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Drawing text in DirectX11


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#1 Xooch   Members   -  Reputation: 179

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Posted 21 November 2012 - 12:36 AM

Hey there,

I've recently attempted to draw text to my screen in DirectX 11, I have no errors, but I think its the way Im ordering the way things are drawn in my Render function, could an experienced programmer take a look for me and tell me what Im doing wrong?

The outcome it supose to be a 2d bitmap in the top left, a 3d cube spinning in the middle with lighting, and another 2d bitmap in the top right, holding txt, but the surface is alphablended out.

thanks

Graphics::Init
bool Graphics::Init(int screenWidth, int screenHeight, HWND hwnd)
{
bool result;
D3DXMATRIX baseViewMatrix;
//-----------------
// D3D
//-----------------
//Create the Direct3D Object
d3d = new D3D;
if(!d3d)
{
  return false;
}
//Initialize the Direct3D Object
result = d3d->Init(screenWidth, screenHeight, VSYNC_ENABLED, hwnd,
	  FULL_SCREEN, SCREEN_DEPTH, SCREEN_NEAR);
if(!result)
{
  MessageBox(hwnd, "Could not initalize Direct3D", "Error", MB_OK);
  return false;
}
//-----------------
// CAMERA
//-----------------
// Create the camera object.
camera = new Camera;
if(!camera)
{
  return false;
}
//Initialize a base view matrix with the camera for 2D User interface rendering
camera->SetPosition(0.0f, 0.0f, -10.0f);
camera->Render();
camera->GetViewMatrix(baseViewMatrix);

//-----------------
// MODEL (3D)
//-----------------
// Create the model object.
model = new Model;
if(!model)
{
  return false;
}
// Initialize the model object.
result = model->Init(d3d->GetDevice(), "Shapes/Cube.txt", "Textures/seafloor.bmp");
if(!result)
{
  MessageBox(hwnd, "Could not initialize the model object.", "Error", MB_OK);
  return false;
}
//-----------------
// COLORSHADER
//-----------------
// Create the color shader object.
colorshader = new Colorshader;
if(!colorshader)
{
  return false;
}
// Initialize the color shader object.
result = colorshader->Init(d3d->GetDevice(), hwnd);
if(!result)
{
  MessageBox(hwnd, "Could not initialize the color shader object.", "Error!", MB_OK);
  return false;
}
//-----------------
// TEXTURESHADER
//-----------------
//Create the texture shader object
textureshader = new Textureshader;
if(!textureshader)
{
  return false;
}
//Initialize the textureshader object
result = textureshader->Init(d3d->GetDevice(), hwnd);
if(!result)
{
  MessageBox(hwnd, "Could not load the texutre shader object", "Error!", MB_OK);
  return false;
}
//-----------------
// BITMAP (2D)
//-----------------
//Create the bitmap object.
bitmap = new Bitmap;
if(!bitmap)
{
  return false;
}
// Initialize the bitmap object.
result = bitmap->Init(d3d->GetDevice(), screenWidth, screenHeight, "Textures/seamlessMetal.jpg", 256, 256);
if(!result)
{
  MessageBox(hwnd, "Could not initialize the bitmap object.", "Error", MB_OK);
  return false;
}
//-----------------
// LIGHTSHADER
//-----------------
//Create the light shader object
lightshader = new Lightshader;
if(!lightshader)
{
  return false;
}
//Initialize the light shader object
result = lightshader->Init(d3d->GetDevice(), hwnd);
if(!result)
{
  MessageBox(hwnd, "Could not initialize the light shader object.", "Error!", MB_OK);
  return false;
}
//-----------------
// LIGHT
//-----------------
//Create the light object
light = new Light;
if(!light)
{
  return false;
}
//Initialize the light object
light->SetAmbientColor(0.15f, 0.15f, 0.15f, 1.0f);
light->SetDiffuseColor(1.0f, 1.0f, 1.0f, 1.0f);
light->SetDirection(0.0f, 0.0f, 1.0f);
light->SetSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
light->SetSpecularPower(32.0f);
//-----------------
// TEXT
//-----------------
//Create text object
text = new Text;
if(!text)
{
  return false;
}
//Initialize the text object
result = text->Init(d3d->GetDevice(), d3d->GetDeviceContext(), hwnd, screenWidth, screenHeight, baseViewMatrix);
if(!result)
{
  MessageBox(hwnd, "Could not initialize the text object", "Error!", MB_OK);
  return false;
}
return true;
}




Graphics::Render
bool Graphics::Render(float rotation)
{
//-----------------
// VARIABLES
//-----------------
D3DXMATRIX worldMatrix, viewMatrix, projectionMatrix, orthoMatrix;
bool result;
//-----------------
// BEGIN SCENE
//-----------------
//Clear the buffers to a black screen
d3d->BeginScene(0.0f, 0.0f, 0.0f, 1.0f);  //RGBA
//-----------------
// LIGHTING
//-----------------
// Render the model using the light shader.
result = lightshader->Render(d3d->GetDeviceContext(), model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix,
  model->GetTexture(), light->GetDirection(), light->GetAmbientColor(), light->GetDiffuseColor(), camera->GetPosition(),
  light->GetSpecularColor(), light->GetSpecularPower());
if(!result)
{
  return false;
}
//-----------------
// CAMERA
//-----------------

//Generate the view matrix based on the camera's position
camera->Render();
//Get the world, view, and projection matrices from the camera and d3d objects.
camera->GetViewMatrix(viewMatrix);
d3d->GetWorldMatrix(worldMatrix);
d3d->GetProjectionMatrix(projectionMatrix);  //Draw 3D
d3d->GetOrthoMatrix(orthoMatrix);    //Draw 2D

//-----------------
// 2D RENDERING
//-----------------
//Turn off the ZBuffer to start 2d rendering
d3d->TurnZBufferOff();
//Turn on alpha blending to start 2d rendering
d3d->TurnAlphaBlendingOn();
//FONT
//Render the text strings
result = text->Render(d3d->GetDeviceContext(), worldMatrix, orthoMatrix);
if(!result)
{
  return false;
}
//turn off alpha blending after rendering the text
d3d->TurnAlphaBlendingOff();

//RENDER 2D BITMAP
//Put the bitmap vertex and index buffers on the graphics pipeline to prepare
result = bitmap->Render(d3d->GetDeviceContext(), 1, 1);
if(!result)
{
  return false;
}

//RENDER 2D TEXTURE
//Render the bitmap with the texture shader
result = textureshader->Render(d3d->GetDeviceContext(), bitmap->GetIndexCount(), worldMatrix, viewMatrix, orthoMatrix, bitmap->GetTexture());
if(!result)
{
  return false;
}
//Turn zBuffer back on for 3D rendering
d3d->TurnZBufferOn();

//-----------------
// ANIMATION
//-----------------
//Rotate
D3DXMatrixRotationY(&worldMatrix, rotation);
//-----------------
// 3D RENDERING
//-----------------
//Put the model vertex and index buffers on the graphics pipeline to prepare them for drawing.
model->Render(d3d->GetDeviceContext());
//-----------------
// 3D TEXTURE
//-----------------
//Render the model using the texture
result = textureshader->Render(d3d->GetDeviceContext(), model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix,
  model->GetTexture());
if(!result)
{
  return false;
}
// Render the model using the color shader.
result = colorshader->Render(d3d->GetDeviceContext(), model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix);
if(!result)
{
  return false;
}

//-----------------
// END DRAW/SCENE
//-----------------
//Present the rendered scene of teh screen
d3d->EndScene();
return true;
}

Edited by Xuchilbara, 21 November 2012 - 12:38 AM.


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