163 commits

Author	SHA1	Message	Date
Magnus Norddahl	14c1a77f8a	Fix AmbientOcclusionColor bug where pixelpos was assumed to be in eye space coordinates	2016-10-13 18:08:04 +02:00
Magnus Norddahl	f5c069c759	Merge remote-tracking branch 'origin/gl_swframebuffer' into qzdoom	2016-10-11 14:54:18 +02:00
Magnus Norddahl	3c7d6234cb	Add wipes	2016-10-11 14:37:57 +02:00
Magnus Norddahl	01dc9de8d1	Misc bug fixes and performance improvements	2016-10-11 10:27:18 +02:00
Magnus Norddahl	682b040b97	OpenGL based software renderer hardware accel now works for most things	2016-10-11 00:03:46 +02:00
Magnus Norddahl	f4308b3184	Add glsl shader version of the d3d9 shaders and get enough of it working for it to boot without errors	2016-10-10 21:03:55 +02:00
raa-eruanna	2a7b902a0a	Merge http://github.com/coelckers/gzdoom ... # Conflicts: # src/gl/renderer/gl_renderer.cpp	2016-10-10 10:39:07 -04:00
Christopher Bruns	779e6acb7b	Create "final" two non-VR 3D modes: Column-interleaved and checkerboard.	2016-10-09 13:05:50 -04:00
Magnus Norddahl	1b7c42f45f	Multisampling ssao bug fixes and split linear depth to its own buffer	2016-10-09 06:17:48 +02:00
Magnus Norddahl	bb79dcb634	SSAO math bug fixes	2016-10-06 07:36:49 +02:00
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
alexey.lysiuk	c68aa2b241	Added FXAA post-processing ... Implementation of Fast Approximate Anti-Aliasing is based on nVidia sample: https://github.com/NVIDIAGameWorks/GraphicsSamples/tree/master/samples/es3-kepler/FXAA	2016-10-03 00:15:45 +02:00
Christopher Bruns	0240cdef18	Modulate row interleaved stereo 3d offset with window height parity, because gl_FragCoord.y approaches zero at the bottom, not the top of the window.	2016-10-02 16:10:58 -04:00
Christopher Bruns	fcbf9342d6	Compute row location using gl_FragCoord.	2016-10-02 16:10:39 -04:00
Christopher Bruns	460b653709	Row interlaced 3d might be working, at least in fullscreen 1920x1080 mode.	2016-10-02 16:10:21 -04:00
Magnus Norddahl	d774136282	Added SceneData texture as the second colorbuffer when rendering a scene and placed fog data into it	2016-09-25 00:22:32 +02:00
Magnus Norddahl	9af34bac69	Add gbuffer pass support to FShaderManager and FRenderState	2016-09-25 00:22:32 +02:00
Magnus Norddahl	0a8cc1b74c	Fix depth blur	2016-09-25 00:22:31 +02:00
Magnus Norddahl	24ab13f1ce	Fix stripes in the reconstructed normals due to down scaling	2016-09-25 00:22:31 +02:00
Magnus Norddahl	e025f6e54b	Mark portals in scene alpha channel for the SSAO pass	2016-09-25 00:22:31 +02:00
Magnus Norddahl	c7c0ffadb5	Move SSAO pass to be before translucent rendering ... Fix depth sampling location when not using fullscreen scene	2016-09-25 00:19:16 +02:00
Magnus Norddahl	09bec67821	Resolve multisampling depth in shader	2016-09-25 00:19:16 +02:00
Magnus Norddahl	a246b58673	Change SSAO blur to be depth aware	2016-09-25 00:19:16 +02:00
Magnus Norddahl	723eb746f6	Add ssao random texture	2016-09-25 00:19:15 +02:00
Magnus Norddahl	9076d46261	Added SSAO pass	2016-09-25 00:19:15 +02:00
raa-eruanna	2339b18b01	Quick fix: prevents negative values being passed to pow.	2016-09-22 09:23:26 +02:00
raa-eruanna	72491049e0	Changes to the contrast/brightness/gamma formula for both hardware and shader gamma correction. Mainly makes a correction with the shader version where contrast/brightness being negative values would clip them inappropriately.	2016-09-22 09:23:25 +02:00
Magnus Norddahl	f7b6b1433c	Added exposure pass calculating the bloom/tonemap exposure based on what the eye is seeing	2016-09-22 09:13:32 +02:00
Magnus Norddahl	f2a3b8978d	Added declaration in the shader that was missing	2016-09-17 00:30:03 +02:00
Gaerzi	d99d43aeba	Fixes to fuzz shaders	2016-09-17 00:30:03 +02:00
Magnus Norddahl	dc39a006dc	Fix palette tonemap precision and compile error on Intel	2016-09-04 02:37:59 +02:00
Christoph Oelckers	589936f570	- draw the colormap blend after postprocessing, not before it. ... - added colormap shader to postprocessing. This replaces the in-place application of fullscreen colormaps if renderbuffers are active. This way the fully composed scene gets inverted, not each element on its own which is highly problematic for additively blended things.	2016-09-01 17:14:51 +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
alexey.lysiuk	2f893af857	Fixed palette tonemap mode for OpenGL 2.x	2016-08-24 11:44:33 +03:00
Magnus Norddahl	25645d901e	Add Palette LUT tonemap mode	2016-08-23 09:18:18 +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	0e2d9affb2	Make sure tonemap shader never takes the sqrt of a negative number ... Fix bug where the old hardcoded exposure bias was still being used in the uncharted2 tonemap	2016-08-16 00:22:00 +02:00
Magnus Norddahl	a8d1197ea7	Make sure we never pass a negative value to pow, and optimize gamma uniform	2016-08-16 00:01:18 +02:00
Magnus Norddahl	210fce1193	Fix bloom shader missing its target	2016-08-14 09:05:50 +02:00
Christoph Oelckers	675822004d	- use static buffer data and a uniform to handle the texture positioning of the present shader. ... That's again one less write access to the buffer. The uniform method was chosen because this way a buffer update can be completely avoided, and setting a single uniform is a lot cheaper and simpler to handle.	2016-08-08 16:06:02 +02:00
Magnus Norddahl	346badf25f	Moved state to FGLPostProcessState and merged vertex shaders	2016-08-06 11:51:08 +02:00
Magnus Norddahl	6fc7596d52	Fix aspect ratio and texture clipping in lens shader	2016-08-04 15:47:15 +02:00
Magnus Norddahl	6b9529d70f	Added lens distortion shader	2016-08-02 17:32:21 +02:00
Magnus Norddahl	7709db4bb0	Fix broken viewport/backbuffer location for WriteSavePic	2016-07-31 16:23:21 +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
Magnus Norddahl	0efee85bd8	Added tonemapping and sector based exposure control	2016-07-29 00:36:43 +02:00
Magnus Norddahl	69f52cc898	Added bloom shaders	2016-07-27 21:50:30 +02:00
Magnus Norddahl	aeb7df09de	Added hardware gamma option and improved window handling on Windows	2016-07-27 11:15:19 +02:00
Magnus Norddahl	669238db66	Fix Apple GLSL compile errors	2016-07-23 17:27:19 +02:00
Magnus Norddahl	c08fc8f5a8	Fix depth calculations for R_DoomLightingEquation and make it an exact match of what zdoom does	2016-07-23 17:27:19 +02:00
Christoph Oelckers	3334b28a02	- don't let the light go completely black with software-emulated lighting.	2016-05-04 14:30:10 +02:00
Christoph Oelckers	9f91fa8f43	- make the warp2 shader's formula match the software renderer's. ... This fixes some jerkiness with vertical scrollers due to a bad sine period and makes the overall appearance of the effect what it was originally supposed to be. The old warp2 shader was not created by replicating the formula but by trial and error until it looked close enough. A version of the old warp2 shader with a fixed sine period is still available as a custom hardware shader.	2016-05-04 13:47:40 +02:00
alexey.lysiuk	f9022f3054	Fixed compilation of gamma correction shader with particular OpenGL setup	2016-05-02 16:13:54 +03:00
alexey.lysiuk	333560086d	Calculate color values for gamma correction directly in shader ... Gamma table texture is no longer needed	2016-05-02 11:24:42 +03:00
alexey.lysiuk	44b019413c	Implemented gamma correction in OS X native backend using shader effect	2016-05-02 10:04:09 +03:00
Christoph Oelckers	70bf649364	- added clip planes for line portals and mirrors. This should eliminate the remaining problems with some visible geometry in front of the portal, it is also necessary to handle sprite splitting across line portals properly.	2016-04-29 12:26:57 +02:00
Christoph Oelckers	21283b18f4	- preparations for using clip planes on line portals.	2016-04-29 01:48:06 +02:00
Christoph Oelckers	86f38475b0	- shaders for last commit.	2016-04-27 02:10:42 +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	fc38728309	- made some changes to the shaders to allow downpatching them to GLSL 1.2: ... * disable the dynamic light code if no buffers are available * added a duplicate of the getTexel function which cannot be patched without creating syntax problems. * fixe int<->float conversion warning, which on some compilers may be an error.	2016-04-26 11:31:27 +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	238990c871	don't leave any gaps in the used clip planes.	2016-01-27 12:32:39 +01:00
Christoph Oelckers	47db3252f4	- it's really not necessary to waste two clip planes for reflective surfaces because only one can be active at any time.	2016-01-27 12:30:55 +01:00
Christoph Oelckers	b45c88fc4f	- changed shaders.	2015-04-05 20:20:56 +02:00
Christoph Oelckers	020b02e073	- changed deprecated texture sampler access function names.	2014-11-28 12:28:45 +01:00
Christoph Oelckers	5638aab63c	- fixed: Even though the name REDISALPHA implies otherwise, this render mode still needs to respect a texture's alpha channel to ensure that things get rendered properly. Otherwise the SmoothEdges function cannot be used which is necessary to ensure that filtered textures look correct.	2014-10-26 21:17:29 +01:00
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	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	835dbe5bd0	- removed the 'layout' qualifier from the uniform buffer declaration. It's not really needed because the layout of a single vec4 array cannot possibly change, and Intel drivers are complaining for unknown reasons.	2014-09-20 09:10:01 +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	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	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	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	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	754c96a540	- added default precision settings to shader include because some old ATI drivers complain if they aren't there - even though the spec doesn't require them...	2014-07-27 16:09:47 +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	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	5193f6cfef	- remove use of builtin deprecated varyings in shaders.	2014-07-15 00:19:41 +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	ce3653f6e1	- remove all uses of builtin matrices.	2014-07-13 23:13:40 +02:00
Christoph Oelckers	dbb05c5f33	- remove use of builtin texture matrices. ... - make matrix class single precision.	2014-07-13 20:41:20 +02:00
Christoph Oelckers	00fcf4bc06	- for some reason using world coordinates for clipping in the shader is somewhat imprecise so the clip plane heights have to be adjusted a bit for it.	2014-07-13 13:25:42 +02:00
Christoph Oelckers	60dc2e1122	- some shader fixes.	2014-07-13 13:01:35 +02:00
Christoph Oelckers	d868f60f6c	- since the clip planes for plane mirrors did not work anymore I reimplemented them using shader based logic. It still needs to be seen if this affects performance on older hardware.	2014-07-13 12:14:12 +02:00
Christoph Oelckers	a936629cec	- use default fragment shader for burn and stencil shader, with the time consuming parts disabled by a #define, to avoid code duplication.	2014-07-10 10:33:07 +02:00
Christoph Oelckers	f710518903	- use a uniform array to store vertex data to render dynamic stuff on GL 3.x hardware without the ARB_buffer_storage extension. ... Due to the way the engine works it needs to render a lot of small primitives with frequent state changes. But due to the performance of buffer uploads it is impossible to upload each primitive's vertices to a buffer separately because buffer uploads nearly always stall the GPU. On the other hand, in order to reduce the amount of buffer uploads all the necessary state changes would have to be saved in an array until they can finally be used. This method also imposed an unacceptable overhead. Fortunately, uploading uniform arrays is very fast and doesn't cause GPU stalls, so now the engine puts the vertex data per primitive into a uniform array and uses a static vertex buffer to index the array in the vertex shader. This method offers the same performance as immediate mode but only uses core profile features.	2014-06-30 18:10:55 +02:00
Christoph Oelckers	1efc2938b7	- implement model vertex buffer and draw MD2 models using it instead of using the GLCommands from the model.	2014-06-29 23:24:16 +02:00
Christoph Oelckers	9d1dbf4eab	- fixed: FBufferedUniform1f didn'T work because it used an int as its buffered value.	2014-06-29 14:08:44 +02:00
Christoph Oelckers	ffcb6cb70a	- added second vertex coordinate attribute for model interpolation.	2014-06-29 11:00:21 +02:00
Christoph Oelckers	39775cc904	- mystery of desaturation shader solved: The old code passed '1-desaturation' to the shader, the new code 'desaturation', so for the 'mix' function to work its arguments must be swapped.	2014-05-21 15:25:25 +02:00