Pipeline

struct PipelineConfigInfo {};

//pipeline configuration

LvePipeline

|
|PUBLIC:
|—constructor (device, vert and frag files, config info)
|—destroucctor
|—protection from copy
|—pipeline config ingo (static)(default pipeline fig info)
|
|PRIVATE:
|—read file (spv into buffer)
|—createGraphicPipeline
|—createShaderModule (create shading module)
|
|
|MEMBERS:
|lve device
|VkPipeline (graphic pipeline)
|VkShaderModule (vert and frag)

---

VK_SUCCESS

enum type, VK_SUCCESS =0

if (vkCreateShaderModule( lveDevice.device() , &createInfo, nullptr, shaderModule) != VK_SUCCESS) -----> if creating not success

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Protection

LvePipeline(const LvePipeline& ) = delete;
删除拷贝构造函数：当我们要基于一个已有的对象创建一个新对象时，毁掉用这个函数

LvePipeline pipeline1(…); // 正常构造
LvePipeline pipeline2 = pipeline1; // 这里会调用拷贝构造函数

• const : during the copy, no change original object

• LvePipeline& : uisng referece, so no copy

Purpose: DONT ALLOW anyone copy this an existed pipeline object. each pipeline object will have different memory address (two individual houses)

ClassName(const ClassName& ) = delete

---

VkRect2D

Structure specifying a two-dimensional subregion
where can be draw when rendering (frag a render area)

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VkPipelineLayout

• This layout represents the interface layout between the graphic pipeline and shader resources.

• it describe how descriptors (like textures, uniform buffer etc) are organized and bound to the pipeline.

• is a handle, pointer or reference to GPU resources\

pipelineLayout = nullptr;

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VkRenderPass:

Allow you have multiple subpass. define render pass. VkRenderPass represents a rendering process definition. it describe how different phases(called subpasses) interact with frame buffers, including how color, depth, are handled

---

Subpass:
subpass means a render stage, for example one subpass is writing to color buffer, one is using depth buffer.

---

PipelineConfigInfo

struct PipelineConfigInfo {

VkPipelineInputAssemblyStateCreateInfo inputAssemblyInfo;

};

PipelineConfigInfo LvePipeline::defaultPipelineConfigInfo(uint32_t width, uint32_t height){

PipelineConfigInfo configInfo{};
//inputAssemblyInfo is VkPipelineInputAssemblyStateCreateInfo

configInfo.inputAssemblyInfo.sType

configInfo : data tyoe is PipelineConfigInfo

configInfo{} : initialize —>execute VkPipelineInputAssemblyStateCreateInfo inputAssemblyInfo; so create a inputAssemblyInfo

configInfo(PipelineConfigInfo DATATYPE) is a folder, in this folder including inputAssemblyInfo also including other data type like B, C, D … , then we want to set configInfo.inputAssemblyInfo.sType

configInfo.inputAssemblyInfo.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;

Tell the vulkan we want it triangle, not a line(for example)

• By default using Triangle List: every 3 vertices are grouped as a triangle

• ==Another option is Triangle Strip: for every vertices, use the previous two vertices and form a traingle , for example: v1, v2, (v3, v4, v5 ) v6, v7. Then next time become v1, v2, v3, (v4, v5, v6), v7.

• other option: VkPrimitiveTopology

primitiveRestartEnable:

primtive restart allows you break a series of connected primitive (eg. a strip of triangles) using a special “restart index”.

• Enable: no triangle strip
• Disable: triangle strip

VkPolygonMode:

VK_POLYGON_MODE_FILL = 0,
VK_POLYGON_MODE_LINE = 1,
VK_POLYGON_MODE_POINT = 2,