Fix compiler errors on newer vulkan implementations

src/device.cpp

@@ -214,12 +214,11 @@ namespace vuh {
 	                            , vk::PipelineCache pipe_cache
 	                            , const vk::PipelineShaderStageCreateInfo& shader_stage_info
 	                            , vk::PipelineCreateFlags flags
-	                            )-> vk::Pipeline
+	                            )-> vk::ResultValue<vk::Pipeline>
 	{
 		auto pipelineCI = vk::ComputePipelineCreateInfo(flags
 																		, shader_stage_info, pipe_layout);
 		return createComputePipeline(pipe_cache, pipelineCI, nullptr);
-
 	}
 
 	/// Detach the current compute command buffer for sync operations and create the new one.

src/include/vuh/delayed.hpp

@@ -5,6 +5,7 @@
 #include <vuh/resource.hpp>
 
 #include <cassert>
+#include <memory>
 
 namespace vuh {
 	namespace detail{

src/include/vuh/device.h

@@ -45,10 +45,10 @@ namespace vuh {
 		                    , vk::PipelineCache pipe_cache
 		                    , const vk::PipelineShaderStageCreateInfo& shader_stage_info
 		                    , vk::PipelineCreateFlags flags={}
-		                    )-> vk::Pipeline;
+		                    )-> vk::ResultValue<vk::Pipeline>;
 		auto instance()-> vuh::Instance& { return _instance; }
 		auto releaseComputeCmdBuffer()-> vk::CommandBuffer;
-		
+
 	private: // helpers
 		explicit Device(vuh::Instance& instance, vk::PhysicalDevice physdevice
 		                , const std::vector<vk::QueueFamilyProperties>& families);

src/include/vuh/program.hpp

@@ -184,7 +184,7 @@ namespace vuh {
 				o._shader = nullptr; //
 			}
 
-			/// Move assignment. Releases resources allocated for current instance before taking 
+			/// Move assignment. Releases resources allocated for current instance before taking
 			/// ownership over those of the other instance.
 			ProgramBase& operator= (ProgramBase&& o) noexcept {
 				release();
@@ -193,12 +193,12 @@ namespace vuh {
 				_dsclayout  = o._dsclayout;
 				_dscpool    = o._dscpool;
 				_dscset     = o._dscset;
-				_pipecache  = o._pipecache; 
+				_pipecache  = o._pipecache;
 				_pipelayout	= o._pipelayout;
 				_pipeline   = o._pipeline;
 				_device     = o._device;
-				_batch      = o._batch;	
-			
+				_batch      = o._batch;
+
 				o._shader = nullptr;
 				return *this;
 			}
@@ -318,7 +318,7 @@ namespace vuh {
 
 			/// Initialize the pipeline.
 			/// Specialization constants interface is defined here.
-			auto init_pipeline()-> void {
+			auto init_pipeline()-> vk::Result {
 				auto specEntries = specs2mapentries(_specs);
 				auto specInfo = vk::SpecializationInfo(uint32_t(specEntries.size()), specEntries.data()
 																	, sizeof(_specs), &_specs);
@@ -327,7 +327,11 @@ namespace vuh {
 				auto stageCI = vk::PipelineShaderStageCreateInfo(vk::PipelineShaderStageCreateFlags()
 																				 , vk::ShaderStageFlagBits::eCompute
 																				 , _shader, "main", &specInfo);
-				_pipeline = _device.createPipeline(_pipelayout, _pipecache, stageCI);
+
+				VUH_TRY(_device.createPipeline(_pipelayout, _pipecache, stageCI), pipeline);
+				_pipeline = std::move(pipeline);
+
+				return vk::Result::eSuccess;
 			}
 		protected:
 			std::tuple<Spec_Ts...> _specs; ///< hold the state of specialization constants between call to specs() and actual pipeline creation
@@ -353,12 +357,15 @@ namespace vuh {
 			{}
 
 			/// Initialize the pipeline with empty specialialization constants interface.
-			auto init_pipeline()-> void {
+			auto init_pipeline()-> vk::Result {
 				auto stageCI = vk::PipelineShaderStageCreateInfo(vk::PipelineShaderStageCreateFlags()
 																				 , vk::ShaderStageFlagBits::eCompute
 																				 , _shader, "main", nullptr);
 
-				_pipeline = _device.createPipeline(_pipelayout, _pipecache, stageCI);
+				VUH_TRY(_device.createPipeline(_pipelayout, _pipecache, stageCI), pipeline);
+				_pipeline = std::move(pipeline);
+
+				return vk::Result::eSuccess;
 			}
 		}; // class SpecsBase
 	} // namespace detail

src/include/vuh/utils.h

@@ -3,6 +3,13 @@
 #include <stdint.h>
 #include <vector>
 
+#define VUH_TRY(expression, identifier) \
+auto maybe_##identifier = (expression); \
+if((maybe_##identifier).result != vk::Result::eSuccess) \
+	return (maybe_##identifier).result; \
+auto identifier = std::move((maybe_##identifier).value)
+
+
 namespace vuh {
 	/// Typelist. That is all about it.
 	template<class... Ts> struct typelist{};