在onDrawFrame内调用glDrawArrays致命信号（GLSurfaceView.Renderer，SurfaceTexture.OnFrameAvailableListener） [英] Fatal signal on glDrawArrays within onDrawFrame (GLSurfaceView.Renderer, SurfaceTexture.OnFrameAvailableListener)

问题描述

我之后得到一个致命的信号11好几

I am getting a Fatal Signal 11 after quite a few

GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

我OnDrawFrame函数中调用。该纹理已经崩溃，我认为这意味着我的顶点和片段着色器正常工作之前正确绘制。

calls within my OnDrawFrame function. The textures are been drawn correctly before the crash, which I believe it means that my vertex and fragment shaders work fine.

我所要做的，就是要融合在一起使用GLSurfaceView.Renderer和SurfaceTexture.OnFrameAvailableListener两个纹理。

What I am trying to do, is to blend two textures together using GLSurfaceView.Renderer and SurfaceTexture.OnFrameAvailableListener.

第一个纹理是现场摄像机preVIEW其表面纹理由它自己的正常工作。第二tetxure仅仅是一个位图图像，这也由它自己的工作正常。但结合他们给人的崩溃。

The first texture is a live camera preview SurfaceTexture which works fine by its own. The second tetxure is just a bitmap image, which also works fine by its own. but combining them gives the crash.

我OnDrawFrame如下：

My OnDrawFrame is as follows:

public void onDrawFrame(GL10 glUnused) { 
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);

    synchronized(this) { 
        if (updateSurface) {
            mSurface.updateTexImage();
            mSurface.getTransformMatrix(mSTMatrix);
            updateSurface = false;
        }
    } 

    maPositionHandle = GLES20.glGetAttribLocation(mProgram, "aPosition");
    maTextureHandle = GLES20.glGetAttribLocation(mProgram, "aTextureCoord");
    muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix"); 
    muSTMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uSTMatrix");
    muCRatioHandle = GLES20.glGetUniformLocation(mProgram, "uCRatio");

    GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, textures[0]);
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    int t1h = GLES20.glGetUniformLocation ( mProgram, "sTexture1" );
    //        GLES20.glUniform1i(t1h, textures[0]);
    GLES20.glUniform1i(t1h, 1);

    GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, textures[1]);
    GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
    int t2h = GLES20.glGetUniformLocation ( mProgram, "sTexture2" );
    GLES20.glUniform1i(t2h, 2);

    GLES20.glUseProgram(mProgram);

    GLES20.glEnable(GLES20.GL_BLEND);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA); 

    mTriangleVertices.position(0);
    GLES20.glEnableVertexAttribArray(maPositionHandle);
    GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false,
            4*5, mTriangleVertices);

    mTriangleVertices.position(3);
    GLES20.glEnableVertexAttribArray(maTextureHandle);
    GLES20.glVertexAttribPointer(maTextureHandle, 3, GLES20.GL_FLOAT, false,
            4*5, mTriangleVertices);

    Matrix.multiplyMM(mMVPMatrix, 0, mVMatrix, 0, mMMatrix, 0);  
    Matrix.multiplyMM(mMVPMatrix, 0, mProjMatrix, 0, mMVPMatrix, 0);

    GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
    GLES20.glUniform1f(muCRatioHandle, mCameraRatio);

    GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
    GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    GLES20.glDisableVertexAttribArray(maPositionHandle);
    GLES20.glDisableVertexAttribArray(maTextureHandle);
    //        GLES20.glFlush();
}

其中mTriangleVertices是：

where mTriangleVertices is:

mTriangleVertices = ByteBuffer.allocateDirect(mTriangleVerticesData.length
            * FLOAT_SIZE_BYTES).order(ByteOrder.nativeOrder()).asFloatBuffer();
mTriangleVertices.put(mTriangleVerticesData).position(0);

和mTriangleVerticesData是：

and mTriangleVerticesData is:

private final float[] mTriangleVerticesData = {
    // X, Y, Z, U, V
    -1.0f, -1.0f, 0, 0.f, 0.f,
    1.0f, -1.0f, 0, 1.f, 0.f,
    -1.0f,  1.0f, 0, 0.f, 1.f,
    1.0f,   1.0f, 0, 1.f, 1.f,
};

任何提示，链接，甚至code段将是非常美联社preciated！

Any tips, links or even code snippets would be much appreciated!

感谢您提前

推荐答案

不知道这是飞机失事的原因，但你至少分配着色器它太高质感的ID。例如;

Don't know if this is the cause for the crash but you're assigning one too high texture ids for shader at least. For example;

GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
int t1h = GLES20.glGetUniformLocation ( mProgram, "sTexture1" );
GLES20.glUniform1i(t1h, 1);

应该读

GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
int t1h = GLES20.glGetUniformLocation ( mProgram, "sTexture1" );
GLES20.glUniform1i(t1h, 0);

编辑：嗯，这可能是飞机失事的原因：

Ah, this might be the cause for the crash:

GLES20.glVertexAttribPointer(maTextureHandle, 3, GLES20.GL_FLOAT, false,
        4*5, mTriangleVertices);

这应该是

GLES20.glVertexAttribPointer(maTextureHandle, 2, GLES20.GL_FLOAT, false,
        4*5, mTriangleVertices);

更可能的，因为你有每个顶​​点两个纹理值。

More likely since you have two texture values per vertex.

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