/**
* Draw the floor.
*
* <p>This feeds in data for the floor into the shader. Note that this doesn't feed in data about
* position of the light, so if we rewrite our code to draw the floor first, the lighting might
* look strange.
*/
public void drawFloor(
float[] modelViewProjection,
float[] modelFloor,
float[] modelView,
float[] lightPosInEyeSpace) {
GLES30.glUseProgram(mProgramObject);
floorModelParam = GLES30.glGetUniformLocation(mProgramObject, "u_Model");
floorModelViewParam = GLES30.glGetUniformLocation(mProgramObject, "u_MVMatrix");
floorModelViewProjectionParam = GLES30.glGetUniformLocation(mProgramObject, "u_MVP");
floorLightPosParam = GLES30.glGetUniformLocation(mProgramObject, "u_LightPos");
floorPositionParam = GLES30.glGetAttribLocation(mProgramObject, "a_Position");
floorNormalParam = GLES30.glGetAttribLocation(mProgramObject, "a_Normal");
floorColorParam = GLES30.glGetAttribLocation(mProgramObject, "a_Color");
GLES30.glEnableVertexAttribArray(floorPositionParam);
GLES30.glEnableVertexAttribArray(floorNormalParam);
GLES30.glEnableVertexAttribArray(floorColorParam);
// Set ModelView, MVP, position, normals, and color.
GLES30.glUniform3fv(floorLightPosParam, 1, lightPosInEyeSpace, 0);
GLES30.glUniformMatrix4fv(floorModelParam, 1, false, modelFloor, 0);
GLES30.glUniformMatrix4fv(floorModelViewParam, 1, false, modelView, 0);
GLES30.glUniformMatrix4fv(floorModelViewProjectionParam, 1, false, modelViewProjection, 0);
GLES30.glVertexAttribPointer(
floorPositionParam, COORDS_PER_VERTEX, GLES30.GL_FLOAT, false, 0, floorVertices);
GLES30.glVertexAttribPointer(floorNormalParam, 3, GLES30.GL_FLOAT, false, 0, floorNormals);
GLES30.glVertexAttribPointer(floorColorParam, 4, GLES30.GL_FLOAT, false, 0, floorColors);
GLES30.glDrawArrays(GLES30.GL_TRIANGLES, 0, 6);
}
private void flush() {
DrawEnv d = mDraw;
mVertBuf.flip();
GLES30.glBufferSubData(GL_ARRAY_BUFFER, 0, mVertBuf.remaining(), mVertBuf);
mVertBuf.clear();
if (mActiveIndexer == null) {
GLES30.glDrawArrays(mActiveMode, 0, mActivePos);
} else {
mIndBuf.flip();
GLES30.glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, mIndBuf.remaining(), mIndBuf);
GLES30.glDrawElements(mActiveMode, mActiveIndexer.count(), GL_UNSIGNED_INT, 0);
mIndBuf.clear();
}
mActivePos = 0;
}