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0032237: Visualization, TKOpenGl - fix Gouraud shading within perspective camera projection

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kgv 2021-03-22 17:57:30 +03:00 committed by bugmaster
parent 1a96d253a5
commit a076535090
1 changed files with 13 additions and 5 deletions
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18
src/Graphic3d/Graphic3d_ShaderManager.cxx
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@ -1476,7 +1476,16 @@ Handle(Graphic3d_ShaderProgram) Graphic3d_ShaderManager::getStdProgramGouraud (c
EOL"{"
EOL" vec4 aPositionWorld = occModelWorldMatrix * occVertex;"
EOL" vec3 aNormal = transformNormal (occNormal);"
EOL" vec3 aView = (occWorldViewMatrixInverse * vec4(0.0, 0.0, 1.0, 0.0)).xyz;"
EOL" vec3 aView;"
EOL" if (occProjectionMatrix[3][3] == 1.0)"
EOL" {"
EOL" aView = (occWorldViewMatrixInverse * vec4(0.0, 0.0, 1.0, 0.0)).xyz;"
EOL" }"
EOL" else"
EOL" {"
EOL" vec3 anEye = (occWorldViewMatrixInverse * vec4(0.0, 0.0, 0.0, 1.0)).xyz;"
EOL" aView = normalize (anEye - aPositionWorld.xyz);"
EOL" }"
EOL" FrontColor = computeLighting (aNormal, aView, aPositionWorld, true);"
EOL" BackColor = computeLighting (aNormal, aView, aPositionWorld, false);"
+ aSrcVertExtraMain
@ -1693,14 +1702,13 @@ Handle(Graphic3d_ShaderProgram) Graphic3d_ShaderManager::getStdProgramPhong (con
EOL" PositionWorld = occModelWorldMatrix * occVertex;"
EOL" if (occProjectionMatrix[3][3] == 1.0)"
EOL" {"
EOL" View = vec3(0.0, 0.0, 1.0);"
EOL" View = (occWorldViewMatrixInverse * vec4(0.0, 0.0, 1.0, 0.0)).xyz;"
EOL" }"
EOL" else"
EOL" {"
EOL" vec4 aPosition = occWorldViewMatrix * PositionWorld;"
EOL" View = -aPosition.xyz;"
EOL" vec3 anEye = (occWorldViewMatrixInverse * vec4(0.0, 0.0, 0.0, 1.0)).xyz;"
EOL" View = normalize (anEye - PositionWorld.xyz);"
EOL" }"
EOL" View = (occWorldViewMatrixInverse * vec4(View, 0.0)).xyz;"
+ aSrcVertExtraMain
+ THE_VERT_gl_Position
+ EOL"}";