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Add support for contrast-adaptive sharpening in 3D (GLES3 only)

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This is an older, easier to implement variant of CAS as a pure
fragment shader. It doesn't support upscaling, but we won't make
use of it (at least for now).

The sharpening intensity can be adjusted on a per-Viewport basis.
For the root viewport, it can be adjusted in the Project Settings.

Since `textureLodOffset()` isn't available in GLES2, there is no
way to support contrast-adaptive sharpening in GLES2.
This commit is contained in:
Hugo Locurcio 2021-03-27 18:58:12 +01:00
parent 296608460b
commit a9c0c5484f
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GPG key ID: 39E8F8BE30B0A49C
23 changed files with 159 additions and 6 deletions
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1
servers/visual_server.cpp
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@ -1753,6 +1753,7 @@ void VisualServer::_bind_methods() {
ClassDB::bind_method(D_METHOD("viewport_set_msaa", "viewport", "msaa"), &VisualServer::viewport_set_msaa);
ClassDB::bind_method(D_METHOD("viewport_set_use_fxaa", "viewport", "fxaa"), &VisualServer::viewport_set_use_fxaa);
ClassDB::bind_method(D_METHOD("viewport_set_use_debanding", "viewport", "debanding"), &VisualServer::viewport_set_use_debanding);
ClassDB::bind_method(D_METHOD("viewport_set_sharpen_intensity", "viewport", "intensity"), &VisualServer::viewport_set_sharpen_intensity);
ClassDB::bind_method(D_METHOD("viewport_set_hdr", "viewport", "enabled"), &VisualServer::viewport_set_hdr);
ClassDB::bind_method(D_METHOD("viewport_set_usage", "viewport", "usage"), &VisualServer::viewport_set_usage);
ClassDB::bind_method(D_METHOD("viewport_get_render_info", "viewport", "info"), &VisualServer::viewport_get_render_info);