void FSimpleHMD::DrawDistortionMesh_RenderThread(struct FRenderingCompositePassContext& Context, const FSceneView& View, const FIntPoint& TextureSize)
{
float ClipSpaceQuadZ = 0.0f;
FMatrix QuadTexTransform = FMatrix::Identity;
FMatrix QuadPosTransform = FMatrix::Identity;
const FIntRect SrcRect = View.ViewRect;
FRHICommandListImmediate& RHICmdList = Context.RHICmdList;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint ViewportSize = ViewFamily.RenderTarget->GetSizeXY();
RHICmdList.SetViewport(0, 0, 0.0f, ViewportSize.X, ViewportSize.Y, 1.0f);
static const uint32 NumVerts = 8;
static const uint32 NumTris = 4;
static const FDistortionVertex Verts[8] =
{
// left eye
{ FVector2D(-0.9f, -0.9f), FVector2D(0.0f, 1.0f), FVector2D(0.0f, 1.0f), FVector2D(0.0f, 1.0f), 1.0f, 0.0f },
{ FVector2D(-0.1f, -0.9f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), 1.0f, 0.0f },
{ FVector2D(-0.1f, 0.9f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), 1.0f, 0.0f },
{ FVector2D(-0.9f, 0.9f), FVector2D(0.0f, 0.0f), FVector2D(0.0f, 0.0f), FVector2D(0.0f, 0.0f), 1.0f, 0.0f },
// right eye
{ FVector2D(0.1f, -0.9f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), 1.0f, 0.0f },
{ FVector2D(0.9f, -0.9f), FVector2D(1.0f, 1.0f), FVector2D(1.0f, 1.0f), FVector2D(1.0f, 1.0f), 1.0f, 0.0f },
{ FVector2D(0.9f, 0.9f), FVector2D(1.0f, 0.0f), FVector2D(1.0f, 0.0f), FVector2D(1.0f, 0.0f), 1.0f, 0.0f },
{ FVector2D(0.1f, 0.9f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), 1.0f, 0.0f },
};
static const uint16 Indices[12] = { /*Left*/ 0, 1, 2, 0, 2, 3, /*Right*/ 4, 5, 6, 4, 6, 7 };
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, NumVerts, NumTris, &Indices,
sizeof(Indices[0]), &Verts, sizeof(Verts[0]));
}
void FSteamVRHMD::DrawDistortionMesh_RenderThread(struct FRenderingCompositePassContext& Context, const FSceneView& View, const FIntPoint& TextureSize)
{
float ClipSpaceQuadZ = 0.0f;
FMatrix QuadTexTransform = FMatrix::Identity;
FMatrix QuadPosTransform = FMatrix::Identity;
const FIntRect SrcRect = View.ViewRect;
FRHICommandListImmediate& RHICmdList = Context.RHICmdList;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint ViewportSize = ViewFamily.RenderTarget->GetSizeXY();
RHICmdList.SetViewport(0, 0, 0.0f, ViewportSize.X, ViewportSize.Y, 1.0f);
FSteamVRDistortionMesh& CurMesh = DistortionMesh[(View.StereoPass == eSSP_LEFT_EYE) ? 0 : 1];
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, CurMesh.NumVerts, CurMesh.NumTriangles, CurMesh.Indices, sizeof(CurMesh.Indices[0]), CurMesh.Verts, sizeof(CurMesh.Verts[0]));
}
void DrawTransformedRectangle(
FRHICommandListImmediate& RHICmdList,
float X,
float Y,
float SizeX,
float SizeY,
const FMatrix& PosTransform,
float U,
float V,
float SizeU,
float SizeV,
const FMatrix& TexTransform,
FIntPoint TargetSize,
FIntPoint TextureSize
)
{
float ClipSpaceQuadZ = 0.0f;
// we don't do the triangle optimization as this case is rare for the DrawTransformedRectangle case
FFilterVertex Vertices[4];
Vertices[0].Position = PosTransform.TransformFVector4(FVector4(X, Y, ClipSpaceQuadZ, 1));
Vertices[1].Position = PosTransform.TransformFVector4(FVector4(X + SizeX, Y, ClipSpaceQuadZ, 1));
Vertices[2].Position = PosTransform.TransformFVector4(FVector4(X, Y + SizeY, ClipSpaceQuadZ, 1));
Vertices[3].Position = PosTransform.TransformFVector4(FVector4(X + SizeX, Y + SizeY, ClipSpaceQuadZ, 1));
Vertices[0].UV = FVector2D(TexTransform.TransformFVector4(FVector(U, V, 0)));
Vertices[1].UV = FVector2D(TexTransform.TransformFVector4(FVector(U + SizeU, V, 0)));
Vertices[2].UV = FVector2D(TexTransform.TransformFVector4(FVector(U, V + SizeV, 0)));
Vertices[3].UV = FVector2D(TexTransform.TransformFVector4(FVector(U + SizeU, V + SizeV, 0)));
for (int32 VertexIndex = 0; VertexIndex < 4; VertexIndex++)
{
Vertices[VertexIndex].Position.X = -1.0f + 2.0f * (Vertices[VertexIndex].Position.X) / (float)TargetSize.X;
Vertices[VertexIndex].Position.Y = (+1.0f - 2.0f * (Vertices[VertexIndex].Position.Y) / (float)TargetSize.Y) * GProjectionSignY;
Vertices[VertexIndex].UV.X = Vertices[VertexIndex].UV.X / (float)TextureSize.X;
Vertices[VertexIndex].UV.Y = Vertices[VertexIndex].UV.Y / (float)TextureSize.Y;
}
static const uint16 Indices[] = { 0, 1, 3, 0, 3, 2 };
DrawIndexedPrimitiveUP(RHICmdList, PT_TriangleList, 0, 4, 2, Indices, sizeof(Indices[0]), Vertices, sizeof(Vertices[0]));
}
static void DrawOcclusionMesh(FRHICommandList& RHICmdList, EStereoscopicPass StereoPass, const FHMDViewMesh MeshAssets[])
{
check(IsInRenderingThread());
check(StereoPass != eSSP_FULL);
const uint32 MeshIndex = (StereoPass == eSSP_LEFT_EYE) ? 0 : 1;
const FHMDViewMesh& Mesh = MeshAssets[MeshIndex];
check(Mesh.IsValid());
DrawIndexedPrimitiveUP(
RHICmdList,
PT_TriangleList,
0,
Mesh.NumVertices,
Mesh.NumTriangles,
Mesh.pIndices,
sizeof(Mesh.pIndices[0]),
Mesh.pVertices,
sizeof(Mesh.pVertices[0])
);
}
void FGoogleVRHMD::DrawDistortionMesh_RenderThread(struct FRenderingCompositePassContext& Context, const FIntPoint& TextureSize)
{
const FSceneView& View = Context.View;
FRHICommandListImmediate& RHICmdList = Context.RHICmdList;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint ViewportSize = ViewFamily.RenderTarget->GetSizeXY();
#if GOOGLEVRHMD_SUPPORTED_PLATFORMS
if(View.StereoPass == eSSP_LEFT_EYE)
{
RHICmdList.SetViewport(0, 0, 0.0f, ViewportSize.X / 2, ViewportSize.Y, 1.0f);
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, NumVerts, NumTris, DistortionMeshIndices,
sizeof(DistortionMeshIndices[0]), DistortionMeshVerticesLeftEye, sizeof(DistortionMeshVerticesLeftEye[0]));
}
else
{
RHICmdList.SetViewport(ViewportSize.X / 2, 0, 0.0f, ViewportSize.X, ViewportSize.Y, 1.0f);
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, NumVerts, NumTris, DistortionMeshIndices,
sizeof(DistortionMeshIndices[0]), DistortionMeshVerticesRightEye, sizeof(DistortionMeshVerticesRightEye[0]));
}
#else
if(GetPreviewViewerType() == EVP_None)
{
RHICmdList.SetViewport(0, 0, 0.0f, ViewportSize.X, ViewportSize.Y, 1.0f);
static const uint32 LocalNumVerts = 8;
static const uint32 LocalNumTris = 4;
static const FDistortionVertex Verts[8] =
{
// left eye
{ FVector2D(-0.9f, -0.9f), FVector2D(0.0f, 1.0f), FVector2D(0.0f, 1.0f), FVector2D(0.0f, 1.0f), 1.0f, 0.0f },
{ FVector2D(-0.1f, -0.9f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), 1.0f, 0.0f },
{ FVector2D(-0.1f, 0.9f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), 1.0f, 0.0f },
{ FVector2D(-0.9f, 0.9f), FVector2D(0.0f, 0.0f), FVector2D(0.0f, 0.0f), FVector2D(0.0f, 0.0f), 1.0f, 0.0f },
// right eye
{ FVector2D(0.1f, -0.9f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), FVector2D(0.5f, 1.0f), 1.0f, 0.0f },
{ FVector2D(0.9f, -0.9f), FVector2D(1.0f, 1.0f), FVector2D(1.0f, 1.0f), FVector2D(1.0f, 1.0f), 1.0f, 0.0f },
{ FVector2D(0.9f, 0.9f), FVector2D(1.0f, 0.0f), FVector2D(1.0f, 0.0f), FVector2D(1.0f, 0.0f), 1.0f, 0.0f },
{ FVector2D(0.1f, 0.9f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), FVector2D(0.5f, 0.0f), 1.0f, 0.0f },
};
static const uint16 Indices[12] = { /*Left*/ 0, 1, 2, 0, 2, 3, /*Right*/ 4, 5, 6, 4, 6, 7 };
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, LocalNumVerts, LocalNumTris, &Indices,
sizeof(Indices[0]), &Verts, sizeof(Verts[0]));
}
else
{
// Indices are generated, mesh is stored in GoogleVRHMDViewerPreviews.h/cpp
if(View.StereoPass == eSSP_LEFT_EYE)
{
RHICmdList.SetViewport(0, 0, 0.0f, ViewportSize.X / 2, ViewportSize.Y, 1.0f);
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, GetPreviewViewerNumVertices(eSSP_LEFT_EYE), NumTris, DistortionMeshIndices,
sizeof(DistortionMeshIndices[0]), GetPreviewViewerVertices(eSSP_LEFT_EYE), sizeof(GetPreviewViewerVertices(eSSP_LEFT_EYE)[0]));
}
else
{
RHICmdList.SetViewport(ViewportSize.X / 2, 0, 0.0f, ViewportSize.X, ViewportSize.Y, 1.0f);
DrawIndexedPrimitiveUP(Context.RHICmdList, PT_TriangleList, 0, GetPreviewViewerNumVertices(eSSP_RIGHT_EYE), NumTris, DistortionMeshIndices,
sizeof(DistortionMeshIndices[0]), GetPreviewViewerVertices(eSSP_RIGHT_EYE), sizeof(GetPreviewViewerVertices(eSSP_RIGHT_EYE)[0]));
}
}
#endif
}
bool FDeferredShadingSceneRenderer::RenderFog(FRHICommandListImmediate& RHICmdList, FLightShaftsOutput LightShaftsOutput)
{
if (Scene->ExponentialFogs.Num() > 0)
{
SCOPED_DRAW_EVENT(RHICmdList, Fog);
static const FVector2D Vertices[4] =
{
FVector2D(-1,-1),
FVector2D(-1,+1),
FVector2D(+1,+1),
FVector2D(+1,-1),
};
static const uint16 Indices[6] =
{
0, 1, 2,
0, 2, 3
};
GSceneRenderTargets.BeginRenderingSceneColor(RHICmdList, ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilWrite);
for(int32 ViewIndex = 0;ViewIndex < Views.Num();ViewIndex++)
{
const FViewInfo& View = Views[ViewIndex];
if (View.IsPerspectiveProjection() == false)
{
continue; // Do not render exponential fog in orthographic views.
}
// Set the device viewport for the view.
RHICmdList.SetViewport(View.ViewRect.Min.X, View.ViewRect.Min.Y, 0.0f, View.ViewRect.Max.X, View.ViewRect.Max.Y, 1.0f);
RHICmdList.SetRasterizerState(TStaticRasterizerState<FM_Solid, CM_None>::GetRHI());
// disable alpha writes in order to preserve scene depth values on PC
RHICmdList.SetBlendState(TStaticBlendState<CW_RGB, BO_Add, BF_One, BF_SourceAlpha>::GetRHI());
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
SetFogShaders(RHICmdList, Scene,View,LightShaftsOutput);
// Draw a quad covering the view.
DrawIndexedPrimitiveUP(
RHICmdList,
PT_TriangleList,
0,
ARRAY_COUNT(Vertices),
2,
Indices,
sizeof(Indices[0]),
Vertices,
sizeof(Vertices[0])
);
}
//no need to resolve since we used alpha blending
GSceneRenderTargets.FinishRenderingSceneColor(RHICmdList, false);
return true;
}
return false;
}
