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Merge pull request mikeseven#51 from bpedrosa/master
First Attempt to fix windows version
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -7,3 +7,4 @@ Debug | |
| node_modules | ||
| prebuilds/* | ||
| angle/build/* | ||
| example/*.ppm | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,19 +1,20 @@ | ||
| // Create context | ||
| var width = 256 | ||
| var height = 256 | ||
| var gl = require('../index.js')(width, height) | ||
| var createContext = require('../index'); | ||
| var utils = require('./utils.js'); | ||
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| // Clear screen to red | ||
| gl.clearColor(1.0, 1.0, 1.0, 1.0) | ||
| gl.colorMask(true, true, true, true) | ||
| gl.clear(gl.COLOR_BUFFER_BIT) | ||
| function main() { | ||
| // Create context | ||
| var width = 64 | ||
| var height = 64 | ||
| var gl = createContext(width, height) | ||
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| // Write output | ||
| var pixels = new Uint8Array(width * height * 4) | ||
| gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, pixels) | ||
| process.stdout.write(['P3\n# gl.ppm\n', width, ' ', height, '\n255\n'].join('')) | ||
| for (var i = 0; i < pixels.length; i += 3) { | ||
| process.stdout.write(pixels[i] + ' ' + pixels[i + 1] + ' ' + pixels[i + 2] + ' ') | ||
| // Clear screen to red | ||
| gl.clearColor(1.0, 0.0, 0.0, 1.0) | ||
| gl.colorMask(true, true, true, true) | ||
| gl.clear(gl.COLOR_BUFFER_BIT) | ||
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| utils.dumpBuffer(gl, width, height) | ||
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| gl.destroy() | ||
| } | ||
|
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| gl.destroy() | ||
| main(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| var createContext = require('../index') | ||
| var utils = require('./utils'); | ||
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| function main() { | ||
| // Create context | ||
| var width = 64 | ||
| var height = 64 | ||
| var gl = createContext(width, height) | ||
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||
| var vertex_src = [ | ||
| 'attribute vec2 a_position;', | ||
| 'void main() {', | ||
| 'gl_Position = vec4(a_position, 0, 1);', | ||
| '}' | ||
| ].join('\n') | ||
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| var fragment_src = [ | ||
| 'void main() {', | ||
| 'gl_FragColor = vec4(0, 1, 0, 1); // green', | ||
| '}' | ||
| ].join('\n') | ||
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| // setup a GLSL program | ||
| var program = utils.createProgramFromSources(gl, [vertex_src, fragment_src]); | ||
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| if(!program) { | ||
| return; | ||
| } | ||
| gl.useProgram(program); | ||
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| // look up where the vertex data needs to go. | ||
| var positionLocation = gl.getAttribLocation(program, "a_position"); | ||
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| // Create a buffer and put a single clipspace rectangle in | ||
| // it (2 triangles) | ||
| var buffer = gl.createBuffer(); | ||
| gl.bindBuffer(gl.ARRAY_BUFFER, buffer); | ||
| gl.bufferData( | ||
| gl.ARRAY_BUFFER, | ||
| new Float32Array([ | ||
| -1.0, -1.0, | ||
| 1.0, -1.0, | ||
| -1.0, 1.0, | ||
| -1.0, 1.0, | ||
| 1.0, -1.0, | ||
| 1.0, 1.0]), | ||
| gl.STATIC_DRAW); | ||
| gl.enableVertexAttribArray(positionLocation); | ||
| gl.vertexAttribPointer(positionLocation, 2, gl.FLOAT, false, 0, 0); | ||
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| // draw | ||
| gl.drawArrays(gl.TRIANGLES, 0, 6); | ||
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| utils.dumpBuffer(gl, width, height) | ||
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| gl.destroy() | ||
| } | ||
|
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| main(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| function dumpBuffer(gl, width, height) { | ||
| // Write output | ||
| var pixels = new Uint8Array(width * height * 4) | ||
| gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, pixels) | ||
| process.stdout.write(['P3\n# gl.ppm\n', width, ' ', height, '\n255\n'].join('')) | ||
| for (var i = 0; i < pixels.length; i += 4) { | ||
| process.stdout.write(pixels[i] + ' ' + pixels[i + 1] + ' ' + pixels[i + 2] + ' ') | ||
| } | ||
| } | ||
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| function drawTriangle(gl) { | ||
| var buffer = gl.createBuffer() | ||
| gl.bindBuffer(gl.ARRAY_BUFFER, buffer) | ||
| gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([-2, -2, -2, 4, 4, -2]), gl.STREAM_DRAW) | ||
| gl.enableVertexAttribArray(0) | ||
| gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0) | ||
| gl.drawArrays(gl.TRIANGLES, 0, 3) | ||
| gl.bindBuffer(gl.ARRAY_BUFFER, null) | ||
| gl.disableVertexAttribArray(0) | ||
| gl.deleteBuffer(buffer) | ||
| } | ||
|
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| function loadShader(gl, shaderSource, shaderType) { | ||
| var shader = gl.createShader(shaderType); | ||
| gl.shaderSource(shader, shaderSource); | ||
| gl.compileShader(shader); | ||
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| // Check the compile status | ||
| var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS); | ||
| if (!compiled) { | ||
| // Something went wrong during compilation; get the error | ||
| var lastError = gl.getShaderInfoLog(shader); | ||
| console.log("*** Error compiling shader '" + shader + "':" + lastError); | ||
| gl.deleteShader(shader); | ||
| return null; | ||
| } | ||
|
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| return shader; | ||
| } | ||
|
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| function createProgram(gl, shaders, opt_attribs, opt_locations) { | ||
| var program = gl.createProgram(); | ||
| shaders.forEach(function(shader) { | ||
| gl.attachShader(program, shader); | ||
| }); | ||
| if (opt_attribs) { | ||
| obj_attrib.forEach(function(attrib, ndx) { | ||
| gl.bindAttribLocation( | ||
| program, | ||
| opt_locations ? opt_locations[ndx] : ndx, | ||
| attrib); | ||
| }); | ||
| } | ||
| gl.linkProgram(program); | ||
|
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| // Check the link status | ||
| var linked = gl.getProgramParameter(program, gl.LINK_STATUS); | ||
| if (!linked) { | ||
| // something went wrong with the link | ||
| var lastError = gl.getProgramInfoLog(program); | ||
| console.log("Error in program linking:" + lastError); | ||
|
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| gl.deleteProgram(program); | ||
| return null; | ||
| } | ||
| return program; | ||
| } | ||
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| function createProgramFromSources(gl, shaderSources, opt_attribs, opt_locations) { | ||
| var defaultShaderType = [ | ||
| "VERTEX_SHADER", | ||
| "FRAGMENT_SHADER", | ||
| ]; | ||
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| var shaders = []; | ||
| for (var ii = 0; ii < shaderSources.length; ++ii) { | ||
| shaders.push(loadShader(gl, shaderSources[ii], gl[defaultShaderType[ii]])); | ||
| } | ||
| return createProgram(gl, shaders, opt_attribs, opt_locations); | ||
| } | ||
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| module.exports.dumpBuffer = dumpBuffer; | ||
| module.exports.drawTriangle = drawTriangle; | ||
| module.exports.loadShader = loadShader; | ||
| module.exports.createProgram = createProgram; | ||
| module.exports.createProgramFromSources = createProgramFromSources; |