Launcher 滑屏特效 3d水晶空翻 之多重纹理贴图

项目源码：https://github.com/xufeifandj/CubeEffectTest

CubeEffectTest 运用opengl es 2.0 shder着色器 多重纹理贴图的例子，优化cube立方体

package xu.ferris.cubeeffecttest;

import android.opengl.GLES11Ext;
import android.opengl.GLES20;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import  static xu.ferris.cubeeffecttest.Constant.UNIT_SIZE;
import  static xu.ferris.cubeeffecttest.Constant.UNIT_SIZE_ZERO;
import  static xu.ferris.cubeeffecttest.Constant.UNIT_SIZE_TAB;
//颜色矩形
public class PageRect {
int mProgram;//自定义渲染管线着色器程序id
int muMVPMatrixHandle;//总变换矩阵引用
int muMMatrixHandle;//位置、旋转变换矩阵引用
int maPositionHandle; //顶点位置属性引用

private int mTextureUniformHandle;
private int mTextureUniformLightHandle;
private int mTextureCoordinateHandle;

String mVertexShader;//顶点着色器代码脚本
String mFragmentShader;//片元着色器代码脚本

FloatBuffer mVertexBuffer;//顶点坐标数据缓冲

FloatBuffer mCubeTextureCoordinates;//顶点着色数据缓冲
int vCount = 0;

int muRHandle;
int muAlpha;

public PageRect(MySurfaceView mv) {
//初始化顶点坐标与着色数据
initVertexData();
//初始化shader
initShader(mv);

initTexture(mv);
}
private int textures[]=new int[2];
private void initTexture(MySurfaceView mv) {
textures[0]=TextureHelper.loadTexture(mv.getContext(),R.drawable.gl_crystal_font);

textures[1]=TextureHelper.loadTexture(mv.getContext(),R.drawable.gl_crystal_font);
}

//初始化顶点坐标与着色数据的方法
public void initVertexData() {
//顶点坐标数据的初始化================begin============================
vCount = 4*6;
float vertices[] = new float[]
{

// Front face
-UNIT_SIZE, UNIT_SIZE, UNIT_SIZE_TAB,
-UNIT_SIZE, -UNIT_SIZE, UNIT_SIZE_TAB,
UNIT_SIZE, UNIT_SIZE, UNIT_SIZE_TAB,
UNIT_SIZE, -UNIT_SIZE, UNIT_SIZE_TAB,

// Right face
UNIT_SIZE, UNIT_SIZE, UNIT_SIZE_TAB,
UNIT_SIZE, -UNIT_SIZE, UNIT_SIZE_TAB,
UNIT_SIZE, UNIT_SIZE, -UNIT_SIZE_TAB,
UNIT_SIZE, -UNIT_SIZE, -UNIT_SIZE_TAB,

// Back face
UNIT_SIZE, UNIT_SIZE, -UNIT_SIZE_TAB,
UNIT_SIZE, -UNIT_SIZE, -UNIT_SIZE_TAB,
-UNIT_SIZE, UNIT_SIZE, -UNIT_SIZE_TAB,
-UNIT_SIZE, -UNIT_SIZE, -UNIT_SIZE_TAB,

// Left face
-UNIT_SIZE, UNIT_SIZE, -UNIT_SIZE_TAB,
-UNIT_SIZE, -UNIT_SIZE, -UNIT_SIZE_TAB,
-UNIT_SIZE, UNIT_SIZE, UNIT_SIZE_TAB,
-UNIT_SIZE, -UNIT_SIZE, UNIT_SIZE_TAB,

// Top face
-UNIT_SIZE, UNIT_SIZE, -UNIT_SIZE_TAB,
-UNIT_SIZE, UNIT_SIZE, UNIT_SIZE_TAB,
UNIT_SIZE, UNIT_SIZE, -UNIT_SIZE_TAB,
UNIT_SIZE, UNIT_SIZE, UNIT_SIZE_TAB,

// Bottom face
UNIT_SIZE, -UNIT_SIZE, -UNIT_SIZE_TAB,
UNIT_SIZE, -UNIT_SIZE, UNIT_SIZE_TAB,
-UNIT_SIZE, -UNIT_SIZE, -UNIT_SIZE_TAB,
-UNIT_SIZE, -UNIT_SIZE, UNIT_SIZE_TAB,
};

ByteBuffer vbb = ByteBuffer.allocateDirect(vertices.length * 4);
vbb.order(ByteOrder.nativeOrder());//设置字节顺序
mVertexBuffer = vbb.asFloatBuffer();//转换为Float型缓冲
mVertexBuffer.put(vertices);//向缓冲区中放入顶点坐标数据
mVertexBuffer.position(0);//设置缓冲区起始位置

float[] cubeTextureCoordinateData =
{
UNIT_SIZE_ZERO, UNIT_SIZE_ZERO,
UNIT_SIZE_ZERO, UNIT_SIZE,
UNIT_SIZE, UNIT_SIZE_ZERO,
UNIT_SIZE, UNIT_SIZE,

UNIT_SIZE_ZERO, UNIT_SIZE_ZERO,
UNIT_SIZE_ZERO, UNIT_SIZE,
UNIT_SIZE, UNIT_SIZE_ZERO,
UNIT_SIZE, UNIT_SIZE,

UNIT_SIZE_ZERO, UNIT_SIZE_ZERO,
UNIT_SIZE_ZERO, UNIT_SIZE,
UNIT_SIZE, UNIT_SIZE_ZERO,
UNIT_SIZE, UNIT_SIZE,

UNIT_SIZE_ZERO, UNIT_SIZE_ZERO,
UNIT_SIZE_ZERO, UNIT_SIZE,
UNIT_SIZE, UNIT_SIZE_ZERO,
UNIT_SIZE, UNIT_SIZE,

UNIT_SIZE_ZERO, UNIT_SIZE_ZERO,
UNIT_SIZE_ZERO, UNIT_SIZE,
UNIT_SIZE, UNIT_SIZE_ZERO,
UNIT_SIZE, UNIT_SIZE,

UNIT_SIZE_ZERO, UNIT_SIZE_ZERO,
UNIT_SIZE_ZERO, UNIT_SIZE,
UNIT_SIZE, UNIT_SIZE_ZERO,
UNIT_SIZE, UNIT_SIZE

};

ByteBuffer vtt = ByteBuffer.allocateDirect(cubeTextureCoordinateData.length * 4);
vtt.order(ByteOrder.nativeOrder());//设置字节顺序
mCubeTextureCoordinates = vtt.asFloatBuffer();//转换为Float型缓冲
mCubeTextureCoordinates.put(cubeTextureCoordinateData);//向缓冲区中放入顶点着色数据
mCubeTextureCoordinates.position(0);//设置缓冲区起始位置
}

//初始化shader
public void initShader(MySurfaceView mv) {
//加载顶点着色器的脚本内容
mVertexShader = ShaderUtil.loadFromAssetsFile("vertex.sh", mv.getResources());
//加载片元着色器的脚本内容
mFragmentShader = ShaderUtil.loadFromAssetsFile("frag.sh", mv.getResources());
//基于顶点着色器与片元着色器创建程序
mProgram = ShaderUtil.createProgram(mVertexShader, mFragmentShader);
//获取程序中顶点位置属性引用id
maPositionHandle = GLES20.glGetAttribLocation(mProgram, "aPosition");
//获取程序中总变换矩阵引用id
muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
//获取位置、旋转变换矩阵引用id
muMMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMMatrix");

mTextureUniformHandle = GLES20.glGetUniformLocation(mProgram, "u_Texture");
mTextureUniformLightHandle = GLES20.glGetUniformLocation(mProgram, "u_TextureLight");

mTextureCoordinateHandle = GLES20.glGetAttribLocation(mProgram, "a_TexCoordinate");

muRHandle = GLES20.glGetUniformLocation(mProgram, "isNormal");

muAlpha= GLES20.glGetUniformLocation(mProgram, "uAlpha");
}

/**
* 绘制offset 0状态
* @param mGlSurfaceTextureId
*/
public void drawSelfNoval(int mGlSurfaceTextureId) {
//制定使用某套shader程序
GLES20.glUseProgram(mProgram);
//将最终变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
//将位置、旋转变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMMatrixHandle, 1, false, MatrixState.getMMatrix(), 0);

mVertexBuffer.position(0);
//为画笔指定顶点位置数据
GLES20.glVertexAttribPointer( maPositionHandle,3,GLES20.GL_FLOAT,false,
3 * 4,mVertexBuffer);

mCubeTextureCoordinates.position(0);
//绑定纹理位置
GLES20.glVertexAttribPointer(mTextureCoordinateHandle, 2, GLES20.GL_FLOAT, false,
2*4, mCubeTextureCoordinates);

//允许顶点位置数据数组
GLES20.glEnableVertexAttribArray(maPositionHandle);
GLES20.glEnableVertexAttribArray(mTextureCoordinateHandle);

GLES20.glUniform1i(muRHandle, 0);

GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES,  mGlSurfaceTextureId);
GLES20.glUniform1i(mTextureUniformHandle, 0);
//绘制三角形
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
}

//绘制offset 非0状态
public void drawSelf(int mGlSurfaceTextureId) {
//制定使用某套shader程序
GLES20.glUseProgram(mProgram);
//将最终变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, MatrixState.getFinalMatrix(), 0);
//将位置、旋转变换矩阵传入shader程序
GLES20.glUniformMatrix4fv(muMMatrixHandle, 1, false, MatrixState.getMMatrix(), 0);

mVertexBuffer.position(0);
//为画笔指定顶点位置数据
GLES20.glVertexAttribPointer( maPositionHandle,3,GLES20.GL_FLOAT,false,
3 * 4,mVertexBuffer);

mCubeTextureCoordinates.position(0);
//绑定纹理位置
GLES20.glVertexAttribPointer(mTextureCoordinateHandle, 2, GLES20.GL_FLOAT, false,
2*4, mCubeTextureCoordinates);

//允许顶点位置数据数组
GLES20.glEnableVertexAttribArray(maPositionHandle);
GLES20.glEnableVertexAttribArray(mTextureCoordinateHandle);

//绘制前页
GLES20.glUniform1i(muRHandle, 1);
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES,  mGlSurfaceTextureId);
GLES20.glUniform1i(mTextureUniformHandle, 0);
GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[0]);
GLES20.glUniform1i(mTextureUniformLightHandle, 1);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

//绘制右页面 tab
GLES20.glUniform1i(muRHandle, 2);
GLES20.glActiveTexture(GLES20.GL_TEXTURE2);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[1]);
GLES20.glUniform1i(mTextureUniformLightHandle, 2);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 4, 4);

//绘制背面
GLES20.glUniform1i(muRHandle, 2);
GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[0]);
GLES20.glUniform1i(mTextureUniformLightHandle, 1);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 8, 4);

//绘制左边
GLES20.glUniform1i(muRHandle, 2);
GLES20.glActiveTexture(GLES20.GL_TEXTURE2);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[1]);
GLES20.glUniform1i(mTextureUniformLightHandle, 2);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 12, 4);

//绘制顶面
GLES20.glUniform1i(muRHandle, 2);
GLES20.glActiveTexture(GLES20.GL_TEXTURE2);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[1]);
GLES20.glUniform1i(mTextureUniformLightHandle, 2);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 16, 4);

//绘制底面
GLES20.glUniform1i(muRHandle, 2);
GLES20.glActiveTexture(GLES20.GL_TEXTURE2);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[1]);
GLES20.glUniform1i(mTextureUniformLightHandle, 2);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 20, 4);

}
}