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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
23 changed files with 159 additions and 6 deletions
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17
scene/main/viewport.cpp
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@@ -2988,6 +2988,18 @@ bool Viewport::get_use_debanding() const {
return use_debanding;
}
void Viewport::set_sharpen_intensity(float p_intensity) {
if (p_intensity == sharpen_intensity) {
return;
}
sharpen_intensity = p_intensity;
VS::get_singleton()->viewport_set_sharpen_intensity(viewport, sharpen_intensity);
}
float Viewport::get_sharpen_intensity() const {
return sharpen_intensity;
}
void Viewport::set_hdr(bool p_hdr) {
if (hdr == p_hdr) {
return;
@@ -3120,6 +3132,9 @@ void Viewport::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_use_debanding", "enable"), &Viewport::set_use_debanding);
ClassDB::bind_method(D_METHOD("get_use_debanding"), &Viewport::get_use_debanding);
ClassDB::bind_method(D_METHOD("set_sharpen_intensity", "intensity"), &Viewport::set_sharpen_intensity);
ClassDB::bind_method(D_METHOD("get_sharpen_intensity"), &Viewport::get_sharpen_intensity);
ClassDB::bind_method(D_METHOD("set_hdr", "enable"), &Viewport::set_hdr);
ClassDB::bind_method(D_METHOD("get_hdr"), &Viewport::get_hdr);
@@ -3212,6 +3227,7 @@ void Viewport::_bind_methods() {
ADD_PROPERTY(PropertyInfo(Variant::INT, "msaa", PROPERTY_HINT_ENUM, "Disabled,2x,4x,8x,16x,AndroidVR 2x,AndroidVR 4x"), "set_msaa", "get_msaa");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fxaa"), "set_use_fxaa", "get_use_fxaa");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "debanding"), "set_use_debanding", "get_use_debanding");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "sharpen_intensity"), "set_sharpen_intensity", "get_sharpen_intensity");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "hdr"), "set_hdr", "get_hdr");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "disable_3d"), "set_disable_3d", "is_3d_disabled");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "keep_3d_linear"), "set_keep_3d_linear", "get_keep_3d_linear");
@@ -3371,6 +3387,7 @@ Viewport::Viewport() {
msaa = MSAA_DISABLED;
use_fxaa = false;
use_debanding = false;
sharpen_intensity = 0.0;
hdr = true;
usage = USAGE_3D;