I am developing an utility plugin for 3dsMax 2013 and 2014 in C++. In this, I need to set a bitmap to the diffuse map of the currently selected object's material. I tried the following code, file name is showing near to the diffuse map in material editor but the image is not applied to the material as well as on clicking the View image button in Bitmap Parameters rollout is also not showing any image.
Bitmap* bmap;
BitmapInfo bmap_info(L"D:\\misc\\licenseplates.jpg");
// Load the selected image
BMMRES status;
bmap = TheManager->Load(&bmap_info, &status);
for( int i = 0; i < GetCOREInterface()->GetSelNodeCount(); ++i )
{
INode *node = GetCOREInterface()->GetSelNode(i);
// Get the material from the node
Mtl *m = node->GetMtl();
if (!m) return; // No material assigned
StdMat* std = (StdMat *)m;
// Access the Diffuse map
BitmapTex *tmap = (BitmapTex *)std->GetSubTexmap(ID_DI);
// No map assigned
if (!tmap)
{
tmap = (BitmapTex*)NewDefaultBitmapTex();
}
tmap->SetBitmap(bmap);
tmap->SetBitmapInfo(bmap_info);
tmap->ReloadBitmapAndUpdate();
tmap->fnReload();
std->SetSubTexmap(ID_DI,tmap);
std->SetTexmapAmt(ID_DI,1.0f,0);
std->EnableMap(ID_DI, TRUE);
}
Do I need to set some other parameters also to set the map?
Related
I have been trying to change the format from a camera that give a texture in Alpha8 to RGBA and have been unsuccessful so far.
This is the code I've tried:
public static class TextureHelperClass
{
public static Texture2D ChangeFormat(this Texture2D oldTexture, TextureFormat newFormat)
{
//Create new empty Texture
Texture2D newTex = new Texture2D(2, 2, newFormat, false);
//Copy old texture pixels into new one
newTex.SetPixels(oldTexture.GetPixels());
//Apply
newTex.Apply();
return newTex;
}
}
And I'm calling the code like this:
Texture imgTexture = Aplpha8Texture.ChangeFormat(TextureFormat.RGBA32);
But the image gets corrupted and isn't visible.
Does anyone know how to change this Alpha8 to RGBA so I can process it like any other image in OpenCV?
A friend provided me with the answer:
Color[] cs =oldTexture.GetPixels();
for(int i = 0; i < cs.Length; i++){//we want to set the r g b values to a
cs[i].r = cs[i].a;
cs[i].g = cs[i].a;
cs[i].b = cs[i].a;
cs[i].a = 1.0f;
}
//set the pixels in the new texture
newTex.SetPixels(cs);
//Apply
newTex.Apply();
This will take alot of resources but it will work for sure.
If you know a better way to make this change please add an answer to this thread.
I have a set of gameobjects (simple cubes). I can set their initial colour when instantiating them. However when I try and change the colour by code, the object in the game view and inspector show as white, but in the colour picker show the correct colour!
There is a single directional light (the default one).
IEnumerator ColourChange()
{
Color targetColour = new Color(Random.Range(0, 255), Random.Range(0, 255), Random.Range(0, 255));
Debug.Log("color = " + targetColour);
for (int x = 0; x < CreateCubeGrid.GRIDSIZE; x++) {
for (int z = 0; z < CreateCubeGrid.GRIDSIZE; z++) {
CreateCubeGrid.cubeGrid[x,z].GetComponent<Renderer>().material.color = targetColour;
}
yield return new WaitForSeconds (0.05f);
}
}
Colours are 0 to 1 not 0 to 255.
Use Color32 if you want to use 0-255 values.
Color32 Documentation
In order to change the material's color, you must tell it exactly what color you're trying to change, by using Shader.Find("_YourColor") (Emission, Albedo, etc).
An approach that should work for materials using Standard Shader can be seen below:
private void ChangeColor(Color color)
{
//Fetch the Renderer from the GameObject.
Renderer rend = GetComponent<Renderer>();
//Find and set the main Color ("_Color") of the Material to the new one
rend.material.shader = Shader.Find("_Color");
rend.material.SetColor("_Color", color);
}
You can read more about changing a Material's color at Unity's Documentation.
I have a main_mesh that has 10 submeshes, I wonder how I can change the color of of these submeshes to a different color (e.g submesh1 will have a red color, submesh2 will have a blue color,...etc). Any advise please?
UPDATE:
This is how I'm getting my mesh which has 10 submeshes:
SkinnedMeshRenderer smr = gameobject1.GetComponent<SkinnedMeshRenderer>();
Mesh main_mesh = smr.sharedMesh;
SkinnedMeshRenderer smr = gameobject1.GetComponent<SkinnedMeshRenderer>();
Mesh main_mesh = smr.sharedMesh;
smr.materials[0].color = Color.red; // Change submesh1 to red color
smr.materials[1].color = Color.blue; // Change submesh2 to blue color
...
smr.materials[n].color = ... // Change submesh n to whatever color
Since you've added the tag Unityscript i'll assume that you want to be able to change submeshes inside a script.
Assignation as parameter
The first solution would be to have add a public parameter to you script that would be an array of Mesh. Then assign manually each submesh to the array through the inspector. Now you can access the material of each mesh and change it's color.
public class MyScript : MonoBehaviour {
public Mesh[] submeshes;
// Update is called once per frame
void Update () {
for (int i = 0; submeshes[i]; i++) {
// Return the first material of the mesh renderer, use .materials if multiple Material are applied
submeshes[i].renderer.material.color = Color.red;
}
}
}
Note that I used Mesh as type for my array, but you could directly use Material if you only want to change the color.
Also, if submeshes have the exact same material, It'll change the color for all submeshes, not just one. You need to have one material per mesh.
While this solution is not viable if your number of submeshes change dynamically, this solution is pretty simple and straighforwarded.
Use children
Instead of assigning every submeshes manually, you can dynamically change the color by accessing children
public class MyScript : MonoBehaviour {
public Mesh myObject;
// Update is called once per frame
void Update () {
Material[] array = myObject.GetComponentsInChildren<Material>();
for (int i = 0; array[i]; i++) {
array[i].color = Color.red;
}
}
}
This solution allows you to have N material assigned to your submeshes.
Here is the documentation for GetComponentsInChildren
Edit
Short answer If you want a specific answer to your case, it depends on the materials and shaders assigned to your skinned Mesh Renderer because they can override or alter your childrens' materials. If not, the below code should work.
SkinnedMeshRenderer smr = gameobject1.GetComponent<SkinnedMeshRenderer>();
Mesh main_mesh = smr.sharedMesh;
Mesh[] submeshes = main_mesh.GetComponentsInChildren<Mesh>();
for (int i = 0; submeshes[i]; i++) {
// If your submesh already have a material, remove the first line below !
submeshes[i].renderer.material = new Material(Shader.Find("Diffuse"));
submeshes[i].renderer.material.color = Color.red;
}
This solution create a new material for each submesh, which is quite brutal.
In the inspector, you should assign one material to each submeshes and then use always the same material with different colors.
In case it doesn't work
When you want to change the color of one specific mesh, this mesh needs to have his own material. The color of the mesh will depends on this materials and it's properties (shaders, textures, colors).
With a Skinned Mesh Renderer, you generally use Diffuse Material with textures to apply colors to one complex mesh. In some case, this mesh apply the color to it's childrens.
When using a Skinned Mesh Renderer, you usually use a UV texture. This particular texture is created based on your 3D object and is used to apply multiple color on it (sometimes also it's childrens). Here is a simple example of UV texture and here is a more complex example.
Note that, as a mesh Renderer, a skinned mesh renderer can have multiple materials which make the situation more complex but the principle remains the same.
SkinnedMeshRenderer smr = gameobject1.GetComponent<SkinnedMeshRenderer>();
Mesh main_mesh = smr.sharedMesh;
With your code if main_mesh use a UV texture, you have two solutions
Remove the texture then apply a color to it's children
Create a specific UV texture which apply colors as you want.
I'm a newbie of DirectX10. Now I'm developing a Direct10 application. It mixes two textures which are filled manually according to user's input. The current implementation is
Create two empty textures with usage D3D10_USAGE_STAGING.
Create two resource shader view to bind to the pixel shader because the shader needs it.
Copy the textures to the GPU memory by calling CopyResource.
Now the problem is that I can only see the first texture but I don't see the second. It looks to me that the binding doesn't work for the second texture.
I don't know what's wrong with it. Can anyone here shed me a light on it?
Thanks,
Marshall
The class COverlayTexture takes responsible for creating the texture, creating resource view, fill the texture with the mapped bitmap from another applicaiton and bind the resource view to the pixel shader.
HRESULT COverlayTexture::Initialize(VOID)
{
D3D10_TEXTURE2D_DESC texDesStaging;
texDesStaging.Width = m_width;
texDesStaging.Height = m_height;
texDesStaging.Usage = D3D10_USAGE_STAGING;
texDesStaging.BindFlags = 0;
texDesStaging.ArraySize = 1;
texDesStaging.MipLevels = 1;
texDesStaging.SampleDesc.Count = 1;
texDesStaging.SampleDesc.Quality = 0;
texDesStaging.MiscFlags = 0;
texDesStaging.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
texDesStaging.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
HR( m_Device->CreateTexture2D( &texDesStaging, NULL, &m_pStagingResource ) );
D3D10_TEXTURE2D_DESC texDesShader;
texDesShader.Width = m_width;
texDesShader.Height = m_height;
texDesShader.BindFlags = D3D10_BIND_SHADER_RESOURCE;
texDesShader.ArraySize = 1;
texDesShader.MipLevels = 1;
texDesShader.SampleDesc.Count = 1;
texDesShader.SampleDesc.Quality = 0;
texDesShader.MiscFlags = 0;
texDesShader.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
texDesShader.Usage = D3D10_USAGE_DEFAULT;
texDesShader.CPUAccessFlags = 0;
HR( m_Device->CreateTexture2D( &texDesShader, NULL, &m_pShaderResource ) );
D3D10_SHADER_RESOURCE_VIEW_DESC viewDesc;
ZeroMemory( &viewDesc, sizeof( viewDesc ) );
viewDesc.Format = texDesShader.Format;
viewDesc.ViewDimension = D3D10_SRV_DIMENSION_TEXTURE2D;
viewDesc.Texture2D.MipLevels = texDesShader.MipLevels;
HR( m_Device->CreateShaderResourceView( m_pShaderResource, &viewDesc, &m_pShaderResourceView ) );
}
HRESULT COverlayTexture::Render(VOID)
{
m_Device->PSSetShaderResources(0, 1, m_pShaderResourceView);
D3D10_MAPPED_TEXTURE2D lockedRect;
m_pStagingResource->Map( 0, D3D10_MAP_WRITE, 0, &lockedRect );
// Fill in the texture with the bitmap mapped from shared memory view
m_pStagingResource->Unmap(0);
m_Device->CopyResource(m_pShaderResource, m_pStagingResource);
}
I use two instances of the class COverlayTexture each of which fills its own bitmap to its texture respectively and renders with sequence COverlayTexture[1] then COverlayTexture[0].
COverlayTexture* pOverlayTexture[2];
for( int i = 1; i < 0; i++)
{
pOverlayTexture[i]->Render()
}
The blend state setting in the FX file is definedas below:
BlendState AlphaBlend
{
AlphaToCoverageEnable = FALSE;
BlendEnable[0] = TRUE;
SrcBlend = SRC_ALPHA;
DestBlend = INV_SRC_ALPHA;
BlendOp = ADD;
BlendOpAlpha = ADD;
SrcBlendAlpha = ONE;
DestBlendAlpha = ZERO;
RenderTargetWriteMask[0] = 0x0f;
};
The pixel shader in the FX file is defined as below:
Texture2D txDiffuse;
float4 PS(PS_INPUT input) : SV_Target
{
float4 ret = txDiffuse.Sample(samLinear, input.Tex);
return ret;
}
Thanks again.
Edit for Paulo:
Thanks a lot, Paulo. The problem is that which instance of the object should be bound to alpha texture or diffuse texture. As testing, I bind the COverlayTexture[0] to the alpha and COverlayTexture[1] to the diffuse texture.
Texture2D txDiffuse[2];
float4 PS(PS_INPUT input) : SV_Target
{
float4 ret = txDiffuse[1].Sample(samLinear, input.Tex);
float alpha = txDiffuse[0].Sample(samLinear, input.Tex).x;
return float4(ret.xyz, alpha);
}
I called the PSSetShaderResources for the two resource views.
g_pShaderResourceViews[0] = overlay[0].m_pShaderResourceView;
g_pShaderResourceViews[1] = overlay[1].m_pShaderResourceView;
m_Device->PSSetShaderResources(0, 2, g_pShaderResourceViews);
The result is that i don't see anything. I also tried the channel x,y,z,w.
Post some more code.
I'm not sure how you mean to mix these two textures. If you want to mix them in the pixel shader you need to sample both of them then add them (or whatever operation you required) toghether.
How do you add the textures toghether? By setting a ID3D11BlendState or in the pixel shader?
EDIT:
You don't need two textures in every class: if you want to write to your texture your usage should be D3D10_USAGE_DYNAMIC. When you do this, you can also have this texture as your shader resource so you don't need to do the m_Device->CopyResource(m_pShaderResource, m_pStagingResource); step.
Since you're using alpha blending you must control the alpha value output in the pixel shader (the w component of the float4 that the pixel shader returns).
Bind both textures to your pixel shader and use one textures value as the alpha components:
Texture2D txDiffuse;
Texture2D txAlpha;
float4 PS(PS_INPUT input) : SV_Target
{
float4 ret = txDiffuse.Sample(samLinear, input.Tex);
float alpha=txAlpha.Sample(samLinear,input.Tex).x; // Choose the proper channel
return float4(ret.xyz,alpha); // Alpha is the 4th component
}
I'd like to write my own stereo image viewer, because there are certain features I need which are missing from the one bundled with my NVidia/EVGA GTX 580.
I can't figure out how to program the card to enter "shutterglass" mode where every other frame (at 120 HZ) alternates left and right.
I've looked at the OpenGL, Direct3D, and XNA APIs, as well as information from NVIDIA, and can't figure out how to get started. How do I set separate left and right images, how do I tell the screen to display it, and how to I tell the driver to activate the shutterglass transmitter?
(Another disconcerting thing is that whenever I use the bundled software to view stereo images and video in shutterglass mode, it's in fullscreen, and the screen blinks when entering that mode--even though I run the screen at 120Hz in 2D. Is there a way to have a 3D surface in a window without upsetting the rest of the screen on the NVidia "gamer" cards that are 3D capable (570, 580)?
I'm a bit late to this, but I just got the stereoscopic 3D to work using nothing but a GTX 580 and OpenGL. No need for a quadro card or DirectX.
I have the nVidia 3D Vision driver and IR emitter and simply set the emitter to "Always on" in the nVidia control panel.
In my game engine, I switched to a full screen mode with 120Hz and render the scene twice with a slight frustum offset (as per nVidia's own documentation PDF on the manual implementation "2010_GTC2010.pdf").
No quad buffers or any other tricks needed, it works great. Plus, I am in control of all the settings, like convergence etc.
For the NVidia 3Dvision with the GEForce range you need to write a full screen directX surface twice the width of the display with the left image on the left,right on the right (duh).
Then you need to write a magic value into the bottom left of the image which the NVision driver picks up and turns on the glasses, you don't need the nvapi.dll
With the Nvidia pro glasses and a Quadra card you can use the regular OpenGL stereo API.
ps.I did find some sample code that manages to do this with a normal window.
Edit - it was a low level USB code talking to the xmitter that I could never get to build, I think it eventually became this http://sourceforge.net/projects/libnvstusb/
Here is some sample code for full screen with the NVision glasses.
I'm not a DirectX expert so some of this might be less than optimal.
My app is also based on Qt, there might be some Qt bits left in the code
-----------------------------------------------------------------
// header
void create3D();
void set3D();
IDirect3D9 *_d3d;
IDirect3DDevice9 *_d3ddev;
QSize _size; // full screen size
IDirect3DSurface9 *_imageBuf; //Source stereo image
IDirect3DSurface9 *_backBuf;
--------------------------------------------------------
// the code
#include <windows.h>
#include <windowsx.h>
#include <d3d9.h>
#include <d3dx9.h>
#include <strsafe.h>
#pragma comment (lib, "d3d9.lib")
#define NVSTEREO_IMAGE_SIGNATURE 0x4433564e //NV3D
typedef struct _Nv_Stereo_Image_Header
{
unsigned int dwSignature;
unsigned int dwWidth;
unsigned int dwHeight;
unsigned int dwBPP;
unsigned int dwFlags;
} NVSTEREOIMAGEHEADER, *LPNVSTEREOIMAGEHEADER;
// ORedflags in the dwFlagsfielsof the _Nv_Stereo_Image_Headerstructure above
#define SIH_SWAP_EYES 0x00000001
#define SIH_SCALE_TO_FIT 0x00000002
// call at start to set things up
void DisplayWidget::create3D()
{
_size = QSize(1680,1050); //resolution of my Samsung 2233z
_d3d = Direct3DCreate9(D3D_SDK_VERSION); // create the Direct3D interface
D3DPRESENT_PARAMETERS d3dpp; // create a struct to hold various device information
ZeroMemory(&d3dpp, sizeof(d3dpp)); // clear out the struct for use
d3dpp.Windowed = FALSE; // program fullscreen
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; // discard old frames
d3dpp.hDeviceWindow = winId(); // set the window to be used by Direct3D
d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8; // set the back buffer format to 32 bit // or D3DFMT_R8G8B8
d3dpp.BackBufferWidth = _size.width();
d3dpp.BackBufferHeight = _size.height();
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
d3dpp.BackBufferCount = 1;
// create a device class using this information and information from the d3dpp stuct
_d3d->CreateDevice(D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
winId(),
D3DCREATE_SOFTWARE_VERTEXPROCESSING,
&d3dpp,
&_d3ddev);
//3D VISION uses a single surface 2x images wide and image high
// create the surface
_d3ddev->CreateOffscreenPlainSurface(_size.width()*2, _size.height(), D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &_imageBuf, NULL);
set3D();
}
// call to put 3d signature in image
void DisplayWidget::set3D()
{
// Lock the stereo image
D3DLOCKED_RECT lock;
_imageBuf->LockRect(&lock,NULL,0);
// write stereo signature in the last raw of the stereo image
LPNVSTEREOIMAGEHEADER pSIH = (LPNVSTEREOIMAGEHEADER)(((unsigned char *) lock.pBits) + (lock.Pitch * (_size.height()-1)));
// Update the signature header values
pSIH->dwSignature = NVSTEREO_IMAGE_SIGNATURE;
pSIH->dwBPP = 32;
//pSIH->dwFlags = SIH_SWAP_EYES; // Src image has left on left and right on right, thats why this flag is not needed.
pSIH->dwFlags = SIH_SCALE_TO_FIT;
pSIH->dwWidth = _size.width() *2;
pSIH->dwHeight = _size.height();
// Unlock surface
_imageBuf->UnlockRect();
}
// call in display loop
void DisplayWidget::paintEvent()
{
// clear the window to a deep blue
//_d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 40, 100), 1.0f, 0);
_d3ddev->BeginScene(); // begins the 3D scene
// do 3D rendering on the back buffer here
RECT destRect;
destRect.left = 0;
destRect.top = 0;
destRect.bottom = _size.height();
destRect.right = _size.width();
// Get the Backbuffer then Stretch the Surface on it.
_d3ddev->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &_backBuf);
_d3ddev->StretchRect(_imageBuf, NULL, _backBuf, &destRect, D3DTEXF_NONE);
_backBuf->Release();
_d3ddev->EndScene(); // ends the 3D scene
_d3ddev->Present(NULL, NULL, NULL, NULL); // displays the created frame
}
// my images come from a camera
// _left and _right are QImages but it should be obvious what the functions do
void DisplayWidget::getImages()
{
RECT srcRect;
srcRect.left = 0;
srcRect.top = 0;
srcRect.bottom = _size.height();
srcRect.right = _size.width();
RECT destRect;
destRect.top = 0;
destRect.bottom = _size.height();
if ( isOdd() ) {
destRect.left = _size.width();
destRect.right = _size.width()*2;
// get camera data for _left here, code not shown
D3DXLoadSurfaceFromMemory(_imageBuf, NULL, &destRect,_right.bits(),D3DFMT_A8R8G8B8,_right.bytesPerLine(),NULL,&srcRect,D3DX_DEFAULT,0);
} else {
destRect.left = 0;
destRect.right = _size.width();
// get camera data for _right here, code not shown
D3DXLoadSurfaceFromMemory(_imageBuf, NULL, &destRect,_left.bits(),D3DFMT_A8R8G8B8,_left.bytesPerLine(),NULL,&srcRect,D3DX_DEFAULT,0);
}
set3D(); // add NVidia signature
}
DisplayWidget::~DisplayWidget()
{
_d3ddev->Release(); // close and release the 3D device
_d3d->Release(); // close and release Direct3D
}