rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkRadialGradient.h" |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 9 | #include "SkNx.h" |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 10 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 11 | namespace { |
| 12 | |
commit-bot@chromium.org | 34150b4 | 2013-10-16 18:59:44 +0000 | [diff] [blame] | 13 | // GCC doesn't like using static functions as template arguments. So force these to be non-static. |
| 14 | inline SkFixed mirror_tileproc_nonstatic(SkFixed x) { |
| 15 | return mirror_tileproc(x); |
| 16 | } |
| 17 | |
| 18 | inline SkFixed repeat_tileproc_nonstatic(SkFixed x) { |
| 19 | return repeat_tileproc(x); |
| 20 | } |
| 21 | |
mtklein | cc695fe | 2014-12-10 10:29:19 -0800 | [diff] [blame] | 22 | SkMatrix rad_to_unit_matrix(const SkPoint& center, SkScalar radius) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 23 | SkScalar inv = SkScalarInvert(radius); |
| 24 | |
mtklein | cc695fe | 2014-12-10 10:29:19 -0800 | [diff] [blame] | 25 | SkMatrix matrix; |
| 26 | matrix.setTranslate(-center.fX, -center.fY); |
| 27 | matrix.postScale(inv, inv); |
| 28 | return matrix; |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 29 | } |
| 30 | |
commit-bot@chromium.org | 34150b4 | 2013-10-16 18:59:44 +0000 | [diff] [blame] | 31 | |
| 32 | } // namespace |
| 33 | |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 34 | ///////////////////////////////////////////////////////////////////// |
| 35 | |
reed | addf2ed | 2014-08-11 08:28:24 -0700 | [diff] [blame] | 36 | SkRadialGradient::SkRadialGradient(const SkPoint& center, SkScalar radius, const Descriptor& desc) |
mtklein | cc695fe | 2014-12-10 10:29:19 -0800 | [diff] [blame] | 37 | : SkGradientShaderBase(desc, rad_to_unit_matrix(center, radius)) |
reed | addf2ed | 2014-08-11 08:28:24 -0700 | [diff] [blame] | 38 | , fCenter(center) |
mtklein | cc695fe | 2014-12-10 10:29:19 -0800 | [diff] [blame] | 39 | , fRadius(radius) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 40 | } |
| 41 | |
reed | 773ceda | 2016-03-03 18:18:25 -0800 | [diff] [blame] | 42 | size_t SkRadialGradient::onContextSize(const ContextRec&) const { |
reed | a0cee5f | 2016-03-04 07:38:11 -0800 | [diff] [blame] | 43 | return sizeof(RadialGradientContext); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 44 | } |
| 45 | |
commit-bot@chromium.org | ce56d96 | 2014-05-05 18:39:18 +0000 | [diff] [blame] | 46 | SkShader::Context* SkRadialGradient::onCreateContext(const ContextRec& rec, void* storage) const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 47 | return new (storage) RadialGradientContext(*this, rec); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 48 | } |
| 49 | |
| 50 | SkRadialGradient::RadialGradientContext::RadialGradientContext( |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame] | 51 | const SkRadialGradient& shader, const ContextRec& rec) |
| 52 | : INHERITED(shader, rec) {} |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 53 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 54 | SkShader::GradientType SkRadialGradient::asAGradient(GradientInfo* info) const { |
| 55 | if (info) { |
| 56 | commonAsAGradient(info); |
| 57 | info->fPoint[0] = fCenter; |
| 58 | info->fRadius[0] = fRadius; |
| 59 | } |
| 60 | return kRadial_GradientType; |
| 61 | } |
| 62 | |
reed | 60c9b58 | 2016-04-03 09:11:13 -0700 | [diff] [blame] | 63 | sk_sp<SkFlattenable> SkRadialGradient::CreateProc(SkReadBuffer& buffer) { |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 64 | DescriptorScope desc; |
| 65 | if (!desc.unflatten(buffer)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 66 | return nullptr; |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 67 | } |
| 68 | const SkPoint center = buffer.readPoint(); |
| 69 | const SkScalar radius = buffer.readScalar(); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 70 | return SkGradientShader::MakeRadial(center, radius, desc.fColors, desc.fPos, desc.fCount, |
reed | 60c9b58 | 2016-04-03 09:11:13 -0700 | [diff] [blame] | 71 | desc.fTileMode, desc.fGradFlags, desc.fLocalMatrix); |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 72 | } |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 73 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 74 | void SkRadialGradient::flatten(SkWriteBuffer& buffer) const { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 75 | this->INHERITED::flatten(buffer); |
| 76 | buffer.writePoint(fCenter); |
| 77 | buffer.writeScalar(fRadius); |
| 78 | } |
| 79 | |
| 80 | namespace { |
| 81 | |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 82 | inline bool radial_completely_pinned(SkScalar fx, SkScalar dx, SkScalar fy, SkScalar dy) { |
| 83 | // fast, overly-conservative test: checks unit square instead of unit circle |
| 84 | bool xClamped = (fx >= 1 && dx >= 0) || (fx <= -1 && dx <= 0); |
| 85 | bool yClamped = (fy >= 1 && dy >= 0) || (fy <= -1 && dy <= 0); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 86 | return xClamped || yClamped; |
| 87 | } |
| 88 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 89 | typedef void (* RadialShadeProc)(SkScalar sfx, SkScalar sdx, |
| 90 | SkScalar sfy, SkScalar sdy, |
| 91 | SkPMColor* dstC, const SkPMColor* cache, |
| 92 | int count, int toggle); |
| 93 | |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 94 | static inline Sk4f fast_sqrt(const Sk4f& R) { |
mtklein | f8f90e4 | 2016-03-21 10:04:46 -0700 | [diff] [blame] | 95 | return R * R.rsqrt(); |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | static inline Sk4f sum_squares(const Sk4f& a, const Sk4f& b) { |
| 99 | return a * a + b * b; |
| 100 | } |
| 101 | |
| 102 | void shadeSpan_radial_clamp2(SkScalar sfx, SkScalar sdx, SkScalar sfy, SkScalar sdy, |
| 103 | SkPMColor* SK_RESTRICT dstC, const SkPMColor* SK_RESTRICT cache, |
| 104 | int count, int toggle) { |
| 105 | if (radial_completely_pinned(sfx, sdx, sfy, sdy)) { |
| 106 | unsigned fi = SkGradientShaderBase::kCache32Count - 1; |
| 107 | sk_memset32_dither(dstC, |
| 108 | cache[toggle + fi], |
| 109 | cache[next_dither_toggle(toggle) + fi], |
| 110 | count); |
| 111 | } else { |
fmalita | 0032a30 | 2016-03-04 06:29:35 -0800 | [diff] [blame] | 112 | const Sk4f min(SK_ScalarNearlyZero); |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 113 | const Sk4f max(255); |
| 114 | const float scale = 255; |
| 115 | sfx *= scale; |
| 116 | sfy *= scale; |
| 117 | sdx *= scale; |
| 118 | sdy *= scale; |
| 119 | const Sk4f fx4(sfx, sfx + sdx, sfx + 2*sdx, sfx + 3*sdx); |
| 120 | const Sk4f fy4(sfy, sfy + sdy, sfy + 2*sdy, sfy + 3*sdy); |
| 121 | const Sk4f dx4(sdx * 4); |
| 122 | const Sk4f dy4(sdy * 4); |
| 123 | |
| 124 | Sk4f tmpxy = fx4 * dx4 + fy4 * dy4; |
| 125 | Sk4f tmpdxdy = sum_squares(dx4, dy4); |
fmalita | 0032a30 | 2016-03-04 06:29:35 -0800 | [diff] [blame] | 126 | Sk4f R = Sk4f::Max(sum_squares(fx4, fy4), min); |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 127 | Sk4f dR = tmpxy + tmpxy + tmpdxdy; |
| 128 | const Sk4f ddR = tmpdxdy + tmpdxdy; |
| 129 | |
| 130 | for (int i = 0; i < (count >> 2); ++i) { |
| 131 | Sk4f dist = Sk4f::Min(fast_sqrt(R), max); |
fmalita | 0032a30 | 2016-03-04 06:29:35 -0800 | [diff] [blame] | 132 | R = Sk4f::Max(R + dR, min); |
mtklein | f2fe0e0 | 2015-06-10 08:57:28 -0700 | [diff] [blame] | 133 | dR = dR + ddR; |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 134 | |
mtklein | 6f79709 | 2015-11-09 08:33:53 -0800 | [diff] [blame] | 135 | uint8_t fi[4]; |
mtklein | 6f37b4a | 2015-12-14 11:25:18 -0800 | [diff] [blame] | 136 | SkNx_cast<uint8_t>(dist).store(fi); |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 137 | |
| 138 | for (int i = 0; i < 4; i++) { |
| 139 | *dstC++ = cache[toggle + fi[i]]; |
| 140 | toggle = next_dither_toggle(toggle); |
| 141 | } |
| 142 | } |
| 143 | count &= 3; |
| 144 | if (count) { |
| 145 | Sk4f dist = Sk4f::Min(fast_sqrt(R), max); |
| 146 | |
mtklein | 6f79709 | 2015-11-09 08:33:53 -0800 | [diff] [blame] | 147 | uint8_t fi[4]; |
mtklein | 6f37b4a | 2015-12-14 11:25:18 -0800 | [diff] [blame] | 148 | SkNx_cast<uint8_t>(dist).store(fi); |
mtklein | 1113da7 | 2015-04-27 12:08:01 -0700 | [diff] [blame] | 149 | for (int i = 0; i < count; i++) { |
| 150 | *dstC++ = cache[toggle + fi[i]]; |
| 151 | toggle = next_dither_toggle(toggle); |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 157 | // Unrolling this loop doesn't seem to help (when float); we're stalling to |
| 158 | // get the results of the sqrt (?), and don't have enough extra registers to |
| 159 | // have many in flight. |
commit-bot@chromium.org | 34150b4 | 2013-10-16 18:59:44 +0000 | [diff] [blame] | 160 | template <SkFixed (*TileProc)(SkFixed)> |
| 161 | void shadeSpan_radial(SkScalar fx, SkScalar dx, SkScalar fy, SkScalar dy, |
| 162 | SkPMColor* SK_RESTRICT dstC, const SkPMColor* SK_RESTRICT cache, |
| 163 | int count, int toggle) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 164 | do { |
commit-bot@chromium.org | 34150b4 | 2013-10-16 18:59:44 +0000 | [diff] [blame] | 165 | const SkFixed dist = SkFloatToFixed(sk_float_sqrt(fx*fx + fy*fy)); |
| 166 | const unsigned fi = TileProc(dist); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 167 | SkASSERT(fi <= 0xFFFF); |
| 168 | *dstC++ = cache[toggle + (fi >> SkGradientShaderBase::kCache32Shift)]; |
reed@google.com | 55853db | 2013-02-01 19:34:59 +0000 | [diff] [blame] | 169 | toggle = next_dither_toggle(toggle); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 170 | fx += dx; |
| 171 | fy += dy; |
| 172 | } while (--count != 0); |
| 173 | } |
commit-bot@chromium.org | 34150b4 | 2013-10-16 18:59:44 +0000 | [diff] [blame] | 174 | |
| 175 | void shadeSpan_radial_mirror(SkScalar fx, SkScalar dx, SkScalar fy, SkScalar dy, |
| 176 | SkPMColor* SK_RESTRICT dstC, const SkPMColor* SK_RESTRICT cache, |
| 177 | int count, int toggle) { |
| 178 | shadeSpan_radial<mirror_tileproc_nonstatic>(fx, dx, fy, dy, dstC, cache, count, toggle); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 179 | } |
| 180 | |
commit-bot@chromium.org | 34150b4 | 2013-10-16 18:59:44 +0000 | [diff] [blame] | 181 | void shadeSpan_radial_repeat(SkScalar fx, SkScalar dx, SkScalar fy, SkScalar dy, |
| 182 | SkPMColor* SK_RESTRICT dstC, const SkPMColor* SK_RESTRICT cache, |
| 183 | int count, int toggle) { |
| 184 | shadeSpan_radial<repeat_tileproc_nonstatic>(fx, dx, fy, dy, dstC, cache, count, toggle); |
| 185 | } |
| 186 | |
| 187 | } // namespace |
| 188 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 189 | void SkRadialGradient::RadialGradientContext::shadeSpan(int x, int y, |
| 190 | SkPMColor* SK_RESTRICT dstC, int count) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 191 | SkASSERT(count > 0); |
| 192 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 193 | const SkRadialGradient& radialGradient = static_cast<const SkRadialGradient&>(fShader); |
| 194 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 195 | SkPoint srcPt; |
| 196 | SkMatrix::MapXYProc dstProc = fDstToIndexProc; |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 197 | TileProc proc = radialGradient.fTileProc; |
| 198 | const SkPMColor* SK_RESTRICT cache = fCache->getCache32(); |
reed@google.com | 55853db | 2013-02-01 19:34:59 +0000 | [diff] [blame] | 199 | int toggle = init_dither_toggle(x, y); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 200 | |
| 201 | if (fDstToIndexClass != kPerspective_MatrixClass) { |
| 202 | dstProc(fDstToIndex, SkIntToScalar(x) + SK_ScalarHalf, |
| 203 | SkIntToScalar(y) + SK_ScalarHalf, &srcPt); |
| 204 | SkScalar sdx = fDstToIndex.getScaleX(); |
| 205 | SkScalar sdy = fDstToIndex.getSkewY(); |
| 206 | |
| 207 | if (fDstToIndexClass == kFixedStepInX_MatrixClass) { |
benjaminwagner | 8e17556 | 2016-02-16 10:09:40 -0800 | [diff] [blame] | 208 | const auto step = fDstToIndex.fixedStepInX(SkIntToScalar(y)); |
| 209 | sdx = step.fX; |
| 210 | sdy = step.fY; |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 211 | } else { |
| 212 | SkASSERT(fDstToIndexClass == kLinear_MatrixClass); |
| 213 | } |
| 214 | |
| 215 | RadialShadeProc shadeProc = shadeSpan_radial_repeat; |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 216 | if (SkShader::kClamp_TileMode == radialGradient.fTileMode) { |
reed | 67383fc | 2015-05-05 07:55:19 -0700 | [diff] [blame] | 217 | shadeProc = shadeSpan_radial_clamp2; |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 218 | } else if (SkShader::kMirror_TileMode == radialGradient.fTileMode) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 219 | shadeProc = shadeSpan_radial_mirror; |
| 220 | } else { |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 221 | SkASSERT(SkShader::kRepeat_TileMode == radialGradient.fTileMode); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 222 | } |
| 223 | (*shadeProc)(srcPt.fX, sdx, srcPt.fY, sdy, dstC, cache, count, toggle); |
| 224 | } else { // perspective case |
| 225 | SkScalar dstX = SkIntToScalar(x); |
| 226 | SkScalar dstY = SkIntToScalar(y); |
| 227 | do { |
| 228 | dstProc(fDstToIndex, dstX, dstY, &srcPt); |
| 229 | unsigned fi = proc(SkScalarToFixed(srcPt.length())); |
| 230 | SkASSERT(fi <= 0xFFFF); |
| 231 | *dstC++ = cache[fi >> SkGradientShaderBase::kCache32Shift]; |
| 232 | dstX += SK_Scalar1; |
| 233 | } while (--count != 0); |
| 234 | } |
| 235 | } |
| 236 | |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 237 | ///////////////////////////////////////////////////////////////////// |
| 238 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 239 | #if SK_SUPPORT_GPU |
| 240 | |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 241 | #include "SkGr.h" |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 242 | #include "glsl/GrGLSLCaps.h" |
| 243 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 244 | |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 245 | class GrRadialGradient : public GrGradientEffect { |
| 246 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame] | 247 | class GLSLRadialProcessor; |
| 248 | |
brianosman | 9557c27 | 2016-09-15 06:59:15 -0700 | [diff] [blame^] | 249 | static sk_sp<GrFragmentProcessor> Make(const CreateArgs& args) { |
| 250 | return sk_sp<GrFragmentProcessor>(new GrRadialGradient(args)); |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | virtual ~GrRadialGradient() { } |
| 254 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 255 | const char* name() const override { return "Radial Gradient"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 256 | |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 257 | private: |
brianosman | 9557c27 | 2016-09-15 06:59:15 -0700 | [diff] [blame^] | 258 | GrRadialGradient(const CreateArgs& args) |
| 259 | : INHERITED(args) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 260 | this->initClassID<GrRadialGradient>(); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 261 | } |
| 262 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame] | 263 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 264 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 265 | virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame] | 266 | GrProcessorKeyBuilder* b) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 267 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 268 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 269 | |
| 270 | typedef GrGradientEffect INHERITED; |
| 271 | }; |
| 272 | |
| 273 | ///////////////////////////////////////////////////////////////////// |
| 274 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame] | 275 | class GrRadialGradient::GLSLRadialProcessor : public GrGradientEffect::GLSLProcessor { |
| 276 | public: |
| 277 | GLSLRadialProcessor(const GrProcessor&) {} |
| 278 | virtual ~GLSLRadialProcessor() { } |
| 279 | |
| 280 | virtual void emitCode(EmitArgs&) override; |
| 281 | |
| 282 | static void GenKey(const GrProcessor& processor, const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
| 283 | b->add32(GenBaseGradientKey(processor)); |
| 284 | } |
| 285 | |
| 286 | private: |
| 287 | typedef GrGradientEffect::GLSLProcessor INHERITED; |
| 288 | |
| 289 | }; |
| 290 | |
| 291 | ///////////////////////////////////////////////////////////////////// |
| 292 | |
| 293 | GrGLSLFragmentProcessor* GrRadialGradient::onCreateGLSLInstance() const { |
| 294 | return new GrRadialGradient::GLSLRadialProcessor(*this); |
| 295 | } |
| 296 | |
| 297 | void GrRadialGradient::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 298 | GrProcessorKeyBuilder* b) const { |
| 299 | GrRadialGradient::GLSLRadialProcessor::GenKey(*this, caps, b); |
| 300 | } |
| 301 | |
| 302 | ///////////////////////////////////////////////////////////////////// |
| 303 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 304 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRadialGradient); |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 305 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 306 | sk_sp<GrFragmentProcessor> GrRadialGradient::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 307 | SkPoint center = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 308 | SkScalar radius = d->fRandom->nextUScalar1(); |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 309 | |
| 310 | SkColor colors[kMaxRandomGradientColors]; |
| 311 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 312 | SkScalar* stops = stopsArray; |
| 313 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 314 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 315 | auto shader = SkGradientShader::MakeRadial(center, radius, colors, stops, colorCount, tm); |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 316 | SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| 317 | sk_sp<GrFragmentProcessor> fp = shader->asFragmentProcessor(SkShader::AsFPArgs( |
brianosman | 1638c0d | 2016-07-25 05:12:53 -0700 | [diff] [blame] | 318 | d->fContext, &viewMatrix, NULL, kNone_SkFilterQuality, nullptr, |
| 319 | SkSourceGammaTreatment::kRespect)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 320 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 321 | return fp; |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | ///////////////////////////////////////////////////////////////////// |
| 325 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame] | 326 | void GrRadialGradient::GLSLRadialProcessor::emitCode(EmitArgs& args) { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 327 | const GrRadialGradient& ge = args.fFp.cast<GrRadialGradient>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 328 | this->emitUniforms(args.fUniformHandler, ge); |
bsalomon@google.com | d8b5fac | 2012-11-01 17:02:46 +0000 | [diff] [blame] | 329 | SkString t("length("); |
bsalomon | 1a1aa93 | 2016-09-12 09:30:36 -0700 | [diff] [blame] | 330 | t.append(args.fFragBuilder->ensureCoords2D(args.fTransformedCoords[0])); |
bsalomon@google.com | d8b5fac | 2012-11-01 17:02:46 +0000 | [diff] [blame] | 331 | t.append(")"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 332 | this->emitColor(args.fFragBuilder, |
| 333 | args.fUniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 334 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 335 | ge, t.c_str(), |
| 336 | args.fOutputColor, |
| 337 | args.fInputColor, |
cdalton | 3f6f76f | 2016-04-11 12:18:09 -0700 | [diff] [blame] | 338 | args.fTexSamplers); |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 339 | } |
| 340 | |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 341 | ///////////////////////////////////////////////////////////////////// |
| 342 | |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 343 | sk_sp<GrFragmentProcessor> SkRadialGradient::asFragmentProcessor(const AsFPArgs& args) const { |
| 344 | SkASSERT(args.fContext); |
mtklein | 3f3b3d0 | 2014-12-01 11:47:08 -0800 | [diff] [blame] | 345 | |
bsalomon@google.com | dfdb7e5 | 2012-10-16 15:19:45 +0000 | [diff] [blame] | 346 | SkMatrix matrix; |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 347 | if (!this->getLocalMatrix().invert(&matrix)) { |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 348 | return nullptr; |
bsalomon@google.com | dfdb7e5 | 2012-10-16 15:19:45 +0000 | [diff] [blame] | 349 | } |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 350 | if (args.fLocalMatrix) { |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 351 | SkMatrix inv; |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 352 | if (!args.fLocalMatrix->invert(&inv)) { |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 353 | return nullptr; |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 354 | } |
| 355 | matrix.postConcat(inv); |
| 356 | } |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 357 | matrix.postConcat(fPtsToUnit); |
brianosman | 9557c27 | 2016-09-15 06:59:15 -0700 | [diff] [blame^] | 358 | sk_sp<GrFragmentProcessor> inner(GrRadialGradient::Make( |
| 359 | GrGradientEffect::CreateArgs(args.fContext, this, &matrix, fTileMode))); |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 360 | return GrFragmentProcessor::MulOutputByInputAlpha(std::move(inner)); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | #endif |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 364 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 365 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 366 | void SkRadialGradient::toString(SkString* str) const { |
| 367 | str->append("SkRadialGradient: ("); |
skia.committer@gmail.com | ff21c2e | 2013-01-16 07:05:56 +0000 | [diff] [blame] | 368 | |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 369 | str->append("center: ("); |
| 370 | str->appendScalar(fCenter.fX); |
| 371 | str->append(", "); |
| 372 | str->appendScalar(fCenter.fY); |
| 373 | str->append(") radius: "); |
| 374 | str->appendScalar(fRadius); |
| 375 | str->append(" "); |
| 376 | |
| 377 | this->INHERITED::toString(str); |
| 378 | |
| 379 | str->append(")"); |
| 380 | } |
| 381 | #endif |