePresentModesKHR, gdk_vulkan_context_get_physical_device (context),
priv->surface,
&n_present_modes,
NULL);
if (res != VK_SUCCESS)
goto fallback_present_mode;
available_present_modes = g_alloca (sizeof (VkPresentModeKHR) * n_present_modes);
res = GDK_VK_CHECK (vkGetPhysicalDeviceSurfacePresentModesKHR, gdk_vulkan_context_get_physical_device (context),
priv->surface,
&n_present_modes,
available_present_modes);
if (res != VK_SUCCESS)
goto fallback_present_mode;
for (uint32_t i = 0; i < G_N_ELEMENTS (preferred_present_modes); i++)
{
for (uint32_t j = 0; j < n_present_modes; j++)
{
if (preferred_present_modes[i] == available_present_modes[j])
return available_present_modes[j];
}
}
fallback_present_mode:
return VK_PRESENT_MODE_FIFO_KHR;
}
static void
gdk_vulkan_context_dispose (GObject *gobject)
{
@ -302,6 +370,7 @@ gdk_vulkan_context_check_swapchain (GdkVulkanContext *context,
GdkSurface *surface = gdk_draw_context_get_surface (GDK_DRAW_CONTEXT (context));
VkSurfaceCapabilitiesKHR capabilities;
VkCompositeAlphaFlagBitsKHR composite_alpha;
VkPresentModeKHR present_mode;
VkSwapchainKHR new_swapchain;
VkResult res;
VkDevice device;
@ -333,6 +402,11 @@ gdk_vulkan_context_check_swapchain (GdkVulkanContext *context,
composite_alpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
}
present_mode = find_best_surface_present_mode (context);
GDK_DEBUG (VULKAN, "Using surface present mode %s",
surface_present_mode_to_string (present_mode));
/*
* Per https://www.khronos.org/registry/vulkan/specs/1.0-wsi_extensions/xhtml/vkspec.html#VkSurfaceCapabilitiesKHR
* the current extent may assume a special value, meaning that the extent should assume whatever
@ -367,7 +441,7 @@ gdk_vulkan_context_check_swapchain (GdkVulkanContext *context,
},
.preTransform = capabilities.currentTransform,
.compositeAlpha = composite_alpha,
.presentMode = VK_PRESENT_MODE_FIFO_KHR,
.presentMode = present_mode,
.clipped = VK_FALSE,
.oldSwapchain = priv->swapchain
},