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| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2024-10-10 01:10:45 +0100 |
|---|---|---|
| committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2024-10-10 01:10:45 +0100 |
| commit | 1d58b128db3a4b9eff55031993390f8488878587 (patch) | |
| tree | 712120ebf78693dab9733ccc5d883968157e7763 | |
| parent | Use foliage yaw rotation to select shadow stencil layer (diff) | |
| download | ilt-1d58b128db3a4b9eff55031993390f8488878587.tar.bz2 ilt-1d58b128db3a4b9eff55031993390f8488878587.tar.xz ilt-1d58b128db3a4b9eff55031993390f8488878587.zip | |
Generate stencils as views offset from light direction
| -rw-r--r-- | gfx/gl/shadowStenciller.cpp | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/gfx/gl/shadowStenciller.cpp b/gfx/gl/shadowStenciller.cpp index ae4012a..30a67a7 100644 --- a/gfx/gl/shadowStenciller.cpp +++ b/gfx/gl/shadowStenciller.cpp @@ -10,13 +10,6 @@ #include "maths.h" #include <stdexcept> -namespace { - static constexpr std::array<float, 8> anglesEigthPi {-3, -2, -1, 0, 1, 2, 3, 4}; - static const auto angles = anglesEigthPi * [](auto ep) { - return rotate_yaw(ep * quarter_pi); - }; -} - ShadowStenciller::ShadowStenciller() : shadowCaster {shadowStencil_vs, shadowStencil_gs, shadowStencil_fs}, viewProjections {} { @@ -29,8 +22,8 @@ ShadowStenciller::ShadowStenciller() : void ShadowStenciller::setLightDirection(const LightDirection & lightDir) { - viewProjections = angles * [lightDirMat = rotate_pitch(lightDir.position().y)](const auto & a) { - return lightDirMat * a; + viewProjections = std::array<float, 8> {0, 1, 2, 3, 4, 5, 6, 7} * [&lightDir](const auto & ep) { + return rotate_pitch(half_pi - lightDir.position().y) * rotate_yaw((ep * quarter_pi) - lightDir.position().x); }; } |