VkDescriptorSet динамика превышения c UBO - PullRequest
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VkDescriptorSet динамика превышения c UBO

0 голосов
/ 05 мая 2020

Я пытаюсь реализовать динамический c однородный буферный объект в моем проекте, взяв этот код в качестве примера. Я новичок в API, я сделал ядро ​​программы, следуя этому руководству . На данный момент я застрял с этой проблемой: 

validation layer: VkDescriptorSet 0x42bf70000000032[] bound as set #0 encountered the following validation error at vkCmdDrawIndexed() time: Dynamic descriptor in binding #2 index 0 uses buffer 9A90CE000000002B with dynamic offset 768 combined with offset 0 and range 32000 that oversteps the buffer size of 32000.

Ошибка возникает для каждого случая из этого для l oop (from createCommandBuffers ()) (кроме первого): 

for (uint32_t j = 0; j < OBJECT_INSTANCES; j++)
        {
            uint32_t dynamicOffset = j * static_cast<uint32_t>(dynamicAlignment);
            std::cout << dynamicOffset << std::endl;
            vkCmdBindDescriptorSets(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets[i], 1, &dynamicOffset);

            vkCmdDrawIndexed(commandBuffers[i], static_cast<uint32_t>(indices.size()), 1, 0, 0, 0);
            std::cout << "done" << std::endl;
        }

(dynamicOffset кажется правильным и хорошо увеличивается на 256)

Я действительно не понимаю, что я сделал не так ... У кого-то есть идея?

Как VkDescriptorSets создаются: 

    void createDescriptorSets() {
    std::vector<VkDescriptorSetLayout> layouts(swapChainImages.size(), descriptorSetLayout);
    VkDescriptorSetAllocateInfo allocInfo = {};
    allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
    allocInfo.descriptorPool = descriptorPool;
    allocInfo.descriptorSetCount = static_cast<uint32_t>(swapChainImages.size());
    allocInfo.pSetLayouts = layouts.data();

    descriptorSets.resize(swapChainImages.size());
    if (vkAllocateDescriptorSets(device, &allocInfo, descriptorSets.data()) != VK_SUCCESS) {
        throw std::runtime_error("failed to allocate descriptor sets!");
    }

    size_t dubo_size = OBJECT_INSTANCES * dynamicAlignment;

    std::cout << dubo_size << std::endl;

    for (size_t i = 0; i < swapChainImages.size(); i++) {
        VkDescriptorBufferInfo uniformBufferInfo = {};
        uniformBufferInfo.buffer = uniformBuffers[i];
        uniformBufferInfo.offset = 0;
        uniformBufferInfo.range = sizeof(UniformBufferObject);

        VkDescriptorImageInfo imageInfo{};
        imageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
        imageInfo.imageView = textureImageView;
        imageInfo.sampler = textureSampler;

        VkDescriptorBufferInfo dynamicUniformBufferInfo = {};
        dynamicUniformBufferInfo.buffer = dynamicUniformBuffers[i];
        dynamicUniformBufferInfo.offset = 0;
        dynamicUniformBufferInfo.range = dubo_size;

        std::array<VkWriteDescriptorSet, 3> descriptorWrites{};

        descriptorWrites[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
        descriptorWrites[0].dstSet = descriptorSets[i];
        descriptorWrites[0].dstBinding = 0;
        descriptorWrites[0].dstArrayElement = 0;
        descriptorWrites[0].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
        descriptorWrites[0].descriptorCount = 1;
        descriptorWrites[0].pBufferInfo = &uniformBufferInfo;

        descriptorWrites[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
        descriptorWrites[1].dstSet = descriptorSets[i];
        descriptorWrites[1].dstBinding = 1;
        descriptorWrites[1].dstArrayElement = 0;
        descriptorWrites[1].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
        descriptorWrites[1].descriptorCount = 1;
        descriptorWrites[1].pImageInfo = &imageInfo;

        descriptorWrites[2].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
        descriptorWrites[2].dstSet = descriptorSets[i];
        descriptorWrites[2].dstBinding = 2;
        descriptorWrites[2].dstArrayElement = 0;
        descriptorWrites[2].descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC;
        descriptorWrites[2].descriptorCount = 1;
        descriptorWrites[2].pBufferInfo = &dynamicUniformBufferInfo;

        vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);

    }
}

Как создаются буферы: 

    void createDynamicUniformBuffers()
{
    VkPhysicalDeviceProperties prop;
    vkGetPhysicalDeviceProperties(physicalDevice, &prop);
    size_t minUboAlignment = prop.limits.minUniformBufferOffsetAlignment;
    dynamicAlignment = sizeof(glm::mat4);
    if (minUboAlignment > 0) {
        dynamicAlignment = (dynamicAlignment + minUboAlignment - 1) & ~(minUboAlignment - 1);
    }

    VkDeviceSize bufferSize = OBJECT_INSTANCES * dynamicAlignment;

    uboDataDynamic.model = (glm::mat4*)alignedAlloc(bufferSize, dynamicAlignment);
    assert(uboDataDynamic.model);

    std::cout << "minUniformBufferOffsetAlignment = " << minUboAlignment << std::endl;
    std::cout << "dynamicAlignment = " << dynamicAlignment << std::endl;

    dynamicUniformBuffers.resize(swapChainImages.size());
    dynamicUniformBuffersMemory.resize(swapChainImages.size());

    for (size_t i = 0; i < swapChainImages.size(); i++) {
        createBuffer(bufferSize, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, dynamicUniformBuffers[i], dynamicUniformBuffersMemory[i]);
    }

}

И, наконец, и еще немного терминала: 

minUniformBufferOffsetAlignment = 256
dynamicAlignment = 256
32000
0
done
256
validation layer: VkDescriptorSet 0x42bf70000000032[] bound as set #0 encountered the following validation error at vkCmdDrawIndexed() time: Dynamic descriptor in binding #2 index 0 uses buffer 9A90CE000000002B with dynamic offset 256 combined with offset 0 and range 32000 that oversteps the buffer size of 32000.
done
512
validation layer: VkDescriptorSet 0x42bf70000000032[] bound as set #0 encountered the following validation error at vkCmdDrawIndexed() time: Dynamic descriptor in binding #2 index 0 uses buffer 9A90CE000000002B with dynamic offset 512 combined with offset 0 and range 32000 that oversteps the buffer size of 32000.
done
768
validation layer: VkDescriptorSet 0x42bf70000000032[] bound as set #0 encountered the following validation error at vkCmdDrawIndexed() time: Dynamic descriptor in binding #2 index 0 uses buffer 9A90CE000000002B with dynamic offset 768 combined with offset 0 and range 32000 that oversteps the buffer size of 32000.
done
1024
validation layer: VkDescriptorSet 0x42bf70000000032[] bound as set #0 encountered the following validation error at vkCmdDrawIndexed() time: Dynamic descriptor in binding #2 index 0 uses buffer 9A90CE000000002B with dynamic offset 1024 combined with offset 0 and range 32000 that oversteps the buffer size of 32000.
done
1280
validation layer: VkDescriptorSet 0x42bf70000000032[] bound as set #0 encountered the following validation error at vkCmdDrawIndexed() time: Dynamic descriptor in binding #2 index 0 uses buffer 9A90CE000000002B with dynamic offset 1280 combined with offset 0 and range 32000 that oversteps the buffer size of 32000.
done

1 Ответ

1 голос
/ 06 мая 2020

Исправлено: Диапазон, указанный в VkDescriptorBufferInfo для динамического c UBO, был проблемой. Работает при использовании вместо этого dynamicUniformBufferInfo.range = VK_WHOLE_SIZE.

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