From 7299b08977acafe7eeba620f229a7169256f23cf Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sun, 1 Sep 2024 18:42:27 +0100 Subject: Extend depth of shadow box 10m to allow for depth offsets and clamp stencil to it --- gfx/gl/shaders/shadowDynamicPointStencil.gs | 1 + gfx/gl/shadowMapper.cpp | 13 +++++++------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/gfx/gl/shaders/shadowDynamicPointStencil.gs b/gfx/gl/shaders/shadowDynamicPointStencil.gs index 6d707ae..2873691 100644 --- a/gfx/gl/shaders/shadowDynamicPointStencil.gs +++ b/gfx/gl/shaders/shadowDynamicPointStencil.gs @@ -24,6 +24,7 @@ main() vec4 pos = viewProjection[gl_Layer] * vec4(vworldPos[0], 1); for (int c = 0; c < corners.length(); ++c) { gl_Position = pos + vec4(scale.xy * corners[c], 0, 0); + gl_Position.z = max(gl_Position.z, -1); texCoord = (corners[c] * 0.5) + 0.5; EmitVertex(); } diff --git a/gfx/gl/shadowMapper.cpp b/gfx/gl/shadowMapper.cpp index ac161e2..b08538d 100644 --- a/gfx/gl/shadowMapper.cpp +++ b/gfx/gl/shadowMapper.cpp @@ -102,12 +102,13 @@ ShadowMapper::update(const SceneProvider & scene, const Direction3D & dir, const std::transform(bandViewExtents.begin(), std::prev(bandViewExtents.end()), std::next(bandViewExtents.begin()), std::back_inserter(out), [bands = bandViewExtents.size() - 2, &lightViewDir, &sizes](const auto & near, const auto & far) mutable { - const auto extents_minmax = [extents = std::span {near.begin(), far.end()}](auto && comp) { - const auto mm = std::minmax_element(extents.begin(), extents.end(), comp); - return std::make_pair(comp.get(*mm.first), comp.get(*mm.second)); - }; - const std::array extents - = {extents_minmax(CompareBy {0}), extents_minmax(CompareBy {1}), extents_minmax(CompareBy {2})}; + const auto extents_minmax + = [extents = std::span {near.begin(), far.end()}](auto && comp, RelativeDistance extra) { + const auto mm = std::minmax_element(extents.begin(), extents.end(), comp); + return std::make_pair(comp.get(*mm.first) - extra, comp.get(*mm.second) + extra); + }; + const std::array extents = {extents_minmax(CompareBy {0}, 0), extents_minmax(CompareBy {1}, 0), + extents_minmax(CompareBy {2}, 10'000)}; const auto lightProjection = [](const auto & x, const auto & y, const auto & z) { return glm::ortho(x.first, x.second, y.first, y.second, -z.second, -z.first); -- cgit v1.2.3