Example usage for android.opengl GLES20 glUniform1i

Introduction

In this page you can find the example usage for android.opengl GLES20 glUniform1i.

Prototype

public static native void glUniform1i(int location, int x);

Source Link

Usage

From source file:com.tumblr.cardboard.Tumblr3DActivity.java

/**
 * Draw the rect. We've set all of our transformation matrices. Now we simply pass them into
 * the shader.//from  ww w  .jav a2s. com
 */
public void drawRect(int texIndex) {
    if (mRectTextureIds[texIndex] < INVALID_TEXTURE) {
        // can't draw this rectangle
        return;
    }

    // This is not the floor!
    GLES20.glUniform1f(mIsFloorParam, 0f);

    // Set the active texture unit
    GLES20.glActiveTexture(GLES20.GL_TEXTURE0 + texIndex);

    // Bind the texture to this unit.
    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mRectTextureIds[texIndex]);

    // Tell the texture uniform sampler to use this texture in the shader by binding to texture unit 0.
    GLES20.glUniform1i(mRectTextureUniformParam, texIndex);

    // Set the Model in the shader, used to calculate lighting
    GLES20.glUniformMatrix4fv(mModelParam, 1, false, mModelRect[texIndex], 0);

    // Set the ModelView in the shader, used to calculate lighting
    GLES20.glUniformMatrix4fv(mModelViewParam, 1, false, mModelView, 0);

    // Set the position of the rect
    GLES20.glVertexAttribPointer(mPositionParam, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, mRectVertices);

    // Set the ModelViewProjection matrix in the shader.
    GLES20.glUniformMatrix4fv(mModelViewProjectionParam, 1, false, mModelViewProjection, 0);

    // Set the normal positions of the rect, again for shading
    GLES20.glVertexAttribPointer(mNormalParam, 3, GLES20.GL_FLOAT, false, 0, mRectNormals);

    // Connect texBuffer to "aTextureCoord".
    GLES20.glVertexAttribPointer(mRectTextureCoordinateParam, 2, GLES20.GL_FLOAT, false, 0, mRectTexCoords);

    // Enable the "aTextureCoord" vertex attribute.
    GLES20.glEnableVertexAttribArray(mRectTextureCoordinateParam);

    if (texIndex == mSelectedTexIndex || isLookingAtObject(texIndex)) {
        GLES20.glVertexAttribPointer(mColorParam, 4, GLES20.GL_FLOAT, false, 0, mRectFoundColors);
    } else {
        GLES20.glVertexAttribPointer(mColorParam, 4, GLES20.GL_FLOAT, false, 0, mRectColors);
    }
    GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, WorldLayoutData.RECT_COORDS.length / 3); // 3 b/c triangles
    checkGLError("Drawing rect");
}

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