Test text rendering

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2026-03-29 10:15:22 -05:00
parent ea898da6c2
commit 1c5e50cc4d
10 changed files with 503 additions and 81 deletions

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Dusk Tools / Texture Creator</title>
<style type="text/css">
* {
box-sizing: border-box;
}
body {
font-size: 16px;
}
canvas {
image-rendering: pixelated;
}
</style>
</head>
<body>
<h1>Dusk Texture Creator</h1>
<p>
Creates texture files. This will not create palletized textures, use the
palette-indexer.html tool for that. This will instead work for all other
kinds of textures.
</p>
<div>
<div>
<input type="file" data-file-input />
</div>
</div>
<div>
<h2>Settings</h2>
<div>
Texture Format:
<div>
<label>
RGBA
<input type="radio" name="texture-type" value="rgba" />
</label><br />
<label>
RGB
<input type="radio" name="texture-type" value="rgb" />
</label><br />
<label>
RGB565
<input type="radio" name="texture-type" value="rgb565" checked />
</label><br />
<label>
RGB5A3 (Dolphin Only)
<input type="radio" name="texture-type" value="rgb5a3" />
</label><br />
</div>
</div>
<div>
<label for="pad-power-of-two">
Pad to power of two
<input type="checkbox" id="pad-power-of-two" name="pad-power-of-two" checked />
</label>
</div>
</div>
<div>
<h2>Preview</h2>
<div>
<label>
Preview Scale:
<input type="number" value="2" data-preview-scale min="1" step="1" />
</label>
</div>
<div>
<label>
Preview Background:
<button data-page-bg-white>White</button>
<button data-page-bg-transparent>Black</button>
<button data-page-bg-checkerboard>Checkerboard</button>
<button data-page-bg-magenta>Magenta</button>
<button data-page-bg-blue>Blue</button>
<button data-page-bg-green>Green</button>
</label>
</div>
<div>
<canvas data-output-preview style="border:1px solid black;"></canvas>
</div>
<div>
<textarea data-output-information readonly rows="15" style="width: 500px;"></textarea>
</div>
<div>
<button data-download>Download Texture</button>
</div>
</div>
</body>
<script type="text/javascript">
const elFileInput = document.querySelector('[data-file-input]');
const elFileError = document.querySelector('[data-file-error]');
const elPreviewScale = document.querySelector('[data-preview-scale]');
const elOutputPreview = document.querySelector('[data-output-preview]');
const elOutputInformation = document.querySelector('[data-output-information]');
const elTextureType = document.querySelectorAll('input[name="texture-type"]');
const elPadPowerOfTwo = document.querySelector('#pad-power-of-two');
const btnDownload = document.querySelector('[data-download]');
const btnBackgroundWhite = document.querySelector('[data-page-bg-white]');
const btnBackgroundTransparent = document.querySelector('[data-page-bg-transparent]');
const btnBackgroundCheckerboard = document.querySelector('[data-page-bg-checkerboard]');
const btnBackgroundMagenta = document.querySelector('[data-page-bg-magenta]');
const btnBackgroundBlue = document.querySelector('[data-page-bg-blue]');
const btnBackgroundGreen = document.querySelector('[data-page-bg-green]');
let image;
let imageName;
let textureData;
let rawData;
let width, height, paddedWidth, paddedHeight;
// Methods
const nextPowerOfTwo = n => {
if(n <= 0) return 1;
return 2 ** Math.ceil(Math.log2(n));
}
const updatePreview = () => {
if(!image) return;
console.log('Updating preview with image:', image);
const scale = parseInt(elPreviewScale.value) || 1;
const padToPowerOfTwo = elPadPowerOfTwo.checked;
const textureType = Array.from(elTextureType).find(r => r.checked)?.value || 'rgba';
width = image.width;
height = image.height;
let scaledWidth = width * scale;
let scaledHeight = height * scale;
paddedWidth = padToPowerOfTwo ? nextPowerOfTwo(width) : width;
paddedHeight = padToPowerOfTwo ? nextPowerOfTwo(height) : height;
let paddedScaledWidth = paddedWidth * scale;
let paddedScaledHeight = paddedHeight * scale;
const tempCanvas = document.createElement('canvas');
tempCanvas.width = paddedWidth;
tempCanvas.height = paddedHeight;
const tempCtx = tempCanvas.getContext('2d');
tempCtx.imageSmoothingEnabled = false;
tempCtx.clearRect(0, 0, tempCanvas.width, tempCanvas.height);
tempCtx.drawImage(image, 0, 0, width, height);
const pixels = tempCtx.getImageData(0, 0, paddedWidth, paddedHeight);
let sizeBytes;
let strTextureType = Array.from(elTextureType).find(r => r.checked)?.value || 'rgba';
strTextureType = strTextureType.toLowerCase();
rawData = new Uint8Array(paddedWidth * paddedHeight * 4);
if(strTextureType === 'rgba') {
textureData = new Uint8Array(pixels.data.buffer);
rawData = new Uint8Array(pixels.data.buffer);
sizeBytes = paddedWidth * paddedHeight * 4;
} else if(strTextureType === 'rgb') {
sizeBytes = paddedWidth * paddedHeight * 3;
textureData = new Uint8Array(sizeBytes);
for(let i = 0, j = 0; i < textureData.length; i += 4, j += 3) {
textureData[j] = pixels.data[i]; // R
textureData[j + 1] = pixels.data[i + 1]; // G
textureData[j + 2] = pixels.data[i + 2]; // B
rawData[i] = pixels.data[i]; // R
rawData[i + 1] = pixels.data[i + 1]; // G
rawData[i + 2] = pixels.data[i + 2]; // B
rawData[i + 3] = 255;
}
} else if(strTextureType === 'rgb565') {
sizeBytes = paddedWidth * paddedHeight * 2;
textureData = new Uint8Array(sizeBytes);
let j = 0;
for (let i = 0; i < pixels.data.length; i += 4) {
const r = pixels.data[i];
const g = pixels.data[i + 1];
const b = pixels.data[i + 2];
const value =
((r & 0xf8) << 8) |
((g & 0xfc) << 3) |
(b >> 3);
textureData[j++] = (value >> 8) & 0xff; // high byte
textureData[j++] = value & 0xff; // low byte
}
// Now convert back to RGBA for preview
for(let i = 0, j = 0; i < textureData.length; i += 2, j += 4) {
const value = (textureData[i] << 8) | textureData[i + 1];
const r = (value >> 11) & 0x1f;
const g = (value >> 5) & 0x3f;
const b = value & 0x1f;
rawData[j] = (r << 3) | (r >> 2); // R
rawData[j + 1] = (g << 2) | (g >> 4); // G
rawData[j + 2] = (b << 3) | (b >> 2); // B
rawData[j + 3] = 255; // A
}
} else if(strTextureType === 'rgb5a3') {
sizeBytes = paddedWidth * paddedHeight * 2;
textureData = new Uint8Array(sizeBytes);
let j = 0;
for (let i = 0; i < pixels.data.length; i += 4) {
const r8 = pixels.data[i];
const g8 = pixels.data[i + 1];
const b8 = pixels.data[i + 2];
const a8 = pixels.data[i + 3];
let value;
// Opaque: 1RRRRRGGGGGBBBBB
if (a8 >= 224) {
const r5 = r8 >> 3;
const g5 = g8 >> 3;
const b5 = b8 >> 3;
value =
0x8000 |
(r5 << 10) |
(g5 << 5) |
b5;
} else {
// Transparent/translucent: 0AAARRRRGGGGBBBB
const a3 = a8 >> 5;
const r4 = r8 >> 4;
const g4 = g8 >> 4;
const b4 = b8 >> 4;
value =
(a3 << 12) |
(r4 << 8) |
(g4 << 4) |
b4;
}
textureData[j++] = (value >> 8) & 0xff; // high byte
textureData[j++] = value & 0xff; // low byte
}
// Convert back to RGBA for preview
for (let i = 0, j = 0; i < textureData.length; i += 2, j += 4) {
const value = (textureData[i] << 8) | textureData[i + 1];
if (value & 0x8000) {
// 1RRRRRGGGGGBBBBB
const r5 = (value >> 10) & 0x1f;
const g5 = (value >> 5) & 0x1f;
const b5 = value & 0x1f;
rawData[j] = (r5 << 3) | (r5 >> 2);
rawData[j + 1] = (g5 << 3) | (g5 >> 2);
rawData[j + 2] = (b5 << 3) | (b5 >> 2);
rawData[j + 3] = 255;
} else {
// 0AAARRRRGGGGBBBB
const a3 = (value >> 12) & 0x7;
const r4 = (value >> 8) & 0xf;
const g4 = (value >> 4) & 0xf;
const b4 = value & 0xf;
rawData[j] = (r4 << 4) | r4;
rawData[j + 1] = (g4 << 4) | g4;
rawData[j + 2] = (b4 << 4) | b4;
rawData[j + 3] = (a3 << 5) | (a3 << 2) | (a3 >> 1);
}
}
} else {
return alert('Unsupported texture type selected.');
}
// Write out pixels.
const imageData = new ImageData(new Uint8ClampedArray(rawData.buffer), paddedWidth, paddedHeight);
tempCanvas.width = paddedWidth;
tempCanvas.height = paddedHeight;
const tempCtx2 = tempCanvas.getContext('2d');
tempCtx2.imageSmoothingEnabled = false;
tempCtx2.putImageData(imageData, 0, 0);
elOutputPreview.width = paddedScaledWidth;
elOutputPreview.height = paddedScaledHeight;
const ctx = elOutputPreview.getContext('2d');
ctx.imageSmoothingEnabled = false;
ctx.clearRect(0, 0, elOutputPreview.width, elOutputPreview.height);
ctx.drawImage(tempCanvas, 0, 0, paddedScaledWidth, paddedScaledHeight);
// Output information
elOutputInformation.value = `Original Size: ${width}x${height}\n`;
elOutputInformation.value += `New Size: ${paddedWidth}x${paddedHeight}\n`;
elOutputInformation.value += `Texture Format: ${textureType}\n`;
elOutputInformation.value += `Size: ${sizeBytes} bytes / (${(sizeBytes / 1024).toFixed(2)} KB)\n`;
}
const onFile = async file => {
elFileInput.disabled = true;
console.log('Selected file:', file);
imageName = file.name;
// Load as image
const img = new Image();
img.onload = () => {
image = img;
elFileInput.disabled = false;
updatePreview();
};
img.onerror = () => {
alert('Failed to load image. Please select a valid image file.');
elFileInput.disabled = false;
};
img.src = URL.createObjectURL(file);
}
// Listeners
elFileInput.addEventListener('change', event => {
if(!event.target.files || event.target.files.length <= 0) {
return alert('No file selected.');
}
const file = event.target.files[0];
if(!file.type.startsWith('image/')) {
return alert('Selected file is not an image.');
}
onFile(file);
});
btnBackgroundWhite.addEventListener('click', () => {
document.body.style.background = 'white';
});
btnBackgroundTransparent.addEventListener('click', () => {
document.body.style.background = 'black';
});
btnBackgroundCheckerboard.addEventListener('click', () => {
document.body.style.background = 'repeating-conic-gradient(#ccc 0% 25%, #eee 0% 50%) 50% / 20px 20px';
});
btnBackgroundMagenta.addEventListener('click', () => {
document.body.style.background = 'magenta';
});
btnBackgroundBlue.addEventListener('click', () => {
document.body.style.background = 'blue';
});
btnBackgroundGreen.addEventListener('click', () => {
document.body.style.background = 'green';
});
elPreviewScale.addEventListener('input', () => {
updatePreview();
});
elPadPowerOfTwo.addEventListener('change', () => {
updatePreview();
});
elTextureType.forEach(radio => {
radio.addEventListener('change', () => {
updatePreview();
});
})
btnDownload.addEventListener('click', () => {
if(!image) {
return alert('Please select an image file before downloading.');
}
// DTX, then texture type, then width, then height, then raw data
const dtfHeader = new TextEncoder().encode('DTX');
const versionHeader = new Uint8Array([1]); // Version 1
let strTextureType = Array.from(elTextureType).find(r => r.checked)?.value || 'rgba';
strTextureType = strTextureType.toLowerCase();
let typeHeader;
if(strTextureType === 'rgba') {
typeHeader = new Uint8Array([0]);
} else if(strTextureType === 'rgb') {
typeHeader = new Uint8Array([1]);
} else if(strTextureType === 'rgb565') {
typeHeader = new Uint8Array([2]);
} else if(strTextureType === 'rgb5a3') {
typeHeader = new Uint8Array([3]);
} else {
return alert('Unsupported texture type selected.');
}
const widthBytes = new Uint32Array([ paddedWidth ]);
const heightBytes = new Uint32Array([ paddedHeight ]);
const blob = new Blob([dtfHeader, versionHeader, typeHeader, widthBytes, heightBytes, textureData], { type: 'application/octet-stream' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `${imageName.replace(/\.[^/.]+$/, "")}.dtx`;
a.click();
URL.revokeObjectURL(url);
});
btnBackgroundCheckerboard.click();
</script>
</html>