| # Simplest Sysmem Example |
| |
| This component contains 3 examples that demonstrates how to render a simple image using sysmem buffer allocation and Flatland API in C++. |
| |
| * `--png`: Loads the smiley.png file from package data, and renders it on screen. This uses RGBA pixel format. |
| * `--rect`: Renders a fuchsia rectangle on screen using Flatland's `CreateFilledRect` API. |
| * `--block`: Generates 4 BGRA32 formatted colored blocks on screen. |
| |
| NOTE: Currently `ffx session add` does not support passing arguments for `.cm` components (https://fxbug.dev/42178074). Until the support is added in ffx session plugin, to change the input arg, you will need to modify `simplest_sysmem.cml`. |
| |
| ## Usage |
| |
| ```shell |
| $ fx set terminal.x64 --with //src/ui/examples/simplest_sysmem |
| $ fx build |
| # Start package server (ex: fx serve) |
| # Start the emulator (ex: ffx emu) |
| # Login (don't forget the password you set) |
| $ ffx session add fuchsia-pkg://fuchsia.com/simplest_sysmem#meta/simplest_sysmem.cm |
| |
| # Note: If you are modifying the example, you don't have to restart the emulator, iterate with: |
| $ ffx session restart |
| # Login again with the password you previously set |
| ffx session add fuchsia-pkg://fuchsia.com/simplest_sysmem#meta/simplest_sysmem.cm |
| ``` |
