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277 commits

Author SHA1 Message Date
Christoph Oelckers
618c23303f - fixed: The interpolation factor for models was never passed to the shader. 2014-10-23 09:57:27 +02:00
Christoph Oelckers
5302a10a7d - diable software lighting for textured automap. 
* since it is designed for software-style light diminishing it doesn't work for 2D.
* additionally it left the lighting state in an unsuitable setting for further 2D rendering.
 2014-10-23 09:19:30 +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
Christoph Oelckers
9f1f17c306 - fixed: The PolyBSPs weren't fully initialized. Some GZDoom-only fields in the segs were skipped. 2014-10-14 08:54:08 +02:00
Christoph Oelckers
5d032f3fcf - fixed: Since the engine can no longer change renderers on the fly, thanks to ZDoom's messed up video startup code, we have to abort with a fatal error if we can't create a GL context. Otherwise the user will never see a meaningful message. 2014-10-06 10:00:02 +02:00
Christoph Oelckers
3e2a17538b - fixed: HUD weapons were affected by dynamic lights even when the CVARs said that they shouldn't. 2014-10-06 09:05:42 +02:00
Christoph Oelckers
ead8a2874d - fixed: The texture mode implied by render style did not work for models. 2014-10-05 12:03:55 +02:00
Christoph Oelckers
fd3128a164 - fixed: When changing enhanced nightvision mode the shaders need to have their fixed colormap state reset to ensure that the new settings get used. 
- fixed: The shader code for handling special fixed colormaps did not use the color vertex attribute which was most evident with the 'shadow' render style on the spectre.
 2014-10-05 09:40:36 +02:00
Christoph Oelckers
48da2f87bb - fixed: The light buffer index must not be reset between rendering a camera texture and the main scene. 
Since rendering is asynchronous, the camera texture scene may not be finished once the main scene's lights get filled in. Unfortunately forcing a synchronization with glFinisg has bad side effects on performance the only remaining option is to use separate parts of the buffer for both scenes, which in extreme cases may increase the light buffer's size - but on modern hardware that shouldn't be a problem.
 2014-09-21 21:01:11 +02:00
Christoph Oelckers
b2cf7d6512 - fixed memory leak: The sector links for dynamic lights were never freed. 2014-09-21 12:40:08 +02:00
Christoph Oelckers
7359631a43 - fixed weapon drawing rules to account for the death camera. 2014-09-21 11:08:38 +02:00
Christoph Oelckers
4682736585 - fixed: non-tiled mid textures on a fog boundary require some special clamping to be performed in the shader. 2014-09-21 11:08:17 +02:00
Christoph Oelckers
da87a34a6f - fixed: MODELDEF's FrameIndex command was case sensitive. 2014-09-21 09:40:41 +02:00
Christoph Oelckers
43e2d704a3 - always use glPolygonOffset to render translucent geometry. 2014-09-20 09:04:36 +02:00
Christoph Oelckers
92dcf2e5ef - fixed some of those supremely annoying and supremely pointless GCC/Clang compiler warnings. 2014-09-17 11:03:05 +02:00
Christoph Oelckers
c5e00dbc53 fixed: The sampler object for camera textures was never initialized. 2014-09-17 10:52:34 +02:00
Christoph Oelckers
c773a500f2 - only activate shader storage buffers on modern drivers also supporting GL_ARB_buffer storage. Early adopters of this extension (i.e. older AMD drivers mainly) tend to implement this badly. 2014-09-17 09:01:16 +02:00
Christoph Oelckers
a25ed3c807 - fixed: inverted rendering for fuzzy things with light powerup was switched off due to change of render style. 2014-09-15 12:15:19 +02:00
Christoph Oelckers
8e7e16f73a - fixed: The light uniform buffer may not be mapped with GL_MAP_INVALIDATE_BUFFER_BIT, because it needs to be mapped for each portal in a scene but it must preserve the existing data for the remaining translucent objects. 2014-09-15 10:27:09 +02:00
Christoph Oelckers
32f08adaf3 - moved some code to better places. 
- allow GL version 3.0 in Windows, too.
 2014-09-14 23:01:57 +02:00
Ralgor
5cc43137a1 Only require OpenGL 3.0 compatibility profile. 2014-09-14 14:43:42 -05:00
Ralgor
cfc8f3dbbf Global GL render context shouldn't be initialized inside of gl_PrintStartupLog, since it's not compiled in non MSC builds. 2014-09-14 14:42:14 -05:00
Ralgor
1a70a6aabc The light buffer should check for shader_storage_buffer_object rather than buffer_storage. 2014-09-14 14:29:13 -05:00
Ralgor
ddf58b43c9 Fix compile errors on linux. 2014-09-14 14:28:05 -05:00
Christoph Oelckers
3c2f1952fd Merge branch 'master' into v2.x 2014-09-12 21:01:55 +02:00
Christoph Oelckers
25951362fc - fixed: When applying Boom's Transfer_Heights effect to a sector, gl_FakeFlat needs to remove all portals from the original sector planes that are being replaced in the sector copy. 2014-09-11 13:02:39 +02:00
Christoph Oelckers
acf6c259d8 - changed the handling of alpha textures. The only special case they need is with palette-less textures and this can be handled far more easily and robustly with a predefined translation instead of passing another parameter through all the layers of the texture management code. This also fixes problems with paletted PNGs that get used as an alpha texture because the old method clobbered the image's palette. 2014-09-09 13:21:36 +02:00
Christoph Oelckers
4bb320a27c - route texture binding through the renderstate class for better control. Currently it's just a direct passthrough but this will change. 2014-09-09 12:00:42 +02:00
Christoph Oelckers
d5633701b4 - swapped order of textures in burn shader to avoid some problems with the texture samplers. 
- fixed: texture sampler state for the burn texture was never set.
 2014-09-09 10:17:44 +02:00
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
62880f113b - fix a render glitch with Back to Saturn X MAP06: Do not flood missing upper and lower textures with the backsector's flat if that backsector is malformed (i.e. has no area.) 2014-09-09 08:47:39 +02:00
Christoph Oelckers
9b8869e78d Merge branch 'master' into v2.x 
Conflicts:
	src/gl/textures/gl_material.cpp
 2014-09-09 01:30:11 +02:00
Christoph Oelckers
86d9c7ec8e - add some compatibility settings to fix rendering glitches in BTSX_E1 MAP12. 2014-09-09 01:27:41 +02:00
alexey.lysiuk
e29fce6951 Fixed missing transparency on upscaled textures 
Textures with diagonal patterns were treated as opaque after resizing
Images upscaled by hqNx were affected mostly by this issue

http://forum.drdteam.org/viewtopic.php?f=24&t=5370
http://zandronum.com/tracker/view.php?id=269
http://zandronum.com/tracker/view.php?id=315
 2014-09-07 11:52:51 +03:00
Christoph Oelckers
b96dd6c421 - fixed: The missing fourth component of the texture coordinate must be filled with 1.0, not 0.0 before applying the texture matrix. Not doing so will cancel out the translation part of the matrix. 2014-09-02 10:31:48 +02:00
Christoph Oelckers
fa3a62e954 - fix a render glitch with Back to Saturn X MAP06: Do not flood missing upper and lower textures with the backsector's flat if that backsector is malformed (i.e. has no area.) 2014-08-31 23:01:53 +02:00
Christoph Oelckers
a280c20b4e - fixed: If we want to cache texture binding state we have to reset it in all places where a texture becomes unbound. 2014-08-31 19:00:17 +02:00
Christoph Oelckers
12160bd29c - remove some obsolete code from decal rendering. 
- avoid rebinding the same texture multiple times, as there's considerable overhead in the texture manager.
- check gl_sort_textures only once per scene, not per draw list.
 2014-08-30 15:34:14 +02:00
Christoph Oelckers
6a3cd6378a - found out that reading the CPU's real time clock costs a not insignificant amount of time so this is now only done when either the benchmark command is running or the rendertimes are shown. 2014-08-30 14:33:06 +02:00
Christoph Oelckers
49ec7beb8f - separate draw lists for walls and flats. This makes the sorting much more efficient because draw types no longer need to be checked in the compare function. This is a lot more important than having perfect texture order. 2014-08-30 13:04:41 +02:00
Christoph Oelckers
a903cbe12e - sorting draw items by light level no longer makes sense so remove all corresponding code from dicmp. 2014-08-24 13:10:45 +02:00
Christoph Oelckers
bf03d02228 - print OpenGL profile type in startup log. 2014-08-24 01:09:44 +02:00
Christoph Oelckers
904cc2e158 - some code cleanup. 2014-08-23 18:54:24 +02:00
Christoph Oelckers
bf6079af46 - fixed incorrect check for overrideshader. 2014-08-23 00:47:05 +02:00
Christoph Oelckers
1050013017 major cleanup of the texture manager: 
- use sampler objects to avoid creating up to 4 different system textures for one game texture just because of different clamping settings.
- avoids flushing all textures for change of texture filter mode.
- separate sprite and regular dimensions on the material level to have better control over which one gets used. It's now an explicit parameter of ValidateTexture. The main reason for this change is better handling of wall sprites which may not be subjected to such handling.
- create mipmaps based on use case, not texture type.
- allows removal of FCloneTexture hack for proper sharing of the same sprite for decals and other purposes.
- better precaching of skyboxes.
 2014-08-22 23:50:38 +02:00
Christoph Oelckers
274a4216ea - disabling inlining in the GL loader produces an executable that's 8kb smaller. 2014-08-21 11:47:53 +02:00
Christoph Oelckers
e132fc5eed - replaced GLEW with GLLoadGen for GL access. This allows to have a header that only contains what's actually required, namely OpenGL 3.3 plus glBegin and glEnd which are the only compatibility functions needed for the fallback render path. 
GLEW has two major problems:

- it always includes everything, there is no way to restrict the header to a specific GL version
- it is mostly broken with a core profile and only works if all sanity checks get switched off.
 2014-08-21 11:02:46 +02:00
Christoph Oelckers
6f65bccf1c - reinstated the far superior assembly HQnX version for Visual C++. 2014-08-20 12:45:33 +02:00
Christoph Oelckers
86d37e06f9 - lowered requirements of GL 2.x to OpenGL 3.3. 
There was one issue preventing the previous 2.0 betas from running under GL 3.x: The lack of persistently mapped buffers.
For the dynamic light buffer today's changes take care of that problem.
For the vertex buffer there is no good workaround but we can use immediate mode render calls instead which have been reinstated.

To handle the current setup, the engine first tries to get a core profile context and checks for presence of GL 4.4 or the GL_ARB_buffer_storage extension.
If this fails the context is deleted again and a compatibility context retrieved which is then used for 'old style' rendering which does work on older GL versions.

This new version does not support GL 3.2 or lower, meaning that Intel GMA 3000 or lower is not supported. The reason for this is that the engine uses a few GL 3.3 features which are not present in the latest Intel driver.
In general the Intel GMA 3000 is far too weak, though, to run the demanding shader of GZDoom 2.x, so this is no real loss. Performance would be far from satisfying.

A command line option '-gl3' exists to force the fallback render path. On my Geforce 550Ti there's approx. 10% performance loss on this path.
 2014-08-19 15:56:33 +02:00
Christoph Oelckers
a2dc4afe3f - screwed by the editor's autocompletion... (wrong GL flag was used...) 2014-08-19 14:25:47 +02:00
Christoph Oelckers
00d7707aef - allow reallocation of light buffer if more lights are needed. 
- added a light preprocessing pass to the renderer so that a non-persistent buffer can be used with minimal mapping/unmapping. This only gets used if necessary because it adds some overhead to the renderer.
 2014-08-19 14:18:21 +02:00
Christoph Oelckers
38796e7714 - removed some obsolete and useless GL calls. 2014-08-17 11:41:03 +02:00
Christoph Oelckers
b9ffb51d0c - small but important optimization: Two-sided lines with both sides in the same sector don't really require vertex splitting for precise rendering. 2014-08-04 23:00:40 +02:00
Christoph Oelckers
09a68e8c93 - fixed incorrect function call in shader compiler. 2014-08-03 18:14:19 +02:00
Christoph Oelckers
19cfffebb3 - fixed: the WallTypes enum contained a value that no longer was valid. This was fixed orignally last week but it seems to have gotten lost. 2014-08-03 12:21:05 +02:00
Christoph Oelckers
c98e3ca99d Merge branch 'master' into v2.x 2014-08-03 10:58:41 +02:00
Christoph Oelckers
b3e0d93385 - implemented rendering of wall sprites. 2014-08-03 10:57:58 +02:00
Christoph Oelckers
398d902e7e - split off sprite clipping adjustment code into its own function. 2014-08-03 10:22:12 +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
a97b58fa27 - added check for light uniform buffer overflows, because uniform buffers on Intel are rather small. 2014-08-02 20:41:13 +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
ef8f66c9a1 - removed the code for hardware alpha testing again because it didn't work anymore with how things are set up now. 
- we need to check all GL versions when trying to get a context because some drivers only give us the version we request, leaving out newer features that are not exposed via extension.
- added some status info about uniform blocks.
 2014-07-30 23:13:16 +02:00
Christoph Oelckers
beabfad293 Merge branch 'master' into Glew_Version_For_Real 2014-07-28 22:23:56 +02:00
Christoph Oelckers
318aebc4ad - fixed: the vertex collection code used incorrect indices for checking the checkmap array. 2014-07-28 22:23:17 +02:00
Christoph Oelckers
192daf1d5a Merge branch 'master' into Glew_Version_For_Real 2014-07-27 21:57:38 +02:00
Christoph Oelckers
ece10bb57f - fixed several incorrect uses of abs instead of fabs. 2014-07-27 21:57:05 +02:00
Christoph Oelckers
c9c93a58a2 - fixed bad constant and potential use of uninitialized variable. 2014-07-27 21:55:25 +02:00
Christoph Oelckers
3d24f58bf0 - fixed conditions for disabling the flat vertex buffer. 2014-07-27 20:18:32 +02:00
Christoph Oelckers
29a56fe01c Merge branch 'master' into Glew_Version_For_Real 2014-07-27 17:59:50 +02:00
Christoph Oelckers
925305aa05 - fixed: The code for updating vertex dirty state had been completely missing. I have no idea when it disappeared... 2014-07-27 17:58:51 +02:00
Christoph Oelckers
4904abfc1c - forgot test stuff. 2014-07-27 13:47:37 +02:00
Christoph Oelckers
97341fcb31 - reenabled the flat vertex buffer for GL 3.x NVidia hardware. On AMD and Intel it'll stay off because past tests have shown that it won't improve performance at all. 2014-07-27 13:46:35 +02:00
Christoph Oelckers
c1d8f235c2 - renamed some stuff that clashed with gl function names. 2014-07-27 12:33:54 +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
e07d06fa2a Merge branch 'master' into Glew_Version_For_Real 2014-07-26 22:26:58 +02:00
Christoph Oelckers
7ae25906fd - fixed: fog must be disabled before drawing the HUD model, not after it. 2014-07-26 22:26:17 +02:00
Christoph Oelckers
bdf5bbd34e - make the shader timer part of the render state. 2014-07-26 20:56:10 +02:00
Christoph Oelckers
637aa9d77e - some adjustments to allow testing the different rendering methods. 2014-07-26 18:43:54 +02:00
Christoph Oelckers
6c9a818220 - allow different render modes if persistent buffers are not available (untested!) 2014-07-26 10:23:07 +02:00
Christoph Oelckers
e0b756e511 - fixed: The cubemapped skybox renderer did not set up the model matrix properly. 2014-07-17 10:04:20 +02:00
Christoph Oelckers
eb9d2d9917 - reactivate compatibility profile so that immediate mode drawing can be used on older hardware not supporting persistently mapped buffers. 
- reactivate alpha testing per fixed function pipeline
- use the 'modern' way to define clip planes (GL_CLIP_DISTANCE). This is far more portable than the old glClipPlane method and a lot more robust than checking this in the fragment shader.
 2014-07-17 02:37:18 +02:00
Christoph Oelckers
6b9d6787d9 - move models into their own draw list to avoid frequent buffer changes. 
- same for SKYHACK walls. Although rare, they would get in the way of optimizing the draw calls if not being separated out.
 2014-07-15 21:16:59 +02:00
Christoph Oelckers
b8bcbe819b - removed texture based dynamic lighting. For GL 3.x the shader approach is always better. 
- fixed: sky fog was not unset.
 2014-07-15 20:49:21 +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
fc0cf4f998 - GZDoom now runs on an OpenGL core profile. :) 
It's probably still necessary to replace GLEW with another loader library. GLEW is pretty much broken on core OpenGL without some hacky workarounds...
 2014-07-15 02:26:23 +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
Christoph Oelckers
84a49e37ee - handle normals for spheremapped mirror surfaces using non-deprecated features. 
- move all WGL references out of global header files so that global wgl header include is no longer necessary
 2014-07-14 19:54:07 +02:00
Christoph Oelckers
ed5ee4e8d1 - removed some obsolete init stuff and some deprecated constants. 2014-07-14 18:48:46 +02:00
Christoph Oelckers
1f2f7616e1 - remove timing of matrix application method 2014-07-14 00:31:10 +02:00
Christoph Oelckers
150135a07d - reinstate drawcall timing. 2014-07-13 23:14:28 +02:00
Christoph Oelckers
ce3653f6e1 - remove all uses of builtin matrices. 2014-07-13 23:13:40 +02:00
Christoph Oelckers
2214c0ac06 - remove all uses of builtin matrix manipulation. Only glLoadMatrix for view and projection matrix are left. 2014-07-13 22:37:34 +02:00