174 lines
5.4 KiB
Java
174 lines
5.4 KiB
Java
/*
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* Copyright (C) 2021 pedroSG94.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.pedro.encoder.input.gl.render.filters;
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import android.content.Context;
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import android.opengl.GLES20;
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import android.opengl.Matrix;
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import android.os.Build;
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import androidx.annotation.RequiresApi;
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import com.pedro.encoder.R;
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import com.pedro.encoder.utils.gl.GlUtil;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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/**
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* Created by pedro on 4/02/18.
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*/
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@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
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public class HalftoneLinesFilterRender extends BaseFilterRender {
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//rotation matrix
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private final float[] squareVertexDataFilter = {
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// X, Y, Z, U, V
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-1f, -1f, 0f, 0f, 0f, //bottom left
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1f, -1f, 0f, 1f, 0f, //bottom right
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-1f, 1f, 0f, 0f, 1f, //top left
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1f, 1f, 0f, 1f, 1f, //top right
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};
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private int program = -1;
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private int aPositionHandle = -1;
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private int aTextureHandle = -1;
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private int uMVPMatrixHandle = -1;
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private int uSTMatrixHandle = -1;
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private int uSamplerHandle = -1;
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private int uResolutionHandle = -1;
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private int uModeHandle = -1;
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private int uRowsHandle = -1;
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private int uRotationHandle = -1;
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private int uAntialiasHandle = -1;
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private int uSampleDistHandle = -1;
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private float mode = 1f;
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private float rows = 40f;
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private float rotation = 0f;
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private float antialias = 0.2f;
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private float[] sampleDist = new float[] { 2f, 2f };
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public HalftoneLinesFilterRender() {
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squareVertex = ByteBuffer.allocateDirect(squareVertexDataFilter.length * FLOAT_SIZE_BYTES)
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.order(ByteOrder.nativeOrder())
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.asFloatBuffer();
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squareVertex.put(squareVertexDataFilter).position(0);
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Matrix.setIdentityM(MVPMatrix, 0);
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Matrix.setIdentityM(STMatrix, 0);
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}
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@Override
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protected void initGlFilter(Context context) {
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String vertexShader = GlUtil.getStringFromRaw(context, R.raw.simple_vertex);
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String fragmentShader = GlUtil.getStringFromRaw(context, R.raw.halftone_lines_fragment);
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program = GlUtil.createProgram(vertexShader, fragmentShader);
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aPositionHandle = GLES20.glGetAttribLocation(program, "aPosition");
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aTextureHandle = GLES20.glGetAttribLocation(program, "aTextureCoord");
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uMVPMatrixHandle = GLES20.glGetUniformLocation(program, "uMVPMatrix");
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uSTMatrixHandle = GLES20.glGetUniformLocation(program, "uSTMatrix");
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uSamplerHandle = GLES20.glGetUniformLocation(program, "uSampler");
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uResolutionHandle = GLES20.glGetUniformLocation(program, "uResolution");
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uModeHandle = GLES20.glGetUniformLocation(program, "uMode");
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uRowsHandle = GLES20.glGetUniformLocation(program, "uRows");
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uRotationHandle = GLES20.glGetUniformLocation(program, "uRotation");
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uAntialiasHandle = GLES20.glGetUniformLocation(program, "uAntialias");
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uSampleDistHandle = GLES20.glGetUniformLocation(program, "uSampleDist");
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}
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@Override
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protected void drawFilter() {
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GLES20.glUseProgram(program);
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squareVertex.position(SQUARE_VERTEX_DATA_POS_OFFSET);
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GLES20.glVertexAttribPointer(aPositionHandle, 3, GLES20.GL_FLOAT, false,
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SQUARE_VERTEX_DATA_STRIDE_BYTES, squareVertex);
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GLES20.glEnableVertexAttribArray(aPositionHandle);
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squareVertex.position(SQUARE_VERTEX_DATA_UV_OFFSET);
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GLES20.glVertexAttribPointer(aTextureHandle, 2, GLES20.GL_FLOAT, false,
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SQUARE_VERTEX_DATA_STRIDE_BYTES, squareVertex);
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GLES20.glEnableVertexAttribArray(aTextureHandle);
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GLES20.glUniformMatrix4fv(uMVPMatrixHandle, 1, false, MVPMatrix, 0);
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GLES20.glUniformMatrix4fv(uSTMatrixHandle, 1, false, STMatrix, 0);
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GLES20.glUniform2f(uResolutionHandle, getWidth(), getHeight());
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GLES20.glUniform1f(uModeHandle, mode);
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GLES20.glUniform1f(uRowsHandle, rows);
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GLES20.glUniform1f(uRotationHandle, rotation);
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GLES20.glUniform1f(uAntialiasHandle, antialias);
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GLES20.glUniform2f(uSampleDistHandle, sampleDist[0], sampleDist[1]);
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GLES20.glUniform1i(uSamplerHandle, 4);
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GLES20.glActiveTexture(GLES20.GL_TEXTURE4);
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, previousTexId);
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}
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@Override
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public void release() {
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GLES20.glDeleteProgram(program);
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}
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public float getMode() {
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return mode;
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}
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public float getRows() {
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return rows;
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}
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public float getRotation() {
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return rotation;
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}
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public float getAntialias() {
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return antialias;
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}
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public float[] getSampleDist() {
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return sampleDist;
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}
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/**
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* @param mode 1 to 7 values
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*/
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public void setMode(int mode) {
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if (mode < 1) {
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this.mode = 1;
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} else if (mode > 7) {
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this.mode = 7;
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} else {
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this.mode = mode;
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}
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}
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public void setRows(float rows) {
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this.rows = rows;
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}
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public void setRotation(float rotation) {
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this.rotation = rotation;
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}
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public void setAntialias(float antialias) {
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this.antialias = antialias;
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}
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public void setSampleDist(float[] sampleDist) {
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this.sampleDist = sampleDist;
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}
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}
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