This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_winrtrenderer.cpp
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#include "SDLmain_WinRT_common.h"
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#include "SDL_winrtrenderer.h"
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using namespace DirectX;
using namespace Microsoft::WRL;
using namespace Windows::Foundation;
using namespace Windows::UI::Core;
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SDL_winrtrenderer::SDL_winrtrenderer() :
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m_loadingComplete(false),
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m_vertexCount(0)
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void SDL_winrtrenderer::CreateDeviceResources()
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{
Direct3DBase::CreateDeviceResources();
auto loadVSTask = DX::ReadDataAsync("SimpleVertexShader.cso");
auto loadPSTask = DX::ReadDataAsync("SimplePixelShader.cso");
auto createVSTask = loadVSTask.then([this](Platform::Array<byte>^ fileData) {
DX::ThrowIfFailed(
m_d3dDevice->CreateVertexShader(
fileData->Data,
fileData->Length,
nullptr,
&m_vertexShader
)
);
const D3D11_INPUT_ELEMENT_DESC vertexDesc[] =
{
{ "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "COLOR", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
DX::ThrowIfFailed(
m_d3dDevice->CreateInputLayout(
vertexDesc,
ARRAYSIZE(vertexDesc),
fileData->Data,
fileData->Length,
&m_inputLayout
)
);
});
auto createPSTask = loadPSTask.then([this](Platform::Array<byte>^ fileData) {
DX::ThrowIfFailed(
m_d3dDevice->CreatePixelShader(
fileData->Data,
fileData->Length,
nullptr,
&m_pixelShader
)
);
});
auto createCubeTask = (createPSTask && createVSTask).then([this] () {
VertexPositionColor cubeVertices[] =
{
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{XMFLOAT3(-1.0f, -1.0f, 0.0f), XMFLOAT3(1.0f, 0.0f, 0.0f)},
{XMFLOAT3(-1.0f, 1.0f, 0.0f), XMFLOAT3(0.0f, 1.0f, 0.0f)},
{XMFLOAT3(1.0f, -1.0f, 0.0f), XMFLOAT3(0.0f, 0.0f, 1.0f)},
{XMFLOAT3(1.0f, 1.0f, 0.0f), XMFLOAT3(1.0f, 1.0f, 1.0f)},
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m_vertexCount = ARRAYSIZE(cubeVertices);
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D3D11_SUBRESOURCE_DATA vertexBufferData = {0};
vertexBufferData.pSysMem = cubeVertices;
vertexBufferData.SysMemPitch = 0;
vertexBufferData.SysMemSlicePitch = 0;
CD3D11_BUFFER_DESC vertexBufferDesc(sizeof(cubeVertices), D3D11_BIND_VERTEX_BUFFER);
DX::ThrowIfFailed(
m_d3dDevice->CreateBuffer(
&vertexBufferDesc,
&vertexBufferData,
&m_vertexBuffer
)
);
});
createCubeTask.then([this] () {
m_loadingComplete = true;
});
}
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void SDL_winrtrenderer::Render()
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{
const float midnightBlue[] = { 0.098f, 0.098f, 0.439f, 1.000f };
m_d3dContext->ClearRenderTargetView(
m_renderTargetView.Get(),
midnightBlue
);
m_d3dContext->ClearDepthStencilView(
m_depthStencilView.Get(),
D3D11_CLEAR_DEPTH,
1.0f,
0
);
// Only draw the cube once it is loaded (loading is asynchronous).
if (!m_loadingComplete)
{
return;
}
m_d3dContext->OMSetRenderTargets(
1,
m_renderTargetView.GetAddressOf(),
m_depthStencilView.Get()
);
UINT stride = sizeof(VertexPositionColor);
UINT offset = 0;
m_d3dContext->IASetVertexBuffers(
0,
1,
m_vertexBuffer.GetAddressOf(),
&stride,
&offset
);
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m_d3dContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
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m_d3dContext->IASetInputLayout(m_inputLayout.Get());
m_d3dContext->VSSetShader(
m_vertexShader.Get(),
nullptr,
0
);
m_d3dContext->PSSetShader(
m_pixelShader.Get(),
nullptr,
0
);
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m_d3dContext->Draw(4, 0);