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Questions tagged [nvidia]

Nvidia is technology company that designs graphics processing units (GPUs) like the GeForce line of graphics cards, and system on a chip units (SOCs) like the Tegra used in Nvidia Shield tablets. In addition to hardware, Nvidia has also created some game development related APIs, including `PhysX` & `CUDA`, which have their own respective tags. Use the `Nvidia` tag for questions about developing for Nvidia hardware specifically.

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How does raytracing triangle meshes with RTX work internally?

Raytracing a huge bunch of triangles the naive way (ie. testing each ray against every single triangle) would be humongously slow, which is why raytracers use optimizations to greatly reduce the ...
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1answer
51 views

nvidia SSAO visible errors

I am trying to add ssao effect to a visualization application but there are errors in resulting image. I am using code from https://github.com/nvpro-samples/gl_ssao . Errors occur in rapidly changing ...
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1answer
201 views

Nvidia RTX ray tracing OpenGL extension

I can't seem to find any OpenGL headers for the RTX ray tracing extension, seems like they only want you to use Vulkan and optix with RTX
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0answers
73 views

Why are committed resources better than placed resources?

This NVIDIA document regarding dos and don'ts in DirectX 12 states the following: Use committed resources where possible to give the driver more knowledge This allows the driver to better ...
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0answers
101 views

Does Unreal Engine comply with Nvidia Control Panel settings?

I tried setting DSR (Dynamic Super Resolution) in Nvidia Control Panel (DSR - factors set to 4x and DSR - Smoothness set to 33%) to get better anti-aliasing quality in Unreal Engine 4, but as it ...
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1answer
129 views

Cutout fragment shader pixels arent square

It has been solved, link to the final shader: Shader The problem (as portrayed by the image below) is that the pixels seem to be, for lack of a better word, cut off. I wish to either display a pixel, ...
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1answer
65 views

Nvidia High Performance Processor Setting leads to graphical bug (Seizure Warning) with current lighting system, drawing completely in the shader code

I followed the Lighting tutorial on learnopenGL, modifying some of the code to work in a 2D game engine. Everything was looking great and my team got our game done and the lights were quite simple for ...
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2answers
453 views

Error with LibGDX on Android Studio : Exception in thread “LWJGL Application” java.lang.NullPointerException

After a long time of research, I saw that in January 2017, NVIDIA put a new driver that made crash every application running with LibGDX. I would like to create a game with this library on Android ...
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1answer
238 views

Any idea why my openGL camera is stuttering only on the X axis? and only when using nvidia drivers?

As part of my assignment, I've been building a scene graph framework in C++/OpenGL. My camera works absolutely fine going backwards and forwards, but when I strafe / move on the X axis, the camera ...
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0answers
526 views

GeForce FPS Counter is not displaying and G-SYNC is not working on games developed using Unity

I have developed a small game for learning purpose and here is src of that, when I play the game GeForce FPS Counter is not displaying. I thought there might be some kind of bug in my src. So, I ...
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2answers
75 views

DirectX function calls' duration

Today I downloaded Nvidia Nsight in order to profe my game GPU side and I came across some doubts: I can't find only any resource of what are the average times for the different DirectX functions (...
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1answer
120 views

Any Code Based Driver Optimizations for Far-Object Rendering?

Are there any video card driver optimizations available to developers to mitigate considerable framerate drops (%50+) which may be caused by Draw Distance defects in a game? For example, when using a ...
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1answer
887 views

How do I integrate Nvidia Ansel into my Unity game?

I want to be able to use the super high resolution image capabilities that ansel have to offer but I don't know how to add it as the only thing that i can find are C++ libraries on their website.
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2answers
749 views

CG: 4+ color gradient

I am trying to write a shader that takes multiple colors and applies them to a B&W texture. Now, 3 colors works just fine, but i will need 6 in order for this to function. If somebody could please ...
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1answer
450 views

Configuring Implicit Multi-GPU Rendering Driver Settings Programmatically

What is available to game developers to take advantage of implicit multi-GPU rendering technologies as of 2016? For this question I will only be asking about Nvidia's SLI and AMD's Crossfire ...
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1answer
411 views

Is glxinfo saying that the 980 GTX doesn't support a 32 bit depth buffer?

I've been using the glxinfo command (glxinfo -v) to explore the supported framebuffer configurations. There are two values relating to depth, "depth" and "depthsize." According the source, it appears ...
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0answers
236 views

GLSL shader with light colors wrong on nvidia optimus

So, I built some code to draw a spinning cube with a red light on the right side, and a blue one on the left. I run it on my laptop with optimus graphics, and on my desktop with nvidia. On the laptop, ...
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1answer
612 views

Black Screen when using High-Performance NVIDIA Processor

I have an issue where my program renders a black screen on other computers. I narrowed it down to when a different graphics card is being used. When I run the program using Integrated Graphics (...
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1answer
2k views

SDL2, OpenGL, Nvidia laptop screen tearing

EDIT 2017-05-14 dvb. Issue still active to this very day, see geforce forum link in main question. Note 3: "Stoltverd" has posted a "fix guide" on geforce forum. It has workarounds for non-OpenGL ...
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0answers
48 views

Shed some light on this Nvidia Pascal slide?

What are the meanings of all the terms in this slide? Why is the correct operator to roughly compute (guesstimate) the improvement in performance multiplictive and not instead bottle necked by the new ...
6
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1answer
593 views

Why do I see spaces between polygons in OpenGL, only on an Nvidia 720M?

I'm developing an OpenGL application that renders .obj 3D models. I use VBOs to render the polygons. Using the same code, the loaded models appear fine on all PCs,...
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2answers
746 views

D3D12 device not supported

In the last days, I tried to learn the basics of Direct3D12, using some online resources and tutorials/demos. After failing to run the demos, I created a new project in Visual Studio 2015, added the ...
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1answer
453 views

Nvidia Nsight 4.6 VS Edition. The Graphics debugger can't find glew32.dll

I'm trying to debug some textures and FBO's with Nvidia Nsight 4.6 VS Edition. But when I select either "Start CUDA debugging" or "Start graphics debugging" I get an error. "The program can't start ...
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1answer
293 views

Why does glBindVertexArray sometimes fail (but mostly not)?

Quick outline: Test program that loads and displays big (3k x 4k) 16bit gray scale images (ca. 32MB). Using modern OpenGL (eg. 3.3 or so) with shaders VBOs VAOs etc. Running on Windows with OpenTK (...
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1answer
2k views

How do I get GLEW to use my Nvidia GPU instead of an integrated Intel card?

I'm new to graphics programming, though not to coding generally. I've been learning opengl from the OpenGL Superbible, 6th Edition. I was trying out the shader examples from the book but couldn't get ...
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1answer
312 views

OpenGL Post Processing Introducing Artifacts on Certain Systems

Playing around with God-Rays in my framework, I was greeted with the following artifacts on my laptop: The artifacts themselves act almost like noise, flickering around the image rapidly. They also ...
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2answers
815 views

Render-to-texture doesn't work on nvidia cards. OpenGL 3.3

I've implemented some postprocessing effects (DOF, HDR, Bloom) into my engine. I've tested it on AMD card which supports OpenGL 4.2. Yesterday I've made a test on NVidia card which supports only ...
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1answer
506 views

NVidia control panel SSAO not working

I am just before implementing screen space ambient occlusion in my game, but first I wanted to try enabling it from NVidia control panel only to find out that it is greyed out so that I can not enable ...
2
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1answer
2k views

Why am I not getting an sRGB default framebuffer?

I'm trying to make my OpenGL Haskell program gamma correct by making appropriate use of sRGB framebuffers and textures, but I'm running into issues making the default framebuffer sRGB. Consider the ...
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2answers
13k views

Why does my machine render OpenGL using my onboard chipset instead of my graphics card?

I'm following an OpenGL tutorial series at opengl-tutorial.org, but have run into a problem: The following lines: ...
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0answers
462 views

Drawing cube map and texture array on NVidia cards doesn't work

I have small problem with shadow maps preview. After binding shadow framebuffer I bind proper texture to store depth in it and then render the whole scene. When I read that values in shader to ...
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1answer
621 views

Basic shadow mapping fails on NVIDIA card?

Recently I switched from an AMD Radeon HD 6870 card to an (MSI) NVIDIA GTX 670 for performance reasons. I found however that my implementation of shadow mapping in all my applications failed. In a ...
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1answer
92 views

How should I choose a graphics card that's right for my needs? [closed]

I'm developing my own game using Ogre3D, and I'm want to implement things like SSAO, dynamic shadows, AI, physics, etc...and I know my current card is barely gonna be able to handle it. So my ...
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0answers
416 views

How does QCSAA actually work in nVidia GPUs? [closed]

I know the principles behind how QCSAA is supposed to work (as opposed to how, say, regular CSAA works) and subjectively after some testing I like the style it lends to the image enough that I'm ...
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1answer
557 views

Running advanced floating point calculations on the GPU?

I want to learn how to use AMD Stream and NVIDIA CUDA (PhysX) to calculate things such as locations. I have not yet found where to get the SDK for these (I can't test the CUDA things because I have a ...
2
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1answer
112 views

Precomputing SSAO causes driver timeout

I was trying to do a pre-calculations of an SSAO effect by rendering normals and depth on a cubemap and doing a second ssao pass on each of these faces. The problem is I'm getting a timeout: "the ...
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0answers
278 views

Vertex shader to Pixel shader NVIDIA problem - restarting drivers

I have problem with my shader on NVIDIA cards. On AMD it's working right. Shader Builder exported CODE: ...
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2answers
765 views

How to apply a filter to the screen of a running program?

The idea is to take old games without modifying them, but have the graphics card apply a series of filters to their output before sending them to the monitor. A very crude example would be to take a ...
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1answer
2k views

Is the series of books “GPU Gems” still good for a modern OpenGL 3.0+ approach?

I noticed that this series of free books from Nvidia is really popular and well know in the devs world, the problem is that is simply old; you would recommend to read those 3 books to a developer that ...
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1answer
10k views

GLSL if-else statement unexpected behaviour

This question is related to this other one I asked a few days ago. Because I have finally get to the bottom of the issue, I have rather preferred to open a new question with a more detailed ...
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votes
2answers
2k views

OpenGL behaviour depending on the graphics card?

This is something that never happened to me before. I have an OpenGL code that uses GLSL shaders to texture a 3D model. The code involves a lot of GPU texture processing, blending, etc... I wanted to ...
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1answer
2k views

Get video chipset manufacturer in Direct3D

I'd need to know if the video chipset Direct3D runs on is from Nvidia, AMD or Intel. Is there a way to do that?
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1answer
2k views

GLSL compile error when accessing an array with compile-time constant index

I have this shader that works well on my computer (using an ATI HD 5700). I have a loop iterating between two constant values, which is, afaik, acceptable in a glsl shader. I write stuff in two arrays ...
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1answer
166 views

Can't run Nvidia PracticalPSM sample in debug mode

I want to add PSM (Prespective shadow map) to my engine but I have problems with that. I think the problem is somewhere in my math code so I want debug Nvidia PracticalPSM sample and compare the math ...
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1answer
737 views

Valve Source Engine / UDK and CUDA

Do any games use the GPU for more game tasks than just rendering, as a way to reduce the game's load on the CPU? I'm most interested in games which use either Valve's Source engine or the UDK. Is ...
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0answers
843 views

Joint constraints in PhysX

I'm trying to use PhysX for my physics engine. I'd like to use spherical joints, but I'm having trouble with the constraints. All of the examples that I've found refer to SDK v2.8. I'd like to ...
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4answers
1k views

Advice of feasibility of final year project

Final year student from an IT college in Ireland. I'm not really sure if this is the right place to post but It seems that graphics programming is very closely related to games and the people here ...
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0answers
384 views

Why OpenGL provided with latest GeForce drivers is so extremely slow?

I'm writting a code in OpenGL and using two computers - an old and a new one. On the old computer (which I use for debugging/creating implementation for the old GL) I have GeForce 5500 FX. Before ...
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1answer
185 views

optimal pixel-read back strategy

I need to render certain scenes and read the whole image back in main memory for further processing which is not suitable for rewriting into shaders of CUDA, and saving to disk. I've search for this ...
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1answer
355 views

How can I test shaders for nVidia on an ATi system?

I and our other devs have ATi graphics cards. However we have encountered that some shaders that compile without warnings on ATi don't compile at all on nVidia. The problems are trivial to fix, but ...