Add depth testing

main
copygirl 9 months ago
parent d2761382ec
commit f735d49fc2
  1. 35
      src/main.zig

@ -60,6 +60,8 @@ random: std.rand.Random,
app_timer: core.Timer,
title_timer: core.Timer,
depth_texture: *gpu.Texture,
depth_texture_view: *gpu.TextureView,
pipeline: *gpu.RenderPipeline,
scene_uniform_buffer: *gpu.Buffer,
scene_uniform_bind_group: *gpu.BindGroup,
@ -87,6 +89,16 @@ pub fn init(app: *App) !void {
app.app_timer = try core.Timer.start();
app.title_timer = try core.Timer.start();
// Create a depth texture. This is used to ensure that when things are
// rendered, an object behind another won't draw over one in front, simply
// because it was rendered at a later point in time.
app.depth_texture = core.device.createTexture(&.{
.usage = .{ .render_attachment = true },
.size = .{ .width = core.descriptor.width, .height = core.descriptor.height },
.format = .depth24_plus,
});
app.depth_texture_view = app.depth_texture.createView(null);
const shader_module = core.device.createShaderModuleWGSL("shader.wgsl", @embedFile("shader.wgsl"));
defer shader_module.release();
@ -105,16 +117,21 @@ pub fn init(app: *App) !void {
}),
},
}),
.fragment = &gpu.FragmentState.init(.{
.module = shader_module,
.entry_point = "frag_main",
.targets = &.{.{ .format = core.descriptor.format }},
}),
.primitive = .{
.topology = .triangle_list,
.front_face = .ccw,
.cull_mode = .back,
},
.depth_stencil = &.{
.format = .depth24_plus,
.depth_write_enabled = .true,
.depth_compare = .less,
},
.fragment = &gpu.FragmentState.init(.{
.module = shader_module,
.entry_point = "frag_main",
.targets = &.{.{ .format = core.descriptor.format }},
}),
});
// Set up scene related uniform buffers and bind groups.
@ -283,6 +300,8 @@ pub fn deinit(app: *App) void {
// in the order they were created in `init`.
defer core.deinit();
defer _ = app.gpa.deinit(); // TODO: Check for memory leaks?
defer app.depth_texture.release();
defer app.depth_texture_view.release();
defer app.pipeline.release();
defer app.scene_uniform_buffer.release();
defer app.scene_uniform_bind_group.release();
@ -340,6 +359,12 @@ pub fn update(app: *App) !bool {
.load_op = .clear,
.store_op = .store,
}},
.depth_stencil_attachment = &.{
.view = app.depth_texture_view,
.depth_load_op = .clear,
.depth_store_op = .store,
.depth_clear_value = 1.0,
},
});
// Create a `WGPUCommandEncoder` which provides an interface for recording GPU commands.

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