fix all Vulkan validation errors in example 5, except the ImageView dying.

Author: devshgraphicsprogramming

examples_tests/05.NablaTutorialExample/main.cpp

@@ -296,7 +296,7 @@ class NablaTutorialExampleApp : public ApplicationBase
 
 			IGPUBuffer::SCreationParams creationParams = {};
 			creationParams.canUpdateSubRange = true;
-			creationParams.usage = asset::IBuffer::EUF_UNIFORM_BUFFER_BIT;
+			creationParams.usage = core::bitflag(asset::IBuffer::EUF_UNIFORM_BUFFER_BIT)|asset::IBuffer::EUF_TRANSFER_DST_BIT;
 			IDriverMemoryBacked::SDriverMemoryRequirements memReq;
 			memReq.vulkanReqs.size = sizeof(SBasicViewParameters);
 			memReq.vulkanReqs.alignment = physicalDevice->getLimits().UBOAlignment;
@@ -459,7 +459,10 @@ class NablaTutorialExampleApp : public ApplicationBase
 		auto& fence = frameComplete[resourceIx];
 
 		if (fence)
-			while (logicalDevice->waitForFences(1u, &fence.get(), false, MAX_TIMEOUT) == video::IGPUFence::ES_TIMEOUT) {}
+		{
+			logicalDevice->blockForFences(1u,&fence.get());
+			logicalDevice->resetFences(1u,&fence.get());
+		}
 		else
 			fence = logicalDevice->createFence(static_cast<video::IGPUFence::E_CREATE_FLAGS>(0));
 
@@ -510,6 +513,31 @@ class NablaTutorialExampleApp : public ApplicationBase
 		viewport.width = WIN_W;
 		viewport.height = WIN_H;
 		commandBuffer->setViewport(0u, 1u, &viewport);
+		VkRect2D scissor;
+		scissor.offset = {0u,0u};
+		scissor.extent = {WIN_W,WIN_H};
+		commandBuffer->setScissor(0u,1u,&scissor);
+
+		const auto viewProjection = camera.getConcatenatedMatrix();
+		core::matrix3x4SIMD modelMatrix;
+		modelMatrix.setRotation(nbl::core::quaternion(0, 1, 0));
+
+		auto mv = core::concatenateBFollowedByA(camera.getViewMatrix(), modelMatrix);
+		auto mvp = core::concatenateBFollowedByA(viewProjection, modelMatrix);
+		core::matrix3x4SIMD normalMat;
+		mv.getSub3x3InverseTranspose(normalMat);
+
+		/*
+			Updating UBO for basic view parameters and sending
+			updated data to staging buffer that will redirect
+			the data to graphics card - to vertex shader.
+		*/
+
+		SBasicViewParameters uboData;
+		memcpy(uboData.MV, mv.pointer(), sizeof(mv));
+		memcpy(uboData.MVP, mvp.pointer(), sizeof(mvp));
+		memcpy(uboData.NormalMat, normalMat.pointer(), sizeof(normalMat));
+		commandBuffer->updateBuffer(gpuubo.get(), 0ull, gpuubo->getSize(), &uboData);
 
 		swapchain->acquireNextImage(MAX_TIMEOUT, imageAcquire[resourceIx].get(), nullptr, &acquiredNextFBO);
 
@@ -531,30 +559,8 @@ class NablaTutorialExampleApp : public ApplicationBase
 			beginInfo.renderArea = area;
 			beginInfo.clearValues = clear;
 		}
-
 		commandBuffer->beginRenderPass(&beginInfo, nbl::asset::ESC_INLINE);
 
-		const auto viewProjection = camera.getConcatenatedMatrix();
-		core::matrix3x4SIMD modelMatrix;
-		modelMatrix.setRotation(nbl::core::quaternion(0, 1, 0));
-
-		auto mv = core::concatenateBFollowedByA(camera.getViewMatrix(), modelMatrix);
-		auto mvp = core::concatenateBFollowedByA(viewProjection, modelMatrix);
-		core::matrix3x4SIMD normalMat;
-		mv.getSub3x3InverseTranspose(normalMat);
-
-		/*
-			Updating UBO for basic view parameters and sending
-			updated data to staging buffer that will redirect
-			the data to graphics card - to vertex shader.
-		*/
-
-		SBasicViewParameters uboData;
-		memcpy(uboData.MV, mv.pointer(), sizeof(mv));
-		memcpy(uboData.MVP, mvp.pointer(), sizeof(mvp));
-		memcpy(uboData.NormalMat, normalMat.pointer(), sizeof(normalMat));
-		commandBuffer->updateBuffer(gpuubo.get(), 0ull, gpuubo->getSize(), &uboData);
-
 		/*
 			Binding the most important objects needed to
 			render anything on the screen with textures: