/**
* 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);
}
public static boolean buildProgram(final GLProgram _program) {
_program.id[0] = GLES30.glCreateProgram();
if (_program.id[0] < 1) {
System.out.println("Failed to create program..");
return false;
}
for (final GLShader shader : _program.shaders) {
// Attach only successfully compiled shaders
if (compileShader(shader) == true) {
GLES30.glAttachShader(_program.id[0], shader.id[0]);
}
}
final List<String> swivel = _program.swivel;
final int size = swivel.size();
for (int i = 0; i < size; i++) {
GLES30.glBindAttribLocation(_program.id[0], _program.inAttributes[i], swivel.get(i));
}
GLES30.glLinkProgram(_program.id[0]);
_program.inMVPMatrix = GLES30.glGetUniformLocation(_program.id[0], "inMVPMatrix");
// Once all of the shaders have been compiled
// and linked, we can then detach the shader sources
// and delete the shaders from memory.
for (final GLShader shader : _program.shaders) {
GLES30.glDetachShader(_program.id[0], shader.id[0]);
GLES30.glDeleteShader(shader.id[0]);
}
_program.shaders.clear();
final int[] response = new int[] {0};
GLES30.glGetProgramiv(_program.id[0], GLES30.GL_LINK_STATUS, response, 0);
if (response[0] == GLES30.GL_FALSE) {
System.out.println("Error linking program: " + GLES30.glGetProgramInfoLog(_program.id[0]));
return false;
}
return true;
}