def buildBackBufferCopyPhase(renderTarget):
global backBufferCopyCache
if renderTarget == None:
from RenderTargets import rt
renderTarget = rt('PostProcessing/backBufferCopy')
if backBufferCopyCache.has_key(renderTarget):
return backBufferCopyCache[renderTarget]
else:
c = CopyBackBuffer()
c.renderTarget = renderTarget
backBufferCopyCache[renderTarget] = c
return c
def buildPhase(input, output, fxFile, sampleProvider = straightTransfer4Tap, srcBlend = BW_BLEND_ONE, destBlend = BW_BLEND_ZERO):
if input == None:
from RenderTargets import rt
input = rt('PostProcessing/backBufferCopy').texture
if sampleProvider == straightTransfer4Tap:
f = TransferQuad()
else:
f = FilterQuad()
f.samples = sampleProvider()
p = Phase()
m = Material(fxFile)
m.inputTexture = input
p.filterQuad = f
p.material = m
p.material.srcBlend = srcBlend
p.material.destBlend = destBlend
p.renderTarget = output
p.clearRenderTarget = False
return p
