https://bugs.kde.org/show_bug.cgi?id=494305
--- Comment #1 from Nicolas Fella <nicolas.fe...@gmx.de> ---
kwin_scene_opengl: 0x2: 0:217(8): error: no matching function for call to
`nitsToEncoding(vec4, int, float)'; candidates are:
kwin_scene_opengl: 0x3: 0:217(8): error: vec4 nitsToEncoding(vec4, int,
float, float)
kwin_scene_opengl: 0x4: 0:222(8): error: no matching function for call to
`encodingToNits(vec4, int, float)'; candidates are:
kwin_scene_opengl: 0x5: 0:222(8): error: vec4 encodingToNits(vec4, int,
float, float)
kwin_scene_opengl: Failed to compile fragment shader:
"0:217(8): error: no matching function for call to `nitsToEncoding(vec4, int,
float)'; candidates are:\n0:217(8): error: vec4 nitsToEncoding(vec4, int,
float, float)\n0:222(8): error: no matching function for call to
`encodingToNits(vec4, int, float)'; candidates are:\n0:222(8): error: vec4
encodingToNits(vec4, int, float, float)\n\x00"
kwin_scene_opengl: line 0:"#version 140"
kwin_scene_opengl: line 1:""
kwin_scene_opengl: line 2:"const int sRGB_EOTF = 0;"
kwin_scene_opengl: line 3:"const int linear_EOTF = 1;"
kwin_scene_opengl: line 4:"const int PQ_EOTF = 2;"
kwin_scene_opengl: line 5:"const int gamma22_EOTF = 3;"
kwin_scene_opengl: line 6:""
kwin_scene_opengl: line 7:"uniform mat4 colorimetryTransform;"
kwin_scene_opengl: line 8:""
kwin_scene_opengl: line 9:"uniform int sourceNamedTransferFunction;"
kwin_scene_opengl: line 10:"/**"
kwin_scene_opengl: line 11:" * x: min luminance"
kwin_scene_opengl: line 12:" * y: max luminance - min luminance"
kwin_scene_opengl: line 13:" */"
kwin_scene_opengl: line 14:"uniform vec2 sourceTransferFunctionParams;"
kwin_scene_opengl: line 15:""
kwin_scene_opengl: line 16:"uniform int destinationNamedTransferFunction;"
kwin_scene_opengl: line 17:"/**"
kwin_scene_opengl: line 18:" * x: min luminance"
kwin_scene_opengl: line 19:" * y: max luminance - min luminance"
kwin_scene_opengl: line 20:" */"
kwin_scene_opengl: line 21:"uniform vec2 destinationTransferFunctionParams;"
kwin_scene_opengl: line 22:""
kwin_scene_opengl: line 23:"// in nits"
kwin_scene_opengl: line 24:"uniform float sourceReferenceLuminance;"
kwin_scene_opengl: line 25:"uniform float maxTonemappingLuminance;"
kwin_scene_opengl: line 26:"uniform float destinationReferenceLuminance;"
kwin_scene_opengl: line 27:"uniform float maxDestinationLuminance;"
kwin_scene_opengl: line 28:""
kwin_scene_opengl: line 29:"uniform mat4 destinationToLMS;"
kwin_scene_opengl: line 30:"uniform mat4 lmsToDestination;"
kwin_scene_opengl: line 31:""
kwin_scene_opengl: line 32:"vec3 linearToPq(vec3 linear) {"
kwin_scene_opengl: line 33:" const float c1 = 0.8359375;"
kwin_scene_opengl: line 34:" const float c2 = 18.8515625;"
kwin_scene_opengl: line 35:" const float c3 = 18.6875;"
kwin_scene_opengl: line 36:" const float m1 = 0.1593017578125;"
kwin_scene_opengl: line 37:" const float m2 = 78.84375;"
kwin_scene_opengl: line 38:" vec3 powed = pow(clamp(linear, vec3(0),
vec3(1)), vec3(m1));"
kwin_scene_opengl: line 39:" vec3 num = vec3(c1) + c2 * powed;"
kwin_scene_opengl: line 40:" vec3 denum = vec3(1.0) + c3 * powed;"
kwin_scene_opengl: line 41:" return pow(num / denum, vec3(m2));"
kwin_scene_opengl: line 42:"}"
kwin_scene_opengl: line 43:"vec3 pqToLinear(vec3 pq) {"
kwin_scene_opengl: line 44:" const float c1 = 0.8359375;"
kwin_scene_opengl: line 45:" const float c2 = 18.8515625;"
kwin_scene_opengl: line 46:" const float c3 = 18.6875;"
kwin_scene_opengl: line 47:" const float m1_inv = 1.0 / 0.1593017578125;"
kwin_scene_opengl: line 48:" const float m2_inv = 1.0 / 78.84375;"
kwin_scene_opengl: line 49:" vec3 powed = pow(clamp(pq, vec3(0.0),
vec3(1.0)), vec3(m2_inv));"
kwin_scene_opengl: line 50:" vec3 num = max(powed - c1, vec3(0.0));"
kwin_scene_opengl: line 51:" vec3 den = c2 - c3 * powed;"
kwin_scene_opengl: line 52:" return pow(num / den, vec3(m1_inv));"
kwin_scene_opengl: line 53:"}"
kwin_scene_opengl: line 54:"float singleLinearToPq(float linear) {"
kwin_scene_opengl: line 55:" const float c1 = 0.8359375;"
kwin_scene_opengl: line 56:" const float c2 = 18.8515625;"
kwin_scene_opengl: line 57:" const float c3 = 18.6875;"
kwin_scene_opengl: line 58:" const float m1 = 0.1593017578125;"
kwin_scene_opengl: line 59:" const float m2 = 78.84375;"
kwin_scene_opengl: line 60:" float powed = pow(clamp(linear, 0.0, 1.0),
m1);"
kwin_scene_opengl: line 61:" float num = c1 + c2 * powed;"
kwin_scene_opengl: line 62:" float denum = 1.0 + c3 * powed;"
kwin_scene_opengl: line 63:" return pow(num / denum, m2);"
kwin_scene_opengl: line 64:"}"
kwin_scene_opengl: line 65:"float singlePqToLinear(float pq) {"
kwin_scene_opengl: line 66:" const float c1 = 0.8359375;"
kwin_scene_opengl: line 67:" const float c2 = 18.8515625;"
kwin_scene_opengl: line 68:" const float c3 = 18.6875;"
kwin_scene_opengl: line 69:" const float m1_inv = 1.0 / 0.1593017578125;"
kwin_scene_opengl: line 70:" const float m2_inv = 1.0 / 78.84375;"
kwin_scene_opengl: line 71:" float powed = pow(clamp(pq, 0.0, 1.0),
m2_inv);"
kwin_scene_opengl: line 72:" float num = max(powed - c1, 0.0);"
kwin_scene_opengl: line 73:" float den = c2 - c3 * powed;"
kwin_scene_opengl: line 74:" return pow(num / den, m1_inv);"
kwin_scene_opengl: line 75:"}"
kwin_scene_opengl: line 76:"vec3 srgbToLinear(vec3 color) {"
kwin_scene_opengl: line 77:" bvec3 isLow = lessThanEqual(color,
vec3(0.04045));"
kwin_scene_opengl: line 78:" vec3 loPart = color / 12.92;"
kwin_scene_opengl: line 79:" vec3 hiPart = pow((color + 0.055) / 1.055,
vec3(12.0 / 5.0));"
kwin_scene_opengl: line 80:"#if __VERSION__ >= 130"
kwin_scene_opengl: line 81:" return mix(hiPart, loPart, isLow);"
kwin_scene_opengl: line 82:"#else"
kwin_scene_opengl: line 83:" return mix(hiPart, loPart, vec3(isLow.r ? 1.0 :
0.0, isLow.g ? 1.0 : 0.0, isLow.b ? 1.0 : 0.0));"
kwin_scene_opengl: line 84:"#endif"
kwin_scene_opengl: line 85:"}"
kwin_scene_opengl: line 86:""
kwin_scene_opengl: line 87:"vec3 linearToSrgb(vec3 color) {"
kwin_scene_opengl: line 88:" bvec3 isLow = lessThanEqual(color,
vec3(0.0031308));"
kwin_scene_opengl: line 89:" vec3 loPart = color * 12.92;"
kwin_scene_opengl: line 90:" vec3 hiPart = pow(color, vec3(5.0 / 12.0)) *
1.055 - 0.055;"
kwin_scene_opengl: line 91:"#if __VERSION__ >= 130"
kwin_scene_opengl: line 92:" return mix(hiPart, loPart, isLow);"
kwin_scene_opengl: line 93:"#else"
kwin_scene_opengl: line 94:" return mix(hiPart, loPart, vec3(isLow.r ? 1.0 :
0.0, isLow.g ? 1.0 : 0.0, isLow.b ? 1.0 : 0.0));"
kwin_scene_opengl: line 95:"#endif"
kwin_scene_opengl: line 96:"}"
kwin_scene_opengl: line 97:""
kwin_scene_opengl: line 98:"const mat3 toICtCp = mat3("
kwin_scene_opengl: line 99:" 0.5, 1.613769531250, 4.378173828125,"
kwin_scene_opengl: line 100:" 0.5, -3.323486328125, -4.245605468750,"
kwin_scene_opengl: line 101:" 0.0, 1.709716796875, -0.132568359375"
kwin_scene_opengl: line 102:");"
kwin_scene_opengl: line 103:"const mat3 fromICtCp = mat3("
kwin_scene_opengl: line 104:" 1.0, 1.0, 1.0,"
kwin_scene_opengl: line 105:" 0.00860903703793, -0.008609037037,
0.56031335710680,"
kwin_scene_opengl: line 106:" 0.11102962500303, -0.111029625003,
-0.32062717498732"
kwin_scene_opengl: line 107:");"
kwin_scene_opengl: line 108:""
kwin_scene_opengl: line 109:"vec3 doTonemapping(vec3 color) {"
kwin_scene_opengl: line 110:" if (maxTonemappingLuminance <
maxDestinationLuminance * 1.01) {"
kwin_scene_opengl: line 111:" // clipping is enough"
kwin_scene_opengl: line 112:" return clamp(color.rgb, vec3(0.0),
vec3(maxDestinationLuminance));"
kwin_scene_opengl: line 113:" }"
kwin_scene_opengl: line 114:""
kwin_scene_opengl: line 115:" // first, convert to ICtCp, to properly split
luminance and color"
kwin_scene_opengl: line 116:" // intensity is PQ-encoded luminance"
kwin_scene_opengl: line 117:" vec3 lms = (destinationToLMS * vec4(color,
1.0)).rgb;"
kwin_scene_opengl: line 118:" vec3 lms_PQ = linearToPq(lms / 10000.0);"
kwin_scene_opengl: line 119:" vec3 ICtCp = toICtCp * lms_PQ;"
kwin_scene_opengl: line 120:" float luminance = singlePqToLinear(ICtCp.r) *
10000.0;"
kwin_scene_opengl: line 121:""
kwin_scene_opengl: line 122:" float inputRange = maxTonemappingLuminance /
destinationReferenceLuminance;"
kwin_scene_opengl: line 123:" float outputRange = maxDestinationLuminance /
destinationReferenceLuminance;"
kwin_scene_opengl: line 124:" // how much dynamic range we need to decently
present the content"
kwin_scene_opengl: line 125:" float minDecentRange = min(inputRange, 1.5);"
kwin_scene_opengl: line 126:" // if the output doesn't provide enough HDR
headroom for the tone mapper to do a good job, dim the image to create some"
kwin_scene_opengl: line 127:" float referenceDimming = 1.0 /
clamp(outputRange / minDecentRange, 1.0, minDecentRange);"
kwin_scene_opengl: line 128:" float outputReferenceLuminance =
destinationReferenceLuminance * referenceDimming;"
kwin_scene_opengl: line 129:""
kwin_scene_opengl: line 130:" // keep it linear up to the reference
luminance"
kwin_scene_opengl: line 131:" float low = min(luminance * referenceDimming,
outputReferenceLuminance);"
kwin_scene_opengl: line 132:" // and apply a nonlinear curve above, to
reduce the luminance without completely removing differences"
kwin_scene_opengl: line 133:" float relativeHighlight = clamp((luminance /
destinationReferenceLuminance - 1.0) / (inputRange - 1.0), 0.0, 1.0);"
kwin_scene_opengl: line 134:" const float e = 2.718281828459045;"
kwin_scene_opengl: line 135:" float high = log(relativeHighlight * (e - 1.0)
+ 1.0) * (maxDestinationLuminance - outputReferenceLuminance);"
kwin_scene_opengl: line 136:" luminance = low + high;"
kwin_scene_opengl: line 137:""
kwin_scene_opengl: line 138:" // last, convert back to rgb"
kwin_scene_opengl: line 139:" ICtCp.r = singleLinearToPq(luminance /
10000.0);"
kwin_scene_opengl: line 140:" return (lmsToDestination *
vec4(pqToLinear(fromICtCp * ICtCp), 1.0)).rgb * 10000.0;"
kwin_scene_opengl: line 141:"}"
kwin_scene_opengl: line 142:""
kwin_scene_opengl: line 143:"vec4 encodingToNits(vec4 color, int
sourceTransferFunction, float luminanceOffset, float luminanceScale) {"
kwin_scene_opengl: line 144:" if (sourceTransferFunction == sRGB_EOTF) {"
kwin_scene_opengl: line 145:" color.rgb /= max(color.a, 0.001);"
kwin_scene_opengl: line 146:" color.rgb = srgbToLinear(color.rgb) *
luminanceScale + vec3(luminanceOffset);"
kwin_scene_opengl: line 147:" color.rgb *= color.a;"
kwin_scene_opengl: line 148:" } else if (sourceTransferFunction ==
linear_EOTF) {"
kwin_scene_opengl: line 149:" color.rgb = color.rgb * luminanceScale +
vec3(luminanceOffset);"
kwin_scene_opengl: line 150:" } else if (sourceTransferFunction == PQ_EOTF)
{"
kwin_scene_opengl: line 151:" color.rgb /= max(color.a, 0.001);"
kwin_scene_opengl: line 152:" color.rgb = pqToLinear(color.rgb) *
luminanceScale + vec3(luminanceOffset);"
kwin_scene_opengl: line 153:" color.rgb *= color.a;"
kwin_scene_opengl: line 154:" } else if (sourceTransferFunction ==
gamma22_EOTF) {"
kwin_scene_opengl: line 155:" color.rgb /= max(color.a, 0.001);"
kwin_scene_opengl: line 156:" color.rgb = pow(max(color.rgb, vec3(0.0)),
vec3(2.2)) * luminanceScale + vec3(luminanceOffset);"
kwin_scene_opengl: line 157:" color.rgb *= color.a;"
kwin_scene_opengl: line 158:" }"
kwin_scene_opengl: line 159:" return color;"
kwin_scene_opengl: line 160:"}"
kwin_scene_opengl: line 161:""
kwin_scene_opengl: line 162:"vec4
sourceEncodingToNitsInDestinationColorspace(vec4 color) {"
kwin_scene_opengl: line 163:" color = encodingToNits(color,
sourceNamedTransferFunction, sourceTransferFunctionParams.x,
sourceTransferFunctionParams.y);"
kwin_scene_opengl: line 164:" color.rgb = (colorimetryTransform *
vec4(color.rgb, 1.0)).rgb;"
kwin_scene_opengl: line 165:" return vec4(doTonemapping(color.rgb),
color.a);"
kwin_scene_opengl: line 166:"}"
kwin_scene_opengl: line 167:""
kwin_scene_opengl: line 168:"vec4 nitsToEncoding(vec4 color, int
destinationTransferFunction, float luminanceOffset, float luminanceScale) {"
kwin_scene_opengl: line 169:" if (destinationTransferFunction == sRGB_EOTF)
{"
kwin_scene_opengl: line 170:" color.rgb /= max(color.a, 0.001);"
kwin_scene_opengl: line 171:" color.rgb = linearToSrgb((color.rgb -
vec3(luminanceOffset)) / luminanceScale);"
kwin_scene_opengl: line 172:" color.rgb *= color.a;"
kwin_scene_opengl: line 173:" } else if (destinationTransferFunction ==
linear_EOTF) {"
kwin_scene_opengl: line 174:" color.rgb = (color.rgb -
vec3(luminanceOffset)) / luminanceScale;"
kwin_scene_opengl: line 175:" } else if (destinationTransferFunction ==
PQ_EOTF) {"
kwin_scene_opengl: line 176:" color.rgb /= max(color.a, 0.001);"
kwin_scene_opengl: line 177:" color.rgb = linearToPq((color.rgb -
vec3(luminanceOffset)) / luminanceScale);"
kwin_scene_opengl: line 178:" color.rgb *= color.a;"
kwin_scene_opengl: line 179:" } else if (destinationTransferFunction ==
gamma22_EOTF) {"
kwin_scene_opengl: line 180:" color.rgb /= max(color.a, 0.001);"
kwin_scene_opengl: line 181:" color.rgb = pow(max((color.rgb -
vec3(luminanceOffset)) / luminanceScale, vec3(0.0)), vec3(1.0 / 2.2));"
kwin_scene_opengl: line 182:" color.rgb *= color.a;"
kwin_scene_opengl: line 183:" }"
kwin_scene_opengl: line 184:" return color;"
kwin_scene_opengl: line 185:"}"
kwin_scene_opengl: line 186:""
kwin_scene_opengl: line 187:"vec4 nitsToDestinationEncoding(vec4 color) {"
kwin_scene_opengl: line 188:" return nitsToEncoding(color,
destinationNamedTransferFunction, destinationTransferFunctionParams.x,
destinationTransferFunctionParams.y);"
kwin_scene_opengl: line 189:"}"
kwin_scene_opengl: line 190:""
kwin_scene_opengl: line 191:"uniform float saturation;"
kwin_scene_opengl: line 192:"uniform vec3 primaryBrightness;"
kwin_scene_opengl: line 193:""
kwin_scene_opengl: line 194:"vec4 adjustSaturation(vec4 color) {"
kwin_scene_opengl: line 195:" // this calculates the Y component of the XYZ
color representation for the color,"
kwin_scene_opengl: line 196:" // which roughly corresponds to the brightness
of the RGB tuple"
kwin_scene_opengl: line 197:" float Y = dot(color.rgb, primaryBrightness);"
kwin_scene_opengl: line 198:" return vec4(mix(vec3(Y), color.rgb,
saturation), color.a);"
kwin_scene_opengl: line 199:"}"
kwin_scene_opengl: line 200:""
kwin_scene_opengl: line 201:""
kwin_scene_opengl: line 202:"uniform sampler2D sampler;"
kwin_scene_opengl: line 203:"uniform vec4 modulation;"
kwin_scene_opengl: line 204:""
kwin_scene_opengl: line 205:"in vec2 texcoord0;"
kwin_scene_opengl: line 206:""
kwin_scene_opengl: line 207:"out vec4 fragColor;"
kwin_scene_opengl: line 208:""
kwin_scene_opengl: line 209:"void main()"
kwin_scene_opengl: line 210:"{"
kwin_scene_opengl: line 211:" vec4 tex = texture(sampler, texcoord0);"
kwin_scene_opengl: line 212:" tex =
sourceEncodingToNitsInDestinationColorspace(tex);"
kwin_scene_opengl: line 213:" tex = adjustSaturation(tex);"
kwin_scene_opengl: line 214:""
kwin_scene_opengl: line 215:" // to preserve perceptual contrast, apply the
inversion in gamma 2.2 space"
kwin_scene_opengl: line 216:" tex = nitsToEncoding(tex, gamma22_EOTF,
destinationReferenceLuminance);"
kwin_scene_opengl: line 217:" tex.rgb /= max(0.001, tex.a);"
kwin_scene_opengl: line 218:" tex.rgb = vec3(1.0) - tex.rgb;"
kwin_scene_opengl: line 219:" tex *= modulation;"
kwin_scene_opengl: line 220:" tex.rgb *= tex.a;"
kwin_scene_opengl: line 221:" tex = encodingToNits(tex, gamma22_EOTF,
destinationReferenceLuminance);"
kwin_scene_opengl: line 222:""
kwin_scene_opengl: line 223:" fragColor = nitsToDestinationEncoding(tex);"
kwin_scene_opengl: line 224:"}"
kwin_scene_opengl: line 225:""
kwin_scene_opengl: line 226:""
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