libs/hwui/jni/Shader.cpp - platform/frameworks/base - Git at Google

 #include "GraphicsJNI.h"
 #include "SkColorFilter.h"
 #include "SkGradientShader.h"
 #include "SkImagePriv.h"
 #include "SkShader.h"
 #include "SkBlendMode.h"
 #include "include/effects/SkRuntimeEffect.h"

 #include <vector>

 using namespace android::uirenderer;

 /**
  * By default Skia gradients will interpolate their colors in unpremul space
  * and then premultiply each of the results. We must set this flag to preserve
  * backwards compatiblity by premultiplying the colors of the gradient first,
  * and then interpolating between them.
  */
 static const uint32_t sGradientShaderFlags = SkGradientShader::kInterpolateColorsInPremul_Flag;

 #define ThrowIAE_IfNull(env, ptr)   \
     if (nullptr == ptr) {           \
         doThrowIAE(env);            \
         return 0;                   \
     }

 static void Color_RGBToHSV(JNIEnv* env, jobject, jint red, jint green, jint blue, jfloatArray hsvArray)
 {
     SkScalar hsv[3];
     SkRGBToHSV(red, green, blue, hsv);

     AutoJavaFloatArray  autoHSV(env, hsvArray, 3);
     float* values = autoHSV.ptr();
     for (int i = 0; i < 3; i++) {
         values[i] = SkScalarToFloat(hsv[i]);
     }
 }

 static jint Color_HSVToColor(JNIEnv* env, jobject, jint alpha, jfloatArray hsvArray)
 {
     AutoJavaFloatArray  autoHSV(env, hsvArray, 3);
 #ifdef SK_SCALAR_IS_FLOAT
     SkScalar*   hsv = autoHSV.ptr();
 #else
     #error Need to convert float array to SkScalar array before calling the following function.
 #endif

     return static_cast<jint>(SkHSVToColor(alpha, hsv));
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static void Shader_safeUnref(SkShader* shader) {
     SkSafeUnref(shader);
 }

 static jlong Shader_getNativeFinalizer(JNIEnv*, jobject) {
     return static_cast<jlong>(reinterpret_cast<uintptr_t>(&Shader_safeUnref));
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static jlong BitmapShader_constructor(JNIEnv* env, jobject o, jlong matrixPtr, jlong bitmapHandle,
         jint tileModeX, jint tileModeY) {
     const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
     sk_sp<SkImage> image;
     if (bitmapHandle) {
         // Only pass a valid SkBitmap object to the constructor if the Bitmap exists. Otherwise,
         // we'll pass an empty SkBitmap to avoid crashing/excepting for compatibility.
         image = android::bitmap::toBitmap(bitmapHandle).makeImage();
     }

     if (!image.get()) {
         SkBitmap bitmap;
         image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode);
     }
     sk_sp<SkShader> shader = image->makeShader(
             (SkTileMode)tileModeX, (SkTileMode)tileModeY);
     ThrowIAE_IfNull(env, shader.get());

     if (matrix) {
         shader = shader->makeWithLocalMatrix(*matrix);
     }

     return reinterpret_cast<jlong>(shader.release());
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static std::vector<SkColor4f> convertColorLongs(JNIEnv* env, jlongArray colorArray) {
     const size_t count = env->GetArrayLength(colorArray);
     const jlong* colorValues = env->GetLongArrayElements(colorArray, nullptr);

     std::vector<SkColor4f> colors(count);
     for (size_t i = 0; i < count; ++i) {
         colors[i] = GraphicsJNI::convertColorLong(colorValues[i]);
     }

     env->ReleaseLongArrayElements(colorArray, const_cast<jlong*>(colorValues), JNI_ABORT);
     return colors;
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static jlong LinearGradient_create(JNIEnv* env, jobject, jlong matrixPtr,
         jfloat x0, jfloat y0, jfloat x1, jfloat y1, jlongArray colorArray,
         jfloatArray posArray, jint tileMode, jlong colorSpaceHandle) {
     SkPoint pts[2];
     pts[0].set(x0, y0);
     pts[1].set(x1, y1);

     std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);

     AutoJavaFloatArray autoPos(env, posArray, colors.size());
 #ifdef SK_SCALAR_IS_FLOAT
     SkScalar* pos = autoPos.ptr();
 #else
     #error Need to convert float array to SkScalar array before calling the following function.
 #endif

     sk_sp<SkShader> shader(SkGradientShader::MakeLinear(pts, &colors[0],
                 GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
                 static_cast<SkTileMode>(tileMode), sGradientShaderFlags, nullptr));
     ThrowIAE_IfNull(env, shader);

     const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
     if (matrix) {
         shader = shader->makeWithLocalMatrix(*matrix);
     }

     return reinterpret_cast<jlong>(shader.release());
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static jlong RadialGradient_create(JNIEnv* env, jobject, jlong matrixPtr, jfloat x, jfloat y,
         jfloat radius, jlongArray colorArray, jfloatArray posArray, jint tileMode,
         jlong colorSpaceHandle) {
     SkPoint center;
     center.set(x, y);

     std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);

     AutoJavaFloatArray autoPos(env, posArray, colors.size());
 #ifdef SK_SCALAR_IS_FLOAT
     SkScalar* pos = autoPos.ptr();
 #else
     #error Need to convert float array to SkScalar array before calling the following function.
 #endif

     sk_sp<SkShader> shader = SkGradientShader::MakeRadial(center, radius, &colors[0],
             GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
             static_cast<SkTileMode>(tileMode), sGradientShaderFlags, nullptr);
     ThrowIAE_IfNull(env, shader);

     const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
     if (matrix) {
         shader = shader->makeWithLocalMatrix(*matrix);
     }

     return reinterpret_cast<jlong>(shader.release());
 }

 ///////////////////////////////////////////////////////////////////////////////

 static jlong SweepGradient_create(JNIEnv* env, jobject, jlong matrixPtr, jfloat x, jfloat y,
         jlongArray colorArray, jfloatArray jpositions, jlong colorSpaceHandle) {
     std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);

     AutoJavaFloatArray autoPos(env, jpositions, colors.size());
 #ifdef SK_SCALAR_IS_FLOAT
     SkScalar* pos = autoPos.ptr();
 #else
     #error Need to convert float array to SkScalar array before calling the following function.
 #endif

     sk_sp<SkShader> shader = SkGradientShader::MakeSweep(x, y, &colors[0],
             GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
             sGradientShaderFlags, nullptr);
     ThrowIAE_IfNull(env, shader);

     const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
     if (matrix) {
         shader = shader->makeWithLocalMatrix(*matrix);
     }

     return reinterpret_cast<jlong>(shader.release());
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static jlong ComposeShader_create(JNIEnv* env, jobject o, jlong matrixPtr,
         jlong shaderAHandle, jlong shaderBHandle, jint xfermodeHandle) {
     const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
     SkShader* shaderA = reinterpret_cast<SkShader *>(shaderAHandle);
     SkShader* shaderB = reinterpret_cast<SkShader *>(shaderBHandle);
     SkBlendMode mode = static_cast<SkBlendMode>(xfermodeHandle);
     sk_sp<SkShader> baseShader(SkShaders::Blend(mode,
             sk_ref_sp(shaderA), sk_ref_sp(shaderB)));

     SkShader* shader;

     if (matrix) {
         shader = baseShader->makeWithLocalMatrix(*matrix).release();
     } else {
         shader = baseShader.release();
     }
     return reinterpret_cast<jlong>(shader);
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static jlong RuntimeShader_create(JNIEnv* env, jobject, jlong shaderFactory, jlong matrixPtr,
         jbyteArray inputs, jlong colorSpaceHandle, jboolean isOpaque) {
     SkRuntimeEffect* effect = reinterpret_cast<SkRuntimeEffect*>(shaderFactory);
     AutoJavaByteArray arInputs(env, inputs);

     sk_sp<SkData> fData;
     fData = SkData::MakeWithCopy(arInputs.ptr(), arInputs.length());
     const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
     sk_sp<SkShader> shader = effect->makeShader(fData, nullptr, 0, matrix, isOpaque == JNI_TRUE);
     ThrowIAE_IfNull(env, shader);

     return reinterpret_cast<jlong>(shader.release());
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static jlong RuntimeShader_createShaderFactory(JNIEnv* env, jobject, jstring sksl) {
     ScopedUtfChars strSksl(env, sksl);
     sk_sp<SkRuntimeEffect> effect = std::get<0>(SkRuntimeEffect::Make(SkString(strSksl.c_str())));
     ThrowIAE_IfNull(env, effect);

     return reinterpret_cast<jlong>(effect.release());
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static void Effect_safeUnref(SkRuntimeEffect* effect) {
     SkSafeUnref(effect);
 }

 static jlong RuntimeShader_getNativeFinalizer(JNIEnv*, jobject) {
     return static_cast<jlong>(reinterpret_cast<uintptr_t>(&Effect_safeUnref));
 }

 ///////////////////////////////////////////////////////////////////////////////////////////////

 static const JNINativeMethod gColorMethods[] = {
     { "nativeRGBToHSV",    "(III[F)V", (void*)Color_RGBToHSV   },
     { "nativeHSVToColor",  "(I[F)I",   (void*)Color_HSVToColor }
 };

 static const JNINativeMethod gShaderMethods[] = {
     { "nativeGetFinalizer",   "()J",    (void*)Shader_getNativeFinalizer },
 };

 static const JNINativeMethod gBitmapShaderMethods[] = {
     { "nativeCreate",      "(JJII)J",  (void*)BitmapShader_constructor },
 };

 static const JNINativeMethod gLinearGradientMethods[] = {
     { "nativeCreate",     "(JFFFF[J[FIJ)J",  (void*)LinearGradient_create     },
 };

 static const JNINativeMethod gRadialGradientMethods[] = {
     { "nativeCreate",     "(JFFF[J[FIJ)J",  (void*)RadialGradient_create     },
 };

 static const JNINativeMethod gSweepGradientMethods[] = {
     { "nativeCreate",     "(JFF[J[FJ)J",  (void*)SweepGradient_create     },
 };

 static const JNINativeMethod gComposeShaderMethods[] = {
     { "nativeCreate",      "(JJJI)J",   (void*)ComposeShader_create     },
 };

 static const JNINativeMethod gRuntimeShaderMethods[] = {
     { "nativeGetFinalizer",   "()J",    (void*)RuntimeShader_getNativeFinalizer },
     { "nativeCreate",     "(JJ[BJZ)J",  (void*)RuntimeShader_create     },
     { "nativeCreateShaderFactory",     "(Ljava/lang/String;)J",
       (void*)RuntimeShader_createShaderFactory     },
 };

 int register_android_graphics_Shader(JNIEnv* env)
 {
     android::RegisterMethodsOrDie(env, "android/graphics/Color", gColorMethods,
                                   NELEM(gColorMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/Shader", gShaderMethods,
                                   NELEM(gShaderMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/BitmapShader", gBitmapShaderMethods,
                                   NELEM(gBitmapShaderMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/LinearGradient", gLinearGradientMethods,
                                   NELEM(gLinearGradientMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/RadialGradient", gRadialGradientMethods,
                                   NELEM(gRadialGradientMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/SweepGradient", gSweepGradientMethods,
                                   NELEM(gSweepGradientMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/ComposeShader", gComposeShaderMethods,
                                   NELEM(gComposeShaderMethods));
     android::RegisterMethodsOrDie(env, "android/graphics/RuntimeShader", gRuntimeShaderMethods,
                                   NELEM(gRuntimeShaderMethods));

     return 0;
 }
	#include "GraphicsJNI.h"
	#include "SkColorFilter.h"
	#include "SkGradientShader.h"
	#include "SkImagePriv.h"
	#include "SkShader.h"
	#include "SkBlendMode.h"
	#include "include/effects/SkRuntimeEffect.h"

	#include <vector>

	using namespace android::uirenderer;

	/**
	* By default Skia gradients will interpolate their colors in unpremul space
	* and then premultiply each of the results. We must set this flag to preserve
	* backwards compatiblity by premultiplying the colors of the gradient first,
	* and then interpolating between them.
	*/
	static const uint32_t sGradientShaderFlags = SkGradientShader::kInterpolateColorsInPremul_Flag;

	#define ThrowIAE_IfNull(env, ptr) \
	if (nullptr == ptr) { \
	doThrowIAE(env); \
	return 0; \
	}

	static void Color_RGBToHSV(JNIEnv* env, jobject, jint red, jint green, jint blue, jfloatArray hsvArray)
	{
	SkScalar hsv[3];
	SkRGBToHSV(red, green, blue, hsv);

	AutoJavaFloatArray autoHSV(env, hsvArray, 3);
	float* values = autoHSV.ptr();
	for (int i = 0; i < 3; i++) {
	values[i] = SkScalarToFloat(hsv[i]);
	}
	}

	static jint Color_HSVToColor(JNIEnv* env, jobject, jint alpha, jfloatArray hsvArray)
	{
	AutoJavaFloatArray autoHSV(env, hsvArray, 3);
	#ifdef SK_SCALAR_IS_FLOAT
	SkScalar* hsv = autoHSV.ptr();
	#else
	#error Need to convert float array to SkScalar array before calling the following function.
	#endif

	return static_cast<jint>(SkHSVToColor(alpha, hsv));
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static void Shader_safeUnref(SkShader* shader) {
	SkSafeUnref(shader);
	}

	static jlong Shader_getNativeFinalizer(JNIEnv*, jobject) {
	return static_cast<jlong>(reinterpret_cast<uintptr_t>(&Shader_safeUnref));
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static jlong BitmapShader_constructor(JNIEnv* env, jobject o, jlong matrixPtr, jlong bitmapHandle,
	jint tileModeX, jint tileModeY) {
	const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
	sk_sp<SkImage> image;
	if (bitmapHandle) {
	// Only pass a valid SkBitmap object to the constructor if the Bitmap exists. Otherwise,
	// we'll pass an empty SkBitmap to avoid crashing/excepting for compatibility.
	image = android::bitmap::toBitmap(bitmapHandle).makeImage();
	}

	if (!image.get()) {
	SkBitmap bitmap;
	image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode);
	}
	sk_sp<SkShader> shader = image->makeShader(
	(SkTileMode)tileModeX, (SkTileMode)tileModeY);
	ThrowIAE_IfNull(env, shader.get());

	if (matrix) {
	shader = shader->makeWithLocalMatrix(*matrix);
	}

	return reinterpret_cast<jlong>(shader.release());
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static std::vector<SkColor4f> convertColorLongs(JNIEnv* env, jlongArray colorArray) {
	const size_t count = env->GetArrayLength(colorArray);
	const jlong* colorValues = env->GetLongArrayElements(colorArray, nullptr);

	std::vector<SkColor4f> colors(count);
	for (size_t i = 0; i < count; ++i) {
	colors[i] = GraphicsJNI::convertColorLong(colorValues[i]);
	}

	env->ReleaseLongArrayElements(colorArray, const_cast<jlong*>(colorValues), JNI_ABORT);
	return colors;
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static jlong LinearGradient_create(JNIEnv* env, jobject, jlong matrixPtr,
	jfloat x0, jfloat y0, jfloat x1, jfloat y1, jlongArray colorArray,
	jfloatArray posArray, jint tileMode, jlong colorSpaceHandle) {
	SkPoint pts[2];
	pts[0].set(x0, y0);
	pts[1].set(x1, y1);

	std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);

	AutoJavaFloatArray autoPos(env, posArray, colors.size());
	#ifdef SK_SCALAR_IS_FLOAT
	SkScalar* pos = autoPos.ptr();
	#else
	#error Need to convert float array to SkScalar array before calling the following function.
	#endif

	sk_sp<SkShader> shader(SkGradientShader::MakeLinear(pts, &colors[0],
	GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
	static_cast<SkTileMode>(tileMode), sGradientShaderFlags, nullptr));
	ThrowIAE_IfNull(env, shader);

	const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
	if (matrix) {
	shader = shader->makeWithLocalMatrix(*matrix);
	}

	return reinterpret_cast<jlong>(shader.release());
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static jlong RadialGradient_create(JNIEnv* env, jobject, jlong matrixPtr, jfloat x, jfloat y,
	jfloat radius, jlongArray colorArray, jfloatArray posArray, jint tileMode,
	jlong colorSpaceHandle) {
	SkPoint center;
	center.set(x, y);

	std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);

	AutoJavaFloatArray autoPos(env, posArray, colors.size());
	#ifdef SK_SCALAR_IS_FLOAT
	SkScalar* pos = autoPos.ptr();
	#else
	#error Need to convert float array to SkScalar array before calling the following function.
	#endif

	sk_sp<SkShader> shader = SkGradientShader::MakeRadial(center, radius, &colors[0],
	GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
	static_cast<SkTileMode>(tileMode), sGradientShaderFlags, nullptr);
	ThrowIAE_IfNull(env, shader);

	const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
	if (matrix) {
	shader = shader->makeWithLocalMatrix(*matrix);
	}

	return reinterpret_cast<jlong>(shader.release());
	}

	///////////////////////////////////////////////////////////////////////////////

	static jlong SweepGradient_create(JNIEnv* env, jobject, jlong matrixPtr, jfloat x, jfloat y,
	jlongArray colorArray, jfloatArray jpositions, jlong colorSpaceHandle) {
	std::vector<SkColor4f> colors = convertColorLongs(env, colorArray);

	AutoJavaFloatArray autoPos(env, jpositions, colors.size());
	#ifdef SK_SCALAR_IS_FLOAT
	SkScalar* pos = autoPos.ptr();
	#else
	#error Need to convert float array to SkScalar array before calling the following function.
	#endif

	sk_sp<SkShader> shader = SkGradientShader::MakeSweep(x, y, &colors[0],
	GraphicsJNI::getNativeColorSpace(colorSpaceHandle), pos, colors.size(),
	sGradientShaderFlags, nullptr);
	ThrowIAE_IfNull(env, shader);

	const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
	if (matrix) {
	shader = shader->makeWithLocalMatrix(*matrix);
	}

	return reinterpret_cast<jlong>(shader.release());
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static jlong ComposeShader_create(JNIEnv* env, jobject o, jlong matrixPtr,
	jlong shaderAHandle, jlong shaderBHandle, jint xfermodeHandle) {
	const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
	SkShader* shaderA = reinterpret_cast<SkShader *>(shaderAHandle);
	SkShader* shaderB = reinterpret_cast<SkShader *>(shaderBHandle);
	SkBlendMode mode = static_cast<SkBlendMode>(xfermodeHandle);
	sk_sp<SkShader> baseShader(SkShaders::Blend(mode,
	sk_ref_sp(shaderA), sk_ref_sp(shaderB)));

	SkShader* shader;

	if (matrix) {
	shader = baseShader->makeWithLocalMatrix(*matrix).release();
	} else {
	shader = baseShader.release();
	}
	return reinterpret_cast<jlong>(shader);
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static jlong RuntimeShader_create(JNIEnv* env, jobject, jlong shaderFactory, jlong matrixPtr,
	jbyteArray inputs, jlong colorSpaceHandle, jboolean isOpaque) {
	SkRuntimeEffect* effect = reinterpret_cast<SkRuntimeEffect*>(shaderFactory);
	AutoJavaByteArray arInputs(env, inputs);

	sk_sp<SkData> fData;
	fData = SkData::MakeWithCopy(arInputs.ptr(), arInputs.length());
	const SkMatrix* matrix = reinterpret_cast<const SkMatrix*>(matrixPtr);
	sk_sp<SkShader> shader = effect->makeShader(fData, nullptr, 0, matrix, isOpaque == JNI_TRUE);
	ThrowIAE_IfNull(env, shader);

	return reinterpret_cast<jlong>(shader.release());
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static jlong RuntimeShader_createShaderFactory(JNIEnv* env, jobject, jstring sksl) {
	ScopedUtfChars strSksl(env, sksl);
	sk_sp<SkRuntimeEffect> effect = std::get<0>(SkRuntimeEffect::Make(SkString(strSksl.c_str())));
	ThrowIAE_IfNull(env, effect);

	return reinterpret_cast<jlong>(effect.release());
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static void Effect_safeUnref(SkRuntimeEffect* effect) {
	SkSafeUnref(effect);
	}

	static jlong RuntimeShader_getNativeFinalizer(JNIEnv*, jobject) {
	return static_cast<jlong>(reinterpret_cast<uintptr_t>(&Effect_safeUnref));
	}

	///////////////////////////////////////////////////////////////////////////////////////////////

	static const JNINativeMethod gColorMethods[] = {
	{ "nativeRGBToHSV", "(III[F)V", (void*)Color_RGBToHSV },
	{ "nativeHSVToColor", "(I[F)I", (void*)Color_HSVToColor }
	};

	static const JNINativeMethod gShaderMethods[] = {
	{ "nativeGetFinalizer", "()J", (void*)Shader_getNativeFinalizer },
	};

	static const JNINativeMethod gBitmapShaderMethods[] = {
	{ "nativeCreate", "(JJII)J", (void*)BitmapShader_constructor },
	};

	static const JNINativeMethod gLinearGradientMethods[] = {
	{ "nativeCreate", "(JFFFF[J[FIJ)J", (void*)LinearGradient_create },
	};

	static const JNINativeMethod gRadialGradientMethods[] = {
	{ "nativeCreate", "(JFFF[J[FIJ)J", (void*)RadialGradient_create },
	};

	static const JNINativeMethod gSweepGradientMethods[] = {
	{ "nativeCreate", "(JFF[J[FJ)J", (void*)SweepGradient_create },
	};

	static const JNINativeMethod gComposeShaderMethods[] = {
	{ "nativeCreate", "(JJJI)J", (void*)ComposeShader_create },
	};

	static const JNINativeMethod gRuntimeShaderMethods[] = {
	{ "nativeGetFinalizer", "()J", (void*)RuntimeShader_getNativeFinalizer },
	{ "nativeCreate", "(JJ[BJZ)J", (void*)RuntimeShader_create },
	{ "nativeCreateShaderFactory", "(Ljava/lang/String;)J",
	(void*)RuntimeShader_createShaderFactory },
	};

	int register_android_graphics_Shader(JNIEnv* env)
	{
	android::RegisterMethodsOrDie(env, "android/graphics/Color", gColorMethods,
	NELEM(gColorMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/Shader", gShaderMethods,
	NELEM(gShaderMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/BitmapShader", gBitmapShaderMethods,
	NELEM(gBitmapShaderMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/LinearGradient", gLinearGradientMethods,
	NELEM(gLinearGradientMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/RadialGradient", gRadialGradientMethods,
	NELEM(gRadialGradientMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/SweepGradient", gSweepGradientMethods,
	NELEM(gSweepGradientMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/ComposeShader", gComposeShaderMethods,
	NELEM(gComposeShaderMethods));
	android::RegisterMethodsOrDie(env, "android/graphics/RuntimeShader", gRuntimeShaderMethods,
	NELEM(gRuntimeShaderMethods));

	return 0;
	}