Daniel Hooper danielchasehooper

GPU Optimization for GameDev

Graphics Pipeline / GPU Architecture Overview

2011 - A trip through the Graphics Pipeline 2011
2013 - Performance Optimization Guidelines and the GPU Architecture behind them
2015 - Life of a triangle - NVIDIA's logical pipeline
2015 - Render Hell 2.0
2016 - How bad are small triangles on GPU and why?
2017 - GPU Performance for Game Artists
2019 - Understanding the anatomy of GPUs using Pokémon

Random Mach notes

`mach_thread_self` increments ref count

Each call to mach_thread_self adds another MACH_PORT_RIGHT_SEND refcount. For each call to mach_thread_self, you need to call mach_port_deallocate on the result.

(This does not apply to mach_task_self.)

MiniPerf

Example of how to capture CPU counters with ETW on Windows, perf on Linux or kperf on Apple.

Using ETW needs somewhat recently updated Windows 10 or 11. Not sure about exact version.

Currently tested on:

etw on Qualcomm Snapdragon X Elite, Windows 11, arm64
etw on AMD Zen 3, Windows 11 (with virtualization enabled in BIOS)

	typedef T = int;
	var segs: T**;
	var seg: T*;
	var segcap = 1;
	var segidx = 1;

	func grow() {
	seg = 0;
	asetcap(seg, segcap);
	apush(segs, seg);

	const std = @import("std");

	pub fn build(b: *std.Build) void {
	// Standard target options allows the person running `zig build` to choose
	// what target to build for. Here we do not override the defaults, which
	// means any target is allowed, and the default is native. Other options
	// for restricting supported target set are available.
	const target = b.standardTargetOptions(.{});

	// Standard optimization options allow the person running `zig build` to select

	#import <Cocoa/Cocoa.h>
	#import <MetalKit/MetalKit.h>


	//
	// Compile and run:
	//
	// clang -O2 -fobjc-arc metal-mouse-lag.m -framework AppKit -framework Metal -framework MetalKit
	// ./a.out
	//

	1) Clone and build WebKit

	git clone https://github.com/WebKit/WebKit.git WebKit
	cd WebKit
	Tools/Scripts/build-webkit -cmakeargs="-DENABLE_WEBGPU_BY_DEFAULT=1" --debug


	2) Run your app

	__XPC_METAL_CAPTURE_ENABLED=1 Tools/Scripts/run-minibrowser --debug --url http://localhost:5000/index.html#/loaders/gsplat

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