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私は様々な情報源に従っているが、成功していない。私はWebGLとOpenGLの新機能です。私はこのコードを提供されて以来、毎回微調整を行ってきました。誰かが共有したいと思うリソースがあれば、自分の質問に答えることができます。これらの三角形には塗りつぶしや境界線のみを作成させるにはどうすればよいですか？
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<!--Include A/S WebGL support libraries-->
<script type="text/javascript" src="../Common/webgl-utils.js"></script>
<script type="text/javascript" src="../Common/initShaders.js"></script>
<script type="text/javascript" src="../Common/MV.js"></script>
<script type="text/javascript" src="../Common/webgl-debug.js"></script>
<script type="text/javascript" src="assignment1.js"></script>
<script id="vertex-shader" type="x-shader/x-vertex">
// GLSL vertex shader code
attribute vec4 vPosition;
void main()
{
gl_Position = vPosition;
}
</script>
<script id="fragment-shader" type="x-shader/x-fragment">
// GLSL fragment shader code
precision mediump float;
uniform float u_time;
void main()
{
gl_FragColor = vec4(abs(sin(u_time)), 1.0, 1.0, 1.0);
}
</script>
<canvas id="gl-canvas" width="512" height=" 512">>
Oops ... your browser doesn't support the HTML5 canvas element
</canvas>
</body>
</html>
である私はJavaScript：
var gl;
var points;
window.onload = function init(){
var canvas = document.getElementById("gl-canvas");
// gl = WebGLUtils.setupWebGL(canvas); // More efficient
gl = WebGLDebugUtils.makeDebugContext(canvas.getContext("webgl")); // For debugging
if (!gl) { alert("WebGL isn't available");
}
// Four 2D Vertices using Angel/Shreiner utility class vac2
var vertices = [
vec2(-0.5, -0.5),
vec2(-0.5, 0.5),
vec2(0.5, 0.5),
vec2(0.5, -0.5)
];
// Configure WebGL
gl.viewport(0, 0, canvas.width, canvas.height);
gl.clearColor(0.0, 0.0, 0.0, 0.0);
// Load shaders and initialize attribute buffers using A/S utility initShaders
var program = initShaders(gl, "vertex-shader", "fragment-shader");
gl.useProgram(program);
// Load the data into the GPU using A/S flatten function
var bufferId = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, bufferId);
gl.bufferData(gl.ARRAY_BUFFER, flatten(vertices), gl.STATIC_DRAW);
// Associate our shader variables with our data buffer
var vPosition = gl.getAttribLocation(program, "vPosition");
gl.vertexAttribPointer(
vPosition, // Specifies the index of the generic vertex attribute to be modified.
2, // Specifies the number of components per generic vertex attribute.
// Must be 1, 2, 3, or 4.
gl.FLOAT, // Specifies the data type of each component in the array.
// GL_BYTE, GL_UNSIGNED_BYTE, GL_SHORT, GL_UNSIGNED_SHORT, GL_FIXED, or GL_FLOAT.
false, // Specifies whether fixed-point data values should be normalized (GL_TRUE)
// or converted directly as fixed-point values (GL_FALSE) when they are accessed.
0, // Specifies the byte offset between consecutive generic vertex attributes.
// If stride is 0, the generic vertex attributes are understood
// to be tightly packed in the array.
0 // Specifies a pointer to the first component
// of the first generic vertex attribute in the array.
);
gl.enableVertexAttribArray(vPosition);
render();
};
function render() {
gl.clear(gl.COLOR_BUFFER_BIT);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
}