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" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 12 | #include "GrProgramStageFactory.h" |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 13 | #include "effects/GrSingleTextureEffect.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 14 | #include "gl/GrGLProgramStage.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 15 | #include "gl/GrGLTexture.h" |
| 16 | #include "GrCustomStage.h" |
| 17 | |
| 18 | class GrGLDiffuseLightingEffect; |
| 19 | class GrGLSpecularLightingEffect; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 20 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 21 | // For brevity |
| 22 | typedef GrGLUniformManager::UniformHandle UniformHandle; |
| 23 | static const UniformHandle kInvalidUniformHandle = GrGLUniformManager::kInvalidUniformHandle; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 24 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 25 | namespace { |
| 26 | |
| 27 | const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3)); |
| 28 | const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3)); |
| 29 | const SkScalar gOneHalf = SkFloatToScalar(0.5f); |
| 30 | const SkScalar gOneQuarter = SkFloatToScalar(0.25f); |
| 31 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 32 | void setUniformPoint3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
| 33 | GR_STATIC_ASSERT(offsetof(SkPoint3, fX) + sizeof(float) == offsetof(SkPoint3, fY)); |
| 34 | GR_STATIC_ASSERT(offsetof(SkPoint3, fY) + sizeof(float) == offsetof(SkPoint3, fZ)); |
| 35 | uman.set3fv(uni, 0, 1, &point.fX); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 36 | } |
| 37 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 38 | void setUniformNormal3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
| 39 | setUniformPoint3(uman, uni, SkPoint3(point.fX, -point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 40 | } |
| 41 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 42 | void setUniformPoint3FlipY(const GrGLUniformManager& uman, |
| 43 | UniformHandle uni, |
| 44 | const SkPoint3& point, |
| 45 | int height) { |
| 46 | setUniformPoint3(uman, uni, SkPoint3(point.fX, height-point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 47 | } |
| 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 | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 263 | SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 264 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter) |
| 265 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 266 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 267 | SkScalar kd() const { return fKD; } |
| 268 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 269 | protected: |
| 270 | explicit SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 271 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 272 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 273 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 274 | |
| 275 | |
| 276 | private: |
| 277 | typedef SkLightingImageFilter INHERITED; |
| 278 | SkScalar fKD; |
| 279 | }; |
| 280 | |
| 281 | class SkSpecularLightingImageFilter : public SkLightingImageFilter { |
| 282 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 283 | SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 284 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter) |
| 285 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 286 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 287 | SkScalar ks() const { return fKS; } |
| 288 | SkScalar shininess() const { return fShininess; } |
| 289 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 290 | protected: |
| 291 | explicit SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 292 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 293 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 294 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 295 | |
| 296 | private: |
| 297 | typedef SkLightingImageFilter INHERITED; |
| 298 | SkScalar fKS; |
| 299 | SkScalar fShininess; |
| 300 | }; |
| 301 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 302 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 303 | class GrLightingEffect : public GrSingleTextureEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 304 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 305 | GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 306 | virtual ~GrLightingEffect(); |
| 307 | |
| 308 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 309 | |
| 310 | const SkLight* light() const { return fLight; } |
| 311 | SkScalar surfaceScale() const { return fSurfaceScale; } |
| 312 | private: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 313 | typedef GrSingleTextureEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 314 | const SkLight* fLight; |
| 315 | SkScalar fSurfaceScale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 316 | }; |
| 317 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 318 | class GrDiffuseLightingEffect : public GrLightingEffect { |
| 319 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 320 | GrDiffuseLightingEffect(GrTexture* texture, |
| 321 | const SkLight* light, |
| 322 | SkScalar surfaceScale, |
| 323 | SkScalar kd); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 324 | |
| 325 | static const char* Name() { return "DiffuseLighting"; } |
| 326 | |
| 327 | typedef GrGLDiffuseLightingEffect GLProgramStage; |
| 328 | |
| 329 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 330 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 331 | SkScalar kd() const { return fKD; } |
| 332 | private: |
| 333 | typedef GrLightingEffect INHERITED; |
| 334 | SkScalar fKD; |
| 335 | }; |
| 336 | |
| 337 | class GrSpecularLightingEffect : public GrLightingEffect { |
| 338 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 339 | GrSpecularLightingEffect(GrTexture* texture, |
| 340 | const SkLight* light, |
| 341 | SkScalar surfaceScale, |
| 342 | SkScalar ks, |
| 343 | SkScalar shininess); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 344 | |
| 345 | static const char* Name() { return "SpecularLighting"; } |
| 346 | |
| 347 | typedef GrGLSpecularLightingEffect GLProgramStage; |
| 348 | |
| 349 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 350 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 351 | SkScalar ks() const { return fKS; } |
| 352 | SkScalar shininess() const { return fShininess; } |
| 353 | |
| 354 | private: |
| 355 | typedef GrLightingEffect INHERITED; |
| 356 | SkScalar fKS; |
| 357 | SkScalar fShininess; |
| 358 | }; |
| 359 | |
| 360 | /////////////////////////////////////////////////////////////////////////////// |
| 361 | |
| 362 | class GrGLLight { |
| 363 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 364 | virtual ~GrGLLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 365 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage); |
| 366 | virtual void emitVS(SkString* out) const {} |
| 367 | virtual void emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const {} |
| 368 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 369 | SkString* out, |
| 370 | const char* z) const = 0; |
| 371 | virtual void emitLightColor(const GrGLShaderBuilder*, |
| 372 | SkString* out, |
| 373 | const char *surfaceToLight) const; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 374 | 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] | 375 | |
| 376 | private: |
| 377 | typedef SkRefCnt INHERITED; |
| 378 | |
| 379 | protected: |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 380 | UniformHandle fColorUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 381 | }; |
| 382 | |
| 383 | /////////////////////////////////////////////////////////////////////////////// |
| 384 | |
| 385 | class GrGLDistantLight : public GrGLLight { |
| 386 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 387 | virtual ~GrGLDistantLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 388 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 389 | 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] | 390 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 391 | SkString* out, |
| 392 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 393 | private: |
| 394 | typedef GrGLLight INHERITED; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 395 | UniformHandle fDirectionUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 396 | }; |
| 397 | |
| 398 | /////////////////////////////////////////////////////////////////////////////// |
| 399 | |
| 400 | class GrGLPointLight : public GrGLLight { |
| 401 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 402 | virtual ~GrGLPointLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 403 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 404 | 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] | 405 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 406 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 407 | SkString* out, |
| 408 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 409 | private: |
| 410 | typedef GrGLLight INHERITED; |
| 411 | SkPoint3 fLocation; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 412 | UniformHandle fLocationUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 413 | }; |
| 414 | |
| 415 | /////////////////////////////////////////////////////////////////////////////// |
| 416 | |
| 417 | class GrGLSpotLight : public GrGLLight { |
| 418 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 419 | virtual ~GrGLSpotLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 420 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 421 | 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] | 422 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 423 | virtual void emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const; |
| 424 | virtual void emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 425 | SkString* out, |
| 426 | const char* z) const SK_OVERRIDE; |
| 427 | virtual void emitLightColor(const GrGLShaderBuilder*, |
| 428 | SkString* out, |
| 429 | const char *surfaceToLight) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 430 | |
| 431 | private: |
| 432 | typedef GrGLLight INHERITED; |
| 433 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 434 | UniformHandle fLocationUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 435 | UniformHandle fExponentUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 436 | UniformHandle fCosOuterConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 437 | UniformHandle fCosInnerConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 438 | UniformHandle fConeScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 439 | UniformHandle fSUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 440 | }; |
| 441 | |
| 442 | }; |
| 443 | |
| 444 | /////////////////////////////////////////////////////////////////////////////// |
| 445 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 446 | class SkLight : public SkFlattenable { |
| 447 | public: |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 448 | SK_DECLARE_INST_COUNT(SkLight) |
| 449 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 450 | enum LightType { |
| 451 | kDistant_LightType, |
| 452 | kPoint_LightType, |
| 453 | kSpot_LightType, |
| 454 | }; |
| 455 | virtual LightType type() const = 0; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 456 | const SkPoint3& color() const { return fColor; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 457 | virtual GrGLLight* createGLLight() const = 0; |
| 458 | virtual bool isEqual(const SkLight& other) const { |
| 459 | return fColor == other.fColor; |
| 460 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 461 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 462 | protected: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 463 | SkLight(SkColor color) |
| 464 | : fColor(SkIntToScalar(SkColorGetR(color)), |
| 465 | SkIntToScalar(SkColorGetG(color)), |
| 466 | SkIntToScalar(SkColorGetB(color))) {} |
| 467 | SkLight(SkFlattenableReadBuffer& buffer) |
| 468 | : INHERITED(buffer) { |
| 469 | fColor = readPoint3(buffer); |
| 470 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 471 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 472 | INHERITED::flatten(buffer); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 473 | writePoint3(fColor, buffer); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 474 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 475 | |
| 476 | private: |
| 477 | typedef SkFlattenable INHERITED; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 478 | SkPoint3 fColor; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 479 | }; |
| 480 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 481 | SK_DEFINE_INST_COUNT(SkLight) |
| 482 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 483 | /////////////////////////////////////////////////////////////////////////////// |
| 484 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 485 | class SkDistantLight : public SkLight { |
| 486 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 487 | SkDistantLight(const SkPoint3& direction, SkColor color) |
| 488 | : INHERITED(color), fDirection(direction) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 489 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 490 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 491 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 492 | return fDirection; |
| 493 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 494 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 495 | virtual LightType type() const { return kDistant_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 496 | const SkPoint3& direction() const { return fDirection; } |
| 497 | virtual GrGLLight* createGLLight() const SK_OVERRIDE; |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 498 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
| 499 | if (other.type() != kDistant_LightType) { |
| 500 | return false; |
| 501 | } |
| 502 | |
| 503 | const SkDistantLight& o = static_cast<const SkDistantLight&>(other); |
| 504 | return INHERITED::isEqual(other) && |
| 505 | fDirection == o.fDirection; |
| 506 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 507 | |
| 508 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight) |
| 509 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 510 | protected: |
| 511 | SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 512 | fDirection = readPoint3(buffer); |
| 513 | } |
| 514 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 515 | INHERITED::flatten(buffer); |
| 516 | writePoint3(fDirection, buffer); |
| 517 | } |
| 518 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 519 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 520 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 521 | SkPoint3 fDirection; |
| 522 | }; |
| 523 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 524 | /////////////////////////////////////////////////////////////////////////////// |
| 525 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 526 | class SkPointLight : public SkLight { |
| 527 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 528 | SkPointLight(const SkPoint3& location, SkColor color) |
| 529 | : INHERITED(color), fLocation(location) {} |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 530 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 531 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 532 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 533 | fLocation.fY - SkIntToScalar(y), |
| 534 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 535 | direction.normalize(); |
| 536 | return direction; |
| 537 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 538 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 539 | virtual LightType type() const { return kPoint_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 540 | const SkPoint3& location() const { return fLocation; } |
| 541 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 542 | return SkNEW(GrGLPointLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 543 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 544 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 545 | if (other.type() != kPoint_LightType) { |
| 546 | return false; |
| 547 | } |
| 548 | const SkPointLight& o = static_cast<const SkPointLight&>(other); |
| 549 | return INHERITED::isEqual(other) && |
| 550 | fLocation == o.fLocation; |
| 551 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 552 | |
| 553 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight) |
| 554 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 555 | protected: |
| 556 | SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 557 | fLocation = readPoint3(buffer); |
| 558 | } |
| 559 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 560 | INHERITED::flatten(buffer); |
| 561 | writePoint3(fLocation, buffer); |
| 562 | } |
| 563 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 564 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 565 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 566 | SkPoint3 fLocation; |
| 567 | }; |
| 568 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 569 | /////////////////////////////////////////////////////////////////////////////// |
| 570 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 571 | class SkSpotLight : public SkLight { |
| 572 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 573 | SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, SkColor color) |
| 574 | : INHERITED(color), |
| 575 | fLocation(location), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 576 | fTarget(target), |
| 577 | fSpecularExponent(specularExponent) |
| 578 | { |
| 579 | fS = target - location; |
| 580 | fS.normalize(); |
| 581 | fCosOuterConeAngle = SkScalarCos(SkDegreesToRadians(cutoffAngle)); |
| 582 | const SkScalar antiAliasThreshold = SkFloatToScalar(0.016f); |
| 583 | fCosInnerConeAngle = fCosOuterConeAngle + antiAliasThreshold; |
| 584 | fConeScale = SkScalarInvert(antiAliasThreshold); |
| 585 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 586 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 587 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 588 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 589 | fLocation.fY - SkIntToScalar(y), |
| 590 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 591 | direction.normalize(); |
| 592 | return direction; |
| 593 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 594 | SkPoint3 lightColor(const SkPoint3& surfaceToLight) const { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 595 | SkScalar cosAngle = -surfaceToLight.dot(fS); |
| 596 | if (cosAngle < fCosOuterConeAngle) { |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 597 | return SkPoint3(0, 0, 0); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 598 | } |
| 599 | SkScalar scale = SkScalarPow(cosAngle, fSpecularExponent); |
| 600 | if (cosAngle < fCosInnerConeAngle) { |
| 601 | scale = SkScalarMul(scale, cosAngle - fCosOuterConeAngle); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 602 | return color() * SkScalarMul(scale, fConeScale); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 603 | } |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 604 | return color() * scale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 605 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 606 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 607 | return SkNEW(GrGLSpotLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 608 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 609 | virtual LightType type() const { return kSpot_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 610 | const SkPoint3& location() const { return fLocation; } |
| 611 | const SkPoint3& target() const { return fTarget; } |
| 612 | SkScalar specularExponent() const { return fSpecularExponent; } |
| 613 | SkScalar cosInnerConeAngle() const { return fCosInnerConeAngle; } |
| 614 | SkScalar cosOuterConeAngle() const { return fCosOuterConeAngle; } |
| 615 | SkScalar coneScale() const { return fConeScale; } |
senorblanco@chromium.org | eb31184 | 2012-07-11 20:49:26 +0000 | [diff] [blame] | 616 | const SkPoint3& s() const { return fS; } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 617 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 618 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpotLight) |
| 619 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 620 | protected: |
| 621 | SkSpotLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 622 | fLocation = readPoint3(buffer); |
| 623 | fTarget = readPoint3(buffer); |
| 624 | fSpecularExponent = buffer.readScalar(); |
| 625 | fCosOuterConeAngle = buffer.readScalar(); |
| 626 | fCosInnerConeAngle = buffer.readScalar(); |
| 627 | fConeScale = buffer.readScalar(); |
| 628 | fS = readPoint3(buffer); |
| 629 | } |
| 630 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 631 | INHERITED::flatten(buffer); |
| 632 | writePoint3(fLocation, buffer); |
| 633 | writePoint3(fTarget, buffer); |
| 634 | buffer.writeScalar(fSpecularExponent); |
| 635 | buffer.writeScalar(fCosOuterConeAngle); |
| 636 | buffer.writeScalar(fCosInnerConeAngle); |
| 637 | buffer.writeScalar(fConeScale); |
| 638 | writePoint3(fS, buffer); |
| 639 | } |
| 640 | |
senorblanco@chromium.org | bd9fad6 | 2012-07-11 16:25:37 +0000 | [diff] [blame] | 641 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 642 | if (other.type() != kSpot_LightType) { |
| 643 | return false; |
| 644 | } |
| 645 | |
| 646 | const SkSpotLight& o = static_cast<const SkSpotLight&>(other); |
| 647 | return INHERITED::isEqual(other) && |
| 648 | fLocation == o.fLocation && |
| 649 | fTarget == o.fTarget && |
| 650 | fSpecularExponent == o.fSpecularExponent && |
| 651 | fCosOuterConeAngle == o.fCosOuterConeAngle; |
| 652 | } |
| 653 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 654 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 655 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 656 | SkPoint3 fLocation; |
| 657 | SkPoint3 fTarget; |
| 658 | SkScalar fSpecularExponent; |
| 659 | SkScalar fCosOuterConeAngle; |
| 660 | SkScalar fCosInnerConeAngle; |
| 661 | SkScalar fConeScale; |
| 662 | SkPoint3 fS; |
| 663 | }; |
| 664 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 665 | /////////////////////////////////////////////////////////////////////////////// |
| 666 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 667 | SkLightingImageFilter::SkLightingImageFilter(SkLight* light, SkScalar surfaceScale) |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 668 | : fLight(light), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 669 | fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255))) |
| 670 | { |
| 671 | SkASSERT(fLight); |
reed@google.com | 51f3866 | 2012-06-27 14:24:29 +0000 | [diff] [blame] | 672 | // our caller knows that we take ownership of the light, so we don't |
| 673 | // need to call ref() here. |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 674 | } |
| 675 | |
| 676 | SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 677 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 678 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 679 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 680 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 681 | } |
| 682 | |
| 683 | SkImageFilter* SkLightingImageFilter::CreatePointLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 684 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 685 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 686 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 687 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | SkImageFilter* SkLightingImageFilter::CreateSpotLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 691 | const SkPoint3& location, const SkPoint3& target, |
| 692 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 693 | SkColor lightColor, SkScalar surfaceScale, SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 694 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 695 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 696 | surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 697 | } |
| 698 | |
| 699 | SkImageFilter* SkLightingImageFilter::CreateDistantLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 700 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 701 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 702 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 703 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | SkImageFilter* SkLightingImageFilter::CreatePointLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 707 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
| 708 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 709 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 710 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | SkImageFilter* SkLightingImageFilter::CreateSpotLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 714 | const SkPoint3& location, const SkPoint3& target, |
| 715 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 716 | SkColor lightColor, SkScalar surfaceScale, |
| 717 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 718 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 719 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 720 | surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | SkLightingImageFilter::~SkLightingImageFilter() { |
| 724 | fLight->unref(); |
| 725 | } |
| 726 | |
| 727 | SkLightingImageFilter::SkLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 728 | : INHERITED(buffer) |
| 729 | { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 730 | fLight = (SkLight*)buffer.readFlattenable(); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 731 | fSurfaceScale = buffer.readScalar(); |
| 732 | } |
| 733 | |
| 734 | void SkLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 735 | this->INHERITED::flatten(buffer); |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 736 | buffer.writeFlattenable(fLight); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 737 | buffer.writeScalar(fSurfaceScale); |
| 738 | } |
| 739 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 740 | /////////////////////////////////////////////////////////////////////////////// |
| 741 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 742 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 743 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 744 | fKD(kd) |
| 745 | { |
| 746 | } |
| 747 | |
| 748 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 749 | : INHERITED(buffer) |
| 750 | { |
| 751 | fKD = buffer.readScalar(); |
| 752 | } |
| 753 | |
| 754 | void SkDiffuseLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 755 | this->INHERITED::flatten(buffer); |
| 756 | buffer.writeScalar(fKD); |
| 757 | } |
| 758 | |
| 759 | bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*, |
| 760 | const SkBitmap& src, |
| 761 | const SkMatrix&, |
| 762 | SkBitmap* dst, |
| 763 | SkIPoint*) { |
| 764 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 765 | return false; |
| 766 | } |
| 767 | SkAutoLockPixels alp(src); |
| 768 | if (!src.getPixels()) { |
| 769 | return false; |
| 770 | } |
| 771 | if (src.width() < 2 || src.height() < 2) { |
| 772 | return false; |
| 773 | } |
| 774 | dst->setConfig(src.config(), src.width(), src.height()); |
| 775 | dst->allocPixels(); |
| 776 | |
| 777 | DiffuseLightingType lightingType(fKD); |
| 778 | switch (light()->type()) { |
| 779 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 780 | lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 781 | break; |
| 782 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 783 | lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 784 | break; |
| 785 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 786 | lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 787 | break; |
| 788 | } |
| 789 | return true; |
| 790 | } |
| 791 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 792 | bool SkDiffuseLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 793 | GrTexture* texture) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 794 | if (stage) { |
| 795 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 796 | *stage = SkNEW_ARGS(GrDiffuseLightingEffect, (texture, light(), scale, kd())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 797 | } |
| 798 | return true; |
| 799 | } |
| 800 | |
| 801 | /////////////////////////////////////////////////////////////////////////////// |
| 802 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 803 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 804 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 805 | fKS(ks), |
| 806 | fShininess(shininess) |
| 807 | { |
| 808 | } |
| 809 | |
| 810 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 811 | : INHERITED(buffer) |
| 812 | { |
| 813 | fKS = buffer.readScalar(); |
| 814 | fShininess = buffer.readScalar(); |
| 815 | } |
| 816 | |
| 817 | void SkSpecularLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 818 | this->INHERITED::flatten(buffer); |
| 819 | buffer.writeScalar(fKS); |
| 820 | buffer.writeScalar(fShininess); |
| 821 | } |
| 822 | |
| 823 | bool SkSpecularLightingImageFilter::onFilterImage(Proxy*, |
| 824 | const SkBitmap& src, |
| 825 | const SkMatrix&, |
| 826 | SkBitmap* dst, |
| 827 | SkIPoint*) { |
| 828 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 829 | return false; |
| 830 | } |
| 831 | SkAutoLockPixels alp(src); |
| 832 | if (!src.getPixels()) { |
| 833 | return false; |
| 834 | } |
| 835 | if (src.width() < 2 || src.height() < 2) { |
| 836 | return false; |
| 837 | } |
| 838 | dst->setConfig(src.config(), src.width(), src.height()); |
| 839 | dst->allocPixels(); |
| 840 | |
| 841 | SpecularLightingType lightingType(fKS, fShininess); |
| 842 | switch (light()->type()) { |
| 843 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 844 | lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 845 | break; |
| 846 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 847 | lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 848 | break; |
| 849 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 850 | lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 851 | break; |
| 852 | } |
| 853 | return true; |
| 854 | } |
| 855 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 856 | bool SkSpecularLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 857 | GrTexture* texture) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 858 | if (stage) { |
| 859 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 860 | *stage = SkNEW_ARGS(GrSpecularLightingEffect, (texture, light(), scale, ks(), shininess())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 861 | } |
| 862 | return true; |
| 863 | } |
| 864 | |
| 865 | /////////////////////////////////////////////////////////////////////////////// |
| 866 | |
| 867 | class GrGLLightingEffect : public GrGLProgramStage { |
| 868 | public: |
| 869 | GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 870 | const GrCustomStage& stage); |
| 871 | virtual ~GrGLLightingEffect(); |
| 872 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 873 | virtual void setupVariables(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 874 | int stage) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 875 | virtual void emitVS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 876 | const char* vertexCoords) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 877 | virtual void emitFS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 878 | const char* outputColor, |
| 879 | const char* inputColor, |
| 880 | const char* samplerName) SK_OVERRIDE; |
| 881 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 882 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) = 0; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 883 | |
| 884 | static inline StageKey GenKey(const GrCustomStage& s); |
| 885 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 886 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 887 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 888 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 889 | int stageNum) SK_OVERRIDE; |
| 890 | |
| 891 | private: |
| 892 | typedef GrGLProgramStage INHERITED; |
| 893 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 894 | UniformHandle fImageIncrementUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 895 | UniformHandle fSurfaceScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 896 | GrGLLight* fLight; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 897 | }; |
| 898 | |
| 899 | /////////////////////////////////////////////////////////////////////////////// |
| 900 | |
| 901 | class GrGLDiffuseLightingEffect : public GrGLLightingEffect { |
| 902 | public: |
| 903 | GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 904 | const GrCustomStage& stage); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 905 | virtual void setupVariables(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 906 | int stage) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 907 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 908 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 909 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 910 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 911 | int stageNum) SK_OVERRIDE; |
| 912 | |
| 913 | private: |
| 914 | typedef GrGLLightingEffect INHERITED; |
| 915 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 916 | UniformHandle fKDUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 917 | }; |
| 918 | |
| 919 | /////////////////////////////////////////////////////////////////////////////// |
| 920 | |
| 921 | class GrGLSpecularLightingEffect : public GrGLLightingEffect { |
| 922 | public: |
| 923 | GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 924 | const GrCustomStage& stage); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 925 | virtual void setupVariables(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 926 | int stage) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 927 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 928 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 929 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 930 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 931 | int stageNum) SK_OVERRIDE; |
| 932 | |
| 933 | private: |
| 934 | typedef GrGLLightingEffect INHERITED; |
| 935 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 936 | UniformHandle fKSUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 937 | UniformHandle fShininessUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 938 | }; |
| 939 | |
| 940 | /////////////////////////////////////////////////////////////////////////////// |
| 941 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 942 | GrLightingEffect::GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale) |
| 943 | : GrSingleTextureEffect(texture) |
| 944 | , fLight(light) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 945 | , fSurfaceScale(surfaceScale) { |
| 946 | fLight->ref(); |
| 947 | } |
| 948 | |
| 949 | GrLightingEffect::~GrLightingEffect() { |
| 950 | fLight->unref(); |
| 951 | } |
| 952 | |
| 953 | bool GrLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 954 | const GrLightingEffect& s = |
| 955 | static_cast<const GrLightingEffect&>(sBase); |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 956 | return INHERITED::isEqual(sBase) && |
| 957 | fLight->isEqual(*s.fLight) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 958 | fSurfaceScale == s.fSurfaceScale; |
| 959 | } |
| 960 | |
| 961 | /////////////////////////////////////////////////////////////////////////////// |
| 962 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 963 | GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 964 | : INHERITED(texture, light, surfaceScale), fKD(kd) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 965 | } |
| 966 | |
| 967 | const GrProgramStageFactory& GrDiffuseLightingEffect::getFactory() const { |
| 968 | return GrTProgramStageFactory<GrDiffuseLightingEffect>::getInstance(); |
| 969 | } |
| 970 | |
| 971 | bool GrDiffuseLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 972 | const GrDiffuseLightingEffect& s = |
| 973 | static_cast<const GrDiffuseLightingEffect&>(sBase); |
| 974 | return INHERITED::isEqual(sBase) && |
| 975 | this->kd() == s.kd(); |
| 976 | } |
| 977 | |
| 978 | /////////////////////////////////////////////////////////////////////////////// |
| 979 | |
| 980 | GrGLLightingEffect::GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 981 | const GrCustomStage& stage) |
| 982 | : GrGLProgramStage(factory) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 983 | , fImageIncrementUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 984 | , fSurfaceScaleUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 985 | const GrLightingEffect& m = static_cast<const GrLightingEffect&>(stage); |
| 986 | fLight = m.light()->createGLLight(); |
| 987 | } |
| 988 | |
| 989 | GrGLLightingEffect::~GrGLLightingEffect() { |
| 990 | delete fLight; |
| 991 | } |
| 992 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 993 | void GrGLLightingEffect::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 994 | fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 995 | kVec2f_GrSLType, |
| 996 | "uImageIncrement", stage); |
| 997 | fSurfaceScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 998 | kFloat_GrSLType, |
| 999 | "uSurfaceScale", stage); |
| 1000 | fLight->setupVariables(builder, stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1001 | } |
| 1002 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1003 | void GrGLLightingEffect::emitVS(GrGLShaderBuilder* builder, |
| 1004 | const char* vertexCoords) { |
| 1005 | fLight->emitVS(&builder->fVSCode); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1006 | } |
| 1007 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1008 | void GrGLLightingEffect::emitFS(GrGLShaderBuilder* builder, |
| 1009 | const char* outputColor, |
| 1010 | const char* inputColor, |
| 1011 | const char* samplerName) { |
| 1012 | SkString* code = &builder->fFSCode; |
| 1013 | SkString* funcs = &builder->fFSFunctions; |
| 1014 | fLight->emitFuncs(builder, funcs); |
| 1015 | this->emitLightFunc(builder, funcs); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1016 | 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] | 1017 | 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] | 1018 | funcs->appendf("}\n"); |
| 1019 | funcs->appendf("vec3 pointToNormal(float x, float y, float scale) {\n"); |
| 1020 | funcs->appendf("\treturn normalize(vec3(-x * scale, -y * scale, 1));\n"); |
| 1021 | funcs->appendf("}\n"); |
| 1022 | funcs->append("\n\ |
| 1023 | vec3 interiorNormal(float m[9], float surfaceScale) {\n\ |
| 1024 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], 0.25),\n\ |
| 1025 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], 0.25),\n\ |
| 1026 | surfaceScale);\n}\n"); |
| 1027 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1028 | code->appendf("\t\tvec2 coord = %s;\n", builder->fSampleCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1029 | code->appendf("\t\tfloat m[9];\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1030 | |
| 1031 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1032 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1033 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1034 | int index = 0; |
| 1035 | for (int dy = -1; dy <= 1; dy++) { |
| 1036 | for (int dx = -1; dx <= 1; dx++) { |
| 1037 | SkString texCoords; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1038 | texCoords.appendf("coord + vec2(%d, %d) * %s", dx, dy, imgInc); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1039 | code->appendf("\t\tm[%d] = ", index++); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1040 | builder->emitTextureLookup(samplerName, texCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1041 | code->appendf(".a;\n"); |
| 1042 | } |
| 1043 | } |
| 1044 | code->appendf("\t\tvec3 surfaceToLight = "); |
| 1045 | SkString arg; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1046 | arg.appendf("%s * m[4]", surfScale); |
| 1047 | fLight->emitSurfaceToLight(builder, code, arg.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1048 | code->appendf(";\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1049 | code->appendf("\t\t%s = light(interiorNormal(m, %s), surfaceToLight, ", outputColor, surfScale); |
| 1050 | fLight->emitLightColor(builder, code, "surfaceToLight"); |
| 1051 | code->appendf(")%s;\n", builder->fModulate.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | GrGLProgramStage::StageKey GrGLLightingEffect::GenKey( |
| 1055 | const GrCustomStage& s) { |
| 1056 | return static_cast<const GrLightingEffect&>(s).light()->type(); |
| 1057 | } |
| 1058 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1059 | void GrGLLightingEffect::setData(const GrGLUniformManager& uman, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1060 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1061 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1062 | int stageNum) { |
| 1063 | const GrLightingEffect& effect = |
| 1064 | static_cast<const GrLightingEffect&>(data); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1065 | GrGLTexture* texture = static_cast<GrGLTexture*>(data.texture(0)); |
| 1066 | float ySign = texture->orientation() == GrGLTexture::kTopDown_Orientation ? -1.0f : 1.0f; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1067 | uman.set2f(fImageIncrementUni, 1.0f / texture->width(), ySign / texture->height()); |
| 1068 | uman.set1f(fSurfaceScaleUni, effect.surfaceScale()); |
| 1069 | fLight->setData(uman, rt, effect.light()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1070 | } |
| 1071 | |
| 1072 | /////////////////////////////////////////////////////////////////////////////// |
| 1073 | |
| 1074 | /////////////////////////////////////////////////////////////////////////////// |
| 1075 | |
| 1076 | GrGLDiffuseLightingEffect::GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 1077 | const GrCustomStage& stage) |
| 1078 | : INHERITED(factory, stage) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1079 | , fKDUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1080 | } |
| 1081 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1082 | void GrGLDiffuseLightingEffect::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1083 | INHERITED::setupVariables(builder, stage); |
| 1084 | fKDUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, "uKD", |
| 1085 | stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1086 | } |
| 1087 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1088 | void GrGLDiffuseLightingEffect::emitLightFunc(const GrGLShaderBuilder* builder, SkString* funcs) { |
| 1089 | const char* kd = builder->getUniformCStr(fKDUni); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1090 | funcs->appendf("vec4 light(vec3 normal, vec3 surfaceToLight, vec3 lightColor) {\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1091 | funcs->appendf("\tfloat colorScale = %s * dot(normal, surfaceToLight);\n", kd); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1092 | 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] | 1093 | funcs->appendf("}\n"); |
| 1094 | } |
| 1095 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1096 | void GrGLDiffuseLightingEffect::setData(const GrGLUniformManager& uman, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1097 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1098 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1099 | int stageNum) { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1100 | INHERITED::setData(uman, data, rt, stageNum); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1101 | const GrDiffuseLightingEffect& effect = |
| 1102 | static_cast<const GrDiffuseLightingEffect&>(data); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1103 | uman.set1f(fKDUni, effect.kd()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1104 | } |
| 1105 | |
| 1106 | /////////////////////////////////////////////////////////////////////////////// |
| 1107 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1108 | GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 1109 | : INHERITED(texture, light, surfaceScale), |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1110 | fKS(ks), |
| 1111 | fShininess(shininess) { |
| 1112 | } |
| 1113 | |
| 1114 | const GrProgramStageFactory& GrSpecularLightingEffect::getFactory() const { |
| 1115 | return GrTProgramStageFactory<GrSpecularLightingEffect>::getInstance(); |
| 1116 | } |
| 1117 | |
| 1118 | bool GrSpecularLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1119 | const GrSpecularLightingEffect& s = |
| 1120 | static_cast<const GrSpecularLightingEffect&>(sBase); |
| 1121 | return INHERITED::isEqual(sBase) && |
| 1122 | this->ks() == s.ks() && |
| 1123 | this->shininess() == s.shininess(); |
| 1124 | } |
| 1125 | |
| 1126 | /////////////////////////////////////////////////////////////////////////////// |
| 1127 | |
| 1128 | GrGLSpecularLightingEffect::GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 1129 | const GrCustomStage& stage) |
| 1130 | : GrGLLightingEffect(factory, stage) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1131 | , fKSUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1132 | , fShininessUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1133 | } |
| 1134 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1135 | void GrGLSpecularLightingEffect::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1136 | INHERITED::setupVariables(builder, stage); |
| 1137 | fKSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1138 | kFloat_GrSLType, "uKS", stage); |
| 1139 | fShininessUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1140 | kFloat_GrSLType, "uShininess", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1141 | } |
| 1142 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1143 | void GrGLSpecularLightingEffect::emitLightFunc(const GrGLShaderBuilder* builder, SkString* funcs) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1144 | funcs->appendf("vec4 light(vec3 normal, vec3 surfaceToLight, vec3 lightColor) {\n"); |
| 1145 | funcs->appendf("\tvec3 halfDir = vec3(normalize(surfaceToLight + vec3(0, 0, 1)));\n"); |
| 1146 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1147 | const char* ks = builder->getUniformCStr(fKSUni); |
| 1148 | const char* shininess = builder->getUniformCStr(fShininessUni); |
| 1149 | 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] | 1150 | 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] | 1151 | funcs->appendf("}\n"); |
| 1152 | } |
| 1153 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1154 | void GrGLSpecularLightingEffect::setData(const GrGLUniformManager& uman, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1155 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1156 | const GrRenderTarget* rt, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1157 | int stageNum) { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1158 | INHERITED::setData(uman, data, rt, stageNum); |
| 1159 | const GrSpecularLightingEffect& effect = static_cast<const GrSpecularLightingEffect&>(data); |
| 1160 | uman.set1f(fKSUni, effect.ks()); |
| 1161 | uman.set1f(fShininessUni, effect.shininess()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | /////////////////////////////////////////////////////////////////////////////// |
| 1165 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1166 | void GrGLLight::emitLightColor(const GrGLShaderBuilder* builder, |
| 1167 | SkString* out, |
| 1168 | const char *surfaceToLight) const { |
| 1169 | const char* color = builder->getUniformCStr(fColorUni); |
| 1170 | out->append(color); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1171 | } |
| 1172 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1173 | void GrGLLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1174 | fColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1175 | kVec3f_GrSLType, "uLightColor", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1178 | void GrGLLight::setData(const GrGLUniformManager& uman, |
| 1179 | const GrRenderTarget* rt, |
| 1180 | const SkLight* light) const { |
| 1181 | setUniformPoint3(uman, fColorUni, light->color() * SkScalarInvert(SkIntToScalar(255))); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1182 | } |
| 1183 | |
| 1184 | GrGLLight* SkDistantLight::createGLLight() const { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 1185 | return SkNEW(GrGLDistantLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1186 | } |
| 1187 | |
| 1188 | /////////////////////////////////////////////////////////////////////////////// |
| 1189 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1190 | void GrGLDistantLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1191 | INHERITED::setupVariables(builder, stage); |
| 1192 | fDirectionUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1193 | "uLightDirection", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1194 | } |
| 1195 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1196 | void GrGLDistantLight::setData(const GrGLUniformManager& uman, |
| 1197 | const GrRenderTarget* rt, |
| 1198 | const SkLight* light) const { |
| 1199 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1200 | SkASSERT(light->type() == SkLight::kDistant_LightType); |
| 1201 | const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1202 | setUniformNormal3(uman, fDirectionUni, distantLight->direction()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1203 | } |
| 1204 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1205 | void GrGLDistantLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1206 | SkString* out, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1207 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1208 | const char* dir = builder->getUniformCStr(fDirectionUni); |
| 1209 | out->append(dir); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | /////////////////////////////////////////////////////////////////////////////// |
| 1213 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1214 | void GrGLPointLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1215 | INHERITED::setupVariables(builder, stage); |
| 1216 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1217 | "uLightLocation", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1220 | void GrGLPointLight::setData(const GrGLUniformManager& uman, |
| 1221 | const GrRenderTarget* rt, |
| 1222 | const SkLight* light) const { |
| 1223 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1224 | SkASSERT(light->type() == SkLight::kPoint_LightType); |
| 1225 | const SkPointLight* pointLight = static_cast<const SkPointLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1226 | setUniformPoint3FlipY(uman, fLocationUni, pointLight->location(), rt->height()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1227 | } |
| 1228 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1229 | void GrGLPointLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1230 | } |
| 1231 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1232 | void GrGLPointLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1233 | SkString* out, |
| 1234 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1235 | const char* loc = builder->getUniformCStr(fLocationUni); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1236 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", loc, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1237 | } |
| 1238 | |
| 1239 | /////////////////////////////////////////////////////////////////////////////// |
| 1240 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1241 | void GrGLSpotLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1242 | INHERITED::setupVariables(builder, stage); |
| 1243 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1244 | kVec3f_GrSLType, "uLightLocation", stage); |
| 1245 | fExponentUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1246 | kFloat_GrSLType, "uExponent", stage); |
| 1247 | fCosInnerConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1248 | kFloat_GrSLType, "uCosInnerConeAngle", stage); |
| 1249 | fCosOuterConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1250 | kFloat_GrSLType, "uCosOuterConeAngle", stage); |
| 1251 | fConeScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1252 | kFloat_GrSLType, "uConeScale", stage); |
| 1253 | fSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1254 | kVec3f_GrSLType, "uS", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1255 | } |
| 1256 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1257 | void GrGLSpotLight::setData(const GrGLUniformManager& uman, |
| 1258 | const GrRenderTarget* rt, |
| 1259 | const SkLight* light) const { |
| 1260 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1261 | SkASSERT(light->type() == SkLight::kSpot_LightType); |
| 1262 | const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame^] | 1263 | setUniformPoint3FlipY(uman, fLocationUni, spotLight->location(), rt->height()); |
| 1264 | uman.set1f(fExponentUni, spotLight->specularExponent()); |
| 1265 | uman.set1f(fCosInnerConeAngleUni, spotLight->cosInnerConeAngle()); |
| 1266 | uman.set1f(fCosOuterConeAngleUni, spotLight->cosOuterConeAngle()); |
| 1267 | uman.set1f(fConeScaleUni, spotLight->coneScale()); |
| 1268 | setUniformNormal3(uman, fSUni, spotLight->s()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1269 | } |
| 1270 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1271 | void GrGLSpotLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1272 | } |
| 1273 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1274 | void GrGLSpotLight::emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const { |
| 1275 | const char* exponent = builder->getUniformCStr(fExponentUni); |
| 1276 | const char* cosInner = builder->getUniformCStr(fCosInnerConeAngleUni); |
| 1277 | const char* cosOuter = builder->getUniformCStr(fCosOuterConeAngleUni); |
| 1278 | const char* coneScale = builder->getUniformCStr(fConeScaleUni); |
| 1279 | const char* s = builder->getUniformCStr(fSUni); |
| 1280 | const char* color = builder->getUniformCStr(fColorUni); |
| 1281 | |
| 1282 | out->appendf("vec3 lightColor(vec3 surfaceToLight) {\n"); |
| 1283 | out->appendf("\tfloat cosAngle = -dot(surfaceToLight, %s);\n", s); |
| 1284 | out->appendf("\tif (cosAngle < %s) {\n", cosOuter); |
| 1285 | out->appendf("\t\treturn vec3(0);\n"); |
| 1286 | out->appendf("\t}\n"); |
| 1287 | out->appendf("\tfloat scale = pow(cosAngle, %s);\n", exponent); |
| 1288 | out->appendf("\tif (cosAngle < %s) {\n", cosInner); |
| 1289 | out->appendf("\t\treturn %s * scale * (cosAngle - %s) * %s;\n", color, cosOuter, coneScale); |
| 1290 | out->appendf("\t}\n"); |
| 1291 | out->appendf("\treturn %s;\n", color); |
| 1292 | out->appendf("}\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1293 | } |
| 1294 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1295 | void GrGLSpotLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1296 | SkString* out, |
| 1297 | const char* z) const { |
| 1298 | const char* location= builder->getUniformCStr(fLocationUni); |
| 1299 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", location, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1300 | } |
| 1301 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1302 | void GrGLSpotLight::emitLightColor(const GrGLShaderBuilder* builder, |
| 1303 | SkString* out, const char *surfaceToLight) const { |
| 1304 | out->appendf("lightColor(%s)", surfaceToLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1305 | } |
| 1306 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 1307 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter) |
| 1308 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter) |
| 1309 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter) |
| 1310 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight) |
| 1311 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight) |
| 1312 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight) |
| 1313 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |