完成顶点缓存创建
parent
7e7f530f3f
commit
b19c7666b2
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@ -121,6 +121,8 @@ void HelloTriangleApplication::initVulkan() {
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createCommandPool();
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createVertexBuffer();
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createCommandBuffer();
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createSyncObjects();
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@ -149,6 +151,9 @@ void HelloTriangleApplication::cleanup(GLFWwindow* window) {
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cleanupSwapChain();
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vkDestroyBuffer(device, vertexBuffer, nullptr);
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vkFreeMemory(device, vertexBufferMemory, nullptr);
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vkDestroyPipeline(device, graphicsPipeline, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyRenderPass(device, renderPass, nullptr);
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@ -707,6 +712,56 @@ void HelloTriangleApplication::createCommandPool()
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}
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void HelloTriangleApplication::createVertexBuffer()
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{
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VkBufferCreateInfo bufferInfo{};
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bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
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bufferInfo.size = sizeof(vertices[0]) * vertices.size();
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bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
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bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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if (vkCreateBuffer(device,&bufferInfo,nullptr,&vertexBuffer) != VK_SUCCESS)
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{
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throw std::runtime_error("failed to create vertex buffer in createVertexBuffer");
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}
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VkMemoryRequirements memRequirement;
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vkGetBufferMemoryRequirements(device, vertexBuffer, &memRequirement);
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VkMemoryAllocateInfo allocInfo{};
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allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
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allocInfo.allocationSize = memRequirement.size;
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allocInfo.memoryTypeIndex = findMemoryType(memRequirement.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
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if (vkAllocateMemory(device,&allocInfo,nullptr,&vertexBufferMemory) != VK_SUCCESS)
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{
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throw std::runtime_error("failed to allocate vertex buffer memory!");
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}
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vkBindBufferMemory(device, vertexBuffer, vertexBufferMemory, 0);
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void* data;
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vkMapMemory(device, vertexBufferMemory, 0, bufferInfo.size, 0, &data);
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memcpy(data, vertices.data(), (size_t)bufferInfo.size);
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vkUnmapMemory(device, vertexBufferMemory);
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}
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uint32_t HelloTriangleApplication::findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties)
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{
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VkPhysicalDeviceMemoryProperties memProperties;
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vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);
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for (uint32_t i = 0; i < memProperties.memoryTypeCount; i++)
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{
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if (typeFilter & (1 << i) && (memProperties.memoryTypes[i].propertyFlags & properties) == properties)
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{
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return i;
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}
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}
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throw std::runtime_error("failed to find suitable memory type !");
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}
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void HelloTriangleApplication::createCommandBuffer()
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{
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commandBuffers.resize(MAX_FRAME_IN_FLIGHT);
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@ -761,6 +816,10 @@ void HelloTriangleApplication::recordCommandBuffer(VkCommandBuffer commandBuffer
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scissor.offset = { 0,0 };
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scissor.extent = swapChainExtent;
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vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
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// bindVertexBuffer
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VkBuffer vertexBuffers[] = { vertexBuffer };
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VkDeviceSize offsets[] = { 0 };
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vkCmdBindVertexBuffers(commandBuffer, 0, 1, vertexBuffers, offsets);
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vkCmdDraw(commandBuffer, 3, 1, 0, 0);
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@ -112,11 +112,14 @@ private:
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};
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const std::vector<Vertex> vertices = {
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{{0.0f, -0.5f}, {1.0f, 0.0f, 0.0f}},
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{{0.0f, -0.5f}, {1.0f, 1.0f, 1.0f}},
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{{0.5f, 0.5f}, {0.0f, 1.0f, 0.0f}},
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{{-0.5f, 0.5f}, {0.0f, 0.0f, 1.0f}}
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};
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VkBuffer vertexBuffer;
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VkDeviceMemory vertexBufferMemory;
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void initWindow(int Width, int Height);
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void createInstance();
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@ -175,6 +178,10 @@ private:
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void createCommandPool();
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void createVertexBuffer();
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uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties);
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void createCommandBuffer();
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void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex);
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