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examples/custom-renderer: cleanup docs

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-04-06 12:09:29 -07:00 • committed by Stephen Gutekanst
parent af3c1e9155
commit 5659dd6266
4 changed files with 91 additions and 58 deletions
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13
examples/custom-renderer/Renderer.zig
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@ -1,3 +1,4 @@
// TODO(important): docs
const std = @import("std");
const mach = @import("mach");
@ -21,7 +22,7 @@ pub const name = .renderer;
pub const Mod = mach.Mod(@This());
pub const components = .{
.location = .{ .type = Vec3 },
.position = .{ .type = Vec3 },
.rotation = .{ .type = Vec3 },
.scale = .{ .type = f32 },
};
@ -32,7 +33,7 @@ pub const global_events = .{
.tick = .{ .handler = tick },
};
// TODO: this shouldn't be a packed struct, it should be extern.
// TODO(important): this shouldn't be a packed struct, it should be extern.
const UniformBufferObject = packed struct {
offset: Vec3.Vector,
scale: f32,
@ -134,18 +135,18 @@ fn tick(
// Update uniform buffer
var archetypes_iter = engine.entities.query(.{ .all = &.{
.{ .renderer = &.{ .location, .scale } },
.{ .renderer = &.{ .position, .scale } },
} });
var num_entities: usize = 0;
while (archetypes_iter.next()) |archetype| {
const ids = archetype.slice(.entity, .id);
const locations = archetype.slice(.renderer, .location);
const positions = archetype.slice(.renderer, .position);
const scales = archetype.slice(.renderer, .scale);
for (ids, locations, scales) |id, location, scale| {
for (ids, positions, scales) |id, position, scale| {
_ = id;
const ubo = UniformBufferObject{
.offset = location.v,
.offset = position.v,
.scale = scale,
};
encoder.writeBuffer(renderer.state().uniform_buffer, uniform_offset * num_entities, &[_]UniformBufferObject{ubo});