完成顶点缓冲区输入描述创建
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c6d688a055
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7e7f530f3f
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@ -954,12 +954,16 @@ void HelloTriangleApplication::createGraphicPipeline()
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VkPipelineShaderStageCreateInfo shaderStages[] = { vertShaderStageInfo,fragShaderStageInfo };
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//顶点输入
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auto bindingDescription = Vertex::getBindingDescription();
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auto attributeDescriptions = Vertex::getAttributeDescriptions();
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VkPipelineVertexInputStateCreateInfo vertexInputInfo{};
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vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
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vertexInputInfo.vertexBindingDescriptionCount = 0;
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vertexInputInfo.pVertexBindingDescriptions = nullptr;
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vertexInputInfo.vertexAttributeDescriptionCount = 0;
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vertexInputInfo.pVertexAttributeDescriptions = nullptr;
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vertexInputInfo.vertexBindingDescriptionCount = 1;
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vertexInputInfo.pVertexBindingDescriptions = &bindingDescription;
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vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(attributeDescriptions.size());
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vertexInputInfo.pVertexAttributeDescriptions = attributeDescriptions.data();
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//使用动态状态并保留视口和剪刀裁剪状态
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@ -1177,4 +1181,27 @@ int main()
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return EXIT_SUCCESS;
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}
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VkVertexInputBindingDescription HelloTriangleApplication::Vertex::getBindingDescription()
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{
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VkVertexInputBindingDescription bindingDescription{};
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bindingDescription.binding = 0;
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bindingDescription.stride = sizeof(Vertex);
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bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
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return bindingDescription;
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}
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std::array<VkVertexInputAttributeDescription,2> HelloTriangleApplication::Vertex::getAttributeDescriptions()
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{
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std::array<VkVertexInputAttributeDescription,2> attributeDescriptions{};
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attributeDescriptions[0].binding = 0;
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attributeDescriptions[0].location = 0;
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attributeDescriptions[0].format = VK_FORMAT_R32G32_SFLOAT;
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attributeDescriptions[0].offset = offsetof(Vertex, pos);
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attributeDescriptions[1].binding = 0;
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attributeDescriptions[1].location = 1;
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attributeDescriptions[1].format = VK_FORMAT_R32G32B32_SFLOAT;
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attributeDescriptions[1].offset = offsetof(Vertex, color);
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return attributeDescriptions;
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}
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@ -8,6 +8,7 @@
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#include<GLFW/glfw3.h>
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#include<vulkan/vulkan.h>
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#include<glm/glm.hpp>
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#include <iostream>
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#include <optional>
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#include <stdexcept>
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@ -18,6 +19,7 @@
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#include <cstdint>
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#include <limits>
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#include <algorithm>
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#include <array>
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#include <fstream>
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@ -101,6 +103,20 @@ private:
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bool framebufferResized = false;
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struct Vertex
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{
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glm::vec2 pos;
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glm::vec3 color;
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static VkVertexInputBindingDescription getBindingDescription();
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static std::array<VkVertexInputAttributeDescription, 2> getAttributeDescriptions();
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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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{{0.5f, 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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void initWindow(int Width, int Height);
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void createInstance();
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@ -1,20 +1,13 @@
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#version 450
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layout(location = 0) in vec2 inPosition;
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layout(location = 1) in vec3 inColor;
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layout(location = 0) out vec3 fragColor;
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vec2 positions[3] = vec2[](
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vec2(0.0f, -0.5f),
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vec2(0.5f, 0.5f),
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vec2(-0.5f, 0.5f)
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);
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vec3 colors[3] = vec3[](
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vec3(1.0,0.0,0.0),
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vec3(0.0,1.0,0.0),
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vec3(0.0,0.0,1.0)
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);
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void main(){
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gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
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fragColor = colors[gl_VertexIndex];
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gl_Position = vec4(inPosition, 0.0, 1.0);
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fragColor = inColor;
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}
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