com.badlogic.gdx.graphics.glutils.FrameBuffer类的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中com.badlogic.gdx.graphics.glutils.FrameBuffer类的一些代码示例，展示了FrameBuffer类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。FrameBuffer类的具体详情如下：
包路径：com.badlogic.gdx.graphics.glutils.FrameBuffer
类名称：FrameBuffer

FrameBuffer介绍

[英]Encapsulates OpenGL ES 2.0 frame buffer objects. This is a simple helper class which should cover most FBO uses. It will automatically create a texture for the color attachment and a renderbuffer for the depth buffer. You can get a hold of the texture by FrameBuffer#getColorBufferTexture(). This class will only work with OpenGL ES 2.0.

FrameBuffers are managed. In case of an OpenGL context loss, which only happens on Android when a user switches to another application or receives an incoming call, the framebuffer will be automatically recreated.

A FrameBuffer must be disposed if it is no longer needed
[中]封装OpenGL ES 2.0帧缓冲区对象。这是一个简单的助手类，应该涵盖大多数FBO使用。它将自动为颜色附件创建纹理，并为深度缓冲区创建渲染缓冲区。您可以通过帧缓冲区#getColorBufferTexture（）获取纹理。此类仅适用于OpenGL ES 2.0。
帧缓冲区被管理。在OpenGL上下文丢失的情况下，只有当用户切换到另一个应用程序或接收到传入呼叫时，才会在Android上发生这种情况，帧缓冲区将自动重新创建。
如果不再需要帧缓冲区，则必须将其释放

代码示例

代码示例来源：origin: libgdx/libgdx

@Override
public void render () {
  frameBuffer.begin();
  Gdx.gl20.glViewport(0, 0, frameBuffer.getWidth(), frameBuffer.getHeight());
  Gdx.gl20.glClearColor(0f, 1f, 0f, 1);
  Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT);
  mesh.render(meshShader, GL20.GL_TRIANGLES);
  meshShader.end();
  frameBuffer.end();
  stencilFrameBuffer.begin();
  Gdx.gl20.glViewport(0, 0, frameBuffer.getWidth(), frameBuffer.getHeight());
  Gdx.gl20.glClearColor(1f, 1f, 0f, 1);
  Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_STENCIL_BUFFER_BIT);
  stencilFrameBuffer.end();
  spriteBatch.draw(frameBuffer.getColorBufferTexture(), 0, 0, 256, 256, 0, 0, frameBuffer.getColorBufferTexture().getWidth(),
    frameBuffer.getColorBufferTexture().getHeight(), false, true);
  spriteBatch.draw(stencilFrameBuffer.getColorBufferTexture(), 256, 256, 256, 256, 0, 0, frameBuffer.getColorBufferTexture()
    .getWidth(), frameBuffer.getColorBufferTexture().getHeight(), false, true);
  spriteBatch.end();

代码示例来源：origin: libgdx/libgdx

@Override
  public FrameBuffer build () {
    return new FrameBuffer(this);
  }
}

代码示例来源：origin: libgdx/libgdx

@Override
  public void dispose () {
    if (fbo != null) fbo.dispose();
    fbo = null;
  }
}

代码示例来源：origin: libgdx/libgdx

public void begin () {
  final int w = fbo.getWidth();
  final int h = fbo.getHeight();
  fbo.begin();
  Gdx.gl.glViewport(0, 0, w, h);
  Gdx.gl.glClearColor(1, 1, 1, 1);
  Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
  Gdx.gl.glEnable(GL20.GL_SCISSOR_TEST);
  Gdx.gl.glScissor(1, 1, w - 2, h - 2);
}

代码示例来源：origin: stackoverflow.com

m_fboRegion = new TextureRegion(m_fbo.getColorBufferTexture());
  m_fboRegion.flip(false, true);
m_fbo.begin();
m_fbo.end();

代码示例来源：origin: libgdx/libgdx

public void render () {
    angle += 45 * Gdx.graphics.getDeltaTime();
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);

    cam.update();
    matrix.setToRotation(0, 1, 0, angle);
    cam.combined.mul(matrix);

    fbo.begin();
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
    Gdx.gl.glEnable(GL20.GL_DEPTH_TEST);
    modelBatch.begin(cam);
    modelBatch.render(sceneInstance);
    modelBatch.end();
    fbo.end();

    batch.begin();
    batch.disableBlending();
    batchShader.setUniformi("u_filterSize", filter.length);
    batchShader.setUniform1fv("u_filter", filter, 0, filter.length);
    batchShader.setUniform2fv("u_offsets", offsets, 0, offsets.length);
    batch.draw(fboRegion, 0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    batch.end();
    logger.log();
  }
}

代码示例来源：origin: manuelbua/libgdx-contribs

@Override
public void render (FrameBuffer src, FrameBuffer dest) {
  restoreViewport(dest);
  if (dest != null) {
    motionFilter.setInput(src).setOutput(dest).render();
    fbo = dest;
  } else {
    if (fbo == null) {
      // Init frame buffer
      fbo = new FrameBuffer(Format.RGBA8888, src.getWidth(), src.getHeight(), false);
    }
    motionFilter.setInput(src).setOutput(fbo).render();
    // Copy fbo to screen
    copyFilter.setInput(fbo).setOutput(dest).render();
  }
  // Set last frame
  motionFilter.setLastFrameTexture(fbo.getColorBufferTexture());
}

代码示例来源：origin: libgdx/libgdx

@Override
public TextureDescriptor getDepthMap () {
  textureDesc.texture = fbo.getColorBufferTexture();
  return textureDesc;
}

代码示例来源：origin: libgdx/libgdx

frameBuffer.begin();
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
frameBuffer.end();
  renderContext.textureBinder.bind(frameBuffer.getTextureAttachments().get(DIFFUSE_ATTACHMENT)));
mrtSceneShader.setUniformi("u_normalTexture",
  renderContext.textureBinder.bind(frameBuffer.getTextureAttachments().get(NORMAL_ATTACHMENT)));
mrtSceneShader.setUniformi("u_positionTexture",
  renderContext.textureBinder.bind(frameBuffer.getTextureAttachments().get(POSITION_ATTACHMENT)));
mrtSceneShader.setUniformi("u_depthTexture", renderContext.textureBinder.bind(frameBuffer.getTextureAttachments().get(DEPTH_ATTACHMENT)));
for (int i = 0; i < lights.size; i++) {
  Light light = lights.get(i);
batch.draw(frameBuffer.getTextureAttachments().get(DIFFUSE_ATTACHMENT), 0, 0, Gdx.graphics.getWidth() / 4f,
  Gdx.graphics.getHeight() / 4f, 0f, 0f, 1f, 1f);
batch.draw(frameBuffer.getTextureAttachments().get(NORMAL_ATTACHMENT), Gdx.graphics.getWidth() / 4f, 0,
  Gdx.graphics.getWidth() / 4f, Gdx.graphics.getHeight() / 4f, 0f, 0f, 1f, 1f);
batch.draw(frameBuffer.getTextureAttachments().get(POSITION_ATTACHMENT), 2 * Gdx.graphics.getWidth() / 4f, 0,
  Gdx.graphics.getWidth() / 4f, Gdx.graphics.getHeight() / 4f, 0f, 0f, 1f, 1f);
batch.draw(frameBuffer.getTextureAttachments().get(DEPTH_ATTACHMENT), 3 * Gdx.graphics.getWidth() / 4f, 0,
  Gdx.graphics.getWidth() / 4f, Gdx.graphics.getHeight() / 4f, 0f, 0f, 1f, 1f);
batch.end();

代码示例来源：origin: libgdx/libgdx

/** End pass n.
 * @param n Pass number */
protected void endPass (int n) {
  frameBuffers[n].end();
}

代码示例来源：origin: langurmonkey/gaiasky

public TextureWidget(FrameBuffer fb) {
  super();
  this.fb = fb;
  this.width = fb.getWidth();
  this.height = fb.getHeight();
}

代码示例来源：origin: LonamiWebs/Klooni1010

@Override
public void resize(int width, int height) {
  this.width = width;
  this.height = height;
  if (frameBuffer != null)
    frameBuffer.dispose();
  frameBuffer = new FrameBuffer(Pixmap.Format.RGB565, width, height, false);
  bufferTexture = new TextureRegion(frameBuffer.getColorBufferTexture());
  bufferTexture.flip(false, true);
}

代码示例来源：origin: libgdx/libgdx

public void create () {
  ShaderProgram.pedantic = false;
  /*
   * shader = new ShaderProgram(Gdx.files.internal("data/shaders/default.vert").readString(), Gdx.files.internal(
   * "data/shaders/depthtocolor.frag").readString()); if (!shader.isCompiled()) { Gdx.app.log("EdgeDetectionTest",
   * "couldn't compile scene shader: " + shader.getLog()); }
   */
  batchShader = new ShaderProgram(Gdx.files.internal("data/shaders/batch.vert").readString(), Gdx.files.internal(
    "data/shaders/convolution.frag").readString());
  if (!batchShader.isCompiled()) {
    Gdx.app.log("EdgeDetectionTest", "couldn't compile post-processing shader: " + batchShader.getLog());
  }
  ObjLoader objLoader = new ObjLoader();
  scene = objLoader.loadModel(Gdx.files.internal("data/scene.obj"));
  sceneInstance = new ModelInstance(scene);
  modelBatch = new ModelBatch();
  fbo = new FrameBuffer(Format.RGB565, Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), true);
  cam = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
  cam.position.set(0, 0, 10);
  cam.lookAt(0, 0, 0);
  cam.far = 30;
  batch = new SpriteBatch();
  batch.setShader(batchShader);
  fboRegion = new TextureRegion(fbo.getColorBufferTexture());
  fboRegion.flip(false, true);
  logger = new FPSLogger();
  calculateOffsets();
}

代码示例来源：origin: libgdx/libgdx

/** Begin pass n.
 * @param n Pass number */
protected void beginPass (int n) {
  frameBuffers[n].begin();
};

代码示例来源：origin: dingjibang/GDX-RPG

public final void render () {
  if (outputBuffer != null) {
    outputBuffer.begin();
    realRender();
    outputBuffer.end();
  } else {
    realRender();
  }
}

代码示例来源：origin: dsaltares/libgdx-cookbook

private void applyBlur(float blur) {		
  // Horizontal blur from FBO A to FBO B
  fboB.begin();
  batch.setShader(shader);
  shader.setUniformf("dir", 1.0f, 0.0f);
  shader.setUniformf("radius", blur);
  Gdx.gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
  Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
  drawTexture(fboA.getColorBufferTexture(),  0.0f, 0.0f);
  batch.flush();
  fboB.end();
  
  // Vertical blur from FBO B to the screen
  shader.setUniformf("dir", 0.0f, 1.0f);
  shader.setUniformf("radius", blur);
  drawTexture(fboB.getColorBufferTexture(), 0.0f, 0.0f);
  batch.flush();
}

代码示例来源：origin: manuelbua/uracer-kotd

@Override
public void render (FrameBuffer src, FrameBuffer dest) {
  restoreViewport(dest);
  if (dest != null) {
    motionFilter.setInput(src).setOutput(dest).render();
    fbo = dest;
  } else {
    if (fbo == null) {
      // Init frame buffer
      fbo = new FrameBuffer(Format.RGBA8888, src.getWidth(), src.getHeight(), false);
    }
    motionFilter.setInput(src).setOutput(fbo).render();
    // Copy fbo to screen
    copyFilter.setInput(fbo).setOutput(dest).render();
  }
  // Set last frame
  motionFilter.setLastFrameTexture(fbo.getColorBufferTexture());
}

代码示例来源：origin: libgdx/libgdx

public void begin () {
  final int w = fbo.getWidth();
  final int h = fbo.getHeight();
  fbo.begin();
  Gdx.gl.glViewport(0, 0, w, h);
  Gdx.gl.glClearColor(1, 1, 1, 1);
  Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);
  Gdx.gl.glEnable(GL20.GL_SCISSOR_TEST);
  Gdx.gl.glScissor(1, 1, w - 2, h - 2);
}

代码示例来源：origin: libgdx/libgdx

@Override
public TextureDescriptor getDepthMap () {
  textureDesc.texture = fbo.getColorBufferTexture();
  return textureDesc;
}

代码示例来源：origin: libgdx/libgdx

public void end () {
  Gdx.gl.glDisable(GL20.GL_SCISSOR_TEST);
  fbo.end();
}

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