"Shader Compilation Error" #246
Comments
|
I imagine this is Skia's fault, not |
|
This has already been reported |
|
It is probably not even skia's fault, but Apple's. |
|
Mac os x's GL stack is significantly behind others. |
|
I can't reproduce your shader problem on Linux. Not quite the same as #214 , as I see these errors instead: BTW, your script relies on a specific way of installing dukpy - getting it from the Linux distribution (Redhat Fedora in my case), it is installed without any of the *.py scripts . Just This may be a packaging bug on Redhat's part, in which case you (or I) should file at https://bugzilla.redhat.com/ |
|
Let me know to retry if you can fix the |
|
Ah, heh, the syntax error is unfortunately expected behavior! This is the browser running a website that uses JS syntax not supported by DukPy. Will look into RedHat |
|
I just get a window of your web site, and those messages. So i assume that's correct behavior? In that case this is mac os x specific and same as #214 . As for the packaging issue, the file listing of the package is https://koji.fedoraproject.org/koji/rpminfo?rpmID=35288394 - missing all the *.py files. I am not familiar with it, and how it should be. |
|
Btw, the lab13 script also seems to be doing a busy wait and tie up one of my cpu's while it runs. (Just looking at my system load monitor). |
|
I’ll look, may be an issue |
|
Argh, the busy wait loop is the |
|
Closed as duplicate |
I get the following error when running a complex Skia application:
Shader Compilation Error
Shader compilation error ------------------------ 1 #version 110 2 3 4 float _determinant2(mat2 m) { 5 return m[0].x*m[1].y - m[0].y*m[1].x; 6 } 7 const float PI = 3.14159274; 8 const float PRECISION = 4.0; 9 const float NUM_TOTAL_EDGES = 16383.0; 10 uniform vec4 sk_RTAdjust; 11 uniform vec3 utessControlArgs_S0; 12 uniform vec4 uaffineMatrix_S0; 13 uniform vec2 utranslate_S0; 14 attribute vec4 pts01Attr; 15 attribute vec4 pts23Attr; 16 attribute vec2 argsAttr; 17 attribute float curveTypeAttr; 18 vec2 robust_normalize_diff_f2f2f2(vec2 a, vec2 b) { 19 vec2 diff = a - b; 20 if (diff == vec2(0.0)) { 21 return vec2(0.0); 22 } else { 23 float invMag = 1.0 / max(abs(diff.x), abs(diff.y)); 24 return normalize(invMag * diff); 25 } 26 } 27 vec2 unchecked_mix_f2f2f2f(vec2 a, vec2 b, float T) { 28 return ((b - a) * (vec2(T)) + (a)); 29 } 30 float wangs_formula_max_fdiff_p2_ff2f2f2f2f22(vec2 p0, vec2 p1, vec2 p2, vec2 p3, mat2 matrix) { 31 vec2 d0 = matrix * (((vec2(-2.0)) * (p1) + (p2)) + p0); 32 vec2 d1 = matrix * (((vec2(-2.0)) * (p2) + (p3)) + p1); 33 return max(dot(d0, d0), dot(d1, d1)); 34 } 35 float wangs_formula_conic_p2_fff2f2f2f(float _precision_, vec2 p0, vec2 p1, vec2 p2, float w) { 36 vec2 C = (min(min(p0, p1), p2) + max(max(p0, p1), p2)) * 0.5; 37 p0 -= C; 38 p1 -= C; 39 p2 -= C; 40 float m = sqrt(max(max(dot(p0, p0), dot(p1, p1)), dot(p2, p2))); 41 vec2 dp = ((vec2(-2.0 * w)) * (p1) + (p0)) + p2; 42 float dw = abs(((-2.0) * (w) + (2.0))); 43 float rp_minus_1 = max(0.0, ((m) * (_precision_) + (-1.0))); 44 float numer = length(dp) * _precision_ + rp_minus_1 * dw; 45 float denom = 4.0 * min(w, 1.0); 46 return numer / denom; 47 } 48 void main() { 49 float NUM_RADIAL_SEGMENTS_PER_RADIAN = utessControlArgs_S0.x; 50 float JOIN_TYPE = utessControlArgs_S0.y; 51 float STROKE_RADIUS = utessControlArgs_S0.z; 52 mat2 AFFINE_MATRIX = mat2(uaffineMatrix_S0.xy, uaffineMatrix_S0.zw); 53 vec2 TRANSLATE = utranslate_S0; 54 vec2 p0 = pts01Attr.xy; 55 vec2 p1 = pts01Attr.zw; 56 vec2 p2 = pts23Attr.xy; 57 vec2 p3 = pts23Attr.zw; 58 vec2 lastControlPoint = argsAttr; 59 float w = -1.0; 60 if (curveTypeAttr != 0.0) { 61 w = p3.x; 62 p3 = p2; 63 } 64 float numParametricSegments; 65 if (w < 0.0) { 66 if (p0 == p1 && p2 == p3) { 67 numParametricSegments = 1.0; 68 } else { 69 float _0_m = wangs_formula_max_fdiff_p2_ff2f2f2f2f22(p0, p1, p2, p3, AFFINE_MATRIX); 70 numParametricSegments = max(ceil(sqrt(3.0 * sqrt(_0_m))), 1.0); 71 } 72 } else { 73 float _1_n2 = wangs_formula_conic_p2_fff2f2f2f(PRECISION, AFFINE_MATRIX * p0, AFFINE_MATRIX * p1, AFFINE_MATRIX * p2, w); 74 numParametricSegments = max(ceil(sqrt(_1_n2)), 1.0); 75 } 76 vec2 tan0 = robust_normalize_diff_f2f2f2(p0 == p1 ? (p1 == p2 ? p3 : p2) : p1, p0); 77 vec2 tan1 = robust_normalize_diff_f2f2f2(p3, p3 == p2 ? (p2 == p1 ? p0 : p1) : p2); 78 if (tan0 == vec2(0.0)) { 79 tan0 = vec2(1.0, 0.0); 80 tan1 = vec2(-1.0, 0.0); 81 } 82 float edgeID = float(gl_VertexID >> 1); 83 if ((gl_VertexID & 1) != 0) { 84 edgeID = -edgeID; 85 } 86 float numEdgesInJoin = 4.0; 87 float turn = _determinant2(mat2(p2 - p0, p3 - p1)); 88 float combinedEdgeID = abs(edgeID) - numEdgesInJoin; 89 if (combinedEdgeID < 0.0) { 90 tan1 = tan0; 91 if (lastControlPoint != p0) { 92 tan0 = robust_normalize_diff_f2f2f2(p0, lastControlPoint); 93 } 94 turn = _determinant2(mat2(tan0, tan1)); 95 } 96 float cosTheta = clamp(dot(tan0, tan1), -1.0, 1.0); 97 float rotation = acos(cosTheta); 98 if (turn < 0.0) { 99 rotation = -rotation; 100 } 101 float numRadialSegments; 102 float strokeOutset = sign(edgeID); 103 if (combinedEdgeID < 0.0) { 104 numRadialSegments = numEdgesInJoin - 2.0; 105 numParametricSegments = 1.0; 106 p3 = (p2 = (p1 = p0)); 107 combinedEdgeID += numRadialSegments + 1.0; 108 float sinEpsilon = 0.01; 109 bool tangentsNearlyParallel = abs(turn) * (1.0 / sqrt(dot(tan0, tan0) * dot(tan1, tan1))) < sinEpsilon; 110 if (!tangentsNearlyParallel || dot(tan0, tan1) < 0.0) { 111 if (combinedEdgeID >= 0.0) { 112 strokeOutset = turn < 0.0 ? min(strokeOutset, 0.0) : max(strokeOutset, 0.0); 113 } 114 } 115 combinedEdgeID = max(combinedEdgeID, 0.0); 116 } else { 117 float maxCombinedSegments = (NUM_TOTAL_EDGES - numEdgesInJoin) - 1.0; 118 numRadialSegments = max(ceil(abs(rotation) * NUM_RADIAL_SEGMENTS_PER_RADIAN), 1.0); 119 numRadialSegments = min(numRadialSegments, maxCombinedSegments); 120 numParametricSegments = min(numParametricSegments, (maxCombinedSegments - numRadialSegments) + 1.0); 121 } 122 float radsPerSegment = rotation / numRadialSegments; 123 float numCombinedSegments = (numParametricSegments + numRadialSegments) - 1.0; 124 bool isFinalEdge = combinedEdgeID >= numCombinedSegments; 125 if (combinedEdgeID > numCombinedSegments) { 126 strokeOutset = 0.0; 127 } 128 if (abs(edgeID) == 2.0) { 129 float _2_x = ((cosTheta) * (0.5) + (0.5)); 130 strokeOutset *= (_2_x * JOIN_TYPE) * JOIN_TYPE >= 1.0 ? (1.0 / sqrt(_2_x)) : sqrt(_2_x); 131 } 132 vec2 tangent; 133 vec2 strokeCoord; 134 if (combinedEdgeID != 0.0 && !isFinalEdge) { 135 vec2 A; 136 vec2 B; 137 vec2 C = p1 - p0; 138 vec2 D = p3 - p0; 139 if (w >= 0.0) { 140 C *= w; 141 B = 0.5 * D - C; 142 A = (w - 1.0) * D; 143 p1 *= w; 144 } else { 145 vec2 E = p2 - p1; 146 B = E - C; 147 A = ((vec2(-3.0)) * (E) + (D)); 148 } 149 vec2 B_ = B * (numParametricSegments * 2.0); 150 vec2 C_ = C * (numParametricSegments * numParametricSegments); 151 float lastParametricEdgeID = 0.0; 152 float maxParametricEdgeID = min(numParametricSegments - 1.0, combinedEdgeID); 153 float negAbsRadsPerSegment = -abs(radsPerSegment); 154 float maxRotation0 = (1.0 + combinedEdgeID) * abs(radsPerSegment); 155 for (int _0_exp = 4;_0_exp >= 0; --_0_exp) { 156 float testParametricID = lastParametricEdgeID + exp2(float(_0_exp)); 157 if (testParametricID <= maxParametricEdgeID) { 158 vec2 testTan = ((vec2(testParametricID)) * (A) + (B_)); 159 testTan = ((vec2(testParametricID)) * (testTan) + (C_)); 160 float cosRotation = dot(normalize(testTan), tan0); 161 float maxRotation = ((testParametricID) * (negAbsRadsPerSegment) + (maxRotation0)); 162 maxRotation = min(maxRotation, PI); 163 if (cosRotation >= cos(maxRotation)) { 164 lastParametricEdgeID = testParametricID; 165 } 166 } 167 } 168 float parametricT = lastParametricEdgeID / numParametricSegments; 169 float lastRadialEdgeID = combinedEdgeID - lastParametricEdgeID; 170 float angle0 = acos(clamp(tan0.x, -1.0, 1.0)); 171 angle0 = tan0.y >= 0.0 ? angle0 : -angle0; 172 float radialAngle = ((lastRadialEdgeID) * (radsPerSegment) + (angle0)); 173 tangent = vec2(cos(radialAngle), sin(radialAngle)); 174 vec2 norm = vec2(-tangent.y, tangent.x); 175 float a = dot(norm, A); 176 float b_over_2 = dot(norm, B); 177 float c = dot(norm, C); 178 float discr_over_4 = max(b_over_2 * b_over_2 - a * c, 0.0); 179 float q = sqrt(discr_over_4); 180 if (b_over_2 > 0.0) { 181 q = -q; 182 } 183 q -= b_over_2; 184 float _5qa = (-0.5 * q) * a; 185 vec2 root = abs(((q) * (q) + (_5qa))) < abs(((a) * (c) + (_5qa))) ? vec2(q, a) : vec2(c, q); 186 float radialT = root.y != 0.0 ? root.x / root.y : 0.0; 187 radialT = clamp(radialT, 0.0, 1.0); 188 if (lastRadialEdgeID == 0.0) { 189 radialT = 0.0; 190 } 191 float T = max(parametricT, radialT); 192 vec2 ab = unchecked_mix_f2f2f2f(p0, p1, T); 193 vec2 bc = unchecked_mix_f2f2f2f(p1, p2, T); 194 vec2 cd = unchecked_mix_f2f2f2f(p2, p3, T); 195 vec2 abc = unchecked_mix_f2f2f2f(ab, bc, T); 196 vec2 bcd = unchecked_mix_f2f2f2f(bc, cd, T); 197 vec2 abcd = unchecked_mix_f2f2f2f(abc, bcd, T); 198 float u = ((w - 1.0) * (T) + (1.0)); 199 float v = (w + 1.0) - u; 200 float uv = ((v - u) * (T) + (u)); 201 if (T != radialT) { 202 tangent = w >= 0.0 ? robust_normalize_diff_f2f2f2(bc * u, ab * v) : robust_normalize_diff_f2f2f2(bcd, abc); 203 } 204 strokeCoord = w >= 0.0 ? abc / uv : abcd; 205 } else { 206 tangent = combinedEdgeID == 0.0 ? tan0 : tan1; 207 strokeCoord = combinedEdgeID == 0.0 ? p0 : p3; 208 } 209 vec2 ortho = vec2(tangent.y, -tangent.x); 210 strokeCoord += ortho * (STROKE_RADIUS * strokeOutset); 211 vec2 devCoord = AFFINE_MATRIX * strokeCoord + TRANSLATE; 212 gl_Position = vec4(devCoord, 0.0, 1.0); 213 gl_Position = vec4(gl_Position.xy * sk_RTAdjust.xz + gl_Position.ww * sk_RTAdjust.yw, 0.0, gl_Position.w); 214 } 215 Errors: ERROR: 0:82: Use of undeclared identifier 'gl_VertexID' ERROR: 0:83: Use of undeclared identifier 'gl_VertexID' ERROR: 0:84: Use of undeclared identifier 'edgeID' ERROR: 0:84: Use of undeclared identifier 'edgeID' ERROR: 0:88: Use of undeclared identifier 'edgeID' ERROR: 0:89: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:102: Use of undeclared identifier 'edgeID' ERROR: 0:103: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:107: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:111: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:112: Use of undeclared identifier 'strokeOutset' ERROR: 0:112: Use of undeclared identifier 'strokeOutset' ERROR: 0:112: Use of undeclared identifier 'strokeOutset' ERROR: 0:115: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:115: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:124: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:125: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:126: Use of undeclared identifier 'strokeOutset' ERROR: 0:128: Use of undeclared identifier 'edgeID' ERROR: 0:130: Use of undeclared identifier 'strokeOutset' ERROR: 0:134: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:134: Use of undeclared identifier 'isFinalEdge' ERROR: 0:152: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:154: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:157: Use of undeclared identifier 'maxParametricEdgeID' ERROR: 0:161: Use of undeclared identifier 'maxRotation0' ERROR: 0:162: Use of undeclared identifier 'maxRotation' ERROR: 0:162: Use of undeclared identifier 'maxRotation' ERROR: 0:163: Use of undeclared identifier 'maxRotation' ERROR: 0:169: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:172: Use of undeclared identifier 'lastRadialEdgeID' ERROR: 0:173: Use of undeclared identifier 'radialAngle' ERROR: 0:173: Use of undeclared identifier 'radialAngle' ERROR: 0:188: Use of undeclared identifier 'lastRadialEdgeID' ERROR: 0:206: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:207: Use of undeclared identifier 'combinedEdgeID' ERROR: 0:210: Use of undeclared identifier 'strokeOutset'Steps to reproduce
Unfortunately, I haven't been able to narrow down the crash yet, though I'll try to find time tomorrow to do so. But you can reproduce it on your own by cloning https://github.com/browserengineering/book and running:
You'll need a working Internet connection.
The text was updated successfully, but these errors were encountered: