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vulkanTutorial
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完成顶点缓存创建

master
InkSoul 2024-03-14 14:58:45 +08:00
parent 7e7f530f3f
commit b19c7666b2
2 changed files with 67 additions and 1 deletions
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59
VulkanTutorial.cpp
View File

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

9
VulkanTutorial.h
View File

@ -112,11 +112,14 @@ private:
};
const std::vector<Vertex> vertices = {
{{0.0f, -0.5f}, {1.0f, 0.0f, 0.0f}},
{{0.0f, -0.5f}, {1.0f, 1.0f, 1.0f}},
{{0.5f, 0.5f}, {0.0f, 1.0f, 0.0f}},
{{-0.5f, 0.5f}, {0.0f, 0.0f, 1.0f}}
};
VkBuffer vertexBuffer;
VkDeviceMemory vertexBufferMemory;
void initWindow(int Width, int Height);
void createInstance();
@ -175,6 +178,10 @@ private:
void createCommandPool();
void createVertexBuffer();
uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties);
void createCommandBuffer();
void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex);