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74 commits

Author SHA1 Message Date
Magnus Norddahl
e161bba146 - Specify shader uniforms from ZScript 2017-07-03 22:30:49 +02:00
Magnus Norddahl
ee6d7cf17e - Add initial postprocess shader support to GLDEFS file 2017-07-03 01:26:02 +02:00
Magnus Norddahl
85a9984807 - Add OpenGL ES 3 support to GL renderer 2017-04-06 23:34:42 -04:00
Christoph Oelckers
9e70771da3 - Added a check to allow shader storage buffers on GL 4.3 Intel drivers. It doesn't work if GLSL version is set to 4.0 and the feature activated via extension. 2017-03-11 20:14:18 +01:00
Magnus Norddahl
b660493051 Add menu option for disabling shadow maps and detecting if storage buffers are available or not 2017-03-10 19:10:40 +01:00
Magnus Norddahl
0d1deddae5 Bind shadow map texture for main.fp and sample from the shadowmap texture 2017-03-02 19:10:57 +01:00
Christoph Oelckers
12d073a27d - objectcolor stuff. 
# Conflicts:
#	src/gl/renderer/gl_renderstate.cpp
 2017-01-28 19:06:21 +01:00
Rachael Alexanderson
9a777f719b - Added "gl_bandedswlight" to reduce the software light emulation gradient to 32 levels. 2017-01-24 22:24:53 +01:00
Christoph Oelckers
5a4a5a17db - added core lump checks for ZScript. 
- load internal shaders only from file 0. This does not contain aborts, like most of the other checks,but it will now refuse to load any core shader file from anything but gzdoom.pk3.
 2017-01-23 01:56:15 +01:00
Magnus Norddahl
00e72028ef Add another gbuffer with normal data and make ssao pass use it 2016-10-05 07:57:27 +02:00
Magnus Norddahl
ecb57d6cd9 Merge remote-tracking branch 'gzdoom/master' into ssao 
# Conflicts:
#	src/gl/renderer/gl_renderer.cpp
#	src/gl/scene/gl_scene.cpp
#	src/gl/shaders/gl_shader.cpp
#	wadsrc/static/language.enu
#	wadsrc/static/menudef.zz
 2016-10-04 00:01:03 +02:00
Christoph Oelckers
4eb5f10b02 - use normals to have proper light attenuation. So far only implemented for walls and flats. Models are planned but need some thinking about how to efficiently collect all required lights for an object. 2016-10-03 16:09:32 +02:00
Magnus Norddahl
9af34bac69 Add gbuffer pass support to FShaderManager and FRenderState 2016-09-25 00:22:32 +02:00
Christoph Oelckers
8b6e09ca09 - changed the license of the OpenGL renderer to LGPL v3. 
This was done to clean up the license and to ensure that any commercial fork of the engine has to obey the far stricter requirements concerning source distribution. The old license was compatible with GPLv2 whereas combining GPLv2 and LGPLv3 force a license upgrade to GPLv3. The license of code that originates from ZDoomGL has not been changed.
 2016-09-14 20:01:13 +02:00
Christoph Oelckers
3389a5a74e - removed most of the specific options for legacy hardware and consolidated them in one variable (does not work yet.) 2016-09-01 11:52:52 +02:00
Christoph Oelckers
0f0dc2c852 - implemented buffers for GL 3.x. These only get mapped during the data collection pass so the order of some things is different here. 2016-08-29 10:43:03 +02:00
Christoph Oelckers
250be72939 - added handling for drawing with uniform vertices. It draws something but in the wrong place. Right now I have no idea what's happening... 2016-08-22 15:31:23 +02:00
Christoph Oelckers
7ba5acfb35 - added quad drawer interface so that this part can be done without altering a vertex buffer. 
So far it's only the framework, the new code is not active yet.
 2016-08-22 14:00:25 +02:00
Magnus Norddahl
d380d765c9 OpenGL object labels and debug groups 2016-08-17 23:18:47 +02:00
Christoph Oelckers
9c9edbffdb - on older ATI drivers where the clip planes are broken, only disable the clip planes themselves, but not OpenGL 3.x so that dynamic lights still work as intended. 
- only disable clip planes on Windows, but not on Linux or macOS.
- If a driver reports full OpenGL 4.5 support, assume that all features are working properly.
 2016-08-08 12:55:09 +02:00
alexey.lysiuk
7de242930a Removed obsolete gamma correct shader used on macOS only 2016-07-30 15:30:35 +03:00
Magnus Norddahl
5849c83028 Added bloom and tonemap to menus 
Added gl_renderbuffers CVAR that disables render buffers
Added patch shader support to FShaderProgram
Added OpenGL 2 fallback support to render buffers
 2016-07-29 21:31:20 +02:00
alexey.lysiuk
44b019413c Implemented gamma correction in OS X native backend using shader effect 2016-05-02 10:04:09 +03:00
Christoph Oelckers
47064e24c9 - only bind the uniform buffer if it is actually going to be used. No need to check if we are use a shader storage buffer. 2016-05-01 12:01:44 +02:00
alexey.lysiuk
1deb9742de Do not call UBO functions when no extension available 2016-05-01 11:46:49 +03:00
alexey.lysiuk
461c97d25b Fixed remaining issue with shader patching for old OpenGL 2016-04-30 16:28:19 +03:00
Christoph Oelckers
21283b18f4 - preparations for using clip planes on line portals. 2016-04-29 01:48:06 +02:00
Christoph Oelckers
09f54b0940 - cleaned up the clip plane management for portals. 
Unfortunately the math behind the old clip planes is utterly impenetrable and so poorly documented that I have no idea how to set that up, so it is deactivated for now. It wasn't working anyway.
 2016-04-27 00:41:00 +02:00
Christoph Oelckers
3b1500438d - got rid of VAO's. they have no impact on performance and are a general nuisance if some render paths cannot use them. 
- cleaned up gl_interface and removed gl.compatibility.
 2016-04-26 16:26:34 +02:00
Christoph Oelckers
f066457a48 - add shader patching to allow running the engine with GLSL 1.2. 
- made some initial preparations for the shader-less fallback path.
 2016-04-26 15:26:52 +02:00
Christoph Oelckers
090d13b915 - updated gl_interface to deal with older GL versions. 
- added the framework for allowing multipass textured dynamic lights again.
 2016-04-26 15:20:26 +02:00
Christoph Oelckers
fc57180d7e - added necessary state to implement 3D light splitting using hardware clipping planes. 2016-01-30 23:01:11 +01:00
Christoph Oelckers
45526c2769 - basics for using hardware clip planes to split translucent stuff by 3D floor planes. 2015-04-05 18:55:21 +02:00
Christoph Oelckers
89ce0b8cb7 - test if GLSL version 1.4 can handle uniform buffers on old Intel hardware without making problems... 2014-10-22 16:54:26 +02:00
Ralgor
5cc43137a1 Only require OpenGL 3.0 compatibility profile. 2014-09-14 14:43:42 -05:00
Christoph Oelckers
c6f4c0b6f0 - fixed: FMaterial's tex pointer could be accessed before it was set. 
- allow more than two texture units in shaders.
 2014-09-09 10:03:34 +02:00
Christoph Oelckers
a63871d170 - at least for Intel GMA we need shaders without 'discard' to render non-transparent stuff. The performance penalty is rather hefty here. 2014-08-02 21:06:34 +02:00
Christoph Oelckers
e35fefdc06 - better rebind the active shader after updating the matrices. 2014-08-02 11:59:04 +02:00
Christoph Oelckers
b2860a1d63 - it looks like glProgramUniform is not working correctly with Intel drivers, so better forget about it for setting the view and projection matrices. Even on NVidia the time difference can only be measured in microseconds per frame so it's not a big loss. 2014-08-02 11:57:42 +02:00
Christoph Oelckers
a8e9c1832f - decided to restrict the 2.0 beta to OpenGL 4.x with GL_ARB_buffer_storage extension and removed all code for supporting older versions. 
Sadly, anything else makes no sense.
All the recently made changes live or die, depending on this extension's presence.
Without it, there are major performance issues with the buffer uploads. All of the traditional buffer upload methods are without exception horrendously slow, especially in the context of a Doom engine where frequent small updates are required.
It could be solved with a complete restructuring of the engine, of course, but that's hardly worth the effort, considering it's only for legacy hardware whose market share will inevitably shrink considerably over the next years.
And even then, under the best circumstances I'd still get the same performance as the old immediate mode renderer in GZDoom 1.x and still couldn't implement the additions I'd like to make.

So, since I need to keep GZDoom 1.x around anyway for older GL 2.x hardware, it may as well serve for 3.x hardware, too. It's certainly less work than constantly trying to find workarounds for the older hardware's limitations that cost more time than working on future-proofing the engine.

This new, trimmed down 4.x renderer runs on a core profile configuration and uses persistently mapped buffers for nearly everything that is getting transferred to the GPU. (The global uniforms are still being used as such but they'll be phased out after the first beta release.
 2014-08-01 22:42:39 +02:00
Christoph Oelckers
7967082e60 - use the light buffer to handle dynamic lighting. 2014-08-01 20:59:39 +02:00
Christoph Oelckers
1ec58011d2 - start of light buffer implementation so that we don't have to use uniform arrays which appear to be broken on AMD. 2014-07-31 00:44:22 +02:00
Christoph Oelckers
77d9d9b2a5 - fixed: For updating the model VAO's attribute pointers it is necessary to first bind the vertex buffer we need to refer to, because this is not part of the VAO's state. 2014-07-27 11:53:18 +02:00
Christoph Oelckers
bdf5bbd34e - make the shader timer part of the render state. 2014-07-26 20:56:10 +02:00
Christoph Oelckers
fb6b4238ed - fixed: glProgramUniform is only present from GL 4.1 or a specific extension so it may not be used on systems not supporting it. 2014-07-15 02:48:59 +02:00
Christoph Oelckers
6046b11b4f - all shaders now compile in core profile. 2014-07-15 01:05:53 +02:00
Christoph Oelckers
eedc5a69be - replaced builtin position vertex attribute. 2014-07-15 01:02:48 +02:00
Christoph Oelckers
1b7f5a2e6a - replaced builtin texture coordinate vertex attribute. 2014-07-15 00:59:01 +02:00
Christoph Oelckers
5a322742c3 - remove use of builtin and deprecated color vertex attribute. 2014-07-15 00:37:13 +02:00
Christoph Oelckers
ed8a21fd86 - replaced deprecated alpha testing with shader code. 2014-07-14 21:14:43 +02:00