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fix(vulkan): enable missing device features for FSR2 compute shaders

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AMD RADV validation flagged missing shaderStorageImageWriteWithoutFormat,
shaderInt16, shaderFloat16, and deviceCoherentMemory. The first two are
now required device features; shaderFloat16 is optionally enabled via
Vulkan 1.2 feature query; AMD device coherent memory extension and
feature are enabled when available to prevent VMA memory type errors.
This commit is contained in:
Kelsi 2026-04-03 21:20:37 -07:00
parent 161b218fa1
commit 23bda2d476
1 changed files with 29 additions and 0 deletions
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29
src/rendering/vk_context.cpp
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@ -316,6 +316,8 @@ bool VkContext::selectPhysicalDevice() {
VkPhysicalDeviceFeatures requiredFeatures{};
requiredFeatures.samplerAnisotropy = VK_TRUE;
requiredFeatures.fillModeNonSolid = VK_TRUE; // wireframe debug pipelines
requiredFeatures.shaderStorageImageWriteWithoutFormat = VK_TRUE; // FSR2 compute shaders
requiredFeatures.shaderInt16 = VK_TRUE; // FSR2 compute shaders
selector.set_surface(surface)
.set_minimum_version(1, 1)
.set_required_features(requiredFeatures)
@ -390,6 +392,33 @@ bool VkContext::selectPhysicalDevice() {
bool VkContext::createLogicalDevice() {
vkb::DeviceBuilder deviceBuilder{vkbPhysicalDevice_};
// Enable optional Vulkan 1.2 features for FSR2 compute shaders (shaderFloat16)
VkPhysicalDeviceVulkan12Features enabled12{};
enabled12.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_2_FEATURES;
if (instanceApiVersion_ >= VK_API_VERSION_1_2) {
VkPhysicalDeviceVulkan12Features supported12{};
supported12.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_VULKAN_1_2_FEATURES;
VkPhysicalDeviceFeatures2 features2{};
features2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
features2.pNext = &supported12;
vkGetPhysicalDeviceFeatures2(physicalDevice, &features2);
if (supported12.shaderFloat16) {
enabled12.shaderFloat16 = VK_TRUE;
LOG_INFO("Enabling shaderFloat16 for FSR2 compute shaders");
}
deviceBuilder.add_pNext(&enabled12);
}
// Enable AMD device coherent memory feature if the extension was enabled
// (prevents validation errors when VMA selects memory types with DEVICE_COHERENT_BIT_AMD)
VkPhysicalDeviceCoherentMemoryFeaturesAMD coherentFeatures{};
coherentFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_COHERENT_MEMORY_FEATURES_AMD;
if (vkbPhysicalDevice_.enable_extension_if_present(VK_AMD_DEVICE_COHERENT_MEMORY_EXTENSION_NAME)) {
coherentFeatures.deviceCoherentMemory = VK_TRUE;
deviceBuilder.add_pNext(&coherentFeatures);
LOG_INFO("Enabling AMD device coherent memory");
}
// If the graphics queue family supports >= 2 queues, request a second one
// for parallel texture/buffer uploads. Both queues share the same family
// so no queue-ownership-transfer barriers are needed.