/*******************************************************************************
* This file is part of RedReader.
*
* RedReader is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* RedReader is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with RedReader. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package org.quantumbadger.redreader.views.glview.program;
import android.opengl.GLES20;
import java.nio.FloatBuffer;
public abstract class RRGLProgramVertices extends RRGLProgram {
private int mVertexBufferHandle;
private int mMatrixUniformHandle;
private int mPixelMatrixUniformHandle;
public RRGLProgramVertices(String vertexShaderSource, String fragmentShaderSource) {
super(vertexShaderSource, fragmentShaderSource);
}
public final void activateVertexBuffer(final FloatBuffer vertexBuffer) {
GLES20.glVertexAttribPointer(mVertexBufferHandle, 3, GLES20.GL_FLOAT, false, 0, vertexBuffer);
}
public final void drawTriangleStrip(int vertices) {
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, vertices);
}
protected final void setVertexBufferHandle(int handle) {
mVertexBufferHandle = handle;
}
protected final void setMatrixUniformHandle(int handle) {
mMatrixUniformHandle = handle;
}
protected final void setPixelMatrixHandle(int handle) {
mPixelMatrixUniformHandle = handle;
}
public final void activateMatrix(float[] buf, int offset) {
GLES20.glUniformMatrix4fv(mMatrixUniformHandle, 1, false, buf, offset);
}
public final void activatePixelMatrix(float[] buf, int offset) {
GLES20.glUniformMatrix4fv(mPixelMatrixUniformHandle, 1, false, buf, offset);
}
@Override
public void onActivated() {
GLES20.glEnableVertexAttribArray(mVertexBufferHandle);
}
@Override
public void onDeactivated() {
GLES20.glDisableVertexAttribArray(mVertexBufferHandle);
}
}