commit 055466bec6d546a796d4e2878727ab12ce751b3d
author Bill Hollings <bill.hollings@brenwill.com> Sat Sep 07 21:05:32 2019 -0400
committer GitHub <noreply@github.com> Sat Sep 07 21:05:32 2019 -0400
tree 11af4ce55043cfcd6fb60a08968980b1bf754588
parent 73ac6b63e7a0edb89b8592f595f15d2af44b5e60
parent 5a02641fa1d0111eb21f301e33d8e2144a34257b

Merge pull request #733 from aerofly/master

Avoid MTLDevice minimumLinearTextureAlignmentForPixelFormat failed assertion

MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm

diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 513252f..bc89164 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -1159,6 +1159,10 @@
         uint32_t maxStorage = 0, maxUniform = 0;
         bool singleTexelStorage = true, singleTexelUniform = true;
         mvkEnumerateSupportedFormats({0, 0, VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BIT | VK_FORMAT_FEATURE_STORAGE_TEXEL_BUFFER_BIT}, true, [&](VkFormat vk) {
+            // MTLDevice minimumLinearTextureAlignmentForPixelFormat with MTLPixelFormatInvalid will cause as a failed assertion on iOS 13.x and iPad OS 13.x
+            if ( vk == VK_FORMAT_UNDEFINED )
+              return false;
+          
             NSUInteger alignment;
             if ([_mtlDevice respondsToSelector: @selector(minimumTextureBufferAlignmentForPixelFormat:)]) {
                 alignment = [_mtlDevice minimumTextureBufferAlignmentForPixelFormat: mvkMTLPixelFormatFromVkFormat(vk)];