Method mergeSurfaceBuffer

Source/Surface.cpp:284–314

* Merge another SDLsurface onto our rendered surface */

 * Merge another SDLsurface onto our rendered surface
 */
void cSurface::mergeSurfaceBuffer( const cSurface* pFrom ) {
    auto SourceSurface = pFrom->GetSurface();

    const uint32 *bufferCurrent = ((uint32*)SourceSurface->pixels);
    const uint32 *bufferCurrentMax = (uint32*)(((uint8*)SourceSurface->pixels) + (SourceSurface->h * SourceSurface->pitch));

    uint32 *bufferTarget = (uint32*)mSDLSurface->pixels;
    uint32 *bufferTargetMax = (uint32*)(((uint8*)mSDLSurface->pixels) + (mSDLSurface->h * mSDLSurface->pitch));

    // Loop until we reach the destination end
    while (bufferTarget < bufferTargetMax) {

        // Break out if we pass the source end
        if (bufferCurrent >= bufferCurrentMax)
            break;

        // Non zero value to draw
        if (*bufferCurrent) {

            // Value in palette range?
            *bufferTarget = *bufferCurrent;
        }

        // Next Source/Destination
        ++bufferCurrent;
        ++bufferTarget;
    }

    if (mTexture)
        SDL_UpdateTexture(mTexture, NULL, mSDLSurface->pixels, mSDLSurface->pitch);
}

void cSurface::clearBuffer(size_t pColor) {