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Attempt to make volumetric lighting work on ATI cards by allowing the driver to unroll the loops

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rdb 2010-09-10 17:51:28 +00:00
parent c6b163f757
commit 0a6aeea792
1 changed files with 10 additions and 7 deletions
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17
direct/src/filter/CommonFilters.py
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@ -248,17 +248,17 @@ class CommonFilters:
text += "float decay = 1.0f;\n"
text += "float2 curcoord = l_texcoordC.xy;\n"
text += "float2 lightdir = curcoord - k_casterpos.xy;\n"
text += "lightdir *= k_vlparams.y;\n"
text += "lightdir *= k_vlparams.x;\n"
text += "half4 sample = tex2D(k_txcolor, curcoord);\n"
text += "float3 vlcolor = sample.rgb * sample.a;\n"
text += "for (int i = 0; i < k_vlparams.x; i++) {\n"
text += "for (int i = 0; i < %s; i++) {\n" % int(configuration["VolumetricLighting"].numsamples)
text += " curcoord -= lightdir;\n"
text += " sample = tex2D(k_txcolor, curcoord);\n"
text += " sample *= sample.a * decay;//*weight\n"
text += " vlcolor += sample.rgb;\n"
text += " decay *= k_vlparams.z;\n"
text += " decay *= k_vlparams.y;\n"
text += "}\n"
text += "o_color += float4(vlcolor * k_vlparams.w, 1);\n"
text += "o_color += float4(vlcolor * k_vlparams.z, 1);\n"
if (configuration.has_key("Inverted")):
text += "o_color = float4(1, 1, 1, 1) - o_color;\n"
text += "}\n"
@ -292,7 +292,7 @@ class CommonFilters:
if (configuration.has_key("VolumetricLighting")):
config = configuration["VolumetricLighting"]
tcparam = config.density / float(config.numsamples)
self.finalQuad.setShaderInput("vlparams", config.numsamples, tcparam, config.decay, config.exposure)
self.finalQuad.setShaderInput("vlparams", tcparam, config.decay, config.exposure, 0.0)
if (changed == "AmbientOcclusion") or fullrebuild:
if (configuration.has_key("AmbientOcclusion")):
@ -388,10 +388,13 @@ class CommonFilters:
return True
def setVolumetricLighting(self, caster, numsamples = 32, density = 5.0, decay = 0.1, exposure = 0.1):
fullrebuild = (self.configuration.has_key("VolumetricLighting") == False)
oldconfig = self.configuration.get("VolumetricLighting", None)
fullrebuild = True
if (oldconfig) and (oldconfig.caster == caster):
fullrebuild = False
newconfig = FilterConfig()
newconfig.caster = caster
newconfig.numsamples = numsamples
newconfig.numsamples = int(numsamples)
newconfig.density = density
newconfig.decay = decay
newconfig.exposure = exposure