senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkLightingImageFilter.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkColorPriv.h" |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 11 | #include "SkTypes.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 12 | #include "GrProgramStageFactory.h" |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 13 | #include "effects/GrSingleTextureEffect.h" |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 14 | #include "gl/GrGLProgramStage.h" |
| 15 | #include "gl/GrGLSL.h" |
| 16 | #include "gl/GrGLTexture.h" |
| 17 | #include "GrCustomStage.h" |
| 18 | |
| 19 | class GrGLDiffuseLightingEffect; |
| 20 | class GrGLSpecularLightingEffect; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 21 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 22 | // For brevity, and these definitions are likely to move to a different class soon. |
| 23 | typedef GrGLShaderBuilder::UniformHandle UniformHandle; |
| 24 | static const UniformHandle kInvalidUniformHandle = GrGLShaderBuilder::kInvalidUniformHandle; |
| 25 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 26 | // FIXME: Eventually, this should be implemented properly, and put in |
| 27 | // SkScalar.h. |
| 28 | #define SkScalarPow(x, y) SkFloatToScalar(powf(SkScalarToFloat(x), SkScalarToFloat(y))) |
| 29 | namespace { |
| 30 | |
| 31 | const SkScalar gOneThird = SkScalarInvert(SkIntToScalar(3)); |
| 32 | const SkScalar gTwoThirds = SkScalarDiv(SkIntToScalar(2), SkIntToScalar(3)); |
| 33 | const SkScalar gOneHalf = SkFloatToScalar(0.5f); |
| 34 | const SkScalar gOneQuarter = SkFloatToScalar(0.25f); |
| 35 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 36 | void setUniformPoint3(const GrGLInterface* gl, GrGLint location, const SkPoint3& point) { |
| 37 | float x = SkScalarToFloat(point.fX); |
| 38 | float y = SkScalarToFloat(point.fY); |
| 39 | float z = SkScalarToFloat(point.fZ); |
| 40 | GR_GL_CALL(gl, Uniform3f(location, x, y, z)); |
| 41 | } |
| 42 | |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 43 | void setUniformNormal3(const GrGLInterface* gl, GrGLint location, const SkPoint3& point) { |
| 44 | setUniformPoint3(gl, location, SkPoint3(point.fX, -point.fY, point.fZ)); |
| 45 | } |
| 46 | |
| 47 | void setUniformPoint3FlipY(const GrGLInterface* gl, GrGLint location, const SkPoint3& point, int height) { |
| 48 | setUniformPoint3(gl, location, SkPoint3(point.fX, height-point.fY, point.fZ)); |
| 49 | } |
| 50 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 51 | // Shift matrix components to the left, as we advance pixels to the right. |
| 52 | inline void shiftMatrixLeft(int m[9]) { |
| 53 | m[0] = m[1]; |
| 54 | m[3] = m[4]; |
| 55 | m[6] = m[7]; |
| 56 | m[1] = m[2]; |
| 57 | m[4] = m[5]; |
| 58 | m[7] = m[8]; |
| 59 | } |
| 60 | |
| 61 | class DiffuseLightingType { |
| 62 | public: |
| 63 | DiffuseLightingType(SkScalar kd) |
| 64 | : fKD(kd) {} |
| 65 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 66 | SkScalar colorScale = SkScalarMul(fKD, normal.dot(surfaceTolight)); |
| 67 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 68 | SkPoint3 color(lightColor * colorScale); |
| 69 | return SkPackARGB32(255, |
| 70 | SkScalarFloorToInt(color.fX), |
| 71 | SkScalarFloorToInt(color.fY), |
| 72 | SkScalarFloorToInt(color.fZ)); |
| 73 | } |
| 74 | private: |
| 75 | SkScalar fKD; |
| 76 | }; |
| 77 | |
| 78 | class SpecularLightingType { |
| 79 | public: |
| 80 | SpecularLightingType(SkScalar ks, SkScalar shininess) |
| 81 | : fKS(ks), fShininess(shininess) {} |
| 82 | SkPMColor light(const SkPoint3& normal, const SkPoint3& surfaceTolight, const SkPoint3& lightColor) const { |
| 83 | SkPoint3 halfDir(surfaceTolight); |
| 84 | halfDir.fZ += SK_Scalar1; // eye position is always (0, 0, 1) |
| 85 | halfDir.normalize(); |
| 86 | SkScalar colorScale = SkScalarMul(fKS, |
| 87 | SkScalarPow(normal.dot(halfDir), fShininess)); |
| 88 | colorScale = SkScalarClampMax(colorScale, SK_Scalar1); |
| 89 | SkPoint3 color(lightColor * colorScale); |
| 90 | return SkPackARGB32(SkScalarFloorToInt(color.maxComponent()), |
| 91 | SkScalarFloorToInt(color.fX), |
| 92 | SkScalarFloorToInt(color.fY), |
| 93 | SkScalarFloorToInt(color.fZ)); |
| 94 | } |
| 95 | private: |
| 96 | SkScalar fKS; |
| 97 | SkScalar fShininess; |
| 98 | }; |
| 99 | |
| 100 | inline SkScalar sobel(int a, int b, int c, int d, int e, int f, SkScalar scale) { |
| 101 | return SkScalarMul(SkIntToScalar(-a + b - 2 * c + 2 * d -e + f), scale); |
| 102 | } |
| 103 | |
| 104 | inline SkPoint3 pointToNormal(SkScalar x, SkScalar y, SkScalar surfaceScale) { |
| 105 | SkPoint3 vector(SkScalarMul(-x, surfaceScale), |
| 106 | SkScalarMul(-y, surfaceScale), |
| 107 | SK_Scalar1); |
| 108 | vector.normalize(); |
| 109 | return vector; |
| 110 | } |
| 111 | |
| 112 | inline SkPoint3 topLeftNormal(int m[9], SkScalar surfaceScale) { |
| 113 | return pointToNormal(sobel(0, 0, m[4], m[5], m[7], m[8], gTwoThirds), |
| 114 | sobel(0, 0, m[4], m[7], m[5], m[8], gTwoThirds), |
| 115 | surfaceScale); |
| 116 | } |
| 117 | |
| 118 | inline SkPoint3 topNormal(int m[9], SkScalar surfaceScale) { |
| 119 | return pointToNormal(sobel( 0, 0, m[3], m[5], m[6], m[8], gOneThird), |
| 120 | sobel(m[3], m[6], m[4], m[7], m[5], m[8], gOneHalf), |
| 121 | surfaceScale); |
| 122 | } |
| 123 | |
| 124 | inline SkPoint3 topRightNormal(int m[9], SkScalar surfaceScale) { |
| 125 | return pointToNormal(sobel( 0, 0, m[3], m[4], m[6], m[7], gTwoThirds), |
| 126 | sobel(m[3], m[6], m[4], m[7], 0, 0, gTwoThirds), |
| 127 | surfaceScale); |
| 128 | } |
| 129 | |
| 130 | inline SkPoint3 leftNormal(int m[9], SkScalar surfaceScale) { |
| 131 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], m[7], m[8], gOneHalf), |
| 132 | sobel( 0, 0, m[1], m[7], m[2], m[8], gOneThird), |
| 133 | surfaceScale); |
| 134 | } |
| 135 | |
| 136 | |
| 137 | inline SkPoint3 interiorNormal(int m[9], SkScalar surfaceScale) { |
| 138 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], gOneQuarter), |
| 139 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], gOneQuarter), |
| 140 | surfaceScale); |
| 141 | } |
| 142 | |
| 143 | inline SkPoint3 rightNormal(int m[9], SkScalar surfaceScale) { |
| 144 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], m[6], m[7], gOneHalf), |
| 145 | sobel(m[0], m[6], m[1], m[7], 0, 0, gOneThird), |
| 146 | surfaceScale); |
| 147 | } |
| 148 | |
| 149 | inline SkPoint3 bottomLeftNormal(int m[9], SkScalar surfaceScale) { |
| 150 | return pointToNormal(sobel(m[1], m[2], m[4], m[5], 0, 0, gTwoThirds), |
| 151 | sobel( 0, 0, m[1], m[4], m[2], m[5], gTwoThirds), |
| 152 | surfaceScale); |
| 153 | } |
| 154 | |
| 155 | inline SkPoint3 bottomNormal(int m[9], SkScalar surfaceScale) { |
| 156 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], 0, 0, gOneThird), |
| 157 | sobel(m[0], m[3], m[1], m[4], m[2], m[5], gOneHalf), |
| 158 | surfaceScale); |
| 159 | } |
| 160 | |
| 161 | inline SkPoint3 bottomRightNormal(int m[9], SkScalar surfaceScale) { |
| 162 | return pointToNormal(sobel(m[0], m[1], m[3], m[4], 0, 0, gTwoThirds), |
| 163 | sobel(m[0], m[3], m[1], m[4], 0, 0, gTwoThirds), |
| 164 | surfaceScale); |
| 165 | } |
| 166 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 167 | 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] | 168 | const LightType* l = static_cast<const LightType*>(light); |
| 169 | int y = 0; |
| 170 | { |
| 171 | const SkPMColor* row1 = src.getAddr32(0, 0); |
| 172 | const SkPMColor* row2 = src.getAddr32(0, 1); |
| 173 | SkPMColor* dptr = dst->getAddr32(0, 0); |
| 174 | int m[9]; |
| 175 | int x = 0; |
| 176 | m[4] = SkGetPackedA32(*row1++); |
| 177 | m[5] = SkGetPackedA32(*row1++); |
| 178 | m[7] = SkGetPackedA32(*row2++); |
| 179 | m[8] = SkGetPackedA32(*row2++); |
| 180 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 181 | *dptr++ = lightingType.light(topLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 182 | for (x = 1; x < src.width() - 1; ++x) |
| 183 | { |
| 184 | shiftMatrixLeft(m); |
| 185 | m[5] = SkGetPackedA32(*row1++); |
| 186 | m[8] = SkGetPackedA32(*row2++); |
| 187 | surfaceToLight = l->surfaceToLight(x, 0, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 188 | *dptr++ = lightingType.light(topNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 189 | } |
| 190 | shiftMatrixLeft(m); |
| 191 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 192 | *dptr++ = lightingType.light(topRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | for (++y; y < src.height() - 1; ++y) { |
| 196 | const SkPMColor* row0 = src.getAddr32(0, y - 1); |
| 197 | const SkPMColor* row1 = src.getAddr32(0, y); |
| 198 | const SkPMColor* row2 = src.getAddr32(0, y + 1); |
| 199 | SkPMColor* dptr = dst->getAddr32(0, y); |
| 200 | int m[9]; |
| 201 | int x = 0; |
| 202 | m[1] = SkGetPackedA32(*row0++); |
| 203 | m[2] = SkGetPackedA32(*row0++); |
| 204 | m[4] = SkGetPackedA32(*row1++); |
| 205 | m[5] = SkGetPackedA32(*row1++); |
| 206 | m[7] = SkGetPackedA32(*row2++); |
| 207 | m[8] = SkGetPackedA32(*row2++); |
| 208 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 209 | *dptr++ = lightingType.light(leftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 210 | for (x = 1; x < src.width() - 1; ++x) { |
| 211 | shiftMatrixLeft(m); |
| 212 | m[2] = SkGetPackedA32(*row0++); |
| 213 | m[5] = SkGetPackedA32(*row1++); |
| 214 | m[8] = SkGetPackedA32(*row2++); |
| 215 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 216 | *dptr++ = lightingType.light(interiorNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 217 | } |
| 218 | shiftMatrixLeft(m); |
| 219 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 220 | *dptr++ = lightingType.light(rightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | { |
| 224 | const SkPMColor* row0 = src.getAddr32(0, src.height() - 2); |
| 225 | const SkPMColor* row1 = src.getAddr32(0, src.height() - 1); |
| 226 | int x = 0; |
| 227 | SkPMColor* dptr = dst->getAddr32(0, src.height() - 1); |
| 228 | int m[9]; |
| 229 | m[1] = SkGetPackedA32(*row0++); |
| 230 | m[2] = SkGetPackedA32(*row0++); |
| 231 | m[4] = SkGetPackedA32(*row1++); |
| 232 | m[5] = SkGetPackedA32(*row1++); |
| 233 | SkPoint3 surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 234 | *dptr++ = lightingType.light(bottomLeftNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 235 | for (x = 1; x < src.width() - 1; ++x) |
| 236 | { |
| 237 | shiftMatrixLeft(m); |
| 238 | m[2] = SkGetPackedA32(*row0++); |
| 239 | m[5] = SkGetPackedA32(*row1++); |
| 240 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 241 | *dptr++ = lightingType.light(bottomNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 242 | } |
| 243 | shiftMatrixLeft(m); |
| 244 | surfaceToLight = l->surfaceToLight(x, y, m[4], surfaceScale); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 245 | *dptr++ = lightingType.light(bottomRightNormal(m, surfaceScale), surfaceToLight, l->lightColor(surfaceToLight)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 246 | } |
| 247 | } |
| 248 | |
| 249 | SkPoint3 readPoint3(SkFlattenableReadBuffer& buffer) { |
| 250 | SkPoint3 point; |
| 251 | point.fX = buffer.readScalar(); |
| 252 | point.fY = buffer.readScalar(); |
| 253 | point.fZ = buffer.readScalar(); |
| 254 | return point; |
| 255 | }; |
| 256 | |
| 257 | void writePoint3(const SkPoint3& point, SkFlattenableWriteBuffer& buffer) { |
| 258 | buffer.writeScalar(point.fX); |
| 259 | buffer.writeScalar(point.fY); |
| 260 | buffer.writeScalar(point.fZ); |
| 261 | }; |
| 262 | |
| 263 | class SkDiffuseLightingImageFilter : public SkLightingImageFilter { |
| 264 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 265 | SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 266 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter) |
| 267 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 268 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 269 | SkScalar kd() const { return fKD; } |
| 270 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 271 | protected: |
| 272 | explicit SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 273 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 274 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 275 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 276 | |
| 277 | |
| 278 | private: |
| 279 | typedef SkLightingImageFilter INHERITED; |
| 280 | SkScalar fKD; |
| 281 | }; |
| 282 | |
| 283 | class SkSpecularLightingImageFilter : public SkLightingImageFilter { |
| 284 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 285 | SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 286 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter) |
| 287 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 288 | virtual bool asNewCustomStage(GrCustomStage** stage, GrTexture*) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 289 | SkScalar ks() const { return fKS; } |
| 290 | SkScalar shininess() const { return fShininess; } |
| 291 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 292 | protected: |
| 293 | explicit SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer); |
| 294 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE; |
| 295 | virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, |
| 296 | SkBitmap* result, SkIPoint* offset) SK_OVERRIDE; |
| 297 | |
| 298 | private: |
| 299 | typedef SkLightingImageFilter INHERITED; |
| 300 | SkScalar fKS; |
| 301 | SkScalar fShininess; |
| 302 | }; |
| 303 | |
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 | |
| 310 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 311 | |
| 312 | const SkLight* light() const { return fLight; } |
| 313 | SkScalar surfaceScale() const { return fSurfaceScale; } |
| 314 | private: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 315 | typedef GrSingleTextureEffect INHERITED; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 316 | const SkLight* fLight; |
| 317 | SkScalar fSurfaceScale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 318 | }; |
| 319 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 320 | class GrDiffuseLightingEffect : public GrLightingEffect { |
| 321 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 322 | GrDiffuseLightingEffect(GrTexture* texture, |
| 323 | const SkLight* light, |
| 324 | SkScalar surfaceScale, |
| 325 | SkScalar kd); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 326 | |
| 327 | static const char* Name() { return "DiffuseLighting"; } |
| 328 | |
| 329 | typedef GrGLDiffuseLightingEffect GLProgramStage; |
| 330 | |
| 331 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 332 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 333 | SkScalar kd() const { return fKD; } |
| 334 | private: |
| 335 | typedef GrLightingEffect INHERITED; |
| 336 | SkScalar fKD; |
| 337 | }; |
| 338 | |
| 339 | class GrSpecularLightingEffect : public GrLightingEffect { |
| 340 | public: |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 341 | GrSpecularLightingEffect(GrTexture* texture, |
| 342 | const SkLight* light, |
| 343 | SkScalar surfaceScale, |
| 344 | SkScalar ks, |
| 345 | SkScalar shininess); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 346 | |
| 347 | static const char* Name() { return "SpecularLighting"; } |
| 348 | |
| 349 | typedef GrGLSpecularLightingEffect GLProgramStage; |
| 350 | |
| 351 | virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; |
| 352 | virtual bool isEqual(const GrCustomStage&) const SK_OVERRIDE; |
| 353 | SkScalar ks() const { return fKS; } |
| 354 | SkScalar shininess() const { return fShininess; } |
| 355 | |
| 356 | private: |
| 357 | typedef GrLightingEffect INHERITED; |
| 358 | SkScalar fKS; |
| 359 | SkScalar fShininess; |
| 360 | }; |
| 361 | |
| 362 | /////////////////////////////////////////////////////////////////////////////// |
| 363 | |
| 364 | class GrGLLight { |
| 365 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 366 | virtual ~GrGLLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 367 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage); |
| 368 | virtual void emitVS(SkString* out) const {} |
| 369 | virtual void emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const {} |
| 370 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 371 | SkString* out, |
| 372 | const char* z) const = 0; |
| 373 | virtual void emitLightColor(const GrGLShaderBuilder*, |
| 374 | SkString* out, |
| 375 | const char *surfaceToLight) const; |
| 376 | virtual void initUniforms(const GrGLShaderBuilder*, const GrGLInterface* gl, int programID); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 377 | virtual void setData(const GrGLInterface*, const GrRenderTarget* rt, const SkLight* light) const; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 378 | |
| 379 | private: |
| 380 | typedef SkRefCnt INHERITED; |
| 381 | |
| 382 | protected: |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 383 | UniformHandle fColorUni; |
| 384 | int fColorLocation; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 385 | }; |
| 386 | |
| 387 | /////////////////////////////////////////////////////////////////////////////// |
| 388 | |
| 389 | class GrGLDistantLight : public GrGLLight { |
| 390 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 391 | virtual ~GrGLDistantLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 392 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage) SK_OVERRIDE; |
| 393 | virtual void initUniforms(const GrGLShaderBuilder*, |
| 394 | const GrGLInterface* gl, |
| 395 | int programID) SK_OVERRIDE; |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 396 | virtual void setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 397 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 398 | SkString* out, |
| 399 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 400 | |
| 401 | private: |
| 402 | typedef GrGLLight INHERITED; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 403 | UniformHandle fDirectionUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 404 | int fDirectionLocation; |
| 405 | }; |
| 406 | |
| 407 | /////////////////////////////////////////////////////////////////////////////// |
| 408 | |
| 409 | class GrGLPointLight : public GrGLLight { |
| 410 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 411 | virtual ~GrGLPointLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 412 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage) SK_OVERRIDE; |
| 413 | virtual void initUniforms(const GrGLShaderBuilder*, |
| 414 | const GrGLInterface*, |
| 415 | int programID) SK_OVERRIDE; |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 416 | virtual void setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 417 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 418 | virtual void emitSurfaceToLight(const GrGLShaderBuilder*, |
| 419 | SkString* out, |
| 420 | const char* z) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 421 | |
| 422 | private: |
| 423 | typedef GrGLLight INHERITED; |
| 424 | SkPoint3 fLocation; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 425 | UniformHandle fLocationUni; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 426 | int fLocationLocation; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 427 | }; |
| 428 | |
| 429 | /////////////////////////////////////////////////////////////////////////////// |
| 430 | |
| 431 | class GrGLSpotLight : public GrGLLight { |
| 432 | public: |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 433 | virtual ~GrGLSpotLight() {} |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 434 | virtual void setupVariables(GrGLShaderBuilder* builder, int stage) SK_OVERRIDE; |
| 435 | virtual void initUniforms(const GrGLShaderBuilder* builder, |
| 436 | const GrGLInterface* gl, |
| 437 | int programID) SK_OVERRIDE; |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 438 | virtual void setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 439 | virtual void emitVS(SkString* out) const SK_OVERRIDE; |
| 440 | virtual void emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const; |
| 441 | virtual void emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 442 | SkString* out, |
| 443 | const char* z) const SK_OVERRIDE; |
| 444 | virtual void emitLightColor(const GrGLShaderBuilder*, |
| 445 | SkString* out, |
| 446 | const char *surfaceToLight) const SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 447 | |
| 448 | private: |
| 449 | typedef GrGLLight INHERITED; |
| 450 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 451 | UniformHandle fLocationUni; |
| 452 | int fLocationLocation; |
| 453 | UniformHandle fExponentUni; |
| 454 | int fExponentLocation; |
| 455 | UniformHandle fCosOuterConeAngleUni; |
| 456 | int fCosOuterConeAngleLocation; |
| 457 | UniformHandle fCosInnerConeAngleUni; |
| 458 | int fCosInnerConeAngleLocation; |
| 459 | UniformHandle fConeScaleUni; |
| 460 | int fConeScaleLocation; |
| 461 | UniformHandle fSUni; |
| 462 | int fSLocation; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 463 | }; |
| 464 | |
| 465 | }; |
| 466 | |
| 467 | /////////////////////////////////////////////////////////////////////////////// |
| 468 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 469 | class SkLight : public SkFlattenable { |
| 470 | public: |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 471 | SK_DECLARE_INST_COUNT(SkLight) |
| 472 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 473 | enum LightType { |
| 474 | kDistant_LightType, |
| 475 | kPoint_LightType, |
| 476 | kSpot_LightType, |
| 477 | }; |
| 478 | virtual LightType type() const = 0; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 479 | const SkPoint3& color() const { return fColor; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 480 | virtual GrGLLight* createGLLight() const = 0; |
| 481 | virtual bool isEqual(const SkLight& other) const { |
| 482 | return fColor == other.fColor; |
| 483 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 484 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 485 | protected: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 486 | SkLight(SkColor color) |
| 487 | : fColor(SkIntToScalar(SkColorGetR(color)), |
| 488 | SkIntToScalar(SkColorGetG(color)), |
| 489 | SkIntToScalar(SkColorGetB(color))) {} |
| 490 | SkLight(SkFlattenableReadBuffer& buffer) |
| 491 | : INHERITED(buffer) { |
| 492 | fColor = readPoint3(buffer); |
| 493 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 494 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 495 | INHERITED::flatten(buffer); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 496 | writePoint3(fColor, buffer); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 497 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 498 | |
| 499 | private: |
| 500 | typedef SkFlattenable INHERITED; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 501 | SkPoint3 fColor; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 502 | }; |
| 503 | |
robertphillips@google.com | 0456e0b | 2012-06-27 14:03:26 +0000 | [diff] [blame] | 504 | SK_DEFINE_INST_COUNT(SkLight) |
| 505 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 506 | /////////////////////////////////////////////////////////////////////////////// |
| 507 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 508 | class SkDistantLight : public SkLight { |
| 509 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 510 | SkDistantLight(const SkPoint3& direction, SkColor color) |
| 511 | : INHERITED(color), fDirection(direction) { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 512 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 513 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 514 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 515 | return fDirection; |
| 516 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 517 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 518 | virtual LightType type() const { return kDistant_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 519 | const SkPoint3& direction() const { return fDirection; } |
| 520 | virtual GrGLLight* createGLLight() const SK_OVERRIDE; |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 521 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
| 522 | if (other.type() != kDistant_LightType) { |
| 523 | return false; |
| 524 | } |
| 525 | |
| 526 | const SkDistantLight& o = static_cast<const SkDistantLight&>(other); |
| 527 | return INHERITED::isEqual(other) && |
| 528 | fDirection == o.fDirection; |
| 529 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 530 | |
| 531 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight) |
| 532 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 533 | protected: |
| 534 | SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 535 | fDirection = readPoint3(buffer); |
| 536 | } |
| 537 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 538 | INHERITED::flatten(buffer); |
| 539 | writePoint3(fDirection, buffer); |
| 540 | } |
| 541 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 542 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 543 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 544 | SkPoint3 fDirection; |
| 545 | }; |
| 546 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 547 | /////////////////////////////////////////////////////////////////////////////// |
| 548 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 549 | class SkPointLight : public SkLight { |
| 550 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 551 | SkPointLight(const SkPoint3& location, SkColor color) |
| 552 | : INHERITED(color), fLocation(location) {} |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 553 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 554 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 555 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 556 | fLocation.fY - SkIntToScalar(y), |
| 557 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 558 | direction.normalize(); |
| 559 | return direction; |
| 560 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 561 | SkPoint3 lightColor(const SkPoint3&) const { return color(); } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 562 | virtual LightType type() const { return kPoint_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 563 | const SkPoint3& location() const { return fLocation; } |
| 564 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 565 | return SkNEW(GrGLPointLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 566 | } |
senorblanco@chromium.org | 6730cbb | 2012-07-11 16:35:00 +0000 | [diff] [blame] | 567 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 568 | if (other.type() != kPoint_LightType) { |
| 569 | return false; |
| 570 | } |
| 571 | const SkPointLight& o = static_cast<const SkPointLight&>(other); |
| 572 | return INHERITED::isEqual(other) && |
| 573 | fLocation == o.fLocation; |
| 574 | } |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 575 | |
| 576 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight) |
| 577 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 578 | protected: |
| 579 | SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 580 | fLocation = readPoint3(buffer); |
| 581 | } |
| 582 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 583 | INHERITED::flatten(buffer); |
| 584 | writePoint3(fLocation, buffer); |
| 585 | } |
| 586 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 587 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 588 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 589 | SkPoint3 fLocation; |
| 590 | }; |
| 591 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 592 | /////////////////////////////////////////////////////////////////////////////// |
| 593 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 594 | class SkSpotLight : public SkLight { |
| 595 | public: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 596 | SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle, SkColor color) |
| 597 | : INHERITED(color), |
| 598 | fLocation(location), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 599 | fTarget(target), |
| 600 | fSpecularExponent(specularExponent) |
| 601 | { |
| 602 | fS = target - location; |
| 603 | fS.normalize(); |
| 604 | fCosOuterConeAngle = SkScalarCos(SkDegreesToRadians(cutoffAngle)); |
| 605 | const SkScalar antiAliasThreshold = SkFloatToScalar(0.016f); |
| 606 | fCosInnerConeAngle = fCosOuterConeAngle + antiAliasThreshold; |
| 607 | fConeScale = SkScalarInvert(antiAliasThreshold); |
| 608 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 609 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 610 | SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const { |
| 611 | SkPoint3 direction(fLocation.fX - SkIntToScalar(x), |
| 612 | fLocation.fY - SkIntToScalar(y), |
| 613 | fLocation.fZ - SkScalarMul(SkIntToScalar(z), surfaceScale)); |
| 614 | direction.normalize(); |
| 615 | return direction; |
| 616 | }; |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 617 | SkPoint3 lightColor(const SkPoint3& surfaceToLight) const { |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 618 | SkScalar cosAngle = -surfaceToLight.dot(fS); |
| 619 | if (cosAngle < fCosOuterConeAngle) { |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 620 | return SkPoint3(0, 0, 0); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 621 | } |
| 622 | SkScalar scale = SkScalarPow(cosAngle, fSpecularExponent); |
| 623 | if (cosAngle < fCosInnerConeAngle) { |
| 624 | scale = SkScalarMul(scale, cosAngle - fCosOuterConeAngle); |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 625 | return color() * SkScalarMul(scale, fConeScale); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 626 | } |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 627 | return color() * scale; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 628 | } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 629 | virtual GrGLLight* createGLLight() const SK_OVERRIDE { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 630 | return SkNEW(GrGLSpotLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 631 | } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 632 | virtual LightType type() const { return kSpot_LightType; } |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 633 | const SkPoint3& location() const { return fLocation; } |
| 634 | const SkPoint3& target() const { return fTarget; } |
| 635 | SkScalar specularExponent() const { return fSpecularExponent; } |
| 636 | SkScalar cosInnerConeAngle() const { return fCosInnerConeAngle; } |
| 637 | SkScalar cosOuterConeAngle() const { return fCosOuterConeAngle; } |
| 638 | SkScalar coneScale() const { return fConeScale; } |
senorblanco@chromium.org | eb31184 | 2012-07-11 20:49:26 +0000 | [diff] [blame] | 639 | const SkPoint3& s() const { return fS; } |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 640 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 641 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpotLight) |
| 642 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 643 | protected: |
| 644 | SkSpotLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
| 645 | fLocation = readPoint3(buffer); |
| 646 | fTarget = readPoint3(buffer); |
| 647 | fSpecularExponent = buffer.readScalar(); |
| 648 | fCosOuterConeAngle = buffer.readScalar(); |
| 649 | fCosInnerConeAngle = buffer.readScalar(); |
| 650 | fConeScale = buffer.readScalar(); |
| 651 | fS = readPoint3(buffer); |
| 652 | } |
| 653 | virtual void flatten(SkFlattenableWriteBuffer& buffer) const { |
| 654 | INHERITED::flatten(buffer); |
| 655 | writePoint3(fLocation, buffer); |
| 656 | writePoint3(fTarget, buffer); |
| 657 | buffer.writeScalar(fSpecularExponent); |
| 658 | buffer.writeScalar(fCosOuterConeAngle); |
| 659 | buffer.writeScalar(fCosInnerConeAngle); |
| 660 | buffer.writeScalar(fConeScale); |
| 661 | writePoint3(fS, buffer); |
| 662 | } |
| 663 | |
senorblanco@chromium.org | bd9fad6 | 2012-07-11 16:25:37 +0000 | [diff] [blame] | 664 | virtual bool isEqual(const SkLight& other) const SK_OVERRIDE { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 665 | if (other.type() != kSpot_LightType) { |
| 666 | return false; |
| 667 | } |
| 668 | |
| 669 | const SkSpotLight& o = static_cast<const SkSpotLight&>(other); |
| 670 | return INHERITED::isEqual(other) && |
| 671 | fLocation == o.fLocation && |
| 672 | fTarget == o.fTarget && |
| 673 | fSpecularExponent == o.fSpecularExponent && |
| 674 | fCosOuterConeAngle == o.fCosOuterConeAngle; |
| 675 | } |
| 676 | |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 677 | private: |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 678 | typedef SkLight INHERITED; |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 679 | SkPoint3 fLocation; |
| 680 | SkPoint3 fTarget; |
| 681 | SkScalar fSpecularExponent; |
| 682 | SkScalar fCosOuterConeAngle; |
| 683 | SkScalar fCosInnerConeAngle; |
| 684 | SkScalar fConeScale; |
| 685 | SkPoint3 fS; |
| 686 | }; |
| 687 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 688 | /////////////////////////////////////////////////////////////////////////////// |
| 689 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 690 | SkLightingImageFilter::SkLightingImageFilter(SkLight* light, SkScalar surfaceScale) |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 691 | : fLight(light), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 692 | fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255))) |
| 693 | { |
| 694 | SkASSERT(fLight); |
reed@google.com | 51f3866 | 2012-06-27 14:24:29 +0000 | [diff] [blame] | 695 | // our caller knows that we take ownership of the light, so we don't |
| 696 | // need to call ref() here. |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 697 | } |
| 698 | |
| 699 | SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 700 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 701 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 702 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 703 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | SkImageFilter* SkLightingImageFilter::CreatePointLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 707 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 708 | SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 709 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 710 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | SkImageFilter* SkLightingImageFilter::CreateSpotLitDiffuse( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 714 | const SkPoint3& location, const SkPoint3& target, |
| 715 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 716 | SkColor lightColor, SkScalar surfaceScale, SkScalar kd) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 717 | return SkNEW_ARGS(SkDiffuseLightingImageFilter, |
| 718 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 719 | surfaceScale, kd)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 720 | } |
| 721 | |
| 722 | SkImageFilter* SkLightingImageFilter::CreateDistantLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 723 | const SkPoint3& direction, SkColor lightColor, SkScalar surfaceScale, |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 724 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 725 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 726 | (SkNEW_ARGS(SkDistantLight, (direction, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 727 | } |
| 728 | |
| 729 | SkImageFilter* SkLightingImageFilter::CreatePointLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 730 | const SkPoint3& location, SkColor lightColor, SkScalar surfaceScale, |
| 731 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 732 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 733 | (SkNEW_ARGS(SkPointLight, (location, lightColor)), surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 734 | } |
| 735 | |
| 736 | SkImageFilter* SkLightingImageFilter::CreateSpotLitSpecular( |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 737 | const SkPoint3& location, const SkPoint3& target, |
| 738 | SkScalar specularExponent, SkScalar cutoffAngle, |
| 739 | SkColor lightColor, SkScalar surfaceScale, |
| 740 | SkScalar ks, SkScalar shininess) { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 741 | return SkNEW_ARGS(SkSpecularLightingImageFilter, |
| 742 | (SkNEW_ARGS(SkSpotLight, (location, target, specularExponent, cutoffAngle, lightColor)), |
| 743 | surfaceScale, ks, shininess)); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 744 | } |
| 745 | |
| 746 | SkLightingImageFilter::~SkLightingImageFilter() { |
| 747 | fLight->unref(); |
| 748 | } |
| 749 | |
| 750 | SkLightingImageFilter::SkLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 751 | : INHERITED(buffer) |
| 752 | { |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 753 | fLight = (SkLight*)buffer.readFlattenable(); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 754 | fSurfaceScale = buffer.readScalar(); |
| 755 | } |
| 756 | |
| 757 | void SkLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 758 | this->INHERITED::flatten(buffer); |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 759 | buffer.writeFlattenable(fLight); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 760 | buffer.writeScalar(fSurfaceScale); |
| 761 | } |
| 762 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 763 | /////////////////////////////////////////////////////////////////////////////// |
| 764 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 765 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 766 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 767 | fKD(kd) |
| 768 | { |
| 769 | } |
| 770 | |
| 771 | SkDiffuseLightingImageFilter::SkDiffuseLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 772 | : INHERITED(buffer) |
| 773 | { |
| 774 | fKD = buffer.readScalar(); |
| 775 | } |
| 776 | |
| 777 | void SkDiffuseLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 778 | this->INHERITED::flatten(buffer); |
| 779 | buffer.writeScalar(fKD); |
| 780 | } |
| 781 | |
| 782 | bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*, |
| 783 | const SkBitmap& src, |
| 784 | const SkMatrix&, |
| 785 | SkBitmap* dst, |
| 786 | SkIPoint*) { |
| 787 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 788 | return false; |
| 789 | } |
| 790 | SkAutoLockPixels alp(src); |
| 791 | if (!src.getPixels()) { |
| 792 | return false; |
| 793 | } |
| 794 | if (src.width() < 2 || src.height() < 2) { |
| 795 | return false; |
| 796 | } |
| 797 | dst->setConfig(src.config(), src.width(), src.height()); |
| 798 | dst->allocPixels(); |
| 799 | |
| 800 | DiffuseLightingType lightingType(fKD); |
| 801 | switch (light()->type()) { |
| 802 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 803 | lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 804 | break; |
| 805 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 806 | lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 807 | break; |
| 808 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 809 | lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 810 | break; |
| 811 | } |
| 812 | return true; |
| 813 | } |
| 814 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 815 | bool SkDiffuseLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 816 | GrTexture* texture) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 817 | if (stage) { |
| 818 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 819 | *stage = SkNEW_ARGS(GrDiffuseLightingEffect, (texture, light(), scale, kd())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 820 | } |
| 821 | return true; |
| 822 | } |
| 823 | |
| 824 | /////////////////////////////////////////////////////////////////////////////// |
| 825 | |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 826 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 827 | : SkLightingImageFilter(light, surfaceScale), |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 828 | fKS(ks), |
| 829 | fShininess(shininess) |
| 830 | { |
| 831 | } |
| 832 | |
| 833 | SkSpecularLightingImageFilter::SkSpecularLightingImageFilter(SkFlattenableReadBuffer& buffer) |
| 834 | : INHERITED(buffer) |
| 835 | { |
| 836 | fKS = buffer.readScalar(); |
| 837 | fShininess = buffer.readScalar(); |
| 838 | } |
| 839 | |
| 840 | void SkSpecularLightingImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { |
| 841 | this->INHERITED::flatten(buffer); |
| 842 | buffer.writeScalar(fKS); |
| 843 | buffer.writeScalar(fShininess); |
| 844 | } |
| 845 | |
| 846 | bool SkSpecularLightingImageFilter::onFilterImage(Proxy*, |
| 847 | const SkBitmap& src, |
| 848 | const SkMatrix&, |
| 849 | SkBitmap* dst, |
| 850 | SkIPoint*) { |
| 851 | if (src.config() != SkBitmap::kARGB_8888_Config) { |
| 852 | return false; |
| 853 | } |
| 854 | SkAutoLockPixels alp(src); |
| 855 | if (!src.getPixels()) { |
| 856 | return false; |
| 857 | } |
| 858 | if (src.width() < 2 || src.height() < 2) { |
| 859 | return false; |
| 860 | } |
| 861 | dst->setConfig(src.config(), src.width(), src.height()); |
| 862 | dst->allocPixels(); |
| 863 | |
| 864 | SpecularLightingType lightingType(fKS, fShininess); |
| 865 | switch (light()->type()) { |
| 866 | case SkLight::kDistant_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 867 | lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 868 | break; |
| 869 | case SkLight::kPoint_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 870 | lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 871 | break; |
| 872 | case SkLight::kSpot_LightType: |
senorblanco@chromium.org | bdb1ec4 | 2012-07-09 14:29:51 +0000 | [diff] [blame] | 873 | lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale()); |
senorblanco@chromium.org | f49b429 | 2012-06-22 21:01:23 +0000 | [diff] [blame] | 874 | break; |
| 875 | } |
| 876 | return true; |
| 877 | } |
| 878 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 879 | bool SkSpecularLightingImageFilter::asNewCustomStage(GrCustomStage** stage, |
| 880 | GrTexture* texture) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 881 | if (stage) { |
| 882 | SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255)); |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 883 | *stage = SkNEW_ARGS(GrSpecularLightingEffect, (texture, light(), scale, ks(), shininess())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 884 | } |
| 885 | return true; |
| 886 | } |
| 887 | |
| 888 | /////////////////////////////////////////////////////////////////////////////// |
| 889 | |
| 890 | class GrGLLightingEffect : public GrGLProgramStage { |
| 891 | public: |
| 892 | GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 893 | const GrCustomStage& stage); |
| 894 | virtual ~GrGLLightingEffect(); |
| 895 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 896 | virtual void setupVariables(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 897 | int stage) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 898 | virtual void emitVS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 899 | const char* vertexCoords) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 900 | virtual void emitFS(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 901 | const char* outputColor, |
| 902 | const char* inputColor, |
| 903 | const char* samplerName) SK_OVERRIDE; |
| 904 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 905 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) = 0; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 906 | |
| 907 | static inline StageKey GenKey(const GrCustomStage& s); |
| 908 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 909 | virtual void initUniforms(const GrGLShaderBuilder* builder, |
| 910 | const GrGLInterface*, |
| 911 | int programID) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 912 | virtual void setData(const GrGLInterface*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 913 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 914 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 915 | int stageNum) SK_OVERRIDE; |
| 916 | |
| 917 | private: |
| 918 | typedef GrGLProgramStage INHERITED; |
| 919 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 920 | UniformHandle fImageIncrementUni; |
| 921 | GrGLint fImageIncrementLocation; |
| 922 | UniformHandle fSurfaceScaleUni; |
| 923 | GrGLint fSurfaceScaleLocation; |
| 924 | GrGLLight* fLight; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 925 | }; |
| 926 | |
| 927 | /////////////////////////////////////////////////////////////////////////////// |
| 928 | |
| 929 | class GrGLDiffuseLightingEffect : public GrGLLightingEffect { |
| 930 | public: |
| 931 | GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 932 | const GrCustomStage& stage); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 933 | virtual void setupVariables(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 934 | int stage) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 935 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) SK_OVERRIDE; |
| 936 | virtual void initUniforms(const GrGLShaderBuilder*, |
| 937 | const GrGLInterface*, |
| 938 | int programID) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 939 | virtual void setData(const GrGLInterface*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 940 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 941 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 942 | int stageNum) SK_OVERRIDE; |
| 943 | |
| 944 | private: |
| 945 | typedef GrGLLightingEffect INHERITED; |
| 946 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 947 | UniformHandle fKDUni; |
| 948 | GrGLint fKDLocation; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 949 | }; |
| 950 | |
| 951 | /////////////////////////////////////////////////////////////////////////////// |
| 952 | |
| 953 | class GrGLSpecularLightingEffect : public GrGLLightingEffect { |
| 954 | public: |
| 955 | GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 956 | const GrCustomStage& stage); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 957 | virtual void setupVariables(GrGLShaderBuilder* builder, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 958 | int stage) SK_OVERRIDE; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 959 | virtual void emitLightFunc(const GrGLShaderBuilder*, SkString* funcs) SK_OVERRIDE; |
| 960 | virtual void initUniforms(const GrGLShaderBuilder*, |
| 961 | const GrGLInterface*, |
| 962 | int programID) SK_OVERRIDE; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 963 | virtual void setData(const GrGLInterface*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 964 | const GrCustomStage&, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 965 | const GrRenderTarget*, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 966 | int stageNum) SK_OVERRIDE; |
| 967 | |
| 968 | private: |
| 969 | typedef GrGLLightingEffect INHERITED; |
| 970 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 971 | UniformHandle fKSUni; |
| 972 | GrGLint fKSLocation; |
| 973 | UniformHandle fShininessUni; |
| 974 | GrGLint fShininessLocation; |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 975 | }; |
| 976 | |
| 977 | /////////////////////////////////////////////////////////////////////////////// |
| 978 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 979 | GrLightingEffect::GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale) |
| 980 | : GrSingleTextureEffect(texture) |
| 981 | , fLight(light) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 982 | , fSurfaceScale(surfaceScale) { |
| 983 | fLight->ref(); |
| 984 | } |
| 985 | |
| 986 | GrLightingEffect::~GrLightingEffect() { |
| 987 | fLight->unref(); |
| 988 | } |
| 989 | |
| 990 | bool GrLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 991 | const GrLightingEffect& s = |
| 992 | static_cast<const GrLightingEffect&>(sBase); |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 993 | return INHERITED::isEqual(sBase) && |
| 994 | fLight->isEqual(*s.fLight) && |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 995 | fSurfaceScale == s.fSurfaceScale; |
| 996 | } |
| 997 | |
| 998 | /////////////////////////////////////////////////////////////////////////////// |
| 999 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1000 | GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar kd) |
| 1001 | : INHERITED(texture, light, surfaceScale), fKD(kd) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1002 | } |
| 1003 | |
| 1004 | const GrProgramStageFactory& GrDiffuseLightingEffect::getFactory() const { |
| 1005 | return GrTProgramStageFactory<GrDiffuseLightingEffect>::getInstance(); |
| 1006 | } |
| 1007 | |
| 1008 | bool GrDiffuseLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1009 | const GrDiffuseLightingEffect& s = |
| 1010 | static_cast<const GrDiffuseLightingEffect&>(sBase); |
| 1011 | return INHERITED::isEqual(sBase) && |
| 1012 | this->kd() == s.kd(); |
| 1013 | } |
| 1014 | |
| 1015 | /////////////////////////////////////////////////////////////////////////////// |
| 1016 | |
| 1017 | GrGLLightingEffect::GrGLLightingEffect(const GrProgramStageFactory& factory, |
| 1018 | const GrCustomStage& stage) |
| 1019 | : GrGLProgramStage(factory) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1020 | , fImageIncrementUni(kInvalidUniformHandle) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1021 | , fImageIncrementLocation(0) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1022 | , fSurfaceScaleUni(kInvalidUniformHandle) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1023 | , fSurfaceScaleLocation(0) { |
| 1024 | const GrLightingEffect& m = static_cast<const GrLightingEffect&>(stage); |
| 1025 | fLight = m.light()->createGLLight(); |
| 1026 | } |
| 1027 | |
| 1028 | GrGLLightingEffect::~GrGLLightingEffect() { |
| 1029 | delete fLight; |
| 1030 | } |
| 1031 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1032 | void GrGLLightingEffect::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1033 | fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1034 | kVec2f_GrSLType, |
| 1035 | "uImageIncrement", stage); |
| 1036 | fSurfaceScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1037 | kFloat_GrSLType, |
| 1038 | "uSurfaceScale", stage); |
| 1039 | fLight->setupVariables(builder, stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1040 | } |
| 1041 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1042 | void GrGLLightingEffect::emitVS(GrGLShaderBuilder* builder, |
| 1043 | const char* vertexCoords) { |
| 1044 | fLight->emitVS(&builder->fVSCode); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1045 | } |
| 1046 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1047 | void GrGLLightingEffect::initUniforms(const GrGLShaderBuilder* builder, |
| 1048 | const GrGLInterface* gl, |
| 1049 | int programID) { |
| 1050 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1051 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1052 | |
| 1053 | GR_GL_CALL_RET(gl, fSurfaceScaleLocation, GetUniformLocation(programID, surfScale)); |
| 1054 | GR_GL_CALL_RET(gl, fImageIncrementLocation, GetUniformLocation(programID, imgInc)); |
| 1055 | fLight->initUniforms(builder, gl, programID); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1056 | } |
| 1057 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1058 | void GrGLLightingEffect::emitFS(GrGLShaderBuilder* builder, |
| 1059 | const char* outputColor, |
| 1060 | const char* inputColor, |
| 1061 | const char* samplerName) { |
| 1062 | SkString* code = &builder->fFSCode; |
| 1063 | SkString* funcs = &builder->fFSFunctions; |
| 1064 | fLight->emitFuncs(builder, funcs); |
| 1065 | this->emitLightFunc(builder, funcs); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1066 | funcs->appendf("float sobel(float a, float b, float c, float d, float e, float f, float scale) {\n"); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1067 | funcs->appendf("\treturn (-a + b - 2.0 * c + 2.0 * d -e + f) * scale;\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1068 | funcs->appendf("}\n"); |
| 1069 | funcs->appendf("vec3 pointToNormal(float x, float y, float scale) {\n"); |
| 1070 | funcs->appendf("\treturn normalize(vec3(-x * scale, -y * scale, 1));\n"); |
| 1071 | funcs->appendf("}\n"); |
| 1072 | funcs->append("\n\ |
| 1073 | vec3 interiorNormal(float m[9], float surfaceScale) {\n\ |
| 1074 | return pointToNormal(sobel(m[0], m[2], m[3], m[5], m[6], m[8], 0.25),\n\ |
| 1075 | sobel(m[0], m[6], m[1], m[7], m[2], m[8], 0.25),\n\ |
| 1076 | surfaceScale);\n}\n"); |
| 1077 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1078 | code->appendf("\t\tvec2 coord = %s;\n", builder->fSampleCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1079 | code->appendf("\t\tfloat m[9];\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1080 | |
| 1081 | const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
| 1082 | const char* surfScale = builder->getUniformCStr(fSurfaceScaleUni); |
| 1083 | |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1084 | int index = 0; |
| 1085 | for (int dy = -1; dy <= 1; dy++) { |
| 1086 | for (int dx = -1; dx <= 1; dx++) { |
| 1087 | SkString texCoords; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1088 | texCoords.appendf("coord + vec2(%d, %d) * %s", dx, dy, imgInc); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1089 | code->appendf("\t\tm[%d] = ", index++); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1090 | builder->emitTextureLookup(samplerName, texCoords.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1091 | code->appendf(".a;\n"); |
| 1092 | } |
| 1093 | } |
| 1094 | code->appendf("\t\tvec3 surfaceToLight = "); |
| 1095 | SkString arg; |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1096 | arg.appendf("%s * m[4]", surfScale); |
| 1097 | fLight->emitSurfaceToLight(builder, code, arg.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1098 | code->appendf(";\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1099 | code->appendf("\t\t%s = light(interiorNormal(m, %s), surfaceToLight, ", outputColor, surfScale); |
| 1100 | fLight->emitLightColor(builder, code, "surfaceToLight"); |
| 1101 | code->appendf(")%s;\n", builder->fModulate.c_str()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1102 | } |
| 1103 | |
| 1104 | GrGLProgramStage::StageKey GrGLLightingEffect::GenKey( |
| 1105 | const GrCustomStage& s) { |
| 1106 | return static_cast<const GrLightingEffect&>(s).light()->type(); |
| 1107 | } |
| 1108 | |
| 1109 | void GrGLLightingEffect::setData(const GrGLInterface* gl, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1110 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1111 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1112 | int stageNum) { |
| 1113 | const GrLightingEffect& effect = |
| 1114 | static_cast<const GrLightingEffect&>(data); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1115 | GrGLTexture* texture = static_cast<GrGLTexture*>(data.texture(0)); |
| 1116 | float ySign = texture->orientation() == GrGLTexture::kTopDown_Orientation ? -1.0f : 1.0f; |
| 1117 | GR_GL_CALL(gl, Uniform2f(fImageIncrementLocation, 1.0f / texture->width(), ySign / texture->height())); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1118 | GR_GL_CALL(gl, Uniform1f(fSurfaceScaleLocation, effect.surfaceScale())); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1119 | fLight->setData(gl, rt, effect.light()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1120 | } |
| 1121 | |
| 1122 | /////////////////////////////////////////////////////////////////////////////// |
| 1123 | |
| 1124 | /////////////////////////////////////////////////////////////////////////////// |
| 1125 | |
| 1126 | GrGLDiffuseLightingEffect::GrGLDiffuseLightingEffect(const GrProgramStageFactory& factory, |
| 1127 | const GrCustomStage& stage) |
| 1128 | : INHERITED(factory, stage) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1129 | , fKDUni(kInvalidUniformHandle) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1130 | , fKDLocation(0) { |
| 1131 | } |
| 1132 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1133 | void GrGLDiffuseLightingEffect::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1134 | INHERITED::setupVariables(builder, stage); |
| 1135 | fKDUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, "uKD", |
| 1136 | stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1139 | void GrGLDiffuseLightingEffect::initUniforms(const GrGLShaderBuilder* builder, |
| 1140 | const GrGLInterface* gl, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1141 | int programID) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1142 | INHERITED::initUniforms(builder, gl, programID); |
| 1143 | const char* kd = builder->getUniformCStr(fKDUni); |
| 1144 | GR_GL_CALL_RET(gl, fKDLocation, GetUniformLocation(programID, kd)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1145 | } |
| 1146 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1147 | void GrGLDiffuseLightingEffect::emitLightFunc(const GrGLShaderBuilder* builder, SkString* funcs) { |
| 1148 | const char* kd = builder->getUniformCStr(fKDUni); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1149 | funcs->appendf("vec4 light(vec3 normal, vec3 surfaceToLight, vec3 lightColor) {\n"); |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1150 | funcs->appendf("\tfloat colorScale = %s * dot(normal, surfaceToLight);\n", kd); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1151 | funcs->appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1152 | funcs->appendf("}\n"); |
| 1153 | } |
| 1154 | |
| 1155 | void GrGLDiffuseLightingEffect::setData(const GrGLInterface* gl, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1156 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1157 | const GrRenderTarget* rt, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1158 | int stageNum) { |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1159 | INHERITED::setData(gl, data, rt, stageNum); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1160 | const GrDiffuseLightingEffect& effect = |
| 1161 | static_cast<const GrDiffuseLightingEffect&>(data); |
| 1162 | GR_GL_CALL(gl, Uniform1f(fKDLocation, effect.kd())); |
| 1163 | } |
| 1164 | |
| 1165 | /////////////////////////////////////////////////////////////////////////////// |
| 1166 | |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1167 | GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, SkScalar ks, SkScalar shininess) |
| 1168 | : INHERITED(texture, light, surfaceScale), |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1169 | fKS(ks), |
| 1170 | fShininess(shininess) { |
| 1171 | } |
| 1172 | |
| 1173 | const GrProgramStageFactory& GrSpecularLightingEffect::getFactory() const { |
| 1174 | return GrTProgramStageFactory<GrSpecularLightingEffect>::getInstance(); |
| 1175 | } |
| 1176 | |
| 1177 | bool GrSpecularLightingEffect::isEqual(const GrCustomStage& sBase) const { |
| 1178 | const GrSpecularLightingEffect& s = |
| 1179 | static_cast<const GrSpecularLightingEffect&>(sBase); |
| 1180 | return INHERITED::isEqual(sBase) && |
| 1181 | this->ks() == s.ks() && |
| 1182 | this->shininess() == s.shininess(); |
| 1183 | } |
| 1184 | |
| 1185 | /////////////////////////////////////////////////////////////////////////////// |
| 1186 | |
| 1187 | GrGLSpecularLightingEffect::GrGLSpecularLightingEffect(const GrProgramStageFactory& factory, |
| 1188 | const GrCustomStage& stage) |
| 1189 | : GrGLLightingEffect(factory, stage) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1190 | , fKSUni(kInvalidUniformHandle) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1191 | , fKSLocation(0) |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1192 | , fShininessUni(kInvalidUniformHandle) |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1193 | , fShininessLocation(0) { |
| 1194 | } |
| 1195 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1196 | void GrGLSpecularLightingEffect::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1197 | INHERITED::setupVariables(builder, stage); |
| 1198 | fKSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1199 | kFloat_GrSLType, "uKS", stage); |
| 1200 | fShininessUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1201 | kFloat_GrSLType, "uShininess", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1202 | } |
| 1203 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1204 | void GrGLSpecularLightingEffect::initUniforms(const GrGLShaderBuilder* builder, |
| 1205 | const GrGLInterface* gl, |
| 1206 | int programID) { |
| 1207 | INHERITED::initUniforms(builder, gl, programID); |
| 1208 | const char* ks = builder->getUniformCStr(fKSUni); |
| 1209 | const char* shininess = builder->getUniformCStr(fShininessUni); |
| 1210 | GR_GL_CALL_RET(gl, fKSLocation, GetUniformLocation(programID, ks)); |
| 1211 | GR_GL_CALL_RET(gl, fShininessLocation, GetUniformLocation(programID, shininess)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1212 | } |
| 1213 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1214 | void GrGLSpecularLightingEffect::emitLightFunc(const GrGLShaderBuilder* builder, SkString* funcs) { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1215 | funcs->appendf("vec4 light(vec3 normal, vec3 surfaceToLight, vec3 lightColor) {\n"); |
| 1216 | funcs->appendf("\tvec3 halfDir = vec3(normalize(surfaceToLight + vec3(0, 0, 1)));\n"); |
| 1217 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1218 | const char* ks = builder->getUniformCStr(fKSUni); |
| 1219 | const char* shininess = builder->getUniformCStr(fShininessUni); |
| 1220 | funcs->appendf("\tfloat colorScale = %s * pow(dot(normal, halfDir), %s);\n", ks, shininess); |
senorblanco@chromium.org | 0ec1eab | 2012-07-11 16:44:49 +0000 | [diff] [blame] | 1221 | funcs->appendf("\treturn vec4(lightColor * clamp(colorScale, 0.0, 1.0), 1.0);\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1222 | funcs->appendf("}\n"); |
| 1223 | } |
| 1224 | |
| 1225 | void GrGLSpecularLightingEffect::setData(const GrGLInterface* gl, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1226 | const GrCustomStage& data, |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1227 | const GrRenderTarget* rt, |
tomhudson@google.com | d0c1a06 | 2012-07-12 17:23:52 +0000 | [diff] [blame] | 1228 | int stageNum) { |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1229 | INHERITED::setData(gl, data, rt, stageNum); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1230 | const GrSpecularLightingEffect& effect = |
| 1231 | static_cast<const GrSpecularLightingEffect&>(data); |
| 1232 | GR_GL_CALL(gl, Uniform1f(fKSLocation, effect.ks())); |
| 1233 | GR_GL_CALL(gl, Uniform1f(fShininessLocation, effect.shininess())); |
| 1234 | } |
| 1235 | |
| 1236 | /////////////////////////////////////////////////////////////////////////////// |
| 1237 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1238 | void GrGLLight::emitLightColor(const GrGLShaderBuilder* builder, |
| 1239 | SkString* out, |
| 1240 | const char *surfaceToLight) const { |
| 1241 | const char* color = builder->getUniformCStr(fColorUni); |
| 1242 | out->append(color); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1243 | } |
| 1244 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1245 | void GrGLLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1246 | fColorUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1247 | kVec3f_GrSLType, "uLightColor", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1250 | void GrGLLight::initUniforms(const GrGLShaderBuilder* builder, |
| 1251 | const GrGLInterface* gl, |
| 1252 | int programID) { |
| 1253 | const char* color = builder->getUniformCStr(fColorUni); |
| 1254 | GR_GL_CALL_RET(gl, fColorLocation, GetUniformLocation(programID, color)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1255 | } |
| 1256 | |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1257 | void GrGLLight::setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1258 | setUniformPoint3(gl, fColorLocation, light->color() * SkScalarInvert(SkIntToScalar(255))); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1259 | } |
| 1260 | |
| 1261 | GrGLLight* SkDistantLight::createGLLight() const { |
tomhudson@google.com | 300f562 | 2012-07-20 14:15:22 +0000 | [diff] [blame^] | 1262 | return SkNEW(GrGLDistantLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | /////////////////////////////////////////////////////////////////////////////// |
| 1266 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1267 | void GrGLDistantLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1268 | INHERITED::setupVariables(builder, stage); |
| 1269 | fDirectionUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1270 | "uLightDirection", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1271 | } |
| 1272 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1273 | void GrGLDistantLight::initUniforms(const GrGLShaderBuilder* builder, |
| 1274 | const GrGLInterface* gl, |
| 1275 | int programID) { |
| 1276 | INHERITED::initUniforms(builder, gl, programID); |
| 1277 | const char* dir = builder->getUniformCStr(fDirectionUni); |
| 1278 | GR_GL_CALL_RET(gl, fDirectionLocation, GetUniformLocation(programID, dir)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1279 | } |
| 1280 | |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1281 | void GrGLDistantLight::setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const { |
| 1282 | INHERITED::setData(gl, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1283 | SkASSERT(light->type() == SkLight::kDistant_LightType); |
| 1284 | const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1285 | setUniformNormal3(gl, fDirectionLocation, distantLight->direction()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1288 | void GrGLDistantLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1289 | SkString* out, |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1290 | const char* z) const { |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1291 | const char* dir = builder->getUniformCStr(fDirectionUni); |
| 1292 | out->append(dir); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1293 | } |
| 1294 | |
| 1295 | /////////////////////////////////////////////////////////////////////////////// |
| 1296 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1297 | void GrGLPointLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1298 | INHERITED::setupVariables(builder, stage); |
| 1299 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, |
| 1300 | "uLightLocation", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1301 | } |
| 1302 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1303 | void GrGLPointLight::initUniforms(const GrGLShaderBuilder* builder, |
| 1304 | const GrGLInterface* gl, |
| 1305 | int programID) { |
| 1306 | INHERITED::initUniforms(builder, gl, programID); |
| 1307 | const char* loc = builder->getUniformCStr(fLocationUni); |
| 1308 | GR_GL_CALL_RET(gl, fLocationLocation, GetUniformLocation(programID, loc)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1309 | } |
| 1310 | |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1311 | void GrGLPointLight::setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const { |
| 1312 | INHERITED::setData(gl, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1313 | SkASSERT(light->type() == SkLight::kPoint_LightType); |
| 1314 | const SkPointLight* pointLight = static_cast<const SkPointLight*>(light); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1315 | setUniformPoint3FlipY(gl, fLocationLocation, pointLight->location(), rt->height()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1316 | } |
| 1317 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1318 | void GrGLPointLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1319 | } |
| 1320 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1321 | void GrGLPointLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, SkString* out, const char* z) const { |
| 1322 | const char* loc = builder->getUniformCStr(fLocationUni); |
| 1323 | out->appendf( |
| 1324 | "normalize(%s - vec3(gl_FragCoord.xy, %s))", loc, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1325 | } |
| 1326 | |
| 1327 | /////////////////////////////////////////////////////////////////////////////// |
| 1328 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1329 | void GrGLSpotLight::setupVariables(GrGLShaderBuilder* builder, int stage) { |
| 1330 | INHERITED::setupVariables(builder, stage); |
| 1331 | fLocationUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1332 | kVec3f_GrSLType, "uLightLocation", stage); |
| 1333 | fExponentUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1334 | kFloat_GrSLType, "uExponent", stage); |
| 1335 | fCosInnerConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1336 | kFloat_GrSLType, "uCosInnerConeAngle", stage); |
| 1337 | fCosOuterConeAngleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1338 | kFloat_GrSLType, "uCosOuterConeAngle", stage); |
| 1339 | fConeScaleUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1340 | kFloat_GrSLType, "uConeScale", stage); |
| 1341 | fSUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, |
| 1342 | kVec3f_GrSLType, "uS", stage); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1343 | } |
| 1344 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1345 | void GrGLSpotLight::initUniforms(const GrGLShaderBuilder* builder, const GrGLInterface* gl, int programID) { |
| 1346 | INHERITED::initUniforms(builder, gl, programID); |
| 1347 | const char* location = builder->getUniformCStr(fLocationUni); |
| 1348 | const char* exponent = builder->getUniformCStr(fExponentUni); |
| 1349 | const char* cosInner = builder->getUniformCStr(fCosInnerConeAngleUni); |
| 1350 | const char* cosOuter = builder->getUniformCStr(fCosOuterConeAngleUni); |
| 1351 | const char* coneScale = builder->getUniformCStr(fConeScaleUni); |
| 1352 | const char* s = builder->getUniformCStr(fSUni); |
| 1353 | GR_GL_CALL_RET(gl, fLocationLocation, GetUniformLocation(programID, location)); |
| 1354 | GR_GL_CALL_RET(gl, fExponentLocation, GetUniformLocation(programID, exponent)); |
| 1355 | GR_GL_CALL_RET(gl, fCosInnerConeAngleLocation, GetUniformLocation(programID, cosInner)); |
| 1356 | GR_GL_CALL_RET(gl, fCosOuterConeAngleLocation, GetUniformLocation(programID, cosOuter)); |
| 1357 | GR_GL_CALL_RET(gl, fConeScaleLocation, GetUniformLocation(programID, coneScale)); |
| 1358 | GR_GL_CALL_RET(gl, fSLocation, GetUniformLocation(programID, s)); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1359 | } |
| 1360 | |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1361 | void GrGLSpotLight::setData(const GrGLInterface* gl, const GrRenderTarget* rt, const SkLight* light) const { |
| 1362 | INHERITED::setData(gl, rt, light); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1363 | SkASSERT(light->type() == SkLight::kSpot_LightType); |
| 1364 | const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1365 | setUniformPoint3FlipY(gl, fLocationLocation, spotLight->location(), rt->height()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1366 | GR_GL_CALL(gl, Uniform1f(fExponentLocation, spotLight->specularExponent())); |
| 1367 | GR_GL_CALL(gl, Uniform1f(fCosInnerConeAngleLocation, spotLight->cosInnerConeAngle())); |
| 1368 | GR_GL_CALL(gl, Uniform1f(fCosOuterConeAngleLocation, spotLight->cosOuterConeAngle())); |
| 1369 | GR_GL_CALL(gl, Uniform1f(fConeScaleLocation, spotLight->coneScale())); |
senorblanco@chromium.org | f4770d7 | 2012-07-13 18:25:06 +0000 | [diff] [blame] | 1370 | setUniformNormal3(gl, fSLocation, spotLight->s()); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1371 | } |
| 1372 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1373 | void GrGLSpotLight::emitVS(SkString* out) const { |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1374 | } |
| 1375 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1376 | void GrGLSpotLight::emitFuncs(const GrGLShaderBuilder* builder, SkString* out) const { |
| 1377 | const char* exponent = builder->getUniformCStr(fExponentUni); |
| 1378 | const char* cosInner = builder->getUniformCStr(fCosInnerConeAngleUni); |
| 1379 | const char* cosOuter = builder->getUniformCStr(fCosOuterConeAngleUni); |
| 1380 | const char* coneScale = builder->getUniformCStr(fConeScaleUni); |
| 1381 | const char* s = builder->getUniformCStr(fSUni); |
| 1382 | const char* color = builder->getUniformCStr(fColorUni); |
| 1383 | |
| 1384 | out->appendf("vec3 lightColor(vec3 surfaceToLight) {\n"); |
| 1385 | out->appendf("\tfloat cosAngle = -dot(surfaceToLight, %s);\n", s); |
| 1386 | out->appendf("\tif (cosAngle < %s) {\n", cosOuter); |
| 1387 | out->appendf("\t\treturn vec3(0);\n"); |
| 1388 | out->appendf("\t}\n"); |
| 1389 | out->appendf("\tfloat scale = pow(cosAngle, %s);\n", exponent); |
| 1390 | out->appendf("\tif (cosAngle < %s) {\n", cosInner); |
| 1391 | out->appendf("\t\treturn %s * scale * (cosAngle - %s) * %s;\n", color, cosOuter, coneScale); |
| 1392 | out->appendf("\t}\n"); |
| 1393 | out->appendf("\treturn %s;\n", color); |
| 1394 | out->appendf("}\n"); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1395 | } |
| 1396 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1397 | void GrGLSpotLight::emitSurfaceToLight(const GrGLShaderBuilder* builder, |
| 1398 | SkString* out, |
| 1399 | const char* z) const { |
| 1400 | const char* location= builder->getUniformCStr(fLocationUni); |
| 1401 | out->appendf("normalize(%s - vec3(gl_FragCoord.xy, %s))", location, z); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1402 | } |
| 1403 | |
bsalomon@google.com | 032b221 | 2012-07-16 13:36:18 +0000 | [diff] [blame] | 1404 | void GrGLSpotLight::emitLightColor(const GrGLShaderBuilder* builder, |
| 1405 | SkString* out, const char *surfaceToLight) const { |
| 1406 | out->appendf("lightColor(%s)", surfaceToLight); |
senorblanco@chromium.org | 894790d | 2012-07-11 16:01:22 +0000 | [diff] [blame] | 1407 | } |
| 1408 | |
djsollen@google.com | 0833777 | 2012-06-26 14:33:13 +0000 | [diff] [blame] | 1409 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter) |
| 1410 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter) |
| 1411 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter) |
| 1412 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDistantLight) |
| 1413 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkPointLight) |
| 1414 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpotLight) |
| 1415 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |