c++ - 用一个函数 DirectX11 绘制 2 个四边形
问题描述
我正在学习 DirectX11，我正在尝试使用单个函数绘制 2 Quad，但是当我调用此函数时，该函数会覆盖以前的 QUAD。
如果您想查看问题，这里有一个 gif：
<a href="https://gyazo.com/b819ffc64975c1531434047b9b4a92f7"><video alt="Video from Gyazo" width="1280" autoplay muted loop playsinline controls><source src="https://i.gyazo.com/b819ffc64975c1531434047b9b4a92f7.mp4" type="video/mp4" /></video></a>这是代码：
（这是我调用函数来绘制 QUAD 的地方）
void Application::ApplicationRun()
{
//wind.SetEventCallBack(std::bind(&Application::OnEvent, Instance, std::placeholders::_1));
Vertex v[] =
{
Vertex(-0.5f, -0.5f, 0.0f, 1.0f), /// botom Left Point - [0]
Vertex(-0.5f, 0.5f, 0.0f, 0.0f), //top Left Point - [1]
Vertex{ 0.0f, -0.5f, 1.0f, 1.0f}, // -[2]
Vertex(0.0f, 0.5f, 1.0f, 0.0f), //Right Point - [3]
};
Vertex vv[] =
{
Vertex(-0.1f, -0.1f, 0.0f, 0.0f), /// botom Left Point - [0]
Vertex(-0.1f, 0.1f, 0.0f, 0.0f), //top Left Point - [1]
Vertex{ 0.05f, -0.1f, 0.0f, 0.0f}, // -[2]
Vertex(0.05f, 0.1f, 0.0f, 0.0f), //Right Point - [3]
};
DWORD indices[] =
{
0,1,2,
1,2,3,
};
while (wind.PorcessMessage())
{
//
if (Armageddon::Application::GetInstance()->GetWindow()->GetNativeKeyBoard().KeyIsPressed(AG_KEY_A))
{
Log::GetLogger()->trace("A ");
wind.GetWindowGraphics()->DrawTriangle(v, ARRAYSIZE(v));
}
if (Armageddon::Application::GetInstance()->GetWindow()->GetNativeKeyBoard().KeyIsPressed(AG_KEY_B))
{
Log::GetLogger()->trace("B");
wind.GetWindowGraphics()->DrawTriangle(vv, ARRAYSIZE(vv));
}
}
}
（这里是 DrawTriangle 函数）：
void Armageddon::D3D_graphics::DrawTriangle(Vertex v[], int Vertexcount)
{
HRESULT hr = vertexBuffer.Initialize(this->device.Get(),this->device_context.Get() , v, Vertexcount);
if (FAILED(hr))
{
Armageddon::Log::GetLogger()->error("FAILED INITIALIZE VERTEX BUFFER ");
}
DWORD indices[] =
{
0,1,2,
1,2,3,
};
hr = this->indicesBuffer.Init(this->device.Get(), indices, ARRAYSIZE(indices));
hr = DirectX::CreateWICTextureFromFile(this->device.Get(), L"..\\TestApplication\\assets\\Textures\\tex.png",nullptr,textures.GetAddressOf());
if (FAILED(hr))
{
Armageddon::Log::GetLogger()->error("FAILED INITIALIZE WIC TEXTURE ");
}
}
（这里是我初始化顶点和索引缓冲区的地方）：
HRESULT Initialize(ID3D11Device* device , ID3D11DeviceContext* device_context, T* data, UINT numElements)
{
this->bufferSize = numElements;
this->stride = sizeof(T);
D3D11_BUFFER_DESC vertex_buffer_desc;
ZeroMemory(&vertex_buffer_desc, sizeof(vertex_buffer_desc));
vertex_buffer_desc.Usage = D3D11_USAGE_DEFAULT;
vertex_buffer_desc.ByteWidth = sizeof(Vertex) * numElements;
vertex_buffer_desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
vertex_buffer_desc.CPUAccessFlags = 0;
vertex_buffer_desc.MiscFlags = 0;
D3D11_SUBRESOURCE_DATA VertexBufferData;
ZeroMemory(&VertexBufferData, sizeof(VertexBufferData));
VertexBufferData.pSysMem = data;
HRESULT hr = device->CreateBuffer(&vertex_buffer_desc, &VertexBufferData, buffer.GetAddressOf());
UINT offset = 0;
device_context->IASetVertexBuffers(0, 1, buffer.GetAddressOf(), &stride, &offset);
return hr;
};```
HRESULT Init(ID3D11Device* device, DWORD* data, UINT n_indices)
{
D3D11_SUBRESOURCE_DATA Indice_buffer_data;
this->buffer_size = n_indices;
D3D11_BUFFER_DESC Indice_buffer_desc;
ZeroMemory(&Indice_buffer_desc, sizeof(Indice_buffer_desc));
Indice_buffer_desc.Usage = D3D11_USAGE_DEFAULT;
Indice_buffer_desc.ByteWidth = sizeof(DWORD) * n_indices;
Indice_buffer_desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
Indice_buffer_desc.CPUAccessFlags = 0;
Indice_buffer_desc.MiscFlags = 0;
ZeroMemory(&Indice_buffer_data, sizeof(Indice_buffer_data));
Indice_buffer_data.pSysMem = data;
HRESULT hr = device->CreateBuffer(&Indice_buffer_desc, &Indice_buffer_data, buffer.GetAddressOf());
return hr;
};
这是我画四边形的地方：
void Armageddon::D3D_graphics::RenderFrame()
{
float color[] = { 0.1f,0.1f,0.1f,1.0f };
ImGui_ImplDX11_NewFrame();
ImGui_ImplWin32_NewFrame();
ImGui::NewFrame();
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
{
static float f = 0.0f;
static int counter = 0;
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::End();
}
// 3. Show another simple window.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
ImGui::Render();
this->device_context->OMSetRenderTargets(1, target_view.GetAddressOf(), this->depthStencilView.Get());
this->device_context->ClearRenderTargetView(this->target_view.Get(), color);
this->device_context->ClearDepthStencilView(this->depthStencilView.Get(), D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 1.0f, 0);
//ICI QU'ON FAIT TOUT LES RENDU APRES AVOIR CLEAN LE PLAN
this->device_context->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY::D3D_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
f += 0.1;
ConstantBuffer.data.mat = DirectX::XMMatrixRotationRollPitchYaw(0.0f,0.0f,f);
ConstantBuffer.data.mat = DirectX::XMMatrixTranspose(ConstantBuffer.data.mat);
ConstantBuffer.data.Yoffset = f;
ConstantBuffer.data.Xoffset = 0;
// Armageddon::Log::GetLogger()->trace(ConstantBuffer.data.Yoffset);
if (!ConstantBuffer.ApplyChanges())
{
Armageddon::Log::GetLogger()->error("ERRO WHEN APPLYING CHANGES");
}
this->device_context->VSSetConstantBuffers(0, 1, ConstantBuffer.GetAdressOf());
/***********SHADER*******************************/
this->device_context->VSSetShader(vertexShader.GetShader(), NULL, 0);
this->device_context->PSSetShader(pixelShader.GetShader(), NULL, 0);
this->device_context->IASetInputLayout(this->vertexShader.GetInputLayout());
/***********Texture Sampler*******************************/
this->device_context->PSSetSamplers(0, 1, this->ColorSampler.GetAddressOf());
/***********DEPHT BUFFER*******************************/
this->device_context->OMSetDepthStencilState(this->depthStencilState.Get(), 0);
/***********RASTERIZER STATE*******************************/
this->device_context->RSSetState(this->rasterizerState.Get());
/***********UPDATE LES CONSTANTS BUFFER*******************************/
UINT stride = sizeof(Vertex);
UINT offset = 0;
this->device_context->IASetIndexBuffer(indicesBuffer.Get(), DXGI_FORMAT_R32_UINT, 0);
//this->device_context->IASetVertexBuffers(0, 1, vertexBuffer.GetAddressOf(), &stride, &offset);
this->device_context->PSSetShaderResources(0, 1, this->textures.GetAddressOf());
this->device_context->DrawIndexed(indicesBuffer.GetSize(), 0,0);
ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
this->swapchain->Present(1,0);
}
解决方案
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