zig/mach
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

module: change state to avoid undefined, remove global allocator

Browse source 
Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-04-05 17:05:48 -07:00 • committed by Stephen Gutekanst
parent 5dbf9ece3b
commit cf883f5544
11 changed files with 271 additions and 222 deletions
Download patch file Download diff file Expand all files Collapse all files

22
examples/custom-renderer/Game.zig
View file

@ -55,11 +55,11 @@ fn init(
try renderer.set(player, .location, vec3(0, 0, 0));
try renderer.set(player, .scale, 1.0);
game.state = .{
game.init(.{
.timer = try mach.Timer.start(),
.spawn_timer = try mach.Timer.start(),
.player = player,
};
});
}
// TODO(engine): remove need for returning an error here
@ -70,8 +70,8 @@ fn tick(
) !void {
// TODO(engine): event polling should occur in mach.Engine module and get fired as ECS events.
var iter = core.pollEvents();
var direction = game.state.direction;
var spawning = game.state.spawning;
var direction = game.state().direction;
var spawning = game.state().spawning;
while (iter.next()) |event| {
switch (event) {
.key_press => |ev| {
@ -98,14 +98,14 @@ fn tick(
else => {},
}
}
game.state.direction = direction;
game.state.spawning = spawning;
game.state().direction = direction;
game.state().spawning = spawning;
var player_pos = renderer.get(game.state.player, .location).?;
if (spawning and game.state.spawn_timer.read() > 1.0 / 60.0) {
var player_pos = renderer.get(game.state().player, .location).?;
if (spawning and game.state().spawn_timer.read() > 1.0 / 60.0) {
for (0..10) |_| {
// Spawn a new follower entity
_ = game.state.spawn_timer.lap();
_ = game.state().spawn_timer.lap();
const new_entity = try engine.newEntity();
try game.set(new_entity, .follower, {});
try renderer.set(new_entity, .location, player_pos);
@ -114,7 +114,7 @@ fn tick(
}
// Multiply by delta_time to ensure that movement is the same speed regardless of the frame rate.
const delta_time = game.state.timer.lap();
const delta_time = game.state().timer.lap();
// Move following entities closer to us.
var archetypes_iter = engine.entities.query(.{ .all = &.{
@ -165,5 +165,5 @@ fn tick(
const speed = 1.0;
player_pos.v[0] += direction.x() * speed * delta_time;
player_pos.v[1] += direction.y() * speed * delta_time;
try renderer.set(game.state.player, .location, player_pos);
try renderer.set(game.state().player, .location, player_pos);
}

24
examples/custom-renderer/Renderer.zig
View file

@ -42,7 +42,7 @@ fn init(
engine: *mach.Engine.Mod,
renderer: *Mod,
) !void {
const device = engine.state.device;
const device = engine.state().device;
const shader_module = device.createShaderModuleWGSL("shader.wgsl", @embedFile("shader.wgsl"));
// Fragment state
@ -94,29 +94,29 @@ fn init(
},
};
renderer.state = .{
renderer.init(.{
.pipeline = device.createRenderPipeline(&pipeline_descriptor),
.queue = device.getQueue(),
.bind_groups = bind_groups,
.uniform_buffer = uniform_buffer,
};
});
shader_module.release();
}
fn deinit(
renderer: *Mod,
) !void {
renderer.state.pipeline.release();
renderer.state.queue.release();
for (renderer.state.bind_groups) |bind_group| bind_group.release();
renderer.state.uniform_buffer.release();
renderer.state().pipeline.release();
renderer.state().queue.release();
for (renderer.state().bind_groups) |bind_group| bind_group.release();
renderer.state().uniform_buffer.release();
}
fn tick(
engine: *mach.Engine.Mod,
renderer: *Mod,
) !void {
const device = engine.state.device;
const device = engine.state().device;
// Begin our render pass
const back_buffer_view = core.swap_chain.getCurrentTextureView().?;
@ -148,14 +148,14 @@ fn tick(
.offset = location.v,
.scale = scale,
};
encoder.writeBuffer(renderer.state.uniform_buffer, uniform_offset * num_entities, &[_]UniformBufferObject{ubo});
encoder.writeBuffer(renderer.state().uniform_buffer, uniform_offset * num_entities, &[_]UniformBufferObject{ubo});
num_entities += 1;
}
}
const pass = encoder.beginRenderPass(&render_pass_info);
for (renderer.state.bind_groups[0..num_entities]) |bind_group| {
pass.setPipeline(renderer.state.pipeline);
for (renderer.state().bind_groups[0..num_entities]) |bind_group| {
pass.setPipeline(renderer.state().pipeline);
pass.setBindGroup(0, bind_group, &.{0});
pass.draw(3, 1, 0, 0);
}
@ -165,7 +165,7 @@ fn tick(
var command = encoder.finish(null);
encoder.release();
renderer.state.queue.submit(&[_]*gpu.CommandBuffer{command});
renderer.state().queue.submit(&[_]*gpu.CommandBuffer{command});
command.release();
core.swap_chain.present();
back_buffer_view.release();

54
examples/glyphs/Game.zig
View file

@ -60,7 +60,7 @@ fn init(
core.setTitle("gfx.Sprite example");
// Tell sprite_mod to use the texture
const texture = text_mod.state.texture;
const texture = text_mod.state().texture;
sprite_mod.send(.init_pipeline, .{Sprite.PipelineOptions{
.pipeline = @intFromEnum(Pipeline.text),
.texture = texture,
@ -71,7 +71,7 @@ fn init(
// type than the `.physics2d` module's `.location` component if you desire.
engine.dispatchNoError(); // TODO: no dispatch in user code
const r = text_mod.state.regions.get('?').?;
const r = text_mod.state().regions.get('?').?;
const player = try engine.newEntity();
try sprite_mod.set(player, .transform, Mat4x4.translate(vec3(-0.02, 0, 0)));
try sprite_mod.set(player, .size, vec2(@floatFromInt(r.width), @floatFromInt(r.height)));
@ -79,7 +79,7 @@ fn init(
try sprite_mod.set(player, .pipeline, @intFromEnum(Pipeline.text));
sprite_mod.send(.updated, .{@intFromEnum(Pipeline.text)});
game.state = .{
game.init(.{
.timer = try mach.Timer.start(),
.spawn_timer = try mach.Timer.start(),
.player = player,
@ -88,7 +88,7 @@ fn init(
.sprites = 0,
.rand = std.rand.DefaultPrng.init(1337),
.time = 0,
};
});
}
fn tick(
@ -99,8 +99,8 @@ fn tick(
) !void {
// TODO(engine): event polling should occur in mach.Engine module and get fired as ECS events.
var iter = core.pollEvents();
var direction = game.state.direction;
var spawning = game.state.spawning;
var direction = game.state().direction;
var spawning = game.state().spawning;
while (iter.next()) |event| {
switch (event) {
.key_press => |ev| {
@ -127,33 +127,33 @@ fn tick(
else => {},
}
}
game.state.direction = direction;
game.state.spawning = spawning;
game.state().direction = direction;
game.state().spawning = spawning;
var player_transform = sprite_mod.get(game.state.player, .transform).?;
var player_transform = sprite_mod.get(game.state().player, .transform).?;
var player_pos = player_transform.translation();
if (!spawning and game.state.spawn_timer.read() > 1.0 / 60.0) {
if (!spawning and game.state().spawn_timer.read() > 1.0 / 60.0) {
// Spawn new entities
_ = game.state.spawn_timer.lap();
_ = game.state().spawn_timer.lap();
for (0..50) |_| {
var new_pos = player_pos;
new_pos.v[0] += game.state.rand.random().floatNorm(f32) * 25;
new_pos.v[1] += game.state.rand.random().floatNorm(f32) * 25;
new_pos.v[0] += game.state().rand.random().floatNorm(f32) * 25;
new_pos.v[1] += game.state().rand.random().floatNorm(f32) * 25;
const rand_index = game.state.rand.random().intRangeAtMost(usize, 0, text_mod.state.regions.count() - 1);
const r = text_mod.state.regions.entries.get(rand_index).value;
const rand_index = game.state().rand.random().intRangeAtMost(usize, 0, text_mod.state().regions.count() - 1);
const r = text_mod.state().regions.entries.get(rand_index).value;
const new_entity = try engine.newEntity();
try sprite_mod.set(new_entity, .transform, Mat4x4.translate(new_pos).mul(&Mat4x4.scaleScalar(0.3)));
try sprite_mod.set(new_entity, .size, vec2(@floatFromInt(r.width), @floatFromInt(r.height)));
try sprite_mod.set(new_entity, .uv_transform, Mat3x3.translate(vec2(@floatFromInt(r.x), @floatFromInt(r.y))));
try sprite_mod.set(new_entity, .pipeline, @intFromEnum(Pipeline.text));
game.state.sprites += 1;
game.state().sprites += 1;
}
}
// Multiply by delta_time to ensure that movement is the same speed regardless of the frame rate.
const delta_time = game.state.timer.lap();
const delta_time = game.state().timer.lap();
// Animate entities
var archetypes_iter = engine.entities.query(.{ .all = &.{
@ -166,15 +166,15 @@ fn tick(
var location = old_transform.translation();
if (location.x() < -@as(f32, @floatFromInt(core.size().width)) / 1.5 or location.x() > @as(f32, @floatFromInt(core.size().width)) / 1.5 or location.y() < -@as(f32, @floatFromInt(core.size().height)) / 1.5 or location.y() > @as(f32, @floatFromInt(core.size().height)) / 1.5) {
try engine.entities.remove(id);
game.state.sprites -= 1;
game.state().sprites -= 1;
continue;
}
var transform = Mat4x4.ident;
transform = transform.mul(&Mat4x4.scale(Vec3.splat(1.0 + (0.2 * delta_time))));
transform = transform.mul(&Mat4x4.translate(location));
transform = transform.mul(&Mat4x4.rotateZ(2 * math.pi * game.state.time));
transform = transform.mul(&Mat4x4.scale(Vec3.splat(@max(math.cos(game.state.time / 2.0), 0.2))));
transform = transform.mul(&Mat4x4.rotateZ(2 * math.pi * game.state().time));
transform = transform.mul(&Mat4x4.scale(Vec3.splat(@max(math.cos(game.state().time / 2.0), 0.2))));
// TODO: .set() API is substantially slower due to internals
// try sprite_mod.set(id, .transform, transform);
@ -190,7 +190,7 @@ fn tick(
player_transform = Mat4x4.translate(player_pos).mul(
&Mat4x4.scale(Vec3.splat(1.0)),
);
try sprite_mod.set(game.state.player, .transform, player_transform);
try sprite_mod.set(game.state().player, .transform, player_transform);
sprite_mod.send(.updated, .{@intFromEnum(Pipeline.text)});
@ -204,11 +204,11 @@ fn tick(
engine.send(.present, .{}); // Present the frame
// Every second, update the window title with the FPS
if (game.state.fps_timer.read() >= 1.0) {
try core.printTitle("gfx.Sprite example [ FPS: {d} ] [ Sprites: {d} ]", .{ game.state.frame_count, game.state.sprites });
game.state.fps_timer.reset();
game.state.frame_count = 0;
if (game.state().fps_timer.read() >= 1.0) {
try core.printTitle("gfx.Sprite example [ FPS: {d} ] [ Sprites: {d} ]", .{ game.state().frame_count, game.state().sprites });
game.state().fps_timer.reset();
game.state().frame_count = 0;
}
game.state.frame_count += 1;
game.state.time += delta_time;
game.state().frame_count += 1;
game.state().time += delta_time;
}

53
examples/glyphs/Text.zig
View file

@ -19,28 +19,30 @@ pub const local_events = .{
const RegionMap = std.AutoArrayHashMapUnmanaged(u21, mach.gfx.Atlas.Region);
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
texture_atlas: mach.gfx.Atlas,
texture: *gpu.Texture,
ft: ft.Library,
face: ft.Face,
regions: RegionMap = .{},
allocator: std.mem.Allocator,
fn deinit(
engine: *mach.Engine.Mod,
text_mod: *Mod,
) !void {
text_mod.state.texture_atlas.deinit(engine.allocator);
text_mod.state.texture.release();
text_mod.state.face.deinit();
text_mod.state.ft.deinit();
text_mod.state.regions.deinit(engine.allocator);
fn deinit(text_mod: *Mod) !void {
const state = text_mod.state();
state.texture_atlas.deinit(text_mod.state().allocator);
state.texture.release();
state.face.deinit();
state.ft.deinit();
state.regions.deinit(state.allocator);
}
fn init(
engine: *mach.Engine.Mod,
text_mod: *Mod,
) !void {
const device = engine.state.device;
const device = engine.state().device;
const allocator = gpa.allocator();
// rgba32_pixels
const img_size = gpu.Extent3D{ .width = 1024, .height = 1024 };
@ -56,19 +58,22 @@ fn init(
},
});
var s = &text_mod.state;
s.texture = texture;
s.texture_atlas = try mach.gfx.Atlas.init(
engine.allocator,
const texture_atlas = try mach.gfx.Atlas.init(
allocator,
img_size.width,
.rgba,
);
// TODO: state fields' default values do not work
s.regions = .{};
const ft_lib = try ft.Library.init();
const face = try ft_lib.createFaceMemory(assets.roboto_medium_ttf, 0);
s.ft = try ft.Library.init();
s.face = try s.ft.createFaceMemory(assets.roboto_medium_ttf, 0);
text_mod.init(.{
.texture_atlas = texture_atlas,
.texture = texture,
.ft = ft_lib,
.face = face,
.allocator = allocator,
});
text_mod.send(.prepare, .{&[_]u21{ '?', '!', 'a', 'b', '#', '@', '%', '$', '&', '^', '*', '+', '=', '<', '>', '/', ':', ';', 'Q', '~' }});
}
@ -78,9 +83,9 @@ fn prepare(
text_mod: *Mod,
codepoints: []const u21,
) !void {
const device = engine.state.device;
const device = engine.state().device;
const queue = device.getQueue();
var s = &text_mod.state;
var s = text_mod.state();
for (codepoints) |codepoint| {
const font_size = 48 * 1;
@ -95,8 +100,8 @@ fn prepare(
// Add 1 pixel padding to texture to avoid bleeding over other textures
const margin = 1;
const glyph_data = try engine.allocator.alloc([4]u8, (glyph_width + (margin * 2)) * (glyph_height + (margin * 2)));
defer engine.allocator.free(glyph_data);
const glyph_data = try s.allocator.alloc([4]u8, (glyph_width + (margin * 2)) * (glyph_height + (margin * 2)));
defer s.allocator.free(glyph_data);
const glyph_buffer = glyph_bitmap.buffer().?;
for (glyph_data, 0..) |*data, i| {
const x = i % (glyph_width + (margin * 2));
@ -108,7 +113,7 @@ fn prepare(
data.* = [4]u8{ 0, 0, 0, alpha };
}
}
var glyph_atlas_region = try s.texture_atlas.reserve(engine.allocator, glyph_width + (margin * 2), glyph_height + (margin * 2));
var glyph_atlas_region = try s.texture_atlas.reserve(s.allocator, glyph_width + (margin * 2), glyph_height + (margin * 2));
s.texture_atlas.set(glyph_atlas_region, @as([*]const u8, @ptrCast(glyph_data.ptr))[0 .. glyph_data.len * 4]);
glyph_atlas_region.x += margin;
@ -116,7 +121,7 @@ fn prepare(
glyph_atlas_region.width -= margin * 2;
glyph_atlas_region.height -= margin * 2;
try s.regions.put(engine.allocator, codepoint, glyph_atlas_region);
try s.regions.put(s.allocator, codepoint, glyph_atlas_region);
_ = metrics;
}

63
examples/sprite/Game.zig
View file

@ -15,6 +15,8 @@ const Vec3 = math.Vec3;
const Mat3x3 = math.Mat3x3;
const Mat4x4 = math.Mat4x4;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
timer: mach.Timer,
player: mach.ecs.EntityID,
direction: Vec2 = vec2(0, 0),
@ -25,6 +27,7 @@ frame_count: usize,
sprites: usize,
rand: std.rand.DefaultPrng,
time: f32,
allocator: std.mem.Allocator,
const d0 = 0.000001;
@ -68,13 +71,14 @@ fn init(
try sprite_mod.set(player, .uv_transform, Mat3x3.translate(vec2(0, 0)));
try sprite_mod.set(player, .pipeline, @intFromEnum(Pipeline.default));
const allocator = gpa.allocator();
sprite_mod.send(.init_pipeline, .{Sprite.PipelineOptions{
.pipeline = @intFromEnum(Pipeline.default),
.texture = try loadTexture(engine),
.texture = try loadTexture(engine, allocator),
}});
sprite_mod.send(.updated, .{@intFromEnum(Pipeline.default)});
game.state = .{
game.init(.{
.timer = try mach.Timer.start(),
.spawn_timer = try mach.Timer.start(),
.player = player,
@ -83,7 +87,8 @@ fn init(
.sprites = 0,
.rand = std.rand.DefaultPrng.init(1337),
.time = 0,
};
.allocator = allocator,
});
}
fn tick(
@ -93,8 +98,8 @@ fn tick(
) !void {
// TODO(engine): event polling should occur in mach.Engine module and get fired as ECS events.
var iter = core.pollEvents();
var direction = game.state.direction;
var spawning = game.state.spawning;
var direction = game.state().direction;
var spawning = game.state().spawning;
while (iter.next()) |event| {
switch (event) {
.key_press => |ev| {
@ -121,30 +126,30 @@ fn tick(
else => {},
}
}
game.state.direction = direction;
game.state.spawning = spawning;
game.state().direction = direction;
game.state().spawning = spawning;
var player_transform = sprite_mod.get(game.state.player, .transform).?;
var player_transform = sprite_mod.get(game.state().player, .transform).?;
var player_pos = player_transform.translation();
if (spawning and game.state.spawn_timer.read() > 1.0 / 60.0) {
if (spawning and game.state().spawn_timer.read() > 1.0 / 60.0) {
// Spawn new entities
_ = game.state.spawn_timer.lap();
_ = game.state().spawn_timer.lap();
for (0..100) |_| {
var new_pos = player_pos;
new_pos.v[0] += game.state.rand.random().floatNorm(f32) * 25;
new_pos.v[1] += game.state.rand.random().floatNorm(f32) * 25;
new_pos.v[0] += game.state().rand.random().floatNorm(f32) * 25;
new_pos.v[1] += game.state().rand.random().floatNorm(f32) * 25;
const new_entity = try engine.newEntity();
try sprite_mod.set(new_entity, .transform, Mat4x4.translate(new_pos).mul(&Mat4x4.scale(Vec3.splat(0.3))));
try sprite_mod.set(new_entity, .size, vec2(32, 32));
try sprite_mod.set(new_entity, .uv_transform, Mat3x3.translate(vec2(0, 0)));
try sprite_mod.set(new_entity, .pipeline, @intFromEnum(Pipeline.default));
game.state.sprites += 1;
game.state().sprites += 1;
}
}
// Multiply by delta_time to ensure that movement is the same speed regardless of the frame rate.
const delta_time = game.state.timer.lap();
const delta_time = game.state().timer.lap();
// Rotate entities
var archetypes_iter = engine.entities.query(.{ .all = &.{
@ -161,8 +166,8 @@ fn tick(
// transform = transform.mul(&Mat4x4.translate(location));
var transform = Mat4x4.ident;
transform = transform.mul(&Mat4x4.translate(location));
transform = transform.mul(&Mat4x4.rotateZ(2 * math.pi * game.state.time));
transform = transform.mul(&Mat4x4.scaleScalar(@min(math.cos(game.state.time / 2.0), 0.5)));
transform = transform.mul(&Mat4x4.rotateZ(2 * math.pi * game.state().time));
transform = transform.mul(&Mat4x4.scaleScalar(@min(math.cos(game.state().time / 2.0), 0.5)));
// TODO: .set() API is substantially slower due to internals
// try sprite_mod.set(id, .transform, transform);
@ -175,7 +180,7 @@ fn tick(
const speed = 200.0;
player_pos.v[0] += direction.x() * speed * delta_time;
player_pos.v[1] += direction.y() * speed * delta_time;
try sprite_mod.set(game.state.player, .transform, Mat4x4.translate(player_pos));
try sprite_mod.set(game.state().player, .transform, Mat4x4.translate(player_pos));
sprite_mod.send(.updated, .{@intFromEnum(Pipeline.default)});
// Perform pre-render work
@ -188,24 +193,22 @@ fn tick(
engine.send(.present, .{}); // Present the frame
// Every second, update the window title with the FPS
if (game.state.fps_timer.read() >= 1.0) {
try core.printTitle("gfx.Sprite example [ FPS: {d} ] [ Sprites: {d} ]", .{ game.state.frame_count, game.state.sprites });
game.state.fps_timer.reset();
game.state.frame_count = 0;
if (game.state().fps_timer.read() >= 1.0) {
try core.printTitle("gfx.Sprite example [ FPS: {d} ] [ Sprites: {d} ]", .{ game.state().frame_count, game.state().sprites });
game.state().fps_timer.reset();
game.state().frame_count = 0;
}
game.state.frame_count += 1;
game.state.time += delta_time;
game.state().frame_count += 1;
game.state().time += delta_time;
}
// TODO: move this helper into gfx module
fn loadTexture(
engine: *mach.Engine.Mod,
) !*gpu.Texture {
const device = engine.state.device;
fn loadTexture(engine: *mach.Engine.Mod, allocator: std.mem.Allocator) !*gpu.Texture {
const device = engine.state().device;
const queue = device.getQueue();
// Load the image from memory
var img = try zigimg.Image.fromMemory(engine.allocator, assets.sprites_sheet_png);
var img = try zigimg.Image.fromMemory(allocator, assets.sprites_sheet_png);
defer img.deinit();
const img_size = gpu.Extent3D{ .width = @as(u32, @intCast(img.width)), .height = @as(u32, @intCast(img.height)) };
@ -226,8 +229,8 @@ fn loadTexture(
switch (img.pixels) {
.rgba32 => |pixels| queue.writeTexture(&.{ .texture = texture }, &data_layout, &img_size, pixels),
.rgb24 => |pixels| {
const data = try rgb24ToRgba32(engine.allocator, pixels);
defer data.deinit(engine.allocator);
const data = try rgb24ToRgba32(allocator, pixels);
defer data.deinit(allocator);
queue.writeTexture(&.{ .texture = texture }, &data_layout, &img_size, data.rgba32);
},
else => @panic("unsupported image color format"),

55
examples/text/Game.zig
View file

@ -17,6 +17,8 @@ const Vec3 = math.Vec3;
const Mat3x3 = math.Mat3x3;
const Mat4x4 = math.Mat4x4;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
timer: mach.Timer,
player: mach.ecs.EntityID,
direction: Vec2 = vec2(0, 0),
@ -28,6 +30,7 @@ texts: usize,
rand: std.rand.DefaultPrng,
time: f32,
style1: mach.ecs.EntityID,
allocator: std.mem.Allocator,
const d0 = 0.000001;
@ -101,7 +104,8 @@ fn init(
// TODO: better storage mechanism for this
// TODO: this is a leak
const styles = try engine.allocator.alloc(mach.ecs.EntityID, 3);
const allocator = gpa.allocator();
const styles = try allocator.alloc(mach.ecs.EntityID, 3);
styles[0] = style1;
styles[1] = style2;
styles[2] = style3;
@ -113,7 +117,7 @@ fn init(
}});
engine.dispatchNoError(); // TODO: no dispatch in user code
game.state = .{
game.init(.{
.timer = try mach.Timer.start(),
.spawn_timer = try mach.Timer.start(),
.player = player,
@ -123,7 +127,8 @@ fn init(
.rand = std.rand.DefaultPrng.init(1337),
.time = 0,
.style1 = style1,
};
.allocator = allocator,
});
}
fn deinit(engine: *mach.Engine.Mod) !void {
@ -137,8 +142,8 @@ fn tick(
) !void {
// TODO(engine): event polling should occur in mach.Engine module and get fired as ECS events.
var iter = core.pollEvents();
var direction = game.state.direction;
var spawning = game.state.spawning;
var direction = game.state().direction;
var spawning = game.state().spawning;
while (iter.next()) |event| {
switch (event) {
.key_press => |ev| {
@ -165,18 +170,18 @@ fn tick(
else => {},
}
}
game.state.direction = direction;
game.state.spawning = spawning;
game.state().direction = direction;
game.state().spawning = spawning;
var player_transform = text_mod.get(game.state.player, .transform).?;
var player_transform = text_mod.get(game.state().player, .transform).?;
var player_pos = player_transform.translation().divScalar(upscale);
if (spawning and game.state.spawn_timer.read() > 1.0 / 60.0) {
if (spawning and game.state().spawn_timer.read() > 1.0 / 60.0) {
// Spawn new entities
_ = game.state.spawn_timer.lap();
_ = game.state().spawn_timer.lap();
for (0..1) |_| {
var new_pos = player_pos;
new_pos.v[0] += game.state.rand.random().floatNorm(f32) * 25;
new_pos.v[1] += game.state.rand.random().floatNorm(f32) * 25;
new_pos.v[0] += game.state().rand.random().floatNorm(f32) * 25;
new_pos.v[1] += game.state().rand.random().floatNorm(f32) * 25;
const new_entity = try engine.newEntity();
try text_mod.set(new_entity, .pipeline, @intFromEnum(Pipeline.default));
@ -184,17 +189,17 @@ fn tick(
// TODO: better storage mechanism for this
// TODO: this is a leak
const styles = try engine.allocator.alloc(mach.ecs.EntityID, 1);
styles[0] = game.state.style1;
const styles = try game.state().allocator.alloc(mach.ecs.EntityID, 1);
styles[0] = game.state().style1;
try text_mod.set(new_entity, .text, text2);
try text_mod.set(new_entity, .style, styles);
game.state.texts += 1;
game.state().texts += 1;
}
}
// Multiply by delta_time to ensure that movement is the same speed regardless of the frame rate.
const delta_time = game.state.timer.lap();
const delta_time = game.state().timer.lap();
// Rotate entities
var archetypes_iter = engine.entities.query(.{ .all = &.{
@ -211,8 +216,8 @@ fn tick(
// transform = transform.mul(&Mat4x4.translate(location));
var transform = Mat4x4.ident;
transform = transform.mul(&Mat4x4.translate(location));
transform = transform.mul(&Mat4x4.rotateZ(2 * math.pi * game.state.time));
transform = transform.mul(&Mat4x4.scaleScalar(@min(math.cos(game.state.time / 2.0), 0.5)));
transform = transform.mul(&Mat4x4.rotateZ(2 * math.pi * game.state().time));
transform = transform.mul(&Mat4x4.scaleScalar(@min(math.cos(game.state().time / 2.0), 0.5)));
// TODO: .set() API is substantially slower due to internals
// try text_mod.set(id, .transform, transform);
@ -225,7 +230,7 @@ fn tick(
const speed = 200.0 / upscale;
player_pos.v[0] += direction.x() * speed * delta_time;
player_pos.v[1] += direction.y() * speed * delta_time;
try text_mod.set(game.state.player, .transform, Mat4x4.scaleScalar(upscale).mul(&Mat4x4.translate(player_pos)));
try text_mod.set(game.state().player, .transform, Mat4x4.scaleScalar(upscale).mul(&Mat4x4.translate(player_pos)));
text_mod.send(.updated, .{@intFromEnum(Pipeline.default)});
// Perform pre-render work
@ -238,11 +243,11 @@ fn tick(
engine.send(.present, .{}); // Present the frame
// Every second, update the window title with the FPS
if (game.state.fps_timer.read() >= 1.0) {
try core.printTitle("gfx.Text example [ FPS: {d} ] [ Texts: {d} ]", .{ game.state.frame_count, game.state.texts });
game.state.fps_timer.reset();
game.state.frame_count = 0;
if (game.state().fps_timer.read() >= 1.0) {
try core.printTitle("gfx.Text example [ FPS: {d} ] [ Texts: {d} ]", .{ game.state().frame_count, game.state().texts });
game.state().fps_timer.reset();
game.state().frame_count = 0;
}
game.state.frame_count += 1;
game.state.time += delta_time;
game.state().frame_count += 1;
game.state().time += delta_time;
}

10
src/ecs/main.zig
View file

@ -83,17 +83,11 @@ test "example" {
try world.init(allocator);
defer world.deinit(allocator);
// TODO: better module initialization location
world.mod.physics.entities = &world.entities;
world.mod.physics.allocator = world.entities.allocator;
world.mod.renderer.entities = &world.entities;
world.mod.renderer.allocator = world.entities.allocator;
// Initialize module state.
var physics = &world.mod.physics;
var renderer = &world.mod.renderer;
physics.state = .{ .pointer = 123 };
_ = physics.state.pointer; // == 123
physics.init(.{ .pointer = 123 });
_ = physics.state().pointer; // == 123
const player1 = try physics.newEntity();
const player2 = try physics.newEntity();

40
src/engine.zig
View file

@ -39,20 +39,23 @@ pub const Engine = struct {
fn init(engine: *Mod) !void {
core.allocator = allocator;
try core.init(.{});
const state = &engine.state;
state.device = core.device;
state.queue = core.device.getQueue();
state.should_exit = false;
state.encoder = state.device.createCommandEncoder(&gpu.CommandEncoder.Descriptor{
.label = "engine.state.encoder",
engine.init(.{
.device = core.device,
.queue = core.device.getQueue(),
.should_exit = false,
.pass = undefined,
.encoder = core.device.createCommandEncoder(&gpu.CommandEncoder.Descriptor{
.label = "engine.state.encoder",
}),
});
engine.sendGlobal(.init, .{});
}
fn deinit(engine: *Mod) void {
const state = engine.state();
// TODO: this triggers a device loss error, which we should handle correctly
// engine.state.device.release();
engine.state.queue.release();
// state.device.release();
state.queue.release();
engine.sendGlobal(.deinit, .{});
core.deinit();
}
@ -60,7 +63,8 @@ pub const Engine = struct {
// Engine module's exit handler
fn exit(engine: *Mod) void {
engine.sendGlobal(.exit, .{});
engine.state.should_exit = true;
const state = engine.state();
state.should_exit = true;
}
fn beginPass(engine: *Mod, clear_color: gpu.Color) void {
@ -78,21 +82,23 @@ pub const Engine = struct {
.color_attachments = &.{color_attachment},
});
engine.state.pass = engine.state.encoder.beginRenderPass(&pass_info);
const state = engine.state();
state.pass = state.encoder.beginRenderPass(&pass_info);
}
fn endPass(engine: *Mod) void {
const state = engine.state();
// End this pass
engine.state.pass.end();
engine.state.pass.release();
state.pass.end();
state.pass.release();
var command = engine.state.encoder.finish(null);
var command = state.encoder.finish(null);
defer command.release();
engine.state.encoder.release();
engine.state.queue.submit(&[_]*gpu.CommandBuffer{command});
state.encoder.release();
state.queue.submit(&[_]*gpu.CommandBuffer{command});
// Prepare for next pass
engine.state.encoder = engine.state.device.createCommandEncoder(&gpu.CommandEncoder.Descriptor{
state.encoder = state.device.createCommandEncoder(&gpu.CommandEncoder.Descriptor{
.label = "engine.state.encoder",
});
}
@ -125,6 +131,6 @@ pub const App = struct {
app.modules.mod.engine.sendGlobal(.tick, .{});
try app.modules.dispatch(); // dispatch .tick
try app.modules.dispatch(); // dispatch any events produced by .tick
return app.modules.mod.engine.state.should_exit;
return app.modules.mod.engine.state().should_exit;
}
};

40
src/gfx/Sprite.zig
View file

@ -12,8 +12,11 @@ const Vec3 = math.Vec3;
const Mat3x3 = math.Mat3x3;
const Mat4x4 = math.Mat4x4;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
/// Internal state
pipelines: std.AutoArrayHashMapUnmanaged(u32, Pipeline),
pipelines: std.AutoArrayHashMapUnmanaged(u32, Pipeline) = .{},
allocator: std.mem.Allocator,
pub const name = .mach_gfx_sprite;
pub const Mod = mach.Mod(@This());
@ -137,18 +140,15 @@ pub const PipelineOptions = struct {
pipeline_layout: ?*gpu.PipelineLayout = null,
};
fn deinit(sprite_mod: *Mod) !void {
for (sprite_mod.state.pipelines.entries.items(.value)) |*pipeline| pipeline.deinit();
sprite_mod.state.pipelines.deinit(sprite_mod.allocator);
fn init(sprite_mod: *Mod) void {
sprite_mod.init(.{
.allocator = gpa.allocator(),
});
}
fn init(
sprite_mod: *Mod,
) !void {
sprite_mod.state = .{
// TODO: struct default value initializers don't work
.pipelines = .{},
};
fn deinit(sprite_mod: *Mod) !void {
for (sprite_mod.state().pipelines.entries.items(.value)) |*pipeline| pipeline.deinit();
sprite_mod.state().pipelines.deinit(sprite_mod.state().allocator);
}
fn initPipeline(
@ -156,9 +156,9 @@ fn initPipeline(
sprite_mod: *Mod,
opt: PipelineOptions,
) !void {
const device = engine.state.device;
const device = engine.state().device;
const pipeline = try sprite_mod.state.pipelines.getOrPut(engine.allocator, opt.pipeline);
const pipeline = try sprite_mod.state().pipelines.getOrPut(sprite_mod.state().allocator, opt.pipeline);
if (pipeline.found_existing) {
pipeline.value_ptr.*.deinit();
}
@ -296,8 +296,8 @@ fn updated(
sprite_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = sprite_mod.state.pipelines.getPtr(pipeline_id).?;
const device = engine.state.device;
const pipeline = sprite_mod.state().pipelines.getPtr(pipeline_id).?;
const device = engine.state().device;
// TODO: make sure these entities only belong to the given pipeline
// we need a better tagging mechanism
@ -337,7 +337,7 @@ fn updated(
var command = encoder.finish(null);
defer command.release();
engine.state.queue.submit(&[_]*gpu.CommandBuffer{command});
engine.state().queue.submit(&[_]*gpu.CommandBuffer{command});
}
fn preRender(
@ -345,7 +345,7 @@ fn preRender(
sprite_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = sprite_mod.state.pipelines.get(pipeline_id).?;
const pipeline = sprite_mod.state().pipelines.get(pipeline_id).?;
// Update uniform buffer
const proj = Mat4x4.projection2D(.{
@ -365,7 +365,7 @@ fn preRender(
),
};
engine.state.encoder.writeBuffer(pipeline.uniforms, 0, &[_]Uniforms{uniforms});
engine.state().encoder.writeBuffer(pipeline.uniforms, 0, &[_]Uniforms{uniforms});
}
fn render(
@ -373,10 +373,10 @@ fn render(
sprite_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = sprite_mod.state.pipelines.get(pipeline_id).?;
const pipeline = sprite_mod.state().pipelines.get(pipeline_id).?;
// Draw the sprite batch
const pass = engine.state.pass;
const pass = engine.state().pass;
const total_vertices = pipeline.num_sprites * 6;
pass.setPipeline(pipeline.render);
// TODO: remove dynamic offsets?

56
src/gfx/Text.zig
View file

@ -15,8 +15,11 @@ const vec4 = math.vec4;
const Mat3x3 = math.Mat3x3;
const Mat4x4 = math.Mat4x4;
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
/// Internal state
pipelines: std.AutoArrayHashMapUnmanaged(u32, Pipeline),
pipelines: std.AutoArrayHashMapUnmanaged(u32, Pipeline) = .{},
allocator: std.mem.Allocator,
pub const name = .mach_gfx_text;
pub const Mod = mach.Mod(@This());
@ -198,17 +201,14 @@ pub const PipelineOptions = struct {
};
fn deinit(text_mod: *Mod) !void {
for (text_mod.state.pipelines.entries.items(.value)) |*pipeline| pipeline.deinit(text_mod.allocator);
text_mod.state.pipelines.deinit(text_mod.allocator);
for (text_mod.state().pipelines.entries.items(.value)) |*pipeline| pipeline.deinit(text_mod.state().allocator);
text_mod.state().pipelines.deinit(text_mod.state().allocator);
}
fn init(
text_mod: *Mod,
) !void {
text_mod.state = .{
// TODO: struct default value initializers don't work
.pipelines = .{},
};
fn init(text_mod: *Mod) void {
text_mod.init(.{
.allocator = gpa.allocator(),
});
}
fn initPipeline(
@ -216,11 +216,11 @@ fn initPipeline(
text_mod: *Mod,
opt: PipelineOptions,
) !void {
const device = engine.state.device;
const device = engine.state().device;
const pipeline = try text_mod.state.pipelines.getOrPut(engine.allocator, opt.pipeline);
const pipeline = try text_mod.state().pipelines.getOrPut(text_mod.state().allocator, opt.pipeline);
if (pipeline.found_existing) {
pipeline.value_ptr.*.deinit(engine.allocator);
pipeline.value_ptr.*.deinit(text_mod.state().allocator);
}
// Prepare texture for the font atlas.
@ -235,7 +235,7 @@ fn initPipeline(
},
});
const texture_atlas = try gfx.Atlas.init(
engine.allocator,
text_mod.state().allocator,
img_size.width,
.rgba,
);
@ -376,8 +376,8 @@ fn updated(
text_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = text_mod.state.pipelines.getPtr(pipeline_id).?;
const device = engine.state.device;
const pipeline = text_mod.state().pipelines.getPtr(pipeline_id).?;
const device = engine.state().device;
// TODO: make sure these entities only belong to the given pipeline
// we need a better tagging mechanism
@ -425,7 +425,7 @@ fn updated(
_ = font_name; // TODO: actually use font name
const font_bytes = @import("font-assets").fira_sans_regular_ttf;
var font = try gfx.Font.initBytes(font_bytes);
defer font.deinit(engine.allocator);
defer font.deinit(text_mod.state().allocator);
const font_size = engine.entities.getComponent(style, .mach_gfx_text, .font_size).?;
const font_weight = engine.entities.getComponent(style, .mach_gfx_text, .font_weight);
@ -450,16 +450,16 @@ fn updated(
const codepoint = segment[glyph.cluster];
// TODO: use flags(?) to detect newline, or at least something more reliable?
if (codepoint != '\n') {
const region = try pipeline.regions.getOrPut(engine.allocator, .{
const region = try pipeline.regions.getOrPut(text_mod.state().allocator, .{
.index = glyph.glyph_index,
.size = @bitCast(font_size),
});
if (!region.found_existing) {
const rendered_glyph = try font.render(engine.allocator, glyph.glyph_index, .{
const rendered_glyph = try font.render(text_mod.state().allocator, glyph.glyph_index, .{
.font_size_px = run.font_size_px,
});
if (rendered_glyph.bitmap) |bitmap| {
var glyph_atlas_region = try pipeline.texture_atlas.reserve(engine.allocator, rendered_glyph.width, rendered_glyph.height);
var glyph_atlas_region = try pipeline.texture_atlas.reserve(text_mod.state().allocator, rendered_glyph.width, rendered_glyph.height);
pipeline.texture_atlas.set(glyph_atlas_region, @as([*]const u8, @ptrCast(bitmap.ptr))[0 .. bitmap.len * 4]);
texture_update = true;
@ -484,7 +484,7 @@ fn updated(
const r = region.value_ptr.*;
const size = vec2(@floatFromInt(r.width), @floatFromInt(r.height));
try glyphs.append(engine.allocator, .{
try glyphs.append(text_mod.state().allocator, .{
.pos = vec2(
origin_x + glyph.offset.x(),
origin_y - (size.y() - glyph.offset.y()),
@ -509,7 +509,7 @@ fn updated(
// TODO: could writeBuffer check for zero?
if (glyphs.items.len > 0) encoder.writeBuffer(pipeline.glyphs, 0, glyphs.items);
defer glyphs.deinit(engine.allocator);
defer glyphs.deinit(text_mod.state().allocator);
if (texture_update) {
// rgba32_pixels
// TODO: use proper texture dimensions here
@ -518,7 +518,7 @@ fn updated(
.bytes_per_row = @as(u32, @intCast(img_size.width * 4)),
.rows_per_image = @as(u32, @intCast(img_size.height)),
};
engine.state.queue.writeTexture(
engine.state().queue.writeTexture(
&.{ .texture = pipeline.texture },
&data_layout,
&img_size,
@ -529,7 +529,7 @@ fn updated(
var command = encoder.finish(null);
defer command.release();
engine.state.queue.submit(&[_]*gpu.CommandBuffer{command});
engine.state().queue.submit(&[_]*gpu.CommandBuffer{command});
}
fn preRender(
@ -537,7 +537,7 @@ fn preRender(
text_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = text_mod.state.pipelines.get(pipeline_id).?;
const pipeline = text_mod.state().pipelines.get(pipeline_id).?;
// Update uniform buffer
const proj = Mat4x4.projection2D(.{
@ -557,7 +557,7 @@ fn preRender(
),
};
engine.state.encoder.writeBuffer(pipeline.uniforms, 0, &[_]Uniforms{uniforms});
engine.state().encoder.writeBuffer(pipeline.uniforms, 0, &[_]Uniforms{uniforms});
}
fn render(
@ -565,10 +565,10 @@ fn render(
text_mod: *Mod,
pipeline_id: u32,
) !void {
const pipeline = text_mod.state.pipelines.get(pipeline_id).?;
const pipeline = text_mod.state().pipelines.get(pipeline_id).?;
// Draw the text batch
const pass = engine.state.pass;
const pass = engine.state().pass;
const total_vertices = pipeline.num_glyphs * 6;
pass.setPipeline(pipeline.render);
// TODO: remove dynamic offsets?

76
src/module.zig
View file

@ -4,6 +4,7 @@ const testing = @import("testing.zig");
const Entities = @import("ecs/entities.zig").Entities;
const EntityID = @import("ecs/entities.zig").EntityID;
const is_debug = @import("ecs/comptime.zig").is_debug;
// TODO: make sendToModule the default name for sending events? and sendGlobal always secondary? Or vice-versa?
@ -71,6 +72,16 @@ pub fn Modules(comptime modules: anytype) type {
errdefer m.args_queue.deinit(allocator);
errdefer m.events.deinit();
try m.events.ensureTotalCapacity(1024);
// Default initialize m.mod
inline for (@typeInfo(@TypeOf(m.mod)).Struct.fields) |field| {
const Mod2 = @TypeOf(@field(m.mod, field.name));
@field(m.mod, field.name) = Mod2{
.__is_initialized = false,
.__state = undefined,
.entities = &m.entities,
};
}
}
pub fn deinit(m: *@This(), allocator: std.mem.Allocator) void {
@ -99,6 +110,7 @@ pub fn Modules(comptime modules: anytype) type {
}
}
// TODO: docs
fn moduleToGlobalEvent(
comptime M: type,
comptime EventEnumM: anytype,
@ -106,9 +118,7 @@ pub fn Modules(comptime modules: anytype) type {
comptime event_name: EventEnumM(M),
) EventEnum(modules) {
for (@typeInfo(EventEnum(modules)).Enum.fields) |gfield| {
if (std.mem.eql(u8, @tagName(event_name), gfield.name)) {
return @enumFromInt(gfield.value);
}
if (std.mem.eql(u8, @tagName(event_name), gfield.name)) return @enumFromInt(gfield.value);
}
unreachable;
}
@ -118,12 +128,14 @@ pub fn Modules(comptime modules: anytype) type {
m: *@This(),
// TODO: is a variant of this function where event_name is not comptime known, but asserted to be a valid enum, useful?
comptime module_name: ModuleName(modules),
comptime event_name: GlobalEventEnumM(@TypeOf(@field(m.mod, @tagName(module_name)).state)),
args: GlobalArgsM(@TypeOf(@field(m.mod, @tagName(module_name)).state), event_name),
// TODO: cleanup comptime
comptime event_name: GlobalEventEnumM(@TypeOf(@field(m.mod, @tagName(module_name)).__state)),
args: GlobalArgsM(@TypeOf(@field(m.mod, @tagName(module_name)).__state), event_name),
) void {
// TODO: comptime safety/debugging
const event_name_g: GlobalEvent = comptime moduleToGlobalEvent(
@TypeOf(@field(m.mod, @tagName(module_name)).state),
// TODO: cleanup comptime
@TypeOf(@field(m.mod, @tagName(module_name)).__state),
GlobalEventEnumM,
GlobalEventEnum,
event_name,
@ -136,12 +148,14 @@ pub fn Modules(comptime modules: anytype) type {
m: *@This(),
// TODO: is a variant of this function where module_name/event_name is not comptime known, but asserted to be a valid enum, useful?
comptime module_name: ModuleName(modules),
comptime event_name: LocalEventEnumM(@TypeOf(@field(m.mod, @tagName(module_name)).state)),
args: LocalArgsM(@TypeOf(@field(m.mod, @tagName(module_name)).state), event_name),
// TODO: cleanup comptime
comptime event_name: LocalEventEnumM(@TypeOf(@field(m.mod, @tagName(module_name)).__state)),
args: LocalArgsM(@TypeOf(@field(m.mod, @tagName(module_name)).__state), event_name),
) void {
// TODO: comptime safety/debugging
const event_name_g: LocalEvent = comptime moduleToGlobalEvent(
@TypeOf(@field(m.mod, @tagName(module_name)).state),
// TODO: cleanup comptime
@TypeOf(@field(m.mod, @tagName(module_name)).__state),
LocalEventEnumM,
LocalEventEnum,
event_name,
@ -197,10 +211,6 @@ pub fn Modules(comptime modules: anytype) type {
inline for (@typeInfo(ModsByName(modules)).Struct.fields) |injectable_field| {
if (*injectable_field.type == field.type) {
@field(injectable, field.name) = &@field(m.mod, injectable_field.name);
// TODO: better module initialization location
@field(injectable, field.name).entities = &m.entities;
@field(injectable, field.name).allocator = m.entities.allocator;
continue :outer;
}
}
@ -344,26 +354,52 @@ pub fn ModsByName(comptime modules: anytype) type {
// Mod() -> Modules()
//
pub fn ModSet(comptime modules: anytype) type {
const NSComponents = ComponentTypesByName(modules);
return struct {
pub fn Mod(comptime M: anytype) type {
const module_tag = M.name;
const components = ComponentTypesM(M){};
return struct {
state: M,
entities: *Entities(NSComponents{}),
// TODO: eliminate this global allocator and/or rethink allocation strategies for modules
allocator: std.mem.Allocator,
entities: *Entities(ComponentTypesByName(modules){}),
/// Private/internal fields
__is_initialized: bool,
__state: M,
pub const IsInjectedArgument = void;
/// Initializes the module's state
pub inline fn init(m: *@This(), s: M) void {
m.__state = s;
m.__is_initialized = true;
}
/// Returns a mutable pointer to the module's state (literally the struct type of the module.)
///
/// A panic will occur if m.init(M{}) was not called previously.
pub inline fn state(m: *@This()) *M {
if (is_debug) if (!m.__is_initialized) @panic("mach: module ." ++ @tagName(M.name) ++ " state is not initialized, ensure foo_mod.init(.{}) is called!");
return &m.__state;
}
/// Returns a read-only version of the module's state. If an event handler is
/// read-only (i.e. only ever reads state/components/entities), then its events can
/// be skipped during e.g. record-and-replay of events from disk.
///
/// Only use this if the module state being serialized and deserialized after the
/// event handler runs would accurately reproduce the state of the event handler
/// being run.
pub inline fn stateReadOnly(m: *@This()) *const M {
if (is_debug) if (!m.__is_initialized) @panic("mach: module ." ++ @tagName(M.name) ++ " state is not initialized, ensure mod.init(.{}) is called!");
return &m.__state;
}
/// Returns a new entity.
pub fn newEntity(m: *@This()) !EntityID {
pub inline fn newEntity(m: *@This()) !EntityID {
return m.entities.new();
}
/// Removes an entity.
pub fn removeEntity(m: *@This(), entity: EntityID) !void {
pub inline fn removeEntity(m: *@This(), entity: EntityID) !void {
try m.entities.removeEntity(entity);
}