<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source to the Rust file `src/vkprocessor.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>vkprocessor.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../sfml_rust/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">command_buffer</span>::{<span class="ident">AutoCommandBufferBuilder</span>, <span class="ident">DynamicState</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">device</span>::{<span class="ident">Device</span>, <span class="ident">DeviceExtensions</span>, <span class="ident">QueuesIter</span>, <span class="ident">Queue</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">instance</span>::{<span class="ident">Instance</span>, <span class="ident">PhysicalDevice</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">sync</span>::{<span class="ident">GpuFuture</span>, <span class="ident">FlushError</span>, <span class="ident">NowFuture</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">sync</span>::<span class="ident">now</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">sync</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">swapchain</span>::{<span class="ident">Swapchain</span>, <span class="ident">PresentMode</span>, <span class="ident">SurfaceTransform</span>, <span class="ident">Surface</span>, <span class="ident">SwapchainCreationError</span>, <span class="ident">AcquireError</span>, <span class="ident">Capabilities</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">image</span>::<span class="ident">swapchain</span>::<span class="ident">SwapchainImage</span>;
<span class="kw">use</span> <span class="ident">winit</span>::<span class="ident">Window</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">compute</span>::<span class="ident">compu_state</span>::<span class="ident">CompuState</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">image</span>::<span class="ident">ImageUsage</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">compute</span>::<span class="ident">compu_frame</span>::<span class="ident">CompuFrame</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">canvas_frame</span>::{<span class="ident">CanvasFrame</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">pipeline</span>::<span class="ident">depth_stencil</span>::{<span class="ident">DynamicStencilValue</span>, <span class="ident">StencilFaceFlags</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">pipeline</span>::<span class="ident">vertex</span>::{<span class="ident">OneVertexOneInstanceDefinition</span>, <span class="ident">SingleBufferDefinition</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">canvas_state</span>::<span class="ident">CanvasState</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">managed</span>::<span class="ident">shader</span>::<span class="ident">generic_shader</span>::<span class="ident">GenericShader</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">managed</span>::<span class="ident">shader</span>::<span class="ident">text_shader</span>::<span class="ident">TextShader</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">managed</span>::<span class="ident">handles</span>::{<span class="ident">CanvasTextureHandle</span>, <span class="ident">CompiledShaderHandle</span>, <span class="ident">CanvasFontHandle</span>, <span class="ident">CanvasImageHandle</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">compute</span>::<span class="ident">managed</span>::<span class="ident">handles</span>::{<span class="ident">CompuKernelHandle</span>, <span class="ident">CompuBufferHandle</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">util</span>::<span class="ident">vertex</span>::{<span class="ident">VertexTypes</span>, <span class="ident">ColorVertex3D</span>, <span class="ident">TextVertex3D</span>, <span class="ident">TextureVertex3D</span>, <span class="ident">ImageVertex3D</span>};
<span class="doccomment">/// VKProcessor holds the vulkan instance information, the swapchain,</span>
<span class="doccomment">/// and the compute and canvas states</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">VkProcessor</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
<span class="comment">// Vulkan state fields</span>
<span class="kw">pub</span> <span class="ident">instance</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">Instance</span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">physical</span>: <span class="ident">PhysicalDevice</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">device</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">Device</span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">queues</span>: <span class="ident">QueuesIter</span>,
<span class="kw">pub</span> <span class="ident">queue</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">Queue</span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">swapchain</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">Swapchain</span><span class="op"><</span><span class="ident">Window</span><span class="op">></span><span class="op">></span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">swapchain_images</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">SwapchainImage</span><span class="op"><</span><span class="ident">Window</span><span class="op">></span><span class="op">></span><span class="op">></span><span class="op">></span>,
<span class="ident">swapchain_recreate_needed</span>: <span class="ident">bool</span>,
<span class="doccomment">/// State holding textures, images, and their related vertex buffers</span>
<span class="ident">canvas_state</span>: <span class="ident">CanvasState</span>,
<span class="doccomment">/// State holding</span>
<span class="ident">compute_state</span>: <span class="ident">CompuState</span>,
<span class="ident">capabilities</span>: <span class="ident">Capabilities</span>,
}
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">VkProcessor</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
<span class="doccomment">/// Creates a new VkProcessor from an instance and surface</span>
<span class="doccomment">/// This includes the physical device, queues, compute and canvas state</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">instance</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Instance</span><span class="op">></span>, <span class="ident">surface</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Surface</span><span class="op"><</span><span class="ident">Window</span><span class="op">></span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">VkProcessor</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">physical</span> <span class="op">=</span> <span class="ident">PhysicalDevice</span>::<span class="ident">enumerate</span>(<span class="ident">instance</span>).<span class="ident">next</span>().<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">queue_family</span> <span class="op">=</span> <span class="ident">physical</span>.<span class="ident">queue_families</span>().<span class="ident">find</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">q</span><span class="op">|</span> {
<span class="comment">// We take the first queue that supports drawing to our window.</span>
<span class="ident">q</span>.<span class="ident">supports_graphics</span>() <span class="kw-2">&</span><span class="op">&</span>
<span class="ident">surface</span>.<span class="ident">is_supported</span>(<span class="ident">q</span>).<span class="ident">unwrap_or</span>(<span class="bool-val">false</span>) <span class="kw-2">&</span><span class="op">&</span>
<span class="ident">q</span>.<span class="ident">supports_compute</span>()
}).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">device_ext</span> <span class="op">=</span> <span class="ident">DeviceExtensions</span> { <span class="ident">khr_swapchain</span>: <span class="bool-val">true</span>, ..<span class="ident">DeviceExtensions</span>::<span class="ident">none</span>() };
<span class="kw">let</span> (<span class="ident">device</span>, <span class="kw-2">mut</span> <span class="ident">queues</span>) <span class="op">=</span> <span class="ident">Device</span>::<span class="ident">new</span>(<span class="ident">physical</span>,
<span class="ident">physical</span>.<span class="ident">supported_features</span>(),
<span class="kw-2">&</span><span class="ident">device_ext</span>,
[(<span class="ident">queue_family</span>, <span class="number">0.5</span>)].<span class="ident">iter</span>().<span class="ident">cloned</span>()).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">queue</span> <span class="op">=</span> <span class="ident">queues</span>.<span class="ident">next</span>().<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">capabilities</span> <span class="op">=</span> <span class="ident">surface</span>.<span class="ident">capabilities</span>(<span class="ident">physical</span>).<span class="ident">unwrap</span>();
<span class="ident">VkProcessor</span> {
<span class="ident">instance</span>: <span class="ident">instance</span>.<span class="ident">clone</span>(),
<span class="ident">physical</span>: <span class="ident">physical</span>.<span class="ident">clone</span>(),
<span class="ident">device</span>: <span class="ident">device</span>.<span class="ident">clone</span>(),
<span class="ident">queue</span>: <span class="ident">queue</span>.<span class="ident">clone</span>(),
<span class="ident">queues</span>: <span class="ident">queues</span>,
<span class="ident">swapchain</span>: <span class="prelude-val">None</span>,
<span class="ident">swapchain_images</span>: <span class="prelude-val">None</span>,
<span class="ident">swapchain_recreate_needed</span>: <span class="bool-val">false</span>,
<span class="ident">compute_state</span>: <span class="ident">CompuState</span>::<span class="ident">new</span>(),
<span class="ident">capabilities</span>: <span class="ident">capabilities</span>.<span class="ident">clone</span>(),
<span class="ident">canvas_state</span>: <span class="ident">CanvasState</span>::<span class="ident">new</span>(<span class="ident">queue</span>, <span class="ident">device</span>, <span class="ident">physical</span>, <span class="ident">capabilities</span>),
}
}
<span class="doccomment">/// VKProcessor controls the window. So it will let the main loop know when it is done</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_open</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">bool</span> {
<span class="comment">// self.surface</span>
<span class="bool-val">true</span>
}
<span class="doccomment">/// Using the surface, we calculate the surface capabilities and create the swapchain and swapchain images</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">create_swapchain</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">surface</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Surface</span><span class="op"><</span><span class="ident">Window</span><span class="op">></span><span class="op">></span>) {
<span class="kw">let</span> (<span class="kw-2">mut</span> <span class="ident">swapchain</span>, <span class="ident">images</span>) <span class="op">=</span> {
<span class="kw">let</span> <span class="ident">capabilities</span> <span class="op">=</span> <span class="ident">surface</span>.<span class="ident">capabilities</span>(<span class="self">self</span>.<span class="ident">physical</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">usage</span> <span class="op">=</span> <span class="ident">capabilities</span>.<span class="ident">supported_usage_flags</span>;
<span class="kw">let</span> <span class="ident">alpha</span> <span class="op">=</span> <span class="ident">capabilities</span>.<span class="ident">supported_composite_alpha</span>.<span class="ident">iter</span>().<span class="ident">next</span>().<span class="ident">unwrap</span>();
<span class="comment">// Choosing the internal format that the images will have.</span>
<span class="kw">let</span> <span class="ident">format</span> <span class="op">=</span> <span class="ident">capabilities</span>.<span class="ident">supported_formats</span>[<span class="number">0</span>].<span class="number">0</span>;
<span class="comment">// Set the swapchains window dimensions</span>
<span class="kw">let</span> <span class="ident">initial_dimensions</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">dimensions</span>) <span class="op">=</span> <span class="ident">surface</span>.<span class="ident">window</span>().<span class="ident">get_inner_size</span>() {
<span class="comment">// convert to physical pixels</span>
<span class="kw">let</span> <span class="ident">dimensions</span>: (<span class="ident">u32</span>, <span class="ident">u32</span>) <span class="op">=</span> <span class="ident">dimensions</span>.<span class="ident">to_physical</span>(<span class="ident">surface</span>.<span class="ident">window</span>().<span class="ident">get_hidpi_factor</span>()).<span class="ident">into</span>();
[<span class="ident">dimensions</span>.<span class="number">0</span>, <span class="ident">dimensions</span>.<span class="number">1</span>]
} <span class="kw">else</span> {
<span class="comment">// The window no longer exists so exit the application.</span>
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">"window closed"</span>);
};
<span class="ident">Swapchain</span>::<span class="ident">new</span>(<span class="self">self</span>.<span class="ident">device</span>.<span class="ident">clone</span>(),
<span class="ident">surface</span>.<span class="ident">clone</span>(),
<span class="ident">capabilities</span>.<span class="ident">min_image_count</span>, <span class="comment">// number of attachment images</span>
<span class="ident">format</span>,
<span class="ident">initial_dimensions</span>,
<span class="number">1</span>, <span class="comment">// Layers</span>
<span class="ident">usage</span>,
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">queue</span>,
<span class="ident">SurfaceTransform</span>::<span class="ident">Identity</span>,
<span class="ident">alpha</span>,
<span class="ident">PresentMode</span>::<span class="ident">Immediate</span>, <span class="bool-val">true</span>, <span class="prelude-val">None</span>).<span class="ident">unwrap</span>()
};
<span class="self">self</span>.<span class="ident">swapchain</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">swapchain</span>);
<span class="self">self</span>.<span class="ident">swapchain_images</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">images</span>);
}
<span class="doccomment">/// On screen resizes, the swapchain and images must be recreated</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">recreate_swapchain</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">surface</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Surface</span><span class="op"><</span><span class="ident">Window</span><span class="op">></span><span class="op">></span>) {
<span class="kw">let</span> <span class="ident">dimensions</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">dimensions</span>) <span class="op">=</span> <span class="ident">surface</span>.<span class="ident">window</span>().<span class="ident">get_inner_size</span>() {
<span class="kw">let</span> <span class="ident">dimensions</span>: (<span class="ident">u32</span>, <span class="ident">u32</span>) <span class="op">=</span> <span class="ident">dimensions</span>.<span class="ident">to_physical</span>(<span class="ident">surface</span>.<span class="ident">window</span>().<span class="ident">get_hidpi_factor</span>()).<span class="ident">into</span>();
[<span class="ident">dimensions</span>.<span class="number">0</span>, <span class="ident">dimensions</span>.<span class="number">1</span>]
} <span class="kw">else</span> {
<span class="kw">return</span>;
};
<span class="kw">let</span> (<span class="ident">new_swapchain</span>, <span class="ident">new_images</span>) <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">swapchain</span>.<span class="ident">clone</span>().<span class="ident">unwrap</span>().<span class="ident">clone</span>().<span class="ident">recreate_with_dimension</span>(<span class="ident">dimensions</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">r</span>) <span class="op">=</span><span class="op">></span> <span class="ident">r</span>,
<span class="comment">// This error tends to happen when the user is manually resizing the window.</span>
<span class="comment">// Simply restarting the loop is the easiest way to fix this issue.</span>
<span class="prelude-val">Err</span>(<span class="ident">SwapchainCreationError</span>::<span class="ident">UnsupportedDimensions</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"Uh oh"</span>),
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">err</span>)
};
<span class="self">self</span>.<span class="ident">swapchain</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">new_swapchain</span>);
<span class="self">self</span>.<span class="ident">swapchain_images</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">new_images</span>);
}
<span class="doccomment">/// A hardcoded list of textures which can be preloaded from this function</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">preload_textures</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_texture</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"funky-bird.jpg"</span>));
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_texture</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"button.png"</span>));
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_texture</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"background.jpg"</span>));
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_texture</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"test2.png"</span>));
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_texture</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"sfml.png"</span>));
}
<span class="doccomment">/// A hardcoded list of kernels which can be preloaded from this function</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">preload_kernels</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">new_kernel</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"simple-homogenize.compute"</span>), <span class="self">self</span>.<span class="ident">device</span>.<span class="ident">clone</span>());
<span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">new_kernel</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"simple-edge.compute"</span>), <span class="self">self</span>.<span class="ident">device</span>.<span class="ident">clone</span>());
}
<span class="doccomment">/// A hardcoded list of shaders which can be preloaded from this function</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">preload_shaders</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_shader</span>::<span class="op"><</span><span class="ident">GenericShader</span>, <span class="ident">ColorVertex3D</span><span class="op">></span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"color-passthrough"</span>), <span class="self">self</span>.<span class="ident">physical</span>.<span class="ident">clone</span>(), <span class="self">self</span>.<span class="ident">capabilities</span>.<span class="ident">clone</span>());
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_shader</span>::<span class="op"><</span><span class="ident">GenericShader</span>, <span class="ident">TextureVertex3D</span><span class="op">></span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"simple_texture"</span>), <span class="self">self</span>.<span class="ident">physical</span>.<span class="ident">clone</span>(), <span class="self">self</span>.<span class="ident">capabilities</span>.<span class="ident">clone</span>());
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_shader</span>::<span class="op"><</span><span class="ident">GenericShader</span>, <span class="ident">ImageVertex3D</span><span class="op">></span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"simple_image"</span>), <span class="self">self</span>.<span class="ident">physical</span>.<span class="ident">clone</span>(), <span class="self">self</span>.<span class="ident">capabilities</span>.<span class="ident">clone</span>());
<span class="comment">// self.canvas_state.load_shader::<TextShader, TextVertex3D>(String::from("simple_text"), self.physical.clone(), self.capabilities.clone());</span>
}
<span class="doccomment">/// A hardcoded list of shaders which can be proloaded from this function</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">preload_fonts</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">load_font</span>(<span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"sansation.ttf"</span>));
}
<span class="doccomment">/// O(n) Lookup for the matching texture string</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_texture_handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">texture_name</span>: <span class="ident">String</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">CanvasTextureHandle</span><span class="op">></span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">get_texture_handle</span>(<span class="ident">texture_name</span>)
}
<span class="doccomment">/// O(n) Lookup for the matching kernel string</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_kernel_handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">kernel_name</span>: <span class="ident">String</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">CompuKernelHandle</span><span class="op">></span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">get_kernel_handle</span>(<span class="ident">kernel_name</span>)
}
<span class="doccomment">/// O(n) Lookup for the matching shader string</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_shader_handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">shader_name</span>: <span class="ident">String</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">CompiledShaderHandle</span><span class="op">></span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">get_shader_handle</span>(<span class="ident">shader_name</span>)
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_font_handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">font_name</span>: <span class="ident">String</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">CanvasFontHandle</span><span class="op">></span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">get_font_handle</span>(<span class="ident">font_name</span>)
}
<span class="doccomment">/// Create a new image which has the transfer usage</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new_swap_image</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">dimensions</span>: (<span class="ident">u32</span>, <span class="ident">u32</span>)) <span class="op">-</span><span class="op">></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">CanvasImageHandle</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">usage</span> <span class="op">=</span> <span class="ident">ImageUsage</span>::<span class="ident">none</span>();
<span class="ident">usage</span>.<span class="ident">transfer_destination</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="ident">usage</span>.<span class="ident">storage</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">create_image</span>(<span class="ident">dimensions</span>, <span class="ident">usage</span>)
}
<span class="doccomment">/// Builds a compute buffer and returns it's handle</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new_compute_buffer</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">data</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>, <span class="ident">dimensions</span>: (<span class="ident">u32</span>, <span class="ident">u32</span>), <span class="ident">stride</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">CompuBufferHandle</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">new_compute_buffer</span>(<span class="ident">data</span>, <span class="ident">dimensions</span>, <span class="ident">stride</span>, <span class="self">self</span>.<span class="ident">device</span>.<span class="ident">clone</span>())
}
<span class="doccomment">/// Takes a compute buffer handle and returns the read data</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">read_compute_buffer</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">handle</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">CompuBufferHandle</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">read_compute_buffer</span>(<span class="ident">handle</span>)
}
<span class="doccomment">/// Takes a compute buffer handle and writes the received data</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">write_compute_buffer</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">handle</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">CompuBufferHandle</span><span class="op">></span>, <span class="ident">data</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>) {
<span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">write_compute_buffer</span>(<span class="ident">handle</span>, <span class="ident">data</span>)
}
<span class="doccomment">/// Run the VKprocessor for a single frame, consuming the Canvas/Compu Frames</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">run</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>,
<span class="ident">surface</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Arc</span><span class="op"><</span><span class="ident">Surface</span><span class="op"><</span><span class="ident">Window</span><span class="op">></span><span class="op">></span>,
<span class="ident">canvas_frame</span>: <span class="ident">CanvasFrame</span>,
<span class="ident">compute_frame</span>: <span class="ident">CompuFrame</span>,
) {
{
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Waiting at queue"</span>);
<span class="self">self</span>.<span class="ident">queue</span>.<span class="ident">wait</span>();
}
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Frame buffer, future, swapchain recreate"</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">framebuffers</span> <span class="op">=</span>
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">window_size_dependent_setup</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">swapchain_images</span>.<span class="ident">clone</span>().<span class="ident">unwrap</span>().<span class="ident">clone</span>());
<span class="comment">// Whenever the window resizes we need to recreate everything dependent on the window size.</span>
<span class="comment">// In this example that includes the swapchain, the framebuffers and the dynamic state viewport.</span>
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">swapchain_recreate_needed</span> {
<span class="self">self</span>.<span class="ident">recreate_swapchain</span>(<span class="ident">surface</span>);
<span class="ident">framebuffers</span> <span class="op">=</span>
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">window_size_dependent_setup</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">swapchain_images</span>.<span class="ident">clone</span>().<span class="ident">unwrap</span>().<span class="ident">clone</span>());
<span class="self">self</span>.<span class="ident">swapchain_recreate_needed</span> <span class="op">=</span> <span class="bool-val">false</span>;
}
<span class="comment">// This function can block if no image is available. The parameter is an optional timeout</span>
<span class="comment">// after which the function call will return an error.</span>
<span class="kw">let</span> (<span class="ident">image_num</span>, <span class="ident">acquire_future</span>) <span class="op">=</span>
<span class="kw">match</span> <span class="ident">vulkano</span>::<span class="ident">swapchain</span>::<span class="ident">acquire_next_image</span>(
<span class="self">self</span>.<span class="ident">swapchain</span>.<span class="ident">clone</span>().<span class="ident">unwrap</span>().<span class="ident">clone</span>(),
<span class="prelude-val">None</span>,
) {
<span class="prelude-val">Ok</span>(<span class="ident">r</span>) <span class="op">=</span><span class="op">></span> <span class="ident">r</span>,
<span class="prelude-val">Err</span>(<span class="ident">AcquireError</span>::<span class="ident">OutOfDate</span>) <span class="op">=</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">swapchain_recreate_needed</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="kw">return</span>;
}
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=</span><span class="op">></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">err</span>)
};
<span class="ident">drop</span>(<span class="ident">g</span>);
<span class="kw">let</span> <span class="ident">allocated_buffers</span> <span class="op">=</span> {
<span class="comment">// take the canvas frame and create the vertex buffers</span>
<span class="comment">// TODO: This performs gpu buffer creation. Shouldn't be in hotpath??</span>
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Canvas creates GPU buffers"</span>);
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">allocate</span>(<span class="ident">canvas_frame</span>)
};
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">command_buffer</span> <span class="op">=</span>
<span class="ident">AutoCommandBufferBuilder</span>::<span class="ident">primary_one_time_submit</span>(<span class="self">self</span>.<span class="ident">device</span>.<span class="ident">clone</span>(), <span class="self">self</span>.<span class="ident">queue</span>.<span class="ident">family</span>()).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Push compute commands to command buffer"</span>);
<span class="comment">// Add the compute commands</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">command_buffer</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">compute_state</span>.<span class="ident">compute_commands</span>(<span class="ident">compute_frame</span>, <span class="ident">command_buffer</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">canvas_state</span>);
<span class="ident">drop</span>(<span class="ident">g</span>);
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Push draw commands to command buffer"</span>);
<span class="comment">// Add the draw commands</span>
<span class="comment">//let mut command_buffer = self.canvas_state.draw_commands(command_buffer, framebuffers, image_num);</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">command_buffer</span> <span class="op">=</span>
<span class="self">self</span>.<span class="ident">canvas_state</span>.<span class="ident">draw_commands</span>(<span class="ident">command_buffer</span>, <span class="ident">framebuffers</span>, <span class="ident">image_num</span>, <span class="ident">allocated_buffers</span>);
<span class="comment">// And build</span>
<span class="kw">let</span> <span class="ident">command_buffer</span> <span class="op">=</span> <span class="ident">command_buffer</span>.<span class="ident">build</span>().<span class="ident">unwrap</span>();
<span class="ident">drop</span>(<span class="ident">g</span>);
<span class="comment">// Wait on the previous frame, then execute the command buffer and present the image</span>
{
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Joining on the framebuffer"</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">future</span> <span class="op">=</span> <span class="ident">sync</span>::<span class="ident">now</span>(<span class="self">self</span>.<span class="ident">device</span>.<span class="ident">clone</span>())
.<span class="ident">join</span>(<span class="ident">acquire_future</span>);
<span class="ident">drop</span>(<span class="ident">g</span>);
<span class="kw">let</span> <span class="ident">g</span> <span class="op">=</span> <span class="ident">hprof</span>::<span class="ident">enter</span>(<span class="string">"Running the kernel and waiting on the future"</span>);
<span class="kw">let</span> <span class="ident">future</span> <span class="op">=</span> <span class="ident">future</span>
.<span class="ident">then_execute</span>(<span class="self">self</span>.<span class="ident">queue</span>.<span class="ident">clone</span>(), <span class="ident">command_buffer</span>).<span class="ident">unwrap</span>()
.<span class="ident">then_swapchain_present</span>(<span class="self">self</span>.<span class="ident">queue</span>.<span class="ident">clone</span>(), <span class="self">self</span>.<span class="ident">swapchain</span>.<span class="ident">clone</span>().<span class="ident">unwrap</span>().<span class="ident">clone</span>(), <span class="ident">image_num</span>)
.<span class="ident">then_signal_fence_and_flush</span>();
<span class="kw">match</span> <span class="ident">future</span> {
<span class="prelude-val">Ok</span>(<span class="ident">future</span>) <span class="op">=</span><span class="op">></span> {
<span class="ident">future</span>.<span class="ident">wait</span>(<span class="prelude-val">None</span>).<span class="ident">unwrap</span>();
}
<span class="prelude-val">Err</span>(<span class="ident">FlushError</span>::<span class="ident">OutOfDate</span>) <span class="op">=</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">swapchain_recreate_needed</span> <span class="op">=</span> <span class="bool-val">true</span>;
}
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=</span><span class="op">></span> {
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">e</span>);
}
}
}
}
}
</pre></div>
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