sadly the driver (to be specific 185.85 (latest) on nvidia GF 7800 under vista x64) returns GL_FRAMEBUFFER_UNSUPPORTED_EXT for (GL_LUMINANCE, GL_LUMINANCE16F_ARB, GL_HALF_FLOAT_ARB) format.
But under directX i could use D3DFMT_R16F as a rendertarget - so one channel 16bit float rendertargets are supported on the hardware.
That’s why i’m asking about the query - to se what singlechannel half float format i could use in my opengl app for FBO on that particular hardware.
What are the hardware requirements for OpenGL 3.0 to work ?
What nvidia hardware is minimum for openGL 3.0 to work ?
It is 6xxx series, 7xxx series or the first one is 8xxx series
(i could create opengl 3.0 context on gf 8800 GT - so 8xxx series works fine - but my app needs to run on 6xxx series too - i do not own for example gf 6800 to check if it could handle gl 3.0)
From the programmer point of view there realy should be some extension (or better standard :)) to query hardware capabilities about what formats are supported for FBO