KIHX_API void kiRenderToBuffer( void* buffer, int width, int height, int bpp )
{
if ( buffer == nullptr )
{
return;
}
__UNDONE( temporal testing code );
// Create color and depth stencil buffers.
ColorFormat colorFormat = kih::GetSuitableColorFormatFromBpp( bpp );
static std::shared_ptr<Texture> renderTarget = Texture::Create( width, height, colorFormat, buffer );
static std::shared_ptr<Texture> depthStencil = Texture::Create( width, height, ColorFormat::D32F, NULL );
static std::shared_ptr<UnorderedAccessView<OutputMergerInputStream>> omUAV = std::make_shared<UnorderedAccessView<OutputMergerInputStream>>( width * height * 2 );
// Create rendering contexts as many of Thread::HardwareConcurrency.
const int Concurrency = 8; // HACK
static std::array<std::shared_ptr<RenderingContext>, Concurrency> contexts;
if ( contexts[0] == nullptr )
{
int index = 0;
LoopUnroll<Concurrency>::Work(
[&index]()
{
auto context = RenderingDevice::GetInstance()->CreateRenderingContext();
context->SetViewport( 0, 0, static_cast<unsigned short>( renderTarget->Width() ), static_cast<unsigned short>( renderTarget->Height() ) );
context->SetFixedPipelineMode( false );
context->SetRenderTarget( renderTarget, 0 );
context->SetDepthStencil( depthStencil );
contexts[index++] = context;
}
);
}
auto context = contexts[0];
context->Clear( 0, 0, 0, 255 );
context->SetUnorderedAccessView( nullptr );
// Draw the world.
const Matrix4& matWorld = RenderingDevice::GetInstance()->GetWorldMatrix();
// Grid arragement
if ( grid_scene.Bool() )
{
// threading or not
if ( concurrency.Int() <= 1 )
{
DrawGridScene( context, matWorld );
}
else
{
// Copy array contexts to vector one.
StlVector<std::shared_ptr<RenderingContext>> concurrencyContexts;
concurrencyContexts.resize( concurrency.Int() - 1 ); // the other thread is for resolve.
for ( size_t i = 0; i < concurrencyContexts.size(); ++i )
{
contexts[i]->SetUnorderedAccessView( omUAV );
concurrencyContexts[i] = contexts[i];
}
DrawGridSceneInParallel( concurrencyContexts, matWorld );
}
}
else
{
context->GetSharedConstantBuffer().SetMatrix4( ConstantBuffer::WorldMatrix, matWorld );
context->GetSharedConstantBuffer().SetVector4( ConstantBuffer::DiffuseColor, Vector4( 1.0f, 1.0f, 1.0f, 1.0f ) );
context->Draw( GetMeshes()[0] );
}
}
