我正在使用tensorflow.js转移学习tutorial/guide源代码，并在连接两个张量时出现以下错误：
Couldn't parse line number in error: tfjs@0.13.0:2
precision highp float; tfjs@0.13.0:2
precision highp int;
varying vec2 resultUV;
const vec2 halfCR = vec2(0.5, 0.5);
struct ivec5
{
int x;
int y;
int z;
int w;
int u;
};
struct ivec6
{
int x;
int y;
int z;
int w;
int u;
int v;
};
bool isNaN(float val) {
return (val < 0.0 || 0.0 < val || val == 0.0) ? false : true;
}
bool hasNaN(vec4 values) {
vec4 v1 = values * values;
vec4 v2 = values * values;
return any(notEqual(v1, v2));
}
float getNaN(vec4 values) {
return dot(vec4(1), values);
}
int round(float value) {
return int(floor(value + 0.5));
}
int imod(int x, int y) {
return x - y * (x / y);
}
//Based on the work of Dave Hoskins
//https://www.shadertoy.com/view/4djSRW
#define HASHSCALE1 443.8975
float random(float seed){
vec2 p = resultUV * seed;
vec3 p3 = fract(vec3(p.xyx) * HASHSCALE1);
p3 += dot(p3, p3.yzx + 19.19);
return fract((p3.x + p3.y) * p3.z);
}
vec2 UVfrom1D(int texNumR, int texNumC, int index) {
int texR = index / texNumC;
int texC = index - texR * texNumC;
return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
vec2 UVfrom2D(int texNumR, int texNumC, int numC, int row, int col) {
int index = row * numC + col;
int texR = index / texNumC;
int texC = index - texR * texNumC;
return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
vec2 UVfrom3D(int texNumR, int texNumC, int stride0,
int stride1, int row, int col, int depth) {
// Explicitly use integer operations as dot() only works on floats.
int index = row * stride0 + col * stride1 + depth;
int texR = index / texNumC;
int texC = index - texR * texNumC;
return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
vec2 UVfrom4D(int texNumR, int texNumC, int stride0,
int stride1, int stride2, int row, int col, int depth,
int depth2) {
// Explicitly use integer operations as dot() only works on floats.
int index = row * stride0 + col * stride1 + depth * stride2 + depth2;
int texR = index / texNumC;
int texC = index - texR * texNumC;
return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
vec2 UVfrom5D(int texNumR, int texNumC, int stride0,
int stride1, int stride2, int stride3, int row, int col, int depth,
int depth2, int depth3) {
// Explicitly use integer operations as dot() only works on floats.
int index = row * stride0 + col * stride1 +
depth * stride2 + depth2 * stride3 + depth3;
int texR = index / texNumC;
int texC = index - texR * texNumC;
return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
vec2 UVfrom6D(int texNumR, int texNumC, int stride0,
int stride1, int stride2, int stride3, int stride4,
int row, int col, int depth, int depth2, int depth3, int depth4) {
// Explicitly use integer operations as dot() only works on floats.
int index = row * stride0 + col * stride1 + depth * stride2 + depth2 *
stride3 + depth3 * stride4 + depth4;
int texR = index / texNumC;
int texC = index - texR * texNumC;
return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
float sampleTexture(sampler2D textureSampler, vec2 uv) {
return texture2D(textureSampler, uv).r;
}
void setOutput(float val) {
gl_FragColor = vec4(val, 0, 0, 0);
}
uniform sampler2D A;
uniform sampler2D B;
ivec2 getOutputCoords() {
ivec2 resTexRC = ivec2(resultUV.yx *
vec2(1984, 2352));
int index = resTexRC.x * 2352 + resTexRC.y;
return ivec2(0, index);
}
float getAFlat(int index) {
vec2 uv = UVfrom1D(1792, 2597, index);
return sampleTexture(A, uv);
}
float getA(int index) {
return getAFlat(index);
}
float getA(int row, int col) {
return getA(col);
}
float getBFlat(int index) {
vec2 uv = UVfrom1D(7, 1792, index);
return sampleTexture(B, uv);
}
float getB(int index) {
return getBFlat(index);
}
float getB(int row, int col) {
return getB(col);
}
void main() {
ivec2 coords = getOutputCoords();
int yR = coords.x;
int yC = coords.y;
float value = 0.0;
if (yC < 4653824) {
value = getA(yR, yC);
} else {
yC -= 4653824;
value = getB(yR, yC);
}
setOutput(value);
}
Uncaught Error: Failed to compile fragment shader.
at createFragmentShader (tfjs@0.13.0:2)
at e.createProgram (tfjs@0.13.0:2)
at compileProgram (tfjs@0.13.0:2)
at tfjs@0.13.0:2
at e.getAndSaveBinary (tfjs@0.13.0:2)
at e.compileAndRun (tfjs@0.13.0:2)
at e.concat2Tensors (tfjs@0.13.0:2)
at e.concat (tfjs@0.13.0:2)
at tfjs@0.13.0:2
at tfjs@0.13.0:2
WebGL: CONTEXT_LOST_WEBGL: loseContext: context lost
Uncaught Error: Unable to create fragment WebGLShader.
at throwIfNull (tfjs@0.13.0:2)
at createFragmentShader (tfjs@0.13.0:2)
at e.createProgram (tfjs@0.13.0:2)
at compileProgram (tfjs@0.13.0:2)
at tfjs@0.13.0:2
at e.getAndSaveBinary (tfjs@0.13.0:2)
at e.compileAndRun (tfjs@0.13.0:2)
at e.concat2Tensors (tfjs@0.13.0:2)
at e.concat (tfjs@0.13.0:2)
at tfjs@0.13.0:2
我正在创建一个应用程序，该应用程序通过便携式计算机的麦克风输入接收音频信号，并将信号频率与从便携式计算机的网络摄像头流捕获的图像相关联。我正在将电吉他信号馈送到麦克风输入以手动控制频率，并且我具有用于获取频率数据的Web音频API ScriptProcessorNodes onaudioprocess函数。
当频率清晰时，可以从网络摄像头流中捕获足够的图像，然后使用tf.fromPixels方法将其转换为张量，并通过截短的mobilenet模型进行内部激活，以备后用。在第一轮中，来自截断模型的内部激活被保存到变量中，并且在第一次之后，新的内部激活通过concat（）方法被连接到先前的激活。如果输入信号频率稳定且清晰，所有这些每秒都会发生多次。这可以正常工作一些时间，但是在串联的张量达到4678912的大小后，程序崩溃并产生了上面详述的错误。我不确定张量在这里是否至关重要。
我正在Chrome浏览器中运行该应用程序。
这是导致我猜错的连接函数：
addExample(example, label) {
// One-hot encode the label.
const y = tf.tidy(() => tf.oneHot(tf.tensor1d([label]).toInt(), this.numClasses));
if (this.xs == null) {
// For the first example that gets added, keep example and y so that the
// ControllerDataset owns the memory of the inputs. This makes sure that
// if addExample() is called in a tf.tidy(), these Tensors will not get
// disposed.
this.xs = tf.keep(example);
this.ys = tf.keep(y);
} else {
const oldX = this.xs;
this.xs = tf.keep(oldX.concat(example, 0));
const oldY = this.ys;
this.ys = tf.keep(oldY.concat(y, 0));
oldX.dispose();
oldY.dispose();
y.dispose();
}
}
这是崩溃前的串联张量：
e {isDisposedInternal: false, shape: Array(4), dtype: "float32", size:
4678912, strides: Array(3), …}
dataId: {}
dtype: "float32"
id: 117079
isDisposed: (...)
isDisposedInternal: false
rank: (...)
rankType: "4"
shape: Array(4)
0: 373
1: 7
2: 7
3: 256
length: 4
__proto__: Array(0)
size: 4678912
strides: Array(3)
0: 12544
1: 1792
2: 256
length: 3
__proto__: Array(0)
__proto__: Object
当我尝试original demo (Pacman-game)并将300-400个示例添加到四个控制器之一时，也会出现错误。我的应用程序中的基本逻辑与原始演示中的相同。不同的是类的数量（48个类代表与电吉他不同的音符频率）以及在ScriptProcessorNode中添加示例的方式。同样，所需示例的数量也更大。
我不知道从哪里开始研究错误。我的webGL知识是0。非常感谢您的帮助。