senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkLightingImageFilter.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkColorPriv.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 11 | #include "SkFlattenableBuffers.h" |
| 12 | #include "SkOrderedReadBuffer.h" |
| 13 | #include "SkOrderedWriteBuffer.h" |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 14 | #include "SkTypes.h" |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 15 | |
| 16 | #if SK_SUPPORT_GPU |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 17 | #include "effects/GrSingleTextureEffect.h" |
bsalomon@google.com | d698f77 | 2012-10-25 13:22:00 +0000 | [diff] [blame] | 18 | #include "gl/GrGLEffect.h" |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 19 | #include "gl/GrGLEffectMatrix.h" |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 20 | #include "GrEffect.h" |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 21 | #include "GrTBackendEffectFactory.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 22 | |
| 23 | class GrGLDiffuseLightingEffect; |
| 24 | class GrGLSpecularLightingEffect; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 25 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 26 | // For brevity |
| 27 | typedef GrGLUniformManager::UniformHandle UniformHandle; |
| 28 | static const UniformHandle kInvalidUniformHandle = GrGLUniformManager::kInvalidUniformHandle; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 29 | #endif |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 30 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 31 | namespace { |
| 32 | |
| 33 | const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3)); |
| 34 | const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3)); |
| 35 | const SkScalar gOneHalf = SkFloatToScalar(0.5f); |
| 36 | const SkScalar gOneQuarter = SkFloatToScalar(0.25f); |
| 37 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 38 | #if SK_SUPPORT_GPU |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 39 | void setUniformPoint3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
bsalomon@google.com | b9119a6 | 2012-07-25 17:55:26 +0000 | [diff] [blame] | 40 | GR_STATIC_ASSERT(sizeof(SkPoint3) == 3 * sizeof(GrGLfloat)); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 41 | uman.set3fv(uni, 0, 1, &point.fX); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 42 | } |
| 43 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 44 | void setUniformNormal3(const GrGLUniformManager& uman, UniformHandle uni, const SkPoint3& point) { |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 45 | setUniformPoint3(uman, uni, SkPoint3(point.fX, point.fY, point.fZ)); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 46 | } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 47 | #endif |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 48 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 49 | // Shift matrix components to the left, as we advance pixels to the right. |
| 50 | inline void shiftMatrixLeft(int m[9]) { |
| 51 | m[0] = m[1]; |
| 52 | m[3] = m[4]; |
| 53 | m[6] = m[7]; |
| 54 | m[1] = m[2]; |
| 55 | m[4] = m[5]; |
| 56 | m[7] = m[8]; |
| 57 | } |
| 58 | |
| 59 | class DiffuseLightingType { |
| 60 | public: |
| 61 | DiffuseLightingType(SkScalar kd) |
| 62 | : fKD(kd) {} |
| 63 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 64 | SkScalar colorScale = SkScalarMul(fKD, normal.dot(surfaceTolight)); |
| 65 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 66 | SkPoint3 color(lightColor * colorScale); |
| 67 | return SkPackARGB32(255, |
| 68 | SkScalarFloorToInt(color.fX), |
| 69 | SkScalarFloorToInt(color.fY), |
| 70 | SkScalarFloorToInt(color.fZ)); |
| 71 | } |
| 72 | private: |
| 73 | SkScalar fKD; |
| 74 | }; |
| 75 | |
| 76 | class SpecularLightingType { |
| 77 | public: |
| 78 | SpecularLightingType(SkScalar ks, SkScalar shininess) |
| 79 | : fKS(ks), fShininess(shininess) {} |
| 80 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 81 | SkPoint3 halfDir(surfaceTolight); |
| 82 | halfDir.fZ += SK_Scalar1; // eye position is always (0, 0, 1) |
| 83 | halfDir.normalize(); |
| 84 | SkScalar colorScale = SkScalarMul(fKS, |
| 85 | SkScalarPow(normal.dot(halfDir), fShininess)); |
| 86 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 87 | SkPoint3 color(lightColor * colorScale); |
| 88 | return SkPackARGB32(SkScalarFloorToInt(color.maxComponent()), |
| 89 | SkScalarFloorToInt(color.fX), |
| 90 | SkScalarFloorToInt(color.fY), |
| 91 | SkScalarFloorToInt(color.fZ)); |
| 92 | } |
| 93 | private: |
| 94 | SkScalar fKS; |
| 95 | SkScalar fShininess; |
| 96 | }; |
| 97 | |
| 98 | inline SkScalar sobel(int a, int b, int c, int d, int e, int f, SkScalar scale) { |
| 99 | return SkScalarMul(SkIntToScalar(-a + b - 2 * c + 2 * d -e + f), scale); |
| 100 | } |
| 101 | |
| 102 | inline SkPoint3 pointToNormal(SkScalar x, SkScalar y, SkScalar surfaceScale) { |
| 103 | SkPoint3 vector(SkScalarMul(-x, surfaceScale), |
| 104 | SkScalarMul(-y, surfaceScale), |
| 105 | SK_Scalar1); |
| 106 | vector.normalize(); |
| 107 | return vector; |
| 108 | } |
| 109 | |
| 110 | inline SkPoint3 topLeftNormal(int m[9], SkScalar surfaceScale) { |
| 111 | return pointToNormal(sobel(0, 0, m[4], m[5], m[7], m[8], gTwoThirds), |
| 112 | sobel(0, 0, m[4], m[7], m[5], m[8], gTwoThirds), |
| 113 | surfaceScale); |
| 114 | } |
| 115 | |
| 116 | inline SkPoint3 topNormal(int m[9], SkScalar surfaceScale) { |
| 117 | return pointToNormal(sobel( 0, 0, m[3], m[5], m[6], m[8], gOneThird), |
| 118 | sobel(m[3], m[6], m[4], m[7], m[5], m[8], gOneHalf), |
| 119 | surfaceScale); |
| 120 | } |
| 121 | |
| 122 | inline SkPoint3 topRightNormal(int m[9], SkScalar surfaceScale) { |
| 123 | return pointToNormal(sobel( 0, 0, m[3], m[4], m[6], m[7], gTwoThirds), |
| 124 | sobel(m[3], m[6], m[4], m[7], 0, 0, gTwoThirds), |
| 125 | surfaceScale); |
| 126 | } |
| 127 | |
| 128 | inline SkPoint3 leftNormal(int m[9], SkScalar surfaceScale) { |
| 129 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], m[7], m[8], gOneHalf), |
| 130 | sobel( 0, 0, m[1], m[7], m[2], m[8], gOneThird), |
| 131 | surfaceScale); |
| 132 | } |
| 133 | |
| 134 | |
| 135 | inline SkPoint3 interiorNormal(int m[9], SkScalar surfaceScale) { |
| 136 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], gOneQuarter), |
| 137 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], gOneQuarter), |
| 138 | surfaceScale); |
| 139 | } |
| 140 | |
| 141 | inline SkPoint3 rightNormal(int m[9], SkScalar surfaceScale) { |
| 142 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], m[6], m[7], gOneHalf), |
| 143 | sobel(m[0], m[6], m[1], m[7], 0, 0, gOneThird), |
| 144 | surfaceScale); |
| 145 | } |
| 146 | |
| 147 | inline SkPoint3 bottomLeftNormal(int m[9], SkScalar surfaceScale) { |
| 148 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], 0, 0, gTwoThirds), |
| 149 | sobel( 0, 0, m[1], m[4], m[2], m[5], gTwoThirds), |
| 150 | surfaceScale); |
| 151 | } |
| 152 | |
| 153 | inline SkPoint3 bottomNormal(int m[9], SkScalar surfaceScale) { |
| 154 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], 0, 0, gOneThird), |
| 155 | sobel(m[0], m[3], m[1], m[4], m[2], m[5], gOneHalf), |
| 156 | surfaceScale); |
| 157 | } |
| 158 | |
| 159 | inline SkPoint3 bottomRightNormal(int m[9], SkScalar surfaceScale) { |
| 160 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], 0, 0, gTwoThirds), |
| 161 | sobel(m[0], m[3], m[1], m[4], 0, 0, gTwoThirds), |
| 162 | surfaceScale); |
| 163 | } |
| 164 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 165 | template <class LightingType, class LightType> void lightBitmap(const LightingType& lightingType, const SkLight* light, const SkBitmap& src, SkBitmap* dst, SkScalar surfaceScale) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 166 | const LightType* l = static_cast<const LightType*>(light); |
| 167 | int y = 0; |
| 168 | { |
| 169 | const SkPMColor* row1 = src.getAddr32(0, 0); |
| 170 | const SkPMColor* row2 = src.getAddr32(0, 1); |
| 171 | SkPMColor* dptr = dst->getAddr32(0, 0); |
| 172 | int m[9]; |
| 173 | int x = 0; |
| 174 | m[4] = SkGetPackedA32(*row1++); |
| 175 | m[5] = SkGetPackedA32(*row1++); |
| 176 | m[7] = SkGetPackedA32(*row2++); |
| 177 | m[8] = SkGetPackedA32(*row2++); |
| 178 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 179 | *dptr++ = lightingType.light(topLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 180 | for (x = 1; x < src.width() - 1; ++x) |
| 181 | { |
| 182 | shiftMatrixLeft(m); |
| 183 | m[5] = SkGetPackedA32(*row1++); |
| 184 | m[8] = SkGetPackedA32(*row2++); |
| 185 | surfaceToLight = l->surfaceToLight(x, 0, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 186 | *dptr++ = lightingType.light(topNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 187 | } |
| 188 | shiftMatrixLeft(m); |
| 189 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 190 | *dptr++ = lightingType.light(topRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | for (++y; y < src.height() - 1; ++y) { |
| 194 | const SkPMColor* row0 = src.getAddr32(0, y - 1); |
| 195 | const SkPMColor* row1 = src.getAddr32(0, y); |
| 196 | const SkPMColor* row2 = src.getAddr32(0, y + 1); |
| 197 | SkPMColor* dptr = dst->getAddr32(0, y); |
| 198 | int m[9]; |
| 199 | int x = 0; |
| 200 | m[1] = SkGetPackedA32(*row0++); |
| 201 | m[2] = SkGetPackedA32(*row0++); |
| 202 | m[4] = SkGetPackedA32(*row1++); |
| 203 | m[5] = SkGetPackedA32(*row1++); |
| 204 | m[7] = SkGetPackedA32(*row2++); |
| 205 | m[8] = SkGetPackedA32(*row2++); |
| 206 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 207 | *dptr++ = lightingType.light(leftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 208 | for (x = 1; x < src.width() - 1; ++x) { |
| 209 | shiftMatrixLeft(m); |
| 210 | m[2] = SkGetPackedA32(*row0++); |
| 211 | m[5] = SkGetPackedA32(*row1++); |
| 212 | m[8] = SkGetPackedA32(*row2++); |
| 213 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 214 | *dptr++ = lightingType.light(interiorNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 215 | } |
| 216 | shiftMatrixLeft(m); |
| 217 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 218 | *dptr++ = lightingType.light(rightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | { |
| 222 | const SkPMColor* row0 = src.getAddr32(0, src.height() - 2); |
| 223 | const SkPMColor* row1 = src.getAddr32(0, src.height() - 1); |
| 224 | int x = 0; |
| 225 | SkPMColor* dptr = dst->getAddr32(0, src.height() - 1); |
| 226 | int m[9]; |
| 227 | m[1] = SkGetPackedA32(*row0++); |
| 228 | m[2] = SkGetPackedA32(*row0++); |
| 229 | m[4] = SkGetPackedA32(*row1++); |
| 230 | m[5] = SkGetPackedA32(*row1++); |
| 231 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 232 | *dptr++ = lightingType.light(bottomLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 233 | for (x = 1; x < src.width() - 1; ++x) |
| 234 | { |
| 235 | shiftMatrixLeft(m); |
| 236 | m[2] = SkGetPackedA32(*row0++); |
| 237 | m[5] = SkGetPackedA32(*row1++); |
| 238 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 239 | *dptr++ = lightingType.light(bottomNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 240 | } |
| 241 | shiftMatrixLeft(m); |
| 242 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 243 | *dptr++ = lightingType.light(bottomRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 244 | } |
| 245 | } |
| 246 | |
| 247 | SkPoint3 readPoint3(SkFlattenableReadBuffer& buffer) { |
| 248 | SkPoint3 point; |
| 249 | point.fX = buffer.readScalar(); |
| 250 | point.fY = buffer.readScalar(); |
| 251 | point.fZ = buffer.readScalar(); |
| 252 | return point; |
| 253 | }; |
| 254 | |
| 255 | void writePoint3(const SkPoint3& point, SkFlattenableWriteBuffer& buffer) { |
| 256 | buffer.writeScalar(point.fX); |
| 257 | buffer.writeScalar(point.fY); |
| 258 | buffer.writeScalar(point.fZ); |
| 259 | }; |
| 260 | |
| 261 | class SkDiffuseLightingImageFilter : public SkLightingImageFilter { |
| 262 | public: |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 263 | SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, |
| 264 | SkScalar kd, SkImageFilter* input); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 265 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter) |
| 266 | |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 267 | virtual bool asNewEffect(GrEffect** effect, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 268 | SkScalar kd() const { return fKD; } |
| 269 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 270 | protected: |
| 271 | explicit SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 272 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 273 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 274 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 275 | |
| 276 | |
| 277 | private: |
| 278 | typedef SkLightingImageFilter INHERITED; |
| 279 | SkScalar fKD; |
| 280 | }; |
| 281 | |
| 282 | class SkSpecularLightingImageFilter : public SkLightingImageFilter { |
| 283 | public: |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 284 | SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess, SkImageFilter* input); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 285 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter) |
| 286 | |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 287 | virtual bool asNewEffect(GrEffect** effect, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 288 | SkScalar ks() const { return fKS; } |
| 289 | SkScalar shininess() const { return fShininess; } |
| 290 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 291 | protected: |
| 292 | explicit SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 293 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 294 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 295 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 296 | |
| 297 | private: |
| 298 | typedef SkLightingImageFilter INHERITED; |
| 299 | SkScalar fKS; |
| 300 | SkScalar fShininess; |
| 301 | }; |
| 302 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 303 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 304 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 305 | class GrLightingEffect : public GrSingleTextureEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 306 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 307 | GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 308 | virtual ~GrLightingEffect(); |
| 309 | |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 310 | virtual bool isEqual(const GrEffect&) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 311 | |
| 312 | const SkLight* light() const { return fLight; } |
| 313 | SkScalar surfaceScale() const { return fSurfaceScale; } |
bsalomon@google.com | 371e105 | 2013-01-11 21:08:55 +0000 | [diff] [blame^] | 314 | |
| 315 | virtual void getConstantColorComponents(GrColor* color, |
| 316 | uint32_t* validFlags) const SK_OVERRIDE { |
| 317 | // lighting shaders are complicated. We just throw up our hands. |
| 318 | *validFlags = 0; |
| 319 | } |
| 320 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 321 | private: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 322 | typedef GrSingleTextureEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 323 | const SkLight* fLight; |
| 324 | SkScalar fSurfaceScale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 325 | }; |
| 326 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 327 | class GrDiffuseLightingEffect : public GrLightingEffect { |
| 328 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 329 | GrDiffuseLightingEffect(GrTexture* texture, |
| 330 | const SkLight* light, |
| 331 | SkScalar surfaceScale, |
| 332 | SkScalar kd); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 333 | |
| 334 | static const char* Name() { return "DiffuseLighting"; } |
| 335 | |
bsalomon@google.com | 422e81a | 2012-10-25 14:11:03 +0000 | [diff] [blame] | 336 | typedef GrGLDiffuseLightingEffect GLEffect; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 337 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 338 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 339 | virtual bool isEqual(const GrEffect&) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 340 | SkScalar kd() const { return fKD; } |
| 341 | private: |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 342 | GR_DECLARE_EFFECT_TEST; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 343 | typedef GrLightingEffect INHERITED; |
| 344 | SkScalar fKD; |
| 345 | }; |
| 346 | |
| 347 | class GrSpecularLightingEffect : public GrLightingEffect { |
| 348 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 349 | GrSpecularLightingEffect(GrTexture* texture, |
| 350 | const SkLight* light, |
| 351 | SkScalar surfaceScale, |
| 352 | SkScalar ks, |
| 353 | SkScalar shininess); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 354 | |
| 355 | static const char* Name() { return "SpecularLighting"; } |
| 356 | |
bsalomon@google.com | 422e81a | 2012-10-25 14:11:03 +0000 | [diff] [blame] | 357 | typedef GrGLSpecularLightingEffect GLEffect; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 358 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 359 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 360 | virtual bool isEqual(const GrEffect&) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 361 | SkScalar ks() const { return fKS; } |
| 362 | SkScalar shininess() const { return fShininess; } |
| 363 | |
| 364 | private: |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 365 | GR_DECLARE_EFFECT_TEST; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 366 | typedef GrLightingEffect INHERITED; |
| 367 | SkScalar fKS; |
| 368 | SkScalar fShininess; |
| 369 | }; |
| 370 | |
| 371 | /////////////////////////////////////////////////////////////////////////////// |
| 372 | |
| 373 | class GrGLLight { |
| 374 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 375 | virtual ~GrGLLight() {} |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 376 | |
| 377 | /** |
| 378 | * This is called by GrGLLightingEffect::emitCode() before either of the two virtual functions |
| 379 | * below. It adds a vec3f uniform visible in the FS that represents the constant light color. |
| 380 | */ |
| 381 | void emitLightColorUniform(GrGLShaderBuilder*); |
| 382 | |
skia.committer@gmail.com | e862d16 | 2012-10-31 02:01:18 +0000 | [diff] [blame] | 383 | /** |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 384 | * These two functions are called from GrGLLightingEffect's emitCode() function. |
| 385 | * emitSurfaceToLight places an expression in param out that is the vector from the surface to |
| 386 | * the light. The expression will be used in the FS. emitLightColor writes an expression into |
| 387 | * the FS that is the color of the light. Either function may add functions and/or uniforms to |
| 388 | * the FS. The default of emitLightColor appends the name of the constant light color uniform |
| 389 | * and so this function only needs to be overridden if the light color varies spatially. |
| 390 | */ |
| 391 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, SkString* out, const char* z) = 0; |
| 392 | virtual void emitLightColor(GrGLShaderBuilder*, const char *surfaceToLight); |
| 393 | |
| 394 | // This is called from GrGLLightingEffect's setData(). Subclasses of GrGLLight must call |
| 395 | // INHERITED::setData(). |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 396 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 397 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 398 | protected: |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 399 | /** |
| 400 | * Gets the constant light color uniform. Subclasses can use this in their emitLightColor |
| 401 | * function. |
| 402 | */ |
| 403 | UniformHandle lightColorUni() const { return fColorUni; } |
| 404 | |
| 405 | private: |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 406 | UniformHandle fColorUni; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 407 | |
| 408 | typedef SkRefCnt INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 409 | }; |
| 410 | |
| 411 | /////////////////////////////////////////////////////////////////////////////// |
| 412 | |
| 413 | class GrGLDistantLight : public GrGLLight { |
| 414 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 415 | virtual ~GrGLDistantLight() {} |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 416 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 417 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, SkString* out, const char* z) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 418 | private: |
| 419 | typedef GrGLLight INHERITED; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 420 | UniformHandle fDirectionUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 421 | }; |
| 422 | |
| 423 | /////////////////////////////////////////////////////////////////////////////// |
| 424 | |
| 425 | class GrGLPointLight : public GrGLLight { |
| 426 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 427 | virtual ~GrGLPointLight() {} |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 428 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 429 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, SkString* out, const char* z) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 430 | private: |
| 431 | typedef GrGLLight INHERITED; |
| 432 | SkPoint3 fLocation; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 433 | UniformHandle fLocationUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 434 | }; |
| 435 | |
| 436 | /////////////////////////////////////////////////////////////////////////////// |
| 437 | |
| 438 | class GrGLSpotLight : public GrGLLight { |
| 439 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 440 | virtual ~GrGLSpotLight() {} |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 441 | virtual void setData(const GrGLUniformManager&, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 442 | virtual void emitSurfaceToLight(GrGLShaderBuilder*, SkString* out, const char* z) SK_OVERRIDE; |
| 443 | virtual void emitLightColor(GrGLShaderBuilder*, const char *surfaceToLight) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 444 | private: |
| 445 | typedef GrGLLight INHERITED; |
| 446 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 447 | SkString fLightColorFunc; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 448 | UniformHandle fLocationUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 449 | UniformHandle fExponentUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 450 | UniformHandle fCosOuterConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 451 | UniformHandle fCosInnerConeAngleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 452 | UniformHandle fConeScaleUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 453 | UniformHandle fSUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 454 | }; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 455 | #else |
| 456 | |
| 457 | class GrGLLight; |
| 458 | |
| 459 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 460 | |
| 461 | }; |
| 462 | |
| 463 | /////////////////////////////////////////////////////////////////////////////// |
| 464 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 465 | class SkLight : public SkFlattenable { |
| 466 | public: |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 467 | SK_DECLARE_INST_COUNT(SkLight) |
| 468 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 469 | enum LightType { |
| 470 | kDistant_LightType, |
| 471 | kPoint_LightType, |
| 472 | kSpot_LightType, |
| 473 | }; |
| 474 | virtual LightType type() const = 0; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 475 | const SkPoint3& color() const { return fColor; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 476 | virtual GrGLLight* createGLLight() const = 0; |
| 477 | virtual bool isEqual(const SkLight& other) const { |
| 478 | return fColor == other.fColor; |
| 479 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 480 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 481 | protected: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 482 | SkLight(SkColor color) |
| 483 | : fColor(SkIntToScalar(SkColorGetR(color)), |
| 484 | SkIntToScalar(SkColorGetG(color)), |
| 485 | SkIntToScalar(SkColorGetB(color))) {} |
| 486 | SkLight(SkFlattenableReadBuffer& buffer) |
| 487 | : INHERITED(buffer) { |
| 488 | fColor = readPoint3(buffer); |
| 489 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 490 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 491 | INHERITED::flatten(buffer); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 492 | writePoint3(fColor, buffer); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 493 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 494 | |
| 495 | private: |
| 496 | typedef SkFlattenable INHERITED; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 497 | SkPoint3 fColor; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 498 | }; |
| 499 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 500 | SK_DEFINE_INST_COUNT(SkLight) |
| 501 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 502 | /////////////////////////////////////////////////////////////////////////////// |
| 503 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 504 | class SkDistantLight : public SkLight { |
| 505 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 506 | SkDistantLight(const SkPoint3& direction, SkColor color) |
| 507 | : INHERITED(color), fDirection(direction) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 508 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 509 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 510 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 511 | return fDirection; |
| 512 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 513 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 514 | virtual LightType type() const { return kDistant_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 515 | const SkPoint3& direction() const { return fDirection; } |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 516 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
| 517 | #if SK_SUPPORT_GPU |
| 518 | return SkNEW(GrGLDistantLight); |
| 519 | #else |
| 520 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 521 | return NULL; |
| 522 | #endif |
| 523 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 524 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
| 525 | if (other.type() != kDistant_LightType) { |
| 526 | return false; |
| 527 | } |
| 528 | |
| 529 | const SkDistantLight& o = static_cast<const SkDistantLight&>(other); |
| 530 | return INHERITED::isEqual(other) && |
| 531 | fDirection == o.fDirection; |
| 532 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 533 | |
| 534 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight) |
| 535 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 536 | protected: |
| 537 | SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 538 | fDirection = readPoint3(buffer); |
| 539 | } |
| 540 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 541 | INHERITED::flatten(buffer); |
| 542 | writePoint3(fDirection, buffer); |
| 543 | } |
| 544 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 545 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 546 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 547 | SkPoint3 fDirection; |
| 548 | }; |
| 549 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 550 | /////////////////////////////////////////////////////////////////////////////// |
| 551 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 552 | class SkPointLight : public SkLight { |
| 553 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 554 | SkPointLight(const SkPoint3& location, SkColor color) |
| 555 | : INHERITED(color), fLocation(location) {} |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 556 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 557 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 558 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 559 | fLocation.fY - SkIntToScalar(y), |
| 560 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 561 | direction.normalize(); |
| 562 | return direction; |
| 563 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 564 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 565 | virtual LightType type() const { return kPoint_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 566 | const SkPoint3& location() const { return fLocation; } |
| 567 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 568 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 569 | return SkNEW(GrGLPointLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 570 | #else |
| 571 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 572 | return NULL; |
| 573 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 574 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 575 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 576 | if (other.type() != kPoint_LightType) { |
| 577 | return false; |
| 578 | } |
| 579 | const SkPointLight& o = static_cast<const SkPointLight&>(other); |
| 580 | return INHERITED::isEqual(other) && |
| 581 | fLocation == o.fLocation; |
| 582 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 583 | |
| 584 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight) |
| 585 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 586 | protected: |
| 587 | SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 588 | fLocation = readPoint3(buffer); |
| 589 | } |
| 590 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 591 | INHERITED::flatten(buffer); |
| 592 | writePoint3(fLocation, buffer); |
| 593 | } |
| 594 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 595 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 596 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 597 | SkPoint3 fLocation; |
| 598 | }; |
| 599 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 600 | /////////////////////////////////////////////////////////////////////////////// |
| 601 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 602 | class SkSpotLight : public SkLight { |
| 603 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 604 | SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, SkColor color) |
| 605 | : INHERITED(color), |
| 606 | fLocation(location), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 607 | fTarget(target), |
| 608 | fSpecularExponent(specularExponent) |
| 609 | { |
| 610 | fS = target - location; |
| 611 | fS.normalize(); |
| 612 | fCosOuterConeAngle = SkScalarCos(SkDegreesToRadians(cutoffAngle)); |
| 613 | const SkScalar antiAliasThreshold = SkFloatToScalar(0.016f); |
| 614 | fCosInnerConeAngle = fCosOuterConeAngle + antiAliasThreshold; |
| 615 | fConeScale = SkScalarInvert(antiAliasThreshold); |
| 616 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 617 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 618 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 619 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 620 | fLocation.fY - SkIntToScalar(y), |
| 621 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 622 | direction.normalize(); |
| 623 | return direction; |
| 624 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 625 | SkPoint3 lightColor(const SkPoint3& surfaceToLight) const { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 626 | SkScalar cosAngle = -surfaceToLight.dot(fS); |
| 627 | if (cosAngle < fCosOuterConeAngle) { |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 628 | return SkPoint3(0, 0, 0); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 629 | } |
| 630 | SkScalar scale = SkScalarPow(cosAngle, fSpecularExponent); |
| 631 | if (cosAngle < fCosInnerConeAngle) { |
| 632 | scale = SkScalarMul(scale, cosAngle - fCosOuterConeAngle); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 633 | return color() * SkScalarMul(scale, fConeScale); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 634 | } |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 635 | return color() * scale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 636 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 637 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 638 | #if SK_SUPPORT_GPU |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 639 | return SkNEW(GrGLSpotLight); |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 640 | #else |
| 641 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 642 | return NULL; |
| 643 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 644 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 645 | virtual LightType type() const { return kSpot_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 646 | const SkPoint3& location() const { return fLocation; } |
| 647 | const SkPoint3& target() const { return fTarget; } |
| 648 | SkScalar specularExponent() const { return fSpecularExponent; } |
| 649 | SkScalar cosInnerConeAngle() const { return fCosInnerConeAngle; } |
| 650 | SkScalar cosOuterConeAngle() const { return fCosOuterConeAngle; } |
| 651 | SkScalar coneScale() const { return fConeScale; } |
senorblanco@chromium.org | eb31184 | 2012-07-11 20:49:26 +0000 | [diff] [blame] | 652 | const SkPoint3& s() const { return fS; } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 653 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 654 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpotLight) |
| 655 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 656 | protected: |
| 657 | SkSpotLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 658 | fLocation = readPoint3(buffer); |
| 659 | fTarget = readPoint3(buffer); |
| 660 | fSpecularExponent = buffer.readScalar(); |
| 661 | fCosOuterConeAngle = buffer.readScalar(); |
| 662 | fCosInnerConeAngle = buffer.readScalar(); |
| 663 | fConeScale = buffer.readScalar(); |
| 664 | fS = readPoint3(buffer); |
| 665 | } |
| 666 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 667 | INHERITED::flatten(buffer); |
| 668 | writePoint3(fLocation, buffer); |
| 669 | writePoint3(fTarget, buffer); |
| 670 | buffer.writeScalar(fSpecularExponent); |
| 671 | buffer.writeScalar(fCosOuterConeAngle); |
| 672 | buffer.writeScalar(fCosInnerConeAngle); |
| 673 | buffer.writeScalar(fConeScale); |
| 674 | writePoint3(fS, buffer); |
| 675 | } |
| 676 | |
senorblanco@chromium.org | bd9fad6 | 2012-07-11 16:25:37 +0000 | [diff] [blame] | 677 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 678 | if (other.type() != kSpot_LightType) { |
| 679 | return false; |
| 680 | } |
| 681 | |
| 682 | const SkSpotLight& o = static_cast<const SkSpotLight&>(other); |
| 683 | return INHERITED::isEqual(other) && |
| 684 | fLocation == o.fLocation && |
| 685 | fTarget == o.fTarget && |
| 686 | fSpecularExponent == o.fSpecularExponent && |
| 687 | fCosOuterConeAngle == o.fCosOuterConeAngle; |
| 688 | } |
| 689 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 690 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 691 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 692 | SkPoint3 fLocation; |
| 693 | SkPoint3 fTarget; |
| 694 | SkScalar fSpecularExponent; |
| 695 | SkScalar fCosOuterConeAngle; |
| 696 | SkScalar fCosInnerConeAngle; |
| 697 | SkScalar fConeScale; |
| 698 | SkPoint3 fS; |
| 699 | }; |
| 700 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 701 | /////////////////////////////////////////////////////////////////////////////// |
| 702 | |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 703 | SkLightingImageFilter::SkLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkImageFilter* input) |
| 704 | : INHERITED(input), |
| 705 | fLight(light), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 706 | fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255))) |
| 707 | { |
| 708 | SkASSERT(fLight); |
reed@google.com | 51f3866 | 2012-06-27 14:24:29 +0000 | [diff] [blame] | 709 | // our caller knows that we take ownership of the light, so we don't |
| 710 | // need to call ref() here. |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 714 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 715 | SkScalar kd, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 716 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 717 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, kd, |
| 718 | input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | SkImageFilter* SkLightingImageFilter::CreatePointLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 722 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 723 | SkScalar kd, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 724 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 725 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, kd, |
| 726 | input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | SkImageFilter* SkLightingImageFilter::CreateSpotLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 730 | const SkPoint3& location, const SkPoint3& target, |
| 731 | SkScalar specularExponent, SkScalar cutoffAngle, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 732 | SkColor lightColor, SkScalar surfaceScale, SkScalar kd, |
| 733 | SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 734 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 735 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, |
| 736 | cutoffAngle, lightColor)), |
| 737 | surfaceScale, kd, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | SkImageFilter* SkLightingImageFilter::CreateDistantLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 741 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 742 | SkScalar ks, SkScalar shininess, SkImageFilter* input) { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 743 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 744 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), |
| 745 | surfaceScale, ks, shininess, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | SkImageFilter* SkLightingImageFilter::CreatePointLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 749 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 750 | SkScalar ks, SkScalar shininess, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 751 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 752 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), |
| 753 | surfaceScale, ks, shininess, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | SkImageFilter* SkLightingImageFilter::CreateSpotLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 757 | const SkPoint3& location, const SkPoint3& target, |
| 758 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 759 | SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 760 | SkScalar ks, SkScalar shininess, SkImageFilter* input) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame] | 761 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 762 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 763 | surfaceScale, ks, shininess, input)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 764 | } |
| 765 | |
| 766 | SkLightingImageFilter::~SkLightingImageFilter() { |
| 767 | fLight->unref(); |
| 768 | } |
| 769 | |
| 770 | SkLightingImageFilter::SkLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 771 | : INHERITED(buffer) |
| 772 | { |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 773 | fLight = buffer.readFlattenableT<SkLight>(); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 774 | fSurfaceScale = buffer.readScalar(); |
| 775 | } |
| 776 | |
| 777 | void SkLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 778 | this->INHERITED::flatten(buffer); |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 779 | buffer.writeFlattenable(fLight); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 780 | buffer.writeScalar(fSurfaceScale); |
| 781 | } |
| 782 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 783 | /////////////////////////////////////////////////////////////////////////////// |
| 784 | |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 785 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd, SkImageFilter* input) |
| 786 | : SkLightingImageFilter(light, surfaceScale, input), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 787 | fKD(kd) |
| 788 | { |
| 789 | } |
| 790 | |
| 791 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 792 | : INHERITED(buffer) |
| 793 | { |
| 794 | fKD = buffer.readScalar(); |
| 795 | } |
| 796 | |
| 797 | void SkDiffuseLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 798 | this->INHERITED::flatten(buffer); |
| 799 | buffer.writeScalar(fKD); |
| 800 | } |
| 801 | |
| 802 | bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*, |
| 803 | const SkBitmap& src, |
| 804 | const SkMatrix&, |
| 805 | SkBitmap* dst, |
| 806 | SkIPoint*) { |
| 807 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 808 | return false; |
| 809 | } |
| 810 | SkAutoLockPixels alp(src); |
| 811 | if (!src.getPixels()) { |
| 812 | return false; |
| 813 | } |
| 814 | if (src.width() < 2 || src.height() < 2) { |
| 815 | return false; |
| 816 | } |
| 817 | dst->setConfig(src.config(), src.width(), src.height()); |
| 818 | dst->allocPixels(); |
| 819 | |
| 820 | DiffuseLightingType lightingType(fKD); |
| 821 | switch (light()->type()) { |
| 822 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 823 | lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 824 | break; |
| 825 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 826 | lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 827 | break; |
| 828 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 829 | lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 830 | break; |
| 831 | } |
| 832 | return true; |
| 833 | } |
| 834 | |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 835 | bool SkDiffuseLightingImageFilter::asNewEffect(GrEffect** effect, |
bsalomon@google.com | 8ea78d8 | 2012-10-24 20:11:30 +0000 | [diff] [blame] | 836 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 837 | #if SK_SUPPORT_GPU |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 838 | if (effect) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 839 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 840 | *effect = SkNEW_ARGS(GrDiffuseLightingEffect, (texture, light(), scale, kd())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 841 | } |
| 842 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 843 | #else |
| 844 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 845 | return false; |
| 846 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | /////////////////////////////////////////////////////////////////////////////// |
| 850 | |
senorblanco@chromium.org | 254eae2 | 2012-10-05 17:38:00 +0000 | [diff] [blame] | 851 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess, SkImageFilter* input) |
| 852 | : SkLightingImageFilter(light, surfaceScale, input), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 853 | fKS(ks), |
| 854 | fShininess(shininess) |
| 855 | { |
| 856 | } |
| 857 | |
| 858 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 859 | : INHERITED(buffer) |
| 860 | { |
| 861 | fKS = buffer.readScalar(); |
| 862 | fShininess = buffer.readScalar(); |
| 863 | } |
| 864 | |
| 865 | void SkSpecularLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 866 | this->INHERITED::flatten(buffer); |
| 867 | buffer.writeScalar(fKS); |
| 868 | buffer.writeScalar(fShininess); |
| 869 | } |
| 870 | |
| 871 | bool SkSpecularLightingImageFilter::onFilterImage(Proxy*, |
| 872 | const SkBitmap& src, |
| 873 | const SkMatrix&, |
| 874 | SkBitmap* dst, |
| 875 | SkIPoint*) { |
| 876 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 877 | return false; |
| 878 | } |
| 879 | SkAutoLockPixels alp(src); |
| 880 | if (!src.getPixels()) { |
| 881 | return false; |
| 882 | } |
| 883 | if (src.width() < 2 || src.height() < 2) { |
| 884 | return false; |
| 885 | } |
| 886 | dst->setConfig(src.config(), src.width(), src.height()); |
| 887 | dst->allocPixels(); |
| 888 | |
| 889 | SpecularLightingType lightingType(fKS, fShininess); |
| 890 | switch (light()->type()) { |
| 891 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 892 | lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 893 | break; |
| 894 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 895 | lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 896 | break; |
| 897 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 898 | lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 899 | break; |
| 900 | } |
| 901 | return true; |
| 902 | } |
| 903 | |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 904 | bool SkSpecularLightingImageFilter::asNewEffect(GrEffect** effect, |
bsalomon@google.com | 8ea78d8 | 2012-10-24 20:11:30 +0000 | [diff] [blame] | 905 | GrTexture* texture) const { |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 906 | #if SK_SUPPORT_GPU |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 907 | if (effect) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 908 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 909 | *effect = SkNEW_ARGS(GrSpecularLightingEffect, (texture, light(), scale, ks(), shininess())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 910 | } |
| 911 | return true; |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 912 | #else |
| 913 | SkDEBUGFAIL("Should not call in GPU-less build"); |
| 914 | return false; |
| 915 | #endif |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | /////////////////////////////////////////////////////////////////////////////// |
| 919 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 920 | #if SK_SUPPORT_GPU |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 921 | |
| 922 | namespace { |
| 923 | SkPoint3 random_point3(SkRandom* random) { |
| 924 | return SkPoint3(SkScalarToFloat(random->nextSScalar1()), |
| 925 | SkScalarToFloat(random->nextSScalar1()), |
| 926 | SkScalarToFloat(random->nextSScalar1())); |
| 927 | } |
| 928 | |
| 929 | SkLight* create_random_light(SkRandom* random) { |
| 930 | int type = random->nextULessThan(3); |
| 931 | switch (type) { |
| 932 | case 0: { |
| 933 | return SkNEW_ARGS(SkDistantLight, (random_point3(random), random->nextU())); |
| 934 | } |
| 935 | case 1: { |
| 936 | return SkNEW_ARGS(SkPointLight, (random_point3(random), random->nextU())); |
| 937 | } |
| 938 | case 2: { |
| 939 | return SkNEW_ARGS(SkSpotLight, (random_point3(random), |
| 940 | random_point3(random), |
| 941 | random->nextUScalar1(), |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 942 | random->nextUScalar1(), |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 943 | random->nextU())); |
| 944 | } |
| 945 | default: |
| 946 | GrCrash(); |
| 947 | return NULL; |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | } |
| 952 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 953 | class GrGLLightingEffect : public GrGLEffect { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 954 | public: |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 955 | GrGLLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 956 | const GrEffect& effect); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 957 | virtual ~GrGLLightingEffect(); |
| 958 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 959 | virtual void emitCode(GrGLShaderBuilder*, |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 960 | const GrEffectStage&, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 961 | EffectKey, |
| 962 | const char* vertexCoords, |
| 963 | const char* outputColor, |
| 964 | const char* inputColor, |
| 965 | const TextureSamplerArray&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 966 | |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 967 | static inline EffectKey GenKey(const GrEffectStage&, const GrGLCaps&); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 968 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 969 | /** |
| 970 | * Subclasses of GrGLLightingEffect must call INHERITED::setData(); |
| 971 | */ |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 972 | virtual void setData(const GrGLUniformManager&, const GrEffectStage&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 973 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 974 | protected: |
| 975 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) = 0; |
| 976 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 977 | private: |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 978 | typedef GrGLEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 979 | |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 980 | UniformHandle fImageIncrementUni; |
| 981 | UniformHandle fSurfaceScaleUni; |
| 982 | GrGLLight* fLight; |
| 983 | GrGLEffectMatrix fEffectMatrix; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 984 | }; |
| 985 | |
| 986 | /////////////////////////////////////////////////////////////////////////////// |
| 987 | |
| 988 | class GrGLDiffuseLightingEffect : public GrGLLightingEffect { |
| 989 | public: |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 990 | GrGLDiffuseLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 991 | const GrEffect& effect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 992 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) SK_OVERRIDE; |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 993 | virtual void setData(const GrGLUniformManager&, const GrEffectStage&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 994 | |
| 995 | private: |
| 996 | typedef GrGLLightingEffect INHERITED; |
| 997 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 998 | UniformHandle fKDUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 999 | }; |
| 1000 | |
| 1001 | /////////////////////////////////////////////////////////////////////////////// |
| 1002 | |
| 1003 | class GrGLSpecularLightingEffect : public GrGLLightingEffect { |
| 1004 | public: |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1005 | GrGLSpecularLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 1006 | const GrEffect& effect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1007 | virtual void emitLightFunc(GrGLShaderBuilder*, SkString* funcName) SK_OVERRIDE; |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 1008 | virtual void setData(const GrGLUniformManager&, const GrEffectStage&) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1009 | |
| 1010 | private: |
| 1011 | typedef GrGLLightingEffect INHERITED; |
| 1012 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1013 | UniformHandle fKSUni; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1014 | UniformHandle fShininessUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1015 | }; |
| 1016 | |
| 1017 | /////////////////////////////////////////////////////////////////////////////// |
| 1018 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1019 | GrLightingEffect::GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale) |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1020 | : INHERITED(texture, MakeDivByTextureWHMatrix(texture)) |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1021 | , fLight(light) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1022 | , fSurfaceScale(surfaceScale) { |
| 1023 | fLight->ref(); |
| 1024 | } |
| 1025 | |
| 1026 | GrLightingEffect::~GrLightingEffect() { |
| 1027 | fLight->unref(); |
| 1028 | } |
| 1029 | |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 1030 | bool GrLightingEffect::isEqual(const GrEffect& sBase) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1031 | const GrLightingEffect& s = |
| 1032 | static_cast<const GrLightingEffect&>(sBase); |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1033 | return INHERITED::isEqual(sBase) && |
| 1034 | fLight->isEqual(*s.fLight) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1035 | fSurfaceScale == s.fSurfaceScale; |
| 1036 | } |
| 1037 | |
| 1038 | /////////////////////////////////////////////////////////////////////////////// |
| 1039 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1040 | GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 1041 | : INHERITED(texture, light, surfaceScale), fKD(kd) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1042 | } |
| 1043 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1044 | const GrBackendEffectFactory& GrDiffuseLightingEffect::getFactory() const { |
| 1045 | return GrTBackendEffectFactory<GrDiffuseLightingEffect>::getInstance(); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1046 | } |
| 1047 | |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 1048 | bool GrDiffuseLightingEffect::isEqual(const GrEffect& sBase) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1049 | const GrDiffuseLightingEffect& s = |
| 1050 | static_cast<const GrDiffuseLightingEffect&>(sBase); |
| 1051 | return INHERITED::isEqual(sBase) && |
| 1052 | this->kd() == s.kd(); |
| 1053 | } |
| 1054 | |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 1055 | GR_DEFINE_EFFECT_TEST(GrDiffuseLightingEffect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1056 | |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 1057 | GrEffect* GrDiffuseLightingEffect::TestCreate(SkRandom* random, |
| 1058 | GrContext* context, |
| 1059 | GrTexture* textures[]) { |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1060 | SkScalar surfaceScale = random->nextSScalar1(); |
| 1061 | SkScalar kd = random->nextUScalar1(); |
| 1062 | SkAutoTUnref<SkLight> light(create_random_light(random)); |
bsalomon@google.com | 6f261be | 2012-10-24 19:07:10 +0000 | [diff] [blame] | 1063 | return SkNEW_ARGS(GrDiffuseLightingEffect, (textures[GrEffectUnitTest::kAlphaTextureIdx], |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1064 | light, surfaceScale, kd)); |
| 1065 | } |
| 1066 | |
| 1067 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1068 | /////////////////////////////////////////////////////////////////////////////// |
| 1069 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1070 | GrGLLightingEffect::GrGLLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 1071 | const GrEffect& effect) |
bsalomon@google.com | 374e759 | 2012-10-23 17:30:45 +0000 | [diff] [blame] | 1072 | : INHERITED(factory) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1073 | , fImageIncrementUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1074 | , fSurfaceScaleUni(kInvalidUniformHandle) { |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 1075 | const GrLightingEffect& m = static_cast<const GrLightingEffect&>(effect); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1076 | fLight = m.light()->createGLLight(); |
| 1077 | } |
| 1078 | |
| 1079 | GrGLLightingEffect::~GrGLLightingEffect() { |
| 1080 | delete fLight; |
| 1081 | } |
| 1082 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1083 | void GrGLLightingEffect::emitCode(GrGLShaderBuilder* builder, |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 1084 | const GrEffectStage&, |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1085 | EffectKey key, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1086 | const char* vertexCoords, |
| 1087 | const char* outputColor, |
| 1088 | const char* inputColor, |
| 1089 | const TextureSamplerArray& samplers) { |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1090 | const char* coords; |
| 1091 | fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, vertexCoords, &coords); |
| 1092 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1093 | fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1094 | kVec2f_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1095 | "ImageIncrement"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1096 | fSurfaceScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1097 | kFloat_GrSLType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1098 | "SurfaceScale"); |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1099 | fLight->emitLightColorUniform(builder); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1100 | SkString* code = &builder->fFSCode; |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1101 | SkString lightFunc; |
| 1102 | this->emitLightFunc(builder, &lightFunc); |
| 1103 | static const GrGLShaderVar gSobelArgs[] = { |
| 1104 | GrGLShaderVar("a", kFloat_GrSLType), |
| 1105 | GrGLShaderVar("b", kFloat_GrSLType), |
| 1106 | GrGLShaderVar("c", kFloat_GrSLType), |
| 1107 | GrGLShaderVar("d", kFloat_GrSLType), |
| 1108 | GrGLShaderVar("e", kFloat_GrSLType), |
| 1109 | GrGLShaderVar("f", kFloat_GrSLType), |
| 1110 | GrGLShaderVar("scale", kFloat_GrSLType), |
| 1111 | }; |
| 1112 | SkString sobelFuncName; |
| 1113 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1114 | kFloat_GrSLType, |
| 1115 | "sobel", |
| 1116 | SK_ARRAY_COUNT(gSobelArgs), |
| 1117 | gSobelArgs, |
| 1118 | "\treturn (-a + b - 2.0 * c + 2.0 * d -e + f) * scale;\n", |
| 1119 | &sobelFuncName); |
| 1120 | static const GrGLShaderVar gPointToNormalArgs[] = { |
| 1121 | GrGLShaderVar("x", kFloat_GrSLType), |
| 1122 | GrGLShaderVar("y", kFloat_GrSLType), |
| 1123 | GrGLShaderVar("scale", kFloat_GrSLType), |
| 1124 | }; |
| 1125 | SkString pointToNormalName; |
| 1126 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1127 | kVec3f_GrSLType, |
| 1128 | "pointToNormal", |
| 1129 | SK_ARRAY_COUNT(gPointToNormalArgs), |
| 1130 | gPointToNormalArgs, |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1131 | "\treturn normalize(vec3(-x * scale, y * scale, 1));\n", |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1132 | &pointToNormalName); |
| 1133 | |
| 1134 | static const GrGLShaderVar gInteriorNormalArgs[] = { |
| 1135 | GrGLShaderVar("m", kFloat_GrSLType, 9), |
| 1136 | GrGLShaderVar("surfaceScale", kFloat_GrSLType), |
| 1137 | }; |
| 1138 | SkString interiorNormalBody; |
| 1139 | interiorNormalBody.appendf("\treturn %s(%s(m[0], m[2], m[3], m[5], m[6], m[8], 0.25),\n" |
| 1140 | "\t %s(m[0], m[6], m[1], m[7], m[2], m[8], 0.25),\n" |
| 1141 | "\t surfaceScale);\n", |
| 1142 | pointToNormalName.c_str(), |
| 1143 | sobelFuncName.c_str(), |
| 1144 | sobelFuncName.c_str()); |
| 1145 | SkString interiorNormalName; |
| 1146 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1147 | kVec3f_GrSLType, |
| 1148 | "interiorNormal", |
| 1149 | SK_ARRAY_COUNT(gInteriorNormalArgs), |
| 1150 | gInteriorNormalArgs, |
| 1151 | interiorNormalBody.c_str(), |
| 1152 | &interiorNormalName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1153 | |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1154 | code->appendf("\t\tvec2 coord = %s;\n", coords); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1155 | code->appendf("\t\tfloat m[9];\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1156 | |
| 1157 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1158 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1159 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1160 | int index = 0; |
| 1161 | for (int dy = -1; dy <= 1; dy++) { |
| 1162 | for (int dx = -1; dx <= 1; dx++) { |
| 1163 | SkString texCoords; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1164 | texCoords.appendf("coord + vec2(%d, %d) * %s", dx, dy, imgInc); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1165 | code->appendf("\t\tm[%d] = ", index++); |
bsalomon@google.com | f06df1b | 2012-09-06 20:22:31 +0000 | [diff] [blame] | 1166 | builder->appendTextureLookup(code, samplers[0], texCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1167 | code->appendf(".a;\n"); |
| 1168 | } |
| 1169 | } |
| 1170 | code->appendf("\t\tvec3 surfaceToLight = "); |
| 1171 | SkString arg; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1172 | arg.appendf("%s * m[4]", surfScale); |
| 1173 | fLight->emitSurfaceToLight(builder, code, arg.c_str()); |
bsalomon@google.com | 868a8e7 | 2012-08-30 19:11:34 +0000 | [diff] [blame] | 1174 | code->append(";\n"); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1175 | code->appendf("\t\t%s = %s(%s(m, %s), surfaceToLight, ", |
| 1176 | outputColor, lightFunc.c_str(), interiorNormalName.c_str(), surfScale); |
| 1177 | fLight->emitLightColor(builder, "surfaceToLight"); |
bsalomon@google.com | 868a8e7 | 2012-08-30 19:11:34 +0000 | [diff] [blame] | 1178 | code->append(");\n"); |
| 1179 | GrGLSLMulVarBy4f(code, 2, outputColor, inputColor); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1180 | } |
| 1181 | |
bsalomon@google.com | 2eaaefd | 2012-10-29 19:51:22 +0000 | [diff] [blame] | 1182 | GrGLEffect::EffectKey GrGLLightingEffect::GenKey(const GrEffectStage& s, |
| 1183 | const GrGLCaps& caps) { |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1184 | const GrLightingEffect& effect = static_cast<const GrLightingEffect&>(*s.getEffect()); |
| 1185 | EffectKey key = static_cast<const GrLightingEffect&>(*s.getEffect()).light()->type(); |
| 1186 | key <<= GrGLEffectMatrix::kKeyBits; |
| 1187 | EffectKey matrixKey = GrGLEffectMatrix::GenKey(effect.getMatrix(), |
| 1188 | s.getCoordChangeMatrix(), |
| 1189 | effect.texture(0)); |
| 1190 | return key | matrixKey; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1191 | } |
| 1192 | |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 1193 | void GrGLLightingEffect::setData(const GrGLUniformManager& uman, const GrEffectStage& stage) { |
| 1194 | const GrLightingEffect& effect =static_cast<const GrLightingEffect&>(*stage.getEffect()); |
bsalomon@google.com | 2d0bade | 2012-10-26 19:01:17 +0000 | [diff] [blame] | 1195 | GrTexture* texture = effect.texture(0); |
| 1196 | float ySign = texture->origin() == GrSurface::kTopLeft_Origin ? -1.0f : 1.0f; |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1197 | uman.set2f(fImageIncrementUni, 1.0f / texture->width(), ySign / texture->height()); |
| 1198 | uman.set1f(fSurfaceScaleUni, effect.surfaceScale()); |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1199 | fLight->setData(uman, effect.light()); |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1200 | fEffectMatrix.setData(uman, |
| 1201 | effect.getMatrix(), |
| 1202 | stage.getCoordChangeMatrix(), |
| 1203 | effect.texture(0)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1204 | } |
| 1205 | |
| 1206 | /////////////////////////////////////////////////////////////////////////////// |
| 1207 | |
| 1208 | /////////////////////////////////////////////////////////////////////////////// |
| 1209 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1210 | GrGLDiffuseLightingEffect::GrGLDiffuseLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | 17fc651 | 2012-11-02 21:45:01 +0000 | [diff] [blame] | 1211 | const GrEffect& effect) |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 1212 | : INHERITED(factory, effect) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1213 | , fKDUni(kInvalidUniformHandle) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1216 | void GrGLDiffuseLightingEffect::emitLightFunc(GrGLShaderBuilder* builder, SkString* funcName) { |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1217 | const char* kd; |
| 1218 | fKDUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1219 | kFloat_GrSLType, |
| 1220 | "KD", |
| 1221 | &kd); |
| 1222 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1223 | static const GrGLShaderVar gLightArgs[] = { |
| 1224 | GrGLShaderVar("normal", kVec3f_GrSLType), |
| 1225 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType), |
| 1226 | GrGLShaderVar("lightColor", kVec3f_GrSLType) |
| 1227 | }; |
| 1228 | SkString lightBody; |
| 1229 | lightBody.appendf("\tfloat colorScale = %s * dot(normal, surfaceToLight);\n", kd); |
| 1230 | lightBody.appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
| 1231 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1232 | kVec4f_GrSLType, |
| 1233 | "light", |
| 1234 | SK_ARRAY_COUNT(gLightArgs), |
| 1235 | gLightArgs, |
| 1236 | lightBody.c_str(), |
| 1237 | funcName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1238 | } |
| 1239 | |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 1240 | void GrGLDiffuseLightingEffect::setData(const GrGLUniformManager& uman, |
| 1241 | const GrEffectStage& stage) { |
| 1242 | INHERITED::setData(uman, stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1243 | const GrDiffuseLightingEffect& effect = |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 1244 | static_cast<const GrDiffuseLightingEffect&>(*stage.getEffect()); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1245 | uman.set1f(fKDUni, effect.kd()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1246 | } |
| 1247 | |
| 1248 | /////////////////////////////////////////////////////////////////////////////// |
| 1249 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1250 | GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 1251 | : INHERITED(texture, light, surfaceScale), |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1252 | fKS(ks), |
| 1253 | fShininess(shininess) { |
| 1254 | } |
| 1255 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1256 | const GrBackendEffectFactory& GrSpecularLightingEffect::getFactory() const { |
| 1257 | return GrTBackendEffectFactory<GrSpecularLightingEffect>::getInstance(); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1258 | } |
| 1259 | |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 1260 | bool GrSpecularLightingEffect::isEqual(const GrEffect& sBase) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1261 | const GrSpecularLightingEffect& s = |
| 1262 | static_cast<const GrSpecularLightingEffect&>(sBase); |
| 1263 | return INHERITED::isEqual(sBase) && |
| 1264 | this->ks() == s.ks() && |
| 1265 | this->shininess() == s.shininess(); |
| 1266 | } |
| 1267 | |
bsalomon@google.com | f271cc7 | 2012-10-24 19:35:13 +0000 | [diff] [blame] | 1268 | GR_DEFINE_EFFECT_TEST(GrSpecularLightingEffect); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1269 | |
bsalomon@google.com | a469c28 | 2012-10-24 18:28:34 +0000 | [diff] [blame] | 1270 | GrEffect* GrSpecularLightingEffect::TestCreate(SkRandom* random, |
| 1271 | GrContext* context, |
| 1272 | GrTexture* textures[]) { |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1273 | SkScalar surfaceScale = random->nextSScalar1(); |
| 1274 | SkScalar ks = random->nextUScalar1(); |
| 1275 | SkScalar shininess = random->nextUScalar1(); |
| 1276 | SkAutoTUnref<SkLight> light(create_random_light(random)); |
bsalomon@google.com | 6f261be | 2012-10-24 19:07:10 +0000 | [diff] [blame] | 1277 | return SkNEW_ARGS(GrSpecularLightingEffect, (textures[GrEffectUnitTest::kAlphaTextureIdx], |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1278 | light, surfaceScale, ks, shininess)); |
| 1279 | } |
| 1280 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1281 | /////////////////////////////////////////////////////////////////////////////// |
| 1282 | |
bsalomon@google.com | 396e61f | 2012-10-25 19:00:29 +0000 | [diff] [blame] | 1283 | GrGLSpecularLightingEffect::GrGLSpecularLightingEffect(const GrBackendEffectFactory& factory, |
bsalomon@google.com | 021fc73 | 2012-10-25 12:47:42 +0000 | [diff] [blame] | 1284 | const GrEffect& effect) |
| 1285 | : GrGLLightingEffect(factory, effect) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1286 | , fKSUni(kInvalidUniformHandle) |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1287 | , fShininessUni(kInvalidUniformHandle) { |
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 | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1291 | const char* ks; |
| 1292 | const char* shininess; |
| 1293 | |
| 1294 | fKSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1295 | kFloat_GrSLType, "KS", &ks); |
| 1296 | fShininessUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1297 | kFloat_GrSLType, "Shininess", &shininess); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1298 | |
| 1299 | static const GrGLShaderVar gLightArgs[] = { |
| 1300 | GrGLShaderVar("normal", kVec3f_GrSLType), |
| 1301 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType), |
| 1302 | GrGLShaderVar("lightColor", kVec3f_GrSLType) |
| 1303 | }; |
| 1304 | SkString lightBody; |
| 1305 | lightBody.appendf("\tvec3 halfDir = vec3(normalize(surfaceToLight + vec3(0, 0, 1)));\n"); |
| 1306 | lightBody.appendf("\tfloat colorScale = %s * pow(dot(normal, halfDir), %s);\n", ks, shininess); |
senorblanco@chromium.org | 7b734e0 | 2012-10-29 19:47:06 +0000 | [diff] [blame] | 1307 | lightBody.appendf("\tvec3 color = lightColor * clamp(colorScale, 0.0, 1.0);\n"); |
| 1308 | lightBody.appendf("\treturn vec4(color, max(max(color.r, color.g), color.b));\n"); |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1309 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1310 | kVec4f_GrSLType, |
| 1311 | "light", |
| 1312 | SK_ARRAY_COUNT(gLightArgs), |
| 1313 | gLightArgs, |
| 1314 | lightBody.c_str(), |
| 1315 | funcName); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1316 | } |
| 1317 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1318 | void GrGLSpecularLightingEffect::setData(const GrGLUniformManager& uman, |
bsalomon@google.com | 28a15fb | 2012-10-26 17:53:18 +0000 | [diff] [blame] | 1319 | const GrEffectStage& stage) { |
| 1320 | INHERITED::setData(uman, stage); |
| 1321 | const GrSpecularLightingEffect& effect = |
| 1322 | static_cast<const GrSpecularLightingEffect&>(*stage.getEffect()); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1323 | uman.set1f(fKSUni, effect.ks()); |
| 1324 | uman.set1f(fShininessUni, effect.shininess()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1325 | } |
| 1326 | |
| 1327 | /////////////////////////////////////////////////////////////////////////////// |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1328 | void GrGLLight::emitLightColorUniform(GrGLShaderBuilder* builder) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1329 | fColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
bsalomon@google.com | 777c3aa | 2012-07-25 20:58:20 +0000 | [diff] [blame] | 1330 | kVec3f_GrSLType, "LightColor"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1331 | } |
| 1332 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1333 | void GrGLLight::emitLightColor(GrGLShaderBuilder* builder, |
| 1334 | const char *surfaceToLight) { |
| 1335 | builder->fFSCode.append(builder->getUniformCStr(this->lightColorUni())); |
| 1336 | } |
| 1337 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1338 | void GrGLLight::setData(const GrGLUniformManager& uman, |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1339 | const SkLight* light) const { |
| 1340 | setUniformPoint3(uman, fColorUni, light->color() * SkScalarInvert(SkIntToScalar(255))); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1341 | } |
| 1342 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1343 | /////////////////////////////////////////////////////////////////////////////// |
| 1344 | |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1345 | void GrGLDistantLight::setData(const GrGLUniformManager& uman, const SkLight* light) const { |
| 1346 | INHERITED::setData(uman, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1347 | SkASSERT(light->type() == SkLight::kDistant_LightType); |
| 1348 | const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1349 | setUniformNormal3(uman, fDirectionUni, distantLight->direction()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1350 | } |
| 1351 | |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1352 | void GrGLDistantLight::emitSurfaceToLight(GrGLShaderBuilder* builder, |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1353 | SkString* out, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1354 | const char* z) { |
| 1355 | const char* dir; |
| 1356 | fDirectionUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1357 | "LightDirection", &dir); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1358 | out->append(dir); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1359 | } |
| 1360 | |
| 1361 | /////////////////////////////////////////////////////////////////////////////// |
| 1362 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1363 | void GrGLPointLight::setData(const GrGLUniformManager& uman, |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1364 | const SkLight* light) const { |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1365 | INHERITED::setData(uman, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1366 | SkASSERT(light->type() == SkLight::kPoint_LightType); |
| 1367 | const SkPointLight* pointLight = static_cast<const SkPointLight*>(light); |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1368 | setUniformPoint3(uman, fLocationUni, pointLight->location()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1369 | } |
| 1370 | |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1371 | void GrGLPointLight::emitSurfaceToLight(GrGLShaderBuilder* builder, |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1372 | SkString* out, |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1373 | const char* z) { |
| 1374 | const char* loc; |
| 1375 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1376 | "LightLocation", &loc); |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1377 | out->appendf("normalize(%s - vec3(%s.xy, %s))", loc, builder->fragmentPosition(), z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1378 | } |
| 1379 | |
| 1380 | /////////////////////////////////////////////////////////////////////////////// |
| 1381 | |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1382 | void GrGLSpotLight::setData(const GrGLUniformManager& uman, |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1383 | const SkLight* light) const { |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1384 | INHERITED::setData(uman, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1385 | SkASSERT(light->type() == SkLight::kSpot_LightType); |
| 1386 | const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light); |
bsalomon@google.com | 706f668 | 2012-10-23 14:53:55 +0000 | [diff] [blame] | 1387 | setUniformPoint3(uman, fLocationUni, spotLight->location()); |
bsalomon@google.com | dbbc4e2 | 2012-07-25 17:48:39 +0000 | [diff] [blame] | 1388 | uman.set1f(fExponentUni, spotLight->specularExponent()); |
| 1389 | uman.set1f(fCosInnerConeAngleUni, spotLight->cosInnerConeAngle()); |
| 1390 | uman.set1f(fCosOuterConeAngleUni, spotLight->cosOuterConeAngle()); |
| 1391 | uman.set1f(fConeScaleUni, spotLight->coneScale()); |
| 1392 | setUniformNormal3(uman, fSUni, spotLight->s()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1393 | } |
| 1394 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1395 | void GrGLSpotLight::emitSurfaceToLight(GrGLShaderBuilder* builder, |
| 1396 | SkString* out, |
| 1397 | const char* z) { |
| 1398 | const char* location; |
| 1399 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1400 | kVec3f_GrSLType, "LightLocation", &location); |
| 1401 | out->appendf("normalize(%s - vec3(%s.xy, %s))", location, builder->fragmentPosition(), z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1402 | } |
| 1403 | |
bsalomon@google.com | ae5ef11 | 2012-10-29 14:53:53 +0000 | [diff] [blame] | 1404 | void GrGLSpotLight::emitLightColor(GrGLShaderBuilder* builder, |
| 1405 | const char *surfaceToLight) { |
| 1406 | |
| 1407 | const char* color = builder->getUniformCStr(this->lightColorUni()); // created by parent class. |
| 1408 | |
| 1409 | const char* exponent; |
| 1410 | const char* cosInner; |
| 1411 | const char* cosOuter; |
| 1412 | const char* coneScale; |
| 1413 | const char* s; |
| 1414 | fExponentUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1415 | kFloat_GrSLType, "Exponent", &exponent); |
| 1416 | fCosInnerConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1417 | kFloat_GrSLType, "CosInnerConeAngle", &cosInner); |
| 1418 | fCosOuterConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1419 | kFloat_GrSLType, "CosOuterConeAngle", &cosOuter); |
| 1420 | fConeScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1421 | kFloat_GrSLType, "ConeScale", &coneScale); |
| 1422 | fSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1423 | kVec3f_GrSLType, "S", &s); |
| 1424 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1425 | static const GrGLShaderVar gLightColorArgs[] = { |
| 1426 | GrGLShaderVar("surfaceToLight", kVec3f_GrSLType) |
| 1427 | }; |
| 1428 | SkString lightColorBody; |
| 1429 | lightColorBody.appendf("\tfloat cosAngle = -dot(surfaceToLight, %s);\n", s); |
| 1430 | lightColorBody.appendf("\tif (cosAngle < %s) {\n", cosOuter); |
| 1431 | lightColorBody.appendf("\t\treturn vec3(0);\n"); |
| 1432 | lightColorBody.appendf("\t}\n"); |
| 1433 | lightColorBody.appendf("\tfloat scale = pow(cosAngle, %s);\n", exponent); |
| 1434 | lightColorBody.appendf("\tif (cosAngle < %s) {\n", cosInner); |
| 1435 | lightColorBody.appendf("\t\treturn %s * scale * (cosAngle - %s) * %s;\n", |
| 1436 | color, cosOuter, coneScale); |
| 1437 | lightColorBody.appendf("\t}\n"); |
| 1438 | lightColorBody.appendf("\treturn %s;\n", color); |
| 1439 | builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, |
| 1440 | kVec3f_GrSLType, |
| 1441 | "lightColor", |
| 1442 | SK_ARRAY_COUNT(gLightColorArgs), |
| 1443 | gLightColorArgs, |
| 1444 | lightColorBody.c_str(), |
| 1445 | &fLightColorFunc); |
skia.committer@gmail.com | e862d16 | 2012-10-31 02:01:18 +0000 | [diff] [blame] | 1446 | |
bsalomon@google.com | a1bf0ff | 2012-08-07 17:36:29 +0000 | [diff] [blame] | 1447 | builder->fFSCode.appendf("%s(%s)", fLightColorFunc.c_str(), surfaceToLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1448 | } |
| 1449 | |
bsalomon@google.com | cf8fb1f | 2012-08-02 14:03:32 +0000 | [diff] [blame] | 1450 | #endif |
| 1451 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 1452 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter) |
| 1453 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter) |
| 1454 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter) |
| 1455 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight) |
| 1456 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight) |
| 1457 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight) |
| 1458 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |