95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
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#pragma once
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#include <vulkan/vulkan.h>
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#include <array>
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#include <vector>
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#define GLM_FORCE_RADIAN
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#define GLM_FORCE_DEPTH_ZERO_TO_ONE
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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// Global namespace for all classes to do with geometry in a level.
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namespace Geo {
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// The core components of a given mesh.
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enum MeshType {
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Triangle, // A construction of triangles
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Quad, // A construction of quads
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Cube, // A single Cube.
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Sphere // A single Sphere.
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};
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// Contains standard uniforms for shader files.
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struct UniformBufferObject {
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glm::mat4 model; // Model transform matrix.
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glm::mat4 view; // View matrix.
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glm::mat4 proj; // Projection matrix.
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};
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// All of the metadata involved with a vertex.
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struct Vertex {
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glm::vec3 position; // XYZ coordinates of the vertex's position.
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glm::vec3 normal; // Unit vector pointing away from the outer surface of the vertex.
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glm::vec3 color; // The color of the vertex.
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glm::vec2 texture; // The u/v coordinates of this vertex in the bound texture.
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// How fast should vertex data be read from RAM?
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static VkVertexInputBindingDescription getBindingDesc() {
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VkVertexInputBindingDescription desc = {};
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desc.binding = 0;
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desc.stride = sizeof(Vertex);
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desc.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
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return desc;
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}
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// How should vertexes be handled?
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static std::array<VkVertexInputAttributeDescription, 4> getAttributeDesc() {
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std::array<VkVertexInputAttributeDescription, 4> descs = {};
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// Attribute 0; position. Location 0, 3x 32-bit float.
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descs[0].binding = 0;
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descs[0].location = 0;
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descs[0].format = VK_FORMAT_R32G32B32_SFLOAT;
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descs[0].offset = offsetof(Vertex, position);
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// Attribute 1; normal. Location 1, 3x 32-bit float.
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descs[1].binding = 0;
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descs[1].location = 1;
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descs[1].format = VK_FORMAT_R32G32B32_SFLOAT;
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descs[1].offset = offsetof(Vertex, normal);
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// Attribute 2; color. Location 2, 3x 32-bit float.
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descs[2].binding = 0;
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descs[2].location = 2;
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descs[2].format = VK_FORMAT_R32G32B32_SFLOAT;
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descs[2].offset = offsetof(Vertex, color);
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// Attribute 3; texture. Location 3, 2x 32-bit float.
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descs[3].binding = 0;
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descs[3].location = 3;
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descs[3].format = VK_FORMAT_R32G32_SFLOAT;
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descs[3].offset = offsetof(Vertex, texture);
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return descs;
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}
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};
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// Contains data about a given Mesh.
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class Mesh {
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public:
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// Pre-load the data for a triangle into the given buffers.
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static void setTriData(std::vector<Vertex>& vertices, std::vector<uint32_t>& indices);
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// Pre-load the data for a quad into the given buffers.
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static void setQuadData(std::vector<Vertex>& vertices, std::vector<uint32_t>& indices);
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// Pre-load the data for a cube into the given buffers.
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static void setCubeData(std::vector<Vertex>& vertices, std::vector<uint32_t>& indices);
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// Pre-load the data for a sphere into the given buffers.
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static void setSphereData(std::vector<Vertex>& vertices, std::vector<uint32_t>& indices);
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};
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}
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