Example usage for android.opengl GLES20 glUniform4fv

Introduction

In this page you can find the example usage for android.opengl GLES20 glUniform4fv.

Prototype

public static native void glUniform4fv(int location, int count, float[] v, int offset);

Source Link

Usage

From source file:Triangle.java

public void draw() {
    GLES20.glUseProgram(mProgram);/*from   w ww.jav a 2 s .  c o  m*/
    mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");
    GLES20.glEnableVertexAttribArray(mPositionHandle);
    GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride,
            vertexBuffer);
    mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");
    GLES20.glUniform4fv(mColorHandle, 1, color, 0);
    GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);
    GLES20.glDisableVertexAttribArray(mPositionHandle);
}

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From source file:Triangle.java

public void draw(float[] mvpMatrix) {
    GLES20.glUseProgram(mProgram);/*from w  w w  .j a  v a2s .c om*/
    mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");
    GLES20.glEnableVertexAttribArray(mPositionHandle);
    GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, vertexStride,
            vertexBuffer);
    mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");
    GLES20.glUniform4fv(mColorHandle, 1, color, 0);

    mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
    GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mvpMatrix, 0);

    GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);
    GLES20.glDisableVertexAttribArray(mPositionHandle);
}

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