Initial Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
LLM Generation
Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
Output
Here's an HTML file that uses WebGL to draw a triangle on a full-page canvas:
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142 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('Unable to initialize WebGL. Your browser may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per vertex
gl.FLOAT, // the data is 32bit floats
false, // don't normalize
0, // stride
0 // offset
);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
This HTML file does the following:
1. Sets up a full-page canvas using CSS.
2. Defines vertex and fragment shaders for drawing a simple colored triangle.
3. Initializes WebGL context and sets up the shader program.
4. Creates a buffer with triangle vertex positions.
5. Draws the triangle using WebGL.
6. Handles window resizing to maintain full-page coverage.
When you open this file in a web browser that supports WebGL, you should see a red triangle drawn on a black background, filling the entire browser window. The triangle will be redrawn to fit the window if you resize the browser.
Extract Code
I extracted the following code from that output:
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142 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('Unable to initialize WebGL. Your browser may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per vertex
gl.FLOAT, // the data is 32bit floats
false, // don't normalize
0, // stride
0 // offset
);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
Check if all of the following conditions are true:
HTML Render
Rendering the webpage gives the following image:
LLM Generation
Query
This is a screenshot of a webpage that draws something with webgl. I'm trying to see if it drew what I wanted. Describe what is drawn in this image?
Output
The image shows a red equilateral triangle centered on a black background. The triangle is oriented with one of its vertices pointing upwards.
LLM Generation
Query
Does this answer say that there is a picture of a triangle "The image shows a red equilateral triangle centered on a black background. The triangle is oriented with one of its vertices pointing upwards."? Answer "Yes it does" or "No it does not".
Output
Yes it does.
Substring Evaluation
Testing if the previous output contains the string es it does: True
Check this condition is not true:
Substring Evaluation
Testing if the previous output contains the string THREE.: False
Final Answer: True
Final Answer: True
Initial Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
LLM Generation
Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
Output
Here's a complete HTML file that uses WebGL to draw a triangle on a full-page canvas:
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139
140 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
alert('Unable to initialize WebGL. Your browser or machine may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
-0.7, -0.7,
0.0, 0.7,
0.7, -0.7,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per iteration
gl.FLOAT, // the data is 32bit floats
false, // don't normalize the data
0, // 0 = move forward size * sizeof(type) each iteration to get the next position
0 // start at the beginning of the buffer
);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
This HTML file does the following:
1. Sets up a full-page canvas using CSS.
2. Defines vertex and fragment shaders as strings.
3. Implements helper functions to initialize shaders and create the shader program.
4. Defines a `main` function that initializes WebGL, creates buffers, and draws the scene.
5. Creates a triangle by defining three vertices in the `initBuffers` function.
6. Draws the triangle in the `drawScene` function.
7. Calls `main` when the window loads and resizes.
When you open this HTML file in a web browser that supports WebGL, you should see a red triangle drawn on a black background, filling the entire browser window. The triangle will automatically resize if you change the browser window size.
Extract Code
I extracted the following code from that output:
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139
140 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
alert('Unable to initialize WebGL. Your browser or machine may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
-0.7, -0.7,
0.0, 0.7,
0.7, -0.7,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per iteration
gl.FLOAT, // the data is 32bit floats
false, // don't normalize the data
0, // 0 = move forward size * sizeof(type) each iteration to get the next position
0 // start at the beginning of the buffer
);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
Check if all of the following conditions are true:
HTML Render
Rendering the webpage gives the following image:
LLM Generation
Query
This is a screenshot of a webpage that draws something with webgl. I'm trying to see if it drew what I wanted. Describe what is drawn in this image?
Output
The image shows a red equilateral triangle centered on a black background. The triangle is solid and takes up a significant portion of the image.
LLM Generation
Query
Does this answer say that there is a picture of a triangle "The image shows a red equilateral triangle centered on a black background. The triangle is solid and takes up a significant portion of the image."? Answer "Yes it does" or "No it does not".
Output
Yes it does.
Substring Evaluation
Testing if the previous output contains the string es it does: True
Check this condition is not true:
Substring Evaluation
Testing if the previous output contains the string THREE.: False
Final Answer: True
Final Answer: True
Initial Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
LLM Generation
Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
Output
Here's a complete HTML file that uses WebGL to draw a triangle on a full-page canvas:
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141
142 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('Unable to initialize WebGL. Your browser may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per iteration
gl.FLOAT, // the data is 32bit floats
false, // don't normalize
0, // stride (0 = use type & numComponents above)
0 // offset into the buffer
);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
This HTML file does the following:
1. Sets up a full-page canvas using CSS.
2. Defines vertex and fragment shaders as strings.
3. Implements helper functions to initialize the WebGL context, compile shaders, and create the shader program.
4. Defines a `main()` function that initializes WebGL and sets up the scene.
5. Creates a buffer with triangle vertex positions.
6. Draws the triangle using the shaders and buffer data.
7. Adds event listeners to ensure the canvas resizes with the window.
When you open this HTML file in a WebGL-supported browser, you should see a red triangle drawn on a black background, filling the entire browser window. The triangle will automatically resize if you change the window size.
Extract Code
I extracted the following code from that output:
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142 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('Unable to initialize WebGL. Your browser may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per iteration
gl.FLOAT, // the data is 32bit floats
false, // don't normalize
0, // stride (0 = use type & numComponents above)
0 // offset into the buffer
);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
Check if all of the following conditions are true:
HTML Render
Rendering the webpage gives the following image:
LLM Generation
Query
This is a screenshot of a webpage that draws something with webgl. I'm trying to see if it drew what I wanted. Describe what is drawn in this image?
Output
The image shows a red equilateral triangle centered on a black background. The triangle is oriented with one of its vertices pointing upwards.
LLM Generation
Query
Does this answer say that there is a picture of a triangle "The image shows a red equilateral triangle centered on a black background. The triangle is oriented with one of its vertices pointing upwards."? Answer "Yes it does" or "No it does not".
Output
Yes it does.
Substring Evaluation
Testing if the previous output contains the string es it does: True
Check this condition is not true:
Substring Evaluation
Testing if the previous output contains the string THREE.: False
Final Answer: True
Final Answer: True
Initial Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
LLM Generation
Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
Output
Here's an HTML file that uses WebGL to draw a triangle on a canvas that takes up the full page:
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110 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 a_position;
void main() {
gl_Position = a_position;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function createShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('Shader compilation error:', gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function createProgram(gl, vertexShader, fragmentShader) {
const program = gl.createProgram();
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);
gl.linkProgram(program);
if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
console.error('Program linking error:', gl.getProgramInfoLog(program));
gl.deleteProgram(program);
return null;
}
return program;
}
function main() {
const canvas = document.getElementById('glCanvas');
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('WebGL not supported');
return;
}
const vertexShader = createShader(gl, gl.VERTEX_SHADER, vertexShaderSource);
const fragmentShader = createShader(gl, gl.FRAGMENT_SHADER, fragmentShaderSource);
const program = createProgram(gl, vertexShader, fragmentShader);
const positionAttributeLocation = gl.getAttribLocation(program, 'a_position');
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
function resizeCanvas() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
gl.viewport(0, 0, canvas.width, canvas.height);
}
window.addEventListener('resize', resizeCanvas);
resizeCanvas();
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(program);
gl.enableVertexAttribArray(positionAttributeLocation);
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
gl.vertexAttribPointer(positionAttributeLocation, 2, gl.FLOAT, false, 0, 0);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
main();
</script>
</body>
</html>
|
This HTML file does the following:
1. Sets up a full-page canvas using CSS.
2. Defines vertex and fragment shaders as strings.
3. Creates helper functions to compile shaders and link the WebGL program.
4. In the `main` function:
- Gets the WebGL context.
- Creates and compiles shaders.
- Creates and links the WebGL program.
- Sets up a buffer with triangle vertex positions.
- Handles canvas resizing to always fit the full page.
- Clears the canvas and draws the triangle.
When you open this HTML file in a web browser that supports WebGL, you should see a red triangle drawn on a black background, with the canvas taking up the full page. The triangle will maintain its size and position relative to the canvas as you resize the window.
Extract Code
I extracted the following code from that output:
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110 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 a_position;
void main() {
gl_Position = a_position;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function createShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('Shader compilation error:', gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function createProgram(gl, vertexShader, fragmentShader) {
const program = gl.createProgram();
gl.attachShader(program, vertexShader);
gl.attachShader(program, fragmentShader);
gl.linkProgram(program);
if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
console.error('Program linking error:', gl.getProgramInfoLog(program));
gl.deleteProgram(program);
return null;
}
return program;
}
function main() {
const canvas = document.getElementById('glCanvas');
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('WebGL not supported');
return;
}
const vertexShader = createShader(gl, gl.VERTEX_SHADER, vertexShaderSource);
const fragmentShader = createShader(gl, gl.FRAGMENT_SHADER, fragmentShaderSource);
const program = createProgram(gl, vertexShader, fragmentShader);
const positionAttributeLocation = gl.getAttribLocation(program, 'a_position');
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
function resizeCanvas() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
gl.viewport(0, 0, canvas.width, canvas.height);
}
window.addEventListener('resize', resizeCanvas);
resizeCanvas();
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(program);
gl.enableVertexAttribArray(positionAttributeLocation);
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
gl.vertexAttribPointer(positionAttributeLocation, 2, gl.FLOAT, false, 0, 0);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
main();
</script>
</body>
</html>
|
Check if all of the following conditions are true:
HTML Render
Rendering the webpage gives the following image:
LLM Generation
Query
This is a screenshot of a webpage that draws something with webgl. I'm trying to see if it drew what I wanted. Describe what is drawn in this image?
Output
The image shows a red equilateral triangle centered on a black background. The triangle is oriented with one of its vertices pointing upwards.
LLM Generation
Query
Does this answer say that there is a picture of a triangle "The image shows a red equilateral triangle centered on a black background. The triangle is oriented with one of its vertices pointing upwards."? Answer "Yes it does" or "No it does not".
Output
Yes it does.
Substring Evaluation
Testing if the previous output contains the string es it does: True
Check this condition is not true:
Substring Evaluation
Testing if the previous output contains the string THREE.: False
Final Answer: True
Final Answer: True
Initial Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
LLM Generation
Query
Draw an image of a triangle using WebGL in a single HTML file. Make the canvas take the full page.
Output
Here's an HTML file that uses WebGL to draw a triangle on a full-page canvas:
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140 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('Unable to initialize WebGL. Your browser may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per iteration
gl.FLOAT, // the data is 32bit floats
false, // don't normalize the data
0, // 0 = move forward size * sizeof(type) each iteration to get the next position
0 // start at the beginning of the buffer
);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
This HTML file does the following:
1. Sets up a full-page canvas using CSS.
2. Defines vertex and fragment shaders as strings.
3. Implements helper functions to initialize the WebGL program and shaders.
4. Creates a `main` function that initializes WebGL and sets up the scene.
5. Implements `initBuffers` to create a buffer with triangle vertex positions.
6. Implements `drawScene` to render the triangle.
7. Adds event listeners for window load and resize to ensure the canvas always fills the page.
When you open this HTML file in a WebGL-supported browser, you should see a red triangle drawn on a black background, with the canvas filling the entire page. The triangle will be redrawn to fit the page if you resize the window.
Extract Code
I extracted the following code from that output:
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140 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>WebGL Triangle</title>
<style>
body, html {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
overflow: hidden;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="glCanvas"></canvas>
<script>
const vertexShaderSource = `
attribute vec4 aVertexPosition;
void main() {
gl_Position = aVertexPosition;
}
`;
const fragmentShaderSource = `
precision mediump float;
void main() {
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); // Red color
}
`;
function initShaderProgram(gl, vsSource, fsSource) {
const vertexShader = loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
console.error('Unable to initialize the shader program: ' + gl.getProgramInfoLog(shaderProgram));
return null;
}
return shaderProgram;
}
function loadShader(gl, type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
console.error('An error occurred compiling the shaders: ' + gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
return shader;
}
function main() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const gl = canvas.getContext('webgl');
if (!gl) {
console.error('Unable to initialize WebGL. Your browser may not support it.');
return;
}
const shaderProgram = initShaderProgram(gl, vertexShaderSource, fragmentShaderSource);
const programInfo = {
program: shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(shaderProgram, 'aVertexPosition'),
},
};
const buffers = initBuffers(gl);
drawScene(gl, programInfo, buffers);
}
function initBuffers(gl) {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
0.0, 0.5,
-0.5, -0.5,
0.5, -0.5,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return {
position: positionBuffer,
};
}
function drawScene(gl, programInfo, buffers) {
gl.clearColor(0.0, 0.0, 0.0, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
gl.useProgram(programInfo.program);
gl.enableVertexAttribArray(programInfo.attribLocations.vertexPosition);
gl.bindBuffer(gl.ARRAY_BUFFER, buffers.position);
gl.vertexAttribPointer(
programInfo.attribLocations.vertexPosition,
2, // 2 components per iteration
gl.FLOAT, // the data is 32bit floats
false, // don't normalize the data
0, // 0 = move forward size * sizeof(type) each iteration to get the next position
0 // start at the beginning of the buffer
);
gl.drawArrays(gl.TRIANGLES, 0, 3);
}
window.onload = main;
window.onresize = function() {
const canvas = document.getElementById('glCanvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
main();
};
</script>
</body>
</html>
|
Check if all of the following conditions are true:
HTML Render
Rendering the webpage gives the following image:
LLM Generation
Query
This is a screenshot of a webpage that draws something with webgl. I'm trying to see if it drew what I wanted. Describe what is drawn in this image?
Output
The image shows a red equilateral triangle centered on a black background. The triangle is solid and uniformly colored.
LLM Generation
Query
Does this answer say that there is a picture of a triangle "The image shows a red equilateral triangle centered on a black background. The triangle is solid and uniformly colored."? Answer "Yes it does" or "No it does not".
Output
Yes it does.
Substring Evaluation
Testing if the previous output contains the string es it does: True
Check this condition is not true:
Substring Evaluation
Testing if the previous output contains the string THREE.: False
Final Answer: True
Final Answer: True