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Can u plz explain how to draw 8 bit bitmap using palette.
The bitmap should be of 256 color,
thnaks
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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
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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.
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rahul.shendurnikar wrote: how to know whether the destination DC is a palette device or not?
if (GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE)
{
}
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
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 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..
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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;
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)
{
memset(pBitmapBits, 0, pbmi->bmiHeader.biSizeImage);
...
...
::DeleteObject(hBitmap);
delete[] (BYTE *)pbmi;
}
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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Thank u so much...
Born To Code
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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.
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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 />
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);
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 />
(...)<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 />
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 />
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 />
<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
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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...
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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
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So, what does this have to do with Graphics? You may want to Google for "PABX VB.NET" for examples and discussions.
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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
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See here[^]
"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder
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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
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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
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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?"
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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
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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
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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
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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
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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)
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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.
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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?
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