Required Extensions:

OpenGL OpenGL: Basic Coding
1

Hey All,

      Another noob's simple question here.

I want to use these

Required Extensions:
WGL_ARB_extensions_string
WGL_ARB_render_texture
WGL_ARG_pbuffer
WGL_ARB_pixel_format

How to make my code compile-able?

2

By reading this :
http://www.opengl.org/wiki/Getting_started#OpenGL_2.0.2B_and_extensions

Use Glee or GLEW to make it easier.

P.S: WGL_ARB_pbuffer is obsolete and a pain to use, use FBO instead if you can :
http://www.opengl.org/registry/specs/ARB/framebuffer_object.txt

3

I love you.

4

okie I am stuck at here.

The problem is if I pass WGL_BIND_TO_TEXTURE_RGBA_ARB or WGL_BIND_TO_TEXTURE_RGB_ARB. I get back count == 0 which means I don’t get any piexel format :(.

int attr[] =
{

WGL_SUPPORT_OPENGL_ARB, TRUE, 
WGL_DRAW_TO_PBUFFER_ARB, TRUE, 
WGL_BIND_TO_TEXTURE_RGBA_ARB, TRUE,
WGL_RED_BITS_ARB, 8,
WGL_GREEN_BITS_ARB, 8,
WGL_BLUE_BITS_ARB, 8, 
WGL_ALPHA_BITS_ARB, 8,
WGL_DEPTH_BITS_ARB, 24, 
WGL_DOUBLE_BUFFER_ARB, FALSE, 
0,0
};

float fAttributes[] = {0,0};

wglChoosePixelFormatARB(DeviceContext,attr, fAttributes, 1,&PixelFormat,&count);

5

okie I am stuck at here.

The problem is if I pass WGL_BIND_TO_TEXTURE_RGBA_ARB or WGL_BIND_TO_TEXTURE_RGB_ARB. I get back count == 0 which means I don’t get any piexel format :(.

int attr[] =
{

WGL_SUPPORT_OPENGL_ARB, TRUE,
WGL_DRAW_TO_PBUFFER_ARB, TRUE,
WGL_BIND_TO_TEXTURE_RGBA_ARB, TRUE,
WGL_RED_BITS_ARB, 8,
WGL_GREEN_BITS_ARB, 8,
WGL_BLUE_BITS_ARB, 8,
WGL_ALPHA_BITS_ARB, 8,
WGL_DEPTH_BITS_ARB, 24,
WGL_DOUBLE_BUFFER_ARB, FALSE,
0,0
};

float fAttributes[] = {0,0};

wglChoosePixelFormatARB(DeviceContext,attr, fAttributes, 1,&PixelFormat,&count);

Please Help me out :’(

6

http://dedebuffer.chez.com/
Try the truemotionblur_RTT.exe : if it works, you can check its code.
Otherwise, it propably means your video card or display driver does not support pbuffers. Which card and drivers do you have ?

7

But why exactly do you WANT to use pbuffers? Use the framebuffer object extension (FBO), it is the standard today and it is MUCH easier.

Jan.