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" |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 11 | #include "SkTypes.h" |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 12 | |
| 13 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 14 | #include "GrProgramStageFactory.h" |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 15 | #include "effects/GrSingleTextureEffect.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 16 | #include "gl/GrGLProgramStage.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 17 | #include "gl/GrGLTexture.h" |
| 18 | #include "GrCustomStage.h" |
| 19 | |
| 20 | class GrGLDiffuseLightingEffect; |
| 21 | class GrGLSpecularLightingEffect; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 22 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 23 | // For brevity |
| 24 | typedef GrGLUniformManager::UniformHandle UniformHandle; |
| 25 | static const UniformHandle kInvalidUniformHandle = GrGLUniformManager::kInvalidUniformHandle; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 26 | #endif |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 27 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 28 | namespace { |
| 29 | |
| 30 | const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3)); |
| 31 | const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3)); |
| 32 | const SkScalar gOneHalf = SkFloatToScalar(0.5f); |
| 33 | const SkScalar gOneQuarter = SkFloatToScalar(0.25f); |
| 34 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 35 | #if SK_SUPPORT_GPU |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 36 | void setUniformPoint3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
bsalomon@google.com | b9119a6 | 2012-07-25 17:55:26 +0000 | [diff] [blame] | 37 | GR_STATIC_ASSERT(sizeof(SkPoint3) == 3 * sizeof(GrGLfloat)); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 38 | uman.set3fv(uni, 0, 1, &point.fX); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 39 | } |
| 40 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 41 | void setUniformNormal3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
| 42 | setUniformPoint3(uman, uni, SkPoint3(point.fX, -point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 43 | } |
| 44 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 45 | void setUniformPoint3FlipY(const GrGLUniformManager& uman, |
| 46 | UniformHandle uni, |
| 47 | const SkPoint3& point, |
| 48 | int height) { |
| 49 | setUniformPoint3(uman, uni, SkPoint3(point.fX, height-point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 50 | } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 51 | #endif |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 52 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 53 | // Shift matrix components to the left, as we advance pixels to the right. |
| 54 | inline void shiftMatrixLeft(int m[9]) { |
| 55 | m[0] = m[1]; |
| 56 | m[3] = m[4]; |
| 57 | m[6] = m[7]; |
| 58 | m[1] = m[2]; |
| 59 | m[4] = m[5]; |
| 60 | m[7] = m[8]; |
| 61 | } |
| 62 | |
| 63 | class DiffuseLightingType { |
| 64 | public: |
| 65 | DiffuseLightingType(SkScalar kd) |
| 66 | : fKD(kd) {} |
| 67 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 68 | SkScalar colorScale = SkScalarMul(fKD, normal.dot(surfaceTolight)); |
| 69 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 70 | SkPoint3 color(lightColor * colorScale); |
| 71 | return SkPackARGB32(255, |
| 72 | SkScalarFloorToInt(color.fX), |
| 73 | SkScalarFloorToInt(color.fY), |
| 74 | SkScalarFloorToInt(color.fZ)); |
| 75 | } |
| 76 | private: |
| 77 | SkScalar fKD; |
| 78 | }; |
| 79 | |
| 80 | class SpecularLightingType { |
| 81 | public: |
| 82 | SpecularLightingType(SkScalar ks, SkScalar shininess) |
| 83 | : fKS(ks), fShininess(shininess) {} |
| 84 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 85 | SkPoint3 halfDir(surfaceTolight); |
| 86 | halfDir.fZ += SK_Scalar1; // eye position is always (0, 0, 1) |
| 87 | halfDir.normalize(); |
| 88 | SkScalar colorScale = SkScalarMul(fKS, |
| 89 | SkScalarPow(normal.dot(halfDir), fShininess)); |
| 90 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 91 | SkPoint3 color(lightColor * colorScale); |
| 92 | return SkPackARGB32(SkScalarFloorToInt(color.maxComponent()), |
| 93 | SkScalarFloorToInt(color.fX), |
| 94 | SkScalarFloorToInt(color.fY), |
| 95 | SkScalarFloorToInt(color.fZ)); |
| 96 | } |
| 97 | private: |
| 98 | SkScalar fKS; |
| 99 | SkScalar fShininess; |
| 100 | }; |
| 101 | |
| 102 | inline SkScalar sobel(int a, int b, int c, int d, int e, int f, SkScalar scale) { |
| 103 | return SkScalarMul(SkIntToScalar(-a + b - 2 * c + 2 * d -e + f), scale); |
| 104 | } |
| 105 | |
| 106 | inline SkPoint3 pointToNormal(SkScalar x, SkScalar y, SkScalar surfaceScale) { |
| 107 | SkPoint3 vector(SkScalarMul(-x, surfaceScale), |
| 108 | SkScalarMul(-y, surfaceScale), |
| 109 | SK_Scalar1); |
| 110 | vector.normalize(); |
| 111 | return vector; |
| 112 | } |
| 113 | |
| 114 | inline SkPoint3 topLeftNormal(int m[9], SkScalar surfaceScale) { |
| 115 | return pointToNormal(sobel(0, 0, m[4], m[5], m[7], m[8], gTwoThirds), |
| 116 | sobel(0, 0, m[4], m[7], m[5], m[8], gTwoThirds), |
| 117 | surfaceScale); |
| 118 | } |
| 119 | |
| 120 | inline SkPoint3 topNormal(int m[9], SkScalar surfaceScale) { |
| 121 | return pointToNormal(sobel( 0, 0, m[3], m[5], m[6], m[8], gOneThird), |
| 122 | sobel(m[3], m[6], m[4], m[7], m[5], m[8], gOneHalf), |
| 123 | surfaceScale); |
| 124 | } |
| 125 | |
| 126 | inline SkPoint3 topRightNormal(int m[9], SkScalar surfaceScale) { |
| 127 | return pointToNormal(sobel( 0, 0, m[3], m[4], m[6], m[7], gTwoThirds), |
| 128 | sobel(m[3], m[6], m[4], m[7], 0, 0, gTwoThirds), |
| 129 | surfaceScale); |
| 130 | } |
| 131 | |
| 132 | inline SkPoint3 leftNormal(int m[9], SkScalar surfaceScale) { |
| 133 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], m[7], m[8], gOneHalf), |
| 134 | sobel( 0, 0, m[1], m[7], m[2], m[8], gOneThird), |
| 135 | surfaceScale); |
| 136 | } |
| 137 | |
| 138 | |
| 139 | inline SkPoint3 interiorNormal(int m[9], SkScalar surfaceScale) { |
| 140 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], gOneQuarter), |
| 141 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], gOneQuarter), |
| 142 | surfaceScale); |
| 143 | } |
| 144 | |
| 145 | inline SkPoint3 rightNormal(int m[9], SkScalar surfaceScale) { |
| 146 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], m[6], m[7], gOneHalf), |
| 147 | sobel(m[0], m[6], m[1], m[7], 0, 0, gOneThird), |
| 148 | surfaceScale); |
| 149 | } |
| 150 | |
| 151 | inline SkPoint3 bottomLeftNormal(int m[9], SkScalar surfaceScale) { |
| 152 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], 0, 0, gTwoThirds), |
| 153 | sobel( 0, 0, m[1], m[4], m[2], m[5], gTwoThirds), |
| 154 | surfaceScale); |
| 155 | } |
| 156 | |
| 157 | inline SkPoint3 bottomNormal(int m[9], SkScalar surfaceScale) { |
| 158 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], 0, 0, gOneThird), |
| 159 | sobel(m[0], m[3], m[1], m[4], m[2], m[5], gOneHalf), |
| 160 | surfaceScale); |
| 161 | } |
| 162 | |
| 163 | inline SkPoint3 bottomRightNormal(int m[9], SkScalar surfaceScale) { |
| 164 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], 0, 0, gTwoThirds), |
| 165 | sobel(m[0], m[3], m[1], m[4], 0, 0, gTwoThirds), |
| 166 | surfaceScale); |
| 167 | } |
| 168 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 169 | 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] | 170 | const LightType* l = static_cast<const LightType*>(light); |
| 171 | int y = 0; |
| 172 | { |
| 173 | const SkPMColor* row1 = src.getAddr32(0, 0); |
| 174 | const SkPMColor* row2 = src.getAddr32(0, 1); |
| 175 | SkPMColor* dptr = dst->getAddr32(0, 0); |
| 176 | int m[9]; |
| 177 | int x = 0; |
| 178 | m[4] = SkGetPackedA32(*row1++); |
| 179 | m[5] = SkGetPackedA32(*row1++); |
| 180 | m[7] = SkGetPackedA32(*row2++); |
| 181 | m[8] = SkGetPackedA32(*row2++); |
| 182 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 183 | *dptr++ = lightingType.light(topLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 184 | for (x = 1; x < src.width() - 1; ++x) |
| 185 | { |
| 186 | shiftMatrixLeft(m); |
| 187 | m[5] = SkGetPackedA32(*row1++); |
| 188 | m[8] = SkGetPackedA32(*row2++); |
| 189 | surfaceToLight = l->surfaceToLight(x, 0, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 190 | *dptr++ = lightingType.light(topNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 191 | } |
| 192 | shiftMatrixLeft(m); |
| 193 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 194 | *dptr++ = lightingType.light(topRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | for (++y; y < src.height() - 1; ++y) { |
| 198 | const SkPMColor* row0 = src.getAddr32(0, y - 1); |
| 199 | const SkPMColor* row1 = src.getAddr32(0, y); |
| 200 | const SkPMColor* row2 = src.getAddr32(0, y + 1); |
| 201 | SkPMColor* dptr = dst->getAddr32(0, y); |
| 202 | int m[9]; |
| 203 | int x = 0; |
| 204 | m[1] = SkGetPackedA32(*row0++); |
| 205 | m[2] = SkGetPackedA32(*row0++); |
| 206 | m[4] = SkGetPackedA32(*row1++); |
| 207 | m[5] = SkGetPackedA32(*row1++); |
| 208 | m[7] = SkGetPackedA32(*row2++); |
| 209 | m[8] = SkGetPackedA32(*row2++); |
| 210 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 211 | *dptr++ = lightingType.light(leftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 212 | for (x = 1; x < src.width() - 1; ++x) { |
| 213 | shiftMatrixLeft(m); |
| 214 | m[2] = SkGetPackedA32(*row0++); |
| 215 | m[5] = SkGetPackedA32(*row1++); |
| 216 | m[8] = SkGetPackedA32(*row2++); |
| 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(interiorNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 219 | } |
| 220 | shiftMatrixLeft(m); |
| 221 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 222 | *dptr++ = lightingType.light(rightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | { |
| 226 | const SkPMColor* row0 = src.getAddr32(0, src.height() - 2); |
| 227 | const SkPMColor* row1 = src.getAddr32(0, src.height() - 1); |
| 228 | int x = 0; |
| 229 | SkPMColor* dptr = dst->getAddr32(0, src.height() - 1); |
| 230 | int m[9]; |
| 231 | m[1] = SkGetPackedA32(*row0++); |
| 232 | m[2] = SkGetPackedA32(*row0++); |
| 233 | m[4] = SkGetPackedA32(*row1++); |
| 234 | m[5] = SkGetPackedA32(*row1++); |
| 235 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 236 | *dptr++ = lightingType.light(bottomLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 237 | for (x = 1; x < src.width() - 1; ++x) |
| 238 | { |
| 239 | shiftMatrixLeft(m); |
| 240 | m[2] = SkGetPackedA32(*row0++); |
| 241 | m[5] = SkGetPackedA32(*row1++); |
| 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(bottomNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 244 | } |
| 245 | shiftMatrixLeft(m); |
| 246 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 247 | *dptr++ = lightingType.light(bottomRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 248 | } |
| 249 | } |
| 250 | |
| 251 | SkPoint3 readPoint3(SkFlattenableReadBuffer& buffer) { |
| 252 | SkPoint3 point; |
| 253 | point.fX = buffer.readScalar(); |
| 254 | point.fY = buffer.readScalar(); |
| 255 | point.fZ = buffer.readScalar(); |
| 256 | return point; |
| 257 | }; |
| 258 | |
| 259 | void writePoint3(const SkPoint3& point, SkFlattenableWriteBuffer& buffer) { |
| 260 | buffer.writeScalar(point.fX); |
| 261 | buffer.writeScalar(point.fY); |
| 262 | buffer.writeScalar(point.fZ); |
| 263 | }; |
| 264 | |
| 265 | class SkDiffuseLightingImageFilter : public SkLightingImageFilter { |
| 266 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 267 | SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 268 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter) |
| 269 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 270 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 271 | SkScalar kd() const { return fKD; } |
| 272 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 273 | protected: |
| 274 | explicit SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 275 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 276 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 277 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 278 | |
| 279 | |
| 280 | private: |
| 281 | typedef SkLightingImageFilter INHERITED; |
| 282 | SkScalar fKD; |
| 283 | }; |
| 284 | |
| 285 | class SkSpecularLightingImageFilter : public SkLightingImageFilter { |
| 286 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 287 | SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 288 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter) |
| 289 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 290 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 291 | SkScalar ks() const { return fKS; } |
| 292 | SkScalar shininess() const { return fShininess; } |
| 293 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 294 | protected: |
| 295 | explicit SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 296 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 297 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 298 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 299 | |
| 300 | private: |
| 301 | typedef SkLightingImageFilter INHERITED; |
| 302 | SkScalar fKS; |
| 303 | SkScalar fShininess; |
| 304 | }; |
| 305 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 306 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 307 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 308 | class GrLightingEffect : public GrSingleTextureEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 309 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 310 | GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 311 | virtual ~GrLightingEffect(); |
| 312 | |
| 313 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 314 | |
| 315 | const SkLight* light() const { return fLight; } |
| 316 | SkScalar surfaceScale() const { return fSurfaceScale; } |
| 317 | private: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 318 | typedef GrSingleTextureEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 319 | const SkLight* fLight; |
| 320 | SkScalar fSurfaceScale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 321 | }; |
| 322 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 323 | class GrDiffuseLightingEffect : public GrLightingEffect { |
| 324 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 325 | GrDiffuseLightingEffect(GrTexture* texture, |
| 326 | const SkLight* light, |
| 327 | SkScalar surfaceScale, |
| 328 | SkScalar kd); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 329 | |
| 330 | static const char* Name() { return "DiffuseLighting"; } |
| 331 | |
| 332 | typedef GrGLDiffuseLightingEffect GLProgramStage; |
| 333 | |
| 334 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 335 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 336 | SkScalar kd() const { return fKD; } |
| 337 | private: |
| 338 | typedef GrLightingEffect INHERITED; |
| 339 | SkScalar fKD; |
| 340 | }; |
| 341 | |
| 342 | class GrSpecularLightingEffect : public GrLightingEffect { |
| 343 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 344 | GrSpecularLightingEffect(GrTexture* texture, |
| 345 | const SkLight* light, |
| 346 | SkScalar surfaceScale, |
| 347 | SkScalar ks, |
| 348 | SkScalar shininess); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 349 | |
| 350 | static const char* Name() { return "SpecularLighting"; } |
| 351 | |
| 352 | typedef GrGLSpecularLightingEffect GLProgramStage; |
| 353 | |
| 354 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 355 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 356 | SkScalar ks() const { return fKS; } |
| 357 | SkScalar shininess() const { return fShininess; } |
| 358 | |
| 359 | private: |
| 360 | typedef GrLightingEffect INHERITED; |
| 361 | SkScalar fKS; |
| 362 | SkScalar fShininess; |
| 363 | }; |
| 364 | |
| 365 | /////////////////////////////////////////////////////////////////////////////// |
| 366 | |
| 367 | class GrGLLight { |
| 368 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 369 | virtual ~GrGLLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 370 | virtual void setupVariables(GrGLShaderBuilder* builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 371 | virtual void emitVS(SkString* out) const {} |
| 372 | virtual void emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const {} |
| 373 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 374 | SkString* out, |
| 375 | const char* z) const = 0; |
| 376 | virtual void emitLightColor(const GrGLShaderBuilder*, |
| 377 | SkString* out, |
| 378 | const char *surfaceToLight) const; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 379 | virtual void setData(const GrGLUniformManager&, const GrRenderTarget* rt, const SkLight* light) const; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 380 | |
| 381 | private: |
| 382 | typedef SkRefCnt INHERITED; |
| 383 | |
| 384 | protected: |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 385 | UniformHandle fColorUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 386 | }; |
| 387 | |
| 388 | /////////////////////////////////////////////////////////////////////////////// |
| 389 | |
| 390 | class GrGLDistantLight : public GrGLLight { |
| 391 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 392 | virtual ~GrGLDistantLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 393 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 394 | virtual void setData(const GrGLUniformManager&, const GrRenderTarget* rt, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 395 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 396 | SkString* out, |
| 397 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 398 | private: |
| 399 | typedef GrGLLight INHERITED; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 400 | UniformHandle fDirectionUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 401 | }; |
| 402 | |
| 403 | /////////////////////////////////////////////////////////////////////////////// |
| 404 | |
| 405 | class GrGLPointLight : public GrGLLight { |
| 406 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 407 | virtual ~GrGLPointLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 408 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 409 | virtual void setData(const GrGLUniformManager&, const GrRenderTarget* rt, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 410 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 411 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 412 | SkString* out, |
| 413 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 414 | private: |
| 415 | typedef GrGLLight INHERITED; |
| 416 | SkPoint3 fLocation; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 417 | UniformHandle fLocationUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 418 | }; |
| 419 | |
| 420 | /////////////////////////////////////////////////////////////////////////////// |
| 421 | |
| 422 | class GrGLSpotLight : public GrGLLight { |
| 423 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 424 | virtual ~GrGLSpotLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 425 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 426 | virtual void setData(const GrGLUniformManager&, const GrRenderTarget* rt, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 427 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 428 | virtual void emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const; |
| 429 | virtual void emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 430 | SkString* out, |
| 431 | const char* z) const SK_OVERRIDE; |
| 432 | virtual void emitLightColor(const GrGLShaderBuilder*, |
| 433 | SkString* out, |
| 434 | const char *surfaceToLight) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 435 | |
| 436 | private: |
| 437 | typedef GrGLLight INHERITED; |
| 438 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 439 | UniformHandle fLocationUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 440 | UniformHandle fExponentUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 441 | UniformHandle fCosOuterConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 442 | UniformHandle fCosInnerConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 443 | UniformHandle fConeScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 444 | UniformHandle fSUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 445 | }; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 446 | #else |
| 447 | |
| 448 | class GrGLLight; |
| 449 | |
| 450 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 451 | |
| 452 | }; |
| 453 | |
| 454 | /////////////////////////////////////////////////////////////////////////////// |
| 455 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 456 | class SkLight : public SkFlattenable { |
| 457 | public: |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 458 | SK_DECLARE_INST_COUNT(SkLight) |
| 459 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 460 | enum LightType { |
| 461 | kDistant_LightType, |
| 462 | kPoint_LightType, |
| 463 | kSpot_LightType, |
| 464 | }; |
| 465 | virtual LightType type() const = 0; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 466 | const SkPoint3& color() const { return fColor; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 467 | virtual GrGLLight* createGLLight() const = 0; |
| 468 | virtual bool isEqual(const SkLight& other) const { |
| 469 | return fColor == other.fColor; |
| 470 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 471 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 472 | protected: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 473 | SkLight(SkColor color) |
| 474 | : fColor(SkIntToScalar(SkColorGetR(color)), |
| 475 | SkIntToScalar(SkColorGetG(color)), |
| 476 | SkIntToScalar(SkColorGetB(color))) {} |
| 477 | SkLight(SkFlattenableReadBuffer& buffer) |
| 478 | : INHERITED(buffer) { |
| 479 | fColor = readPoint3(buffer); |
| 480 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 481 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 482 | INHERITED::flatten(buffer); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 483 | writePoint3(fColor, buffer); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 484 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 485 | |
| 486 | private: |
| 487 | typedef SkFlattenable INHERITED; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 488 | SkPoint3 fColor; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 489 | }; |
| 490 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 491 | SK_DEFINE_INST_COUNT(SkLight) |
| 492 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 493 | /////////////////////////////////////////////////////////////////////////////// |
| 494 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 495 | class SkDistantLight : public SkLight { |
| 496 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 497 | SkDistantLight(const SkPoint3& direction, SkColor color) |
| 498 | : INHERITED(color), fDirection(direction) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 499 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 500 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 501 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 502 | return fDirection; |
| 503 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 504 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 505 | virtual LightType type() const { return kDistant_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 506 | const SkPoint3& direction() const { return fDirection; } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 507 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
| 508 | #if SK_SUPPORT_GPU |
| 509 | return SkNEW(GrGLDistantLight); |
| 510 | #else |
| 511 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 512 | return NULL; |
| 513 | #endif |
| 514 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 515 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
| 516 | if (other.type() != kDistant_LightType) { |
| 517 | return false; |
| 518 | } |
| 519 | |
| 520 | const SkDistantLight& o = static_cast<const SkDistantLight&>(other); |
| 521 | return INHERITED::isEqual(other) && |
| 522 | fDirection == o.fDirection; |
| 523 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 524 | |
| 525 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight) |
| 526 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 527 | protected: |
| 528 | SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 529 | fDirection = readPoint3(buffer); |
| 530 | } |
| 531 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 532 | INHERITED::flatten(buffer); |
| 533 | writePoint3(fDirection, buffer); |
| 534 | } |
| 535 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 536 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 537 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 538 | SkPoint3 fDirection; |
| 539 | }; |
| 540 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 541 | /////////////////////////////////////////////////////////////////////////////// |
| 542 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 543 | class SkPointLight : public SkLight { |
| 544 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 545 | SkPointLight(const SkPoint3& location, SkColor color) |
| 546 | : INHERITED(color), fLocation(location) {} |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 547 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 548 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 549 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 550 | fLocation.fY - SkIntToScalar(y), |
| 551 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 552 | direction.normalize(); |
| 553 | return direction; |
| 554 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 555 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 556 | virtual LightType type() const { return kPoint_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 557 | const SkPoint3& location() const { return fLocation; } |
| 558 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 559 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 560 | return SkNEW(GrGLPointLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 561 | #else |
| 562 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 563 | return NULL; |
| 564 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 565 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 566 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 567 | if (other.type() != kPoint_LightType) { |
| 568 | return false; |
| 569 | } |
| 570 | const SkPointLight& o = static_cast<const SkPointLight&>(other); |
| 571 | return INHERITED::isEqual(other) && |
| 572 | fLocation == o.fLocation; |
| 573 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 574 | |
| 575 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight) |
| 576 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 577 | protected: |
| 578 | SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 579 | fLocation = readPoint3(buffer); |
| 580 | } |
| 581 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 582 | INHERITED::flatten(buffer); |
| 583 | writePoint3(fLocation, buffer); |
| 584 | } |
| 585 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 586 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 587 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 588 | SkPoint3 fLocation; |
| 589 | }; |
| 590 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 591 | /////////////////////////////////////////////////////////////////////////////// |
| 592 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 593 | class SkSpotLight : public SkLight { |
| 594 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 595 | SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, SkColor color) |
| 596 | : INHERITED(color), |
| 597 | fLocation(location), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 598 | fTarget(target), |
| 599 | fSpecularExponent(specularExponent) |
| 600 | { |
| 601 | fS = target - location; |
| 602 | fS.normalize(); |
| 603 | fCosOuterConeAngle = SkScalarCos(SkDegreesToRadians(cutoffAngle)); |
| 604 | const SkScalar antiAliasThreshold = SkFloatToScalar(0.016f); |
| 605 | fCosInnerConeAngle = fCosOuterConeAngle + antiAliasThreshold; |
| 606 | fConeScale = SkScalarInvert(antiAliasThreshold); |
| 607 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 608 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 609 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 610 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 611 | fLocation.fY - SkIntToScalar(y), |
| 612 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 613 | direction.normalize(); |
| 614 | return direction; |
| 615 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 616 | SkPoint3 lightColor(const SkPoint3& surfaceToLight) const { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 617 | SkScalar cosAngle = -surfaceToLight.dot(fS); |
| 618 | if (cosAngle < fCosOuterConeAngle) { |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 619 | return SkPoint3(0, 0, 0); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 620 | } |
| 621 | SkScalar scale = SkScalarPow(cosAngle, fSpecularExponent); |
| 622 | if (cosAngle < fCosInnerConeAngle) { |
| 623 | scale = SkScalarMul(scale, cosAngle - fCosOuterConeAngle); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 624 | return color() * SkScalarMul(scale, fConeScale); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 625 | } |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 626 | return color() * scale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 627 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 628 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 629 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 630 | return SkNEW(GrGLSpotLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 631 | #else |
| 632 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 633 | return NULL; |
| 634 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 635 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 636 | virtual LightType type() const { return kSpot_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 637 | const SkPoint3& location() const { return fLocation; } |
| 638 | const SkPoint3& target() const { return fTarget; } |
| 639 | SkScalar specularExponent() const { return fSpecularExponent; } |
| 640 | SkScalar cosInnerConeAngle() const { return fCosInnerConeAngle; } |
| 641 | SkScalar cosOuterConeAngle() const { return fCosOuterConeAngle; } |
| 642 | SkScalar coneScale() const { return fConeScale; } |
senorblanco@chromium.org | eb31184 | 2012-07-11 20:49:26 +0000 | [diff] [blame] | 643 | const SkPoint3& s() const { return fS; } |
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 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpotLight) |
| 646 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 647 | protected: |
| 648 | SkSpotLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 649 | fLocation = readPoint3(buffer); |
| 650 | fTarget = readPoint3(buffer); |
| 651 | fSpecularExponent = buffer.readScalar(); |
| 652 | fCosOuterConeAngle = buffer.readScalar(); |
| 653 | fCosInnerConeAngle = buffer.readScalar(); |
| 654 | fConeScale = buffer.readScalar(); |
| 655 | fS = readPoint3(buffer); |
| 656 | } |
| 657 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 658 | INHERITED::flatten(buffer); |
| 659 | writePoint3(fLocation, buffer); |
| 660 | writePoint3(fTarget, buffer); |
| 661 | buffer.writeScalar(fSpecularExponent); |
| 662 | buffer.writeScalar(fCosOuterConeAngle); |
| 663 | buffer.writeScalar(fCosInnerConeAngle); |
| 664 | buffer.writeScalar(fConeScale); |
| 665 | writePoint3(fS, buffer); |
| 666 | } |
| 667 | |
senorblanco@chromium.org | bd9fad6 | 2012-07-11 16:25:37 +0000 | [diff] [blame] | 668 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 669 | if (other.type() != kSpot_LightType) { |
| 670 | return false; |
| 671 | } |
| 672 | |
| 673 | const SkSpotLight& o = static_cast<const SkSpotLight&>(other); |
| 674 | return INHERITED::isEqual(other) && |
| 675 | fLocation == o.fLocation && |
| 676 | fTarget == o.fTarget && |
| 677 | fSpecularExponent == o.fSpecularExponent && |
| 678 | fCosOuterConeAngle == o.fCosOuterConeAngle; |
| 679 | } |
| 680 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 681 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 682 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 683 | SkPoint3 fLocation; |
| 684 | SkPoint3 fTarget; |
| 685 | SkScalar fSpecularExponent; |
| 686 | SkScalar fCosOuterConeAngle; |
| 687 | SkScalar fCosInnerConeAngle; |
| 688 | SkScalar fConeScale; |
| 689 | SkPoint3 fS; |
| 690 | }; |
| 691 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 692 | /////////////////////////////////////////////////////////////////////////////// |
| 693 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 694 | SkLightingImageFilter::SkLightingImageFilter(SkLight* light, SkScalar surfaceScale) |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 695 | : fLight(light), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 696 | fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255))) |
| 697 | { |
| 698 | SkASSERT(fLight); |
reed@google.com | 51f3866 | 2012-06-27 14:24:29 +0000 | [diff] [blame] | 699 | // our caller knows that we take ownership of the light, so we don't |
| 700 | // need to call ref() here. |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 701 | } |
| 702 | |
| 703 | SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 704 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 705 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 706 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 707 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | SkImageFilter* SkLightingImageFilter::CreatePointLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 711 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 712 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 713 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 714 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | SkImageFilter* SkLightingImageFilter::CreateSpotLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 718 | const SkPoint3& location, const SkPoint3& target, |
| 719 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 720 | SkColor lightColor, SkScalar surfaceScale, SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 721 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 722 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 723 | surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | SkImageFilter* SkLightingImageFilter::CreateDistantLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 727 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 728 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 729 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 730 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | SkImageFilter* SkLightingImageFilter::CreatePointLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 734 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
| 735 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 736 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 737 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | SkImageFilter* SkLightingImageFilter::CreateSpotLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 741 | const SkPoint3& location, const SkPoint3& target, |
| 742 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 743 | SkColor lightColor, SkScalar surfaceScale, |
| 744 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 745 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 746 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 747 | surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | SkLightingImageFilter::~SkLightingImageFilter() { |
| 751 | fLight->unref(); |
| 752 | } |
| 753 | |
| 754 | SkLightingImageFilter::SkLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 755 | : INHERITED(buffer) |
| 756 | { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 757 | fLight = (SkLight*)buffer.readFlattenable(); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 758 | fSurfaceScale = buffer.readScalar(); |
| 759 | } |
| 760 | |
| 761 | void SkLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 762 | this->INHERITED::flatten(buffer); |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 763 | buffer.writeFlattenable(fLight); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 764 | buffer.writeScalar(fSurfaceScale); |
| 765 | } |
| 766 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 767 | /////////////////////////////////////////////////////////////////////////////// |
| 768 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 769 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 770 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 771 | fKD(kd) |
| 772 | { |
| 773 | } |
| 774 | |
| 775 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 776 | : INHERITED(buffer) |
| 777 | { |
| 778 | fKD = buffer.readScalar(); |
| 779 | } |
| 780 | |
| 781 | void SkDiffuseLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 782 | this->INHERITED::flatten(buffer); |
| 783 | buffer.writeScalar(fKD); |
| 784 | } |
| 785 | |
| 786 | bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*, |
| 787 | const SkBitmap& src, |
| 788 | const SkMatrix&, |
| 789 | SkBitmap* dst, |
| 790 | SkIPoint*) { |
| 791 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 792 | return false; |
| 793 | } |
| 794 | SkAutoLockPixels alp(src); |
| 795 | if (!src.getPixels()) { |
| 796 | return false; |
| 797 | } |
| 798 | if (src.width() < 2 || src.height() < 2) { |
| 799 | return false; |
| 800 | } |
| 801 | dst->setConfig(src.config(), src.width(), src.height()); |
| 802 | dst->allocPixels(); |
| 803 | |
| 804 | DiffuseLightingType lightingType(fKD); |
| 805 | switch (light()->type()) { |
| 806 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 807 | lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 808 | break; |
| 809 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 810 | lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 811 | break; |
| 812 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 813 | lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 814 | break; |
| 815 | } |
| 816 | return true; |
| 817 | } |
| 818 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 819 | bool SkDiffuseLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 820 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 821 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 822 | if (stage) { |
| 823 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 824 | *stage = SkNEW_ARGS(GrDiffuseLightingEffect, (texture, light(), scale, kd())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 825 | } |
| 826 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 827 | #else |
| 828 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 829 | return false; |
| 830 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 831 | } |
| 832 | |
| 833 | /////////////////////////////////////////////////////////////////////////////// |
| 834 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 835 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 836 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 837 | fKS(ks), |
| 838 | fShininess(shininess) |
| 839 | { |
| 840 | } |
| 841 | |
| 842 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 843 | : INHERITED(buffer) |
| 844 | { |
| 845 | fKS = buffer.readScalar(); |
| 846 | fShininess = buffer.readScalar(); |
| 847 | } |
| 848 | |
| 849 | void SkSpecularLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 850 | this->INHERITED::flatten(buffer); |
| 851 | buffer.writeScalar(fKS); |
| 852 | buffer.writeScalar(fShininess); |
| 853 | } |
| 854 | |
| 855 | bool SkSpecularLightingImageFilter::onFilterImage(Proxy*, |
| 856 | const SkBitmap& src, |
| 857 | const SkMatrix&, |
| 858 | SkBitmap* dst, |
| 859 | SkIPoint*) { |
| 860 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 861 | return false; |
| 862 | } |
| 863 | SkAutoLockPixels alp(src); |
| 864 | if (!src.getPixels()) { |
| 865 | return false; |
| 866 | } |
| 867 | if (src.width() < 2 || src.height() < 2) { |
| 868 | return false; |
| 869 | } |
| 870 | dst->setConfig(src.config(), src.width(), src.height()); |
| 871 | dst->allocPixels(); |
| 872 | |
| 873 | SpecularLightingType lightingType(fKS, fShininess); |
| 874 | switch (light()->type()) { |
| 875 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 876 | lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 877 | break; |
| 878 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 879 | lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 880 | break; |
| 881 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 882 | lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 883 | break; |
| 884 | } |
| 885 | return true; |
| 886 | } |
| 887 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 888 | bool SkSpecularLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 889 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 890 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 891 | if (stage) { |
| 892 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 893 | *stage = SkNEW_ARGS(GrSpecularLightingEffect, (texture, light(), scale, ks(), shininess())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 894 | } |
| 895 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 896 | #else |
| 897 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 898 | return false; |
| 899 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 900 | } |
| 901 | |
| 902 | /////////////////////////////////////////////////////////////////////////////// |
| 903 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 904 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 905 | class GrGLLightingEffect : public GrGLProgramStage { |
| 906 | public: |
| 907 | GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 908 | const GrCustomStage& stage); |
| 909 | virtual ~GrGLLightingEffect(); |
| 910 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 911 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 912 | virtual void emitVS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 913 | const char* vertexCoords) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 914 | virtual void emitFS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 915 | const char* outputColor, |
| 916 | const char* inputColor, |
| 917 | const char* samplerName) SK_OVERRIDE; |
| 918 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 919 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) = 0; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 920 | |
| 921 | static inline StageKey GenKey(const GrCustomStage& s); |
| 922 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 923 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 924 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 925 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 926 | int stageNum) SK_OVERRIDE; |
| 927 | |
| 928 | private: |
| 929 | typedef GrGLProgramStage INHERITED; |
| 930 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 931 | UniformHandle fImageIncrementUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 932 | UniformHandle fSurfaceScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 933 | GrGLLight* fLight; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 934 | }; |
| 935 | |
| 936 | /////////////////////////////////////////////////////////////////////////////// |
| 937 | |
| 938 | class GrGLDiffuseLightingEffect : public GrGLLightingEffect { |
| 939 | public: |
| 940 | GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 941 | const GrCustomStage& stage); |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 942 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 943 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 944 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 945 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 946 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 947 | int stageNum) SK_OVERRIDE; |
| 948 | |
| 949 | private: |
| 950 | typedef GrGLLightingEffect INHERITED; |
| 951 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 952 | UniformHandle fKDUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 953 | }; |
| 954 | |
| 955 | /////////////////////////////////////////////////////////////////////////////// |
| 956 | |
| 957 | class GrGLSpecularLightingEffect : public GrGLLightingEffect { |
| 958 | public: |
| 959 | GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 960 | const GrCustomStage& stage); |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 961 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 962 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 963 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 964 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 965 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 966 | int stageNum) SK_OVERRIDE; |
| 967 | |
| 968 | private: |
| 969 | typedef GrGLLightingEffect INHERITED; |
| 970 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 971 | UniformHandle fKSUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 972 | UniformHandle fShininessUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 973 | }; |
| 974 | |
| 975 | /////////////////////////////////////////////////////////////////////////////// |
| 976 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 977 | GrLightingEffect::GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale) |
| 978 | : GrSingleTextureEffect(texture) |
| 979 | , fLight(light) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 980 | , fSurfaceScale(surfaceScale) { |
| 981 | fLight->ref(); |
| 982 | } |
| 983 | |
| 984 | GrLightingEffect::~GrLightingEffect() { |
| 985 | fLight->unref(); |
| 986 | } |
| 987 | |
| 988 | bool GrLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 989 | const GrLightingEffect& s = |
| 990 | static_cast<const GrLightingEffect&>(sBase); |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 991 | return INHERITED::isEqual(sBase) && |
| 992 | fLight->isEqual(*s.fLight) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 993 | fSurfaceScale == s.fSurfaceScale; |
| 994 | } |
| 995 | |
| 996 | /////////////////////////////////////////////////////////////////////////////// |
| 997 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 998 | GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 999 | : INHERITED(texture, light, surfaceScale), fKD(kd) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1000 | } |
| 1001 | |
| 1002 | const GrProgramStageFactory& GrDiffuseLightingEffect::getFactory() const { |
| 1003 | return GrTProgramStageFactory<GrDiffuseLightingEffect>::getInstance(); |
| 1004 | } |
| 1005 | |
| 1006 | bool GrDiffuseLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1007 | const GrDiffuseLightingEffect& s = |
| 1008 | static_cast<const GrDiffuseLightingEffect&>(sBase); |
| 1009 | return INHERITED::isEqual(sBase) && |
| 1010 | this->kd() == s.kd(); |
| 1011 | } |
| 1012 | |
| 1013 | /////////////////////////////////////////////////////////////////////////////// |
| 1014 | |
| 1015 | GrGLLightingEffect::GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 1016 | const GrCustomStage& stage) |
| 1017 | : GrGLProgramStage(factory) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1018 | , fImageIncrementUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1019 | , fSurfaceScaleUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1020 | const GrLightingEffect& m = static_cast<const GrLightingEffect&>(stage); |
| 1021 | fLight = m.light()->createGLLight(); |
| 1022 | } |
| 1023 | |
| 1024 | GrGLLightingEffect::~GrGLLightingEffect() { |
| 1025 | delete fLight; |
| 1026 | } |
| 1027 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1028 | void GrGLLightingEffect::setupVariables(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1029 | fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1030 | kVec2f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1031 | "ImageIncrement"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1032 | fSurfaceScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1033 | kFloat_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1034 | "SurfaceScale"); |
| 1035 | fLight->setupVariables(builder); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1036 | } |
| 1037 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1038 | void GrGLLightingEffect::emitVS(GrGLShaderBuilder* builder, |
| 1039 | const char* vertexCoords) { |
| 1040 | fLight->emitVS(&builder->fVSCode); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1041 | } |
| 1042 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1043 | void GrGLLightingEffect::emitFS(GrGLShaderBuilder* builder, |
| 1044 | const char* outputColor, |
| 1045 | const char* inputColor, |
| 1046 | const char* samplerName) { |
| 1047 | SkString* code = &builder->fFSCode; |
| 1048 | SkString* funcs = &builder->fFSFunctions; |
| 1049 | fLight->emitFuncs(builder, funcs); |
| 1050 | this->emitLightFunc(builder, funcs); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1051 | funcs->appendf("float sobel(float a, float b, float c, float d, float e, float f, float scale) {\n"); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1052 | funcs->appendf("\treturn (-a + b - 2.0 * c + 2.0 * d -e + f) * scale;\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1053 | funcs->appendf("}\n"); |
| 1054 | funcs->appendf("vec3 pointToNormal(float x, float y, float scale) {\n"); |
| 1055 | funcs->appendf("\treturn normalize(vec3(-x * scale, -y * scale, 1));\n"); |
| 1056 | funcs->appendf("}\n"); |
| 1057 | funcs->append("\n\ |
| 1058 | vec3 interiorNormal(float m[9], float surfaceScale) {\n\ |
| 1059 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], 0.25),\n\ |
| 1060 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], 0.25),\n\ |
| 1061 | surfaceScale);\n}\n"); |
| 1062 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1063 | code->appendf("\t\tvec2 coord = %s;\n", builder->fSampleCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1064 | code->appendf("\t\tfloat m[9];\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1065 | |
| 1066 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1067 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1068 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1069 | int index = 0; |
| 1070 | for (int dy = -1; dy <= 1; dy++) { |
| 1071 | for (int dx = -1; dx <= 1; dx++) { |
| 1072 | SkString texCoords; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1073 | texCoords.appendf("coord + vec2(%d, %d) * %s", dx, dy, imgInc); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1074 | code->appendf("\t\tm[%d] = ", index++); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1075 | builder->emitTextureLookup(samplerName, texCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1076 | code->appendf(".a;\n"); |
| 1077 | } |
| 1078 | } |
| 1079 | code->appendf("\t\tvec3 surfaceToLight = "); |
| 1080 | SkString arg; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1081 | arg.appendf("%s * m[4]", surfScale); |
| 1082 | fLight->emitSurfaceToLight(builder, code, arg.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1083 | code->appendf(";\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1084 | code->appendf("\t\t%s = light(interiorNormal(m, %s), surfaceToLight, ", outputColor, surfScale); |
| 1085 | fLight->emitLightColor(builder, code, "surfaceToLight"); |
| 1086 | code->appendf(")%s;\n", builder->fModulate.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1087 | } |
| 1088 | |
| 1089 | GrGLProgramStage::StageKey GrGLLightingEffect::GenKey( |
| 1090 | const GrCustomStage& s) { |
| 1091 | return static_cast<const GrLightingEffect&>(s).light()->type(); |
| 1092 | } |
| 1093 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1094 | void GrGLLightingEffect::setData(const GrGLUniformManager& uman, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1095 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1096 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1097 | int stageNum) { |
| 1098 | const GrLightingEffect& effect = |
| 1099 | static_cast<const GrLightingEffect&>(data); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1100 | GrGLTexture* texture = static_cast<GrGLTexture*>(data.texture(0)); |
| 1101 | float ySign = texture->orientation() == GrGLTexture::kTopDown_Orientation ? -1.0f : 1.0f; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1102 | uman.set2f(fImageIncrementUni, 1.0f / texture->width(), ySign / texture->height()); |
| 1103 | uman.set1f(fSurfaceScaleUni, effect.surfaceScale()); |
| 1104 | fLight->setData(uman, rt, effect.light()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1105 | } |
| 1106 | |
| 1107 | /////////////////////////////////////////////////////////////////////////////// |
| 1108 | |
| 1109 | /////////////////////////////////////////////////////////////////////////////// |
| 1110 | |
| 1111 | GrGLDiffuseLightingEffect::GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 1112 | const GrCustomStage& stage) |
| 1113 | : INHERITED(factory, stage) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1114 | , fKDUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1115 | } |
| 1116 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1117 | void GrGLDiffuseLightingEffect::setupVariables(GrGLShaderBuilder* builder) { |
| 1118 | INHERITED::setupVariables(builder); |
| 1119 | fKDUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, "KD"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1120 | } |
| 1121 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1122 | void GrGLDiffuseLightingEffect::emitLightFunc(const GrGLShaderBuilder* builder, SkString* funcs) { |
| 1123 | const char* kd = builder->getUniformCStr(fKDUni); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1124 | funcs->appendf("vec4 light(vec3 normal, vec3 surfaceToLight, vec3 lightColor) {\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1125 | funcs->appendf("\tfloat colorScale = %s * dot(normal, surfaceToLight);\n", kd); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1126 | funcs->appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1127 | funcs->appendf("}\n"); |
| 1128 | } |
| 1129 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1130 | void GrGLDiffuseLightingEffect::setData(const GrGLUniformManager& uman, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1131 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1132 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1133 | int stageNum) { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1134 | INHERITED::setData(uman, data, rt, stageNum); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1135 | const GrDiffuseLightingEffect& effect = |
| 1136 | static_cast<const GrDiffuseLightingEffect&>(data); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1137 | uman.set1f(fKDUni, effect.kd()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1138 | } |
| 1139 | |
| 1140 | /////////////////////////////////////////////////////////////////////////////// |
| 1141 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1142 | GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 1143 | : INHERITED(texture, light, surfaceScale), |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1144 | fKS(ks), |
| 1145 | fShininess(shininess) { |
| 1146 | } |
| 1147 | |
| 1148 | const GrProgramStageFactory& GrSpecularLightingEffect::getFactory() const { |
| 1149 | return GrTProgramStageFactory<GrSpecularLightingEffect>::getInstance(); |
| 1150 | } |
| 1151 | |
| 1152 | bool GrSpecularLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1153 | const GrSpecularLightingEffect& s = |
| 1154 | static_cast<const GrSpecularLightingEffect&>(sBase); |
| 1155 | return INHERITED::isEqual(sBase) && |
| 1156 | this->ks() == s.ks() && |
| 1157 | this->shininess() == s.shininess(); |
| 1158 | } |
| 1159 | |
| 1160 | /////////////////////////////////////////////////////////////////////////////// |
| 1161 | |
| 1162 | GrGLSpecularLightingEffect::GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 1163 | const GrCustomStage& stage) |
| 1164 | : GrGLLightingEffect(factory, stage) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1165 | , fKSUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1166 | , fShininessUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1167 | } |
| 1168 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1169 | void GrGLSpecularLightingEffect::setupVariables(GrGLShaderBuilder* builder) { |
| 1170 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1171 | fKSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1172 | kFloat_GrSLType, "KS"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1173 | fShininessUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1174 | kFloat_GrSLType, "Shininess"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1175 | } |
| 1176 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1177 | void GrGLSpecularLightingEffect::emitLightFunc(const GrGLShaderBuilder* builder, SkString* funcs) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1178 | funcs->appendf("vec4 light(vec3 normal, vec3 surfaceToLight, vec3 lightColor) {\n"); |
| 1179 | funcs->appendf("\tvec3 halfDir = vec3(normalize(surfaceToLight + vec3(0, 0, 1)));\n"); |
| 1180 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1181 | const char* ks = builder->getUniformCStr(fKSUni); |
| 1182 | const char* shininess = builder->getUniformCStr(fShininessUni); |
| 1183 | funcs->appendf("\tfloat colorScale = %s * pow(dot(normal, halfDir), %s);\n", ks, shininess); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1184 | funcs->appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1185 | funcs->appendf("}\n"); |
| 1186 | } |
| 1187 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1188 | void GrGLSpecularLightingEffect::setData(const GrGLUniformManager& uman, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1189 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1190 | const GrRenderTarget* rt, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1191 | int stageNum) { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1192 | INHERITED::setData(uman, data, rt, stageNum); |
| 1193 | const GrSpecularLightingEffect& effect = static_cast<const GrSpecularLightingEffect&>(data); |
| 1194 | uman.set1f(fKSUni, effect.ks()); |
| 1195 | uman.set1f(fShininessUni, effect.shininess()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | /////////////////////////////////////////////////////////////////////////////// |
| 1199 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1200 | void GrGLLight::emitLightColor(const GrGLShaderBuilder* builder, |
| 1201 | SkString* out, |
| 1202 | const char *surfaceToLight) const { |
| 1203 | const char* color = builder->getUniformCStr(fColorUni); |
| 1204 | out->append(color); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1205 | } |
| 1206 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1207 | void GrGLLight::setupVariables(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1208 | fColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1209 | kVec3f_GrSLType, "LightColor"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1212 | void GrGLLight::setData(const GrGLUniformManager& uman, |
| 1213 | const GrRenderTarget* rt, |
| 1214 | const SkLight* light) const { |
| 1215 | setUniformPoint3(uman, fColorUni, light->color() * SkScalarInvert(SkIntToScalar(255))); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1218 | /////////////////////////////////////////////////////////////////////////////// |
| 1219 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1220 | void GrGLDistantLight::setupVariables(GrGLShaderBuilder* builder) { |
| 1221 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1222 | fDirectionUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1223 | "LightDirection"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1224 | } |
| 1225 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1226 | void GrGLDistantLight::setData(const GrGLUniformManager& uman, |
| 1227 | const GrRenderTarget* rt, |
| 1228 | const SkLight* light) const { |
| 1229 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1230 | SkASSERT(light->type() == SkLight::kDistant_LightType); |
| 1231 | const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1232 | setUniformNormal3(uman, fDirectionUni, distantLight->direction()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1233 | } |
| 1234 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1235 | void GrGLDistantLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1236 | SkString* out, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1237 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1238 | const char* dir = builder->getUniformCStr(fDirectionUni); |
| 1239 | out->append(dir); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | /////////////////////////////////////////////////////////////////////////////// |
| 1243 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1244 | void GrGLPointLight::setupVariables(GrGLShaderBuilder* builder) { |
| 1245 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1246 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1247 | "LightLocation"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1250 | void GrGLPointLight::setData(const GrGLUniformManager& uman, |
| 1251 | const GrRenderTarget* rt, |
| 1252 | const SkLight* light) const { |
| 1253 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1254 | SkASSERT(light->type() == SkLight::kPoint_LightType); |
| 1255 | const SkPointLight* pointLight = static_cast<const SkPointLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1256 | setUniformPoint3FlipY(uman, fLocationUni, pointLight->location(), rt->height()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1257 | } |
| 1258 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1259 | void GrGLPointLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1260 | } |
| 1261 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1262 | void GrGLPointLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1263 | SkString* out, |
| 1264 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1265 | const char* loc = builder->getUniformCStr(fLocationUni); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1266 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", loc, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | /////////////////////////////////////////////////////////////////////////////// |
| 1270 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1271 | void GrGLSpotLight::setupVariables(GrGLShaderBuilder* builder) { |
| 1272 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1273 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1274 | kVec3f_GrSLType, "LightLocation"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1275 | fExponentUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1276 | kFloat_GrSLType, "Exponent"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1277 | fCosInnerConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1278 | kFloat_GrSLType, "CosInnerConeAngle"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1279 | fCosOuterConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1280 | kFloat_GrSLType, "CosOuterConeAngle"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1281 | fConeScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1282 | kFloat_GrSLType, "ConeScale"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1283 | fSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1284 | kVec3f_GrSLType, "S"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1285 | } |
| 1286 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1287 | void GrGLSpotLight::setData(const GrGLUniformManager& uman, |
| 1288 | const GrRenderTarget* rt, |
| 1289 | const SkLight* light) const { |
| 1290 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1291 | SkASSERT(light->type() == SkLight::kSpot_LightType); |
| 1292 | const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1293 | setUniformPoint3FlipY(uman, fLocationUni, spotLight->location(), rt->height()); |
| 1294 | uman.set1f(fExponentUni, spotLight->specularExponent()); |
| 1295 | uman.set1f(fCosInnerConeAngleUni, spotLight->cosInnerConeAngle()); |
| 1296 | uman.set1f(fCosOuterConeAngleUni, spotLight->cosOuterConeAngle()); |
| 1297 | uman.set1f(fConeScaleUni, spotLight->coneScale()); |
| 1298 | setUniformNormal3(uman, fSUni, spotLight->s()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1299 | } |
| 1300 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1301 | void GrGLSpotLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1304 | void GrGLSpotLight::emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const { |
| 1305 | const char* exponent = builder->getUniformCStr(fExponentUni); |
| 1306 | const char* cosInner = builder->getUniformCStr(fCosInnerConeAngleUni); |
| 1307 | const char* cosOuter = builder->getUniformCStr(fCosOuterConeAngleUni); |
| 1308 | const char* coneScale = builder->getUniformCStr(fConeScaleUni); |
| 1309 | const char* s = builder->getUniformCStr(fSUni); |
| 1310 | const char* color = builder->getUniformCStr(fColorUni); |
| 1311 | |
| 1312 | out->appendf("vec3 lightColor(vec3 surfaceToLight) {\n"); |
| 1313 | out->appendf("\tfloat cosAngle = -dot(surfaceToLight, %s);\n", s); |
| 1314 | out->appendf("\tif (cosAngle < %s) {\n", cosOuter); |
| 1315 | out->appendf("\t\treturn vec3(0);\n"); |
| 1316 | out->appendf("\t}\n"); |
| 1317 | out->appendf("\tfloat scale = pow(cosAngle, %s);\n", exponent); |
| 1318 | out->appendf("\tif (cosAngle < %s) {\n", cosInner); |
| 1319 | out->appendf("\t\treturn %s * scale * (cosAngle - %s) * %s;\n", color, cosOuter, coneScale); |
| 1320 | out->appendf("\t}\n"); |
| 1321 | out->appendf("\treturn %s;\n", color); |
| 1322 | out->appendf("}\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1323 | } |
| 1324 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1325 | void GrGLSpotLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1326 | SkString* out, |
| 1327 | const char* z) const { |
| 1328 | const char* location= builder->getUniformCStr(fLocationUni); |
| 1329 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", location, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1330 | } |
| 1331 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1332 | void GrGLSpotLight::emitLightColor(const GrGLShaderBuilder* builder, |
| 1333 | SkString* out, const char *surfaceToLight) const { |
| 1334 | out->appendf("lightColor(%s)", surfaceToLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1335 | } |
| 1336 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame^] | 1337 | #endif |
| 1338 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 1339 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter) |
| 1340 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter) |
| 1341 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter) |
| 1342 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight) |
| 1343 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight) |
| 1344 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight) |
| 1345 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |