代码之家  ›  专栏  ›  技术社区  ›  Akshit Verma

DirectX 11渲染到纹理问题

directx-11 directx
  •  0
  • Akshit Verma  · 技术社区  · 8 年前

    在我的代码中,我制作了两个矩形,

    矩形1:在纹理上渲染。

    矩形2:在后缓冲区上渲染。

    我正在尝试进行可编程混合,因此需要访问像素着色器中的目标像素。

    在我的代码中,

    我正在创建如下纹理: 

    d3d11Device->CreateTexture2D(&textureDesc, NULL, &renderTargetTextureMap);

    在此之后,我将创建纹理的渲染目标视图。 

      d3d11Device->CreateRenderTargetView(renderTargetTextureMap, &renderTargetViewDesc, &renderTargetViewMap);

    在此之后,我声明顶点和像素着色器。

    然后在我的抽签中,

    我正在做以下事情: 

    float bgColor[4] = {0.0f, 0.0f,0.0f, 1.0f };
d3d11DevCon->ClearRenderTargetView(renderTargetViewMap, bgColor);

float bgColor2[4] = { 0.0f, 1.0f, 0.0f, 1.0f };

////////////////////////////////////////////////Buffer 1///////////////////////////////////////////////////////////////
//Set the vertex buffer
UINT stride = sizeof(Vertex);
UINT offset = 0;

///////////////////////////////////////////////////////////Buffer 2//////////////////////////////////////////////////////////////////

d3d11DevCon->IASetIndexBuffer(d2dIndexBuffer, DXGI_FORMAT_R32_UINT, 0);
d3d11DevCon->IASetVertexBuffers(0, 1, &triangleVertBuffer, &stride, &offset);
////Draw the triangle
d3d11DevCon->DrawIndexed(6, 0, 0);

    现在,我将渲染到我的backbuffer:

    //////////////////////////////////////////// 

    d3d11DevCon->OMSetRenderTargets(1, &renderTargetView, NULL);
d3d11DevCon->PSSetShaderResources(0, 1, &shaderResourceViewMap);
//d3d11DevCon->ClearRenderTargetView(renderTargetView, bgColor2);

d3d11DevCon->IASetIndexBuffer(d2dIndexBuffer2, DXGI_FORMAT_R32_UINT, 0);
d3d11DevCon->IASetVertexBuffers(0, 1, &triangleVertBuffer2, &stride, &offset);

////Draw the triangle
d3d11DevCon->DrawIndexed(6, 0, 0);

//Present the backbuffer to the screen
SwapChain->Present(0, 0);

    所以,我的渲染就是这样进行的。

    问题面:

    在我的像素着色器中, 

    VS_OUTPUT VS(float4 inPos : POSITION, float4 inColor : COLOR)
{
    VS_OUTPUT output;

    output.Pos = inPos;
    output.Color = inColor;

    return output;
}

float4 PS(VS_OUTPUT input) : SV_TARGET
{
    float2 temp;
    temp = input.Pos;
    float4 diffuse = ObjTexture.Sample(ObjSamplerState,0.5+0.5*temp);

    return input.Color + diffuse;
}

    在这里,漫反射等于我在渲染到纹理时设置的bgcolor 

    float bgColor[4] = {0.0f, 0.0f,0.0f, 1.0f };
d3d11DevCon->ClearRenderTargetView(renderTargetViewMap, bgColor);

    如何访问渲染到纹理时绘制的矩形像素。

    这是问题图片 Issue Image

    预期结果

    Desired Result

    着色器文件:效果。外汇 

    struct VS_OUTPUT
{
    float4 Pos : SV_POSITION;
    float4 Color : COLOR;
};

Texture2D ObjTexture;
SamplerState ObjSamplerState;


VS_OUTPUT VS(float4 inPos : POSITION, float4 inColor : COLOR)
{
    VS_OUTPUT output;

    output.Pos = inPos;
    output.Color = inColor;

    return output;
}

float4 PS(VS_OUTPUT input) : SV_TARGET
{
    float2 temp;
    temp = input.Pos;
    float4 diffuse = ObjTexture.Sample(ObjSamplerState,0.5+0.5*temp);

    return input.Color + diffuse;
}

    编辑-1:

    Modified Issue Case

    修改代码:

    主要的清洁石油产品 

    //Include and link appropriate libraries and headers//
#pragma comment(lib, "d3d11.lib")
#pragma comment(lib, "d3dx11.lib")
#pragma comment(lib, "d3dx10.lib")

#include <windows.h>
#include <d3d11.h>
#include <d3dx11.h>
#include <d3dx10.h>
#include <xnamath.h>




//Global Declarations - Interfaces//
IDXGISwapChain* SwapChain;
ID3D11Device* d3d11Device;
ID3D11DeviceContext* d3d11DevCon;
ID3D11RenderTargetView* renderTargetView;

ID3D11Buffer* triangleVertBuffer;
ID3D11Buffer* triangleVertBuffer2;
ID3D11VertexShader* VS;
ID3D11PixelShader* PS;
ID3D10Blob* VS_Buffer;
ID3D10Blob* PS_Buffer;
ID3D11InputLayout* vertLayout;


XMMATRIX mapView;
XMMATRIX mapProjection;

XMVECTOR DefaultForward = XMVectorSet(0.0f, 0.0f, 1.0f, 0.0f);


//Global Declarations - Others//
LPCTSTR WndClassName = L"firstwindow";
HWND hwnd = NULL;
HRESULT hr;

const int Width = 800;
const int Height = 600;

bool InitializeDirect3d11App(HINSTANCE hInstance)
{
    //Describe our Buffer
    DXGI_MODE_DESC bufferDesc;

    ZeroMemory(&bufferDesc, sizeof(DXGI_MODE_DESC));

    bufferDesc.Width = Width;
    bufferDesc.Height = Height;
    bufferDesc.RefreshRate.Numerator = 60;
    bufferDesc.RefreshRate.Denominator = 1;
    bufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    bufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
    bufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;

    //Describe our SwapChain
    DXGI_SWAP_CHAIN_DESC swapChainDesc;

    ZeroMemory(&swapChainDesc, sizeof(DXGI_SWAP_CHAIN_DESC));

    swapChainDesc.BufferDesc = bufferDesc;
    swapChainDesc.SampleDesc.Count = 1;
    swapChainDesc.SampleDesc.Quality = 0;
    swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    swapChainDesc.BufferCount = 1;
    swapChainDesc.OutputWindow = hwnd;
    swapChainDesc.Windowed = TRUE;
    swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;


    //Create our SwapChain
    hr = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, NULL, NULL, NULL,
        D3D11_SDK_VERSION, &swapChainDesc, &SwapChain, &d3d11Device, NULL, &d3d11DevCon);

    //Create our BackBuffer
    ID3D11Texture2D* BackBuffer;
    hr = SwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (void**)&BackBuffer);

    //Create our Render Target
    hr = d3d11Device->CreateRenderTargetView(BackBuffer, NULL, &renderTargetView);
    BackBuffer->Release();
    ////////////////////////////////////////////////////////////////////////EXPERIMENT AREA//////////////////////////////////////////////////////////////////////////////////////
    ZeroMemory(&textureDesc, sizeof(textureDesc));

    // Setup the texture description.
    // We will have our map be a square
    // We will need to have this texture bound as a render target AND a shader resource
    textureDesc.Width = Width/ 3.9729999999999999999999999999999;
    textureDesc.Height = Height/3.9729999999999999999999999999999;
    textureDesc.MipLevels = 1;
    textureDesc.ArraySize = 1;
    textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    textureDesc.SampleDesc.Count = 1;
    textureDesc.SampleDesc.Quality = 0;
    textureDesc.Usage = D3D11_USAGE_DEFAULT;
    textureDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
    textureDesc.CPUAccessFlags = 0;
    textureDesc.MiscFlags = 0;

    d3d11Device->CreateTexture2D(&textureDesc, NULL, &renderTargetTextureMap);

    // Setup the description of the render target view.
    renderTargetViewDesc.Format = textureDesc.Format;
    renderTargetViewDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
    renderTargetViewDesc.Texture2D.MipSlice = 0;

    // Create the render target view.
    d3d11Device->CreateRenderTargetView(renderTargetTextureMap, &renderTargetViewDesc, &renderTargetViewMap);



    /////////////////////// Map's Shader Resource View
    // Setup the description of the shader resource view.
    shaderResourceViewDesc.Format = textureDesc.Format;
    shaderResourceViewDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
    shaderResourceViewDesc.Texture2D.MostDetailedMip = 0;
    shaderResourceViewDesc.Texture2D.MipLevels = 1;

    // Create the shader resource view.
    d3d11Device->CreateShaderResourceView(renderTargetTextureMap, &shaderResourceViewDesc, &shaderResourceViewMap);


    d3d11DevCon->OMSetRenderTargets(1, &renderTargetViewMap, NULL);
    d3d11DevCon->PSSetShaderResources(0, 1, &shaderResourceViewMap);

    return true;
}

void CleanUp()
{
    //Release the COM Objects we created
    SwapChain->Release();
    d3d11Device->Release();
    d3d11DevCon->Release();
    renderTargetView->Release();
    triangleVertBuffer->Release();
    VS->Release();
    PS->Release();
    VS_Buffer->Release();
    PS_Buffer->Release();
    vertLayout->Release();
}

bool InitScene()
{
    //Compile Shaders from shader file
    hr = D3DX11CompileFromFile(L"Effect.fx", 0, 0, "VS", "vs_5_0", 0, 0, 0, &VS_Buffer, 0, 0);
    hr = D3DX11CompileFromFile(L"Effect.fx", 0, 0, "PS", "ps_5_0", 0, 0, 0, &PS_Buffer, 0, 0);

    //Create the Shader Objects
    hr = d3d11Device->CreateVertexShader(VS_Buffer->GetBufferPointer(), VS_Buffer->GetBufferSize(), NULL, &VS);
    hr = d3d11Device->CreatePixelShader(PS_Buffer->GetBufferPointer(), PS_Buffer->GetBufferSize(), NULL, &PS);

    //Set Vertex and Pixel Shaders
    d3d11DevCon->VSSetShader(VS, 0, 0);
    d3d11DevCon->PSSetShader(PS, 0, 0);


    //Create the Input Layout
    hr = d3d11Device->CreateInputLayout(layout, numElements, VS_Buffer->GetBufferPointer(),
        VS_Buffer->GetBufferSize(), &vertLayout);

    //Set the Input Layout
    d3d11DevCon->IASetInputLayout(vertLayout);

    //Set Primitive Topology
    d3d11DevCon->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);

    //Create the Viewport
    D3D11_VIEWPORT viewport;
    ZeroMemory(&viewport, sizeof(D3D11_VIEWPORT));

    viewport.TopLeftX = 0;
    viewport.TopLeftY = 0;
    viewport.Width = 800;
    viewport.Height = 600;

    //Set the Viewport
    d3d11DevCon->RSSetViewports(1, &viewport);



    ////////////////***********************First  Texture Vertex Buffer *******************************/////////////////////////////
    //Create the vertex buffer

    Vertex v[] =
    {
        Vertex(-0.5f, -0.5f, 0.0f, 1.0f,0.0f,0.0f, 1.0f),
        Vertex(-0.5f,  0.5f, 0.0f, 1.0f,0.0f,0.0f, 1.0f),
        Vertex(0.5f,  0.5f, 0.0f,   1.0f, 0.0f,0.0f, 1.0f),
        Vertex(0.5f, -0.5f, 0.0f,   1.0f,0.0f, 0.0f, 1.0f),
    };

    DWORD indices[] = {
        // Front Face
        0,  1,  3,
        1,  2,  3,
    };


    D3D11_BUFFER_DESC indexBufferDesc;
    ZeroMemory(&indexBufferDesc, sizeof(indexBufferDesc));

    indexBufferDesc.Usage = D3D11_USAGE_DEFAULT;
    indexBufferDesc.ByteWidth = sizeof(DWORD) * 2 * 3;
    indexBufferDesc.BindFlags = D3D11_BIND_INDEX_BUFFER;
    indexBufferDesc.CPUAccessFlags = 0;
    indexBufferDesc.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA iinitData;

    iinitData.pSysMem = indices;
    d3d11Device->CreateBuffer(&indexBufferDesc, &iinitData, &d2dIndexBuffer);


    D3D11_BUFFER_DESC vertexBufferDesc;
    ZeroMemory(&vertexBufferDesc, sizeof(vertexBufferDesc));

    vertexBufferDesc.Usage = D3D11_USAGE_DEFAULT;
    vertexBufferDesc.ByteWidth = sizeof(Vertex) * 4;
    vertexBufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
    vertexBufferDesc.CPUAccessFlags = 0;
    vertexBufferDesc.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA vertexBufferData;

    ZeroMemory(&vertexBufferData, sizeof(vertexBufferData));
    vertexBufferData.pSysMem = v;
    hr = d3d11Device->CreateBuffer(&vertexBufferDesc, &vertexBufferData, &triangleVertBuffer);




    ////////////////////////////////////////////////////// Second Vertex.


     Vertex v2[] = {
        // positions          // colors           // texture coords
        Vertex(1.0f, 1.0f, 0.0f,0.0f,1.0f,0.0f,1.0f),   // top right
        Vertex(1.0f,0.0f, 0.0f,0.0f,1.0f,0.0f,1.0f),   // bottom right
        Vertex(0.0f,0.0f, 0.0f,0.0f,1.0f,0.0f,1.0f),   // bottom left
        Vertex(0.0f, 1.0, 0.0f,0.0f, 1.0f,0.0f,1.0f)    // top left 
    };

     DWORD indices2[] = {
         // Front Face
         0,  1,  2,
        0,  2,  3,
     };



     D3D11_BUFFER_DESC indexBufferDesc2;
     ZeroMemory(&indexBufferDesc2, sizeof(indexBufferDesc2));

     indexBufferDesc2.Usage = D3D11_USAGE_DEFAULT;
     indexBufferDesc2.ByteWidth = sizeof(DWORD) * 2 * 3;
     indexBufferDesc2.BindFlags = D3D11_BIND_INDEX_BUFFER;
     indexBufferDesc2.CPUAccessFlags = 0;
     indexBufferDesc2.MiscFlags = 0;

     D3D11_SUBRESOURCE_DATA iinitData2;

     iinitData2.pSysMem = indices2;
     d3d11Device->CreateBuffer(&indexBufferDesc2, &iinitData2, &d2dIndexBuffer2);


    D3D11_BUFFER_DESC vertexBufferDesc2;
    ZeroMemory(&vertexBufferDesc2, sizeof(vertexBufferDesc2));

    vertexBufferDesc2.Usage = D3D11_USAGE_DEFAULT;
    vertexBufferDesc2.ByteWidth = sizeof(Vertex) * 4;
    vertexBufferDesc2.BindFlags = D3D11_BIND_VERTEX_BUFFER;
    vertexBufferDesc2.CPUAccessFlags = 0;
    vertexBufferDesc2.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA vertexBufferData2;

    ZeroMemory(&vertexBufferData2, sizeof(vertexBufferData2));
    vertexBufferData2.pSysMem = v2;
    hr = d3d11Device->CreateBuffer(&vertexBufferDesc2, &vertexBufferData2, &triangleVertBuffer2);






    UINT stride = sizeof(Vertex);
    UINT offset = 0;



    ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    return true;
}


    struct VS_OUTPUT
{
    float4 Pos : SV_POSITION;
    float4 Color : COLOR;
};

Texture2D ObjTexture;
SamplerState ObjSamplerState;


VS_OUTPUT VS(float4 inPos : POSITION, float4 inColor : COLOR)
{
    VS_OUTPUT output;

    output.Pos = inPos;
    output.Color = inColor;

    return output;
}

float4 PS(VS_OUTPUT input) : SV_TARGET
{
    float2 temp;
    temp = input.Pos;
    float4 diffuse = ObjTexture.Sample(ObjSamplerState,0.5*temp);

    return input.Color + diffuse ;
}

        return DefWindowProc(hwnd,
            msg,
            wParam,
            lParam);
    }

    编辑3:

    我的顶点结构: 

    struct Vertex    //Overloaded Vertex Structure
{
    Vertex() {}
    Vertex(float x, float y, float z,
        float cr, float cg, float cb, float ca)
        : pos(x, y, z), color(cr, cg, cb, ca) {}

    XMFLOAT3 pos;
    XMFLOAT4 color;
};

    输入说明: 

    D3D11_INPUT_ELEMENT_DESC layout[] =
{
    { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
    { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },
};

    我认为问题是,当我传递我的纹理并在像素着色器中的漫反射中读取它时,我的纹理在后缓冲区上的映射是不一样的,因此我只从第二条扫描线中找到红色,因此生成零。。?

    编辑3: 

    struct Vertex    //Overloaded Vertex Structure
{
    Vertex() {}
    Vertex(float x, float y, float z,
        float cr, float cg, float cb, float ca)
        : pos(x, y, z), color(cr, cg, cb, ca) {}

    XMFLOAT3 pos;
    XMFLOAT4 color;
};

ID3D11Texture2D* renderTargetTextureMap;
ID3D11RenderTargetView* renderTargetViewMap;
ID3D11ShaderResourceView* shaderResourceViewMap;
ID3D11SamplerState* CubesTexSamplerState;


ID3D11Buffer *d2dIndexBuffer;
ID3D11Buffer *d2dIndexBuffer2;

D3D11_TEXTURE2D_DESC textureDesc;
D3D11_RENDER_TARGET_VIEW_DESC renderTargetViewDesc;
D3D11_SHADER_RESOURCE_VIEW_DESC shaderResourceViewDesc;




D3D11_INPUT_ELEMENT_DESC layout[] =
{
    { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
    { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
UINT numElements = ARRAYSIZE(layout);

bool InitializeDirect3d11App(HINSTANCE hInstance)
{
    //Describe our Buffer
    DXGI_MODE_DESC bufferDesc;

    ZeroMemory(&bufferDesc, sizeof(DXGI_MODE_DESC));

    bufferDesc.Width = Width;
    bufferDesc.Height = Height;
    bufferDesc.RefreshRate.Numerator = 60;
    bufferDesc.RefreshRate.Denominator = 1;
    bufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    bufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
    bufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;

    //Describe our SwapChain
    DXGI_SWAP_CHAIN_DESC swapChainDesc;

    ZeroMemory(&swapChainDesc, sizeof(DXGI_SWAP_CHAIN_DESC));

    swapChainDesc.BufferDesc = bufferDesc;
    swapChainDesc.SampleDesc.Count = 1;
    swapChainDesc.SampleDesc.Quality = 0;
    swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    swapChainDesc.BufferCount = 1;
    swapChainDesc.OutputWindow = hwnd;
    swapChainDesc.Windowed = TRUE;
    swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;


    //Create our SwapChain
    hr = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, NULL, NULL, NULL,
        D3D11_SDK_VERSION, &swapChainDesc, &SwapChain, &d3d11Device, NULL, &d3d11DevCon);

    //Create our BackBuffer
    ID3D11Texture2D* BackBuffer;
    hr = SwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (void**)&BackBuffer);

    //Create our Render Target
    hr = d3d11Device->CreateRenderTargetView(BackBuffer, NULL, &renderTargetView);
    BackBuffer->Release();
    ////////////////////////////////////////////////////////////////////////EXPERIMENT AREA//////////////////////////////////////////////////////////////////////////////////////
    ZeroMemory(&textureDesc, sizeof(textureDesc));

    // Setup the texture description.
    // We will have our map be a square
    // We will need to have this texture bound as a render target AND a shader resource
    textureDesc.Width = Width/2;
    textureDesc.Height = Height/2;
    textureDesc.MipLevels = 1;
    textureDesc.ArraySize = 1;
    textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    textureDesc.SampleDesc.Count = 1;
    textureDesc.SampleDesc.Quality = 0;
    textureDesc.Usage = D3D11_USAGE_DEFAULT;
    textureDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
    textureDesc.CPUAccessFlags = 0;
    textureDesc.MiscFlags = 0;

    d3d11Device->CreateTexture2D(&textureDesc, NULL, &renderTargetTextureMap);

    // Setup the description of the render target view.
    renderTargetViewDesc.Format = textureDesc.Format;
    renderTargetViewDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
    renderTargetViewDesc.Texture2D.MipSlice = 0;

    // Create the render target view.
    d3d11Device->CreateRenderTargetView(renderTargetTextureMap, &renderTargetViewDesc, &renderTargetView);



    /////////////////////// Map's Shader Resource View
    // Setup the description of the shader resource view.
    shaderResourceViewDesc.Format = textureDesc.Format;
    shaderResourceViewDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
    shaderResourceViewDesc.Texture2D.MostDetailedMip = 0;
    shaderResourceViewDesc.Texture2D.MipLevels = 1;

    // Create the shader resource view.
    d3d11Device->CreateShaderResourceView(renderTargetTextureMap, &shaderResourceViewDesc, &shaderResourceViewMap);


    //d3d11DevCon->OMSetRenderTargets(1, &renderTargetViewMap, NULL);
    //d3d11DevCon->PSSetShaderResources(0, 1, &shaderResourceViewMap);

    return true;
}

void CleanUp()
{
    //Release the COM Objects we created
    SwapChain->Release();
    d3d11Device->Release();
    d3d11DevCon->Release();
    renderTargetView->Release();
    triangleVertBuffer->Release();
    VS->Release();
    PS->Release();
    VS_Buffer->Release();
    PS_Buffer->Release();
    vertLayout->Release();
}

bool InitScene()
{
    //Compile Shaders from shader file
    hr = D3DX11CompileFromFile(L"Effect.fx", 0, 0, "VS", "vs_5_0", 0, 0, 0, &VS_Buffer, 0, 0);
    hr = D3DX11CompileFromFile(L"Effect.fx", 0, 0, "PS", "ps_5_0", 0, 0, 0, &PS_Buffer, 0, 0);

    //Create the Shader Objects
    hr = d3d11Device->CreateVertexShader(VS_Buffer->GetBufferPointer(), VS_Buffer->GetBufferSize(), NULL, &VS);
    hr = d3d11Device->CreatePixelShader(PS_Buffer->GetBufferPointer(), PS_Buffer->GetBufferSize(), NULL, &PS);

    //Set Vertex and Pixel Shaders
    d3d11DevCon->VSSetShader(VS, 0, 0);
    d3d11DevCon->PSSetShader(PS, 0, 0);


    //Create the Input Layout
    hr = d3d11Device->CreateInputLayout(layout, numElements, VS_Buffer->GetBufferPointer(),
        VS_Buffer->GetBufferSize(), &vertLayout);

    //Set the Input Layout
    d3d11DevCon->IASetInputLayout(vertLayout);

    //Set Primitive Topology
    d3d11DevCon->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);

    //Create the Viewport
    D3D11_VIEWPORT viewport;
    ZeroMemory(&viewport, sizeof(D3D11_VIEWPORT));

    viewport.TopLeftX = 0;
    viewport.TopLeftY = 0;
    viewport.Width = 800;
    viewport.Height = 600;

    //Set the Viewport
    d3d11DevCon->RSSetViewports(1, &viewport);



    ////////////////***********************First  Texture Vertex Buffer *******************************/////////////////////////////
    //Create the vertex buffer

    Vertex v[] =
    {
        Vertex(-0.35f, -0.35f, 0.0f, 1.0f,0.0f,0.0f, 1.0f),
        Vertex(-0.35f,  0.35f, 0.0f, 1.0f,0.0f,0.0f, 1.0f),
        Vertex(0.35f,  0.35f, 0.0f, 1.0f, 0.0f,0.0f, 1.0f),
        Vertex(0.35f, -0.35f, 0.0f, 1.0f,0.0f, 0.0f, 1.0f),
    };

    DWORD indices[] = {
        // Front Face
        0,  1,  3,
        1,  2,  3,
    };


    D3D11_BUFFER_DESC indexBufferDesc;
    ZeroMemory(&indexBufferDesc, sizeof(indexBufferDesc));

    indexBufferDesc.Usage = D3D11_USAGE_DEFAULT;
    indexBufferDesc.ByteWidth = sizeof(DWORD) * 2 * 3;
    indexBufferDesc.BindFlags = D3D11_BIND_INDEX_BUFFER;
    indexBufferDesc.CPUAccessFlags = 0;
    indexBufferDesc.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA iinitData;

    iinitData.pSysMem = indices;
    d3d11Device->CreateBuffer(&indexBufferDesc, &iinitData, &d2dIndexBuffer);


    D3D11_BUFFER_DESC vertexBufferDesc;
    ZeroMemory(&vertexBufferDesc, sizeof(vertexBufferDesc));

    vertexBufferDesc.Usage = D3D11_USAGE_DEFAULT;
    vertexBufferDesc.ByteWidth = sizeof(Vertex) * 4;
    vertexBufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
    vertexBufferDesc.CPUAccessFlags = 0;
    vertexBufferDesc.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA vertexBufferData;

    ZeroMemory(&vertexBufferData, sizeof(vertexBufferData));
    vertexBufferData.pSysMem = v;
    hr = d3d11Device->CreateBuffer(&vertexBufferDesc, &vertexBufferData, &triangleVertBuffer);




    ////////////////////////////////////////////////////// Second Vertex.


     Vertex v2[] = {
        // positions          // colors           // texture coords
        Vertex(1.0f, 1.0f, 0.0f,0.0f,1.0f,0.0f,1.0f),   // top right
        Vertex(1.0f,0.0f, 0.0f,0.0f,1.0f,0.0f,1.0f),   // bottom right
        Vertex(0.0f,0.0f, 0.0f,0.0f,1.0f,0.0f,1.0f),   // bottom left
        Vertex(0.0f, 1.0, 0.0f,0.0f, 1.0f,0.0f,1.0f)    // top left 
    };

     DWORD indices2[] = {
         // Front Face
         0,  1,  2,
        0,  2,  3,
     };



     D3D11_BUFFER_DESC indexBufferDesc2;
     ZeroMemory(&indexBufferDesc2, sizeof(indexBufferDesc2));

     indexBufferDesc2.Usage = D3D11_USAGE_DEFAULT;
     indexBufferDesc2.ByteWidth = sizeof(DWORD) * 2 * 3;
     indexBufferDesc2.BindFlags = D3D11_BIND_INDEX_BUFFER;
     indexBufferDesc2.CPUAccessFlags = 0;
     indexBufferDesc2.MiscFlags = 0;

     D3D11_SUBRESOURCE_DATA iinitData2;

     iinitData2.pSysMem = indices2;
     d3d11Device->CreateBuffer(&indexBufferDesc2, &iinitData2, &d2dIndexBuffer2);


    D3D11_BUFFER_DESC vertexBufferDesc2;
    ZeroMemory(&vertexBufferDesc2, sizeof(vertexBufferDesc2));

    vertexBufferDesc2.Usage = D3D11_USAGE_DEFAULT;
    vertexBufferDesc2.ByteWidth = sizeof(Vertex) * 4;
    vertexBufferDesc2.BindFlags = D3D11_BIND_VERTEX_BUFFER;
    vertexBufferDesc2.CPUAccessFlags = 0;
    vertexBufferDesc2.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA vertexBufferData2;

    ZeroMemory(&vertexBufferData2, sizeof(vertexBufferData2));
    vertexBufferData2.pSysMem = v2;
    hr = d3d11Device->CreateBuffer(&vertexBufferDesc2, &vertexBufferData2, &triangleVertBuffer2);

    ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    return true;
}

    编辑4: 

    void DrawScene()
{

    //Set the vertex buffer
    UINT stride = sizeof(Vertex);
    UINT offset = 0;

    ///////////////////////////////////////////////////////////Buffer 2//////////////////////////////////////////////////////////////////

    d3d11DevCon->IASetIndexBuffer(d2dIndexBuffer, DXGI_FORMAT_R32_UINT, 0);
    d3d11DevCon->IASetVertexBuffers(0, 1, &triangleVertBuffer, &stride, &offset);
    ////Draw the triangle
    d3d11DevCon->DrawIndexed(6, 0, 0);

    d3d11DevCon->OMSetRenderTargets(1, &renderTargetView, NULL);
    ////////////////////////////////////////////
    d3d11DevCon->PSSetShaderResources(0, 1, &shaderResourceViewMap);



    d3d11DevCon->IASetIndexBuffer(d2dIndexBuffer2, DXGI_FORMAT_R32_UINT, 0);
    d3d11DevCon->IASetVertexBuffers(0, 1, &triangleVertBuffer2, &stride, &offset);

    ////Draw the triangle
    d3d11DevCon->DrawIndexed(6, 0, 0);

    //Present the backbuffer to the screen
    SwapChain->Present(0, 0);
}
    1 回复  |  直到 8 年前
        1
  •  1
  •   VuVirt    8 年前

    为了从顶点位置计算正确的纹理坐标,需要: 1.创建具有宽度和高度(而不是一半)的渲染目标纹理: 

    textureDesc.Width = Width; // /2; // Do not use half width
textureDesc.Height = Height; // /2;  // Do not use half height

    2.在像素着色器中将位置划分为float2(1/Width,1/Height),如下所示: 

    float2 tex = input.Pos * float2(1.0f / 800.0f, 1.0f / 600.0f);
float4 diffuse = ObjTexture.Sample(ObjSamplerState, tex);
return input.Color + diffuse;
    推荐文章
    Eugen  ·  如何检查是否使用了真正的硬件视频适配器
    8 年前
    EmmetOT  ·  使用计算着色器返回纹理是否具有特定颜色
    8 年前
    Ciaran Evans  ·  DirectX11 Frank Luna-错误LNK1104无法打开文件“Effects11d”。“lib”ParticleSystem
    8 年前
    Elad Maimoni  ·  无法从Direct3D 11中的内存正确初始化2D纹理
    8 年前
    Akshit Verma  ·  DirectX 11渲染到纹理问题
    8 年前
    Mike5050  ·  DirectX 11什么是着色器资源视图
    8 年前
    June Hee Lee  ·  如何创建交换链格式DXGI\u format\u 420\u不透明?
    8 年前
    Morgan Johnson  ·  使用模板在编译时跨结构字段迭代
    8 年前
    iamrameshkumar  ·  桌面复制(DirectX)屏幕捕获无法提供屏幕更新
    8 年前
    Gomi Odabaşıoğlu  ·  C#SharpDX没有选项来检查三角形是正面还是背面
    8 年前
    关于   移动版
    代码之家 - 一站式码农服务社区
    沪ICP备11025650号