Ok that's embarassing I have a high degree in maths but my math is not good but AMD OGL implementation is worse, I thought that it was a bug due to requesting exact size of shared mem but now bug...

heard at GTC and AMD summits..

Ok I think this should be standarized in OGL:
*a comprehensive spec exposing standard way to query support and expose ability to access host mem (buffers textures) from GPU and/or viceversa unifying...

Hi,
I have been testing new OGL compute shader and storage buffer objects extension and found following bugs (13.4 on 7950):
(please note all the samples I use for testing this work correctly on...

Ok Alfonse,
you make me reason harder but I still have some reason..
let's see..
1. note I say that adding GL_NV_gpu_shader5 shader works so seems i'm not violating OGL too much..
2. Sorry for...

Ok I post a minimal repro case:


#version 430 core

#define TILE_RES 16

layout(binding = 0) buffer cbPerFrame
{
mat4x4 g_mProjectionInv;

Hi defining a tess control shader gl_PerVertex using explicit sizing with gl_MaxPatchVertices fails compilation saying it requires:
#extension GL_NV_gpu_shader5 : enable

as this is a GLSL...

First sorry for poor posting I'm using semicolons of course but not posted here.. also I have another Storage buffer or uniform buffer and it contains g_mProjectionInv see here (I cleaned semicolons...

UPDATE:Sorry for poor code pasting I was testing correct code (with semicolons and defined g_mProjectionInv like mat4x4 so doesn't change any observation)
Hi I seem to have found a bug using storage...

Hi,
similar to GL 4.3 adding a image_size request function in GLSL seems GL is still lacking is that you can't get # of samples of textures and images in shader via some GLSL function.. note D3D...

UPDATE: Sorry for mistake Nvidia supports it with this shader altough I tested other formats than rgba8 and get false impresion..
Interesting that actually even Nvidia doesn't support it!


I...

Hi Pat,
Is too much too ask for NV removing this check (barriers in control flow) in assembly *compute shader* code so we can start playing with advanced compute codes that require it?
can we...

Alfonse wouldn't be better to say hey it's a bug in spec definition after all is some days old and only implementd by Nvidia right now.. and we have two options:
1. spec doesn't prohibite barriers...

Many thanks for responses Christoph and Pat!
some updates on my findings:
First I think that comment about not currently possible to use codes that have barriers with control flow is correctly to...

I have fixed all using
.. thanks alfonse..

Another bad news altough this would be Nvidia only anyway for now: pointers on compute shaders not working on Nvidia..

I have tried to answer...

From post below I want to ask some questions/suggestions:
*Would be good similar to Nvidia exposing NV_CG_shader extension for allowing "some" Cg functions (and syntax?) in GLSL code if exposed some...

One question is compute shader stage being exposed in Nvidia Cg language (where to ask?) similar to tesselation stages where added in Cg 3.0.. also if not, really another question is if Nvidia Cg...

Also two questions before second bug report..
1.is multi_draw_indirect fully supported in current Nvidia HW (and Fermi) without CPU support in driver or is implemented some part in software I say...

First is Nvidia monitoring OpenGL 4.3.0.0 sample pack by g-truc and aware of three samples not working..

I'm concentrating on two I'm more interested first in 430-image_store sample I get I think...

Someone with Ivy bridge (3rd gen intel processors) willing to post opengl info and extensions (opengl extensions viewer) with latest drivers? (2696 or 2712)
thanks.

Hi aqnuep,
thanks for your response I'm lazy enough for not reading the specs well enough..

Hi frank li,
thanks for your detailed clarifications so now I think i have converted the code to be glsl complaint.. but as I pointed even with all this fixes code fails to run AMD drivers and as...

Hi aqnuep true some are optional arb extensions but would be nice to have specially for me ARB_cl_event..
Finally i forgot to add that binary shaders now in Nvidia have no source attached in it but...

Glad you liked but all merit is for you I have only patched thinks that AMD didn't seems to eat well.. :-)

Also being this a Nvidia specific optimization would'n be better to use CUDA OpenGL interop and use two streams using async memcpies from/to pinned mem so we would make use of two copy engines with...