glDrawArrays爲特定着色器拋出GL_INVALID_OPERATION異常

我在android上使用open gl es顯示用透明顏色替換的黑色視頻。但是當我使用我的特定着色器GL_INVALID_OPERATION錯誤代碼。glDrawArrays爲特定着色器拋出GL_INVALID_OPERATION異常

這裏是我的着色器：

protected final String mFragmentShader = 
       "#extension GL_OES_EGL_image_external : require\n" + 
         "uniform samplerExternalOES sTexture;\n" + 
         "varying vec2 vTextureCoord;\n" + 
         "vec4 color;\n" + 
         "\n" + 
         "void main(){\n" + 
         " color = texture2D(sTexture, vTextureCoord);\n" + 
         " if(color.r < 0.1 && color.g < 0.1 && color.b < 0.1){\n" + 
         "  gl_FragColor = vec4(0.0,0.0,0.0,0.0);\n" + 
         " } else{\n" + 
         "  gl_FragColor = color;\n" + 
         " }\n" + 
         "}";

當我下次使用着色器 - 一切都被表現很好（當然除了透明度）

protected final String mFragmentShader = 
       "#extension GL_OES_EGL_image_external : require\n" + 
         "precision mediump float;\n" + 
         "varying vec2 vTextureCoord;\n" + 
         "uniform samplerExternalOES sTexture;\n" + 
         "void main() {\n" + 
         " gl_FragColor = texture2D(sTexture, vTextureCoord);\n" + 
         "}\n";

這裏是我的onDrawFrame代碼：

public void onDrawFrame(GL10 glUnused) { 
      if(!mMediaPlayer.isPlaying()) 
       return; 
      synchronized (this) { 
       if (updateSurface) { 
        mSurface.updateTexImage(); 
        mSurface.getTransformMatrix(mSTMatrix); 
        updateSurface = false; 
       } 
      } 

      GLES20.glClearColor(0.0f, 1.0f, 0.0f, 1.0f); 
      GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT); 

      GLES20.glUseProgram(mProgram); 
      checkGlError("glUseProgram"); 

      GLES20.glActiveTexture(GLES20.GL_TEXTURE0); 
      GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureID); 

      mTriangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET); 
      GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, 
        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices); 
      checkGlError("glVertexAttribPointer maPosition"); 
      GLES20.glEnableVertexAttribArray(maPositionHandle); 
      checkGlError("glEnableVertexAttribArray maPositionHandle"); 

      mTriangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET); 
      GLES20.glVertexAttribPointer(maTextureHandle, 3, GLES20.GL_FLOAT, false, 
        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices); 
      checkGlError("glVertexAttribPointer maTextureHandle"); 
      GLES20.glEnableVertexAttribArray(maTextureHandle); 
      checkGlError("glEnableVertexAttribArray maTextureHandle"); 

      Matrix.setIdentityM(mMVPMatrix, 0); 
      GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0); 
      GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0); 

      GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4); 
      checkGlError("glDrawArrays"); 
      GLES20.glFinish(); 

     }

可能是什麼問題？

來源

2013-10-09 earsonheart

不是OpenGL ES有'glGetShaderInfoLog'嗎？你有沒有檢查着色器信息日誌是否包含有用的東西？ – Michael

它不應該是mTriangleVerticesData和mTriangleTextureData嗎？ –