diff --git a/doc/classes/Environment.xml b/doc/classes/Environment.xml
index ffe1cb42888f..c985660fe413 100644
--- a/doc/classes/Environment.xml
+++ b/doc/classes/Environment.xml
@@ -337,7 +337,10 @@
Filmic tonemapper operator.
- Academy Color Encoding System tonemapper operator.
+ Academy Color Encoding System tonemapper operator. Performs an aproximation of the ACES tonemapping curve.
+
+
+ High quality Academy Color Encoding System tonemapper operator that matches the industry standard. Performs a more physically accurate curve fit which better simulates how light works in the real world. The color of lights and emissive materials will become lighter as the emissive energy increases, and will eventually become white if the light is bright enough to saturate the camera sensor.
Low depth-of-field blur quality (fastest).
diff --git a/doc/classes/VisualServer.xml b/doc/classes/VisualServer.xml
index 1585aa559884..87b1f8fd9f00 100644
--- a/doc/classes/VisualServer.xml
+++ b/doc/classes/VisualServer.xml
@@ -3798,6 +3798,9 @@
Use the ACES tonemapper.
+
+ Use the ACES Fitted tonemapper.
+
Lowest quality of screen space ambient occlusion.
diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp
index 263f2333577a..4a2509c981c8 100644
--- a/drivers/gles3/rasterizer_scene_gles3.cpp
+++ b/drivers/gles3/rasterizer_scene_gles3.cpp
@@ -3863,6 +3863,7 @@ void RasterizerSceneGLES3::_post_process(Environment *env, const CameraMatrix &p
if (env) {
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_FILMIC_TONEMAPPER, env->tone_mapper == VS::ENV_TONE_MAPPER_FILMIC);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_ACES_TONEMAPPER, env->tone_mapper == VS::ENV_TONE_MAPPER_ACES);
+ state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_ACES_FITTED_TONEMAPPER, env->tone_mapper == VS::ENV_TONE_MAPPER_ACES_FITTED);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_REINHARD_TONEMAPPER, env->tone_mapper == VS::ENV_TONE_MAPPER_REINHARD);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_AUTO_EXPOSURE, env->auto_exposure);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_GLOW_FILTER_BICUBIC, env->glow_bicubic_upscale);
@@ -3964,6 +3965,7 @@ void RasterizerSceneGLES3::_post_process(Environment *env, const CameraMatrix &p
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_AUTO_EXPOSURE, false);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_FILMIC_TONEMAPPER, false);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_ACES_TONEMAPPER, false);
+ state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_ACES_FITTED_TONEMAPPER, false);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_REINHARD_TONEMAPPER, false);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_GLOW_LEVEL1, false);
state.tonemap_shader.set_conditional(TonemapShaderGLES3::USE_GLOW_LEVEL2, false);
diff --git a/drivers/gles3/shaders/tonemap.glsl b/drivers/gles3/shaders/tonemap.glsl
index 6804aa613c2c..71c5e21a7030 100644
--- a/drivers/gles3/shaders/tonemap.glsl
+++ b/drivers/gles3/shaders/tonemap.glsl
@@ -163,6 +163,37 @@ vec3 tonemap_aces(vec3 color, float white) {
return clamp(color_tonemapped / white_tonemapped, vec3(0.0f), vec3(1.0f));
}
+// Adapted from https://github.com/TheRealMJP/BakingLab/blob/master/BakingLab/ACES.hlsl
+// (MIT License).
+vec3 tonemap_aces_fitted(vec3 color, float white) {
+ const float exposure_bias = 1.8f;
+ const float A = 0.0245786f;
+ const float B = 0.000090537f;
+ const float C = 0.983729f;
+ const float D = 0.432951f;
+ const float E = 0.238081f;
+
+ // Exposure bias baked into transform to save shader instructions. Equivalent to `color *= exposure_bias`
+ const mat3 rgb_to_rrt = mat3(
+ vec3(0.59719f * exposure_bias, 0.35458f * exposure_bias, 0.04823f * exposure_bias),
+ vec3(0.07600f * exposure_bias, 0.90834f * exposure_bias, 0.01566f * exposure_bias),
+ vec3(0.02840f * exposure_bias, 0.13383f * exposure_bias, 0.83777f * exposure_bias));
+
+ const mat3 odt_to_rgb = mat3(
+ vec3(1.60475f, -0.53108f, -0.07367f),
+ vec3(-0.10208f, 1.10813f, -0.00605f),
+ vec3(-0.00327f, -0.07276f, 1.07602f));
+
+ color *= rgb_to_rrt;
+ vec3 color_tonemapped = (color * (color + A) - B) / (color * (C * color + D) + E);
+ color_tonemapped *= odt_to_rgb;
+
+ white *= exposure_bias;
+ float white_tonemapped = (white * (white + A) - B) / (white * (C * white + D) + E);
+
+ return clamp(color_tonemapped / white_tonemapped, vec3(0.0f), vec3(1.0f));
+}
+
vec3 tonemap_reinhard(vec3 color, float white) {
return clamp((white * color + color) / (color * white + white), vec3(0.0f), vec3(1.0f));
}
@@ -174,6 +205,12 @@ vec3 linear_to_srgb(vec3 color) { // convert linear rgb to srgb, assumes clamped
// inputs are LINEAR, If Linear tonemapping is selected no transform is performed else outputs are clamped [0, 1] color
vec3 apply_tonemapping(vec3 color, float white) {
+ // Ensure color values are positive.
+ // They can be negative in the case of negative lights, which leads to undesired behavior.
+#if defined(USE_REINHARD_TONEMAPPER) || defined(USE_FILMIC_TONEMAPPER) || defined(USE_ACES_TONEMAPPER) || defined(USE_ACES_FITTED_TONEMAPPER)
+ color = max(vec3(0.0f), color);
+#endif
+
#ifdef USE_REINHARD_TONEMAPPER
return tonemap_reinhard(color, white);
#endif
@@ -186,6 +223,10 @@ vec3 apply_tonemapping(vec3 color, float white) {
return tonemap_aces(color, white);
#endif
+#ifdef USE_ACES_FITTED_TONEMAPPER
+ return tonemap_aces_fitted(color, white);
+#endif
+
return color; // no other selected -> linear: no color transform applied
}
@@ -401,9 +442,7 @@ void main() {
#endif
// Early Tonemap & SRGB Conversion; note that Linear tonemapping does not clamp to [0, 1]; some operations below expect a [0, 1] range and will clamp
- // Ensure color values are positive.
- // They can be negative in the case of negative lights, which leads to undesired behavior.
- color = apply_tonemapping(max(vec3(0.0), color), white);
+ color = apply_tonemapping(color, white);
#ifdef KEEP_3D_LINEAR
// leave color as is (-> don't convert to SRGB)
diff --git a/scene/resources/environment.cpp b/scene/resources/environment.cpp
index 8af3df781fb4..3d6e806dc493 100644
--- a/scene/resources/environment.cpp
+++ b/scene/resources/environment.cpp
@@ -919,7 +919,7 @@ void Environment::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_tonemap_auto_exposure_grey"), &Environment::get_tonemap_auto_exposure_grey);
ADD_GROUP("Tonemap", "tonemap_");
- ADD_PROPERTY(PropertyInfo(Variant::INT, "tonemap_mode", PROPERTY_HINT_ENUM, "Linear,Reinhard,Filmic,ACES"), "set_tonemapper", "get_tonemapper");
+ ADD_PROPERTY(PropertyInfo(Variant::INT, "tonemap_mode", PROPERTY_HINT_ENUM, "Linear,Reinhard,Filmic,ACES,ACES Fitted"), "set_tonemapper", "get_tonemapper");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "tonemap_exposure", PROPERTY_HINT_RANGE, "0,16,0.01"), "set_tonemap_exposure", "get_tonemap_exposure");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "tonemap_white", PROPERTY_HINT_RANGE, "0,16,0.01"), "set_tonemap_white", "get_tonemap_white");
ADD_GROUP("Auto Exposure", "auto_exposure_");
@@ -1138,6 +1138,7 @@ void Environment::_bind_methods() {
BIND_ENUM_CONSTANT(TONE_MAPPER_REINHARDT);
BIND_ENUM_CONSTANT(TONE_MAPPER_FILMIC);
BIND_ENUM_CONSTANT(TONE_MAPPER_ACES);
+ BIND_ENUM_CONSTANT(TONE_MAPPER_ACES_FITTED);
BIND_ENUM_CONSTANT(DOF_BLUR_QUALITY_LOW);
BIND_ENUM_CONSTANT(DOF_BLUR_QUALITY_MEDIUM);
diff --git a/scene/resources/environment.h b/scene/resources/environment.h
index f4fb001da3e7..7001ea3fc8d3 100644
--- a/scene/resources/environment.h
+++ b/scene/resources/environment.h
@@ -56,7 +56,8 @@ class Environment : public Resource {
TONE_MAPPER_LINEAR,
TONE_MAPPER_REINHARDT,
TONE_MAPPER_FILMIC,
- TONE_MAPPER_ACES
+ TONE_MAPPER_ACES,
+ TONE_MAPPER_ACES_FITTED
};
enum GlowBlendMode {
diff --git a/servers/visual_server.cpp b/servers/visual_server.cpp
index 96cab1d0d40f..903063e293d6 100644
--- a/servers/visual_server.cpp
+++ b/servers/visual_server.cpp
@@ -2504,6 +2504,7 @@ void VisualServer::_bind_methods() {
BIND_ENUM_CONSTANT(ENV_TONE_MAPPER_REINHARD);
BIND_ENUM_CONSTANT(ENV_TONE_MAPPER_FILMIC);
BIND_ENUM_CONSTANT(ENV_TONE_MAPPER_ACES);
+ BIND_ENUM_CONSTANT(ENV_TONE_MAPPER_ACES_FITTED);
BIND_ENUM_CONSTANT(ENV_SSAO_QUALITY_LOW);
BIND_ENUM_CONSTANT(ENV_SSAO_QUALITY_MEDIUM);
diff --git a/servers/visual_server.h b/servers/visual_server.h
index 28a17caf0f07..306bb7bf5a86 100644
--- a/servers/visual_server.h
+++ b/servers/visual_server.h
@@ -778,7 +778,8 @@ class VisualServer : public Object {
ENV_TONE_MAPPER_LINEAR,
ENV_TONE_MAPPER_REINHARD,
ENV_TONE_MAPPER_FILMIC,
- ENV_TONE_MAPPER_ACES
+ ENV_TONE_MAPPER_ACES,
+ ENV_TONE_MAPPER_ACES_FITTED
};
virtual void environment_set_tonemap(RID p_env, EnvironmentToneMapper p_tone_mapper, float p_exposure, float p_white, bool p_auto_exposure, float p_min_luminance, float p_max_luminance, float p_auto_exp_speed, float p_auto_exp_grey) = 0;