protected String getFragmentShader() {
return RawResourceReader.readTextFileFromRawResource(mContext, R.raw.per_pixel_fragment_shader);
}
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
super.onSurfaceCreated(gl, config);
// Set the background clear color to black.
GLES20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// Use culling to remove back faces.
GLES20.glEnable(GLES20.GL_CULL_FACE);
// Enable depth testing
GLES20.glEnable(GLES20.GL_DEPTH_TEST);
// The below glEnable() call is a holdover from OpenGL ES 1, and is not needed in OpenGL ES 2.
// Enable texture mapping
// GLES20.glEnable(GLES20.GL_TEXTURE_2D);
// Position the eye in front of the origin.
final float eyeX = 0.0f;
final float eyeY = 0.0f;
final float eyeZ = -0.5f;
// We are looking toward the distance
final float lookX = 0.0f;
final float lookY = 0.0f;
final float lookZ = -5.0f;
// Set our up vector. This is where our head would be pointing were we holding the camera.
final float upX = 0.0f;
final float upY = 1.0f;
final float upZ = 0.0f;
// Set the view matrix. This matrix can be said to represent the camera position.
// NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination of a model and
// view matrix. In OpenGL 2, we can keep track of these matrices separately if we choose.
Matrix.setLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
final String vertexShader = getVertexShader();
final String fragmentShader = getFragmentShader();
final int vertexShaderHandle =
ShaderHelper.compileShader(GLES20.GL_VERTEX_SHADER, vertexShader);
final int fragmentShaderHandle =
ShaderHelper.compileShader(GLES20.GL_FRAGMENT_SHADER, fragmentShader);
mProgramHandle =
ShaderHelper.createAndLinkProgram(
vertexShaderHandle,
fragmentShaderHandle,
new String[] {"a_Position", "a_Color", "a_Normal", "a_TexCoordinate"});
// Define a simple shader program for our point.
final String pointVertexShader =
RawResourceReader.readTextFileFromRawResource(mContext, R.raw.point_vertex_shader);
final String pointFragmentShader =
RawResourceReader.readTextFileFromRawResource(mContext, R.raw.point_fragment_shader);
final int pointVertexShaderHandle =
ShaderHelper.compileShader(GLES20.GL_VERTEX_SHADER, pointVertexShader);
final int pointFragmentShaderHandle =
ShaderHelper.compileShader(GLES20.GL_FRAGMENT_SHADER, pointFragmentShader);
mPointProgramHandle =
ShaderHelper.createAndLinkProgram(
pointVertexShaderHandle, pointFragmentShaderHandle, new String[] {"a_Position"});
}
protected String getVertexShader() {
return RawResourceReader.readTextFileFromRawResource(mContext, R.raw.per_pixel_vertex_shader);
}
