STEPS TO REPRODUCE 1. Configure visual bell in Accessibility settings to invert the screen 2. Run qdbus org.kde.KWin /org/kde/KWin/Effect/SystemBell1 org.kde.KWin.Effect.SystemBell1.triggerScreen OBSERVED RESULT Screen flashes white EXPECTED RESULT Screen inverts SOFTWARE/OS VERSIONS KDE Plasma Version: master KDE Frameworks Version: master Qt Version: 6.8 ADDITIONAL INFORMATION Bisected to https://invent.kde.org/plasma/kwin/-/commit/bea4d1064ceecafb5e3251b061c8aae8d0b9e909
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:""
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/6579
Git commit 7b512872f97425f3aefa61f3c06bb0950f60724e by Nicolas Fella. Committed on 08/10/2024 at 19:46. Pushed by nicolasfella into branch 'master'. plugins/systembell: Adapt shader to color management changes M +2 -2 src/plugins/systembell/shaders/invert.frag M +2 -2 src/plugins/systembell/shaders/invert_core.frag https://invent.kde.org/plasma/kwin/-/commit/7b512872f97425f3aefa61f3c06bb0950f60724e
Git commit d3e360c5f0a8b4f05f7f9ab1cac68a8d7376ae2c by Nicolas Fella. Committed on 08/10/2024 at 19:58. Pushed by nicolasfella into branch 'Plasma/6.2'. plugins/systembell: Adapt shader to color management changes (cherry picked from commit 7b512872f97425f3aefa61f3c06bb0950f60724e) M +2 -2 src/plugins/systembell/shaders/invert.frag M +2 -2 src/plugins/systembell/shaders/invert_core.frag https://invent.kde.org/plasma/kwin/-/commit/d3e360c5f0a8b4f05f7f9ab1cac68a8d7376ae2c