Texture Arrays

prepare

loadAssets: 加载纹理
- ktx_uint8_t *textureData 从读图API中将纹理读入
- vkCreateBuffer: 创建stagingBuffer
- vkGetBufferMemoryRequirements: 申请buffer使用的内存
- vkAllocateMemory: 分配内存
- vkBindBufferMemory: 绑定内存
- vkMapMemory – memcpy – vkUnmapMemory: 将纹理信息复制到 host local staging buffer (specific layout)
- std::vector bufferCopyRegions: 这里上节是绑定 mipmap 的, 这里 Texture Arrays 也是根据 layerCount 写入vector中.
- vkCreateImage: Create optimal tiled target image on the device
  - 其中主要的是 imageCreateInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
- vkGetImageMemoryRequirements: 申请内存
- vkAllocateMemory: 分配内存
- vkBindImageMemory: 绑定资源
- createCommandBuffer：创建复制命令
- VkImageSubresourceRange: layerCount 定义为数组的个数
- setImageLayout: 即 imageMemoryBarrier
- vkCmdCopyBufferToImage：Copy mip levels from staging buffer
- setImageLayout：从TRANSFER Barrier 到 FRAGMENT_SHADER
- flushCommandBuffer
- vkCreateSampler
- vkCreateImageView
- vkFreeMemory：Clean up staging resources
- vkDestroyBuffer：Clean up staging resources
- ktxTexture_Destroy：释放从磁盘读取图片的内存
generateCube：创建一个立方体
prepareUniformBuffers
- createBuffer
  - 创建 UniformBuffer: 根据纹理数组个数申请 buffer size
  - vkMapMemory – memcpy – vkUnmapMemory: 更新 buffer 中数据
- updateUniformBuffersCamera
setupDescriptorSetLayout
preparePipelines
setupDescriptorPool

setupDescriptorSet: 这里需要对纹理数据描述符进行绑定

   // Image descriptor for the texture arrayVkDescriptorImageInfo textureDescriptor =vks::initializers::descriptorImageInfo(textureArray.sampler,textureArray.view,textureArray.imageLayout);

buildCommandBuffers

shader 中获取Texture Array

layout (binding = 1) uniform sampler2DArray samplerArray;
-------------------------
outFragColor = texture(samplerArray, inUV);

render

draw
updateUniformBuffersCamera

小结

Texture Array 与 mipmap 绑定相似。不同的是Texture Array 还需在setupDescriptorSet 中进行设置。这样 shader 才能使用 sampler2DArray 获取纹理。

Cube Map Textures

prepare

loadAssets:
- 加载模型
- 加载cubmap
  - ktx_uint8_t *textureData 从读图API中将纹理读入
  - 创建 staging buffer：步骤都一样这里不重复了
  - std::vector bufferCopyRegions: 这里上节是绑定 mipmap 的, 这里 Texture Arrays 也是根据 layerCount 写入vector中.
  - vkCreateImage: Create optimal tiled target image on the device
    - 其中主要的是 imageCreateInfo.arrayLayers = 6;
    - imageCreateInfo.flags = VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT;
  - vkGetImageMemoryRequirements - vkAllocateMemory - vkBindImageMemory
  - createCommandBuffer：创建复制命令
  - bufferCopyRegion：中需要cub的6个纹理以及它的mipmap
  - VkImageSubresourceRange: layerCount 定义为6
  - setImageLayout: 即 imageMemoryBarrier
  - vkCmdCopyBufferToImage：Copy mip levels from staging buffer
  - setImageLayout：从TRANSFER Barrier 到 FRAGMENT_SHADER
  - flushCommandBuffer
  - vkCreateSampler
  - vkCreateImageView
    - view.viewType = VK_IMAGE_VIEW_TYPE_CUBE;
    - view.subresourceRange.layerCount = 6;
    - view.subresourceRange.levelCount = cubeMap.mipLevels;
  - vkFreeMemory：Clean up staging resources
  - vkDestroyBuffer：Clean up staging resources
  - ktxTexture_Destroy：释放从磁盘读取图片的内存
prepareUniformBuffers
- createBuffer
- updateUniformBuffers
setupDescriptorSetLayout
preparePipelines
- 需要多加一个渲染 CUBMAP Pipeline
setupDescriptorPool

setupDescriptorSet: 这里需要对纹理数据描述符进行绑定

   // Image descriptor for the cube map textureVkDescriptorImageInfo textureDescriptor =vks::initializers::descriptorImageInfo(cubeMap.sampler,cubeMap.view,cubeMap.imageLayout);

buildCommandBuffers

shader 中获取Texture Array

layout (binding = 1) uniform samplerCube samplerCubeMap;;
-------------------------
outFragColor = texture(samplerCubeMap, inUVW);

render

draw

小结

Cube Map Textures 其实就是 6个纹理组成的Texture Array, shader 使用 samplerCube 获取纹理。

3D Textures

prepare

generateQuad
setupVertexDescriptions
prepareUniformBuffers
- createBuffer
- updateUniformBuffers
prepareNoiseTexture
- VkImageCreateInfo: .imageType = VK_IMAGE_TYPE_3D
- vkCreateImage
- vkGetImageMemoryRequirements-vkAllocateMemory-vkBindImageMemory
- vkCreateSampler
- VkImageViewCreateInfo: view.viewType = VK_IMAGE_VIEW_TYPE_3D
- vkCreateImageView
- updateNoiseTexture: 就是向纹理写入随机数据
  - stagingBuffer
    - vkCreateBuffer-vkGetBufferMemoryRequirements-vkAllocateMemory-vkBindBufferMemory
    - vkMapMemory-memcpy-vkUnmapMemory
    - createCommandBuffer
    - setImageLayout-vkCmdCopyBufferToImage-setImageLayout
    - flushCommandBuffer
- vkFreeMemory
- vkDestroyBuffer
setupDescriptorSetLayout
preparePipelines
setupDescriptorPool
setupDescriptorSet
buildCommandBuffers

shader 中获取Texture Array

layout (binding = 1) uniform sampler3D samplerColor;
-------------------------
vec4 color = texture(samplerColor, inUV);

render

draw
updateUniformBuffers

小结

3D Textures 很像Texture Array, shader 使用 sampler3D 获取纹理。

Vulkan Samples 阅读 -- Basics（四）: Texture Arrays Cube Map Textures 3D Textures相关推荐

Vulkan Samples 阅读 -- Extensions（二）
目录 Conditional Rendering prepare render shader 小结 Debug Markers Negative Viewport Height prepare ren ...
Vulkan Samples 阅读 -- Hardware Accelerated Ray Tracing（一） Basic Ray Tracing Ray Traced Shadows
目录 Basic Ray Tracing prepare render shader 小结 Ray Traced Shadows prepare render shader 小结 Basic Ray ...
深度学习论文阅读（四）：GoogLeNet《Going Deeper with Convolutions》
深度学习论文阅读(四):GoogLeNet<Going Deeper with Convolutions> Abstract 摘要 1.Introduction 引言 2. Related ...
ExtJS4 API文档阅读（四）——Data
2019独角兽企业重金招聘Python工程师标准>>> ExtJS4 API文档阅读(四)--Data 数据 Data包负责加载和保存你应用程序中的所有数据,由41个类构成,其中有三 ...
Alibaba Druid 源码阅读（四）数据库连接池中连接获取探索
Alibaba Druid 源码阅读(四) 数据库连接池中连接获取探索简介上文中分析了数据库连接池的初始化部分,接下来我们来看看获取连接部分的代码数据库连接池中连接获取下面的相关的代码,在代码 ...
Soul 网关源码阅读（四）Dubbo请求概览
Soul 网关源码阅读(四)Dubbo请求概览简介本次启动一个dubbo服务示例,初步探索Soul网关源码的Dubbo请求处理流程示例运行环境配置在Soul源码clone下来 ...
语文阅读教学“四何”问题设计
转:https://www.fx361.com/page/2019/0916/5548386.shtml "四何"问题是"是何""为何"&q ...
JS高级程序设计——阅读笔记四
JS高级程序设计--阅读笔记四第六章集合引用类型 6.1 Object 6.2 Array 6.2.1 创建数组 from()函数 6.2.2 数组空位 6.2.3 数组索引 6.2.4 检测数组 ...
Cube Map 系列之：手把手教你实现天空盒（Sky Box）
什么是天空盒 An skybox is a box with textures on it to look like the sky in all directions or rather to lo ...
四种方法使Map线程安全
四种方法使Map线程安全如果需要使 Map 线程安全,大致有这么四种方法: 1.使用 synchronized 关键字,这也是最原始的方法.代码如下 synchronized(anObject) { ...

Vulkan Samples 阅读 -- Basics（四）: Texture Arrays Cube Map Textures 3D Textures

目录

Texture Arrays

prepare

render

小结

Cube Map Textures

prepare

render

小结

3D Textures

prepare

render

小结

Vulkan Samples 阅读 -- Basics（四）: Texture Arrays Cube Map Textures 3D Textures相关推荐

最新文章

热门文章