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0031293: Visualization, TKOpenGl - broken capping when PBR shading is ON

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Division by 'w' component has been added in texture coordinates calculations in PBR functions.
This commit is contained in:
iko 2020-01-13 13:41:39 +03:00 committed by bugmaster
parent 9df71488b3
commit c8bead4752
2 changed files with 17 additions and 7 deletions
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15
src/OpenGl/OpenGl_ShaderManager.cxx
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@ -2375,10 +2375,10 @@ TCollection_AsciiString OpenGl_ShaderManager::stdComputeLighting (Standard_Integ
EOL" in bool theIsFront)"
EOL"{"
EOL" DirectLighting = vec3(0.0);"
EOL" BaseColor = " + (theHasVertColor ? "getVertColor();" : "occTextureColor(occPBRMaterial_Color (theIsFront), TexCoord.st);")
+ EOL" Emission = occTextureEmissive(occPBRMaterial_Emission (theIsFront), TexCoord.st);"
EOL" Metallic = occTextureMetallic(occPBRMaterial_Metallic (theIsFront), TexCoord.st);"
EOL" NormalizedRoughness = occTextureRoughness(occPBRMaterial_NormalizedRoughness (theIsFront), TexCoord.st);"
EOL" BaseColor = " + (theHasVertColor ? "getVertColor();" : "occTextureColor(occPBRMaterial_Color (theIsFront), TexCoord.st / TexCoord.w);")
+ EOL" Emission = occTextureEmissive(occPBRMaterial_Emission (theIsFront), TexCoord.st / TexCoord.w);"
EOL" Metallic = occTextureMetallic(occPBRMaterial_Metallic (theIsFront), TexCoord.st / TexCoord.w);"
EOL" NormalizedRoughness = occTextureRoughness(occPBRMaterial_NormalizedRoughness (theIsFront), TexCoord.st / TexCoord.w);"
EOL" Roughness = occRoughness (NormalizedRoughness);"
EOL" IOR = occPBRMaterial_IOR (theIsFront);"
EOL" vec3 aPoint = thePoint.xyz / thePoint.w;"
@ -2395,7 +2395,7 @@ TCollection_AsciiString OpenGl_ShaderManager::stdComputeLighting (Standard_Integ
EOL" anIndirectLightingDiff *= occDiffIBLMap (theNormal).rgb;"
EOL" aColor += occLightAmbient.rgb * (anIndirectLightingDiff + anIndirectLightingSpec);"
EOL" aColor += Emission;"
EOL" occTextureOcclusion(aColor, TexCoord.st);"
EOL" occTextureOcclusion(aColor, TexCoord.st / TexCoord.w);"
EOL" return vec4 (aColor, mix(1.0, BaseColor.a, aRefractionCoeff.x));"
EOL"}";
}
@ -2722,11 +2722,12 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramPhong (Handle(OpenGl_Sha
// apply normal map texture
aSrcFragExtraMain +=
EOL"#if defined(THE_HAS_TEXTURE_NORMAL)"
EOL" vec4 aMapNormalValue = occTextureNormal(TexCoord.st / TexCoord.w);"
EOL" vec2 aTexCoord = TexCoord.st / TexCoord.w;"
EOL" vec4 aMapNormalValue = occTextureNormal(aTexCoord);"
EOL" if (aMapNormalValue.w > 0.5)"
EOL" {"
EOL" aMapNormalValue.xyz = normalize (aMapNormalValue.xyz * 2.0 - vec3(1.0));"
EOL" mat2 aDeltaUVMatrix = mat2 (dFdx(TexCoord.st / TexCoord.w), dFdy(TexCoord.st / TexCoord.w));"
EOL" mat2 aDeltaUVMatrix = mat2 (dFdx(aTexCoord), dFdy(aTexCoord));"
EOL" aDeltaUVMatrix = mat2 (aDeltaUVMatrix[1][1], -aDeltaUVMatrix[0][1], -aDeltaUVMatrix[1][0], aDeltaUVMatrix[0][0]);"
EOL" mat2x3 aDeltaVectorMatrix = mat2x3 (dFdx (PositionWorld.xyz), dFdy (PositionWorld.xyz));"
EOL" aDeltaVectorMatrix = aDeltaVectorMatrix * aDeltaUVMatrix;"

9
tests/demo/samples/dimensionspbr Normal file
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@ -0,0 +1,9 @@
source $env(CSF_OCCTSamplesPath)/tcl/dimensions.tcl
vcaps -ffp 0
vrenderparams -shadingModel pbr
vlight -clear
vlight -add ambient -intensity 1
vlight -add directional -dir 0 0 -1 -head 1 -intensity 1
vdump $imagedir/${test_image}.png
puts "TEST COMPLETED"