{gfx,examples}: fix refcounting bugs, improve sysgpu compatability

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

examples/core-custom-entrypoint/App.zig

@@ -96,6 +96,7 @@ fn tick(core: *mach.Core.Mod, game: *Mod) !void {
         .label = label,
         .color_attachments = &color_attachments,
     }));
+    defer render_pass.release();
 
     // Draw
     render_pass.setPipeline(game.state().pipeline);

examples/custom-renderer/App.zig

@@ -38,7 +38,8 @@ pub const name = .app;
 // Note that Mod.state() returns an instance of our module struct.
 pub const Mod = mach.Mod(@This());
 
-pub fn deinit(core: *mach.Core.Mod) void {
+pub fn deinit(core: *mach.Core.Mod, renderer: *Renderer.Mod) void {
+    renderer.send(.deinit, .{});
     core.send(.deinit, .{});
 }
 

examples/custom-renderer/Renderer.zig

@@ -14,7 +14,6 @@ const num_bind_groups = 1024 * 32;
 const uniform_offset = 256;
 
 pipeline: *gpu.RenderPipeline,
-queue: *gpu.Queue,
 bind_groups: [num_bind_groups]*gpu.BindGroup,
 uniform_buffer: *gpu.Buffer,
 
@@ -44,6 +43,7 @@ fn init(
 ) !void {
     const device = core.state().device;
     const shader_module = device.createShaderModuleWGSL("shader.wgsl", @embedFile("shader.wgsl"));
+    defer shader_module.release();
 
     // Fragment state
     const blend = gpu.BlendState{};
@@ -65,6 +65,7 @@ fn init(
         .size = @sizeOf(UniformBufferObject) * uniform_offset * num_bind_groups,
         .mapped_at_creation = .false,
     });
+
     const bind_group_layout_entry = gpu.BindGroupLayout.Entry.buffer(0, .{ .vertex = true }, .uniform, true, 0);
     const bind_group_layout = device.createBindGroupLayout(
         &gpu.BindGroupLayout.Descriptor.init(.{
@@ -72,6 +73,8 @@ fn init(
             .entries = &.{bind_group_layout_entry},
         }),
     );
+    defer bind_group_layout.release();
+
     var bind_groups: [num_bind_groups]*gpu.BindGroup = undefined;
     for (bind_groups, 0..) |_, i| {
         bind_groups[i] = device.createBindGroup(
@@ -93,7 +96,9 @@ fn init(
         .label = label,
         .bind_group_layouts = &bind_group_layouts,
     }));
-    const pipeline_descriptor = gpu.RenderPipeline.Descriptor{
+    defer pipeline_layout.release();
+
+    const pipeline = device.createRenderPipeline(&gpu.RenderPipeline.Descriptor{
         .label = label,
         .fragment = &fragment,
         .layout = pipeline_layout,
@@ -101,22 +106,19 @@ fn init(
             .module = shader_module,
             .entry_point = "vertex_main",
         },
-    };
+    });
 
     renderer.init(.{
-        .pipeline = device.createRenderPipeline(&pipeline_descriptor),
+        .pipeline = pipeline,
-        .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();
 }
@@ -168,6 +170,7 @@ fn renderFrame(
         .label = label,
         .color_attachments = &color_attachments,
     }));
+    defer render_pass.release();
 
     // Draw
     for (renderer.state().bind_groups[0..num_entities]) |bind_group| {

examples/glyphs/App.zig

@@ -222,8 +222,6 @@ fn tick(
         .load_op = .clear,
         .store_op = .store,
     }};
-    // TODO: can we eliminate this assignment
-    game.state().frame_encoder = core.state().device.createCommandEncoder(&.{ .label = label });
     game.state().frame_render_pass = game.state().frame_encoder.beginRenderPass(&gpu.RenderPassDescriptor.init(.{
         .label = label,
         .color_attachments = &color_attachments,
@@ -244,9 +242,10 @@ fn endFrame(game: *Mod, core: *mach.Core.Mod) !void {
     game.state().frame_render_pass.end();
     const label = @tagName(name) ++ ".endFrame";
     var command = game.state().frame_encoder.finish(&.{ .label = label });
-    game.state().frame_encoder.release();
     defer command.release();
     core.state().queue.submit(&[_]*gpu.CommandBuffer{command});
+    game.state().frame_encoder.release();
+    game.state().frame_render_pass.release();
 
     // Present the frame
     core.send(.present_frame, .{});

examples/glyphs/Glyphs.zig

@@ -76,8 +76,6 @@ fn init(
 }
 
 fn prepare(core: *mach.Core.Mod, glyphs: *Mod) !void {
-    const device = core.state().device;
-    const queue = device.getQueue();
     var s = glyphs.state();
 
     // Prepare which glyphs we will render
@@ -126,5 +124,5 @@ fn prepare(core: *mach.Core.Mod, glyphs: *Mod) !void {
         .bytes_per_row = @as(u32, @intCast(img_size.width * 4)),
         .rows_per_image = @as(u32, @intCast(img_size.height)),
     };
-    queue.writeTexture(&.{ .texture = s.texture }, &data_layout, &img_size, s.texture_atlas.data);
+    core.state().queue.writeTexture(&.{ .texture = s.texture }, &data_layout, &img_size, s.texture_atlas.data);
 }

examples/piano/App.zig

@@ -162,6 +162,7 @@ fn tick(
         .label = label,
         .color_attachments = &color_attachments,
     }));
+    defer render_pass.release();
 
     // Draw nothing
 

examples/sprite/App.zig

@@ -207,8 +207,6 @@ fn tick(
         .load_op = .clear,
         .store_op = .store,
     }};
-    // TODO: can we eliminate this assignment
-    game.state().frame_encoder = core.state().device.createCommandEncoder(&.{ .label = label });
     game.state().frame_render_pass = game.state().frame_encoder.beginRenderPass(&gpu.RenderPassDescriptor.init(.{
         .label = label,
         .color_attachments = &color_attachments,

examples/text/App.zig

@@ -251,7 +251,6 @@ fn tick(
         .load_op = .clear,
         .store_op = .store,
     }};
-    game.state().frame_encoder = core.state().device.createCommandEncoder(&.{ .label = label });
     game.state().frame_render_pass = game.state().frame_encoder.beginRenderPass(&gpu.RenderPassDescriptor.init(.{
         .label = label,
         .color_attachments = &color_attachments,

src/gfx/Sprite.zig

@@ -107,6 +107,7 @@ fn updatePipeline(
         encoder.writeBuffer(built.transforms, 0, gfx.SpritePipeline.cp_transforms[0..i]);
         encoder.writeBuffer(built.uv_transforms, 0, gfx.SpritePipeline.cp_uv_transforms[0..i]);
         encoder.writeBuffer(built.sizes, 0, gfx.SpritePipeline.cp_sizes[0..i]);
+
         var command = encoder.finish(&.{ .label = label });
         defer command.release();
         core.state().queue.submit(&[_]*gpu.CommandBuffer{command});

src/gfx/SpritePipeline.zig

@@ -60,7 +60,7 @@ pub const components = .{
 };
 
 pub const events = .{
-    .init = .{ .handler = fn () void },
+    .init = .{ .handler = init },
     .deinit = .{ .handler = deinit },
     .update = .{ .handler = update },
     .pre_render = .{ .handler = preRender },
@@ -119,6 +119,10 @@ pub const BuiltPipeline = struct {
     }
 };
 
+fn init(sprite_pipeline: *Mod) void {
+    sprite_pipeline.init(.{});
+}
+
 fn deinit(sprite_pipeline: *Mod) void {
     var archetypes_iter = sprite_pipeline.entities.query(.{ .all = &.{
         .{ .mach_gfx_sprite_pipeline = &.{
@@ -131,8 +135,6 @@ fn deinit(sprite_pipeline: *Mod) void {
 }
 
 fn update(core: *mach.Core.Mod, sprite_pipeline: *Mod) !void {
-    sprite_pipeline.init(.{});
-
     // Destroy all sprite render pipelines. We will rebuild them all.
     deinit(sprite_pipeline);
 

src/gfx/TextPipeline.zig

@@ -267,9 +267,21 @@ fn buildPipeline(
             .label = label,
             .layout = bind_group_layout,
             .entries = &.{
+                if (mach.use_sysgpu)
+                    gpu.BindGroup.Entry.buffer(0, uniforms, 0, @sizeOf(Uniforms), @sizeOf(Uniforms))
+                else
                     gpu.BindGroup.Entry.buffer(0, uniforms, 0, @sizeOf(Uniforms)),
+                if (mach.use_sysgpu)
+                    gpu.BindGroup.Entry.buffer(1, transforms, 0, @sizeOf(math.Mat4x4) * texts_buffer_cap, @sizeOf(math.Mat4x4))
+                else
                     gpu.BindGroup.Entry.buffer(1, transforms, 0, @sizeOf(math.Mat4x4) * texts_buffer_cap),
+                if (mach.use_sysgpu)
+                    gpu.BindGroup.Entry.buffer(2, colors, 0, @sizeOf(math.Vec4) * texts_buffer_cap, @sizeOf(math.Vec4))
+                else
                     gpu.BindGroup.Entry.buffer(2, colors, 0, @sizeOf(math.Vec4) * texts_buffer_cap),
+                if (mach.use_sysgpu)
+                    gpu.BindGroup.Entry.buffer(3, glyphs, 0, @sizeOf(Glyph) * texts_buffer_cap, @sizeOf(Glyph))
+                else
                     gpu.BindGroup.Entry.buffer(3, glyphs, 0, @sizeOf(Glyph) * texts_buffer_cap),
                 gpu.BindGroup.Entry.sampler(4, texture_sampler),
                 gpu.BindGroup.Entry.textureView(5, texture_view),