frustration CubeMapping_OpenGL - Graphics Discussion Boards

Mark Salsbery1-Jun-07 4:54

1-Jun-07 4:54

I still don't know what type of bitmap you're using.

You draw 8-bit bitmaps the same as any bitmaps. You can use GetDeviceCaps(RASTERCAPS) to check
if the destination DC is a palette device. If it is, select your palette into it, call
RealizePalette() (usually), and draw the bitmap.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: 8 bit bmp

himuskanhere4-Jun-07 2:00

himuskanhere

4-Jun-07 2:00

thank u Sir,
but tell me how to know whether the destination DC is a palette device or not?
if not then how to set.

Re: 8 bit bmp

Mark Salsbery4-Jun-07 4:21

Mark Salsbery

4-Jun-07 4:21

rahul.shendurnikar wrote:
how to know whether the destination DC is a palette device or not?

if (GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE)
{
   // Is palette device
}

How to set it depends on the device. For a monitor, it's based on the video mode.
For a printer device it's based on the bitmap format selected into the dc. etc...

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: 8 bit bmp

himuskanhere4-Jun-07 18:45

himuskanhere

4-Jun-07 18:45

hey
my destination DC is not a palette device.
destination DC is my Monitor.
Can u plz send me code snipet which create 8 bit bitmap usning palette.
the palette aaray should be.....
static int ARGB[256][3] =
{
{0,0,0}, //0
{48,0,0}, //1
{48,48,48}, //2
{0,16,16}, //3
{32,32,32}, //4
{16,16,16}, //5
{0,48,0}, //6
{48,48,0}, //7
{0,48,48}, //8
{0,16,16}, //9
{80,80,80}, //10
{96,96,96}, //11
{96,96,96}, //12
{112,112,112}, //13
{128,128,128}, //14
{144,144,144}, //15
{160,160,160}, //16
{160,160,160}, //17
{176,176,176}, //18
{192,192,192}, //19
{208,208,208}, //20
{208,208,208}, //21
{208,208,208}, //22
{224,224,224}, //23
{224,224,224}, //24
{224,224,224}, //25
{240,240,240}, //26
{96,48,48}, //27
{96,48,0}, //28
{96,0,0}, //29
{96,0,96}, //30
{96,48,96}, //31
{160,0,96}, //32
{160,48,96}, //33
{160,0,32}, //34
{160,48,48}, //35
{160,48,0}, //36
{160,0,0}, //37
{160,96,96}, //38
{160,96,48}, //39
{160,96,0}, //40
{208,0,96}, //41
{208,48,96}, //42
{208,96,96}, //43
{208,96,0}, //44
{208,96,48}, //45
{208,48,48}, //46
{208,48,0}, //47
{208,0,0}, //48
{240,96,96}, //49
{240,0,112}, //50
{240,48,96}, //51
{240,0,96}, //52
{240,96,48}, //53
{240,96,0}, //54
{240,16,32}, //55
{240,80,80}, //56
{240,0,0}, //57
{240,128,128}, //58
{240,160,160}, //59
{240,160,160}, //60
{240,160,208}, //61
{240,96,208}, //62
{240,96,240}, //63
{224,16,208}, //64
{224,16,208}, //65
{240,0,176}, //66
{240,0,160}, //67
{240,48,160}, //68
{240,96,160}, //69
{208,0,144}, //70
{208,0,160}, //71
{208,48,160}, //72
{208,96,160}, //73
{240,0,208}, //74
{208,96,208}, //75
{208,0,208}, //76
{208,96,208}, //77
{208,48,208}, //78
{240,0,240}, //79
{240,48,240}, //80
{240,160,240}, //81
{240,208,240}, //82
{208,160,96}, //83
{208,160,48}, //84
{208,160,0}, //85
{208,160,48}, //86
{208,160,160}, //87
{240,208,160}, //88
{240,208,160}, //89
{240,208,192}, //90
{240,208,208}, //91
{208,160,208}, //92
{176,160,144}, //93
{208,208,160}, //94
{208,208,160}, //95
{208,208,160}, //96
{240,240,208}, //97
{240,240,208}, //98
{96,96,0}, //99
{96,96,48}, //100
{0,96,0}, //101
{48,96,0}, //102
{0,96,48}, //103
{48,96,48}, //104
{0,128,0}, //105
{96,160,48}, //106
{96,160,96}, //107
{48,160,96}, //108
{0,160,96}, //109
{0,160,48}, //110
{48,160,48}, //111
{48,160,0}, //112
{0,160,0}, //113
{48,208,0}, //114
{0,208,0}, //115
{96,208,0}, //116
{96,208,96}, //117
{96,208,96}, //118
{0,208,48}, //119
{48,208,48}, //120
{96,208,48}, //121
{0,208,96}, //122
{48,208,96}, //123
{0,240,0}, //124
{96,240,96}, //125
{48,240,48}, //126
{48,240,96}, //127
{0,240,96}, //128
{96,240,48}, //129
{96,240,0}, //130
{160,240,0}, //131
{160,240,48}, //132
{160,240,96}, //133
{192,224,192}, //134
{176,224,192}, //135
{176,224,192}, //136
{208,240,208}, //137
{208,240,0}, //138
{208,240,48}, //139
{208,240,96}, //140
{240,208,96}, //141
{240,208,48}, //142
{240,208,0}, //143
{128,128,0}, //144
{160,160,48}, //145
{160,160,64}, //146
{160,160,96}, //147
{176,192,0}, //148
{208,208,48}, //149
{208,208,96}, //150
{160,208,48}, //151
{160,208,96}, //152
{160,208,96}, //153
{160,208,0}, //154
{160,208,96}, //155
{240,160,96}, //156
{240,160,48}, //157
{240,160,0}, //158
{160,240,160}, //159
{240,240,0}, //160
{240,240,96}, //161
{240,240,48}, //162
{224,224,0}, //163
{160,240,160}, //164
{0,240,160}, //165
{48,240,160}, //166
{96,240,160}, //167
{48,240,160}, //168
{0,240,160}, //169
{48,208,160}, //170
{0,208,160}, //171
{0,208,160}, //172
{48,208,160}, //173
{96,208,160}, //174
{176,176,144}, //175
{48,96,96}, //176
{0,96,96}, //177
{0,128,128}, //178
{0,160,160}, //179
{96,160,160}, //180
{48,240,208}, //181
{0,240,208}, //182
{160,240,208}, //183
{0,208,208}, //184
{48,208,208}, //185
{96,208,208}, //186
{0,192,208}, //187
{160,240,240}, //188
{96,240,240}, //189
{0,240,240}, //190
{48,240,240}, //191
{96,240,240}, //192
{208,240,240}, //193
{208,240,240}, //194
{160,208,240}, //195
{160,208,240}, //196
{208,208,240}, //197
{160,160,208}, //198
{208,0,240}, //199
{208,160,240}, //200
{160,48,208}, //201
{160,0,208}, //202
{160,96,208}, //203
{208,96,240}, //204
{208,48,240}, //205
{176,80,192}, //206
{160,96,160}, //207
{160,0,160}, //208
{160,48,160}, //209
{128,0,128}, //210
{160,48,240}, //211
{160,0,240}, //212
{160,96,240}, //213
{96,0,160}, //214
{96,48,160}, //215
{48,0,96}, //216
{0,0,96}, //217
{0,48,96}, //218
{48,48,96}, //219
{0,0,112}, //220
{0,0,112}, //221
{0,0,128}, //222
{160,160,240}, //223
{48,48,160}, //224
{0,0,160}, //225
{0,48,160}, //226
{48,0,160}, //227
{48,96,160}, //228
{96,96,160}, //229
{0,96,208}, //230
{48,96,208}, //231
{0,0,208}, //232
{96,48,208}, //233
{48,48,208}, //234
{0,48,208}, //235
{0,0,240}, //236
{96,0,240}, //237
{96,96,240}, //238
{0,96,240}, //239
{96,48,240}, //240
{48,48,240}, //241
{48,96,240}, //242
{96,96,208}, //243
{96,160,240}, //244
{48,160,240}, //245
{0,160,240}, //246
{96,160,224}, //247
{96,160,224}, //248
{0,160,208}, //249
{96,160,208}, //250
{48,160,208}, //251
{0,192,224}, //252
{0,208,240}, //253
{48,208,240}, //254
{96,208,240} //255
};

thanks in advance..

Re: 8 bit bmp

Mark Salsbery5-Jun-07 4:43

Mark Salsbery

5-Jun-07 4:43

Given your palette, here's one way:

LONG lImageWidth = 320;
LONG lImageHeight = 240;
WORD wBitsPerPixel = 8;
  
LONG lBytesPerRow = (((lImageWidth * (long)wBitsPerPixel + 31L) & (~31L)) / 8L);
  
BITMAPINFO *pbmi = (BITMAPINFO *)new BYTE[sizeof(BITMAPINFO) + sizeof(RGBQUAD) * 255];
 
memset(pbmi, 0, sizeof(BITMAPINFO));
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biWidth = lImageWidth;
pbmi->bmiHeader.biHeight = lImageHeight;
pbmi->bmiHeader.biPlanes = 1;
pbmi->bmiHeader.biBitCount = wBitsPerPixel;
pbmi->bmiHeader.biCompression = BI_RGB;
pbmi->bmiHeader.biSizeImage = lBytesPerRow * lImageHeight;
//pbmi->bmiHeader.biXPelsPerMeter = 0;
//pbmi->bmiHeader.biYPelsPerMeter = 0;
//pbmi->bmiHeader.biClrUsed = 0;
//pbmi->bmiHeader.biClrImportant = 0;
 
for (int i = 0; i < 256; i++)
{
   pbmi->bmiColors[i].rgbBlue = (BYTE)ARGB[i][2]; 
   pbmi->bmiColors[i].rgbGreen = (BYTE)ARGB[i][1]; 
   pbmi->bmiColors[i].rgbRed = (BYTE)ARGB[i][0]; 
   pbmi->bmiColors[i].rgbReserved = 0; 
}
 
BYTE* pBitmapBits;
 
HDC hdc = ::GetDC(0);
HBITMAP hBitmap = ::CreateDIBSection(hdc, pbmi, DIB_RGB_COLORS, &pBitmapBits, NULL, 0);
::ReleaseDC(0, hdc);
 
if (hBitmap)
{
   // Initialize the bitmap bits to all black (index 0 in color table)   
   memset(pBitmapBits, 0, pbmi->bmiHeader.biSizeImage);
...
// do stuff with the new HBITMAP
...
   ::DeleteObject(hBitmap);
   delete[] (BYTE *)pbmi;
}

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: 8 bit bmp

himuskanhere11-Jun-07 1:38

himuskanhere

11-Jun-07 1:38

Thank u so much...

Born To Code

Problem While Restarting Filter Graph

amit_007_bond29-May-07 20:47

amit_007_bond

29-May-07 20:47

Hi All,

I am facing quite starnce problem.I am Capturing Audio Stream from TV Tuner Card and Play Back using DirectShow.First Time its work fine.But When i stop the filter graph or exit the application and again tried to restart it.The Audio is not captured.But After resttating my machine (PC) it again work fine.

Please let me know where i am wromg.

Thaks in Advance.

frustration CubeMapping_OpenGL

zqueezy29-May-07 8:38

zqueezy

29-May-07 8:38

hey everybody...
I hope someone can help me caus I'm trying to implement this cube mapping thing for two days now...
I've been to all those websites...
There must be some small mistake in my code and I just can't find it...

<br />
...<br />
(InitGL)<br />
CubeMappingAvailable = CheckOpenGLExtension("GL_ARB_texture_cube_map");<br />
<br />
myTextureLoader.LoadCubeMap("right.jpg",<br />
			"left.jpg",<br />
			"bottom.jpg",<br />
			"top.jpg",<br />
			"front.jpg",<br />
			"back.jpg",<br />
			&myCubeMap);<br />
<br />
// ...<br />
// TextureLoader::LoadCubeMap(char* fileRight,	char* fileLeft, char* fileTop, char* fileBottom, char* fileFront, char* fileBack, CubeMap* dest)<br />
// dest is my CubeMap-Class-Object<br />
<br />
glGenTextures(1, &dest->TextureID);<br />
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, dest->TextureID);<br />
<br />
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);<br />
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);<br />
<br />
LoadFromFile(fileRight, &dest->right, 1);   // no just represents the face<br />
LoadFromFile(fileLeft, &dest->left, 2);<br />
LoadFromFile(fileTop, &dest->top, 3);<br />
LoadFromFile(fileBottom, &dest->bottom, 4);<br />
LoadFromFile(fileFront, &dest->front, 5);<br />
LoadFromFile(fileBack, &dest->back, 6);<br />
<br />
<br />
// Loading (LoadFromFile) looks like this:<br />
(...)<br />
glTexParameterf(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);<br />
glTexParameterf(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);<br />
<br />
// cube is the int from above (face)<br />
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB+(cube-1),<br />
	 0,<br />
	 components,<br />
	 pTexture->Width,<br />
	 pTexture->Height,<br />
	 0,<br />
	 pTexture->Type,<br />
	 GL_UNSIGNED_BYTE,<br />
	 pImgData);<br />
<br />
// My drawing looks like this:<br />
glDisable(GL_TEXTURE_2D);<br />
glEnable(GL_TEXTURE_CUBE_MAP_ARB);<br />
glEnable(GL_TEXTURE_GEN_S);<br />
glEnable(GL_TEXTURE_GEN_T);<br />
glEnable(GL_TEXTURE_GEN_R);<br />
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, desCube->TextureID);<br />
<br />
// Drawing object Here...<br />
<br />
glDisable(GL_TEXTURE_GEN_S);<br />
glDisable(GL_TEXTURE_GEN_T);<br />
glDisable(GL_TEXTURE_GEN_R);<br />
glDisable(GL_TEXTURE_CUBE_MAP_ARB);<br />

Sorry for not posting more... but I think It's more a general mistake and I put everything in different classes and methods, so posting more might make everything more complicated...

thanx in advance
zqueezy

Re: frustration CubeMapping_OpenGL

zqueezy29-May-07 9:47

zqueezy

29-May-07 9:47

damn, I found it finally...
I had to add:

<br />
  glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_EXT);<br />
  glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_EXT);<br />
  glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP_EXT);<br />

after glTexImage2D

I cannot see really why, and many tuts left that out...

PABX Exchange

syed imran azmat28-May-07 7:06

syed imran azmat

28-May-07 7:06

i want to work on PABX Exchange but i dont have any idea about this, is there any built in API or Serial Classes in VB.NET can any one tell me about this how should i work on it

syed imran azmat

Re: PABX Exchange

Dave Kreskowiak28-May-07 16:43

Dave Kreskowiak

28-May-07 16:43

So, what does this have to do with Graphics? You may want to Google for "PABX VB.NET" for examples and discussions.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

32 bit to 8 bit itmap conversion

himuskanhere28-May-07 1:23

himuskanhere

28-May-07 1:23

Hey Friends,
I want to Convert 32 bit Bitmap tp 8 bit bitmap.
Here i have to used palette.
CAn any body tell me abt this conversion and about palete.
Thanks in advance.

Born To Code

Re: 32 bit to 8 bit itmap conversion

Mark Salsbery28-May-07 13:36

Mark Salsbery

28-May-07 13:36

See here[^]

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Data capture from FM tuner card.

amit_007_bond27-May-07 22:22

amit_007_bond

27-May-07 22:22

Hi,

please someone can let me know how i can capture data from FM tuner card.
either using windows wave APIs, directShow or directSound.

Thanks in Advance

Re: Data capture from FM tuner card.

Mark Salsbery28-May-07 13:38

Mark Salsbery

28-May-07 13:38

Have you tried searching for "audio capture" articles here at CodeProject?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Windows Theme/Skin

XTAL25625-May-07 15:05

XTAL256

25-May-07 15:05

Hi. I have always wanted to create custom themes/skins for WindowsXP and i recently downloaded WindowBlinds to do just that. I decided to delete it but instead want to know how to actually apply a skin (theme) to a single application. WindowBlinds can do it but i'm not sure how and i don't like the idea of a program messing around with my system files. I thought that i could create a file (.theme or .msstyle ?) and apply it. Does anyone know how to or more importantly where i could find how to do it. Just to be clear, i only want to skin one application not the whole desktop.
thanx

Customer in computer shop: "Can you copy the Internet onto this disk for me?"

embed an avi and jpg in same space

brucedw25-May-07 5:25

brucedw

25-May-07 5:25

I'm looking for a technique to embed an avi movie and a jpg image in the same space upon an onclick command for one or the other. I have the script to do either but need to be able to do both.

thanks,

brucedw

Direct3D+MCF transparency

NunoSantos23-May-07 10:05

NunoSantos

23-May-07 10:05

Hi everybody...

I've finally got to glue a direct3d render into a mfc dialog box...

Now, my next endevour....
I would really like to get my animation background ( i think it's called backbuffer) to be transparent, please...

I can set the background to a specific colour alright
(with: d3ddev->Clear(0,NULL,D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);)
, but i wasn't able to make it transparent

any thoughts? ideas? critics? proposals? spitting? lol

anyway, good night and thanks in advance

Nuno

Re: Direct3D+MCF transparency

NunoSantos25-May-07 4:14

NunoSantos

25-May-07 4:14

gosh....

i love you guys...

your thoughts have been so crystal clear that can barelly read them...

( considering some non-expensive reading-rehab clinics nearby )

^^
Nuno

Video on OpenGL window, from image frames

DoctorDoctor22-May-07 21:29

DoctorDoctor

22-May-07 21:29

Hi to all of you,

I am a new programmer on OpenGL.
I am currently working on an application where I have a Debian Linux PC with two usb industrial cameras,acquiring images at a rate of 25fps. Each image data is sent by sockets to a windows PC. The format of the received buffer at the windows PC side is buffer[0]='top left image pixel', buffer[640*480]='bottom right image pixel'. I want know to proccess these buffers an display a video on an OpenGL window at a similar frame rate, or even lower,i.e. even 5-10 frames per second will do for me.

I am using Dev-C++ on the windows PC.

Can anynone advised me with an appropriate approach?,i.e. what is I mean the most appropriate method to follow.

Cheers,

DoctorDoctor

Re: Video on OpenGL window, from image frames

El Corazon23-May-07 1:46

El Corazon

23-May-07 1:46

DoctorDoctor wrote:
Can anynone advised me with an appropriate approach?,i.e. what is I mean the most appropriate method to follow.

The easiest, and one line solution, for you is glDrawPixels()[^], you have the right format, direction is easily manipulated with glPixelZoom()[^] and it is compatible with all levels of OpenGL.

but... it does not make it available as a texture. Do you need it as a texture within OpenGL? what graphics card do you have? There are several solutions here, the best are avail on recent generation cards.

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

Re: Video on OpenGL window, from image frames

DoctorDoctor23-May-07 2:11

DoctorDoctor

23-May-07 2:11

Yes,

I need it as texture since its a 2D object. I managed to display a single frame. How can I redraw on the same window?

I am using

myInit();//reads in the pixels
glutDisplayFunc(myDisplay);// display callback function
glutMainLoop();// shows the window and loops to accepts and processes input events

Myproblem is that now I need to continue displaying frames on the same opened OpenGL window, in order for it to look like video.

Re: Video on OpenGL window, from image frames

El Corazon23-May-07 6:31

El Corazon

23-May-07 6:31

DoctorDoctor wrote:
that now I need to continue displaying frames on the same opened OpenGL window

what you probably want is a PBO (Pixel Buffer Object). This allows rapid transfer of texture objects to and from the card.
http://http.download.nvidia.com/developer/Papers/2005/Fast_Texture_Transfers/Fast_Texture_Transfers.pdf[^] you can find more information in the OpenGL SDK from nVidia, Version 9 had the demo of the PBO transfers, not sure about 10.
http://download.developer.nvidia.com/developer/SDK/Individual_Samples/3dgraphics_samples.html[^]
http://developer.nvidia.com/object/sdk-9.html[^]
http://developer.nvidia.com/object/sdk_home.html[^]

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

DirectX help!!

Young.wu22-May-07 19:28

Young.wu

22-May-07 19:28

I'm a newer in directx ,I cant find many directx functions and structures in msdn,likeLPDIRECTDRAWSURFACE7, BltFast. please who can tell me where i can find them?

Re: DirectX help!!

Sarath C23-May-07 2:35

Sarath C

23-May-07 2:35

Check the documentation to include which file to include and make sure that the include directory of DirectX SDK is there in the Include Directories of Visuatio Studio (Check Tools->Option Menu)

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts, An Article - Understanding Statepattern

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