learn-wgpu/assets/js/15.0fda50ec.js

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The values in our uniform buffer need to be updated. There are a few main methods to do that.")]),t._v(" "),n("ol",[n("li",[t._v("We can create a separate buffer and copy it's contents to our "),n("code",[t._v("uniform_buffer")]),t._v(". The new buffer is known as a staging buffer. This method is usually how it's done as it allows the contents of the main buffer (in this case "),n("code",[t._v("uniform_buffer")]),t._v(") to only be accessible by the gpu. The gpu can do some speed optimizations which it couldn't if we could access the buffer via the cpu.")]),t._v(" "),n("li",[t._v("We can call on of the mapping method's "),n("code",[t._v("map_read_async")]),t._v(", and "),n("code",[t._v("map_write_async")]),t._v(" on the buffer itself. 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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.")]),t._v(" "),n("h2",{attrs:{id:"challenge"}},[n("a",{staticClass:"header-anchor",attrs:{href:"#challenge"}},[t._v("#")]),t._v(" Challenge")]),t._v(" "),n("p",[t._v("Have our model rotate on it's own independently of the the camera. "),n("em",[t._v("Hint: you'll need another matrix for this.")])]),t._v(" "),n("AutoGithubLink")],1)}),[],!1,null,null,null);s.default=e.exports}}]);