senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 The Android Open Source Project |
| 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 "SkLightingImageFilter.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkColorPriv.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 11 | #include "SkFlattenableBuffers.h" |
| 12 | #include "SkOrderedReadBuffer.h" |
| 13 | #include "SkOrderedWriteBuffer.h" |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 14 | #include "SkTypes.h" |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 15 | |
| 16 | #if SK_SUPPORT_GPU |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 17 | #include "effects/GrSingleTextureEffect.h" |
bsalomon@google.com | d698f77 | 2012-10-25 13:22:00 +0000 | [diff] [blame] | 18 | #include "gl/GrGLEffect.h" |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 19 | #include "gl/GrGLEffectMatrix.h" |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 20 | #include "GrEffect.h" |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 21 | #include "GrTBackendEffectFactory.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 22 | |
| 23 | class GrGLDiffuseLightingEffect; |
| 24 | class GrGLSpecularLightingEffect; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 25 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 26 | // For brevity |
| 27 | typedef GrGLUniformManager::UniformHandle UniformHandle; |
| 28 | static const UniformHandle kInvalidUniformHandle = GrGLUniformManager::kInvalidUniformHandle; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 29 | #endif |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 30 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 31 | namespace { |
| 32 | |
| 33 | const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3)); |
| 34 | const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3)); |
| 35 | const SkScalar gOneHalf = SkFloatToScalar(0.5f); |
| 36 | const SkScalar gOneQuarter = SkFloatToScalar(0.25f); |
| 37 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 38 | #if SK_SUPPORT_GPU |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 39 | void setUniformPoint3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
bsalomon@google.com | b9119a6 | 2012-07-25 17:55:26 +0000 | [diff] [blame] | 40 | GR_STATIC_ASSERT(sizeof(SkPoint3) == 3 * sizeof(GrGLfloat)); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 41 | uman.set3fv(uni, 0, 1, &point.fX); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 42 | } |
| 43 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 44 | void setUniformNormal3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 45 | setUniformPoint3(uman, uni, SkPoint3(point.fX, point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 46 | } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 47 | #endif |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 48 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 49 | // Shift matrix components to the left, as we advance pixels to the right. |
| 50 | inline void shiftMatrixLeft(int m[9]) { |
| 51 | m[0] = m[1]; |
| 52 | m[3] = m[4]; |
| 53 | m[6] = m[7]; |
| 54 | m[1] = m[2]; |
| 55 | m[4] = m[5]; |
| 56 | m[7] = m[8]; |
| 57 | } |
| 58 | |
| 59 | class DiffuseLightingType { |
| 60 | public: |
| 61 | DiffuseLightingType(SkScalar kd) |
| 62 | : fKD(kd) {} |
| 63 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 64 | SkScalar colorScale = SkScalarMul(fKD, normal.dot(surfaceTolight)); |
| 65 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 66 | SkPoint3 color(lightColor * colorScale); |
| 67 | return SkPackARGB32(255, |
| 68 | SkScalarFloorToInt(color.fX), |
| 69 | SkScalarFloorToInt(color.fY), |
| 70 | SkScalarFloorToInt(color.fZ)); |
| 71 | } |
| 72 | private: |
| 73 | SkScalar fKD; |
| 74 | }; |
| 75 | |
| 76 | class SpecularLightingType { |
| 77 | public: |
| 78 | SpecularLightingType(SkScalar ks, SkScalar shininess) |
| 79 | : fKS(ks), fShininess(shininess) {} |
| 80 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 81 | SkPoint3 halfDir(surfaceTolight); |
| 82 | halfDir.fZ += SK_Scalar1; // eye position is always (0, 0, 1) |
| 83 | halfDir.normalize(); |
| 84 | SkScalar colorScale = SkScalarMul(fKS, |
| 85 | SkScalarPow(normal.dot(halfDir), fShininess)); |
| 86 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 87 | SkPoint3 color(lightColor * colorScale); |
| 88 | return SkPackARGB32(SkScalarFloorToInt(color.maxComponent()), |
| 89 | SkScalarFloorToInt(color.fX), |
| 90 | SkScalarFloorToInt(color.fY), |
| 91 | SkScalarFloorToInt(color.fZ)); |
| 92 | } |
| 93 | private: |
| 94 | SkScalar fKS; |
| 95 | SkScalar fShininess; |
| 96 | }; |
| 97 | |
| 98 | inline SkScalar sobel(int a, int b, int c, int d, int e, int f, SkScalar scale) { |
| 99 | return SkScalarMul(SkIntToScalar(-a + b - 2 * c + 2 * d -e + f), scale); |
| 100 | } |
| 101 | |
| 102 | inline SkPoint3 pointToNormal(SkScalar x, SkScalar y, SkScalar surfaceScale) { |
| 103 | SkPoint3 vector(SkScalarMul(-x, surfaceScale), |
| 104 | SkScalarMul(-y, surfaceScale), |
| 105 | SK_Scalar1); |
| 106 | vector.normalize(); |
| 107 | return vector; |
| 108 | } |
| 109 | |
| 110 | inline SkPoint3 topLeftNormal(int m[9], SkScalar surfaceScale) { |
| 111 | return pointToNormal(sobel(0, 0, m[4], m[5], m[7], m[8], gTwoThirds), |
| 112 | sobel(0, 0, m[4], m[7], m[5], m[8], gTwoThirds), |
| 113 | surfaceScale); |
| 114 | } |
| 115 | |
| 116 | inline SkPoint3 topNormal(int m[9], SkScalar surfaceScale) { |
| 117 | return pointToNormal(sobel( 0, 0, m[3], m[5], m[6], m[8], gOneThird), |
| 118 | sobel(m[3], m[6], m[4], m[7], m[5], m[8], gOneHalf), |
| 119 | surfaceScale); |
| 120 | } |
| 121 | |
| 122 | inline SkPoint3 topRightNormal(int m[9], SkScalar surfaceScale) { |
| 123 | return pointToNormal(sobel( 0, 0, m[3], m[4], m[6], m[7], gTwoThirds), |
| 124 | sobel(m[3], m[6], m[4], m[7], 0, 0, gTwoThirds), |
| 125 | surfaceScale); |
| 126 | } |
| 127 | |
| 128 | inline SkPoint3 leftNormal(int m[9], SkScalar surfaceScale) { |
| 129 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], m[7], m[8], gOneHalf), |
| 130 | sobel( 0, 0, m[1], m[7], m[2], m[8], gOneThird), |
| 131 | surfaceScale); |
| 132 | } |
| 133 | |
| 134 | |
| 135 | inline SkPoint3 interiorNormal(int m[9], SkScalar surfaceScale) { |
| 136 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], gOneQuarter), |
| 137 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], gOneQuarter), |
| 138 | surfaceScale); |
| 139 | } |
| 140 | |
| 141 | inline SkPoint3 rightNormal(int m[9], SkScalar surfaceScale) { |
| 142 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], m[6], m[7], gOneHalf), |
| 143 | sobel(m[0], m[6], m[1], m[7], 0, 0, gOneThird), |
| 144 | surfaceScale); |
| 145 | } |
| 146 | |
| 147 | inline SkPoint3 bottomLeftNormal(int m[9], SkScalar surfaceScale) { |
| 148 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], 0, 0, gTwoThirds), |
| 149 | sobel( 0, 0, m[1], m[4], m[2], m[5], gTwoThirds), |
| 150 | surfaceScale); |
| 151 | } |
| 152 | |
| 153 | inline SkPoint3 bottomNormal(int m[9], SkScalar surfaceScale) { |
| 154 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], 0, 0, gOneThird), |
| 155 | sobel(m[0], m[3], m[1], m[4], m[2], m[5], gOneHalf), |
| 156 | surfaceScale); |
| 157 | } |
| 158 | |
| 159 | inline SkPoint3 bottomRightNormal(int m[9], SkScalar surfaceScale) { |
| 160 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], 0, 0, gTwoThirds), |
| 161 | sobel(m[0], m[3], m[1], m[4], 0, 0, gTwoThirds), |
| 162 | surfaceScale); |
| 163 | } |
| 164 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 165 | template <class LightingType, class LightType> void lightBitmap(const LightingType& lightingType, const SkLight* light, const SkBitmap& src, SkBitmap* dst, SkScalar surfaceScale) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 166 | const LightType* l = static_cast<const LightType*>(light); |
| 167 | int y = 0; |
| 168 | { |
| 169 | const SkPMColor* row1 = src.getAddr32(0, 0); |
| 170 | const SkPMColor* row2 = src.getAddr32(0, 1); |
| 171 | SkPMColor* dptr = dst->getAddr32(0, 0); |
| 172 | int m[9]; |
| 173 | int x = 0; |
| 174 | m[4] = SkGetPackedA32(*row1++); |
| 175 | m[5] = SkGetPackedA32(*row1++); |
| 176 | m[7] = SkGetPackedA32(*row2++); |
| 177 | m[8] = SkGetPackedA32(*row2++); |
| 178 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 179 | *dptr++ = lightingType.light(topLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 180 | for (x = 1; x < src.width() - 1; ++x) |
| 181 | { |
| 182 | shiftMatrixLeft(m); |
| 183 | m[5] = SkGetPackedA32(*row1++); |
| 184 | m[8] = SkGetPackedA32(*row2++); |
| 185 | surfaceToLight = l->surfaceToLight(x, 0, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 186 | *dptr++ = lightingType.light(topNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 187 | } |
| 188 | shiftMatrixLeft(m); |
| 189 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 190 | *dptr++ = lightingType.light(topRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | for (++y; y < src.height() - 1; ++y) { |
| 194 | const SkPMColor* row0 = src.getAddr32(0, y - 1); |
| 195 | const SkPMColor* row1 = src.getAddr32(0, y); |
| 196 | const SkPMColor* row2 = src.getAddr32(0, y + 1); |
| 197 | SkPMColor* dptr = dst->getAddr32(0, y); |
| 198 | int m[9]; |
| 199 | int x = 0; |
| 200 | m[1] = SkGetPackedA32(*row0++); |
| 201 | m[2] = SkGetPackedA32(*row0++); |
| 202 | m[4] = SkGetPackedA32(*row1++); |
| 203 | m[5] = SkGetPackedA32(*row1++); |
| 204 | m[7] = SkGetPackedA32(*row2++); |
| 205 | m[8] = SkGetPackedA32(*row2++); |
| 206 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 207 | *dptr++ = lightingType.light(leftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 208 | for (x = 1; x < src.width() - 1; ++x) { |
| 209 | shiftMatrixLeft(m); |
| 210 | m[2] = SkGetPackedA32(*row0++); |
| 211 | m[5] = SkGetPackedA32(*row1++); |
| 212 | m[8] = SkGetPackedA32(*row2++); |
| 213 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 214 | *dptr++ = lightingType.light(interiorNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 215 | } |
| 216 | shiftMatrixLeft(m); |
| 217 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 218 | *dptr++ = lightingType.light(rightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | { |
| 222 | const SkPMColor* row0 = src.getAddr32(0, src.height() - 2); |
| 223 | const SkPMColor* row1 = src.getAddr32(0, src.height() - 1); |
| 224 | int x = 0; |
| 225 | SkPMColor* dptr = dst->getAddr32(0, src.height() - 1); |
| 226 | int m[9]; |
| 227 | m[1] = SkGetPackedA32(*row0++); |
| 228 | m[2] = SkGetPackedA32(*row0++); |
| 229 | m[4] = SkGetPackedA32(*row1++); |
| 230 | m[5] = SkGetPackedA32(*row1++); |
| 231 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 232 | *dptr++ = lightingType.light(bottomLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 233 | for (x = 1; x < src.width() - 1; ++x) |
| 234 | { |
| 235 | shiftMatrixLeft(m); |
| 236 | m[2] = SkGetPackedA32(*row0++); |
| 237 | m[5] = SkGetPackedA32(*row1++); |
| 238 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 239 | *dptr++ = lightingType.light(bottomNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 240 | } |
| 241 | shiftMatrixLeft(m); |
| 242 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 243 | *dptr++ = lightingType.light(bottomRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 244 | } |
| 245 | } |
| 246 | |
| 247 | SkPoint3 readPoint3(SkFlattenableReadBuffer& buffer) { |
| 248 | SkPoint3 point; |
| 249 | point.fX = buffer.readScalar(); |
| 250 | point.fY = buffer.readScalar(); |
| 251 | point.fZ = buffer.readScalar(); |
| 252 | return point; |
| 253 | }; |
| 254 | |
| 255 | void writePoint3(const SkPoint3& point, SkFlattenableWriteBuffer& buffer) { |
| 256 | buffer.writeScalar(point.fX); |
| 257 | buffer.writeScalar(point.fY); |
| 258 | buffer.writeScalar(point.fZ); |
| 259 | }; |
| 260 | |
| 261 | class SkDiffuseLightingImageFilter : public SkLightingImageFilter { |
| 262 | public: |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 263 | SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, |
| 264 | SkScalar kd, SkImageFilter* input); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 265 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter) |
| 266 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 267 | virtual bool asNewEffect(GrEffectRef** effect, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 268 | SkScalar kd() const { return fKD; } |
| 269 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 270 | protected: |
| 271 | explicit SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 272 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 273 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 274 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 275 | |
| 276 | |
| 277 | private: |
| 278 | typedef SkLightingImageFilter INHERITED; |
| 279 | SkScalar fKD; |
| 280 | }; |
| 281 | |
| 282 | class SkSpecularLightingImageFilter : public SkLightingImageFilter { |
| 283 | public: |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 284 | SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess, SkImageFilter* input); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 285 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter) |
| 286 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 287 | virtual bool asNewEffect(GrEffectRef** effect, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 288 | SkScalar ks() const { return fKS; } |
| 289 | SkScalar shininess() const { return fShininess; } |
| 290 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 291 | protected: |
| 292 | explicit SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 293 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 294 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 295 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 296 | |
| 297 | private: |
| 298 | typedef SkLightingImageFilter INHERITED; |
| 299 | SkScalar fKS; |
| 300 | SkScalar fShininess; |
| 301 | }; |
| 302 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 303 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 304 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 305 | class GrLightingEffect : public GrSingleTextureEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 306 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 307 | GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 308 | virtual ~GrLightingEffect(); |
| 309 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 310 | const SkLight* light() const { return fLight; } |
| 311 | SkScalar surfaceScale() const { return fSurfaceScale; } |
bsalomon@google.com | 371e105 | 2013-01-11 21:08:55 +0000 | [diff] [blame] | 312 | |
| 313 | virtual void getConstantColorComponents(GrColor* color, |
| 314 | uint32_t* validFlags) const SK_OVERRIDE { |
| 315 | // lighting shaders are complicated. We just throw up our hands. |
| 316 | *validFlags = 0; |
| 317 | } |
| 318 | |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 319 | protected: |
bsalomon@google.com | 8a252f7 | 2013-01-22 20:35:13 +0000 | [diff] [blame] | 320 | virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 321 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 322 | private: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 323 | typedef GrSingleTextureEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 324 | const SkLight* fLight; |
| 325 | SkScalar fSurfaceScale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 326 | }; |
| 327 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 328 | class GrDiffuseLightingEffect : public GrLightingEffect { |
| 329 | public: |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 330 | static GrEffectRef* Create(GrTexture* texture, |
| 331 | const SkLight* light, |
| 332 | SkScalar surfaceScale, |
| 333 | SkScalar kd) { |
bsalomon@google.com | 6340a41 | 2013-01-22 19:55:59 +0000 | [diff] [blame] | 334 | AutoEffectUnref effect(SkNEW_ARGS(GrDiffuseLightingEffect, (texture, |
| 335 | light, |
| 336 | surfaceScale, |
| 337 | kd))); |
bsalomon@google.com | a1ebbe4 | 2013-01-16 15:51:47 +0000 | [diff] [blame] | 338 | return CreateEffectRef(effect); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 339 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 340 | |
| 341 | static const char* Name() { return "DiffuseLighting"; } |
| 342 | |
bsalomon@google.com | 422e81a | 2012-10-25 14:11:03 +0000 | [diff] [blame] | 343 | typedef GrGLDiffuseLightingEffect GLEffect; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 344 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 345 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 346 | SkScalar kd() const { return fKD; } |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 347 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 348 | private: |
bsalomon@google.com | 8a252f7 | 2013-01-22 20:35:13 +0000 | [diff] [blame] | 349 | virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 350 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 351 | GrDiffuseLightingEffect(GrTexture* texture, |
| 352 | const SkLight* light, |
| 353 | SkScalar surfaceScale, |
| 354 | SkScalar kd); |
| 355 | |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 356 | GR_DECLARE_EFFECT_TEST; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 357 | typedef GrLightingEffect INHERITED; |
| 358 | SkScalar fKD; |
| 359 | }; |
| 360 | |
| 361 | class GrSpecularLightingEffect : public GrLightingEffect { |
| 362 | public: |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 363 | static GrEffectRef* Create(GrTexture* texture, |
| 364 | const SkLight* light, |
| 365 | SkScalar surfaceScale, |
| 366 | SkScalar ks, |
| 367 | SkScalar shininess) { |
bsalomon@google.com | 6340a41 | 2013-01-22 19:55:59 +0000 | [diff] [blame] | 368 | AutoEffectUnref effect(SkNEW_ARGS(GrSpecularLightingEffect, (texture, |
| 369 | light, |
| 370 | surfaceScale, |
| 371 | ks, |
| 372 | shininess))); |
bsalomon@google.com | a1ebbe4 | 2013-01-16 15:51:47 +0000 | [diff] [blame] | 373 | return CreateEffectRef(effect); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 374 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 375 | static const char* Name() { return "SpecularLighting"; } |
| 376 | |
bsalomon@google.com | 422e81a | 2012-10-25 14:11:03 +0000 | [diff] [blame] | 377 | typedef GrGLSpecularLightingEffect GLEffect; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 378 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 379 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 380 | SkScalar ks() const { return fKS; } |
| 381 | SkScalar shininess() const { return fShininess; } |
| 382 | |
| 383 | private: |
bsalomon@google.com | 8a252f7 | 2013-01-22 20:35:13 +0000 | [diff] [blame] | 384 | virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 385 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 386 | GrSpecularLightingEffect(GrTexture* texture, |
| 387 | const SkLight* light, |
| 388 | SkScalar surfaceScale, |
| 389 | SkScalar ks, |
| 390 | SkScalar shininess); |
| 391 | |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 392 | GR_DECLARE_EFFECT_TEST; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 393 | typedef GrLightingEffect INHERITED; |
| 394 | SkScalar fKS; |
| 395 | SkScalar fShininess; |
| 396 | }; |
| 397 | |
| 398 | /////////////////////////////////////////////////////////////////////////////// |
| 399 | |
| 400 | class GrGLLight { |
| 401 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 402 | virtual ~GrGLLight() {} |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 403 | |
| 404 | /** |
| 405 | * This is called by GrGLLightingEffect::emitCode() before either of the two virtual functions |
| 406 | * below. It adds a vec3f uniform visible in the FS that represents the constant light color. |
| 407 | */ |
| 408 | void emitLightColorUniform(GrGLShaderBuilder*); |
| 409 | |
skia.committer@gmail.com | e862d16 | 2012-10-31 02:01:18 +0000 | [diff] [blame] | 410 | /** |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 411 | * These two functions are called from GrGLLightingEffect's emitCode() function. |
| 412 | * emitSurfaceToLight places an expression in param out that is the vector from the surface to |
| 413 | * the light. The expression will be used in the FS. emitLightColor writes an expression into |
| 414 | * the FS that is the color of the light. Either function may add functions and/or uniforms to |
| 415 | * the FS. The default of emitLightColor appends the name of the constant light color uniform |
| 416 | * and so this function only needs to be overridden if the light color varies spatially. |
| 417 | */ |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 418 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) = 0; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 419 | virtual void emitLightColor(GrGLShaderBuilder*, const char *surfaceToLight); |
| 420 | |
| 421 | // This is called from GrGLLightingEffect's setData(). Subclasses of GrGLLight must call |
| 422 | // INHERITED::setData(). |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 423 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 424 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 425 | protected: |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 426 | /** |
| 427 | * Gets the constant light color uniform. Subclasses can use this in their emitLightColor |
| 428 | * function. |
| 429 | */ |
| 430 | UniformHandle lightColorUni() const { return fColorUni; } |
| 431 | |
| 432 | private: |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 433 | UniformHandle fColorUni; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 434 | |
| 435 | typedef SkRefCnt INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 436 | }; |
| 437 | |
| 438 | /////////////////////////////////////////////////////////////////////////////// |
| 439 | |
| 440 | class GrGLDistantLight : public GrGLLight { |
| 441 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 442 | virtual ~GrGLDistantLight() {} |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 443 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 444 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 445 | private: |
| 446 | typedef GrGLLight INHERITED; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 447 | UniformHandle fDirectionUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 448 | }; |
| 449 | |
| 450 | /////////////////////////////////////////////////////////////////////////////// |
| 451 | |
| 452 | class GrGLPointLight : public GrGLLight { |
| 453 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 454 | virtual ~GrGLPointLight() {} |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 455 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 456 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 457 | private: |
| 458 | typedef GrGLLight INHERITED; |
| 459 | SkPoint3 fLocation; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 460 | UniformHandle fLocationUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 461 | }; |
| 462 | |
| 463 | /////////////////////////////////////////////////////////////////////////////// |
| 464 | |
| 465 | class GrGLSpotLight : public GrGLLight { |
| 466 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 467 | virtual ~GrGLSpotLight() {} |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 468 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 469 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) SK_OVERRIDE; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 470 | virtual void emitLightColor(GrGLShaderBuilder*, const char *surfaceToLight) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 471 | private: |
| 472 | typedef GrGLLight INHERITED; |
| 473 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 474 | SkString fLightColorFunc; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 475 | UniformHandle fLocationUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 476 | UniformHandle fExponentUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 477 | UniformHandle fCosOuterConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 478 | UniformHandle fCosInnerConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 479 | UniformHandle fConeScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 480 | UniformHandle fSUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 481 | }; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 482 | #else |
| 483 | |
| 484 | class GrGLLight; |
| 485 | |
| 486 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 487 | |
| 488 | }; |
| 489 | |
| 490 | /////////////////////////////////////////////////////////////////////////////// |
| 491 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 492 | class SkLight : public SkFlattenable { |
| 493 | public: |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 494 | SK_DECLARE_INST_COUNT(SkLight) |
| 495 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 496 | enum LightType { |
| 497 | kDistant_LightType, |
| 498 | kPoint_LightType, |
| 499 | kSpot_LightType, |
| 500 | }; |
| 501 | virtual LightType type() const = 0; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 502 | const SkPoint3& color() const { return fColor; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 503 | virtual GrGLLight* createGLLight() const = 0; |
| 504 | virtual bool isEqual(const SkLight& other) const { |
| 505 | return fColor == other.fColor; |
| 506 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 507 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 508 | protected: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 509 | SkLight(SkColor color) |
| 510 | : fColor(SkIntToScalar(SkColorGetR(color)), |
| 511 | SkIntToScalar(SkColorGetG(color)), |
| 512 | SkIntToScalar(SkColorGetB(color))) {} |
| 513 | SkLight(SkFlattenableReadBuffer& buffer) |
| 514 | : INHERITED(buffer) { |
| 515 | fColor = readPoint3(buffer); |
| 516 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 517 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 518 | INHERITED::flatten(buffer); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 519 | writePoint3(fColor, buffer); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 520 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 521 | |
| 522 | private: |
| 523 | typedef SkFlattenable INHERITED; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 524 | SkPoint3 fColor; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 525 | }; |
| 526 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 527 | SK_DEFINE_INST_COUNT(SkLight) |
| 528 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 529 | /////////////////////////////////////////////////////////////////////////////// |
| 530 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 531 | class SkDistantLight : public SkLight { |
| 532 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 533 | SkDistantLight(const SkPoint3& direction, SkColor color) |
| 534 | : INHERITED(color), fDirection(direction) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 535 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 536 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 537 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 538 | return fDirection; |
| 539 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 540 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 541 | virtual LightType type() const { return kDistant_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 542 | const SkPoint3& direction() const { return fDirection; } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 543 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
| 544 | #if SK_SUPPORT_GPU |
| 545 | return SkNEW(GrGLDistantLight); |
| 546 | #else |
| 547 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 548 | return NULL; |
| 549 | #endif |
| 550 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 551 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
| 552 | if (other.type() != kDistant_LightType) { |
| 553 | return false; |
| 554 | } |
| 555 | |
| 556 | const SkDistantLight& o = static_cast<const SkDistantLight&>(other); |
| 557 | return INHERITED::isEqual(other) && |
| 558 | fDirection == o.fDirection; |
| 559 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 560 | |
| 561 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight) |
| 562 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 563 | protected: |
| 564 | SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 565 | fDirection = readPoint3(buffer); |
| 566 | } |
| 567 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 568 | INHERITED::flatten(buffer); |
| 569 | writePoint3(fDirection, buffer); |
| 570 | } |
| 571 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 572 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 573 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 574 | SkPoint3 fDirection; |
| 575 | }; |
| 576 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 577 | /////////////////////////////////////////////////////////////////////////////// |
| 578 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 579 | class SkPointLight : public SkLight { |
| 580 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 581 | SkPointLight(const SkPoint3& location, SkColor color) |
| 582 | : INHERITED(color), fLocation(location) {} |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 583 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 584 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 585 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 586 | fLocation.fY - SkIntToScalar(y), |
| 587 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 588 | direction.normalize(); |
| 589 | return direction; |
| 590 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 591 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 592 | virtual LightType type() const { return kPoint_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 593 | const SkPoint3& location() const { return fLocation; } |
| 594 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 595 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 596 | return SkNEW(GrGLPointLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 597 | #else |
| 598 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 599 | return NULL; |
| 600 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 601 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 602 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 603 | if (other.type() != kPoint_LightType) { |
| 604 | return false; |
| 605 | } |
| 606 | const SkPointLight& o = static_cast<const SkPointLight&>(other); |
| 607 | return INHERITED::isEqual(other) && |
| 608 | fLocation == o.fLocation; |
| 609 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 610 | |
| 611 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight) |
| 612 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 613 | protected: |
| 614 | SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 615 | fLocation = readPoint3(buffer); |
| 616 | } |
| 617 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 618 | INHERITED::flatten(buffer); |
| 619 | writePoint3(fLocation, buffer); |
| 620 | } |
| 621 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 622 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 623 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 624 | SkPoint3 fLocation; |
| 625 | }; |
| 626 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 627 | /////////////////////////////////////////////////////////////////////////////// |
| 628 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 629 | class SkSpotLight : public SkLight { |
| 630 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 631 | SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, SkColor color) |
| 632 | : INHERITED(color), |
| 633 | fLocation(location), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 634 | fTarget(target), |
| 635 | fSpecularExponent(specularExponent) |
| 636 | { |
| 637 | fS = target - location; |
| 638 | fS.normalize(); |
| 639 | fCosOuterConeAngle = SkScalarCos(SkDegreesToRadians(cutoffAngle)); |
| 640 | const SkScalar antiAliasThreshold = SkFloatToScalar(0.016f); |
| 641 | fCosInnerConeAngle = fCosOuterConeAngle + antiAliasThreshold; |
| 642 | fConeScale = SkScalarInvert(antiAliasThreshold); |
| 643 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 644 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 645 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 646 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 647 | fLocation.fY - SkIntToScalar(y), |
| 648 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 649 | direction.normalize(); |
| 650 | return direction; |
| 651 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 652 | SkPoint3 lightColor(const SkPoint3& surfaceToLight) const { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 653 | SkScalar cosAngle = -surfaceToLight.dot(fS); |
| 654 | if (cosAngle < fCosOuterConeAngle) { |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 655 | return SkPoint3(0, 0, 0); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 656 | } |
| 657 | SkScalar scale = SkScalarPow(cosAngle, fSpecularExponent); |
| 658 | if (cosAngle < fCosInnerConeAngle) { |
| 659 | scale = SkScalarMul(scale, cosAngle - fCosOuterConeAngle); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 660 | return color() * SkScalarMul(scale, fConeScale); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 661 | } |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 662 | return color() * scale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 663 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 664 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 665 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 666 | return SkNEW(GrGLSpotLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 667 | #else |
| 668 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 669 | return NULL; |
| 670 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 671 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 672 | virtual LightType type() const { return kSpot_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 673 | const SkPoint3& location() const { return fLocation; } |
| 674 | const SkPoint3& target() const { return fTarget; } |
| 675 | SkScalar specularExponent() const { return fSpecularExponent; } |
| 676 | SkScalar cosInnerConeAngle() const { return fCosInnerConeAngle; } |
| 677 | SkScalar cosOuterConeAngle() const { return fCosOuterConeAngle; } |
| 678 | SkScalar coneScale() const { return fConeScale; } |
senorblanco@chromium.org | eb31184 | 2012-07-11 20:49:26 +0000 | [diff] [blame] | 679 | const SkPoint3& s() const { return fS; } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 680 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 681 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpotLight) |
| 682 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 683 | protected: |
| 684 | SkSpotLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 685 | fLocation = readPoint3(buffer); |
| 686 | fTarget = readPoint3(buffer); |
| 687 | fSpecularExponent = buffer.readScalar(); |
| 688 | fCosOuterConeAngle = buffer.readScalar(); |
| 689 | fCosInnerConeAngle = buffer.readScalar(); |
| 690 | fConeScale = buffer.readScalar(); |
| 691 | fS = readPoint3(buffer); |
| 692 | } |
| 693 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 694 | INHERITED::flatten(buffer); |
| 695 | writePoint3(fLocation, buffer); |
| 696 | writePoint3(fTarget, buffer); |
| 697 | buffer.writeScalar(fSpecularExponent); |
| 698 | buffer.writeScalar(fCosOuterConeAngle); |
| 699 | buffer.writeScalar(fCosInnerConeAngle); |
| 700 | buffer.writeScalar(fConeScale); |
| 701 | writePoint3(fS, buffer); |
| 702 | } |
| 703 | |
senorblanco@chromium.org | bd9fad6 | 2012-07-11 16:25:37 +0000 | [diff] [blame] | 704 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 705 | if (other.type() != kSpot_LightType) { |
| 706 | return false; |
| 707 | } |
| 708 | |
| 709 | const SkSpotLight& o = static_cast<const SkSpotLight&>(other); |
| 710 | return INHERITED::isEqual(other) && |
| 711 | fLocation == o.fLocation && |
| 712 | fTarget == o.fTarget && |
| 713 | fSpecularExponent == o.fSpecularExponent && |
| 714 | fCosOuterConeAngle == o.fCosOuterConeAngle; |
| 715 | } |
| 716 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 717 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 718 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 719 | SkPoint3 fLocation; |
| 720 | SkPoint3 fTarget; |
| 721 | SkScalar fSpecularExponent; |
| 722 | SkScalar fCosOuterConeAngle; |
| 723 | SkScalar fCosInnerConeAngle; |
| 724 | SkScalar fConeScale; |
| 725 | SkPoint3 fS; |
| 726 | }; |
| 727 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 728 | /////////////////////////////////////////////////////////////////////////////// |
| 729 | |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 730 | SkLightingImageFilter::SkLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkImageFilter* input) |
| 731 | : INHERITED(input), |
| 732 | fLight(light), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 733 | fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255))) |
| 734 | { |
| 735 | SkASSERT(fLight); |
reed@google.com | 51f3866 | 2012-06-27 14:24:29 +0000 | [diff] [blame] | 736 | // our caller knows that we take ownership of the light, so we don't |
| 737 | // need to call ref() here. |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 741 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 742 | SkScalar kd, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 743 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 744 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, kd, |
| 745 | input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | SkImageFilter* SkLightingImageFilter::CreatePointLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 749 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 750 | SkScalar kd, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 751 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 752 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, kd, |
| 753 | input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | SkImageFilter* SkLightingImageFilter::CreateSpotLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 757 | const SkPoint3& location, const SkPoint3& target, |
| 758 | SkScalar specularExponent, SkScalar cutoffAngle, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 759 | SkColor lightColor, SkScalar surfaceScale, SkScalar kd, |
| 760 | SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 761 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 762 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, |
| 763 | cutoffAngle, lightColor)), |
| 764 | surfaceScale, kd, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 765 | } |
| 766 | |
| 767 | SkImageFilter* SkLightingImageFilter::CreateDistantLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 768 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 769 | SkScalar ks, SkScalar shininess, SkImageFilter* input) { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 770 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 771 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), |
| 772 | surfaceScale, ks, shininess, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 773 | } |
| 774 | |
| 775 | SkImageFilter* SkLightingImageFilter::CreatePointLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 776 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 777 | SkScalar ks, SkScalar shininess, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 778 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 779 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), |
| 780 | surfaceScale, ks, shininess, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | SkImageFilter* SkLightingImageFilter::CreateSpotLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 784 | const SkPoint3& location, const SkPoint3& target, |
| 785 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 786 | SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 787 | SkScalar ks, SkScalar shininess, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 788 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 789 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 790 | surfaceScale, ks, shininess, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 791 | } |
| 792 | |
| 793 | SkLightingImageFilter::~SkLightingImageFilter() { |
| 794 | fLight->unref(); |
| 795 | } |
| 796 | |
| 797 | SkLightingImageFilter::SkLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 798 | : INHERITED(buffer) |
| 799 | { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 800 | fLight = buffer.readFlattenableT<SkLight>(); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 801 | fSurfaceScale = buffer.readScalar(); |
| 802 | } |
| 803 | |
| 804 | void SkLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 805 | this->INHERITED::flatten(buffer); |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 806 | buffer.writeFlattenable(fLight); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 807 | buffer.writeScalar(fSurfaceScale); |
| 808 | } |
| 809 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 810 | /////////////////////////////////////////////////////////////////////////////// |
| 811 | |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 812 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd, SkImageFilter* input) |
| 813 | : SkLightingImageFilter(light, surfaceScale, input), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 814 | fKD(kd) |
| 815 | { |
| 816 | } |
| 817 | |
| 818 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 819 | : INHERITED(buffer) |
| 820 | { |
| 821 | fKD = buffer.readScalar(); |
| 822 | } |
| 823 | |
| 824 | void SkDiffuseLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 825 | this->INHERITED::flatten(buffer); |
| 826 | buffer.writeScalar(fKD); |
| 827 | } |
| 828 | |
| 829 | bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*, |
| 830 | const SkBitmap& src, |
| 831 | const SkMatrix&, |
| 832 | SkBitmap* dst, |
| 833 | SkIPoint*) { |
| 834 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 835 | return false; |
| 836 | } |
| 837 | SkAutoLockPixels alp(src); |
| 838 | if (!src.getPixels()) { |
| 839 | return false; |
| 840 | } |
| 841 | if (src.width() < 2 || src.height() < 2) { |
| 842 | return false; |
| 843 | } |
| 844 | dst->setConfig(src.config(), src.width(), src.height()); |
| 845 | dst->allocPixels(); |
| 846 | |
| 847 | DiffuseLightingType lightingType(fKD); |
| 848 | switch (light()->type()) { |
| 849 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 850 | lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 851 | break; |
| 852 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 853 | lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 854 | break; |
| 855 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 856 | lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 857 | break; |
| 858 | } |
| 859 | return true; |
| 860 | } |
| 861 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 862 | bool SkDiffuseLightingImageFilter::asNewEffect(GrEffectRef** effect, |
bsalomon@google.com | 8ea78d8 | 2012-10-24 20:11:30 +0000 | [diff] [blame] | 863 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 864 | #if SK_SUPPORT_GPU |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 865 | if (effect) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 866 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 867 | *effect = GrDiffuseLightingEffect::Create(texture, light(), scale, kd()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 868 | } |
| 869 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 870 | #else |
| 871 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 872 | return false; |
| 873 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 874 | } |
| 875 | |
| 876 | /////////////////////////////////////////////////////////////////////////////// |
| 877 | |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 878 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess, SkImageFilter* input) |
| 879 | : SkLightingImageFilter(light, surfaceScale, input), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 880 | fKS(ks), |
| 881 | fShininess(shininess) |
| 882 | { |
| 883 | } |
| 884 | |
| 885 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 886 | : INHERITED(buffer) |
| 887 | { |
| 888 | fKS = buffer.readScalar(); |
| 889 | fShininess = buffer.readScalar(); |
| 890 | } |
| 891 | |
| 892 | void SkSpecularLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 893 | this->INHERITED::flatten(buffer); |
| 894 | buffer.writeScalar(fKS); |
| 895 | buffer.writeScalar(fShininess); |
| 896 | } |
| 897 | |
| 898 | bool SkSpecularLightingImageFilter::onFilterImage(Proxy*, |
| 899 | const SkBitmap& src, |
| 900 | const SkMatrix&, |
| 901 | SkBitmap* dst, |
| 902 | SkIPoint*) { |
| 903 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 904 | return false; |
| 905 | } |
| 906 | SkAutoLockPixels alp(src); |
| 907 | if (!src.getPixels()) { |
| 908 | return false; |
| 909 | } |
| 910 | if (src.width() < 2 || src.height() < 2) { |
| 911 | return false; |
| 912 | } |
| 913 | dst->setConfig(src.config(), src.width(), src.height()); |
| 914 | dst->allocPixels(); |
| 915 | |
| 916 | SpecularLightingType lightingType(fKS, fShininess); |
| 917 | switch (light()->type()) { |
| 918 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 919 | lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 920 | break; |
| 921 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 922 | lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 923 | break; |
| 924 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 925 | lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 926 | break; |
| 927 | } |
| 928 | return true; |
| 929 | } |
| 930 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 931 | bool SkSpecularLightingImageFilter::asNewEffect(GrEffectRef** effect, |
bsalomon@google.com | 8ea78d8 | 2012-10-24 20:11:30 +0000 | [diff] [blame] | 932 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 933 | #if SK_SUPPORT_GPU |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 934 | if (effect) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 935 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 936 | *effect = GrSpecularLightingEffect::Create(texture, light(), scale, ks(), shininess()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 937 | } |
| 938 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 939 | #else |
| 940 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 941 | return false; |
| 942 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 943 | } |
| 944 | |
| 945 | /////////////////////////////////////////////////////////////////////////////// |
| 946 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 947 | #if SK_SUPPORT_GPU |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 948 | |
| 949 | namespace { |
bsalomon@google.com | 73a9694 | 2013-02-13 16:31:19 +0000 | [diff] [blame] | 950 | SkPoint3 random_point3(SkMWCRandom* random) { |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 951 | return SkPoint3(SkScalarToFloat(random->nextSScalar1()), |
| 952 | SkScalarToFloat(random->nextSScalar1()), |
| 953 | SkScalarToFloat(random->nextSScalar1())); |
| 954 | } |
| 955 | |
bsalomon@google.com | 73a9694 | 2013-02-13 16:31:19 +0000 | [diff] [blame] | 956 | SkLight* create_random_light(SkMWCRandom* random) { |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 957 | int type = random->nextULessThan(3); |
| 958 | switch (type) { |
| 959 | case 0: { |
| 960 | return SkNEW_ARGS(SkDistantLight, (random_point3(random), random->nextU())); |
| 961 | } |
| 962 | case 1: { |
| 963 | return SkNEW_ARGS(SkPointLight, (random_point3(random), random->nextU())); |
| 964 | } |
| 965 | case 2: { |
| 966 | return SkNEW_ARGS(SkSpotLight, (random_point3(random), |
| 967 | random_point3(random), |
| 968 | random->nextUScalar1(), |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 969 | random->nextUScalar1(), |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 970 | random->nextU())); |
| 971 | } |
| 972 | default: |
| 973 | GrCrash(); |
| 974 | return NULL; |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | } |
| 979 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 980 | class GrGLLightingEffect : public GrGLEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 981 | public: |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 982 | GrGLLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 983 | const GrDrawEffect& effect); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 984 | virtual ~GrGLLightingEffect(); |
| 985 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 986 | virtual void emitCode(GrGLShaderBuilder*, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 987 | const GrDrawEffect&, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 988 | EffectKey, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 989 | const char* outputColor, |
| 990 | const char* inputColor, |
| 991 | const TextureSamplerArray&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 992 | |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 993 | static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 994 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 995 | /** |
| 996 | * Subclasses of GrGLLightingEffect must call INHERITED::setData(); |
| 997 | */ |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 998 | virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 999 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1000 | protected: |
| 1001 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) = 0; |
| 1002 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1003 | private: |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1004 | typedef GrGLEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1005 | |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1006 | UniformHandle fImageIncrementUni; |
| 1007 | UniformHandle fSurfaceScaleUni; |
| 1008 | GrGLLight* fLight; |
| 1009 | GrGLEffectMatrix fEffectMatrix; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1010 | }; |
| 1011 | |
| 1012 | /////////////////////////////////////////////////////////////////////////////// |
| 1013 | |
| 1014 | class GrGLDiffuseLightingEffect : public GrGLLightingEffect { |
| 1015 | public: |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1016 | GrGLDiffuseLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1017 | const GrDrawEffect& drawEffect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1018 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) SK_OVERRIDE; |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1019 | virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1020 | |
| 1021 | private: |
| 1022 | typedef GrGLLightingEffect INHERITED; |
| 1023 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1024 | UniformHandle fKDUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1025 | }; |
| 1026 | |
| 1027 | /////////////////////////////////////////////////////////////////////////////// |
| 1028 | |
| 1029 | class GrGLSpecularLightingEffect : public GrGLLightingEffect { |
| 1030 | public: |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1031 | GrGLSpecularLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1032 | const GrDrawEffect& effect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1033 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) SK_OVERRIDE; |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1034 | virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1035 | |
| 1036 | private: |
| 1037 | typedef GrGLLightingEffect INHERITED; |
| 1038 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1039 | UniformHandle fKSUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1040 | UniformHandle fShininessUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1041 | }; |
| 1042 | |
| 1043 | /////////////////////////////////////////////////////////////////////////////// |
| 1044 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1045 | GrLightingEffect::GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale) |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1046 | : INHERITED(texture, MakeDivByTextureWHMatrix(texture)) |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1047 | , fLight(light) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1048 | , fSurfaceScale(surfaceScale) { |
| 1049 | fLight->ref(); |
| 1050 | } |
| 1051 | |
| 1052 | GrLightingEffect::~GrLightingEffect() { |
| 1053 | fLight->unref(); |
| 1054 | } |
| 1055 | |
bsalomon@google.com | 8a252f7 | 2013-01-22 20:35:13 +0000 | [diff] [blame] | 1056 | bool GrLightingEffect::onIsEqual(const GrEffect& sBase) const { |
bsalomon@google.com | 6340a41 | 2013-01-22 19:55:59 +0000 | [diff] [blame] | 1057 | const GrLightingEffect& s = CastEffect<GrLightingEffect>(sBase); |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 1058 | return this->texture(0) == s.texture(0) && |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1059 | fLight->isEqual(*s.fLight) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1060 | fSurfaceScale == s.fSurfaceScale; |
| 1061 | } |
| 1062 | |
| 1063 | /////////////////////////////////////////////////////////////////////////////// |
| 1064 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1065 | GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 1066 | : INHERITED(texture, light, surfaceScale), fKD(kd) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1067 | } |
| 1068 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1069 | const GrBackendEffectFactory& GrDiffuseLightingEffect::getFactory() const { |
| 1070 | return GrTBackendEffectFactory<GrDiffuseLightingEffect>::getInstance(); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1071 | } |
| 1072 | |
bsalomon@google.com | 8a252f7 | 2013-01-22 20:35:13 +0000 | [diff] [blame] | 1073 | bool GrDiffuseLightingEffect::onIsEqual(const GrEffect& sBase) const { |
bsalomon@google.com | 6340a41 | 2013-01-22 19:55:59 +0000 | [diff] [blame] | 1074 | const GrDiffuseLightingEffect& s = CastEffect<GrDiffuseLightingEffect>(sBase); |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 1075 | return INHERITED::onIsEqual(sBase) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1076 | this->kd() == s.kd(); |
| 1077 | } |
| 1078 | |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 1079 | GR_DEFINE_EFFECT_TEST(GrDiffuseLightingEffect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1080 | |
bsalomon@google.com | 73a9694 | 2013-02-13 16:31:19 +0000 | [diff] [blame] | 1081 | GrEffectRef* GrDiffuseLightingEffect::TestCreate(SkMWCRandom* random, |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 1082 | GrContext* context, |
| 1083 | GrTexture* textures[]) { |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1084 | SkScalar surfaceScale = random->nextSScalar1(); |
| 1085 | SkScalar kd = random->nextUScalar1(); |
| 1086 | SkAutoTUnref<SkLight> light(create_random_light(random)); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 1087 | return GrDiffuseLightingEffect::Create(textures[GrEffectUnitTest::kAlphaTextureIdx], |
| 1088 | light, surfaceScale, kd); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1089 | } |
| 1090 | |
| 1091 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1092 | /////////////////////////////////////////////////////////////////////////////// |
| 1093 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1094 | GrGLLightingEffect::GrGLLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1095 | const GrDrawEffect& drawEffect) |
bsalomon@google.com | 374e759 | 2012-10-23 17:30:45 +0000 | [diff] [blame] | 1096 | : INHERITED(factory) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1097 | , fImageIncrementUni(kInvalidUniformHandle) |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1098 | , fSurfaceScaleUni(kInvalidUniformHandle) |
| 1099 | , fEffectMatrix(drawEffect.castEffect<GrLightingEffect>().coordsType()) { |
| 1100 | const GrLightingEffect& m = drawEffect.castEffect<GrLightingEffect>(); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1101 | fLight = m.light()->createGLLight(); |
| 1102 | } |
| 1103 | |
| 1104 | GrGLLightingEffect::~GrGLLightingEffect() { |
| 1105 | delete fLight; |
| 1106 | } |
| 1107 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1108 | void GrGLLightingEffect::emitCode(GrGLShaderBuilder* builder, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1109 | const GrDrawEffect&, |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1110 | EffectKey key, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1111 | const char* outputColor, |
| 1112 | const char* inputColor, |
| 1113 | const TextureSamplerArray& samplers) { |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1114 | const char* coords; |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1115 | fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &coords); |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1116 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1117 | fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1118 | kVec2f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1119 | "ImageIncrement"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1120 | fSurfaceScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1121 | kFloat_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1122 | "SurfaceScale"); |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1123 | fLight->emitLightColorUniform(builder); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1124 | SkString lightFunc; |
| 1125 | this->emitLightFunc(builder, &lightFunc); |
| 1126 | static const GrGLShaderVar gSobelArgs[] = { |
| 1127 | GrGLShaderVar("a", kFloat_GrSLType), |
| 1128 | GrGLShaderVar("b", kFloat_GrSLType), |
| 1129 | GrGLShaderVar("c", kFloat_GrSLType), |
| 1130 | GrGLShaderVar("d", kFloat_GrSLType), |
| 1131 | GrGLShaderVar("e", kFloat_GrSLType), |
| 1132 | GrGLShaderVar("f", kFloat_GrSLType), |
| 1133 | GrGLShaderVar("scale", kFloat_GrSLType), |
| 1134 | }; |
| 1135 | SkString sobelFuncName; |
| 1136 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1137 | kFloat_GrSLType, |
| 1138 | "sobel", |
| 1139 | SK_ARRAY_COUNT(gSobelArgs), |
| 1140 | gSobelArgs, |
| 1141 | "\treturn (-a + b - 2.0 * c + 2.0 * d -e + f) * scale;\n", |
| 1142 | &sobelFuncName); |
| 1143 | static const GrGLShaderVar gPointToNormalArgs[] = { |
| 1144 | GrGLShaderVar("x", kFloat_GrSLType), |
| 1145 | GrGLShaderVar("y", kFloat_GrSLType), |
| 1146 | GrGLShaderVar("scale", kFloat_GrSLType), |
| 1147 | }; |
| 1148 | SkString pointToNormalName; |
| 1149 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1150 | kVec3f_GrSLType, |
| 1151 | "pointToNormal", |
| 1152 | SK_ARRAY_COUNT(gPointToNormalArgs), |
| 1153 | gPointToNormalArgs, |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1154 | "\treturn normalize(vec3(-x * scale, y * scale, 1));\n", |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1155 | &pointToNormalName); |
| 1156 | |
| 1157 | static const GrGLShaderVar gInteriorNormalArgs[] = { |
| 1158 | GrGLShaderVar("m", kFloat_GrSLType, 9), |
| 1159 | GrGLShaderVar("surfaceScale", kFloat_GrSLType), |
| 1160 | }; |
| 1161 | SkString interiorNormalBody; |
| 1162 | interiorNormalBody.appendf("\treturn %s(%s(m[0], m[2], m[3], m[5], m[6], m[8], 0.25),\n" |
| 1163 | "\t %s(m[0], m[6], m[1], m[7], m[2], m[8], 0.25),\n" |
| 1164 | "\t surfaceScale);\n", |
| 1165 | pointToNormalName.c_str(), |
| 1166 | sobelFuncName.c_str(), |
| 1167 | sobelFuncName.c_str()); |
| 1168 | SkString interiorNormalName; |
| 1169 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1170 | kVec3f_GrSLType, |
| 1171 | "interiorNormal", |
| 1172 | SK_ARRAY_COUNT(gInteriorNormalArgs), |
| 1173 | gInteriorNormalArgs, |
| 1174 | interiorNormalBody.c_str(), |
| 1175 | &interiorNormalName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1176 | |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1177 | builder->fsCodeAppendf("\t\tvec2 coord = %s;\n", coords); |
| 1178 | builder->fsCodeAppend("\t\tfloat m[9];\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1179 | |
| 1180 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1181 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1182 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1183 | int index = 0; |
| 1184 | for (int dy = -1; dy <= 1; dy++) { |
| 1185 | for (int dx = -1; dx <= 1; dx++) { |
| 1186 | SkString texCoords; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1187 | texCoords.appendf("coord + vec2(%d, %d) * %s", dx, dy, imgInc); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1188 | builder->fsCodeAppendf("\t\tm[%d] = ", index++); |
| 1189 | builder->appendTextureLookup(GrGLShaderBuilder::kFragment_ShaderType, |
| 1190 | samplers[0], |
| 1191 | texCoords.c_str()); |
| 1192 | builder->fsCodeAppend(".a;\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1193 | } |
| 1194 | } |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1195 | builder->fsCodeAppend("\t\tvec3 surfaceToLight = "); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1196 | SkString arg; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1197 | arg.appendf("%s * m[4]", surfScale); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1198 | fLight->emitSurfaceToLight(builder, arg.c_str()); |
| 1199 | builder->fsCodeAppend(";\n"); |
| 1200 | builder->fsCodeAppendf("\t\t%s = %s(%s(m, %s), surfaceToLight, ", |
| 1201 | outputColor, lightFunc.c_str(), interiorNormalName.c_str(), surfScale); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1202 | fLight->emitLightColor(builder, "surfaceToLight"); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1203 | builder->fsCodeAppend(");\n"); |
| 1204 | SkString modulate; |
| 1205 | GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); |
| 1206 | builder->fsCodeAppend(modulate.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1207 | } |
| 1208 | |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1209 | GrGLEffect::EffectKey GrGLLightingEffect::GenKey(const GrDrawEffect& drawEffect, |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 1210 | const GrGLCaps& caps) { |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1211 | const GrLightingEffect& lighting = drawEffect.castEffect<GrLightingEffect>(); |
| 1212 | EffectKey key = lighting.light()->type(); |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1213 | key <<= GrGLEffectMatrix::kKeyBits; |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1214 | EffectKey matrixKey = GrGLEffectMatrix::GenKey(lighting.getMatrix(), |
| 1215 | drawEffect, |
| 1216 | lighting.coordsType(), |
| 1217 | lighting.texture(0)); |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1218 | return key | matrixKey; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1219 | } |
| 1220 | |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1221 | void GrGLLightingEffect::setData(const GrGLUniformManager& uman, |
| 1222 | const GrDrawEffect& drawEffect) { |
| 1223 | const GrLightingEffect& lighting = drawEffect.castEffect<GrLightingEffect>(); |
| 1224 | GrTexture* texture = lighting.texture(0); |
senorblanco@chromium.org | ef5dbe1 | 2013-01-28 16:42:38 +0000 | [diff] [blame] | 1225 | float ySign = texture->origin() == kTopLeft_GrSurfaceOrigin ? -1.0f : 1.0f; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1226 | uman.set2f(fImageIncrementUni, 1.0f / texture->width(), ySign / texture->height()); |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1227 | uman.set1f(fSurfaceScaleUni, lighting.surfaceScale()); |
| 1228 | fLight->setData(uman, lighting.light()); |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1229 | fEffectMatrix.setData(uman, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1230 | lighting.getMatrix(), |
| 1231 | drawEffect, |
| 1232 | lighting.texture(0)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | /////////////////////////////////////////////////////////////////////////////// |
| 1236 | |
| 1237 | /////////////////////////////////////////////////////////////////////////////// |
| 1238 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1239 | GrGLDiffuseLightingEffect::GrGLDiffuseLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1240 | const GrDrawEffect& drawEffect) |
| 1241 | : INHERITED(factory, drawEffect) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1242 | , fKDUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1243 | } |
| 1244 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1245 | void GrGLDiffuseLightingEffect::emitLightFunc(GrGLShaderBuilder* builder, SkString* funcName) { |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1246 | const char* kd; |
| 1247 | fKDUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1248 | kFloat_GrSLType, |
| 1249 | "KD", |
| 1250 | &kd); |
| 1251 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1252 | static const GrGLShaderVar gLightArgs[] = { |
| 1253 | GrGLShaderVar("normal", kVec3f_GrSLType), |
| 1254 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType), |
| 1255 | GrGLShaderVar("lightColor", kVec3f_GrSLType) |
| 1256 | }; |
| 1257 | SkString lightBody; |
| 1258 | lightBody.appendf("\tfloat colorScale = %s * dot(normal, surfaceToLight);\n", kd); |
| 1259 | lightBody.appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
| 1260 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1261 | kVec4f_GrSLType, |
| 1262 | "light", |
| 1263 | SK_ARRAY_COUNT(gLightArgs), |
| 1264 | gLightArgs, |
| 1265 | lightBody.c_str(), |
| 1266 | funcName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1267 | } |
| 1268 | |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 1269 | void GrGLDiffuseLightingEffect::setData(const GrGLUniformManager& uman, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1270 | const GrDrawEffect& drawEffect) { |
| 1271 | INHERITED::setData(uman, drawEffect); |
| 1272 | const GrDiffuseLightingEffect& diffuse = drawEffect.castEffect<GrDiffuseLightingEffect>(); |
| 1273 | uman.set1f(fKDUni, diffuse.kd()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1274 | } |
| 1275 | |
| 1276 | /////////////////////////////////////////////////////////////////////////////// |
| 1277 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1278 | GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 1279 | : INHERITED(texture, light, surfaceScale), |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1280 | fKS(ks), |
| 1281 | fShininess(shininess) { |
| 1282 | } |
| 1283 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1284 | const GrBackendEffectFactory& GrSpecularLightingEffect::getFactory() const { |
| 1285 | return GrTBackendEffectFactory<GrSpecularLightingEffect>::getInstance(); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
bsalomon@google.com | 8a252f7 | 2013-01-22 20:35:13 +0000 | [diff] [blame] | 1288 | bool GrSpecularLightingEffect::onIsEqual(const GrEffect& sBase) const { |
bsalomon@google.com | 6340a41 | 2013-01-22 19:55:59 +0000 | [diff] [blame] | 1289 | const GrSpecularLightingEffect& s = CastEffect<GrSpecularLightingEffect>(sBase); |
bsalomon@google.com | 68b58c9 | 2013-01-17 16:50:08 +0000 | [diff] [blame] | 1290 | return INHERITED::onIsEqual(sBase) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1291 | this->ks() == s.ks() && |
| 1292 | this->shininess() == s.shininess(); |
| 1293 | } |
| 1294 | |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 1295 | GR_DEFINE_EFFECT_TEST(GrSpecularLightingEffect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1296 | |
bsalomon@google.com | 73a9694 | 2013-02-13 16:31:19 +0000 | [diff] [blame] | 1297 | GrEffectRef* GrSpecularLightingEffect::TestCreate(SkMWCRandom* random, |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 1298 | GrContext* context, |
| 1299 | GrTexture* textures[]) { |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1300 | SkScalar surfaceScale = random->nextSScalar1(); |
| 1301 | SkScalar ks = random->nextUScalar1(); |
| 1302 | SkScalar shininess = random->nextUScalar1(); |
| 1303 | SkAutoTUnref<SkLight> light(create_random_light(random)); |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 1304 | return GrSpecularLightingEffect::Create(textures[GrEffectUnitTest::kAlphaTextureIdx], |
| 1305 | light, surfaceScale, ks, shininess); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1306 | } |
| 1307 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1308 | /////////////////////////////////////////////////////////////////////////////// |
| 1309 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1310 | GrGLSpecularLightingEffect::GrGLSpecularLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1311 | const GrDrawEffect& drawEffect) |
| 1312 | : GrGLLightingEffect(factory, drawEffect) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1313 | , fKSUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1314 | , fShininessUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1315 | } |
| 1316 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1317 | void GrGLSpecularLightingEffect::emitLightFunc(GrGLShaderBuilder* builder, SkString* funcName) { |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1318 | const char* ks; |
| 1319 | const char* shininess; |
| 1320 | |
| 1321 | fKSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1322 | kFloat_GrSLType, "KS", &ks); |
| 1323 | fShininessUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1324 | kFloat_GrSLType, "Shininess", &shininess); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1325 | |
| 1326 | static const GrGLShaderVar gLightArgs[] = { |
| 1327 | GrGLShaderVar("normal", kVec3f_GrSLType), |
| 1328 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType), |
| 1329 | GrGLShaderVar("lightColor", kVec3f_GrSLType) |
| 1330 | }; |
| 1331 | SkString lightBody; |
| 1332 | lightBody.appendf("\tvec3 halfDir = vec3(normalize(surfaceToLight + vec3(0, 0, 1)));\n"); |
| 1333 | lightBody.appendf("\tfloat colorScale = %s * pow(dot(normal, halfDir), %s);\n", ks, shininess); |
senorblanco@chromium.org | 7b734e0 | 2012-10-29 19:47:06 +0000 | [diff] [blame] | 1334 | lightBody.appendf("\tvec3 color = lightColor * clamp(colorScale, 0.0, 1.0);\n"); |
| 1335 | lightBody.appendf("\treturn vec4(color, max(max(color.r, color.g), color.b));\n"); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1336 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1337 | kVec4f_GrSLType, |
| 1338 | "light", |
| 1339 | SK_ARRAY_COUNT(gLightArgs), |
| 1340 | gLightArgs, |
| 1341 | lightBody.c_str(), |
| 1342 | funcName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1343 | } |
| 1344 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1345 | void GrGLSpecularLightingEffect::setData(const GrGLUniformManager& uman, |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1346 | const GrDrawEffect& drawEffect) { |
| 1347 | INHERITED::setData(uman, drawEffect); |
| 1348 | const GrSpecularLightingEffect& spec = drawEffect.castEffect<GrSpecularLightingEffect>(); |
| 1349 | uman.set1f(fKSUni, spec.ks()); |
| 1350 | uman.set1f(fShininessUni, spec.shininess()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1351 | } |
| 1352 | |
| 1353 | /////////////////////////////////////////////////////////////////////////////// |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1354 | void GrGLLight::emitLightColorUniform(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1355 | fColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1356 | kVec3f_GrSLType, "LightColor"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1357 | } |
| 1358 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1359 | void GrGLLight::emitLightColor(GrGLShaderBuilder* builder, |
| 1360 | const char *surfaceToLight) { |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1361 | builder->fsCodeAppend(builder->getUniformCStr(this->lightColorUni())); |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1362 | } |
| 1363 | |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1364 | void GrGLLight::setData(const GrGLUniformManager& uman, const SkLight* light) const { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1365 | setUniformPoint3(uman, fColorUni, light->color() * SkScalarInvert(SkIntToScalar(255))); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1366 | } |
| 1367 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1368 | /////////////////////////////////////////////////////////////////////////////// |
| 1369 | |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1370 | void GrGLDistantLight::setData(const GrGLUniformManager& uman, const SkLight* light) const { |
| 1371 | INHERITED::setData(uman, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1372 | SkASSERT(light->type() == SkLight::kDistant_LightType); |
| 1373 | const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1374 | setUniformNormal3(uman, fDirectionUni, distantLight->direction()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1375 | } |
| 1376 | |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1377 | void GrGLDistantLight::emitSurfaceToLight(GrGLShaderBuilder* builder, const char* z) { |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1378 | const char* dir; |
| 1379 | fDirectionUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1380 | "LightDirection", &dir); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1381 | builder->fsCodeAppend(dir); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1382 | } |
| 1383 | |
| 1384 | /////////////////////////////////////////////////////////////////////////////// |
| 1385 | |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1386 | void GrGLPointLight::setData(const GrGLUniformManager& uman, const SkLight* light) const { |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1387 | INHERITED::setData(uman, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1388 | SkASSERT(light->type() == SkLight::kPoint_LightType); |
| 1389 | const SkPointLight* pointLight = static_cast<const SkPointLight*>(light); |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1390 | setUniformPoint3(uman, fLocationUni, pointLight->location()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1391 | } |
| 1392 | |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1393 | void GrGLPointLight::emitSurfaceToLight(GrGLShaderBuilder* builder, const char* z) { |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1394 | const char* loc; |
| 1395 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1396 | "LightLocation", &loc); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1397 | builder->fsCodeAppendf("normalize(%s - vec3(%s.xy, %s))", loc, builder->fragmentPosition(), z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | /////////////////////////////////////////////////////////////////////////////// |
| 1401 | |
bsalomon@google.com | c781888 | 2013-03-20 19:19:53 +0000 | [diff] [blame^] | 1402 | void GrGLSpotLight::setData(const GrGLUniformManager& uman, const SkLight* light) const { |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1403 | INHERITED::setData(uman, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1404 | SkASSERT(light->type() == SkLight::kSpot_LightType); |
| 1405 | const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light); |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1406 | setUniformPoint3(uman, fLocationUni, spotLight->location()); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1407 | uman.set1f(fExponentUni, spotLight->specularExponent()); |
| 1408 | uman.set1f(fCosInnerConeAngleUni, spotLight->cosInnerConeAngle()); |
| 1409 | uman.set1f(fCosOuterConeAngleUni, spotLight->cosOuterConeAngle()); |
| 1410 | uman.set1f(fConeScaleUni, spotLight->coneScale()); |
| 1411 | setUniformNormal3(uman, fSUni, spotLight->s()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1412 | } |
| 1413 | |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1414 | void GrGLSpotLight::emitSurfaceToLight(GrGLShaderBuilder* builder, const char* z) { |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1415 | const char* location; |
| 1416 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1417 | kVec3f_GrSLType, "LightLocation", &location); |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1418 | builder->fsCodeAppendf("normalize(%s - vec3(%s.xy, %s))", |
| 1419 | location, builder->fragmentPosition(), z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1420 | } |
| 1421 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1422 | void GrGLSpotLight::emitLightColor(GrGLShaderBuilder* builder, |
| 1423 | const char *surfaceToLight) { |
| 1424 | |
| 1425 | const char* color = builder->getUniformCStr(this->lightColorUni()); // created by parent class. |
| 1426 | |
| 1427 | const char* exponent; |
| 1428 | const char* cosInner; |
| 1429 | const char* cosOuter; |
| 1430 | const char* coneScale; |
| 1431 | const char* s; |
| 1432 | fExponentUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1433 | kFloat_GrSLType, "Exponent", &exponent); |
| 1434 | fCosInnerConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1435 | kFloat_GrSLType, "CosInnerConeAngle", &cosInner); |
| 1436 | fCosOuterConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1437 | kFloat_GrSLType, "CosOuterConeAngle", &cosOuter); |
| 1438 | fConeScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1439 | kFloat_GrSLType, "ConeScale", &coneScale); |
| 1440 | fSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1441 | kVec3f_GrSLType, "S", &s); |
| 1442 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1443 | static const GrGLShaderVar gLightColorArgs[] = { |
| 1444 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType) |
| 1445 | }; |
| 1446 | SkString lightColorBody; |
| 1447 | lightColorBody.appendf("\tfloat cosAngle = -dot(surfaceToLight, %s);\n", s); |
| 1448 | lightColorBody.appendf("\tif (cosAngle < %s) {\n", cosOuter); |
| 1449 | lightColorBody.appendf("\t\treturn vec3(0);\n"); |
| 1450 | lightColorBody.appendf("\t}\n"); |
| 1451 | lightColorBody.appendf("\tfloat scale = pow(cosAngle, %s);\n", exponent); |
| 1452 | lightColorBody.appendf("\tif (cosAngle < %s) {\n", cosInner); |
| 1453 | lightColorBody.appendf("\t\treturn %s * scale * (cosAngle - %s) * %s;\n", |
| 1454 | color, cosOuter, coneScale); |
| 1455 | lightColorBody.appendf("\t}\n"); |
| 1456 | lightColorBody.appendf("\treturn %s;\n", color); |
| 1457 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1458 | kVec3f_GrSLType, |
| 1459 | "lightColor", |
| 1460 | SK_ARRAY_COUNT(gLightColorArgs), |
| 1461 | gLightColorArgs, |
| 1462 | lightColorBody.c_str(), |
| 1463 | &fLightColorFunc); |
skia.committer@gmail.com | e862d16 | 2012-10-31 02:01:18 +0000 | [diff] [blame] | 1464 | |
bsalomon@google.com | f910d3b | 2013-03-07 17:06:57 +0000 | [diff] [blame] | 1465 | builder->fsCodeAppendf("%s(%s)", fLightColorFunc.c_str(), surfaceToLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1466 | } |
| 1467 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 1468 | #endif |
| 1469 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 1470 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter) |
| 1471 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter) |
| 1472 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter) |
| 1473 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight) |
| 1474 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight) |
| 1475 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight) |
| 1476 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |