Java GLES20.glClearColor方法代碼示例

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void onDrawFrame(GL10 unused) {
    angle = ((float) SystemClock.elapsedRealtime() - startTime) * 0.02f;
    GLES20.glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);

    if (scene != null) {
        Matrix.setLookAtM(mViewMatrix, 0,
                0, 0, -4,
                0f, 0f, 0f,
                0f, 1.0f, 0.0f);

        Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
        Matrix.rotateM(mMVPMatrix, 0, angle, 0.8f, 2.f, 1.f);

        GLES20.glUseProgram(shaderProgram);

        int mMVPMatrixHandle = GLES20.glGetUniformLocation(shaderProgram, "uMVPMatrix");
        GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);

        scene.render(shaderProgram, "vPosition", "aColor");
    }
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    mScreenWidth = mContext.getResources().getDisplayMetrics().widthPixels;
    mScreenHeight = mContext.getResources().getDisplayMetrics().heightPixels;

    // Set the clear color to black. TODO: Remove this later once there's an actual background
    GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1);

    // Object shaders
    int vertexShader = ShaderInfo.loadShader(GLES20.GL_VERTEX_SHADER, ShaderInfo.vs_Image);
    int fragmentShader = ShaderInfo.loadShader(GLES20.GL_FRAGMENT_SHADER, ShaderInfo.fs_Image);

    ShaderInfo.sp_Image = GLES20.glCreateProgram();             // create empty OpenGL ES Program
    GLES20.glAttachShader(ShaderInfo.sp_Image, vertexShader);   // add the vertex shader to program
    GLES20.glAttachShader(ShaderInfo.sp_Image, fragmentShader); // add the fragment shader to program
    GLES20.glLinkProgram(ShaderInfo.sp_Image);                  // creates OpenGL ES program executables

    // Set our shader program
    GLES20.glUseProgram(ShaderInfo.sp_Image);

    // Enable blending
    GLES20.glEnable(GLES20.GL_BLEND);
    GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
private void initShaders() {
    String strGLVersion = GLES20.glGetString(GLES20.GL_VERSION);
    if (strGLVersion != null)
        Log.i(LOGTAG, "OpenGL ES version: " + strGLVersion);

    GLES20.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);

    progOES = loadShader(vss, fssOES);
    vPosOES = GLES20.glGetAttribLocation(progOES, "vPosition");
    vTCOES  = GLES20.glGetAttribLocation(progOES, "vTexCoord");
    GLES20.glEnableVertexAttribArray(vPosOES);
    GLES20.glEnableVertexAttribArray(vTCOES);

    prog2D  = loadShader(vss, fss2D);
    vPos2D = GLES20.glGetAttribLocation(prog2D, "vPosition");
    vTC2D  = GLES20.glGetAttribLocation(prog2D, "vTexCoord");
    GLES20.glEnableVertexAttribArray(vPos2D);
    GLES20.glEnableVertexAttribArray(vTC2D);
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@SuppressLint("WrongCall")
@Override
public void onDraw(final int textureId, final FloatBuffer cubeBuffer, final FloatBuffer textureBuffer) {
    runPendingOnDrawTasks();
    if (!isInitialized() || mFrameBuffers == null || mFrameBufferTextures == null) {
        return;
    }
    if (mMergedFilters != null) {
        int size = mMergedFilters.size();
        int previousTexture = textureId;
        for (int i = 0; i < size; i++) {
            CameraFilter filter = mMergedFilters.get(i);
            boolean isNotLast = i < size - 1;
            if (isNotLast) {
                GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, mFrameBuffers[i]);
                GLES20.glClearColor(0, 0, 0, 0);
            }

            if (i == 0) {
                filter.onDraw(previousTexture, cubeBuffer, textureBuffer);
            } else if (i == size - 1) {
                filter.onDraw(previousTexture, mGLCubeBuffer, (size % 2 == 0) ? mGLTextureFlipBuffer : mGLTextureBuffer);
            } else {
                filter.onDraw(previousTexture, mGLCubeBuffer, mGLTextureBuffer);
            }

            if (isNotLast) {
                GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
                previousTexture = mFrameBufferTextures[i];
            }
        }
    }
 }
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
	GLES20.glDisable(GL10.GL_DITHER);
       GLES20.glClearColor(0,0,0,0);
       GLES20.glEnable(GL10.GL_CULL_FACE);
       GLES20.glEnable(GL10.GL_DEPTH_TEST);
       MagicFilterParam.initMagicFilterParam(gl);
       mCameraInputFilter.init();
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
/**
 * The method is called when the surface is first created.
 * It will also be called if we lose our surface context and
 * it is later recreated by the system.
 */
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    // Set the background clear color to gray.
    GLES20.glClearColor(0.5F, 0.5F, 0.5F, 0.5F);
    mTriangle1 = new Triangle(Triangle.Triangle1VerticesData);
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void run() {
    if (!initialized || shuttingDown) {
        return;
    }

    setCurrentContext();

    GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
    GLES20.glViewport(0, 0, bufferWidth, bufferHeight);

    GLES20.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);

    painting.render();

    GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);

    egl10.eglSwapBuffers(eglDisplay, eglSurface);

    if (!ready) {
        queue.postRunnable(new Runnable() {
            @Override
            public void run() {
                ready = true;
            }
        }, 200);
    }
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {

    // Set the background clear color to black.
    GLES20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

    // Use culling to remove back face.
    GLES20.glEnable(GLES20.GL_CULL_FACE);

    // Enable depth testing
    GLES20.glEnable(GLES20.GL_DEPTH_TEST);

    mCube = new Cube();
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override public void onDraw(float[] mvpMatrix, FloatBuffer vertexBuffer, int firstVertex,
        int vertexCount, int coordsPerVertex, int vertexStride, float[] texMatrix,
        FloatBuffer texBuffer, int textureId, int texStride) {

    // TODO
    int size = mFilters.size();
    int previousTextureId = textureId;
    for (int i = 0; i < size; i++) {
        T filter = mFilters.get(i);
        boolean isNotLast = i < size - 1;

        if (isNotLast) {
            GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, mFrameBuffers[i]);
            GLES20.glClearColor(0, 0, 0, 0);
        }

        if (i == 0) {
            filter.onDraw(mvpMatrix, vertexBuffer, firstVertex, vertexCount, coordsPerVertex,
                    vertexStride, texMatrix, texBuffer, previousTextureId, texStride);
        } else if (i == size - 1) {
            filter.onDraw(mvpMatrix, mDrawable2d.getVertexArray(), firstVertex, vertexCount,
                    coordsPerVertex, vertexStride, texMatrix,
                    (size % 2 == 0) ? mDrawableFlipVertical2d.getTexCoordArray()
                            : mDrawable2d.getTexCoordArray(), previousTextureId, texStride);
        } else {
            filter.onDraw(mvpMatrix, mDrawable2d.getVertexArray(), firstVertex, vertexCount,
                    coordsPerVertex, vertexStride, texMatrix, mDrawable2d.getTexCoordArray(),
                    previousTextureId, texStride);
        }

        if (isNotLast) {
            GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
            previousTextureId = mFrameBufferTextures[i];
        }
    }
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void onDrawFrame(GL10 unused) {
    scroller.computeScrollOffset();
    if (scroller.isFinished()) {
        int lastX = scroller.getCurrX();
        int modulo = lastX % 90;
        int snapX = (lastX / 90) * 90;
        if (modulo >= 45) snapX += 90;
        if (modulo <- 45) snapX -= 90;

        if (lastX != snapX) {
            scroller.startScroll(lastX, 0, snapX - lastX, 0);
        }
    }

    GLES20.glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);

    Matrix.setLookAtM(mViewMatrix, 0,
            0, 0, -3,
            0f, 0f, 0f,
            0f, 1.0f, 0.0f);


    Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
    Matrix.rotateM(mMVPMatrix, 0, scroller.getCurrX(), 0.f, 1.f, 0.f);
    Matrix.rotateM(mMVPMatrix, 0, 5.f, 1.f, 0.f, 0.f);


    GLES20.glUseProgram(shaderProgram);

    int positionHandle = GLES20.glGetAttribLocation(shaderProgram, "vPosition");

    GLES20.glVertexAttribPointer(positionHandle, 3,
            GLES20.GL_FLOAT, false,
            0, vertexBuffer);

    int colorHandle = GLES20.glGetAttribLocation(shaderProgram, "aColor");
    GLES20.glVertexAttribPointer(colorHandle, 4,
            GLES20.GL_FLOAT, false,
            4 * 4, colorBuffer);

    int mMVPMatrixHandle = GLES20.glGetUniformLocation(shaderProgram, "uMVPMatrix");

    GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);

    GLES20.glEnable(GLES20.GL_DEPTH_TEST);
    GLES20.glEnableVertexAttribArray(colorHandle);
    GLES20.glEnableVertexAttribArray(positionHandle);
    GLES20.glDrawElements(
            GLES20.GL_TRIANGLES, index.length,
            GLES20.GL_UNSIGNED_SHORT, indexBuffer);

    GLES20.glDisableVertexAttribArray(positionHandle);
    GLES20.glDisable(GLES20.GL_DEPTH_TEST);
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
public void draw(int paramInt1, int paramInt2, FloatBuffer paramFloatBuffer1, FloatBuffer paramFloatBuffer2)
{
    z();
    C();
    start();
    if ((!isInitialized()) || (this.bD == null) || (this.bE == null) || (null == H())) {
        return;
    }
    if (paramInt1 == -1) {
        return;
    }
    int i = H().size();
    int j = paramInt1;
    for (int k = 0; k < i; k++)
    {
        GPUImageFilter localGPUImageFilter = (GPUImageFilter)H().get(k);
        int m = k < i - 1 ? 1 : 0;
        if (m != 0)
        {
            GLES20.glBindFramebuffer(36160, this.bD[(k % 2)]);
            GLES20.glClearColor(0.0F, 0.0F, 0.0F, 0.0F);
        }
        else if (-1 != paramInt2)
        {
            GLES20.glBindFramebuffer(36160, paramInt2);
            GLES20.glClearColor(0.0F, 0.0F, 0.0F, 0.0F);
        }
        if (k == 0)
        {
            localGPUImageFilter.d(false);
            localGPUImageFilter.onDraw(j, paramFloatBuffer1, paramFloatBuffer2);
        }
        else if (k == i - 1)
        {
            localGPUImageFilter.d(i % 2 == 0);
            localGPUImageFilter.onDraw(j, this.bF, i % 2 == 0 ? this.bH : this.bG);
        }
        else
        {
            localGPUImageFilter.d(false);
            localGPUImageFilter.onDraw(j, this.bF, this.bG);
        }
        if (null != this.bK) {
            this.bK.onSingleFilterDrawed(this.aS, this.aT);
        }
        if (m != 0)
        {
            GLES20.glBindFramebuffer(36160, 0);
            j = this.bE[(k % 2)];
        }
        else
        {
            GLES20.glBindFramebuffer(36160, 0);
        }
    }
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
void draw() {
    EGLDisplay mSavedEglDisplay = EGL14.eglGetCurrentDisplay();
    EGLSurface mSavedEglDrawSurface = EGL14.eglGetCurrentSurface(EGL14.EGL_DRAW);
    EGLSurface mSavedEglReadSurface = EGL14.eglGetCurrentSurface(EGL14.EGL_READ);
    EGLContext mSavedEglContext = EGL14.eglGetCurrentContext();
    {
        AndroidUntil.checkGlError("draw_S");
        if (mRecorderImpl.isFirstSetup()) {
            mRecorderImpl.startSwapAsync();
            mRecorderImpl.makeCurrent();
            AndroidUntil.checkGlError("initGL_S");

            mProgram = AndroidUntil.createProgram();
            maPositionHandle = GLES20.glGetAttribLocation(mProgram, "position");
            maTextCodeHandle = GLES20.glGetAttribLocation(mProgram, "inputTextureCoordinate");
            muSamplerHandle = GLES20.glGetUniformLocation(mProgram, "uSampler");
            muPosMtxHandle = GLES20.glGetUniformLocation(mProgram, "uPosMtx");

            Matrix.scaleM(mSymmetryMtx, 0, -1, 1, 1);
            GLES20.glDisable(GLES20.GL_DEPTH_TEST);
            GLES20.glDisable(GLES20.GL_CULL_FACE);
            GLES20.glDisable(GLES20.GL_BLEND);
            AndroidUntil.checkGlError("initGL_E");
        } else {
            mRecorderImpl.makeCurrent();
        }
        GLES20.glViewport(0, 0, mVideoWidth, mVideoHeight);
        GLES20.glClearColor(0f, 0f, 0f, 1f);
        GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
        GLES20.glUseProgram(mProgram);
        mNormalVtxBuf.position(0);
        GLES20.glVertexAttribPointer(maPositionHandle,
                3, GLES20.GL_FLOAT, false, 4 * 3, mNormalVtxBuf);
        GLES20.glEnableVertexAttribArray(maPositionHandle);
        mCameraVertexCoordinatesBuffer.position(0);
        GLES20.glVertexAttribPointer(maTextCodeHandle,
                2, GLES20.GL_FLOAT, false, 4 * 2, mCameraVertexCoordinatesBuffer);
        GLES20.glEnableVertexAttribArray(maTextCodeHandle);
        GLES20.glUniform1i(muSamplerHandle, 0);
        GLES20.glUniformMatrix4fv(muPosMtxHandle, 1, false, mNormalMtx, 0);
        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mFboTexId);
        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

        mRecorderImpl.swapBuffers();
        AndroidUntil.checkGlError("draw_E");
    }
    if (!EGL14.eglMakeCurrent(
            mSavedEglDisplay,
            mSavedEglDrawSurface,
            mSavedEglReadSurface,
            mSavedEglContext)) {
        throw new RuntimeException("eglMakeCurrent failed");
    }
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void onSurfaceCreated(GL10 glUnused, EGLConfig config) {
    heightMap = new HeightMap();

    // Set the background clear color to black.
    GLES20.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

    // Enable depth testing
    GLES20.glEnable(GLES20.GL_DEPTH_TEST);

    // Position the eye in front of the origin.
    final float eyeX = 0.0f;
    final float eyeY = 0.0f;
    final float eyeZ = -0.5f;

    // We are looking toward the distance
    final float lookX = 0.0f;
    final float lookY = 0.0f;
    final float lookZ = -5.0f;

    // Set our up vector. This is where our head would be pointing were we
    // holding the camera.
    final float upX = 0.0f;
    final float upY = 1.0f;
    final float upZ = 0.0f;

    // Set the view matrix. This matrix can be said to represent the camera
    // position.
    // NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination
    // of a model and view matrix. In OpenGL 2, we can keep track of these
    // matrices separately if we choose.
    Matrix.setLookAtM(viewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);

    final String vertexShader = RawResourceReader.readTextFileFromRawResource(lessonEightActivity,
            R.raw.per_pixel_vertex_shader_no_tex);
    final String fragmentShader = RawResourceReader.readTextFileFromRawResource(lessonEightActivity,
            R.raw.per_pixel_fragment_shader_no_tex);

    final int vertexShaderHandle = Utils.compileShader(GLES20.GL_VERTEX_SHADER, vertexShader);
    final int fragmentShaderHandle = Utils.compileShader(GLES20.GL_FRAGMENT_SHADER, fragmentShader);

    program = Utils.createAndLinkProgram(vertexShaderHandle, fragmentShaderHandle, new String[]{
            POSITION_ATTRIBUTE, NORMAL_ATTRIBUTE, COLOR_ATTRIBUTE});

    // Initialize the accumulated rotation matrix
    Matrix.setIdentityM(accumulatedRotation, 0);
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
public void drawFrame(SurfaceTexture st) {
    checkGlError("onDrawFrame start");
    st.getTransformMatrix(mSTMatrix);
    GLES20.glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
    GLES20.glUseProgram(mProgram);
    checkGlError("glUseProgram");
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, mTextureID);
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
    GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false,
        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maPosition");
    GLES20.glEnableVertexAttribArray(maPositionHandle);
    checkGlError("glEnableVertexAttribArray maPositionHandle");
    mTriangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
    GLES20.glVertexAttribPointer(maTextureHandle, 2, GLES20.GL_FLOAT, false,
        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
    checkGlError("glVertexAttribPointer maTextureHandle");
    GLES20.glEnableVertexAttribArray(maTextureHandle);
    checkGlError("glEnableVertexAttribArray maTextureHandle");
    Matrix.setIdentityM(mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
    GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
    checkGlError("glDrawArrays");

    if (mFingerDown) {
     float[] scratch = new float[16];
     // Set the camera position (View matrix)
     Matrix.setLookAtM(mViewMatrix, 0, 0, 0, -3, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
     mViewMatrix[12] = (float) (mTouchX * 2.0f / mWidth - 1.0);
     mViewMatrix[13] = (float) (mTouchY * -2.0f / mHeight + 1.0);
     // Calculate the projection and view transformation
     Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
     // Create a rotation for the triangle
     // Use the following code to generate constant rotation.
     // Leave this code out when using TouchEvents.
     long time = SystemClock.uptimeMillis() % 4000L;
     float mAngle = 0.090f * ((int) time);
     Matrix.setRotateM(mRotationMatrix, 0, mAngle, 0, 0, 1.0f);
     // Combine the rotation matrix with the projection and camera view
     // Note that the mMVPMatrix factor *must be first* in order
     // for the matrix multiplication product to be correct.
     Matrix.multiplyMM(scratch, 0, mMVPMatrix, 0, mRotationMatrix, 0);
     // Draw triangle
     mTriangle.draw(scratch);
    }
    
    GLES20.glFinish();
}
 

import android.opengl.GLES20; //導入方法依賴的package包/類
@Override
public void onDrawFrame(GL10 unused) {
    GLES20.glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
    GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);

    Matrix.setLookAtM(mViewMatrix, 0, 0, 0, -3, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
    Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);

    GLES20.glUseProgram(shaderProgram);

    int positionHandle = GLES20.glGetAttribLocation(shaderProgram, "vPosition");

    GLES20.glVertexAttribPointer(positionHandle, 3,
            GLES20.GL_FLOAT, false,
            3 * 4, vertexBuffer);

    int colorHandle = GLES20.glGetUniformLocation(shaderProgram, "vColor");

    GLES20.glUniform4fv(colorHandle, 1, color, 0);

    int mMVPMatrixHandle = GLES20.glGetUniformLocation(shaderProgram, "uMVPMatrix");

    GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);

    GLES20.glEnableVertexAttribArray(positionHandle);
    GLES20.glDrawElements(
            GLES20.GL_TRIANGLES, index.length,
            GLES20.GL_UNSIGNED_SHORT, indexBuffer);

    GLES20.glDisableVertexAttribArray(positionHandle);
}