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Fixed bug which culled medium sized objects in shadow maps due to perspective frustum assumed octree selection

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This commit is contained in:
Olivier Prat 2017-12-11 12:19:10 +01:00
parent a679dc6705
commit b9d49318e7
2 changed files with 11 additions and 1 deletions
libraries/render-utils/src
RenderShadowTask.cppRenderShadowTask.h

10
libraries/render-utils/src/RenderShadowTask.cpp
View file

@ -260,6 +260,7 @@ void RenderShadowCascadeSetup::run(const render::RenderContextPointer& renderCon
RenderArgs* args = renderContext->args;
output.edit0() = args->_renderMode;
output.edit2() = args->_sizeScale;
const auto globalShadow = lightStage->getCurrentKeyShadow();
if (globalShadow && _cascadeIndex<globalShadow->getCascadeCount()) {
@ -270,6 +271,14 @@ void RenderShadowCascadeSetup::run(const render::RenderContextPointer& renderCon
// Set the keylight render args
args->pushViewFrustum(*(globalShadow->getCascade(_cascadeIndex).getFrustum()));
args->_renderMode = RenderArgs::SHADOW_RENDER_MODE;
if (lightStage->getCurrentKeyLight()->getType() == model::Light::SUN) {
const float shadowSizeScale = 1e16f;
// Set the size scale to a ridiculously high value to prevent small object culling which assumes
// the view frustum is a perspective projection. But this isn't the case for the sun which
// is an orthographic projection.
args->_sizeScale = shadowSizeScale;
}
} else {
output.edit1() = ItemFilter::Builder::nothing();
}
@ -284,4 +293,5 @@ void RenderShadowCascadeTeardown::run(const render::RenderContextPointer& render
assert(args->hasViewFrustum());
// Reset the render args
args->_renderMode = input.get0();
args->_sizeScale = input.get2();
};

2
libraries/render-utils/src/RenderShadowTask.h
View file

@ -64,7 +64,7 @@ public:
class RenderShadowCascadeSetup {
public:
using Outputs = render::VaryingSet2<RenderArgs::RenderMode, render::ItemFilter>;
using Outputs = render::VaryingSet3<RenderArgs::RenderMode, render::ItemFilter, float>;
using JobModel = render::Job::ModelO<RenderShadowCascadeSetup, Outputs>;
RenderShadowCascadeSetup(unsigned int cascadeIndex) : _cascadeIndex{ cascadeIndex } {}