examples: port to new API
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iddev5
Stephen Gutekanst
parent
5c984d9795
commit
218a6a5c08
8 changed files with 438 additions and 473 deletions
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@ -6,23 +6,25 @@ const zm = @import("zmath");
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const Vertex = @import("cube_mesh.zig").Vertex;
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const vertices = @import("cube_mesh.zig").vertices;
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const App = mach.App(*FrameParams, .{});
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const UniformBufferObject = struct {
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mat: zm.Mat,
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};
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var timer: std.time.Timer = undefined;
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pub fn main() !void {
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pipeline: gpu.RenderPipeline,
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queue: gpu.Queue,
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vertex_buffer: gpu.Buffer,
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uniform_buffer: gpu.Buffer,
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bind_group1: gpu.BindGroup,
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bind_group2: gpu.BindGroup,
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const App = @This();
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pub fn init(app: *App, engine: *mach.Engine) !void {
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timer = try std.time.Timer.start();
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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var allocator = gpa.allocator();
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const ctx = try allocator.create(FrameParams);
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var app = try App.init(allocator, ctx, .{});
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app.window.setKeyCallback(struct {
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engine.core.internal.window.setKeyCallback(struct {
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fn callback(window: glfw.Window, key: glfw.Key, scancode: i32, action: glfw.Action, mods: glfw.Mods) void {
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_ = scancode;
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_ = mods;
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@ -34,9 +36,9 @@ pub fn main() !void {
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}
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}
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}.callback);
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try app.window.setSizeLimits(.{ .width = 20, .height = 20 }, .{ .width = null, .height = null });
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try engine.core.internal.window.setSizeLimits(.{ .width = 20, .height = 20 }, .{ .width = null, .height = null });
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const vs_module = app.device.createShaderModule(&.{
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const vs_module = engine.gpu_driver.device.createShaderModule(&.{
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.label = "my vertex shader",
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.code = .{ .wgsl = @embedFile("vert.wgsl") },
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});
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@ -52,7 +54,7 @@ pub fn main() !void {
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.attributes = &vertex_attributes,
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};
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const fs_module = app.device.createShaderModule(&.{
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const fs_module = engine.gpu_driver.device.createShaderModule(&.{
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.label = "my fragment shader",
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.code = .{ .wgsl = @embedFile("frag.wgsl") },
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});
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@ -70,7 +72,7 @@ pub fn main() !void {
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},
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};
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const color_target = gpu.ColorTargetState{
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.format = app.swap_chain_format,
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.format = engine.gpu_driver.swap_chain_format,
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.blend = &blend,
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.write_mask = gpu.ColorWriteMask.all,
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};
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@ -82,14 +84,14 @@ pub fn main() !void {
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};
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const bgle = gpu.BindGroupLayout.Entry.buffer(0, .{ .vertex = true }, .uniform, true, 0);
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const bgl = app.device.createBindGroupLayout(
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const bgl = engine.gpu_driver.device.createBindGroupLayout(
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&gpu.BindGroupLayout.Descriptor{
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.entries = &.{bgle},
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},
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);
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const bind_group_layouts = [_]gpu.BindGroupLayout{bgl};
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const pipeline_layout = app.device.createPipelineLayout(&.{
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const pipeline_layout = engine.gpu_driver.device.createPipelineLayout(&.{
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.bind_group_layouts = &bind_group_layouts,
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});
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@ -115,9 +117,9 @@ pub fn main() !void {
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},
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};
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const queue = app.device.getQueue();
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const queue = engine.gpu_driver.device.getQueue();
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const vertex_buffer = app.device.createBuffer(&.{
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const vertex_buffer = engine.gpu_driver.device.createBuffer(&.{
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.usage = .{ .vertex = true },
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.size = @sizeOf(Vertex) * vertices.len,
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.mapped_at_creation = true,
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@ -125,17 +127,16 @@ pub fn main() !void {
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var vertex_mapped = vertex_buffer.getMappedRange(Vertex, 0, vertices.len);
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std.mem.copy(Vertex, vertex_mapped, vertices[0..]);
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vertex_buffer.unmap();
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defer vertex_buffer.release();
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// uniformBindGroup offset must be 256-byte aligned
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const uniform_offset = 256;
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const uniform_buffer = app.device.createBuffer(&.{
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const uniform_buffer = engine.gpu_driver.device.createBuffer(&.{
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.usage = .{ .uniform = true, .copy_dst = true },
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.size = @sizeOf(UniformBufferObject) + uniform_offset,
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.mapped_at_creation = false,
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});
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defer uniform_buffer.release();
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const bind_group1 = app.device.createBindGroup(
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const bind_group1 = engine.gpu_driver.device.createBindGroup(
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&gpu.BindGroup.Descriptor{
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.layout = bgl,
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.entries = &.{
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@ -143,8 +144,8 @@ pub fn main() !void {
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},
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},
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);
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defer bind_group1.release();
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const bind_group2 = app.device.createBindGroup(
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const bind_group2 = engine.gpu_driver.device.createBindGroup(
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&gpu.BindGroup.Descriptor{
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.layout = bgl,
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.entries = &.{
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@ -152,36 +153,29 @@ pub fn main() !void {
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},
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},
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);
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defer bind_group2.release();
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ctx.* = FrameParams{
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.pipeline = app.device.createRenderPipeline(&pipeline_descriptor),
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.queue = queue,
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.vertex_buffer = vertex_buffer,
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.uniform_buffer = uniform_buffer,
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.bind_group1 = bind_group1,
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.bind_group2 = bind_group2,
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};
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app.pipeline = engine.gpu_driver.device.createRenderPipeline(&pipeline_descriptor);
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app.queue = queue;
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app.vertex_buffer = vertex_buffer;
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app.uniform_buffer = uniform_buffer;
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app.bind_group1 = bind_group1;
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app.bind_group2 = bind_group2;
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vs_module.release();
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fs_module.release();
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pipeline_layout.release();
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bgl.release();
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try app.run(.{ .frame = frame });
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}
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const FrameParams = struct {
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pipeline: gpu.RenderPipeline,
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queue: gpu.Queue,
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vertex_buffer: gpu.Buffer,
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uniform_buffer: gpu.Buffer,
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bind_group1: gpu.BindGroup,
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bind_group2: gpu.BindGroup,
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};
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pub fn deinit(app: *App, _: *mach.Engine) void {
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app.vertex_buffer.release();
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app.uniform_buffer.release();
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app.bind_group1.release();
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app.bind_group2.release();
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}
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fn frame(app: *App, params: *FrameParams) !void {
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const back_buffer_view = app.swap_chain.?.getCurrentTextureView();
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pub fn update(app: *App, engine: *mach.Engine) !bool {
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const back_buffer_view = engine.gpu_driver.swap_chain.?.getCurrentTextureView();
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const color_attachment = gpu.RenderPassColorAttachment{
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.view = back_buffer_view,
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.resolve_target = null,
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@ -190,7 +184,7 @@ fn frame(app: *App, params: *FrameParams) !void {
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.store_op = .store,
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};
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const encoder = app.device.createCommandEncoder(null);
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const encoder = engine.gpu_driver.device.createCommandEncoder(null);
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const render_pass_info = gpu.RenderPassEncoder.Descriptor{
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.color_attachments = &.{color_attachment},
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.depth_stencil_attachment = null,
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@ -209,7 +203,7 @@ fn frame(app: *App, params: *FrameParams) !void {
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);
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const proj = zm.perspectiveFovRh(
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(2.0 * std.math.pi / 5.0),
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@intToFloat(f32, app.current_desc.width) / @intToFloat(f32, app.current_desc.height),
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@intToFloat(f32, engine.gpu_driver.current_desc.width) / @intToFloat(f32, engine.gpu_driver.current_desc.height),
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1,
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100,
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);
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@ -222,19 +216,19 @@ fn frame(app: *App, params: *FrameParams) !void {
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.mat = zm.transpose(mvp2),
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};
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encoder.writeBuffer(params.uniform_buffer, 0, UniformBufferObject, &.{ubo1});
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encoder.writeBuffer(app.uniform_buffer, 0, UniformBufferObject, &.{ubo1});
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// bind_group2 offset
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encoder.writeBuffer(params.uniform_buffer, 256, UniformBufferObject, &.{ubo2});
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encoder.writeBuffer(app.uniform_buffer, 256, UniformBufferObject, &.{ubo2});
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}
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const pass = encoder.beginRenderPass(&render_pass_info);
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pass.setPipeline(params.pipeline);
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pass.setVertexBuffer(0, params.vertex_buffer, 0, @sizeOf(Vertex) * vertices.len);
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pass.setPipeline(app.pipeline);
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pass.setVertexBuffer(0, app.vertex_buffer, 0, @sizeOf(Vertex) * vertices.len);
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pass.setBindGroup(0, params.bind_group1, &.{0});
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pass.setBindGroup(0, app.bind_group1, &.{0});
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pass.draw(vertices.len, 1, 0, 0);
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pass.setBindGroup(0, params.bind_group2, &.{0});
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pass.setBindGroup(0, app.bind_group2, &.{0});
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pass.draw(vertices.len, 1, 0, 0);
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pass.end();
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@ -243,8 +237,10 @@ fn frame(app: *App, params: *FrameParams) !void {
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var command = encoder.finish(null);
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encoder.release();
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params.queue.submit(&.{command});
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app.queue.submit(&.{command});
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command.release();
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app.swap_chain.?.present();
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engine.gpu_driver.swap_chain.?.present();
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back_buffer_view.release();
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return true;
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}
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