GZDoom Error

I have been using ZDoom since September, since GZDoom says this:

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Fatal Error - GZDoom 4.10.0 64-bit

DOOM 2: Hell on Earth

Execution could not continue.

Unable to load shader Default:

Init Shader 'Default':

Vertex shader:

Vertex shader was successfully compiled to run on hardware.

Fragment shader:

Fragment shader was successfully compiled to run on hardware.

Linking:

Vertex shader(s) failed to link, fragment shader(s) failed to link.

unexpected error.

unexpected error.

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I don't even want any kind of shaders, I just want to play regular doom, that is unless these shaders are necessary. 

Computer info (i got most of this from the stickers on it)

Acer Aspire Laptop

Windows 7 OS

Quad Core and AMD Radeon Graphics.

A8 Vision AMD

i don't want to type the whole thing if this is an easy fix.

Shaders are a necessary component of modern graphics APIs. Make sure your graphics drivers are up to date, otherwise you'll need to use an older version of GZDoom or pick a different source port.

21 minutes ago, Edward850 said:

Shaders are a necessary component of modern graphics APIs. Make sure your graphics drivers are up to date, otherwise you'll need to use an older version of GZDoom or pick a different source port.

last time i checked graphic drivers was august when i reformatted my computer.  where can i check older versions of GZDoom, and are they as good as the newest version?

Where's that hero that could port GZDoom to DirectX so Windows users could wave goodbye to all this madness?

10 minutes ago, Darkcrafter07 said:

Where's that hero that could port GZDoom to DirectX so Windows users could wave goodbye to all this madness?

I'm not the only user to experience these issues? let me guess, people on apple mac have no trouble? 

btw what is DirectX?

DirectX, OpenGL, Vulkan are all different APIs - an interface between your OS and computer parts that links them together. DirectX is Microsoft API that dominates the market and supported the most due to the fact that gamers money lays in PC, then there come OpenGL it's an open source and cross-platform API. OpenGL has been deprecated and Vulkan is like being a next generation OpenGL. The other issue here is that OpenGL by itself really sucked before version 3.3 came out (2010) while DirectX rocked since DirectX9 times (Crysis).

Chances you pick a cheap and a really old card and fire up a directx game (made for windows) and it works like a charm are high, it will also look more or less the same across all video cards manufacturers like amd, intel and nvidia, just having different fps.

It's only now that the latest OpenGL4.6 version has been finally supported by all manufactures and Vulkan is still being kind of buggy on some even recent cards.

DirectX can't work on mac, android, ios and linux and to make it work there you need the software to be written in OpenGL or Vulkan or to be emulated via "wrappers". That's the reason why GZDoom is OpenGL/Vulkan - because it works everywhere. The best and least troublesome manufacturer you can rely upon is nvidia, it supports them all DirectX, OpenGL, Vulkan. AMD never had a decent OpenGL support and something always worked wrong, so with AMD you have to go with Vulkan and DirectX. Intel cards have a good OpenGL support but bad Vulkan (it's newer), so with Intel cards go by DirectX and OpenGL.

Oh you have AMD Radeon Graphics, it's bad at OpenGL, by going with AMD you want to prefer Vulkan, only if it's supported by your card hehe.

24 minutes ago, DoomGuy999 said:

I'm not the only user to experience these issues? let me guess, people on apple mac have no trouble? 

No he's simply misrepresenting the problem. You are having issues with OpenGL shader compilation, GZDoom is requiring a newer standard than your graphics driver fully supports. Windows has nothing to do with the issue, it's between you and your graphics card vendor. DirectX can have similar problems, and GZDoom supporting it wouldn't mean you could run GZDoom if it (very likely) used a newer standard, given it'll need something like DX11 or 12 to match the Vulkan API.

44 minutes ago, DoomGuy999 said:

where can i check older versions of GZDoom, and are they as good as the newest version?

https://zdoom.org/files/gzdoom/bin/

They are older versions of GZDoom, it's rather self descriptive.

I just googled what A8 Vision AMD is - Radeon HD 7640G, released June 1 2012. Of course it will not support Vulkan as it's too old. The only way you can run GZDoom on your system is via OpenGL, being released on 2012 it must support OpenGL3.3 at least, so please install drivers from the official AMD site, so your system must be able to digest the newest GZDoom.

https://www.amd.com/en/support/apu/amd-series-processors/amd-a8-series-apu-for-laptops/a8-4500m-radeon-hd-7640g