70 lines
1.9 KiB
Zig
70 lines
1.9 KiB
Zig
const std = @import("std");
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const vk = @import("vulkan.zig");
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const gltf = @import("gltf.zig");
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const Allocator = std.mem.Allocator;
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const c = vk.c;
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const Mesh = @This();
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vertex_buffer: i32,
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index_buffer: u32,
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index_count: u32,
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pub const Vertex = struct {
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position: [3]f32,
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normal: [3]f32,
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uv: [2]f32,
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pub fn init(x: f32, y: f32, z: f32, normal_x: f32, normal_y: f32, normal_z: f32, u: f32, v: f32) Vertex {
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return Vertex{
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.position = .{ x, y, z },
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.normal = .{ normal_x, normal_y, normal_z },
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.uv = .{u, v},
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};
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}
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pub fn bindingDescription() vk.c.VkVertexInputBindingDescription {
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const binding_description: vk.c.VkVertexInputBindingDescription = .{
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.binding = 0,
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.stride = @sizeOf(Vertex),
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.inputRate = vk.c.VK_VERTEX_INPUT_RATE_VERTEX,
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};
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return binding_description;
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}
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pub fn attributeDescriptions() []const c.VkVertexInputAttributeDescription {
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const attributes: []const c.VkVertexInputAttributeDescription = &.{
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.{
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.location = 0,
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.binding = 0,
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.format = c.VK_FORMAT_R32G32B32_SFLOAT,
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.offset = 0,
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},
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.{
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.location = 1,
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.binding = 0,
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.format = c.VK_FORMAT_R32G32B32_SFLOAT,
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.offset = 12,
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},
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.{
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.location = 2,
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.binding = 0,
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.format = c.VK_FORMAT_R32G32_SFLOAT,
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.offset = 24,
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},
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};
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return attributes;
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}
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};
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pub fn init(allocator: Allocator, device: anytype) !Mesh {
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const vertex_buffer = try Mesh.createVertexBuffer(allocator, device);
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const index_buffer = try Mesh.createIndexBuffer(allocator, device);
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return Mesh{
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.vertex_buffer = vertex_buffer,
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.index_buffer = index_buffer,
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};
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}
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