Question

我正在尝试开发一个只是一个简单的灰度着色器的着色器。游戏正在运行，但着色器没有任何效果，使用0.5 Alpha渲染之前的任何纹理现在看起来都像是用完整的alpha渲染。

Grayscale.vert

#ifdef GL_ES
precision mediump float;
precision mediump int;
#else
#define highp;
#endif

uniform sampler2D u_texture;

varying vec4 v_color;
varying vec2 v_texCoord;

const vec3 grayScaleMultiplier = vec3(0.299,0.587,0.114);

void main(){
    vec4 texColor = texture2D(u_texture,v_texCoord);
    vec3 gray = vec3(dot(texColor.rgb,grayScaleMultiplier));
    gl_FragColor = vec4(gray.r,gray.g,gray.b,texColor.a);
}

Grayscale.frag

shaderProgram = new ShaderProgram(Gdx.files.internal("shaders/grayscale.vert"),Gdx.files.internal("shaders/grayscale.frag"));
        testBatch.setShader(shaderProgram);

        if(!shaderProgram.isCompiled()) {
            System.out.println(shaderProgram.getLog());
        }

如何应用着色器

    Gdx.gl20.glClearColor(1,1,1,255);
    Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT);
    mapLayerManager.render();

   batch.begin();

  for(AbstractEnemy enemy : allEnemys){
        enemy.render(batch);
  }
  batch.end();

  lightManager.render(batch);

  shapeRenderer.begin();
  shapeRenderer.setColor(0,0,0,100);
  shapeRenderer.set(ShapeRenderer.ShapeType.Filled);
  for(AbstractEnemy enemy : allEnemys){
      enemy.render(shapeRenderer);
  }
  shapeRenderer.set(ShapeRenderer.ShapeType.Line);
  shapeRenderer.setColor(0,0,0,255);
  shapeRenderer.end();

  batch.begin();
  player.render(batch);
  batch.end();

   world.step(1/45f,6,2);

我的渲染调用

var myApp = angular.module('myApp', []);

myApp.controller('MainCtrl', ['$scope', function ($scope) {
    console.log("in here");
    var jsonData = require('../test_data.json'); 

    console.log(jsonData);
}]);

我没有得到任何编译错误，我不知道出了什么问题。

GrayScale Shader无法正常工作并删除alpha渲染

0 个答案: