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Ndk/Rendersystem: Add point-light shadows generation 

Former-commit-id: ecf1fb1c83bafddba9e91f31f018e72180893e5c
This commit is contained in:
Lynix 2015-07-05 23:56:30 +02:00
parent 1f2e810927
commit 4d07735b85
1 changed files with 68 additions and 23 deletions
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65
SDK/src/NDK/Systems/RenderSystem.cpp
View File

@ -95,27 +95,49 @@ namespace Ndk
if (!m_shadowRT.IsValid())
m_shadowRT.Create();
NzSceneData dummySceneData;
dummySceneData.ambientColor = NzColor(0, 0, 0);
dummySceneData.background = nullptr;
dummySceneData.viewer = nullptr; //< Depth technique doesn't require any viewer
for (const Ndk::EntityHandle& light : m_lights)
{
LightComponent& lightComponent = light->GetComponent<LightComponent>();
NodeComponent& lightNode = light->GetComponent<NodeComponent>();
if (!lightComponent.IsShadowCastingEnabled() || lightComponent.GetLightType() != nzLightType_Spot)
if (!lightComponent.IsShadowCastingEnabled() || lightComponent.GetLightType() == nzLightType_Directional)
continue;
NzVector2ui shadowMapSize(lightComponent.GetShadowMap()->GetSize());
m_shadowRT.AttachTexture(nzAttachmentPoint_Depth, 0, lightComponent.GetShadowMap());
switch (lightComponent.GetLightType())
{
case nzLightType_Point:
{
static NzQuaternionf rotations[6] =
{
NzQuaternionf::RotationBetween(NzVector3f::Forward(), NzVector3f::UnitX()), // nzCubemapFace_PositiveX
NzQuaternionf::RotationBetween(NzVector3f::Forward(), -NzVector3f::UnitX()), // nzCubemapFace_NegativeX
NzQuaternionf::RotationBetween(NzVector3f::Forward(), -NzVector3f::UnitY()), // nzCubemapFace_PositiveY
NzQuaternionf::RotationBetween(NzVector3f::Forward(), NzVector3f::UnitY()), // nzCubemapFace_NegativeY
NzQuaternionf::RotationBetween(NzVector3f::Forward(), -NzVector3f::UnitZ()), // nzCubemapFace_PositiveZ
NzQuaternionf::RotationBetween(NzVector3f::Forward(), NzVector3f::UnitZ()) // nzCubemapFace_NegativeZ
};
///TODO: Cache the matrices in the light?
NzRenderer::SetMatrix(nzMatrixType_Projection, NzMatrix4f::Perspective(lightComponent.GetOuterAngle(), 1.f, 1.f, 1000.f));
NzRenderer::SetMatrix(nzMatrixType_View, NzMatrix4f::ViewMatrix(lightNode.GetPosition(), lightNode.GetRotation()));
for (unsigned int face = 0; face < 6; ++face)
{
m_shadowRT.AttachTexture(nzAttachmentPoint_Depth, 0, lightComponent.GetShadowMap(), face);
NzRenderer::SetTarget(&m_shadowRT);
NzRenderer::SetViewport(NzRecti(0, 0, shadowMapSize.x, shadowMapSize.y));
///TODO: Cache the matrices in the light?
NzRenderer::SetMatrix(nzMatrixType_Projection, NzMatrix4f::Perspective(NzFromDegrees(90.f), 1.f, 0.1f, lightComponent.GetRadius()));
NzRenderer::SetMatrix(nzMatrixType_View, NzMatrix4f::ViewMatrix(lightNode.GetPosition(), rotations[face]));
NzAbstractRenderQueue* renderQueue = m_shadowTechnique.GetRenderQueue();
renderQueue->Clear();
///TODO: Culling
for (const Ndk::EntityHandle& drawable : m_drawables)
{
GraphicsComponent& graphicsComponent = drawable->GetComponent<GraphicsComponent>();
@ -124,12 +146,35 @@ namespace Ndk
graphicsComponent.AddToRenderQueue(renderQueue);
}
NzSceneData sceneData;
sceneData.ambientColor = NzColor(0, 0, 0);
sceneData.background = nullptr;
sceneData.viewer = nullptr; //< Depth technique doesn't require any viewer
m_shadowTechnique.Draw(dummySceneData);
}
break;
}
m_shadowTechnique.Draw(sceneData);
case nzLightType_Spot:
m_shadowRT.AttachTexture(nzAttachmentPoint_Depth, 0, lightComponent.GetShadowMap());
NzRenderer::SetTarget(&m_shadowRT);
NzRenderer::SetViewport(NzRecti(0, 0, shadowMapSize.x, shadowMapSize.y));
///TODO: Cache the matrices in the light?
NzRenderer::SetMatrix(nzMatrixType_Projection, NzMatrix4f::Perspective(lightComponent.GetOuterAngle()*2.f, 1.f, 0.1f, lightComponent.GetRadius()));
NzRenderer::SetMatrix(nzMatrixType_View, NzMatrix4f::ViewMatrix(lightNode.GetPosition(), lightNode.GetRotation()));
NzAbstractRenderQueue* renderQueue = m_shadowTechnique.GetRenderQueue();
renderQueue->Clear();
///TODO: Culling
for (const Ndk::EntityHandle& drawable : m_drawables)
{
GraphicsComponent& graphicsComponent = drawable->GetComponent<GraphicsComponent>();
NodeComponent& drawableNode = drawable->GetComponent<NodeComponent>();
graphicsComponent.AddToRenderQueue(renderQueue);
}
m_shadowTechnique.Draw(dummySceneData);
break;
}
}
}