WebGLRenderingContext:vertexAttrib[1234]f[v]() 方法
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
WebGL API 的 WebGLRenderingContext.vertexAttrib[1234]f[v]()
方法用于为通用顶点属性指定常量值。
语法
js
vertexAttrib1f(index, v0)
vertexAttrib2f(index, v0, v1)
vertexAttrib3f(index, v0, v1, v2)
vertexAttrib4f(index, v0, v1, v2, v3)
vertexAttrib1fv(index, value)
vertexAttrib2fv(index, value)
vertexAttrib3fv(index, value)
vertexAttrib4fv(index, value)
参数
index
-
GLuint
类型,指定了待修改顶点属性的位置。 v0, v1, v2, v3
-
浮点数类型
Number
,用于设置顶点属性的值。 value
-
Float32Array
类型,用于设置顶点属性值的浮点向量。
返回值
无(undefined
)。
示例
js
const a_foobar = gl.getAttribLocation(shaderProgram, "foobar");
//either set each component individually:
gl.vertexAttrib3f(a_foobar, 10.0, 5.0, 2.0);
//or provide a Float32Array:
const floatArray = new Float32Array([10.0, 5.0, 2.0]);
gl.vertexAttrib3fv(a_foobar, floatArray);
规范
Specification |
---|
WebGL Specification # 5.14.10 |