Method clear

Engine/source/gfx/gl/gfxGLDevice.cpp:549–588

}

void GFXGLDevice::clear(U32 flags, const LinearColorF& color, F32 z, U32 stencil)
{
   // Make sure we have flushed our render target state.
   _updateRenderTargets();
   
   bool writeAllColors = true;
   bool zwrite = true;   
   bool writeAllStencil = true;
   const GFXStateBlockDesc *desc = NULL;
   if (mCurrentGLStateBlock)
   {
      desc = &mCurrentGLStateBlock->getDesc();
      zwrite = desc->zWriteEnable;
      writeAllColors = desc->colorWriteRed && desc->colorWriteGreen && desc->colorWriteBlue && desc->colorWriteAlpha;
      writeAllStencil = desc->stencilWriteMask == 0xFFFFFFFF;
   }
   
   glColorMask(true, true, true, true);
   glDepthMask(true);
   glStencilMask(0xFFFFFFFF);
   glClearColor(color.red, color.green, color.blue, color.alpha);
   glClearDepth(z);
   glClearStencil(stencil);

   GLbitfield clearflags = 0;
   clearflags |= (flags & GFXClearTarget)   ? GL_COLOR_BUFFER_BIT : 0;
   clearflags |= (flags & GFXClearZBuffer)  ? GL_DEPTH_BUFFER_BIT : 0;
   clearflags |= (flags & GFXClearStencil)  ? GL_STENCIL_BUFFER_BIT : 0;

   glClear(clearflags);

   if(!writeAllColors)
      glColorMask(desc->colorWriteRed, desc->colorWriteGreen, desc->colorWriteBlue, desc->colorWriteAlpha);
   
   if(!zwrite)
      glDepthMask(false);

   if(!writeAllStencil)
      glStencilMask(desc->stencilWriteMask);
}

void GFXGLDevice::clearColorAttachment(const U32 attachment, const LinearColorF& color)
{