chaotickittyasteroid/voxel-test
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add basic edge shading

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catangent 2024-12-23 18:45:07 +00:00
parent c600c82e8f
commit c19a19166b
5 changed files with 73 additions and 182 deletions
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37
src/world/chunk.zig
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@ -3,6 +3,7 @@ const raylib_helper = @import("../lib_helpers/raylib_helper.zig");
const raylib = raylib_helper.raylib;
const v3 = raylib_helper.v3;
const A7r = std.mem.Allocator;
const comptimePrint = std.fmt.comptimePrint;
const RawQuad = struct {
tile: u32,
@ -15,6 +16,24 @@ const RawQuad = struct {
height: f32,
};
const Metadata1 = packed struct {
ambient_occlusion_1: u32,
ambient_occlusion_2: u32,
ambient_occlusion_corner1: bool,
ambient_occlusion_corner2: bool,
ambient_occlusion_corner3: bool,
quad_height: u6,
quad_width: u6,
unused: u17 = 0,
unused_2: u32 = 0,
};
comptime {
if (@bitSizeOf(Metadata1) != 128) {
@compileError(comptimePrint("Metadata 1 has wrong size. Expected 128 bits, found {}", .{@bitSizeOf(Metadata1)}));
}
}
pub const Chunk = struct {
tiles: []u32,
a7r: A7r,
@ -151,6 +170,7 @@ pub const Chunk = struct {
const texcoords: [*]f32 = @ptrCast(@alignCast(raylib.MemAlloc(arr_size * 2)));
const texcoords2: [*]f32 = @ptrCast(@alignCast(raylib.MemAlloc(arr_size * 2)));
const normals: [*]f32 = @ptrCast(@alignCast(raylib.MemAlloc(arr_size * 3)));
const metadata1_packed: [*]f32 = @ptrCast(@alignCast(raylib.MemAlloc(arr_size * 4)));
for (raw_quads.items, 0..) |raw_quad, i| {
if (raw_quad.tile <= 0) continue;
@ -214,6 +234,22 @@ pub const Chunk = struct {
texcoords[12 * i + 11] = bottom_uv;
texcoords2[12 * i + 10] = 0.0;
texcoords2[12 * i + 11] = raw_quad.height;
for (0..6) |j| {
const metadata1 = Metadata1{
.ambient_occlusion_1 = 0xffffffff,
.ambient_occlusion_2 = 0xffffffff,
.ambient_occlusion_corner1 = true,
.ambient_occlusion_corner2 = true,
.ambient_occlusion_corner3 = true,
.quad_height = @intFromFloat(raw_quad.height),
.quad_width = @intFromFloat(raw_quad.width),
};
const metadata1_baked: [4]f32 = @bitCast(metadata1);
for (0..4) |k| {
metadata1_packed[24 * i + 4 * j + k] = @bitCast(@as(f32, metadata1_baked[k]));
}
}
}
var mesh = raylib.Mesh{
@ -224,6 +260,7 @@ pub const Chunk = struct {
.texcoords = texcoords,
.texcoords2 = texcoords2,
.normals = normals,
.tangents = metadata1_packed,
.vaoId = 0,
.vboId = null,