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vulkan: start without fragmentShaderBarycentric on GPUs that lack it (#1590)

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* vulkan: start without fragmentShaderBarycentric on GPUs that lack it

Pascal (GTX 10xx), RDNA 1 and older drivers have no
VK_KHR_fragment_shader_barycentric, so device selection rejected them
with 'Could not find suitable device' (#1432, #1416, #762). The SPIR-V
backend only emits the capability for pixel shaders with
per-vertex/barycentric inputs, so make the extension and feature
optional: warn at selection and creation, enable only when supported.
Shaders that need custom barycentrics fail at pipeline creation
instead of blocking startup for every game.

* vulkan: fix macOS build and warn about unsupported GPUs

---------

Co-authored-by: Matthew Hurley <171001439+theantipopau@users.noreply.github.com>
Co-authored-by: nmzik <Nmzik@mail.ru>
This commit is contained in:
Matthew Hurley
2026-10-17 20:55:33 +10:00
committed by GitHub
parent 9f88043ebe
commit 890393fbe6
1 changed files with 23 additions and 6 deletions
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src/graphics/presentation/window/vulkanWindow.cpp
+23 -6
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@@ -266,7 +266,6 @@ static void VulkanFindPhysicalDevice(vk::Instance instance, vk::SurfaceKHR surfa
#endif
#if !defined(__APPLE__)
check_feature(device_features2.features.depthClamp, "depthClamp");
check_feature(fragment_barycentric.fragmentShaderBarycentric, "fragmentShaderBarycentric");
#endif
check_feature(features12.samplerMirrorClampToEdge, "samplerMirrorClampToEdge",
@@ -498,7 +497,21 @@ static vk::Device VulkanCreateDevice(GraphicContext& graphics,
image_atomic_int64.pNext = supported_features2.pNext;
supported_features2.pNext = &image_atomic_int64;
}
const bool barycentric_extension =
HasExtension(device_extensions, VK_KHR_FRAGMENT_SHADER_BARYCENTRIC_EXTENSION_NAME);
vk::PhysicalDeviceFragmentShaderBarycentricFeaturesKHR supported_barycentric {};
if (barycentric_extension) {
supported_barycentric.pNext = supported_features2.pNext;
supported_features2.pNext = &supported_barycentric;
}
physical_device.getFeatures2(&supported_features2);
const bool barycentric_supported =
barycentric_extension && supported_barycentric.fragmentShaderBarycentric == VK_TRUE;
if (!barycentric_supported) {
Log::WriteToConsoleAndLog(
"WARNING: Your GPU is not fully supported (fragmentShaderBarycentric is unavailable). "
"Some games may render incorrectly or crash.\n");
}
graphics.shader_image_int64_atomics_enabled = image_atomic_int64.shaderImageInt64Atomics;
auto features12 = WindowContext::RequiredVulkan12Features();
@@ -610,9 +623,13 @@ static vk::Device VulkanCreateDevice(GraphicContext& graphics,
robustness2.pNext = &features12;
#else
vk::PhysicalDeviceFragmentShaderBarycentricFeaturesKHR fragment_barycentric {};
fragment_barycentric.pNext = &features12;
fragment_barycentric.fragmentShaderBarycentric = VK_TRUE;
robustness2.pNext = &fragment_barycentric;
if (barycentric_supported) {
fragment_barycentric.pNext = &features12;
fragment_barycentric.fragmentShaderBarycentric = VK_TRUE;
robustness2.pNext = &fragment_barycentric;
} else {
robustness2.pNext = &features12;
}
#endif
robustness2.robustBufferAccess2 = supported_robustness2.robustBufferAccess2;
robustness2.robustImageAccess2 = supported_robustness2.robustImageAccess2;
@@ -966,7 +983,6 @@ void WindowContext::CreateVulkan() {
#else
device_extensions.push_back(VK_EXT_DEPTH_CLIP_ENABLE_EXTENSION_NAME);
device_extensions.push_back(VK_EXT_COLOR_WRITE_ENABLE_EXTENSION_NAME);
device_extensions.push_back(VK_KHR_FRAGMENT_SHADER_BARYCENTRIC_EXTENSION_NAME);
#endif
#ifdef KYTY_ENABLE_DEBUG_PRINTF
@@ -1024,7 +1040,8 @@ void WindowContext::CreateVulkan() {
VK_EXT_PROVOKING_VERTEX_EXTENSION_NAME,
VK_EXT_MESH_SHADER_EXTENSION_NAME,
VK_KHR_WORKGROUP_MEMORY_EXPLICIT_LAYOUT_EXTENSION_NAME,
VK_EXT_DEPTH_RANGE_UNRESTRICTED_EXTENSION_NAME}) {
VK_EXT_DEPTH_RANGE_UNRESTRICTED_EXTENSION_NAME,
VK_KHR_FRAGMENT_SHADER_BARYCENTRIC_EXTENSION_NAME}) {
if (HasExtension(available_extensions, extension)) {
device_extensions.push_back(extension);
}