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Filmic HDR tone mapping

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RealBadAngel authored and kwolekr committed Feb 9, 2016
1 parent 180893e commit eb3840a3f88dd9902ff1c5ea50d90a7f33e08d82
@@ -326,6 +326,11 @@ fsaa (FSAA) enum 0 0,1,2,4,8,16
# Thy only work with the OpenGL video backend.
enable_shaders (Shaders) bool true

[****Tone Mapping]

# Enables filmic tone mapping
tone_mapping (Filmic tone mapping) bool false

[****Bumpmapping]

# Enables bumpmapping for textures. Normalmaps need to be supplied by the texture pack
@@ -20,6 +20,38 @@ bool normalTexturePresent = false;
const float e = 2.718281828459;
const float BS = 10.0;

#ifdef ENABLE_TONE_MAPPING

/* Hable's UC2 Tone mapping parameters
A = 0.22;
B = 0.30;
C = 0.10;
D = 0.20;
E = 0.01;
F = 0.30;
W = 11.2;
equation used: ((x * (A * x + C * B) + D * E) / (x * (A * x + B) + D * F)) - E / F
*/

vec3 uncharted2Tonemap(vec3 x)
{
return ((x * (0.22 * x + 0.03) + 0.002) / (x * (0.22 * x + 0.3) + 0.06)) - 0.03334;
}

vec4 applyToneMapping(vec4 color)
{
color = vec4(pow(color.rgb, vec3(2.2)), color.a);
const float gamma = 1.6;
const float exposureBias = 5.5;
color.rgb = uncharted2Tonemap(exposureBias * color.rgb);
// Precalculated white_scale from
//vec3 whiteScale = 1.0 / uncharted2Tonemap(vec3(W));
vec3 whiteScale = vec3(1.036015346);
color.rgb *= whiteScale;
return vec4(pow(color.rgb, vec3(1.0 / gamma)), color.a);
}
#endif

void get_texture_flags()
{
vec4 flags = texture2D(textureFlags, vec2(0.0, 0.0));
@@ -160,22 +192,26 @@ void main(void)
color = base.rgb;
#endif

vec4 col = vec4(color.rgb * gl_Color.rgb, 1.0);

#if MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE
float alpha = gl_Color.a;
vec4 col = vec4(color.rgb, alpha);
col *= gl_Color;
if (fogDistance != 0.0) {
float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
alpha = mix(alpha, 0.0, d);
}
gl_FragColor = vec4(col.rgb, alpha);
col = vec4(col.rgb, alpha);
#else
vec4 col = vec4(color.rgb, base.a);
col *= gl_Color;
if (fogDistance != 0.0) {
float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
col = mix(col, skyBgColor, d);
}
gl_FragColor = vec4(col.rgb, base.a);
col = vec4(col.rgb, base.a);
#endif

#ifdef ENABLE_TONE_MAPPING
gl_FragColor = applyToneMapping(col);
#else
gl_FragColor = col;
#endif
}
@@ -22,6 +22,38 @@ bool texSeamless = false;
const float e = 2.718281828459;
const float BS = 10.0;

#ifdef ENABLE_TONE_MAPPING

/* Hable's UC2 Tone mapping parameters
A = 0.22;
B = 0.30;
C = 0.10;
D = 0.20;
E = 0.01;
F = 0.30;
W = 11.2;
equation used: ((x * (A * x + C * B) + D * E) / (x * (A * x + B) + D * F)) - E / F
*/

vec3 uncharted2Tonemap(vec3 x)
{
return ((x * (0.22 * x + 0.03) + 0.002) / (x * (0.22 * x + 0.3) + 0.06)) - 0.03334;
}

vec4 applyToneMapping(vec4 color)
{
color = vec4(pow(color.rgb, vec3(2.2)), color.a);
const float gamma = 1.6;
const float exposureBias = 5.5;
color.rgb = uncharted2Tonemap(exposureBias * color.rgb);
// Precalculated white_scale from
//vec3 whiteScale = 1.0 / uncharted2Tonemap(vec3(W));
vec3 whiteScale = vec3(1.036015346);
color.rgb *= whiteScale;
return vec4(pow(color.rgb, vec3(1.0 / gamma)), color.a);
}
#endif

void get_texture_flags()
{
vec4 flags = texture2D(textureFlags, vec2(0.0, 0.0));
@@ -116,22 +148,26 @@ vec4 base = texture2D(baseTexture, uv).rgba;
color = base.rgb;
#endif

vec4 col = vec4(color.rgb * gl_Color.rgb, 1.0);

#if MATERIAL_TYPE == TILE_MATERIAL_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_LIQUID_OPAQUE
float alpha = gl_Color.a;
vec4 col = vec4(color.rgb, alpha);
col *= gl_Color;
if(fogDistance != 0.0){
if (fogDistance != 0.0) {
float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
alpha = mix(alpha, 0.0, d);
}
gl_FragColor = vec4(col.rgb, alpha);
col = vec4(col.rgb, alpha);
#else
vec4 col = vec4(color.rgb, base.a);
col *= gl_Color;
if(fogDistance != 0.0){
if (fogDistance != 0.0) {
float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
col = mix(col, skyBgColor, d);
}
gl_FragColor = vec4(col.rgb, base.a);
col = vec4(col.rgb, base.a);
#endif

#ifdef ENABLE_TONE_MAPPING
gl_FragColor = applyToneMapping(col);
#else
gl_FragColor = col;
#endif
}
@@ -353,6 +353,12 @@
# type: bool
# enable_shaders = true

##### Tone mapping
# Enables filmic tone mapping.
# Requires shaders to be enabled.
# type: bool
# tone_mapping = false

##### Bumpmapping

# Enables bumpmapping for textures. Normalmaps need to be supplied by the texture pack
@@ -160,6 +160,7 @@ void set_default_settings(Settings *settings)
settings->setDefault("texture_clean_transparent", "false");
settings->setDefault("texture_min_size", "64");
settings->setDefault("preload_item_visuals", "false");
settings->setDefault("tone_mapping", "false");
settings->setDefault("enable_bumpmapping", "false");
settings->setDefault("enable_parallax_occlusion", "false");
settings->setDefault("generate_normalmaps", "false");
@@ -764,6 +764,9 @@ ShaderInfo generate_shader(std::string name, u8 material_type, u8 drawtype,
else
shaders_header += "0\n";

if (g_settings->getBool("tone_mapping"))
shaders_header += "#define ENABLE_TONE_MAPPING\n";

if(pixel_program != "")
pixel_program = shaders_header + pixel_program;
if(vertex_program != "")

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