编辑： 这是valgrind的输出：
==6785==
==6785== Process terminating with default action of signal 11 (SIGSEGV)
==6785== Access not within mapped region at address 0xE0
==6785== at 0xA138542: cvdescriptorset::DescriptorSet::ValidateDrawState(std::map<unsigned int, descriptor_req, std::less<unsigned int>, std::allocator<std::pair<unsigned int const, descriptor_req> > > const&, std::vector<unsigned int, std::allocator<unsigned int> > const&, std::string*) const (in /home/user/VulkanSDK/1.0.37.0/x86_64/lib/libVkLayer_core_validation.so)
==6785== by 0xA0D9A06: core_validation::validate_and_update_draw_state(core_validation::layer_data*, GLOBAL_CB_NODE*, bool, VkPipelineBindPoint, char const*) (in /home/user/VulkanSDK/1.0.37.0/x86_64/lib/libVkLayer_core_validation.so)
==6785== by 0xA0EE4F3: core_validation::CmdDrawIndexed(VkCommandBuffer_T*, unsigned int, unsigned int, unsigned int, int, unsigned int) (in /home/user/VulkanSDK/1.0.37.0/x86_64/lib/libVkLayer_core_validation.so)
==6785== by 0xA8B6F23: object_tracker::CmdDrawIndexed(VkCommandBuffer_T*, unsigned int, unsigned int, unsigned int, int, unsigned int) (in /home/user/VulkanSDK/1.0.37.0/x86_64/lib/libVkLayer_object_tracker.so)
==6785== by 0xB3AD421: threading::CmdDrawIndexed(VkCommandBuffer_T*, unsigned int, unsigned int, unsigned int, int, unsigned int) (in /home/user/VulkanSDK/1.0.37.0/x86_64/lib/libVkLayer_threading.so)
==6785== by 0x13B147: VulkanRenderer::createCommandBuffers(ObjectInRAM*, ObjectInRAM*) (in /home/wobbi/git/Code/Implementierungen/Vulkan/VulkanTest)
==6785== by 0x13F1FF: VulkanRenderer::mainLoop() (in /home/wobbi/git/Code/Implementierungen/Vulkan/VulkanTest)
==6785== by 0x110716: main (in /home/wobbi/git/Code/Implementierungen/Vulkan/VulkanTest)
我在Vulkan应用程序中以某种方式设法获得了vkCmdDrawIndexed中的段错误。 我想做的是想画两个物体。第一个只有一次和第二个对象在不同的位置可变次数（没有实例化）。我通过pushConstants获得了不同的位置，一切正常。
当按下按钮时，我想增加第二个对象的绘制次数，所以我等到设备空闲，然后用新的绘制调用次数重新创建命令缓冲区。
但是在重新创建命令缓冲区时，我遇到了一个段错误： vkCmdDrawIndexed（commandBuffers [i]，obj2-＆gt; indices.size（），1,0,0,0）;
我的代码基于Vulkan-Tutorial.com，所以我只是再次调用createCommandBuffers（） - 函数。
我分配了我的游泳池： poolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
非常感谢任何有关我为什么会遇到段错误的帮助
代码：
void VulkanRenderer::mainLoop()
{
float lastTextureChange = glfwGetTime();
float lastFPSUpdate = glfwGetTime();
int numFrames = 0;
int lastGPULoad = 1;
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
//adjust camera values
//if frames are further apart then movement between frames has to be faster
float currentFrame = glfwGetTime();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
do_movement();
updateUniformBuffer(glm::vec3(0.0f), 0.1f);
if(lastGPULoad != GPULoad)
{
lastGPULoad = GPULoad;
recreateSwapChain();
}
drawFrame();
}
vkDeviceWaitIdle(device);
glfwDestroyWindow(window);
}
void VulkanRenderer::recreateSwapChain()
{
vkDeviceWaitIdle(device);
createSwapChain();
createImageViews();
createRenderPass();
createGraphicsPipeline();
createDepthResources();
createFramebuffers();
createCommandBuffers(&male, &cube);
}
void VulkanRenderer::createCommandBuffers(ObjectInRAM* obj, ObjectInRAM* obj2)
{
//check if old command buffers are still around and free them
if (commandBuffers.size() > 0)
{
vkFreeCommandBuffers(device, commandPool, commandBuffers.size(), commandBuffers.data());
}
commandBuffers.resize(swapChainFramebuffers.size());
std::cout <<"creating new command buffers:" <<commandBuffers.size() <<std::endl;
VkCommandBufferAllocateInfo allocInfo = {};
allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
allocInfo.commandPool = commandPool;
allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
allocInfo.commandBufferCount = (uint32_t) commandBuffers.size();
if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) != VK_SUCCESS) {
throw std::runtime_error("failed to allocate command buffers!");
}
for (size_t i = 0; i < commandBuffers.size(); i++) {
VkCommandBufferBeginInfo beginInfo = {};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
beginInfo.pInheritanceInfo = nullptr; // Optional
vkBeginCommandBuffer(commandBuffers[i], &beginInfo);
VkRenderPassBeginInfo renderPassInfo = {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassInfo.renderPass = renderPass;
renderPassInfo.framebuffer = swapChainFramebuffers[i];
renderPassInfo.renderArea.offset = {0};
renderPassInfo.renderArea.extent = swapChainExtent;
std::array<VkClearValue, 2> clearValues = {};
clearValues[0].color = {0.0f, 0.0f, 0.0f, 1.0f};
clearValues[1].depthStencil = {1.0f, 0};
renderPassInfo.clearValueCount = clearValues.size();
renderPassInfo.pClearValues = clearValues.data();
updateUniformBuffer(glm::vec3(80.0f, 80.0f, 80.0f), 10.0f);
vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
pushUBO.model = glm::mat4();
pushUBO.model = glm::scale(pushUBO.model, glm::vec3(1.0f));
// Submit via push constant (rather than a UBO)
vkCmdPushConstants(
commandBuffers[i],
pipelineLayout,
VK_SHADER_STAGE_VERTEX_BIT,
0,
sizeof(pushUBO),
&pushUBO
);
vkCmdBindPipeline(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipeline);
vkCmdBindDescriptorSets(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
//Binding vertex buffers
VkBuffer vertexBuffers[] = {obj2->vertexBuffer};
VkDeviceSize offsets[] = {0};
vkCmdBindVertexBuffers(commandBuffers[i], 0, 1, vertexBuffers, offsets);
vkCmdBindIndexBuffer(commandBuffers[i], obj2->indexBuffer, 0, VK_INDEX_TYPE_UINT32);
std::cout <<"bound index: " <<obj2->indices.size() <<std::endl;
vkCmdDrawIndexed(commandBuffers[i], obj2->indices.size(), 1,0,0,0);
std::cout <<"before crowd cmd recording " <<std::endl;
//render crowd
vertexBuffers[0] = obj->vertexBuffer;
vkCmdBindVertexBuffers(commandBuffers[i], 0, 1, vertexBuffers, offsets);
vkCmdBindIndexBuffer(commandBuffers[i], obj->indexBuffer, 0, VK_INDEX_TYPE_UINT32);
int drawCmdCounter = 0;
while(drawCmdCounter < GPULoad)
{
pushUBO.model = glm::mat4();
pushUBO.model = glm::translate(pushUBO.model, glm::vec3(drawCmdCounter*5.0f, 0.0f,0.0f));
// Submit via push constant (rather than a UBO)
vkCmdPushConstants(
commandBuffers[i],
pipelineLayout,
VK_SHADER_STAGE_VERTEX_BIT,
0,
sizeof(pushUBO),
&pushUBO
);
vkCmdDrawIndexed(commandBuffers[i], obj->indices.size(), 1,0,0,0);
drawCmdCounter++;
}
vkCmdEndRenderPass(commandBuffers[i]);
if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to record command buffer!");
}
}
}
答案 0 :(得分：0)
在调用堆栈中，它看起来像是层内的崩溃。
1）（始终）使用updated SDK！你知道，我可以看到你使用的是过时的SDK。在撰写本文时，有四个较新版本，可能还有bambillion错误修正。
2）尝试关闭图层来运行它。这将验证它是图层中的错误。
3）如果1）没有帮助，2）你确定它是图层，那么你可以尝试trunk version层（或者至少扫描相关内容的最新提交），然后查找现有问题或报告新问题。
4）通过设置SDK/Source/lib变量，您可以在VK_LAYER_PATH中使用图层的调试版本。这样就可以对图层本身进行断点/步骤调试。