MVKGraphicsPipeline: Fail triangle fan pipelines.
Otherwise, when we try to draw with them, Metal's validation layer will
complain that the primitive type and primitive topology don't match.
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm b/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
index ce836c1..13eade5 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKPipeline.mm
@@ -386,6 +386,11 @@
_mtlPrimitiveType = MTLPrimitiveTypePoint;
if (pCreateInfo->pInputAssemblyState && !isRenderingPoints(pCreateInfo)) {
_mtlPrimitiveType = mvkMTLPrimitiveTypeFromVkPrimitiveTopology(pCreateInfo->pInputAssemblyState->topology);
+ // Explicitly fail creation with triangle fan topology.
+ if (pCreateInfo->pInputAssemblyState->topology == VK_PRIMITIVE_TOPOLOGY_TRIANGLE_FAN) {
+ setConfigurationResult(reportError(VK_ERROR_FEATURE_NOT_PRESENT, "Metal does not support triangle fans."));
+ return;
+ }
}
// Tessellation
