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Core: add .present_frame event replacing swapbuffers call

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Note that on e.g. web platform, swapbuffers is not an explicit call.
We also need a signal that the frame has been submitted and finished,
and this is it.

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-04-21 23:53:09 -07:00 • committed by Stephen Gutekanst
parent 431e0dbbe1
commit 656b0202f2
9 changed files with 79 additions and 38 deletions
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4
examples/custom-renderer/Game.zig
View file

@ -47,10 +47,6 @@ fn init(
renderer: *Renderer.Mod,
game: *Mod,
) !void {
// The Mach .core is where we set window options, etc.
// TODO(important): replace this API with something better
mach.core.setTitle("Hello, ECS!");
// Create our player entity.
const player = try core.newEntity();

50
examples/custom-renderer/Renderer.zig
View file

@ -123,22 +123,29 @@ fn tick(
renderer: *Mod,
) !void {
const device = core.state().device;
_ = device; // autofix
// Begin our render pass
// Grab the back buffer of the swapchain
const back_buffer_view = mach.core.swap_chain.getCurrentTextureView().?;
const color_attachment = gpu.RenderPassColorAttachment{
defer back_buffer_view.release();
// Create a command encoder
const label = @tagName(name) ++ ".tick";
const encoder = core.state().device.createCommandEncoder(&.{ .label = label });
defer encoder.release();
// Begin render pass
const sky_blue_background = gpu.Color{ .r = 0.776, .g = 0.988, .b = 1, .a = 1 };
const color_attachments = [_]gpu.RenderPassColorAttachment{.{
.view = back_buffer_view,
.clear_value = std.mem.zeroes(gpu.Color),
.clear_value = sky_blue_background,
.load_op = .clear,
.store_op = .store,
};
const label = @tagName(name) ++ ".tick";
const encoder = device.createCommandEncoder(&.{ .label = label });
const render_pass_info = gpu.RenderPassDescriptor.init(.{
}};
const render_pass = encoder.beginRenderPass(&gpu.RenderPassDescriptor.init(.{
.label = label,
.color_attachments = &.{color_attachment},
});
.color_attachments = &color_attachments,
}));
// Update uniform buffer
var archetypes_iter = core.entities.query(.{ .all = &.{
@ -161,20 +168,21 @@ fn tick(
}
}
const pass = encoder.beginRenderPass(&render_pass_info);
// Draw
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);
render_pass.setPipeline(renderer.state().pipeline);
render_pass.setBindGroup(0, bind_group, &.{0});
render_pass.draw(3, 1, 0, 0);
}
pass.end();
pass.release();
// Finish render pass
render_pass.end();
// Submit our commands to the queue
var command = encoder.finish(&.{ .label = label });
encoder.release();
defer command.release();
core.state().queue.submit(&[_]*gpu.CommandBuffer{command});
renderer.state().queue.submit(&[_]*gpu.CommandBuffer{command});
command.release();
mach.core.swap_chain.present();
back_buffer_view.release();
// Present the frame
core.send(.present_frame, .{});
}