senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkLightingImageFilter.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkColorPriv.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 11 | #include "SkFlattenableBuffers.h" |
| 12 | #include "SkOrderedReadBuffer.h" |
| 13 | #include "SkOrderedWriteBuffer.h" |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 14 | #include "SkTypes.h" |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 15 | |
| 16 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 17 | #include "GrProgramStageFactory.h" |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 18 | #include "effects/GrSingleTextureEffect.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 19 | #include "gl/GrGLProgramStage.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 20 | #include "gl/GrGLTexture.h" |
| 21 | #include "GrCustomStage.h" |
| 22 | |
| 23 | class GrGLDiffuseLightingEffect; |
| 24 | class GrGLSpecularLightingEffect; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 25 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 26 | // For brevity |
| 27 | typedef GrGLUniformManager::UniformHandle UniformHandle; |
| 28 | static const UniformHandle kInvalidUniformHandle = GrGLUniformManager::kInvalidUniformHandle; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 29 | #endif |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 30 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 31 | namespace { |
| 32 | |
| 33 | const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3)); |
| 34 | const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3)); |
| 35 | const SkScalar gOneHalf = SkFloatToScalar(0.5f); |
| 36 | const SkScalar gOneQuarter = SkFloatToScalar(0.25f); |
| 37 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 38 | #if SK_SUPPORT_GPU |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 39 | void setUniformPoint3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
bsalomon@google.com | b9119a6 | 2012-07-25 17:55:26 +0000 | [diff] [blame] | 40 | GR_STATIC_ASSERT(sizeof(SkPoint3) == 3 * sizeof(GrGLfloat)); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 41 | uman.set3fv(uni, 0, 1, &point.fX); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 42 | } |
| 43 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 44 | void setUniformNormal3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
| 45 | setUniformPoint3(uman, uni, SkPoint3(point.fX, -point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 46 | } |
| 47 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 48 | void setUniformPoint3FlipY(const GrGLUniformManager& uman, |
| 49 | UniformHandle uni, |
| 50 | const SkPoint3& point, |
| 51 | int height) { |
| 52 | setUniformPoint3(uman, uni, SkPoint3(point.fX, height-point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 53 | } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 54 | #endif |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 55 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 56 | // Shift matrix components to the left, as we advance pixels to the right. |
| 57 | inline void shiftMatrixLeft(int m[9]) { |
| 58 | m[0] = m[1]; |
| 59 | m[3] = m[4]; |
| 60 | m[6] = m[7]; |
| 61 | m[1] = m[2]; |
| 62 | m[4] = m[5]; |
| 63 | m[7] = m[8]; |
| 64 | } |
| 65 | |
| 66 | class DiffuseLightingType { |
| 67 | public: |
| 68 | DiffuseLightingType(SkScalar kd) |
| 69 | : fKD(kd) {} |
| 70 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 71 | SkScalar colorScale = SkScalarMul(fKD, normal.dot(surfaceTolight)); |
| 72 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 73 | SkPoint3 color(lightColor * colorScale); |
| 74 | return SkPackARGB32(255, |
| 75 | SkScalarFloorToInt(color.fX), |
| 76 | SkScalarFloorToInt(color.fY), |
| 77 | SkScalarFloorToInt(color.fZ)); |
| 78 | } |
| 79 | private: |
| 80 | SkScalar fKD; |
| 81 | }; |
| 82 | |
| 83 | class SpecularLightingType { |
| 84 | public: |
| 85 | SpecularLightingType(SkScalar ks, SkScalar shininess) |
| 86 | : fKS(ks), fShininess(shininess) {} |
| 87 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 88 | SkPoint3 halfDir(surfaceTolight); |
| 89 | halfDir.fZ += SK_Scalar1; // eye position is always (0, 0, 1) |
| 90 | halfDir.normalize(); |
| 91 | SkScalar colorScale = SkScalarMul(fKS, |
| 92 | SkScalarPow(normal.dot(halfDir), fShininess)); |
| 93 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 94 | SkPoint3 color(lightColor * colorScale); |
| 95 | return SkPackARGB32(SkScalarFloorToInt(color.maxComponent()), |
| 96 | SkScalarFloorToInt(color.fX), |
| 97 | SkScalarFloorToInt(color.fY), |
| 98 | SkScalarFloorToInt(color.fZ)); |
| 99 | } |
| 100 | private: |
| 101 | SkScalar fKS; |
| 102 | SkScalar fShininess; |
| 103 | }; |
| 104 | |
| 105 | inline SkScalar sobel(int a, int b, int c, int d, int e, int f, SkScalar scale) { |
| 106 | return SkScalarMul(SkIntToScalar(-a + b - 2 * c + 2 * d -e + f), scale); |
| 107 | } |
| 108 | |
| 109 | inline SkPoint3 pointToNormal(SkScalar x, SkScalar y, SkScalar surfaceScale) { |
| 110 | SkPoint3 vector(SkScalarMul(-x, surfaceScale), |
| 111 | SkScalarMul(-y, surfaceScale), |
| 112 | SK_Scalar1); |
| 113 | vector.normalize(); |
| 114 | return vector; |
| 115 | } |
| 116 | |
| 117 | inline SkPoint3 topLeftNormal(int m[9], SkScalar surfaceScale) { |
| 118 | return pointToNormal(sobel(0, 0, m[4], m[5], m[7], m[8], gTwoThirds), |
| 119 | sobel(0, 0, m[4], m[7], m[5], m[8], gTwoThirds), |
| 120 | surfaceScale); |
| 121 | } |
| 122 | |
| 123 | inline SkPoint3 topNormal(int m[9], SkScalar surfaceScale) { |
| 124 | return pointToNormal(sobel( 0, 0, m[3], m[5], m[6], m[8], gOneThird), |
| 125 | sobel(m[3], m[6], m[4], m[7], m[5], m[8], gOneHalf), |
| 126 | surfaceScale); |
| 127 | } |
| 128 | |
| 129 | inline SkPoint3 topRightNormal(int m[9], SkScalar surfaceScale) { |
| 130 | return pointToNormal(sobel( 0, 0, m[3], m[4], m[6], m[7], gTwoThirds), |
| 131 | sobel(m[3], m[6], m[4], m[7], 0, 0, gTwoThirds), |
| 132 | surfaceScale); |
| 133 | } |
| 134 | |
| 135 | inline SkPoint3 leftNormal(int m[9], SkScalar surfaceScale) { |
| 136 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], m[7], m[8], gOneHalf), |
| 137 | sobel( 0, 0, m[1], m[7], m[2], m[8], gOneThird), |
| 138 | surfaceScale); |
| 139 | } |
| 140 | |
| 141 | |
| 142 | inline SkPoint3 interiorNormal(int m[9], SkScalar surfaceScale) { |
| 143 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], gOneQuarter), |
| 144 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], gOneQuarter), |
| 145 | surfaceScale); |
| 146 | } |
| 147 | |
| 148 | inline SkPoint3 rightNormal(int m[9], SkScalar surfaceScale) { |
| 149 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], m[6], m[7], gOneHalf), |
| 150 | sobel(m[0], m[6], m[1], m[7], 0, 0, gOneThird), |
| 151 | surfaceScale); |
| 152 | } |
| 153 | |
| 154 | inline SkPoint3 bottomLeftNormal(int m[9], SkScalar surfaceScale) { |
| 155 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], 0, 0, gTwoThirds), |
| 156 | sobel( 0, 0, m[1], m[4], m[2], m[5], gTwoThirds), |
| 157 | surfaceScale); |
| 158 | } |
| 159 | |
| 160 | inline SkPoint3 bottomNormal(int m[9], SkScalar surfaceScale) { |
| 161 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], 0, 0, gOneThird), |
| 162 | sobel(m[0], m[3], m[1], m[4], m[2], m[5], gOneHalf), |
| 163 | surfaceScale); |
| 164 | } |
| 165 | |
| 166 | inline SkPoint3 bottomRightNormal(int m[9], SkScalar surfaceScale) { |
| 167 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], 0, 0, gTwoThirds), |
| 168 | sobel(m[0], m[3], m[1], m[4], 0, 0, gTwoThirds), |
| 169 | surfaceScale); |
| 170 | } |
| 171 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 172 | 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] | 173 | const LightType* l = static_cast<const LightType*>(light); |
| 174 | int y = 0; |
| 175 | { |
| 176 | const SkPMColor* row1 = src.getAddr32(0, 0); |
| 177 | const SkPMColor* row2 = src.getAddr32(0, 1); |
| 178 | SkPMColor* dptr = dst->getAddr32(0, 0); |
| 179 | int m[9]; |
| 180 | int x = 0; |
| 181 | m[4] = SkGetPackedA32(*row1++); |
| 182 | m[5] = SkGetPackedA32(*row1++); |
| 183 | m[7] = SkGetPackedA32(*row2++); |
| 184 | m[8] = SkGetPackedA32(*row2++); |
| 185 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 186 | *dptr++ = lightingType.light(topLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 187 | for (x = 1; x < src.width() - 1; ++x) |
| 188 | { |
| 189 | shiftMatrixLeft(m); |
| 190 | m[5] = SkGetPackedA32(*row1++); |
| 191 | m[8] = SkGetPackedA32(*row2++); |
| 192 | surfaceToLight = l->surfaceToLight(x, 0, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 193 | *dptr++ = lightingType.light(topNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 194 | } |
| 195 | shiftMatrixLeft(m); |
| 196 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 197 | *dptr++ = lightingType.light(topRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | for (++y; y < src.height() - 1; ++y) { |
| 201 | const SkPMColor* row0 = src.getAddr32(0, y - 1); |
| 202 | const SkPMColor* row1 = src.getAddr32(0, y); |
| 203 | const SkPMColor* row2 = src.getAddr32(0, y + 1); |
| 204 | SkPMColor* dptr = dst->getAddr32(0, y); |
| 205 | int m[9]; |
| 206 | int x = 0; |
| 207 | m[1] = SkGetPackedA32(*row0++); |
| 208 | m[2] = SkGetPackedA32(*row0++); |
| 209 | m[4] = SkGetPackedA32(*row1++); |
| 210 | m[5] = SkGetPackedA32(*row1++); |
| 211 | m[7] = SkGetPackedA32(*row2++); |
| 212 | m[8] = SkGetPackedA32(*row2++); |
| 213 | SkPoint3 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(leftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 215 | for (x = 1; x < src.width() - 1; ++x) { |
| 216 | shiftMatrixLeft(m); |
| 217 | m[2] = SkGetPackedA32(*row0++); |
| 218 | m[5] = SkGetPackedA32(*row1++); |
| 219 | m[8] = SkGetPackedA32(*row2++); |
| 220 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 221 | *dptr++ = lightingType.light(interiorNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 222 | } |
| 223 | shiftMatrixLeft(m); |
| 224 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 225 | *dptr++ = lightingType.light(rightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | { |
| 229 | const SkPMColor* row0 = src.getAddr32(0, src.height() - 2); |
| 230 | const SkPMColor* row1 = src.getAddr32(0, src.height() - 1); |
| 231 | int x = 0; |
| 232 | SkPMColor* dptr = dst->getAddr32(0, src.height() - 1); |
| 233 | int m[9]; |
| 234 | m[1] = SkGetPackedA32(*row0++); |
| 235 | m[2] = SkGetPackedA32(*row0++); |
| 236 | m[4] = SkGetPackedA32(*row1++); |
| 237 | m[5] = SkGetPackedA32(*row1++); |
| 238 | SkPoint3 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(bottomLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 240 | for (x = 1; x < src.width() - 1; ++x) |
| 241 | { |
| 242 | shiftMatrixLeft(m); |
| 243 | m[2] = SkGetPackedA32(*row0++); |
| 244 | m[5] = SkGetPackedA32(*row1++); |
| 245 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 246 | *dptr++ = lightingType.light(bottomNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 247 | } |
| 248 | shiftMatrixLeft(m); |
| 249 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 250 | *dptr++ = lightingType.light(bottomRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 251 | } |
| 252 | } |
| 253 | |
| 254 | SkPoint3 readPoint3(SkFlattenableReadBuffer& buffer) { |
| 255 | SkPoint3 point; |
| 256 | point.fX = buffer.readScalar(); |
| 257 | point.fY = buffer.readScalar(); |
| 258 | point.fZ = buffer.readScalar(); |
| 259 | return point; |
| 260 | }; |
| 261 | |
| 262 | void writePoint3(const SkPoint3& point, SkFlattenableWriteBuffer& buffer) { |
| 263 | buffer.writeScalar(point.fX); |
| 264 | buffer.writeScalar(point.fY); |
| 265 | buffer.writeScalar(point.fZ); |
| 266 | }; |
| 267 | |
| 268 | class SkDiffuseLightingImageFilter : public SkLightingImageFilter { |
| 269 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 270 | SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 271 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter) |
| 272 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 273 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 274 | SkScalar kd() const { return fKD; } |
| 275 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 276 | protected: |
| 277 | explicit SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 278 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 279 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 280 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 281 | |
| 282 | |
| 283 | private: |
| 284 | typedef SkLightingImageFilter INHERITED; |
| 285 | SkScalar fKD; |
| 286 | }; |
| 287 | |
| 288 | class SkSpecularLightingImageFilter : public SkLightingImageFilter { |
| 289 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 290 | SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 291 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter) |
| 292 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 293 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 294 | SkScalar ks() const { return fKS; } |
| 295 | SkScalar shininess() const { return fShininess; } |
| 296 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 297 | protected: |
| 298 | explicit SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 299 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 300 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 301 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 302 | |
| 303 | private: |
| 304 | typedef SkLightingImageFilter INHERITED; |
| 305 | SkScalar fKS; |
| 306 | SkScalar fShininess; |
| 307 | }; |
| 308 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 309 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 310 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 311 | class GrLightingEffect : public GrSingleTextureEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 312 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 313 | GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 314 | virtual ~GrLightingEffect(); |
| 315 | |
| 316 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 317 | |
| 318 | const SkLight* light() const { return fLight; } |
| 319 | SkScalar surfaceScale() const { return fSurfaceScale; } |
| 320 | private: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 321 | typedef GrSingleTextureEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 322 | const SkLight* fLight; |
| 323 | SkScalar fSurfaceScale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 324 | }; |
| 325 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 326 | class GrDiffuseLightingEffect : public GrLightingEffect { |
| 327 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 328 | GrDiffuseLightingEffect(GrTexture* texture, |
| 329 | const SkLight* light, |
| 330 | SkScalar surfaceScale, |
| 331 | SkScalar kd); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 332 | |
| 333 | static const char* Name() { return "DiffuseLighting"; } |
| 334 | |
| 335 | typedef GrGLDiffuseLightingEffect GLProgramStage; |
| 336 | |
| 337 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 338 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 339 | SkScalar kd() const { return fKD; } |
| 340 | private: |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 341 | GR_DECLARE_CUSTOM_STAGE_TEST; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 342 | typedef GrLightingEffect INHERITED; |
| 343 | SkScalar fKD; |
| 344 | }; |
| 345 | |
| 346 | class GrSpecularLightingEffect : public GrLightingEffect { |
| 347 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 348 | GrSpecularLightingEffect(GrTexture* texture, |
| 349 | const SkLight* light, |
| 350 | SkScalar surfaceScale, |
| 351 | SkScalar ks, |
| 352 | SkScalar shininess); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 353 | |
| 354 | static const char* Name() { return "SpecularLighting"; } |
| 355 | |
| 356 | typedef GrGLSpecularLightingEffect GLProgramStage; |
| 357 | |
| 358 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 359 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 360 | SkScalar ks() const { return fKS; } |
| 361 | SkScalar shininess() const { return fShininess; } |
| 362 | |
| 363 | private: |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 364 | GR_DECLARE_CUSTOM_STAGE_TEST; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 365 | typedef GrLightingEffect INHERITED; |
| 366 | SkScalar fKS; |
| 367 | SkScalar fShininess; |
| 368 | }; |
| 369 | |
| 370 | /////////////////////////////////////////////////////////////////////////////// |
| 371 | |
| 372 | class GrGLLight { |
| 373 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 374 | virtual ~GrGLLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 375 | virtual void setupVariables(GrGLShaderBuilder* builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 376 | virtual void emitVS(SkString* out) const {} |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 377 | virtual void emitFuncs(GrGLShaderBuilder* builder) {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 378 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 379 | SkString* out, |
| 380 | const char* z) const = 0; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 381 | virtual void emitLightColor(GrGLShaderBuilder*, |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 382 | const char *surfaceToLight) const; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 383 | 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] | 384 | |
| 385 | private: |
| 386 | typedef SkRefCnt INHERITED; |
| 387 | |
| 388 | protected: |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 389 | UniformHandle fColorUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 390 | }; |
| 391 | |
| 392 | /////////////////////////////////////////////////////////////////////////////// |
| 393 | |
| 394 | class GrGLDistantLight : public GrGLLight { |
| 395 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 396 | virtual ~GrGLDistantLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 397 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 398 | 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] | 399 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 400 | SkString* out, |
| 401 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 402 | private: |
| 403 | typedef GrGLLight INHERITED; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 404 | UniformHandle fDirectionUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 405 | }; |
| 406 | |
| 407 | /////////////////////////////////////////////////////////////////////////////// |
| 408 | |
| 409 | class GrGLPointLight : public GrGLLight { |
| 410 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 411 | virtual ~GrGLPointLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 412 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 413 | 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] | 414 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 415 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 416 | SkString* out, |
| 417 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 418 | private: |
| 419 | typedef GrGLLight INHERITED; |
| 420 | SkPoint3 fLocation; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 421 | UniformHandle fLocationUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 422 | }; |
| 423 | |
| 424 | /////////////////////////////////////////////////////////////////////////////// |
| 425 | |
| 426 | class GrGLSpotLight : public GrGLLight { |
| 427 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 428 | virtual ~GrGLSpotLight() {} |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 429 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 430 | 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] | 431 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 432 | virtual void emitFuncs(GrGLShaderBuilder* builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 433 | virtual void emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 434 | SkString* out, |
| 435 | const char* z) const SK_OVERRIDE; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 436 | virtual void emitLightColor(GrGLShaderBuilder*, |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 437 | const char *surfaceToLight) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 438 | |
| 439 | private: |
| 440 | typedef GrGLLight INHERITED; |
| 441 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 442 | SkString fLightColorFunc; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 443 | UniformHandle fLocationUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 444 | UniformHandle fExponentUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 445 | UniformHandle fCosOuterConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 446 | UniformHandle fCosInnerConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 447 | UniformHandle fConeScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 448 | UniformHandle fSUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 449 | }; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 450 | #else |
| 451 | |
| 452 | class GrGLLight; |
| 453 | |
| 454 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 455 | |
| 456 | }; |
| 457 | |
| 458 | /////////////////////////////////////////////////////////////////////////////// |
| 459 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 460 | class SkLight : public SkFlattenable { |
| 461 | public: |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 462 | SK_DECLARE_INST_COUNT(SkLight) |
| 463 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 464 | enum LightType { |
| 465 | kDistant_LightType, |
| 466 | kPoint_LightType, |
| 467 | kSpot_LightType, |
| 468 | }; |
| 469 | virtual LightType type() const = 0; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 470 | const SkPoint3& color() const { return fColor; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 471 | virtual GrGLLight* createGLLight() const = 0; |
| 472 | virtual bool isEqual(const SkLight& other) const { |
| 473 | return fColor == other.fColor; |
| 474 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 475 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 476 | protected: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 477 | SkLight(SkColor color) |
| 478 | : fColor(SkIntToScalar(SkColorGetR(color)), |
| 479 | SkIntToScalar(SkColorGetG(color)), |
| 480 | SkIntToScalar(SkColorGetB(color))) {} |
| 481 | SkLight(SkFlattenableReadBuffer& buffer) |
| 482 | : INHERITED(buffer) { |
| 483 | fColor = readPoint3(buffer); |
| 484 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 485 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 486 | INHERITED::flatten(buffer); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 487 | writePoint3(fColor, buffer); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 488 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 489 | |
| 490 | private: |
| 491 | typedef SkFlattenable INHERITED; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 492 | SkPoint3 fColor; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 493 | }; |
| 494 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 495 | SK_DEFINE_INST_COUNT(SkLight) |
| 496 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 497 | /////////////////////////////////////////////////////////////////////////////// |
| 498 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 499 | class SkDistantLight : public SkLight { |
| 500 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 501 | SkDistantLight(const SkPoint3& direction, SkColor color) |
| 502 | : INHERITED(color), fDirection(direction) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 503 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 504 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 505 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 506 | return fDirection; |
| 507 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 508 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 509 | virtual LightType type() const { return kDistant_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 510 | const SkPoint3& direction() const { return fDirection; } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 511 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
| 512 | #if SK_SUPPORT_GPU |
| 513 | return SkNEW(GrGLDistantLight); |
| 514 | #else |
| 515 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 516 | return NULL; |
| 517 | #endif |
| 518 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 519 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
| 520 | if (other.type() != kDistant_LightType) { |
| 521 | return false; |
| 522 | } |
| 523 | |
| 524 | const SkDistantLight& o = static_cast<const SkDistantLight&>(other); |
| 525 | return INHERITED::isEqual(other) && |
| 526 | fDirection == o.fDirection; |
| 527 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 528 | |
| 529 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight) |
| 530 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 531 | protected: |
| 532 | SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 533 | fDirection = readPoint3(buffer); |
| 534 | } |
| 535 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 536 | INHERITED::flatten(buffer); |
| 537 | writePoint3(fDirection, buffer); |
| 538 | } |
| 539 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 540 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 541 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 542 | SkPoint3 fDirection; |
| 543 | }; |
| 544 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 545 | /////////////////////////////////////////////////////////////////////////////// |
| 546 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 547 | class SkPointLight : public SkLight { |
| 548 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 549 | SkPointLight(const SkPoint3& location, SkColor color) |
| 550 | : INHERITED(color), fLocation(location) {} |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 551 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 552 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 553 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 554 | fLocation.fY - SkIntToScalar(y), |
| 555 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 556 | direction.normalize(); |
| 557 | return direction; |
| 558 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 559 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 560 | virtual LightType type() const { return kPoint_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 561 | const SkPoint3& location() const { return fLocation; } |
| 562 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 563 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 564 | return SkNEW(GrGLPointLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 565 | #else |
| 566 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 567 | return NULL; |
| 568 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 569 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 570 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 571 | if (other.type() != kPoint_LightType) { |
| 572 | return false; |
| 573 | } |
| 574 | const SkPointLight& o = static_cast<const SkPointLight&>(other); |
| 575 | return INHERITED::isEqual(other) && |
| 576 | fLocation == o.fLocation; |
| 577 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 578 | |
| 579 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight) |
| 580 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 581 | protected: |
| 582 | SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 583 | fLocation = readPoint3(buffer); |
| 584 | } |
| 585 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 586 | INHERITED::flatten(buffer); |
| 587 | writePoint3(fLocation, buffer); |
| 588 | } |
| 589 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 590 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 591 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 592 | SkPoint3 fLocation; |
| 593 | }; |
| 594 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 595 | /////////////////////////////////////////////////////////////////////////////// |
| 596 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 597 | class SkSpotLight : public SkLight { |
| 598 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 599 | SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, SkColor color) |
| 600 | : INHERITED(color), |
| 601 | fLocation(location), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 602 | fTarget(target), |
| 603 | fSpecularExponent(specularExponent) |
| 604 | { |
| 605 | fS = target - location; |
| 606 | fS.normalize(); |
| 607 | fCosOuterConeAngle = SkScalarCos(SkDegreesToRadians(cutoffAngle)); |
| 608 | const SkScalar antiAliasThreshold = SkFloatToScalar(0.016f); |
| 609 | fCosInnerConeAngle = fCosOuterConeAngle + antiAliasThreshold; |
| 610 | fConeScale = SkScalarInvert(antiAliasThreshold); |
| 611 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 612 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 613 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 614 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 615 | fLocation.fY - SkIntToScalar(y), |
| 616 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 617 | direction.normalize(); |
| 618 | return direction; |
| 619 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 620 | SkPoint3 lightColor(const SkPoint3& surfaceToLight) const { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 621 | SkScalar cosAngle = -surfaceToLight.dot(fS); |
| 622 | if (cosAngle < fCosOuterConeAngle) { |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 623 | return SkPoint3(0, 0, 0); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 624 | } |
| 625 | SkScalar scale = SkScalarPow(cosAngle, fSpecularExponent); |
| 626 | if (cosAngle < fCosInnerConeAngle) { |
| 627 | scale = SkScalarMul(scale, cosAngle - fCosOuterConeAngle); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 628 | return color() * SkScalarMul(scale, fConeScale); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 629 | } |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 630 | return color() * scale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 631 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 632 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 633 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 634 | return SkNEW(GrGLSpotLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 635 | #else |
| 636 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 637 | return NULL; |
| 638 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 639 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 640 | virtual LightType type() const { return kSpot_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 641 | const SkPoint3& location() const { return fLocation; } |
| 642 | const SkPoint3& target() const { return fTarget; } |
| 643 | SkScalar specularExponent() const { return fSpecularExponent; } |
| 644 | SkScalar cosInnerConeAngle() const { return fCosInnerConeAngle; } |
| 645 | SkScalar cosOuterConeAngle() const { return fCosOuterConeAngle; } |
| 646 | SkScalar coneScale() const { return fConeScale; } |
senorblanco@chromium.org | eb31184 | 2012-07-11 20:49:26 +0000 | [diff] [blame] | 647 | const SkPoint3& s() const { return fS; } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 648 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 649 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpotLight) |
| 650 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 651 | protected: |
| 652 | SkSpotLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 653 | fLocation = readPoint3(buffer); |
| 654 | fTarget = readPoint3(buffer); |
| 655 | fSpecularExponent = buffer.readScalar(); |
| 656 | fCosOuterConeAngle = buffer.readScalar(); |
| 657 | fCosInnerConeAngle = buffer.readScalar(); |
| 658 | fConeScale = buffer.readScalar(); |
| 659 | fS = readPoint3(buffer); |
| 660 | } |
| 661 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 662 | INHERITED::flatten(buffer); |
| 663 | writePoint3(fLocation, buffer); |
| 664 | writePoint3(fTarget, buffer); |
| 665 | buffer.writeScalar(fSpecularExponent); |
| 666 | buffer.writeScalar(fCosOuterConeAngle); |
| 667 | buffer.writeScalar(fCosInnerConeAngle); |
| 668 | buffer.writeScalar(fConeScale); |
| 669 | writePoint3(fS, buffer); |
| 670 | } |
| 671 | |
senorblanco@chromium.org | bd9fad6 | 2012-07-11 16:25:37 +0000 | [diff] [blame] | 672 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 673 | if (other.type() != kSpot_LightType) { |
| 674 | return false; |
| 675 | } |
| 676 | |
| 677 | const SkSpotLight& o = static_cast<const SkSpotLight&>(other); |
| 678 | return INHERITED::isEqual(other) && |
| 679 | fLocation == o.fLocation && |
| 680 | fTarget == o.fTarget && |
| 681 | fSpecularExponent == o.fSpecularExponent && |
| 682 | fCosOuterConeAngle == o.fCosOuterConeAngle; |
| 683 | } |
| 684 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 685 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 686 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 687 | SkPoint3 fLocation; |
| 688 | SkPoint3 fTarget; |
| 689 | SkScalar fSpecularExponent; |
| 690 | SkScalar fCosOuterConeAngle; |
| 691 | SkScalar fCosInnerConeAngle; |
| 692 | SkScalar fConeScale; |
| 693 | SkPoint3 fS; |
| 694 | }; |
| 695 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 696 | /////////////////////////////////////////////////////////////////////////////// |
| 697 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 698 | SkLightingImageFilter::SkLightingImageFilter(SkLight* light, SkScalar surfaceScale) |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 699 | : fLight(light), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 700 | fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255))) |
| 701 | { |
| 702 | SkASSERT(fLight); |
reed@google.com | 51f3866 | 2012-06-27 14:24:29 +0000 | [diff] [blame] | 703 | // our caller knows that we take ownership of the light, so we don't |
| 704 | // need to call ref() here. |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 708 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 709 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 710 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 711 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | SkImageFilter* SkLightingImageFilter::CreatePointLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 715 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 716 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 717 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 718 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | SkImageFilter* SkLightingImageFilter::CreateSpotLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 722 | const SkPoint3& location, const SkPoint3& target, |
| 723 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 724 | SkColor lightColor, SkScalar surfaceScale, SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 725 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 726 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 727 | surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 728 | } |
| 729 | |
| 730 | SkImageFilter* SkLightingImageFilter::CreateDistantLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 731 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 732 | SkScalar ks, SkScalar shininess) { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 733 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 734 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | SkImageFilter* SkLightingImageFilter::CreatePointLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 738 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
| 739 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 740 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 741 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 742 | } |
| 743 | |
| 744 | SkImageFilter* SkLightingImageFilter::CreateSpotLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 745 | const SkPoint3& location, const SkPoint3& target, |
| 746 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 747 | SkColor lightColor, SkScalar surfaceScale, |
| 748 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 749 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 750 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 751 | surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 752 | } |
| 753 | |
| 754 | SkLightingImageFilter::~SkLightingImageFilter() { |
| 755 | fLight->unref(); |
| 756 | } |
| 757 | |
| 758 | SkLightingImageFilter::SkLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 759 | : INHERITED(buffer) |
| 760 | { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 761 | fLight = buffer.readFlattenableT<SkLight>(); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 762 | fSurfaceScale = buffer.readScalar(); |
| 763 | } |
| 764 | |
| 765 | void SkLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 766 | this->INHERITED::flatten(buffer); |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 767 | buffer.writeFlattenable(fLight); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 768 | buffer.writeScalar(fSurfaceScale); |
| 769 | } |
| 770 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 771 | /////////////////////////////////////////////////////////////////////////////// |
| 772 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 773 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 774 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 775 | fKD(kd) |
| 776 | { |
| 777 | } |
| 778 | |
| 779 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 780 | : INHERITED(buffer) |
| 781 | { |
| 782 | fKD = buffer.readScalar(); |
| 783 | } |
| 784 | |
| 785 | void SkDiffuseLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 786 | this->INHERITED::flatten(buffer); |
| 787 | buffer.writeScalar(fKD); |
| 788 | } |
| 789 | |
| 790 | bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*, |
| 791 | const SkBitmap& src, |
| 792 | const SkMatrix&, |
| 793 | SkBitmap* dst, |
| 794 | SkIPoint*) { |
| 795 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 796 | return false; |
| 797 | } |
| 798 | SkAutoLockPixels alp(src); |
| 799 | if (!src.getPixels()) { |
| 800 | return false; |
| 801 | } |
| 802 | if (src.width() < 2 || src.height() < 2) { |
| 803 | return false; |
| 804 | } |
| 805 | dst->setConfig(src.config(), src.width(), src.height()); |
| 806 | dst->allocPixels(); |
| 807 | |
| 808 | DiffuseLightingType lightingType(fKD); |
| 809 | switch (light()->type()) { |
| 810 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 811 | lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 812 | break; |
| 813 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 814 | lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 815 | break; |
| 816 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 817 | lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 818 | break; |
| 819 | } |
| 820 | return true; |
| 821 | } |
| 822 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 823 | bool SkDiffuseLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 824 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 825 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 826 | if (stage) { |
| 827 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 828 | *stage = SkNEW_ARGS(GrDiffuseLightingEffect, (texture, light(), scale, kd())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 829 | } |
| 830 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 831 | #else |
| 832 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 833 | return false; |
| 834 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 835 | } |
| 836 | |
| 837 | /////////////////////////////////////////////////////////////////////////////// |
| 838 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 839 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 840 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 841 | fKS(ks), |
| 842 | fShininess(shininess) |
| 843 | { |
| 844 | } |
| 845 | |
| 846 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 847 | : INHERITED(buffer) |
| 848 | { |
| 849 | fKS = buffer.readScalar(); |
| 850 | fShininess = buffer.readScalar(); |
| 851 | } |
| 852 | |
| 853 | void SkSpecularLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 854 | this->INHERITED::flatten(buffer); |
| 855 | buffer.writeScalar(fKS); |
| 856 | buffer.writeScalar(fShininess); |
| 857 | } |
| 858 | |
| 859 | bool SkSpecularLightingImageFilter::onFilterImage(Proxy*, |
| 860 | const SkBitmap& src, |
| 861 | const SkMatrix&, |
| 862 | SkBitmap* dst, |
| 863 | SkIPoint*) { |
| 864 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 865 | return false; |
| 866 | } |
| 867 | SkAutoLockPixels alp(src); |
| 868 | if (!src.getPixels()) { |
| 869 | return false; |
| 870 | } |
| 871 | if (src.width() < 2 || src.height() < 2) { |
| 872 | return false; |
| 873 | } |
| 874 | dst->setConfig(src.config(), src.width(), src.height()); |
| 875 | dst->allocPixels(); |
| 876 | |
| 877 | SpecularLightingType lightingType(fKS, fShininess); |
| 878 | switch (light()->type()) { |
| 879 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 880 | lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 881 | break; |
| 882 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 883 | lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 884 | break; |
| 885 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 886 | lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 887 | break; |
| 888 | } |
| 889 | return true; |
| 890 | } |
| 891 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 892 | bool SkSpecularLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 893 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 894 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 895 | if (stage) { |
| 896 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 897 | *stage = SkNEW_ARGS(GrSpecularLightingEffect, (texture, light(), scale, ks(), shininess())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 898 | } |
| 899 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 900 | #else |
| 901 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 902 | return false; |
| 903 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | /////////////////////////////////////////////////////////////////////////////// |
| 907 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 908 | #if SK_SUPPORT_GPU |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 909 | |
| 910 | namespace { |
| 911 | SkPoint3 random_point3(SkRandom* random) { |
| 912 | return SkPoint3(SkScalarToFloat(random->nextSScalar1()), |
| 913 | SkScalarToFloat(random->nextSScalar1()), |
| 914 | SkScalarToFloat(random->nextSScalar1())); |
| 915 | } |
| 916 | |
| 917 | SkLight* create_random_light(SkRandom* random) { |
| 918 | int type = random->nextULessThan(3); |
| 919 | switch (type) { |
| 920 | case 0: { |
| 921 | return SkNEW_ARGS(SkDistantLight, (random_point3(random), random->nextU())); |
| 922 | } |
| 923 | case 1: { |
| 924 | return SkNEW_ARGS(SkPointLight, (random_point3(random), random->nextU())); |
| 925 | } |
| 926 | case 2: { |
| 927 | return SkNEW_ARGS(SkSpotLight, (random_point3(random), |
| 928 | random_point3(random), |
| 929 | random->nextUScalar1(), |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 930 | random->nextUScalar1(), |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 931 | random->nextU())); |
| 932 | } |
| 933 | default: |
| 934 | GrCrash(); |
| 935 | return NULL; |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | } |
| 940 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 941 | class GrGLLightingEffect : public GrGLProgramStage { |
| 942 | public: |
| 943 | GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 944 | const GrCustomStage& stage); |
| 945 | virtual ~GrGLLightingEffect(); |
| 946 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 947 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 948 | virtual void emitVS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 949 | const char* vertexCoords) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 950 | virtual void emitFS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 951 | const char* outputColor, |
| 952 | const char* inputColor, |
| 953 | const char* samplerName) SK_OVERRIDE; |
| 954 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 955 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) = 0; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 956 | |
twiz@google.com | a5e65ec | 2012-08-02 15:15:16 +0000 | [diff] [blame] | 957 | static inline StageKey GenKey(const GrCustomStage& s, const GrGLCaps& caps); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 958 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 959 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 960 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 961 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 962 | int stageNum) SK_OVERRIDE; |
| 963 | |
| 964 | private: |
| 965 | typedef GrGLProgramStage INHERITED; |
| 966 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 967 | UniformHandle fImageIncrementUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 968 | UniformHandle fSurfaceScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 969 | GrGLLight* fLight; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 970 | }; |
| 971 | |
| 972 | /////////////////////////////////////////////////////////////////////////////// |
| 973 | |
| 974 | class GrGLDiffuseLightingEffect : public GrGLLightingEffect { |
| 975 | public: |
| 976 | GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 977 | const GrCustomStage& stage); |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 978 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 979 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 980 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 981 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 982 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 983 | int stageNum) SK_OVERRIDE; |
| 984 | |
| 985 | private: |
| 986 | typedef GrGLLightingEffect INHERITED; |
| 987 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 988 | UniformHandle fKDUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 989 | }; |
| 990 | |
| 991 | /////////////////////////////////////////////////////////////////////////////// |
| 992 | |
| 993 | class GrGLSpecularLightingEffect : public GrGLLightingEffect { |
| 994 | public: |
| 995 | GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 996 | const GrCustomStage& stage); |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 997 | virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 998 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) SK_OVERRIDE; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 999 | virtual void setData(const GrGLUniformManager&, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1000 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1001 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1002 | int stageNum) SK_OVERRIDE; |
| 1003 | |
| 1004 | private: |
| 1005 | typedef GrGLLightingEffect INHERITED; |
| 1006 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1007 | UniformHandle fKSUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1008 | UniformHandle fShininessUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1009 | }; |
| 1010 | |
| 1011 | /////////////////////////////////////////////////////////////////////////////// |
| 1012 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1013 | GrLightingEffect::GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale) |
| 1014 | : GrSingleTextureEffect(texture) |
| 1015 | , fLight(light) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1016 | , fSurfaceScale(surfaceScale) { |
| 1017 | fLight->ref(); |
| 1018 | } |
| 1019 | |
| 1020 | GrLightingEffect::~GrLightingEffect() { |
| 1021 | fLight->unref(); |
| 1022 | } |
| 1023 | |
| 1024 | bool GrLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1025 | const GrLightingEffect& s = |
| 1026 | static_cast<const GrLightingEffect&>(sBase); |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1027 | return INHERITED::isEqual(sBase) && |
| 1028 | fLight->isEqual(*s.fLight) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1029 | fSurfaceScale == s.fSurfaceScale; |
| 1030 | } |
| 1031 | |
| 1032 | /////////////////////////////////////////////////////////////////////////////// |
| 1033 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1034 | GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 1035 | : INHERITED(texture, light, surfaceScale), fKD(kd) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1036 | } |
| 1037 | |
| 1038 | const GrProgramStageFactory& GrDiffuseLightingEffect::getFactory() const { |
| 1039 | return GrTProgramStageFactory<GrDiffuseLightingEffect>::getInstance(); |
| 1040 | } |
| 1041 | |
| 1042 | bool GrDiffuseLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1043 | const GrDiffuseLightingEffect& s = |
| 1044 | static_cast<const GrDiffuseLightingEffect&>(sBase); |
| 1045 | return INHERITED::isEqual(sBase) && |
| 1046 | this->kd() == s.kd(); |
| 1047 | } |
| 1048 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1049 | GR_DEFINE_CUSTOM_STAGE_TEST(GrDiffuseLightingEffect); |
| 1050 | |
| 1051 | GrCustomStage* GrDiffuseLightingEffect::TestCreate(SkRandom* random, |
| 1052 | GrContext* context, |
| 1053 | GrTexture* textures[]) { |
| 1054 | SkScalar surfaceScale = random->nextSScalar1(); |
| 1055 | SkScalar kd = random->nextUScalar1(); |
| 1056 | SkAutoTUnref<SkLight> light(create_random_light(random)); |
| 1057 | return SkNEW_ARGS(GrDiffuseLightingEffect, (textures[GrCustomStageUnitTest::kAlphaTextureIdx], |
| 1058 | light, surfaceScale, kd)); |
| 1059 | } |
| 1060 | |
| 1061 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1062 | /////////////////////////////////////////////////////////////////////////////// |
| 1063 | |
| 1064 | GrGLLightingEffect::GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 1065 | const GrCustomStage& stage) |
| 1066 | : GrGLProgramStage(factory) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1067 | , fImageIncrementUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1068 | , fSurfaceScaleUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1069 | const GrLightingEffect& m = static_cast<const GrLightingEffect&>(stage); |
| 1070 | fLight = m.light()->createGLLight(); |
| 1071 | } |
| 1072 | |
| 1073 | GrGLLightingEffect::~GrGLLightingEffect() { |
| 1074 | delete fLight; |
| 1075 | } |
| 1076 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1077 | void GrGLLightingEffect::setupVariables(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1078 | fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1079 | kVec2f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1080 | "ImageIncrement"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1081 | fSurfaceScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1082 | kFloat_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1083 | "SurfaceScale"); |
| 1084 | fLight->setupVariables(builder); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1085 | } |
| 1086 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1087 | void GrGLLightingEffect::emitVS(GrGLShaderBuilder* builder, |
| 1088 | const char* vertexCoords) { |
| 1089 | fLight->emitVS(&builder->fVSCode); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1090 | } |
| 1091 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1092 | void GrGLLightingEffect::emitFS(GrGLShaderBuilder* builder, |
| 1093 | const char* outputColor, |
| 1094 | const char* inputColor, |
| 1095 | const char* samplerName) { |
| 1096 | SkString* code = &builder->fFSCode; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1097 | fLight->emitFuncs(builder); |
| 1098 | SkString lightFunc; |
| 1099 | this->emitLightFunc(builder, &lightFunc); |
| 1100 | static const GrGLShaderVar gSobelArgs[] = { |
| 1101 | GrGLShaderVar("a", kFloat_GrSLType), |
| 1102 | GrGLShaderVar("b", kFloat_GrSLType), |
| 1103 | GrGLShaderVar("c", kFloat_GrSLType), |
| 1104 | GrGLShaderVar("d", kFloat_GrSLType), |
| 1105 | GrGLShaderVar("e", kFloat_GrSLType), |
| 1106 | GrGLShaderVar("f", kFloat_GrSLType), |
| 1107 | GrGLShaderVar("scale", kFloat_GrSLType), |
| 1108 | }; |
| 1109 | SkString sobelFuncName; |
| 1110 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1111 | kFloat_GrSLType, |
| 1112 | "sobel", |
| 1113 | SK_ARRAY_COUNT(gSobelArgs), |
| 1114 | gSobelArgs, |
| 1115 | "\treturn (-a + b - 2.0 * c + 2.0 * d -e + f) * scale;\n", |
| 1116 | &sobelFuncName); |
| 1117 | static const GrGLShaderVar gPointToNormalArgs[] = { |
| 1118 | GrGLShaderVar("x", kFloat_GrSLType), |
| 1119 | GrGLShaderVar("y", kFloat_GrSLType), |
| 1120 | GrGLShaderVar("scale", kFloat_GrSLType), |
| 1121 | }; |
| 1122 | SkString pointToNormalName; |
| 1123 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1124 | kVec3f_GrSLType, |
| 1125 | "pointToNormal", |
| 1126 | SK_ARRAY_COUNT(gPointToNormalArgs), |
| 1127 | gPointToNormalArgs, |
| 1128 | "\treturn normalize(vec3(-x * scale, -y * scale, 1));\n", |
| 1129 | &pointToNormalName); |
| 1130 | |
| 1131 | static const GrGLShaderVar gInteriorNormalArgs[] = { |
| 1132 | GrGLShaderVar("m", kFloat_GrSLType, 9), |
| 1133 | GrGLShaderVar("surfaceScale", kFloat_GrSLType), |
| 1134 | }; |
| 1135 | SkString interiorNormalBody; |
| 1136 | interiorNormalBody.appendf("\treturn %s(%s(m[0], m[2], m[3], m[5], m[6], m[8], 0.25),\n" |
| 1137 | "\t %s(m[0], m[6], m[1], m[7], m[2], m[8], 0.25),\n" |
| 1138 | "\t surfaceScale);\n", |
| 1139 | pointToNormalName.c_str(), |
| 1140 | sobelFuncName.c_str(), |
| 1141 | sobelFuncName.c_str()); |
| 1142 | SkString interiorNormalName; |
| 1143 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1144 | kVec3f_GrSLType, |
| 1145 | "interiorNormal", |
| 1146 | SK_ARRAY_COUNT(gInteriorNormalArgs), |
| 1147 | gInteriorNormalArgs, |
| 1148 | interiorNormalBody.c_str(), |
| 1149 | &interiorNormalName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1150 | |
bsalomon@google.com | 34bcb9f | 2012-08-28 18:20:18 +0000 | [diff] [blame^] | 1151 | code->appendf("\t\tvec2 coord = %s;\n", builder->defaultTexCoordsName()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1152 | code->appendf("\t\tfloat m[9];\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1153 | |
| 1154 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1155 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1156 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1157 | int index = 0; |
| 1158 | for (int dy = -1; dy <= 1; dy++) { |
| 1159 | for (int dx = -1; dx <= 1; dx++) { |
| 1160 | SkString texCoords; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1161 | texCoords.appendf("coord + vec2(%d, %d) * %s", dx, dy, imgInc); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1162 | code->appendf("\t\tm[%d] = ", index++); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1163 | builder->emitTextureLookup(samplerName, texCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1164 | code->appendf(".a;\n"); |
| 1165 | } |
| 1166 | } |
| 1167 | code->appendf("\t\tvec3 surfaceToLight = "); |
| 1168 | SkString arg; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1169 | arg.appendf("%s * m[4]", surfScale); |
| 1170 | fLight->emitSurfaceToLight(builder, code, arg.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1171 | code->appendf(";\n"); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1172 | code->appendf("\t\t%s = %s(%s(m, %s), surfaceToLight, ", |
| 1173 | outputColor, lightFunc.c_str(), interiorNormalName.c_str(), surfScale); |
| 1174 | fLight->emitLightColor(builder, "surfaceToLight"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1175 | code->appendf(")%s;\n", builder->fModulate.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
twiz@google.com | a5e65ec | 2012-08-02 15:15:16 +0000 | [diff] [blame] | 1178 | GrGLProgramStage::StageKey GrGLLightingEffect::GenKey(const GrCustomStage& s, |
| 1179 | const GrGLCaps& caps) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1180 | return static_cast<const GrLightingEffect&>(s).light()->type(); |
| 1181 | } |
| 1182 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1183 | void GrGLLightingEffect::setData(const GrGLUniformManager& uman, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1184 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1185 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1186 | int stageNum) { |
| 1187 | const GrLightingEffect& effect = |
| 1188 | static_cast<const GrLightingEffect&>(data); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1189 | GrGLTexture* texture = static_cast<GrGLTexture*>(data.texture(0)); |
| 1190 | float ySign = texture->orientation() == GrGLTexture::kTopDown_Orientation ? -1.0f : 1.0f; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1191 | uman.set2f(fImageIncrementUni, 1.0f / texture->width(), ySign / texture->height()); |
| 1192 | uman.set1f(fSurfaceScaleUni, effect.surfaceScale()); |
| 1193 | fLight->setData(uman, rt, effect.light()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1194 | } |
| 1195 | |
| 1196 | /////////////////////////////////////////////////////////////////////////////// |
| 1197 | |
| 1198 | /////////////////////////////////////////////////////////////////////////////// |
| 1199 | |
| 1200 | GrGLDiffuseLightingEffect::GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 1201 | const GrCustomStage& stage) |
| 1202 | : INHERITED(factory, stage) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1203 | , fKDUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1204 | } |
| 1205 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1206 | void GrGLDiffuseLightingEffect::setupVariables(GrGLShaderBuilder* builder) { |
| 1207 | INHERITED::setupVariables(builder); |
| 1208 | fKDUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, "KD"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1209 | } |
| 1210 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1211 | void GrGLDiffuseLightingEffect::emitLightFunc(GrGLShaderBuilder* builder, SkString* funcName) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1212 | const char* kd = builder->getUniformCStr(fKDUni); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1213 | static const GrGLShaderVar gLightArgs[] = { |
| 1214 | GrGLShaderVar("normal", kVec3f_GrSLType), |
| 1215 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType), |
| 1216 | GrGLShaderVar("lightColor", kVec3f_GrSLType) |
| 1217 | }; |
| 1218 | SkString lightBody; |
| 1219 | lightBody.appendf("\tfloat colorScale = %s * dot(normal, surfaceToLight);\n", kd); |
| 1220 | lightBody.appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
| 1221 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1222 | kVec4f_GrSLType, |
| 1223 | "light", |
| 1224 | SK_ARRAY_COUNT(gLightArgs), |
| 1225 | gLightArgs, |
| 1226 | lightBody.c_str(), |
| 1227 | funcName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1228 | } |
| 1229 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1230 | void GrGLDiffuseLightingEffect::setData(const GrGLUniformManager& uman, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1231 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1232 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1233 | int stageNum) { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1234 | INHERITED::setData(uman, data, rt, stageNum); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1235 | const GrDiffuseLightingEffect& effect = |
| 1236 | static_cast<const GrDiffuseLightingEffect&>(data); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1237 | uman.set1f(fKDUni, effect.kd()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1238 | } |
| 1239 | |
| 1240 | /////////////////////////////////////////////////////////////////////////////// |
| 1241 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1242 | GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 1243 | : INHERITED(texture, light, surfaceScale), |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1244 | fKS(ks), |
| 1245 | fShininess(shininess) { |
| 1246 | } |
| 1247 | |
| 1248 | const GrProgramStageFactory& GrSpecularLightingEffect::getFactory() const { |
| 1249 | return GrTProgramStageFactory<GrSpecularLightingEffect>::getInstance(); |
| 1250 | } |
| 1251 | |
| 1252 | bool GrSpecularLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1253 | const GrSpecularLightingEffect& s = |
| 1254 | static_cast<const GrSpecularLightingEffect&>(sBase); |
| 1255 | return INHERITED::isEqual(sBase) && |
| 1256 | this->ks() == s.ks() && |
| 1257 | this->shininess() == s.shininess(); |
| 1258 | } |
| 1259 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1260 | GR_DEFINE_CUSTOM_STAGE_TEST(GrSpecularLightingEffect); |
| 1261 | |
| 1262 | GrCustomStage* GrSpecularLightingEffect::TestCreate(SkRandom* random, |
| 1263 | GrContext* context, |
| 1264 | GrTexture* textures[]) { |
| 1265 | SkScalar surfaceScale = random->nextSScalar1(); |
| 1266 | SkScalar ks = random->nextUScalar1(); |
| 1267 | SkScalar shininess = random->nextUScalar1(); |
| 1268 | SkAutoTUnref<SkLight> light(create_random_light(random)); |
| 1269 | return SkNEW_ARGS(GrSpecularLightingEffect, (textures[GrCustomStageUnitTest::kAlphaTextureIdx], |
| 1270 | light, surfaceScale, ks, shininess)); |
| 1271 | } |
| 1272 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1273 | /////////////////////////////////////////////////////////////////////////////// |
| 1274 | |
| 1275 | GrGLSpecularLightingEffect::GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 1276 | const GrCustomStage& stage) |
| 1277 | : GrGLLightingEffect(factory, stage) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1278 | , fKSUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1279 | , fShininessUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1280 | } |
| 1281 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1282 | void GrGLSpecularLightingEffect::setupVariables(GrGLShaderBuilder* builder) { |
| 1283 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1284 | fKSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1285 | kFloat_GrSLType, "KS"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1286 | fShininessUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1287 | kFloat_GrSLType, "Shininess"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1288 | } |
| 1289 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1290 | void GrGLSpecularLightingEffect::emitLightFunc(GrGLShaderBuilder* builder, SkString* funcName) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1291 | const char* ks = builder->getUniformCStr(fKSUni); |
| 1292 | const char* shininess = builder->getUniformCStr(fShininessUni); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1293 | |
| 1294 | static const GrGLShaderVar gLightArgs[] = { |
| 1295 | GrGLShaderVar("normal", kVec3f_GrSLType), |
| 1296 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType), |
| 1297 | GrGLShaderVar("lightColor", kVec3f_GrSLType) |
| 1298 | }; |
| 1299 | SkString lightBody; |
| 1300 | lightBody.appendf("\tvec3 halfDir = vec3(normalize(surfaceToLight + vec3(0, 0, 1)));\n"); |
| 1301 | lightBody.appendf("\tfloat colorScale = %s * pow(dot(normal, halfDir), %s);\n", ks, shininess); |
| 1302 | lightBody.appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
| 1303 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1304 | kVec4f_GrSLType, |
| 1305 | "light", |
| 1306 | SK_ARRAY_COUNT(gLightArgs), |
| 1307 | gLightArgs, |
| 1308 | lightBody.c_str(), |
| 1309 | funcName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1310 | } |
| 1311 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1312 | void GrGLSpecularLightingEffect::setData(const GrGLUniformManager& uman, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1313 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1314 | const GrRenderTarget* rt, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1315 | int stageNum) { |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1316 | INHERITED::setData(uman, data, rt, stageNum); |
| 1317 | const GrSpecularLightingEffect& effect = static_cast<const GrSpecularLightingEffect&>(data); |
| 1318 | uman.set1f(fKSUni, effect.ks()); |
| 1319 | uman.set1f(fShininessUni, effect.shininess()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1320 | } |
| 1321 | |
| 1322 | /////////////////////////////////////////////////////////////////////////////// |
| 1323 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1324 | void GrGLLight::emitLightColor(GrGLShaderBuilder* builder, |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1325 | const char *surfaceToLight) const { |
| 1326 | const char* color = builder->getUniformCStr(fColorUni); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1327 | builder->fFSCode.append(color); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1328 | } |
| 1329 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1330 | void GrGLLight::setupVariables(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1331 | fColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1332 | kVec3f_GrSLType, "LightColor"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1333 | } |
| 1334 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1335 | void GrGLLight::setData(const GrGLUniformManager& uman, |
| 1336 | const GrRenderTarget* rt, |
| 1337 | const SkLight* light) const { |
| 1338 | setUniformPoint3(uman, fColorUni, light->color() * SkScalarInvert(SkIntToScalar(255))); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1339 | } |
| 1340 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1341 | /////////////////////////////////////////////////////////////////////////////// |
| 1342 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1343 | void GrGLDistantLight::setupVariables(GrGLShaderBuilder* builder) { |
| 1344 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1345 | fDirectionUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1346 | "LightDirection"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1347 | } |
| 1348 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1349 | void GrGLDistantLight::setData(const GrGLUniformManager& uman, |
| 1350 | const GrRenderTarget* rt, |
| 1351 | const SkLight* light) const { |
| 1352 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1353 | SkASSERT(light->type() == SkLight::kDistant_LightType); |
| 1354 | const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1355 | setUniformNormal3(uman, fDirectionUni, distantLight->direction()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1356 | } |
| 1357 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1358 | void GrGLDistantLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1359 | SkString* out, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1360 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1361 | const char* dir = builder->getUniformCStr(fDirectionUni); |
| 1362 | out->append(dir); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1363 | } |
| 1364 | |
| 1365 | /////////////////////////////////////////////////////////////////////////////// |
| 1366 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1367 | void GrGLPointLight::setupVariables(GrGLShaderBuilder* builder) { |
| 1368 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1369 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1370 | "LightLocation"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1371 | } |
| 1372 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1373 | void GrGLPointLight::setData(const GrGLUniformManager& uman, |
| 1374 | const GrRenderTarget* rt, |
| 1375 | const SkLight* light) const { |
| 1376 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1377 | SkASSERT(light->type() == SkLight::kPoint_LightType); |
| 1378 | const SkPointLight* pointLight = static_cast<const SkPointLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1379 | setUniformPoint3FlipY(uman, fLocationUni, pointLight->location(), rt->height()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1380 | } |
| 1381 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1382 | void GrGLPointLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1383 | } |
| 1384 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1385 | void GrGLPointLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1386 | SkString* out, |
| 1387 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1388 | const char* loc = builder->getUniformCStr(fLocationUni); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1389 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", loc, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1390 | } |
| 1391 | |
| 1392 | /////////////////////////////////////////////////////////////////////////////// |
| 1393 | |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1394 | void GrGLSpotLight::setupVariables(GrGLShaderBuilder* builder) { |
| 1395 | INHERITED::setupVariables(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1396 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1397 | kVec3f_GrSLType, "LightLocation"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1398 | fExponentUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1399 | kFloat_GrSLType, "Exponent"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1400 | fCosInnerConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1401 | kFloat_GrSLType, "CosInnerConeAngle"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1402 | fCosOuterConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1403 | kFloat_GrSLType, "CosOuterConeAngle"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1404 | fConeScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1405 | kFloat_GrSLType, "ConeScale"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1406 | fSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1407 | kVec3f_GrSLType, "S"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1408 | } |
| 1409 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1410 | void GrGLSpotLight::setData(const GrGLUniformManager& uman, |
| 1411 | const GrRenderTarget* rt, |
| 1412 | const SkLight* light) const { |
| 1413 | INHERITED::setData(uman, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1414 | SkASSERT(light->type() == SkLight::kSpot_LightType); |
| 1415 | const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1416 | setUniformPoint3FlipY(uman, fLocationUni, spotLight->location(), rt->height()); |
| 1417 | uman.set1f(fExponentUni, spotLight->specularExponent()); |
| 1418 | uman.set1f(fCosInnerConeAngleUni, spotLight->cosInnerConeAngle()); |
| 1419 | uman.set1f(fCosOuterConeAngleUni, spotLight->cosOuterConeAngle()); |
| 1420 | uman.set1f(fConeScaleUni, spotLight->coneScale()); |
| 1421 | setUniformNormal3(uman, fSUni, spotLight->s()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1422 | } |
| 1423 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1424 | void GrGLSpotLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1425 | } |
| 1426 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1427 | void GrGLSpotLight::emitFuncs(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1428 | const char* exponent = builder->getUniformCStr(fExponentUni); |
| 1429 | const char* cosInner = builder->getUniformCStr(fCosInnerConeAngleUni); |
| 1430 | const char* cosOuter = builder->getUniformCStr(fCosOuterConeAngleUni); |
| 1431 | const char* coneScale = builder->getUniformCStr(fConeScaleUni); |
| 1432 | const char* s = builder->getUniformCStr(fSUni); |
| 1433 | const char* color = builder->getUniformCStr(fColorUni); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1434 | static const GrGLShaderVar gLightColorArgs[] = { |
| 1435 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType) |
| 1436 | }; |
| 1437 | SkString lightColorBody; |
| 1438 | lightColorBody.appendf("\tfloat cosAngle = -dot(surfaceToLight, %s);\n", s); |
| 1439 | lightColorBody.appendf("\tif (cosAngle < %s) {\n", cosOuter); |
| 1440 | lightColorBody.appendf("\t\treturn vec3(0);\n"); |
| 1441 | lightColorBody.appendf("\t}\n"); |
| 1442 | lightColorBody.appendf("\tfloat scale = pow(cosAngle, %s);\n", exponent); |
| 1443 | lightColorBody.appendf("\tif (cosAngle < %s) {\n", cosInner); |
| 1444 | lightColorBody.appendf("\t\treturn %s * scale * (cosAngle - %s) * %s;\n", |
| 1445 | color, cosOuter, coneScale); |
| 1446 | lightColorBody.appendf("\t}\n"); |
| 1447 | lightColorBody.appendf("\treturn %s;\n", color); |
| 1448 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1449 | kVec3f_GrSLType, |
| 1450 | "lightColor", |
| 1451 | SK_ARRAY_COUNT(gLightColorArgs), |
| 1452 | gLightColorArgs, |
| 1453 | lightColorBody.c_str(), |
| 1454 | &fLightColorFunc); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1455 | } |
| 1456 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1457 | void GrGLSpotLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1458 | SkString* out, |
| 1459 | const char* z) const { |
| 1460 | const char* location= builder->getUniformCStr(fLocationUni); |
| 1461 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", location, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1462 | } |
| 1463 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1464 | void GrGLSpotLight::emitLightColor(GrGLShaderBuilder* builder, |
| 1465 | const char *surfaceToLight) const { |
| 1466 | builder->fFSCode.appendf("%s(%s)", fLightColorFunc.c_str(), surfaceToLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1467 | } |
| 1468 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 1469 | #endif |
| 1470 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 1471 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter) |
| 1472 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter) |
| 1473 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter) |
| 1474 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight) |
| 1475 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight) |
| 1476 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight) |
| 1477 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |