Post-processing shaders

Reshade has different shaders than DolphinFX/IshiirukaFX and GlideN64 still needs Z-buffer access to fully use Reshade.

https://github.com/Tinob/Ishiiruka/blob/master/Data/Sys/Shaders/Postprocessing/DolphinFX.glsl https://github.com/Tinob/Ishiiruka/blob/master/Data/Sys/Shaders/Postprocessing/IshiirukaFX.glsl https://github.com/PCSX2/pcsx2/blob/master/bin/shaders/GSdx.fx https://github.com/Tinob/Ishiiruka/tree/master/Data/Sys/Shaders/Scaling

Shader GUI https://github.com/dolphin-emu/dolphin/commit/287758f15d07cb6e0c19d861d8134124361d2d30 https://github.com/dolphin-emu/dolphin/commit/33bdc0f985d4c46c88d19677330554d1edc09b86 https://github.com/dolphin-emu/dolphin/commit/f2a1dd91fe7b94580534b4299803ef9e6cb60d04

Multi pass https://github.com/Tinob/Ishiiruka/commit/ffa8a862e4b85ab1372b05e6253972cdd92385d4 https://github.com/Tinob/Ishiiruka/commit/6c1603447a630fe5f724d4812008490e627d7c92 https://github.com/Tinob/Ishiiruka/commit/1583f8a2abf593a64abca7566531a1a89ce02879 https://github.com/Tinob/Ishiiruka/commit/c6027f42776f9d7416a75c4906cbd254d49d66c5

Per-pixel lighting

Shader2

Texture replacement

Programmable shader blending with texture barrier.

SIF:

https://github.com/3kinox/pcsx2/commit/0e9b9631eec6eb3b7f8ba5e77c85b3af7a3e5004 https://github.com/PCSX2/pcsx2/commit/bffeda5ef9d9f6975cb0127d38f1ded64f17d48b https://github.com/PCSX2/pcsx2/commit/2b1a9277ee21e9ac20deb61ce613bc35846497c6 https://github.com/PCSX2/pcsx2/commit/0548bfb85b191d050fd8811175c173f7765baf45 https://github.com/PCSX2/pcsx2/commit/1b42c82faf26f2e83169e95a8873257cdc7933a6 https://github.com/PCSX2/pcsx2/commit/6167067791d8d7189b4511c86be5984395d2e326

https://github.com/PCSX2/pcsx2/commit/4914620178eca6a1cf0c6135ab852a19df389c28 https://github.com/PCSX2/pcsx2/commit/0946958acf7eda17b0611c7e9ba8a1d18319b940 https://github.com/PCSX2/pcsx2/commit/b5171dfe5db8a0f569e90d46e0a10dd9a2425ae1 https://github.com/PCSX2/pcsx2/commit/ad71ca4cc876fb9f5fa82ac6ca52a452d9851e55 https://github.com/PCSX2/pcsx2/commit/ee9b1caaa4536c1b6e1538c9fc6187722d358194

https://www.opengl.org/registry/specs/ARB/texture_barrier.txt https://www.opengl.org/registry/specs/NV/texture_barrier.txt https://www.khronos.org/registry/gles/extensions/EXT/EXT_shader_framebuffer_fetch.txt https://www.khronos.org/registry/gles/extensions/ARM/ARM_shader_framebuffer_fetch.txt https://www.khronos.org/registry/gles/extensions/ARM/ARM_shader_framebuffer_fetch_depth_stencil.txt https://www.opengl.org/registry/specs/ARB/sparse_texture.txt https://developer.nvidia.com/sites/default/files/akamai/opengl/specs/GL_EXT_sparse_texture2.txt https://www.opengl.org/registry/specs/ARB/bindless_texture.txt https://www.opengl.org/registry/specs/ARB/texture_buffer_object.txt https://www.khronos.org/registry/gles/extensions/OES/OES_texture_buffer.txt https://www.opengl.org/registry/specs/ARB/texture_buffer_object_rgb32.txt Clip Control https://github.com/dolphin-emu/dolphin/pull/2419/files

Texture Barrier https://github.com/Yabause/yabause/commit/46bd80bd8f076f4e60cf86d18e8a5f259e962f07 https://github.com/Yabause/yabause/pull/22/files https://github.com/Yabause/yabause/commit/b307da5386fd73950f1acb5c5824fb8c89e49e00 https://github.com/Yabause/yabause/commit/c6ffab78439de82e80cf1298b0747440c8f2a364 https://github.com/Yabause/yabause/commit/f04d3c5fcdf038e70848e0bac6140911d977fab4

Post-Processing features: 1: A way to load/sample from an external image (some great shading effects use this like Storybook shaders). 2:A way to store model view projection information between frames (camera based motion blur). And beyond that, store information for temporal AA and shader based SSAA.

3:Support for LUTs in post-processing shaders.

4:Support for '''adding two bytecode precomputed textures, or b: implementation of annotations for external texture path handling'' which is required for SMAA. https://github.com/iryoku/smaa https://github.com/scrawl/smaa-opengl https://github.com/Chman/SMAA-Unity

5: Custom Vertex shaders/Quads(this is really needed because many custom shaders are designed with vertex mnipulation in mind) External compilation of vertex shaders. Maybe a conditional statement to check if there is an external vs present, and if so, compile it. If there's no external vs, compile the internal one. 6: Ability to retrieve data from projection matrices for things like HBAO. https://gist.github.com/fisch0920/6770346 https://gist.github.com/search?utf8=%E2%9C%93&q=hbao https://github.com/nvpro-samples/gl_ssao https://github.com/scanberg/hbao https://github.com/aiwl/hbao 7: Ability to apply shaders directly to textures and not just a whole screen. I don't know if it's doable on GPUs but it'd allow for using shaders for texture scaling like xBRZ on CPU can do, of course for scaling shaders vertex shader support would come in handy first.

8:A few more uniforms for eg: depth, lighting, and samplers.(probably already done)

9; I don't know if Dolphin already has it or not but support for Stencil Buffer/Stencil testing/Stencil pass would be useful for post-processing shaders.

10:Not sure if this doable in Dolphin but some advanced post-processing AA shaders needs additional buffers like aggregate geometry buffer.

http://www.humus.name/index.php?page=3D http://graphics.cs.williams.edu/papers/AggregateI3D15/ http://on-demand.gputechconf.com/gtc/2015/presentation/S5442-Chris-Wyman.pdf http://graphics.cs.williams.edu/papers/AggregateI3D15/Crassin2015 https://research.nvidia.com/sites/default/files/publications/acaa_abstract.pdf https://github.com/vispy/experimental/tree/master/fsaa https://github.com/vispy/vispy/wiki/Tech.-Antialiasing