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nujabes/20150214 hansumo WebGL 0.ipynb

Last active August 29, 2015 14:15
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20150214 hansumo WebGL 1.ipynb
{
"metadata": {
"name": "",
"signature": "sha256:7df5f85ad21fce7800ef4f6ec64ee27a378ce8c5af6c548abbb0a4084b56341f"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# WEBGL \uae30\ucd08 \uc14b\uc5c5"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"%%html\n",
"<canvas id=\"ex1\"></canvas>\n",
"<script>\n",
"var gl = document.querySelector('#ex1').getContext('webgl');\n",
"gl.canvas.width = 200;\n",
"gl.canvas.height = 200;\n",
"gl.clearColor(1, 0, 0, 1);\n",
"gl.clear(gl.COLOR_BUFFER_BIT);\n",
"</script>"
],
"language": "python",
"metadata": {},
"outputs": [
{
"html": [
"<canvas id=\"ex1\"></canvas>\n",
"<script>\n",
"var gl = document.querySelector('#ex1').getContext('webgl');\n",
"gl.canvas.width = 200;\n",
"gl.canvas.height = 200;\n",
"gl.clearColor(1, 0, 0, 1);\n",
"gl.clear(gl.COLOR_BUFFER_BIT);\n",
"</script>"
],
"metadata": {},
"output_type": "display_data",
"text": [
"<IPython.core.display.HTML at 0x10fc97c50>"
]
}
],
"prompt_number": 6
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## vertex shader"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"%%html\n",
"<canvas id=\"ex2\"></canvas>\n",
"<script id=\"vs2\" type=\"x-shader/x-vertex-shader\">\n",
" attribute vec2 a_pos;\n",
" void main() {\n",
" gl_Position = vec4(a_pos, 0.0, 1.0);\n",
" }\n",
"</script>\n",
"<script id=\"fs2\" type=\"x-shader/x-fragment-shader\">\n",
" precision mediump float;\n",
" uniform vec2 resolution;\n",
" void main() {\n",
" gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n",
" }\n",
"</script>\n",
"<script>\n",
" var gl = document.querySelector('#ex2').getContext('webgl');\n",
" gl.canvas.width = 200;\n",
" gl.canvas.height = 200;\n",
" gl.clearColor(0, 0, 0, 1);\n",
" gl.clear(gl.COLOR_BUFFER_BIT);\n",
" gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);\n",
" \n",
" var vs = gl.createShader(gl.VERTEX_SHADER);\n",
" var vsSrc = document.querySelector('#vs2').textContent;\n",
"\n",
" var fs = gl.createShader(gl.FRAGMENT_SHADER);\n",
" var fsSrc = document.querySelector('#fs2').textContent;\n",
" \n",
" gl.shaderSource(vs, vsSrc);\n",
" gl.compileShader(vs);\n",
" gl.shaderSource(fs, fsSrc);\n",
" gl.compileShader(fs);\n",
"\n",
" if(!gl.getShaderInfoLog(vs)){\n",
" console.log(gl.getShaderInfoLog(vs));\n",
" };\n",
" if(!gl.getShaderInfoLog(fs)){\n",
" console.log(gl.getShaderInfoLog(fs));\n",
" };\n",
" \n",
" var prog = gl.createProgram();\n",
" gl.attachShader(prog, vs);\n",
" gl.attachShader(prog, fs);\n",
" gl.linkProgram(prog);\n",
" if(!gl.getProgramInfoLog(prog)){\n",
" console.log(gl.getProgramInfoLog(prog));\n",
" };\n",
" \n",
" var a_pos = gl.getAttribLocation(prog, 'a_pos');\n",
" gl.enableVertexAttribArray(a_pos);\n",
" var vb = gl.createBuffer();\n",
" gl.bindBuffer(gl.ARRAY_BUFFER, vb);\n",
" var vb_data = new Float32Array([-1, -1, 1, -1, -1, 1, 1, 1]);\n",
" gl.bufferData(gl.ARRAY_BUFFER, vb_data, gl.STATIC_DRAW);\n",
" gl.useProgram(prog);\n",
" var u_resolution = gl.getUniformLocation(prog, 'resolution');\n",
" gl.uniform2f(u_resolution, gl.canvas.width, gl.canvas.height);\n",
" gl.vertexAttribPointer(a_pos, 2, gl.FLOAT, false, 0, 0);\n",
" \n",
" gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);\n",
"</script>"
],
"language": "python",
"metadata": {},
"outputs": [
{
"html": [
"<canvas id=\"ex2\"></canvas>\n",
"<script id=\"vs2\" type=\"x-shader/x-vertex-shader\">\n",
" attribute vec2 a_pos;\n",
" void main() {\n",
" gl_Position = vec4(a_pos, 0.0, 1.0);\n",
" }\n",
"</script>\n",
"<script id=\"fs2\" type=\"x-shader/x-fragment-shader\">\n",
" precision mediump float;\n",
" uniform vec2 resolution;\n",
" void main() {\n",
" gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n",
" }\n",
"</script>\n",
"<script>\n",
" var gl = document.querySelector('#ex2').getContext('webgl');\n",
" gl.canvas.width = 200;\n",
" gl.canvas.height = 200;\n",
" gl.clearColor(0, 0, 0, 1);\n",
" gl.clear(gl.COLOR_BUFFER_BIT);\n",
" gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);\n",
" \n",
" var vs = gl.createShader(gl.VERTEX_SHADER);\n",
" var vsSrc = document.querySelector('#vs2').textContent;\n",
"\n",
" var fs = gl.createShader(gl.FRAGMENT_SHADER);\n",
" var fsSrc = document.querySelector('#fs2').textContent;\n",
" \n",
" gl.shaderSource(vs, vsSrc);\n",
" gl.compileShader(vs);\n",
" gl.shaderSource(fs, fsSrc);\n",
" gl.compileShader(fs);\n",
"\n",
" if(!gl.getShaderInfoLog(vs)){\n",
" console.log(gl.getShaderInfoLog(vs));\n",
" };\n",
" if(!gl.getShaderInfoLog(fs)){\n",
" console.log(gl.getShaderInfoLog(fs));\n",
" };\n",
" \n",
" var prog = gl.createProgram();\n",
" gl.attachShader(prog, vs);\n",
" gl.attachShader(prog, fs);\n",
" gl.linkProgram(prog);\n",
" if(!gl.getProgramInfoLog(prog)){\n",
" console.log(gl.getProgramInfoLog(prog));\n",
" };\n",
" \n",
" var a_pos = gl.getAttribLocation(prog, 'a_pos');\n",
" gl.enableVertexAttribArray(a_pos);\n",
" var vb = gl.createBuffer();\n",
" gl.bindBuffer(gl.ARRAY_BUFFER, vb);\n",
" var vb_data = new Float32Array([-1, -1, 1, -1, -1, 1, 1, 1]);\n",
" gl.bufferData(gl.ARRAY_BUFFER, vb_data, gl.STATIC_DRAW);\n",
" gl.useProgram(prog);\n",
" var u_resolution = gl.getUniformLocation(prog, 'resolution');\n",
" gl.uniform2f(u_resolution, gl.canvas.width, gl.canvas.height);\n",
" gl.vertexAttribPointer(a_pos, 2, gl.FLOAT, false, 0, 0);\n",
" \n",
" gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);\n",
"</script>"
],
"metadata": {},
"output_type": "display_data",
"text": [
"<IPython.core.display.HTML at 0x10fc97990>"
]
}
],
"prompt_number": 67
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 63
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
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