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add palette support (default is still greyscale for now)

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Dennis Ranke
2021-11-13 22:29:20 +01:00
parent 944856b267
commit 294b9f5634
6 changed files with 49 additions and 17 deletions
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20
site/content/_index.md
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@@ -4,13 +4,14 @@
## Versions
* [v0.1pre1](v0.1pre1)
* [v0.1pre2](v0.1pre2)
## Spec
MicroW8 loads WebAssembly modules with a maximum size of 256kb. You module needs to export
a function `fn tic(time: i32)` which will be called once per frame.
After calling `tic` MicroW8 will display the 320x256 8bpp framebuffer located
at offset 120 in memory.
at offset 120 in memory with the 32bpp palette located at 82040.
The memory has to be imported as `"env" "memory"` and has a maximum size of 256kb (4 pages).
@@ -26,6 +27,18 @@ Other imports provided by the platform, also all in module `env`:
* `fn sin(f32) -> f32`
* `fn tan(f32) -> f32`
* `fn pow(f32) -> f32`
* `fn fmod(f32, f32) -> f32`
* `fn random() -> i32`
* `fn randomf() -> f32`
* `fn randomSeed(i32)`
* `fn cls(color: i32)`
* `fn setPixel(x: i32, y: i32, color: i32)`
* `fn getPixel(x: i32, y: i32) -> i32`
* `fn hline(left: i32, right: i32, y: i32, color: i32)`
* `fn rectangle(x1: f32, y1: f32, x2: f32, y2: f32, color: i32)`
* `fn circle(cx: f32, cy: f32, radius: f32, color: i32)`
## `.uw8` format
@@ -70,5 +83,6 @@ possible but no examples are provided, yet.
## Examples
* [Technotunnel](v0.1pre1#AQrDAQHAAQIBfwp9A0AgAUEAsiABQcACb7JDmhkgQ5MiBCAEIASUIAFBwAJtQYABa7IiBSAFlJKRIgaVIgcgByAAskHQD7KVIgIQAEPNzEw/lCIDlCAHIAeUIAOUIAOUQQGykiADIAOUk5GSIgiUIAOTQQqylCACkiIJqCAFIAaVIAiUQQqylCACkiIKqHMgCEEyspQgBpUiCyACkkEUspSocUEFcbJBArIgC5OUQRaylJeoOgB4IAFBAWoiAUGAgAVIDQALCw==) (199 bytes): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final
* [XorScroll](v0.1pre1#AQovAS0BAX8DQCABIAFBwAJvIABBCm1qIAFBwAJtczoAeCABQQFqIgFBgIAFSA0ACws=) (50 bytes): A simple scrolling XOR pattern. Fun fact: This is the pre-loaded effect when entering a bytebattle.
* [Technotunnel](v0.1pre2#AQrDAQHAAQIBfwp9A0AgAUEAsiABQcACb7JDmhkgQ5MiBCAEIASUIAFBwAJtQYABa7IiBSAFlJKRIgaVIgcgByAAskHQD7KVIgIQAEPNzEw/lCIDlCAHIAeUIAOUIAOUQQGykiADIAOUk5GSIgiUIAOTQQqylCACkiIJqCAFIAaVIAiUQQqylCACkiIKqHMgCEEyspQgBpUiCyACkkEUspSocUEFcbJBArIgC5OUQRaylJeoOgB4IAFBAWoiAUGAgAVIDQALCw==) (199 bytes): A port of my [entry](https://tic80.com/play?cart=1873) in the Outline'21 bytebattle quater final
* [XorScroll](v0.1pre2#AQovAS0BAX8DQCABIAFBwAJvIABBCm1qIAFBwAJtczoAeCABQQFqIgFBgIAFSA0ACws=) (50 bytes): A simple scrolling XOR pattern. Fun fact: This is the pre-loaded effect when entering a bytebattle.
* [CircleWorm](v0.1pre2#AQp7AXkCAX8CfUEgEA0DQCABskEEspUiAkECspUgALJBiCeylSIDQQWylJIQAEEBspJBoAGylCACQQOylSADQQSylJIQAEEBspJBgAGylCADQRGylCACQQKylJIQAEECspJBELKUIAFBAmxBP2oQEiABQQFqIgFBP0gNAAsL) (126 bytes): Just a test for the circle fill function.

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<section>
<h1 class="text-center heading-text">A WebAssembly based sizecoding platform</h1>
</section>
<a href="v0.1pre1">
<a href="v0.1pre2">
<div class="demonstration-gif" style="width:640px;height:512px;background-color:black"></div>
</a>
</div>