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</code></pre></div></div><p>Press the button below and you will see the code running!</p><divid="wasm-example"><!----><button>Try Tutorial1_window!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial1-window/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div></div><p>Press the button below and you will see the code running!</p><divid="wasm-example"><!----><button>Try Tutorial1_window!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial1-window/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>I'm glossing over <code>State</code>s fields, but they'll make more sense as I explain the code behind these methods.</p><h2id="state-new"><ahref="#state-new"class="header-anchor">#</a> State::new()</h2><p>The code for this is pretty straightforward, but let's break it down a bit.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">impl</span><spanclass="token class-name">State</span><spanclass="token punctuation">{</span>
@ -108,6 +119,7 @@ is to create <code>Adapter</code>s and <code>Surface</code>s.</p> <p>The <code>a
Make sure that the width and height of the `SurfaceTexture` are not 0, as that can cause your app to crash.
</div><p><code>present_mode</code> uses <code>wgpu::PresentMode</code> enum which determines how to sync the surface with the display. The option we picked, <code>PresentMode::Fifo</code>, will cap the display rate at the display's framerate. This is essentially VSync. This mode is guaranteed to be supported on all platforms. There are other options and you can see all of them <ahref="https://docs.rs/wgpu/latest/wgpu/enum.PresentMode.html"target="_blank"rel="noopener noreferrer">in the docs<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a></p><divclass="note"><p>If you want to let your users pick what <code>PresentMode</code> they use, you can use <ahref="https://docs.rs/wgpu/latest/wgpu/struct.Surface.html#method.get_supported_modes"target="_blank"rel="noopener noreferrer">Surface::get_supported_modes()<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a> to get a list of all the <code>PresentMode</code>s the surface supports:</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">let</span> modes <spanclass="token operator">=</span> surface<spanclass="token punctuation">.</span><spanclass="token function">get_supported_modes</span><spanclass="token punctuation">(</span><spanclass="token operator">&</span>adapter<spanclass="token punctuation">)</span><spanclass="token punctuation">;</span>
</code></pre></div><p>Regardless, <code>PresentMode::Fifo</code> will always be supported, and <code>PresentMode::AutoVsync</code> and <code>PresentMode::AutoNoVsync</code> have fallback support and therefore will work on all platforms.</p></div><p>Now that we've configured our surface properly we can add these new fields at the end of the method.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">Self</span><spanclass="token punctuation">{</span>
window<spanclass="token punctuation">,</span>
surface<spanclass="token punctuation">,</span>
device<spanclass="token punctuation">,</span>
queue<spanclass="token punctuation">,</span>
@ -120,7 +132,7 @@ Make sure that the width and height of the `SurfaceTexture` are not 0, as that c
</code></pre></div><p>Since our <code>State::new()</code> method is async we need to change <code>run()</code> to be async as well so that we can await it.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">pub</span><spanclass="token keyword">async</span><spanclass="token keyword">fn</span><spanclass="token function-definition function">run</span><spanclass="token punctuation">(</span><spanclass="token punctuation">)</span><spanclass="token punctuation">{</span>
@ -161,7 +173,7 @@ Make sure that the width and height of the `SurfaceTexture` are not 0, as that c
</code></pre></div><p>There's nothing different here from the initial <code>surface</code> configuration, so I won't get into it.</p><p>We call this method in <code>run()</code> in the event loop for the following events.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">match</span> event <spanclass="token punctuation">{</span>
</code></pre></div><p>The <code>RenderPassColorAttachment</code> has the <code>view</code> field which informs <code>wgpu</code> what texture to save the colors to. In this case we specify the <code>view</code> that we created using <code>surface.get_current_texture()</code>. This means that any colors we draw to this attachment will get drawn to the screen.</p><p>The <code>resolve_target</code> is the texture that will receive the resolved output. This will be the same as <code>view</code> unless multisampling is enabled. We don't need to specify this, so we leave it as <code>None</code>.</p><p>The <code>ops</code> field takes a <code>wpgu::Operations</code> object. This tells wgpu what to do with the colors on the screen (specified by <code>view</code>). The <code>load</code> field tells wgpu how to handle colors stored from the previous frame. Currently, we are clearing the screen with a bluish color. The <code>store</code> field tells wgpu whether we want to store the rendered results to the <code>Texture</code> behind our <code>TextureView</code> (in this case it's the <code>SurfaceTexture</code>). We use <code>true</code> as we do want to store our render results.</p><divclass="note"><p>It's not uncommon to not clear the screen if the screen is going to be completely covered up with objects. If your scene doesn't cover the entire screen however you can end up with something like this.</p><p><imgsrc="/learn-wgpu/assets/img/no-clear.753f913f.png"alt="./no-clear.png"></p></div><h2id="validation-errors"><ahref="#validation-errors"class="header-anchor">#</a> Validation Errors?</h2><p>If wgpu is using Vulkan on your machine, you may run into validation errors if you are running an older version of the Vulkan SDK. You should be using at least version <code>1.2.182</code> as older versions can give out some false positives. If errors persist, you may have encountered a bug in wgpu. You can post an issue at <ahref="https://github.com/gfx-rs/wgpu"target="_blank"rel="noopener noreferrer">https://github.com/gfx-rs/wgpu<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a></p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Modify the <code>input()</code> method to capture mouse events, and update the clear color using that. <em>Hint: you'll probably need to use <code>WindowEvent::CursorMoved</code></em>.</p><divid="wasm-example"><!----><button>Try Tutorial2_surface!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial2-surface/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>The <code>RenderPassColorAttachment</code> has the <code>view</code> field which informs <code>wgpu</code> what texture to save the colors to. In this case we specify the <code>view</code> that we created using <code>surface.get_current_texture()</code>. This means that any colors we draw to this attachment will get drawn to the screen.</p><p>The <code>resolve_target</code> is the texture that will receive the resolved output. This will be the same as <code>view</code> unless multisampling is enabled. We don't need to specify this, so we leave it as <code>None</code>.</p><p>The <code>ops</code> field takes a <code>wpgu::Operations</code> object. This tells wgpu what to do with the colors on the screen (specified by <code>view</code>). The <code>load</code> field tells wgpu how to handle colors stored from the previous frame. Currently, we are clearing the screen with a bluish color. The <code>store</code> field tells wgpu whether we want to store the rendered results to the <code>Texture</code> behind our <code>TextureView</code> (in this case it's the <code>SurfaceTexture</code>). We use <code>true</code> as we do want to store our render results.</p><divclass="note"><p>It's not uncommon to not clear the screen if the screen is going to be completely covered up with objects. If your scene doesn't cover the entire screen however you can end up with something like this.</p><p><imgsrc="/learn-wgpu/assets/img/no-clear.753f913f.png"alt="./no-clear.png"></p></div><h2id="validation-errors"><ahref="#validation-errors"class="header-anchor">#</a> Validation Errors?</h2><p>If wgpu is using Vulkan on your machine, you may run into validation errors if you are running an older version of the Vulkan SDK. You should be using at least version <code>1.2.182</code> as older versions can give out some false positives. If errors persist, you may have encountered a bug in wgpu. You can post an issue at <ahref="https://github.com/gfx-rs/wgpu"target="_blank"rel="noopener noreferrer">https://github.com/gfx-rs/wgpu<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a></p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Modify the <code>input()</code> method to capture mouse events, and update the clear color using that. <em>Hint: you'll probably need to use <code>WindowEvent::CursorMoved</code></em>.</p><divid="wasm-example"><!----><button>Try Tutorial2_surface!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial2-surface/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>Phew!</p><p>With these changes in place, the code should be working the same as it was before, but we now have a much easier way to create textures.</p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Create another texture and swap it out when you press the space key.</p><divid="wasm-example"><!----><button>Try Tutorial5_textures!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial5-textures/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>Phew!</p><p>With these changes in place, the code should be working the same as it was before, but we now have a much easier way to create textures.</p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Create another texture and swap it out when you press the space key.</p><divid="wasm-example"><!----><button>Try Tutorial5_textures!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial5-textures/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That's all we need to do. If you run the code now you should see a pentagon with our tree texture that you can rotate around and zoom into with the wasd/arrow keys.</p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Have our model rotate on its own independently of the camera. <em>Hint: you'll need another matrix for this.</em></p><divid="wasm-example"><!----><button>Try Tutorial6_uniforms!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial6-uniforms/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That's all we need to do. If you run the code now you should see a pentagon with our tree texture that you can rotate around and zoom into with the wasd/arrow keys.</p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Have our model rotate on its own independently of the camera. <em>Hint: you'll need another matrix for this.</em></p><divid="wasm-example"><!----><button>Try Tutorial6_uniforms!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial6-uniforms/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>We'll create the instances in <code>new()</code>. We'll use some constants to simplify things. We'll display our instances in 10 rows of 10, and they'll be spaced evenly apart.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">const</span><spanclass="token constant">NUM_INSTANCES_PER_ROW</span><spanclass="token punctuation">:</span><spanclass="token keyword">u32</span><spanclass="token operator">=</span><spanclass="token number">10</span><spanclass="token punctuation">;</span>
</code></pre></div><p>Now we can create the actual instances.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">impl</span><spanclass="token class-name">State</span><spanclass="token punctuation">{</span>
</code></pre></div><p>With all that done, we should have a forest of trees!</p><p><imgsrc="/learn-wgpu/assets/img/forest.5c5cf3ad.png"alt="./forest.png"></p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Modify the position and/or rotation of the instances every frame.</p><divid="wasm-example"><!----><button>Try Tutorial7_instancing!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial7-instancing/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>With all that done, we should have a forest of trees!</p><p><imgsrc="/learn-wgpu/assets/img/forest.5c5cf3ad.png"alt="./forest.png"></p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Modify the position and/or rotation of the instances every frame.</p><divid="wasm-example"><!----><button>Try Tutorial7_instancing!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial7-instancing/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>And that's all we have to do! No shader code needed! If you run the application, the depth issues will be fixed.</p><p><imgsrc="/learn-wgpu/assets/img/forest_fixed.a77f70f6.png"alt="forest_fixed.png"></p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Since the depth buffer is a texture, we can sample it in the shader. Because it's a depth texture, we'll have to use the <code>sampler_comparison</code> uniform type and the <code>textureSampleCompare</code> function instead of <code>sampler</code>, and <code>sampler2D</code> respectively. Create a bind group for the depth texture (or reuse an existing one), and render it to the screen.</p><divid="wasm-example"><!----><button>Try Tutorial8_depth!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial8-depth/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>And that's all we have to do! No shader code needed! If you run the application, the depth issues will be fixed.</p><p><imgsrc="/learn-wgpu/assets/img/forest_fixed.a77f70f6.png"alt="forest_fixed.png"></p><h2id="challenge"><ahref="#challenge"class="header-anchor">#</a> Challenge</h2><p>Since the depth buffer is a texture, we can sample it in the shader. Because it's a depth texture, we'll have to use the <code>sampler_comparison</code> uniform type and the <code>textureSampleCompare</code> function instead of <code>sampler</code>, and <code>sampler2D</code> respectively. Create a bind group for the depth texture (or reuse an existing one), and render it to the screen.</p><divid="wasm-example"><!----><button>Try Tutorial8_depth!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/beginner/tutorial8-depth/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
@ -640,7 +640,7 @@ let specular_color = specular_strength * light.color;
let half_dir = normalize(view_dir + light_dir);
let specular_strength = pow(max(dot(in.world_normal, half_dir), 0.0), 32.0);
</code></pre></div><p>It's hard to tell the difference, but here are the results.</p><p><imgsrc="/learn-wgpu/assets/img/half_dir.bbcc23b8.png"alt="./half_dir.png"></p><divid="wasm-example"><!----><button>Try Tutorial10_lighting!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/intermediate/tutorial10-lighting/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>It's hard to tell the difference, but here are the results.</p><p><imgsrc="/learn-wgpu/assets/img/half_dir.bbcc23b8.png"alt="./half_dir.png"></p><divid="wasm-example"><!----><button>Try Tutorial10_lighting!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/intermediate/tutorial10-lighting/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That gives us something like this.</p><p><imgsrc="/learn-wgpu/assets/img/debug_material.b374492b.png"alt=""></p><p>You can find the textures I use in the Github Repository.</p><divid="wasm-example"><!----><button>Try Tutorial11_normals!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/intermediate/tutorial11-normals/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That gives us something like this.</p><p><imgsrc="/learn-wgpu/assets/img/debug_material.b374492b.png"alt=""></p><p>You can find the textures I use in the Github Repository.</p><divid="wasm-example"><!----><button>Try Tutorial11_normals!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/intermediate/tutorial11-normals/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>You'll need to import <code>winit::dpi::PhysicalPosition</code> if you haven't already.</p><p>We need to update <code>new()</code> as well.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">impl</span><spanclass="token class-name">State</span><spanclass="token punctuation">{</span>
</code></pre></div><p>We still need to calculate <code>dt</code>. Let's do that in the <code>main</code> function.</p><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">fn</span><spanclass="token function-definition function">main</span><spanclass="token punctuation">(</span><spanclass="token punctuation">)</span><spanclass="token punctuation">{</span>
</code></pre></div><p>With that, we should be able to move our camera wherever we want.</p><p><imgsrc="/learn-wgpu/assets/img/screenshot.4f5740bc.png"alt="./screenshot.png"></p><divid="wasm-example"><!----><button>Try Tutorial12_camera!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/intermediate/tutorial12-camera/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>With that, we should be able to move our camera wherever we want.</p><p><imgsrc="/learn-wgpu/assets/img/screenshot.4f5740bc.png"alt="./screenshot.png"></p><divid="wasm-example"><!----><button>Try Tutorial12_camera!</button></div><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/intermediate/tutorial12-camera/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>If you want learn more about workgroups <ahref="https://www.w3.org/TR/WGSL/#compute-shader-workgroups"target="_blank"rel="noopener noreferrer">check out the docs<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>.</p></div><p>TODO:</p><ul><li>Note changes to <code>create_render_pipeline</code></li><li>Mention <code>swizzle</code> feature for cgmath</li><li>Compare workgroups and workgroups sizes to nested for loops
<ul><li>Maybe make a diagram in blender?</li></ul></li><li>Change to camera movement speed</li></ul></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><!----></main></div></div><divclass="global-ui"><!----></div></div>
<ul><li>Maybe make a diagram in blender?</li></ul></li><li>Change to camera movement speed</li></ul></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><!----></main></div></div><divclass="global-ui"><!----></div></div>
@ -61,7 +61,7 @@ I needed to do was add a padding field:</p> <div class="language-rust extra-clas
breaks glob imports (aka. <code>use anyhow::*</code>), I had to switch qualified
imports and uses (ie. <code>anyhow::Result</code>). This was mostly an issue on my
build scripts for some of the showcase examples.</p><p>The main tutorial examples weren't affected, and the changes are minor, so
if you're curious feel free to look at the repo.</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
if you're curious feel free to look at the repo.</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
←
<ahref="/learn-wgpu/news/0.13/"class="prev">
Update to 0.13!
@ -70,6 +70,6 @@ if you're curious feel free to look at the repo.</p></div> <footer class="page-e
</code></pre></div><p>You can explore the reasoning for the change to <code>map_async</code> in <ahref="https://github.com/gfx-rs/wgpu/pull/2698"target="_blank"rel="noopener noreferrer">this PR<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>.</p><p>Another thing to note is that presentation modes need to match what the surface supports. You can get a list of supported modes from <ahref="https://docs.rs/wgpu/latest/wgpu/struct.Surface.html#method.get_supported_modes"target="_blank"rel="noopener noreferrer">Surface::get_surface_modes()<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>.</p><p>As always, let me know if I missed anything in the migration process. You can open an issue/submit a PR on the <ahref="https://github.com/sotrh/learn-wgpu"target="_blank"rel="noopener noreferrer">Learn Wgpu repo<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>!</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>You can explore the reasoning for the change to <code>map_async</code> in <ahref="https://github.com/gfx-rs/wgpu/pull/2698"target="_blank"rel="noopener noreferrer">this PR<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>.</p><p>Another thing to note is that presentation modes need to match what the surface supports. You can get a list of supported modes from <ahref="https://docs.rs/wgpu/latest/wgpu/struct.Surface.html#method.get_supported_modes"target="_blank"rel="noopener noreferrer">Surface::get_surface_modes()<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>.</p><p>As always, let me know if I missed anything in the migration process. You can open an issue/submit a PR on the <ahref="https://github.com/sotrh/learn-wgpu"target="_blank"rel="noopener noreferrer">Learn Wgpu repo<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a>!</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
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<ahref="/learn-wgpu/news/0.14/"class="prev">
Update to 0.14!
@ -67,6 +67,6 @@ output_buffer<span class="token punctuation">.</span><span class="token function
</code></pre></div><h2id="winit-updated"><ahref="#winit-updated"class="header-anchor">#</a> Winit updated</h2><p>Winit has been updated to version "0.27" so if you build on linux you may need to update some of your packages:</p><divclass="language-bash extra-class"><preclass="language-bash"><code><spanclass="token function">sudo</span><spanclass="token function">apt</span><spanclass="token function">install</span> libfontconfig libfontconfig1-dev
</code></pre></div><olstart="2"><li>The <code>request_device</code> method now returns a <code>(Device, Queue)</code> tuple. This means that you can borrow the <code>Queue</code> mutably while using the <code>Device</code> immutably. Because of this change, submitting <code>CommandBuffer</code>s to the queue uses the <code>submit</code> method on the <code>Queue</code> directly.</li></ol><divclass="language-rust extra-class"><preclass="language-rust"><code><spanclass="token keyword">self</span><spanclass="token punctuation">.</span>queue<spanclass="token punctuation">.</span><spanclass="token function">submit</span><spanclass="token punctuation">(</span><spanclass="token operator">&</span><spanclass="token punctuation">[</span>
</code></pre></div><olstart="3"><li>The <code>create</code> method on <code>Surface</code> takes in any struct that implements the <code>HasRawWindow</code> trait, instead of a <code>RawWindowHandle</code>. This means that the <code>raw-window-handle = "0.3"</code> line in <code>Cargo.toml</code> is no longer needed.</li></ol><p>I don't know if this is a change from 0.4, but you use <code>wgpu = "0.4"</code> line in dependencies instead of the <code>[dependencies.wgpu]</code> as wgpu will determine the best back end for you.</p><h2id="new-recent-articles"><ahref="#new-recent-articles"class="header-anchor">#</a> New/Recent Articles</h2><div><ul><li><a></a></li><li><a></a></li><li><a></a></li><li><a></a></li><li><a></a></li></ul></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><olstart="3"><li>The <code>create</code> method on <code>Surface</code> takes in any struct that implements the <code>HasRawWindow</code> trait, instead of a <code>RawWindowHandle</code>. This means that the <code>raw-window-handle = "0.3"</code> line in <code>Cargo.toml</code> is no longer needed.</li></ol><p>I don't know if this is a change from 0.4, but you use <code>wgpu = "0.4"</code> line in dependencies instead of the <code>[dependencies.wgpu]</code> as wgpu will determine the best back end for you.</p><h2id="new-recent-articles"><ahref="#new-recent-articles"class="header-anchor">#</a> New/Recent Articles</h2><div><ul><li><a></a></li><li><a></a></li><li><a></a></li><li><a></a></li><li><a></a></li></ul></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><h2id="additional-resources"><ahref="#additional-resources"class="header-anchor">#</a> Additional resources</h2><p>If you're looking for more information check out the <ahref="https://gist.github.com/teoxoy/936891c16c2a3d1c3c5e7204ac6cd76c"target="_blank"rel="noopener noreferrer">write-up<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a> by @teoxoy.</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><h2id="additional-resources"><ahref="#additional-resources"class="header-anchor">#</a> Additional resources</h2><p>If you're looking for more information check out the <ahref="https://gist.github.com/teoxoy/936891c16c2a3d1c3c5e7204ac6cd76c"target="_blank"rel="noopener noreferrer">write-up<span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></a> by @teoxoy.</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>I ultimately decided against this method as it was more complicated, and I haven't had time to benchmark it to see if it's faster than the simple method.</p><h2id="results"><ahref="#results"class="header-anchor">#</a> Results</h2><p>The tangents and bitangents are now getting calculated correctly and on the GPU!</p><p><imgsrc="/learn-wgpu/assets/img/results.7918efc1.png"alt="./results.png"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/compute/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>I ultimately decided against this method as it was more complicated, and I haven't had time to benchmark it to see if it's faster than the simple method.</p><h2id="results"><ahref="#results"class="header-anchor">#</a> Results</h2><p>The tangents and bitangents are now getting calculated correctly and on the GPU!</p><p><imgsrc="/learn-wgpu/assets/img/results.7918efc1.png"alt="./results.png"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/compute/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That's the gist of it. We can improve things using a texture array, and sending the draw commands all at once, but this gets the idea across. With the shader I wrote we get the following GIF.</p><p><imgsrc="/learn-wgpu/assets/img/output.5ed23d6e.gif"alt="./output.gif"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/gifs/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That's the gist of it. We can improve things using a texture array, and sending the draw commands all at once, but this gets the idea across. With the shader I wrote we get the following GIF.</p><p><imgsrc="/learn-wgpu/assets/img/output.5ed23d6e.gif"alt="./output.gif"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/gifs/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>That's all there is to it. Here's a picture of the results!</p><p><imgsrc="/learn-wgpu/assets/img/screenshot.1f9dab62.png"alt="./screenshot.png"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/imgui-demo/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><!----></main></div></div><divclass="global-ui"><!----></div></div>
</code></pre></div><p>That's all there is to it. Here's a picture of the results!</p><p><imgsrc="/learn-wgpu/assets/img/screenshot.1f9dab62.png"alt="./screenshot.png"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/imgui-demo/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><!----></main></div></div><divclass="global-ui"><!----></div></div>
<divid="app"data-server-rendered="true"><divclass="theme-container"><headerclass="navbar"><divclass="inner"><divclass="sidebar-button"><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"role="img"viewBox="0 0 448 512"class="icon"><pathfill="currentColor"d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div><ahref="/learn-wgpu/"class="home-link router-link-active"><!----><spanclass="site-name">Learn Wgpu</span></a><divclass="links"><!----><divclass="search-box"><inputaria-label="Search"autocomplete="off"spellcheck="false"value=""><!----></div></div></div></header><divclass="sidebar-mask"></div><divclass="docs-layout"><asideclass="sidebar"><!----><ulclass="sidebar-links"><li><ahref="/learn-wgpu/"aria-current="page"class="sidebar-link">Introduction</a></li><li><sectionclass="sidebar-group depth-0"><pclass="sidebar-heading"><span>Beginner</span><!----></p><ulclass="sidebar-links sidebar-group-items"><li><ahref="/learn-wgpu/beginner/tutorial1-window/"class="sidebar-link">Dependencies and the window</a></li><li><ahref="/learn-wgpu/beginner/tutorial2-surface/"class="sidebar-link">The Surface</a></li><li><ahref="/learn-wgpu/beginner/tutorial3-pipeline/"class="sidebar-link">The Pipeline</a></li><li><ahref="/learn-wgpu/beginner/tutorial4-buffer/"class="sidebar-link">Buffers and Indices</a></li><li><ahref="/learn-wgpu/beginner/tutorial5-textures/"class="sidebar-link">Textures and bind groups</a></li><li><ahref="/learn-wgpu/beginner/tutorial6-uniforms/"class="sidebar-link">Uniform buffers and a 3d camera</a></li><li><ahref="/learn-wgpu/beginner/tutorial7-instancing/"class="sidebar-link">Instancing</a></li><li><ahref="/learn-wgpu/beginner/tutorial8-depth/"class="sidebar-link">The Depth Buffer</a></li><li><ahref="/learn-wgpu/beginner/tutorial9-models/"class="sidebar-link">Model Loading</a></li></ul></section></li><li><sectionclass="sidebar-group depth-0"><pclass="sidebar-heading"><span>Intermediate</span><!----></p><ulclass="sidebar-links sidebar-group-items"><li><ahref="/learn-wgpu/intermediate/tutorial10-lighting/"class="sidebar-link">Working with Lights</a></li><li><ahref="/learn-wgpu/intermediate/tutorial11-normals/"class="sidebar-link">Normal Mapping</a></li><li><ahref="/learn-wgpu/intermediate/tutorial12-camera/"class="sidebar-link">A Better Camera</a></li></ul></section></li><li><sectionclass="sidebar-group collapsable depth-0"><pclass="sidebar-heading open"><span>Showcase</span><spanclass="arrow down"></span></p><ulclass="sidebar-links sidebar-group-items"><li><ahref="/learn-wgpu/showcase/"aria-current="page"class="active sidebar-link">Foreword</a></li><li><ahref="/learn-wgpu/showcase/windowless/"class="sidebar-link">Wgpu without a window</a></li><li><ahref="/learn-wgpu/showcase/gifs/"class="sidebar-link">Creating gifs</a></li><li><ahref="/learn-wgpu/showcase/pong/"class="sidebar-link">Pong</a></li><li><ahref="/learn-wgpu/showcase/compute/"class="sidebar-link">Compute Example: Tangents and Bitangents</a></li><li><ahref="/learn-wgpu/showcase/alignment/"class="sidebar-link">Memory Layout in WGSL</a></li></ul></section></li><li><sectionclass="sidebar-group collapsable depth-0"><pclass="sidebar-heading"><span>News</span><spanclass="arrow right"></span></p><!----></section></li></ul></aside><mainclass="page"><divclass="theme-default-content content__default"><h1id="foreword"><ahref="#foreword"class="header-anchor">#</a> Foreword</h1><p>The articles in this section are not meant to be tutorials. They are showcases of the various things you can do with <code>wgpu</code>. I won't go over the specifics of creating <code>wgpu</code> resources, as those will be covered elsewhere. The code for these examples is still available however and will be accessible on Github.</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
<divid="app"data-server-rendered="true"><divclass="theme-container"><headerclass="navbar"><divclass="inner"><divclass="sidebar-button"><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"role="img"viewBox="0 0 448 512"class="icon"><pathfill="currentColor"d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div><ahref="/learn-wgpu/"class="home-link router-link-active"><!----><spanclass="site-name">Learn Wgpu</span></a><divclass="links"><!----><divclass="search-box"><inputaria-label="Search"autocomplete="off"spellcheck="false"value=""><!----></div></div></div></header><divclass="sidebar-mask"></div><divclass="docs-layout"><asideclass="sidebar"><!----><ulclass="sidebar-links"><li><ahref="/learn-wgpu/"aria-current="page"class="sidebar-link">Introduction</a></li><li><sectionclass="sidebar-group depth-0"><pclass="sidebar-heading"><span>Beginner</span><!----></p><ulclass="sidebar-links sidebar-group-items"><li><ahref="/learn-wgpu/beginner/tutorial1-window/"class="sidebar-link">Dependencies and the window</a></li><li><ahref="/learn-wgpu/beginner/tutorial2-surface/"class="sidebar-link">The Surface</a></li><li><ahref="/learn-wgpu/beginner/tutorial3-pipeline/"class="sidebar-link">The Pipeline</a></li><li><ahref="/learn-wgpu/beginner/tutorial4-buffer/"class="sidebar-link">Buffers and Indices</a></li><li><ahref="/learn-wgpu/beginner/tutorial5-textures/"class="sidebar-link">Textures and bind groups</a></li><li><ahref="/learn-wgpu/beginner/tutorial6-uniforms/"class="sidebar-link">Uniform buffers and a 3d camera</a></li><li><ahref="/learn-wgpu/beginner/tutorial7-instancing/"class="sidebar-link">Instancing</a></li><li><ahref="/learn-wgpu/beginner/tutorial8-depth/"class="sidebar-link">The Depth Buffer</a></li><li><ahref="/learn-wgpu/beginner/tutorial9-models/"class="sidebar-link">Model Loading</a></li></ul></section></li><li><sectionclass="sidebar-group depth-0"><pclass="sidebar-heading"><span>Intermediate</span><!----></p><ulclass="sidebar-links sidebar-group-items"><li><ahref="/learn-wgpu/intermediate/tutorial10-lighting/"class="sidebar-link">Working with Lights</a></li><li><ahref="/learn-wgpu/intermediate/tutorial11-normals/"class="sidebar-link">Normal Mapping</a></li><li><ahref="/learn-wgpu/intermediate/tutorial12-camera/"class="sidebar-link">A Better Camera</a></li></ul></section></li><li><sectionclass="sidebar-group collapsable depth-0"><pclass="sidebar-heading open"><span>Showcase</span><spanclass="arrow down"></span></p><ulclass="sidebar-links sidebar-group-items"><li><ahref="/learn-wgpu/showcase/"aria-current="page"class="active sidebar-link">Foreword</a></li><li><ahref="/learn-wgpu/showcase/windowless/"class="sidebar-link">Wgpu without a window</a></li><li><ahref="/learn-wgpu/showcase/gifs/"class="sidebar-link">Creating gifs</a></li><li><ahref="/learn-wgpu/showcase/pong/"class="sidebar-link">Pong</a></li><li><ahref="/learn-wgpu/showcase/compute/"class="sidebar-link">Compute Example: Tangents and Bitangents</a></li><li><ahref="/learn-wgpu/showcase/alignment/"class="sidebar-link">Memory Layout in WGSL</a></li></ul></section></li><li><sectionclass="sidebar-group collapsable depth-0"><pclass="sidebar-heading"><span>News</span><spanclass="arrow right"></span></p><!----></section></li></ul></aside><mainclass="page"><divclass="theme-default-content content__default"><h1id="foreword"><ahref="#foreword"class="header-anchor">#</a> Foreword</h1><p>The articles in this section are not meant to be tutorials. They are showcases of the various things you can do with <code>wgpu</code>. I won't go over the specifics of creating <code>wgpu</code> resources, as those will be covered elsewhere. The code for these examples is still available however and will be accessible on Github.</p></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>Everything else works the same.</p><h2id="summary"><ahref="#summary"class="header-anchor">#</a> Summary</h2><p>A fun project to work on. It was overly architected, and kinda hard to make changes, but a good experience nonetheless.</p><p>Try the code down below! (Controls currently require a keyboard.)</p><divid="wasm-example"><!----><button>Try Pong!</button></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>Everything else works the same.</p><h2id="summary"><ahref="#summary"class="header-anchor">#</a> Summary</h2><p>A fun project to work on. It was overly architected, and kinda hard to make changes, but a good experience nonetheless.</p><p>Try the code down below! (Controls currently require a keyboard.)</p><divid="wasm-example"><!----><button>Try Pong!</button></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
←
<ahref="/learn-wgpu/showcase/gifs/"class="prev">
Creating gifs
@ -302,6 +302,6 @@ naga = { version = "0.9", features = ["glsl-in", "spv-o
</code></pre></div><p>We've parallelized loading the meshes, and making the vertex array for them. Probably a bit overkill, but <code>rayon</code> should prevent us from using too many threads.</p><divclass="note"><p>You'll notice that we didn't use <code>rayon</code> for calculating the tangent, and bitangent. I tried to get it to work, but I was having trouble finding a way to do it without multiple mutable references to <code>vertices</code>. I don't feel like introducing a <code>std::sync::Mutex</code>, so I'll leave it for now.</p><p>This is honestly a better job for a compute shader, as the model data is going to get loaded into a buffer anyway.</p></div><h2id="it-s-that-easy"><ahref="#it-s-that-easy"class="header-anchor">#</a> It's that easy!</h2><p>Most of the <code>wgpu</code> types are <code>Send + Sync</code>, so we can use them in threads without much trouble. It was so easy, that I feel like this tutorial is too short! I'll just leave off with a speed comparison between the previous model loading code and the current code.</p><divclass="language- extra-class"><preclass="language-text"><code>Elapsed (Original): 309.596382ms
Elapsed (Threaded): 199.645027ms
</code></pre></div><p>We're not loading that many resources, so the speedup is minimal. We'll be doing more stuff with threading, but this is a good introduction.</p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/threading/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><!----></main></div></div><divclass="global-ui"><!----></div></div>
</code></pre></div><p>We're not loading that many resources, so the speedup is minimal. We'll be doing more stuff with threading, but this is a good introduction.</p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/threading/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><!----></main></div></div><divclass="global-ui"><!----></div></div>
</code></pre></div><p>With all that you should have an image like this.</p><p><imgsrc="data:image/png;base64,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"alt="a brown triangle"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/windowless/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 7:43:55 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
</code></pre></div><p>With all that you should have an image like this.</p><p><imgsrc="data:image/png;base64,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"alt="a brown triangle"></p><divclass="auto-github-link"><ahref="https://github.com/sotrh/learn-wgpu/tree/master/code/showcase/windowless/"target="_blank"rel="noopener noreferrer">Check out the code!</a><span><svgxmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewBox="0 0 100 100"width="15"height="15"class="icon outbound"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="sr-only">(opens new window)</span></span></div></div><footerclass="page-edit"><!----><divclass="last-updated"><spanclass="prefix">Last Updated: </span><spanclass="time">1/14/2023, 8:32:51 PM</span></div></footer><divclass="page-nav"><pclass="inner"><spanclass="prev">
sotrh
1 year ago