Java Code Examples for android.opengl.GLES20#glBlendColor()

The following examples show how to use android.opengl.GLES20#glBlendColor() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: GLES20Canvas.java    From PhotoMovie with Apache License 2.0 6 votes vote down vote up 
private void prepareDraw(int offset, int color, float lineWidth) {
    GLES20.glUseProgram(mDrawProgram);
    checkError();
    if (lineWidth > 0) {
        GLES20.glLineWidth(lineWidth);
        checkError();
    }
    float[] colorArray = getColor(color);
    boolean blendingEnabled = (colorArray[3] < 1f);
    enableBlending(blendingEnabled);
    if (blendingEnabled) {
        GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
        checkError();
    }

    GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
    setPosition(mDrawParameters, offset);
    checkError();
}
Example 2
Source File: GLES20Canvas.java    From android-openGL-canvas with Apache License 2.0 6 votes vote down vote up 
private void prepareDraw(int offset, int color, float lineWidth) {
    GLES20.glUseProgram(mDrawProgram);
    checkError();
    if (lineWidth > 0) {
        GLES20.glLineWidth(lineWidth);
        checkError();
    }
    float[] colorArray = getColor(color);
    enableBlending(true);
    GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
    checkError();

    GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
    setPosition(mDrawParameters, offset);
    checkError();
}
Example 3
Source File: GLES20Canvas.java    From Trebuchet with GNU General Public License v3.0 6 votes vote down vote up 
private void prepareDraw(int offset, int color, float lineWidth) {
    GLES20.glUseProgram(mDrawProgram);
    checkError();
    if (lineWidth > 0) {
        GLES20.glLineWidth(lineWidth);
        checkError();
    }
    float[] colorArray = getColor(color);
    boolean blendingEnabled = (colorArray[3] < 1f);
    enableBlending(blendingEnabled);
    if (blendingEnabled) {
        GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
        checkError();
    }

    GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
    setPosition(mDrawParameters, offset);
    checkError();
}
Example 4
Source File: GLES20Canvas.java    From TurboLauncher with Apache License 2.0 6 votes vote down vote up 
private void prepareDraw(int offset, int color, float lineWidth) {
    GLES20.glUseProgram(mDrawProgram);
    checkError();
    if (lineWidth > 0) {
        GLES20.glLineWidth(lineWidth);
        checkError();
    }
    float[] colorArray = getColor(color);
    boolean blendingEnabled = (colorArray[3] < 1f);
    enableBlending(blendingEnabled);
    if (blendingEnabled) {
        GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
        checkError();
    }

    GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
    setPosition(mDrawParameters, offset);
    checkError();
}
Example 5
Source File: GLES20Canvas.java    From LB-Launcher with Apache License 2.0 6 votes vote down vote up 
private void prepareDraw(int offset, int color, float lineWidth) {
    GLES20.glUseProgram(mDrawProgram);
    checkError();
    if (lineWidth > 0) {
        GLES20.glLineWidth(lineWidth);
        checkError();
    }
    float[] colorArray = getColor(color);
    boolean blendingEnabled = (colorArray[3] < 1f);
    enableBlending(blendingEnabled);
    if (blendingEnabled) {
        GLES20.glBlendColor(colorArray[0], colorArray[1], colorArray[2], colorArray[3]);
        checkError();
    }

    GLES20.glUniform4fv(mDrawParameters[INDEX_COLOR].handle, 1, colorArray, 0);
    setPosition(mDrawParameters, offset);
    checkError();
}
Example 6
Source File: AnnotationRenderer.java    From ARCore-Location with MIT License 5 votes vote down vote up 
public void draw(float[] cameraView, float[] cameraPerspective) {
    ShaderUtil.checkGLError(TAG, "Before draw");
    Matrix.multiplyMM(mModelViewMatrix, 0, cameraView, 0, mModelMatrix, 0);
    Matrix.multiplyMM(mModelViewProjectionMatrix, 0, cameraPerspective, 0, mModelViewMatrix, 0);

    GLES20.glUseProgram(mQuadProgram);

    // Attach the object texture.
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextures[0]);

    GLES20.glEnable(GLES20.GL_BLEND);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
    GLES20.glBlendColor(0,0,0,0);


    GLES20.glUniform1i(mTextureUniform, 0);
    GLES20.glUniformMatrix4fv(mModelViewProjectionUniform, 1, false, mModelViewProjectionMatrix, 0);
    // Set the vertex positions.
    GLES20.glVertexAttribPointer(
            mQuadPositionParam, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, mQuadVertices);

    // Set the texture coordinates.
    GLES20.glVertexAttribPointer(
            mQuadTexCoordParam, TEXCOORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, mQuadTexCoord);

    // Enable vertex arrays
    GLES20.glEnableVertexAttribArray(mQuadPositionParam);
    GLES20.glEnableVertexAttribArray(mQuadTexCoordParam);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

    // Disable vertex arrays
    GLES20.glDisableVertexAttribArray(mQuadPositionParam);
    GLES20.glDisableVertexAttribArray(mQuadTexCoordParam);

    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);

    ShaderUtil.checkGLError(TAG, "After draw");
}
Example 7
Source File: AnnotationRenderer.java    From ARCore-Location with MIT License 4 votes vote down vote up 
@Override
public void createOnGlThread(Context context, int distance) {
    String text = annotationText;

    // Read the texture.
    Bitmap textureBitmap = null;
    try {
        textureBitmap = drawTextToAnnotation(context, text, metresReadable(distance));
        textureBitmap.setHasAlpha(true);
    } catch (Exception e) {
        Log.e(TAG, "Exception reading texture", e);
        return;
    }

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glGenTextures(mTextures.length, mTextures, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextures[0]);

    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);

    GLES20.glBlendColor(0,0,0,0);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
    GLES20.glEnable(GLES20.GL_BLEND);
    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, textureBitmap, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);

    textureBitmap.recycle();

    ShaderUtil.checkGLError(TAG, "Texture loading");

    // Build the geometry of a simple imageRenderer.

    int numVertices = 4;
    if (numVertices != QUAD_COORDS.length / COORDS_PER_VERTEX) {
        throw new RuntimeException("Unexpected number of vertices in BackgroundRenderer.");
    }

    ByteBuffer bbVertices = ByteBuffer.allocateDirect(QUAD_COORDS.length * Float.BYTES);
    bbVertices.order(ByteOrder.nativeOrder());
    mQuadVertices = bbVertices.asFloatBuffer();
    mQuadVertices.put(QUAD_COORDS);
    mQuadVertices.position(0);

    ByteBuffer bbTexCoords =
            ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * Float.BYTES);
    bbTexCoords.order(ByteOrder.nativeOrder());
    mQuadTexCoord = bbTexCoords.asFloatBuffer();
    mQuadTexCoord.put(QUAD_TEXCOORDS);
    mQuadTexCoord.position(0);

    ByteBuffer bbTexCoordsTransformed =
            ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * Float.BYTES);
    bbTexCoordsTransformed.order(ByteOrder.nativeOrder());

    int vertexShader = loadGLShader(TAG, GLES20.GL_VERTEX_SHADER, VERTEX_SHADER);
    int fragmentShader = loadGLShader(TAG, GLES20.GL_FRAGMENT_SHADER, FRAGMENT_SHADER);

    mQuadProgram = GLES20.glCreateProgram();
    GLES20.glAttachShader(mQuadProgram, vertexShader);
    GLES20.glAttachShader(mQuadProgram, fragmentShader);
    GLES20.glLinkProgram(mQuadProgram);
    GLES20.glUseProgram(mQuadProgram);

    ShaderUtil.checkGLError(TAG, "Program creation");

    mQuadPositionParam = GLES20.glGetAttribLocation(mQuadProgram, "a_Position");
    mQuadTexCoordParam = GLES20.glGetAttribLocation(mQuadProgram, "a_TexCoord");
    mTextureUniform = GLES20.glGetUniformLocation(mQuadProgram, "u_Texture");
    mModelViewProjectionUniform =
            GLES20.glGetUniformLocation(mQuadProgram, "u_ModelViewProjection");

    ShaderUtil.checkGLError(TAG, "Program parameters");

    Matrix.setIdentityM(mModelMatrix, 0);
}
Example 8
Source File: AnnotationRenderer.java    From ARCore-Location with MIT License 4 votes vote down vote up 
@Override
public void draw(float[] cameraView, float[] cameraPerspective, float lightIntensity) {
    ShaderUtil.checkGLError(TAG, "Before draw");
    Matrix.multiplyMM(mModelViewMatrix, 0, cameraView, 0, mModelMatrix, 0);
    Matrix.multiplyMM(mModelViewProjectionMatrix, 0, cameraPerspective, 0, mModelViewMatrix, 0);

    GLES20.glUseProgram(mQuadProgram);

    // Attach the object texture.
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextures[0]);

    GLES20.glEnable(GLES20.GL_BLEND);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
    GLES20.glBlendColor(0,0,0,0);


    GLES20.glUniform1i(mTextureUniform, 0);
    GLES20.glUniformMatrix4fv(mModelViewProjectionUniform, 1, false, mModelViewProjectionMatrix, 0);
    // Set the vertex positions.
    GLES20.glVertexAttribPointer(
            mQuadPositionParam, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, mQuadVertices);

    // Set the texture coordinates.
    GLES20.glVertexAttribPointer(
            mQuadTexCoordParam, TEXCOORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, mQuadTexCoord);

    // Enable vertex arrays
    GLES20.glEnableVertexAttribArray(mQuadPositionParam);
    GLES20.glEnableVertexAttribArray(mQuadTexCoordParam);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);

    // Disable vertex arrays
    GLES20.glDisableVertexAttribArray(mQuadPositionParam);
    GLES20.glDisableVertexAttribArray(mQuadTexCoordParam);

    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);

    ShaderUtil.checkGLError(TAG, "After draw");
}
Example 9
Source File: AnnotationRenderer.java    From ARCore-Location with MIT License 4 votes vote down vote up 
public void createOnGlThread(Context context, String text, int distance) {
    // Read the texture.
    Bitmap textureBitmap = null;
    try {
        textureBitmap = drawTextToAnnotation(context, text, metresReadable(distance));
        textureBitmap.setHasAlpha(true);
    } catch (Exception e) {
        Log.e(TAG, "Exception reading texture", e);
        return;
    }

    GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
    GLES20.glGenTextures(mTextures.length, mTextures, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextures[0]);

    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);

    GLES20.glBlendColor(0,0,0,0);
    GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
    GLES20.glEnable(GLES20.GL_BLEND);
    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, textureBitmap, 0);
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);

    textureBitmap.recycle();

    ShaderUtil.checkGLError(TAG, "Texture loading");

    // Build the geometry of a simple imageRenderer.

    int numVertices = 4;
    if (numVertices != QUAD_COORDS.length / COORDS_PER_VERTEX) {
        throw new RuntimeException("Unexpected number of vertices in BackgroundRenderer.");
    }

    ByteBuffer bbVertices = ByteBuffer.allocateDirect(QUAD_COORDS.length * Float.BYTES);
    bbVertices.order(ByteOrder.nativeOrder());
    mQuadVertices = bbVertices.asFloatBuffer();
    mQuadVertices.put(QUAD_COORDS);
    mQuadVertices.position(0);

    ByteBuffer bbTexCoords =
            ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * Float.BYTES);
    bbTexCoords.order(ByteOrder.nativeOrder());
    mQuadTexCoord = bbTexCoords.asFloatBuffer();
    mQuadTexCoord.put(QUAD_TEXCOORDS);
    mQuadTexCoord.position(0);

    ByteBuffer bbTexCoordsTransformed =
            ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * Float.BYTES);
    bbTexCoordsTransformed.order(ByteOrder.nativeOrder());

    int vertexShader = loadGLShader(TAG, GLES20.GL_VERTEX_SHADER, VERTEX_SHADER);
    int fragmentShader = loadGLShader(TAG, GLES20.GL_FRAGMENT_SHADER, FRAGMENT_SHADER);

    mQuadProgram = GLES20.glCreateProgram();
    GLES20.glAttachShader(mQuadProgram, vertexShader);
    GLES20.glAttachShader(mQuadProgram, fragmentShader);
    GLES20.glLinkProgram(mQuadProgram);
    GLES20.glUseProgram(mQuadProgram);

    ShaderUtil.checkGLError(TAG, "Program creation");

    mQuadPositionParam = GLES20.glGetAttribLocation(mQuadProgram, "a_Position");
    mQuadTexCoordParam = GLES20.glGetAttribLocation(mQuadProgram, "a_TexCoord");
    mTextureUniform = GLES20.glGetUniformLocation(mQuadProgram, "u_Texture");
    mModelViewProjectionUniform =
            GLES20.glGetUniformLocation(mQuadProgram, "u_ModelViewProjection");

    ShaderUtil.checkGLError(TAG, "Program parameters");

    Matrix.setIdentityM(mModelMatrix, 0);
}
Example 10
Source File: AndroidGL.java    From trekarta with GNU General Public License v3.0 4 votes vote down vote up 
@Override
public void blendColor(float red, float green, float blue, float alpha) {
    GLES20.glBlendColor(red, green, blue, alpha);
}