Function glDraw

src/engineWebGL.js:557–576

Add a sprite to the gl draw list, used by all gl draw functions * @param {number} x * @param {number} y * @param {number} sizeX * @param {number} sizeY * @param {number} [angle] * @param {number} [uv0X] * @param {number} [uv0Y] * @param {number} [uv1X] * @param {number} [uv1Y] *

(x, y, sizeX, sizeY, angle=0, uv0X=0, uv0Y=0, uv1X=1, uv1Y=1, rgba=-1, rgbaAdditive=0)

 *  @param {number} [rgbaAdditive=0] - black is 0
 *  @memberof WebGL */
function glDraw(x, y, sizeX, sizeY, angle=0, uv0X=0, uv0Y=0, uv1X=1, uv1Y=1, rgba=-1, rgbaAdditive=0)
{
    // flush if there is not enough room or if different blend mode
    if (glBatchCount >= gl_MAX_INSTANCES || glBatchAdditive !== glAdditive)
        glFlush();
    glSetInstancedMode();

    let offset = glBatchCount++ * gl_INDICES_PER_INSTANCE;
    glPositionData[offset++] = x;
    glPositionData[offset++] = y;
    glPositionData[offset++] = sizeX;
    glPositionData[offset++] = sizeY;
    glPositionData[offset++] = uv0X;
    glPositionData[offset++] = uv0Y;
    glPositionData[offset++] = uv1X;
    glPositionData[offset++] = uv1Y;
    glColorData[offset++] = rgba;
    glColorData[offset++] = rgbaAdditive;
    glPositionData[offset++] = angle;
}

/** Add an untextured rect to the gl draw list
 *  Zeroes the uvs and rgba so the texture contribution multiplies to 0,