104 lines
2.9 KiB
Zig
104 lines
2.9 KiB
Zig
const std = @import("std");
|
|
const mach = @import("mach");
|
|
const gpu = @import("gpu");
|
|
|
|
const App = @This();
|
|
|
|
pipeline: gpu.RenderPipeline,
|
|
queue: gpu.Queue,
|
|
|
|
pub fn init(app: *App, core: *mach.Core) !void {
|
|
const vs_module = core.device.createShaderModule(&.{
|
|
.label = "my vertex shader",
|
|
.code = .{ .wgsl = @embedFile("vert.wgsl") },
|
|
});
|
|
|
|
const fs_module = core.device.createShaderModule(&.{
|
|
.label = "my fragment shader",
|
|
.code = .{ .wgsl = @embedFile("frag.wgsl") },
|
|
});
|
|
|
|
// Fragment state
|
|
const blend = gpu.BlendState{
|
|
.color = .{
|
|
.operation = .add,
|
|
.src_factor = .one,
|
|
.dst_factor = .zero,
|
|
},
|
|
.alpha = .{
|
|
.operation = .add,
|
|
.src_factor = .one,
|
|
.dst_factor = .zero,
|
|
},
|
|
};
|
|
const color_target = gpu.ColorTargetState{
|
|
.format = core.swap_chain_format,
|
|
.blend = &blend,
|
|
.write_mask = gpu.ColorWriteMask.all,
|
|
};
|
|
const fragment = gpu.FragmentState{
|
|
.module = fs_module,
|
|
.entry_point = "main",
|
|
.targets = &.{color_target},
|
|
.constants = null,
|
|
};
|
|
const pipeline_descriptor = gpu.RenderPipeline.Descriptor{
|
|
.fragment = &fragment,
|
|
.layout = null,
|
|
.depth_stencil = null,
|
|
.vertex = .{
|
|
.module = vs_module,
|
|
.entry_point = "main",
|
|
.buffers = null,
|
|
},
|
|
.multisample = .{
|
|
.count = 1,
|
|
.mask = 0xFFFFFFFF,
|
|
.alpha_to_coverage_enabled = false,
|
|
},
|
|
.primitive = .{
|
|
.front_face = .ccw,
|
|
.cull_mode = .none,
|
|
.topology = .triangle_list,
|
|
.strip_index_format = .none,
|
|
},
|
|
};
|
|
|
|
app.pipeline = core.device.createRenderPipeline(&pipeline_descriptor);
|
|
app.queue = core.device.getQueue();
|
|
|
|
vs_module.release();
|
|
fs_module.release();
|
|
}
|
|
|
|
pub fn deinit(_: *App, _: *mach.Core) void {}
|
|
|
|
pub fn update(app: *App, core: *mach.Core) !void {
|
|
const back_buffer_view = core.swap_chain.?.getCurrentTextureView();
|
|
const color_attachment = gpu.RenderPassColorAttachment{
|
|
.view = back_buffer_view,
|
|
.resolve_target = null,
|
|
.clear_value = std.mem.zeroes(gpu.Color),
|
|
.load_op = .clear,
|
|
.store_op = .store,
|
|
};
|
|
|
|
const encoder = core.device.createCommandEncoder(null);
|
|
const render_pass_info = gpu.RenderPassEncoder.Descriptor{
|
|
.color_attachments = &.{color_attachment},
|
|
.depth_stencil_attachment = null,
|
|
};
|
|
const pass = encoder.beginRenderPass(&render_pass_info);
|
|
pass.setPipeline(app.pipeline);
|
|
pass.draw(3, 1, 0, 0);
|
|
pass.end();
|
|
pass.release();
|
|
|
|
var command = encoder.finish(null);
|
|
encoder.release();
|
|
|
|
app.queue.submit(&.{command});
|
|
command.release();
|
|
core.swap_chain.?.present();
|
|
back_buffer_view.release();
|
|
}
|