本文整理汇总了C++中FIntRect::IsEmpty方法的典型用法代码示例。如果您正苦于以下问题：C++ FIntRect::IsEmpty方法的具体用法？C++ FIntRect::IsEmpty怎么用？C++ FIntRect::IsEmpty使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类FIntRect的用法示例。
在下文中一共展示了FIntRect::IsEmpty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CopyTexture_RenderThread
void FOculusRiftHMD::CopyTexture_RenderThread(FRHICommandListImmediate& RHICmdList, FTexture2DRHIParamRef DstTexture, FTexture2DRHIParamRef SrcTexture,
FIntRect DstRect, FIntRect SrcRect) const
{
check(IsInRenderingThread());
if (DstRect.IsEmpty())
{
DstRect = FIntRect(0, 0, DstTexture->GetSizeX(), DstTexture->GetSizeY());
}
const uint32 ViewportWidth = DstRect.Width();
const uint32 ViewportHeight = DstRect.Height();
const FIntPoint TargetSize(ViewportWidth, ViewportHeight);
const float SrcTextureWidth = SrcTexture->GetSizeX();
const float SrcTextureHeight = SrcTexture->GetSizeY();
float U = 0.f, V = 0.f, USize = 1.f, VSize = 1.f;
if (!SrcRect.IsEmpty())
{
U = SrcRect.Min.X / SrcTextureWidth;
V = SrcRect.Min.Y / SrcTextureHeight;
USize = SrcRect.Width() / SrcTextureWidth;
VSize = SrcRect.Height() / SrcTextureHeight;
}
SetRenderTarget(RHICmdList, DstTexture, FTextureRHIRef());
RHICmdList.SetViewport(DstRect.Min.X, DstRect.Min.Y, 0, DstRect.Max.X, DstRect.Max.Y, 1.0f);
RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
const auto FeatureLevel = GMaxRHIFeatureLevel;
auto ShaderMap = GetGlobalShaderMap(FeatureLevel);
TShaderMapRef<FScreenVS> VertexShader(ShaderMap);
TShaderMapRef<FScreenPS> PixelShader(ShaderMap);
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(RHICmdList, FeatureLevel, BoundShaderState, RendererModule->GetFilterVertexDeclaration().VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(RHICmdList, TStaticSamplerState<SF_Bilinear>::GetRHI(), SrcTexture);
RendererModule->DrawRectangle(
RHICmdList,
0, 0,
ViewportWidth, ViewportHeight,
U, V,
USize, VSize,
TargetSize,
FIntPoint(1, 1),
*VertexShader,
EDRF_Default);
}