rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2012 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
| 9 | #include "SkSweepGradient.h" |
| 10 | |
mtklein | cc695fe | 2014-12-10 10:29:19 -0800 | [diff] [blame] | 11 | static SkMatrix translate(SkScalar dx, SkScalar dy) { |
| 12 | SkMatrix matrix; |
| 13 | matrix.setTranslate(dx, dy); |
| 14 | return matrix; |
| 15 | } |
| 16 | |
reed | addf2ed | 2014-08-11 08:28:24 -0700 | [diff] [blame] | 17 | SkSweepGradient::SkSweepGradient(SkScalar cx, SkScalar cy, const Descriptor& desc) |
mtklein | cc695fe | 2014-12-10 10:29:19 -0800 | [diff] [blame] | 18 | : SkGradientShaderBase(desc, translate(-cx, -cy)) |
reed@google.com | 3d3a860 | 2013-05-24 14:58:44 +0000 | [diff] [blame] | 19 | , fCenter(SkPoint::Make(cx, cy)) |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 20 | { |
reed@google.com | 437d6eb | 2013-05-23 19:03:05 +0000 | [diff] [blame] | 21 | // overwrite the tilemode to a canonical value (since sweep ignores it) |
| 22 | fTileMode = SkShader::kClamp_TileMode; |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 23 | } |
| 24 | |
| 25 | SkShader::BitmapType SkSweepGradient::asABitmap(SkBitmap* bitmap, |
| 26 | SkMatrix* matrix, SkShader::TileMode* xy) const { |
| 27 | if (bitmap) { |
rileya@google.com | 1c6d64b | 2012-07-27 15:49:05 +0000 | [diff] [blame] | 28 | this->getGradientTableBitmap(bitmap); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 29 | } |
| 30 | if (matrix) { |
| 31 | *matrix = fPtsToUnit; |
| 32 | } |
| 33 | if (xy) { |
| 34 | xy[0] = fTileMode; |
| 35 | xy[1] = kClamp_TileMode; |
| 36 | } |
| 37 | return kSweep_BitmapType; |
| 38 | } |
| 39 | |
| 40 | SkShader::GradientType SkSweepGradient::asAGradient(GradientInfo* info) const { |
| 41 | if (info) { |
| 42 | commonAsAGradient(info); |
| 43 | info->fPoint[0] = fCenter; |
| 44 | } |
| 45 | return kSweep_GradientType; |
| 46 | } |
| 47 | |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 48 | SkFlattenable* SkSweepGradient::CreateProc(SkReadBuffer& buffer) { |
| 49 | DescriptorScope desc; |
| 50 | if (!desc.unflatten(buffer)) { |
| 51 | return NULL; |
| 52 | } |
| 53 | const SkPoint center = buffer.readPoint(); |
| 54 | return SkGradientShader::CreateSweep(center.x(), center.y(), desc.fColors, desc.fPos, |
| 55 | desc.fCount, desc.fGradFlags, desc.fLocalMatrix); |
| 56 | } |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 57 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 58 | void SkSweepGradient::flatten(SkWriteBuffer& buffer) const { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 59 | this->INHERITED::flatten(buffer); |
| 60 | buffer.writePoint(fCenter); |
| 61 | } |
| 62 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 63 | size_t SkSweepGradient::contextSize() const { |
| 64 | return sizeof(SweepGradientContext); |
| 65 | } |
| 66 | |
commit-bot@chromium.org | ce56d96 | 2014-05-05 18:39:18 +0000 | [diff] [blame] | 67 | SkShader::Context* SkSweepGradient::onCreateContext(const ContextRec& rec, void* storage) const { |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame] | 68 | return SkNEW_PLACEMENT_ARGS(storage, SweepGradientContext, (*this, rec)); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | SkSweepGradient::SweepGradientContext::SweepGradientContext( |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame] | 72 | const SkSweepGradient& shader, const ContextRec& rec) |
| 73 | : INHERITED(shader, rec) {} |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 74 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 75 | // returns angle in a circle [0..2PI) -> [0..255] |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 76 | static unsigned SkATan2_255(float y, float x) { |
| 77 | // static const float g255Over2PI = 255 / (2 * SK_ScalarPI); |
| 78 | static const float g255Over2PI = 40.584510488433314f; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 79 | |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 80 | float result = sk_float_atan2(y, x); |
| 81 | if (result < 0) { |
| 82 | result += 2 * SK_ScalarPI; |
| 83 | } |
| 84 | SkASSERT(result >= 0); |
| 85 | // since our value is always >= 0, we can cast to int, which is faster than |
| 86 | // calling floorf() |
| 87 | int ir = (int)(result * g255Over2PI); |
| 88 | SkASSERT(ir >= 0 && ir <= 255); |
| 89 | return ir; |
| 90 | } |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 91 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 92 | void SkSweepGradient::SweepGradientContext::shadeSpan(int x, int y, SkPMColor* SK_RESTRICT dstC, |
| 93 | int count) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 94 | SkMatrix::MapXYProc proc = fDstToIndexProc; |
| 95 | const SkMatrix& matrix = fDstToIndex; |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 96 | const SkPMColor* SK_RESTRICT cache = fCache->getCache32(); |
reed@google.com | 6004029 | 2013-02-04 18:21:23 +0000 | [diff] [blame] | 97 | int toggle = init_dither_toggle(x, y); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 98 | SkPoint srcPt; |
| 99 | |
| 100 | if (fDstToIndexClass != kPerspective_MatrixClass) { |
| 101 | proc(matrix, SkIntToScalar(x) + SK_ScalarHalf, |
| 102 | SkIntToScalar(y) + SK_ScalarHalf, &srcPt); |
| 103 | SkScalar dx, fx = srcPt.fX; |
| 104 | SkScalar dy, fy = srcPt.fY; |
| 105 | |
| 106 | if (fDstToIndexClass == kFixedStepInX_MatrixClass) { |
| 107 | SkFixed storage[2]; |
| 108 | (void)matrix.fixedStepInX(SkIntToScalar(y) + SK_ScalarHalf, |
| 109 | &storage[0], &storage[1]); |
| 110 | dx = SkFixedToScalar(storage[0]); |
| 111 | dy = SkFixedToScalar(storage[1]); |
| 112 | } else { |
| 113 | SkASSERT(fDstToIndexClass == kLinear_MatrixClass); |
| 114 | dx = matrix.getScaleX(); |
| 115 | dy = matrix.getSkewY(); |
| 116 | } |
| 117 | |
| 118 | for (; count > 0; --count) { |
reed@google.com | 6004029 | 2013-02-04 18:21:23 +0000 | [diff] [blame] | 119 | *dstC++ = cache[toggle + SkATan2_255(fy, fx)]; |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 120 | fx += dx; |
| 121 | fy += dy; |
reed@google.com | 6004029 | 2013-02-04 18:21:23 +0000 | [diff] [blame] | 122 | toggle = next_dither_toggle(toggle); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 123 | } |
| 124 | } else { // perspective case |
| 125 | for (int stop = x + count; x < stop; x++) { |
| 126 | proc(matrix, SkIntToScalar(x) + SK_ScalarHalf, |
| 127 | SkIntToScalar(y) + SK_ScalarHalf, &srcPt); |
reed@google.com | 6004029 | 2013-02-04 18:21:23 +0000 | [diff] [blame] | 128 | *dstC++ = cache[toggle + SkATan2_255(srcPt.fY, srcPt.fX)]; |
reed@google.com | 6004029 | 2013-02-04 18:21:23 +0000 | [diff] [blame] | 129 | toggle = next_dither_toggle(toggle); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 130 | } |
| 131 | } |
| 132 | } |
| 133 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 134 | void SkSweepGradient::SweepGradientContext::shadeSpan16(int x, int y, uint16_t* SK_RESTRICT dstC, |
| 135 | int count) { |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 136 | SkMatrix::MapXYProc proc = fDstToIndexProc; |
| 137 | const SkMatrix& matrix = fDstToIndex; |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 138 | const uint16_t* SK_RESTRICT cache = fCache->getCache16(); |
reed@google.com | 55853db | 2013-02-01 19:34:59 +0000 | [diff] [blame] | 139 | int toggle = init_dither_toggle16(x, y); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 140 | SkPoint srcPt; |
| 141 | |
| 142 | if (fDstToIndexClass != kPerspective_MatrixClass) { |
| 143 | proc(matrix, SkIntToScalar(x) + SK_ScalarHalf, |
| 144 | SkIntToScalar(y) + SK_ScalarHalf, &srcPt); |
| 145 | SkScalar dx, fx = srcPt.fX; |
| 146 | SkScalar dy, fy = srcPt.fY; |
| 147 | |
| 148 | if (fDstToIndexClass == kFixedStepInX_MatrixClass) { |
| 149 | SkFixed storage[2]; |
| 150 | (void)matrix.fixedStepInX(SkIntToScalar(y) + SK_ScalarHalf, |
| 151 | &storage[0], &storage[1]); |
| 152 | dx = SkFixedToScalar(storage[0]); |
| 153 | dy = SkFixedToScalar(storage[1]); |
| 154 | } else { |
| 155 | SkASSERT(fDstToIndexClass == kLinear_MatrixClass); |
| 156 | dx = matrix.getScaleX(); |
| 157 | dy = matrix.getSkewY(); |
| 158 | } |
| 159 | |
| 160 | for (; count > 0; --count) { |
| 161 | int index = SkATan2_255(fy, fx) >> (8 - kCache16Bits); |
| 162 | *dstC++ = cache[toggle + index]; |
reed@google.com | 55853db | 2013-02-01 19:34:59 +0000 | [diff] [blame] | 163 | toggle = next_dither_toggle16(toggle); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 164 | fx += dx; |
| 165 | fy += dy; |
| 166 | } |
| 167 | } else { // perspective case |
| 168 | for (int stop = x + count; x < stop; x++) { |
| 169 | proc(matrix, SkIntToScalar(x) + SK_ScalarHalf, |
| 170 | SkIntToScalar(y) + SK_ScalarHalf, &srcPt); |
| 171 | |
| 172 | int index = SkATan2_255(srcPt.fY, srcPt.fX); |
| 173 | index >>= (8 - kCache16Bits); |
| 174 | *dstC++ = cache[toggle + index]; |
reed@google.com | 55853db | 2013-02-01 19:34:59 +0000 | [diff] [blame] | 175 | toggle = next_dither_toggle16(toggle); |
rileya@google.com | 589708b | 2012-07-26 20:04:23 +0000 | [diff] [blame] | 176 | } |
| 177 | } |
| 178 | } |
| 179 | |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 180 | ///////////////////////////////////////////////////////////////////// |
| 181 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 182 | #if SK_SUPPORT_GPU |
| 183 | |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 184 | #include "SkGr.h" |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 185 | #include "gl/builders/GrGLProgramBuilder.h" |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 186 | |
bsalomon@google.com | 0707c29 | 2012-10-25 21:45:42 +0000 | [diff] [blame] | 187 | class GrGLSweepGradient : public GrGLGradientEffect { |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 188 | public: |
| 189 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 190 | GrGLSweepGradient(const GrProcessor&) {} |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 191 | virtual ~GrGLSweepGradient() { } |
| 192 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame^] | 193 | virtual void emitCode(EmitArgs&) override; |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 194 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 195 | static void GenKey(const GrProcessor& processor, const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 196 | b->add32(GenBaseGradientKey(processor)); |
bsalomon@google.com | d8b5fac | 2012-11-01 17:02:46 +0000 | [diff] [blame] | 197 | } |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 198 | |
| 199 | private: |
| 200 | |
bsalomon@google.com | 0707c29 | 2012-10-25 21:45:42 +0000 | [diff] [blame] | 201 | typedef GrGLGradientEffect INHERITED; |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 202 | |
| 203 | }; |
| 204 | |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 205 | ///////////////////////////////////////////////////////////////////// |
| 206 | |
| 207 | class GrSweepGradient : public GrGradientEffect { |
| 208 | public: |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 209 | static GrFragmentProcessor* Create(GrContext* ctx, GrProcessorDataManager* procDataManager, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 210 | const SkSweepGradient& shader, const SkMatrix& m) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 211 | return SkNEW_ARGS(GrSweepGradient, (ctx, procDataManager, shader, m)); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 212 | } |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 213 | virtual ~GrSweepGradient() { } |
| 214 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 215 | const char* name() const override { return "Sweep Gradient"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 216 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 217 | virtual void getGLProcessorKey(const GrGLSLCaps& caps, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 218 | GrProcessorKeyBuilder* b) const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 219 | GrGLSweepGradient::GenKey(*this, caps, b); |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 220 | } |
| 221 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 222 | GrGLFragmentProcessor* createGLInstance() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 223 | return SkNEW_ARGS(GrGLSweepGradient, (*this)); |
| 224 | } |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 225 | |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 226 | private: |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 227 | GrSweepGradient(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 228 | GrProcessorDataManager* procDataManager, |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 229 | const SkSweepGradient& shader, |
| 230 | const SkMatrix& matrix) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 231 | : INHERITED(ctx, procDataManager, shader, matrix, SkShader::kClamp_TileMode) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 232 | this->initClassID<GrSweepGradient>(); |
| 233 | } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 234 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
rileya@google.com | 98e8b6d | 2012-07-31 20:38:06 +0000 | [diff] [blame] | 235 | |
| 236 | typedef GrGradientEffect INHERITED; |
| 237 | }; |
| 238 | |
| 239 | ///////////////////////////////////////////////////////////////////// |
| 240 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 241 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrSweepGradient); |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 242 | |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 243 | GrFragmentProcessor* GrSweepGradient::TestCreate(GrProcessorTestData* d) { |
| 244 | SkPoint center = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 245 | |
| 246 | SkColor colors[kMaxRandomGradientColors]; |
| 247 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 248 | SkScalar* stops = stopsArray; |
| 249 | SkShader::TileMode tmIgnored; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 250 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tmIgnored); |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 251 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateSweep(center.fX, center.fY, |
| 252 | colors, stops, colorCount)); |
bsalomon@google.com | e197cbf | 2013-01-14 16:46:26 +0000 | [diff] [blame] | 253 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 254 | GrFragmentProcessor* fp; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 255 | GrColor paintColor; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 256 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 257 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 258 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 259 | return fp; |
bsalomon@google.com | d472620 | 2012-08-03 14:34:46 +0000 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | ///////////////////////////////////////////////////////////////////// |
| 263 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame^] | 264 | void GrGLSweepGradient::emitCode(EmitArgs& args) { |
| 265 | const GrSweepGradient& ge = args.fFp.cast<GrSweepGradient>(); |
| 266 | this->emitUniforms(args.fBuilder, ge); |
| 267 | SkString coords2D = args.fBuilder->getFragmentShaderBuilder() |
| 268 | ->ensureFSCoords2D(args.fCoords, 0); |
| 269 | const GrGLContextInfo& ctxInfo = args.fBuilder->ctxInfo(); |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 270 | SkString t; |
commit-bot@chromium.org | 54318d3 | 2014-02-14 17:27:04 +0000 | [diff] [blame] | 271 | // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi] |
| 272 | // On Intel GPU there is an issue where it reads the second arguement to atan "- %s.x" as an int |
| 273 | // thus must us -1.0 * %s.x to work correctly |
| 274 | if (kIntel_GrGLVendor != ctxInfo.vendor()){ |
| 275 | t.printf("atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5", |
| 276 | coords2D.c_str(), coords2D.c_str()); |
| 277 | } else { |
| 278 | t.printf("atan(- %s.y, -1.0 * %s.x) * 0.1591549430918 + 0.5", |
| 279 | coords2D.c_str(), coords2D.c_str()); |
| 280 | } |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame^] | 281 | this->emitColor(args.fBuilder, ge, t.c_str(), args.fOutputColor, args.fInputColor, |
| 282 | args.fSamplers); |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | ///////////////////////////////////////////////////////////////////// |
| 286 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 287 | bool SkSweepGradient::asFragmentProcessor(GrContext* context, const SkPaint& paint, |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 288 | const SkMatrix& viewM, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 289 | const SkMatrix* localMatrix, GrColor* paintColor, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 290 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 291 | GrFragmentProcessor** effect) const { |
mtklein | 3f3b3d0 | 2014-12-01 11:47:08 -0800 | [diff] [blame] | 292 | |
bsalomon@google.com | dfdb7e5 | 2012-10-16 15:19:45 +0000 | [diff] [blame] | 293 | SkMatrix matrix; |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 294 | if (!this->getLocalMatrix().invert(&matrix)) { |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 295 | return false; |
bsalomon@google.com | dfdb7e5 | 2012-10-16 15:19:45 +0000 | [diff] [blame] | 296 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 297 | if (localMatrix) { |
| 298 | SkMatrix inv; |
| 299 | if (!localMatrix->invert(&inv)) { |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 300 | return false; |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 301 | } |
| 302 | matrix.postConcat(inv); |
| 303 | } |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 304 | matrix.postConcat(fPtsToUnit); |
mtklein | 3f3b3d0 | 2014-12-01 11:47:08 -0800 | [diff] [blame] | 305 | |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 306 | *effect = GrSweepGradient::Create(context, procDataManager, *this, matrix); |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 307 | *paintColor = SkColor2GrColorJustAlpha(paint.getColor()); |
mtklein | 3f3b3d0 | 2014-12-01 11:47:08 -0800 | [diff] [blame] | 308 | |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 309 | return true; |
rileya@google.com | d7cc651 | 2012-07-27 14:00:39 +0000 | [diff] [blame] | 310 | } |
| 311 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 312 | #else |
| 313 | |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 314 | bool SkSweepGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix&, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 315 | const SkMatrix*, GrColor*, GrProcessorDataManager*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 316 | GrFragmentProcessor**) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 317 | SkDEBUGFAIL("Should not call in GPU-less build"); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 318 | return false; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 319 | } |
| 320 | |
| 321 | #endif |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 322 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 323 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 324 | void SkSweepGradient::toString(SkString* str) const { |
| 325 | str->append("SkSweepGradient: ("); |
| 326 | |
| 327 | str->append("center: ("); |
| 328 | str->appendScalar(fCenter.fX); |
| 329 | str->append(", "); |
| 330 | str->appendScalar(fCenter.fY); |
| 331 | str->append(") "); |
| 332 | |
| 333 | this->INHERITED::toString(str); |
| 334 | |
| 335 | str->append(")"); |
| 336 | } |
| 337 | #endif |