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WinRT: made the fullscreen display be backed by a texture

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This commit is contained in:
David Ludwig
2012-11-21 17:07:48 -05:00
parent f2315e5a87
commit c7f3a001de
4 changed files with 93 additions and 6 deletions
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85
src/video/windowsrt/SDL_winrtrenderer.cpp
View File

@@ -33,6 +33,7 @@ void SDL_winrtrenderer::CreateDeviceResources()
{
{ "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 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 24, D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
DX::ThrowIfFailed(
@@ -60,10 +61,10 @@ void SDL_winrtrenderer::CreateDeviceResources()
auto createCubeTask = (createPSTask && createVSTask).then([this] () {
VertexPositionColor cubeVertices[] =
{
{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)},
{XMFLOAT3(-1.0f, -1.0f, 0.0f), XMFLOAT3(1.0f, 0.0f, 0.0f), XMFLOAT2(0.0f, 0.0f)},
{XMFLOAT3(-1.0f, 1.0f, 0.0f), XMFLOAT3(0.0f, 1.0f, 0.0f), XMFLOAT2(0.0f, 1.0f)},
{XMFLOAT3(1.0f, -1.0f, 0.0f), XMFLOAT3(0.0f, 0.0f, 1.0f), XMFLOAT2(1.0f, 0.0f)},
{XMFLOAT3(1.0f, 1.0f, 0.0f), XMFLOAT3(1.0f, 1.0f, 1.0f), XMFLOAT2(1.0f, 1.0f)},
};
m_vertexCount = ARRAYSIZE(cubeVertices);
@@ -82,7 +83,77 @@ void SDL_winrtrenderer::CreateDeviceResources()
);
});
createCubeTask.then([this] () {
auto createMainTextureTask = createCubeTask.then([this] () {
D3D11_TEXTURE2D_DESC textureDesc = {0};
textureDesc.Width = (int)m_windowBounds.Width;
textureDesc.Height = (int)m_windowBounds.Height;
textureDesc.MipLevels = 1;
textureDesc.ArraySize = 1;
textureDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
textureDesc.SampleDesc.Count = 1;
textureDesc.SampleDesc.Quality = 0;
textureDesc.Usage = D3D11_USAGE_DYNAMIC;
textureDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
textureDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
textureDesc.MiscFlags = 0;
int numPixels = (int)m_windowBounds.Width * (int)m_windowBounds.Height;
std::vector<uint8> initialTexturePixels(numPixels * 4);
for (int i = 0; i < (numPixels * 4); i += 4) {
initialTexturePixels[i+0] = 0xFF;
initialTexturePixels[i+1] = 0x00;
initialTexturePixels[i+2] = 0x00;
initialTexturePixels[i+3] = 0xFF;
}
D3D11_SUBRESOURCE_DATA initialTextureData = {0};
initialTextureData.pSysMem = (void *)&(initialTexturePixels[0]);
initialTextureData.SysMemPitch = (int)m_windowBounds.Width * 4;
initialTextureData.SysMemSlicePitch = numPixels * 4;
DX::ThrowIfFailed(
m_d3dDevice->CreateTexture2D(
&textureDesc,
&initialTextureData,
&m_mainTexture
)
);
D3D11_SHADER_RESOURCE_VIEW_DESC resourceViewDesc;
resourceViewDesc.Format = textureDesc.Format;
resourceViewDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
resourceViewDesc.Texture2D.MostDetailedMip = 0;
resourceViewDesc.Texture2D.MipLevels = textureDesc.MipLevels;
DX::ThrowIfFailed(
m_d3dDevice->CreateShaderResourceView(
m_mainTexture.Get(),
&resourceViewDesc,
&m_mainTextureResourceView)
);
});
auto createMainSamplerTask = createMainTextureTask.then([this] () {
D3D11_SAMPLER_DESC samplerDesc;
samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;
samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;
samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;
samplerDesc.MipLODBias = 0.0f;
samplerDesc.MaxAnisotropy = 1;
samplerDesc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
samplerDesc.BorderColor[0] = 0.0f;
samplerDesc.BorderColor[1] = 0.0f;
samplerDesc.BorderColor[2] = 0.0f;
samplerDesc.BorderColor[3] = 0.0f;
samplerDesc.MinLOD = 0.0f;
samplerDesc.MaxLOD = D3D11_FLOAT32_MAX;
DX::ThrowIfFailed(
m_d3dDevice->CreateSamplerState(
&samplerDesc,
&m_mainSampler
)
);
});
createMainSamplerTask.then([this] () {
m_loadingComplete = true;
});
}
@@ -140,5 +211,9 @@ void SDL_winrtrenderer::Render()
0
);
m_d3dContext->PSSetShaderResources(0, 1, m_mainTextureResourceView.GetAddressOf());
m_d3dContext->PSSetSamplers(0, 1, m_mainSampler.GetAddressOf());
m_d3dContext->Draw(4, 0);
}

4
src/video/windowsrt/SDL_winrtrenderer.h
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@@ -6,6 +6,7 @@ struct VertexPositionColor
{
DirectX::XMFLOAT3 pos;
DirectX::XMFLOAT3 color;
DirectX::XMFLOAT2 tex;
};
// This class renders a simple spinning cube.
@@ -25,6 +26,9 @@ private:
Microsoft::WRL::ComPtr<ID3D11Buffer> m_vertexBuffer;
Microsoft::WRL::ComPtr<ID3D11VertexShader> m_vertexShader;
Microsoft::WRL::ComPtr<ID3D11PixelShader> m_pixelShader;
Microsoft::WRL::ComPtr<ID3D11Texture2D> m_mainTexture;
Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> m_mainTextureResourceView;
Microsoft::WRL::ComPtr<ID3D11SamplerState> m_mainSampler;
uint32 m_vertexCount;
};

7
src/video/windowsrt/SimplePixelShader.hlsl
View File

@@ -1,10 +1,15 @@
Texture2D theTexture : register(t0);
SamplerState theSampler : register(s0);
struct PixelShaderInput
{
float4 pos : SV_POSITION;
float3 color : COLOR0;
float2 tex : TEXCOORD0;
};
float4 main(PixelShaderInput input) : SV_TARGET
{
return float4(input.color,1.0f);
//return float4(input.color,1.0f);
return theTexture.Sample(theSampler, input.tex);
}

3
src/video/windowsrt/SimpleVertexShader.hlsl
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@@ -5,12 +5,14 @@ struct VertexShaderInput
{
float3 pos : POSITION;
float3 color : COLOR0;
float2 tex : TEXCOORD0;
};
struct VertexShaderOutput
{
float4 pos : SV_POSITION;
float3 color : COLOR0;
float2 tex : TEXCOORD0;
};
VertexShaderOutput main(VertexShaderInput input)
@@ -18,5 +20,6 @@ VertexShaderOutput main(VertexShaderInput input)
VertexShaderOutput output;
output.pos = float4(input.pos, 1.0f);
output.color = input.color;
output.tex = input.tex;
return output;
}