Add 3D transforms support to all gradients. (14830948) · Commits · e / os / android_frameworks_base

libs/hwui/ProgramCache.cpp

+3 −10

Original line number	Diff line number	Diff line
		@@ -37,12 +37,8 @@ const char* gVS_Header_Uniforms_HasGradient[3] = {
		// Linear
		"uniform mat4 screenSpace;\n",
		// Circular
		"uniform vec2 gradientStart;\n"
		"uniform mat4 gradientMatrix;\n"
		"uniform mat4 screenSpace;\n",
		// Sweep
		"uniform vec2 gradientStart;\n"
		"uniform mat4 gradientMatrix;\n"
		"uniform mat4 screenSpace;\n"
		};
		const char* gVS_Header_Uniforms_HasBitmap =
		@@ -68,11 +64,9 @@ const char* gVS_Main_OutGradient[3] = {
		// Linear
		" index = (screenSpace * position).x;\n",
		// Circular
		" vec4 location = screenSpace * position;\n"
		" circular = (gradientMatrix * vec4(location.xy - gradientStart, 0.0, 0.0)).xy;\n",
		" circular = (screenSpace * position).xy;\n",
		// Sweep
		" vec4 location = screenSpace * position;\n"
		" sweep = (gradientMatrix * vec4(location.xy - gradientStart, 0.0, 0.0)).xy;\n"
		" sweep = (screenSpace * position).xy;\n"
		};
		const char* gVS_Main_OutBitmapTexCoords =
		" vec4 bitmapCoords = textureTransform * position;\n"
		@@ -98,7 +92,6 @@ const char* gFS_Uniforms_GradientSampler[3] = {
		// Linear
		"uniform sampler2D gradientSampler;\n",
		// Circular
		"uniform float gradientRadius;\n"
		"uniform sampler2D gradientSampler;\n",
		// Sweep
		"uniform sampler2D gradientSampler;\n"
		@@ -130,7 +123,7 @@ const char* gFS_Main_FetchGradient[3] = {
		// Linear
		" vec4 gradientColor = texture2D(gradientSampler, vec2(index, 0.5));\n",
		// Circular
		" float index = length(circular) * gradientRadius;\n"
		" float index = length(circular);\n"
		" vec4 gradientColor = texture2D(gradientSampler, vec2(index, 0.5));\n",
		// Sweep
		" float index = atan(sweep.y, sweep.x) * 0.15915494309; // inv(2 * PI)\n"

libs/hwui/SkiaShader.cpp

+38 −65

Original line number	Diff line number	Diff line
		@@ -49,7 +49,8 @@ static const GLint gTileModes[] = {

		SkiaShader::SkiaShader(Type type, SkShader* key, SkShader::TileMode tileX,
		SkShader::TileMode tileY, SkMatrix* matrix, bool blend):
		mType(type), mKey(key), mTileX(tileX), mTileY(tileY), mMatrix(matrix), mBlend(blend) {
		mType(type), mKey(key), mTileX(tileX), mTileY(tileY), mBlend(blend) {
		setMatrix(matrix);
		}

		SkiaShader::~SkiaShader() {
		@@ -69,6 +70,11 @@ void SkiaShader::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapT);
		}

		void SkiaShader::computeScreenSpaceMatrix(mat4& screenSpace, const mat4& modelView) {
		screenSpace.loadMultiply(mUnitMatrix, mShaderMatrix);
		screenSpace.multiply(modelView);
		}

		///////////////////////////////////////////////////////////////////////////////
		// Bitmap shader
		///////////////////////////////////////////////////////////////////////////////
		@@ -76,6 +82,7 @@ void SkiaShader::bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint
		SkiaBitmapShader::SkiaBitmapShader(SkBitmap* bitmap, SkShader* key, SkShader::TileMode tileX,
		SkShader::TileMode tileY, SkMatrix* matrix, bool blend):
		SkiaShader(kBitmap, key, tileX, tileY, matrix, blend), mBitmap(bitmap), mTexture(NULL) {
		updateLocalMatrix(matrix);
		}

		void SkiaBitmapShader::describe(ProgramDescription& description, const Extensions& extensions) {
		@@ -116,14 +123,7 @@ void SkiaBitmapShader::setupProgram(Program* program, const mat4& modelView,
		const float height = texture->height;

		mat4 textureTransform;
		if (mMatrix) {
		SkMatrix inverse;
		mMatrix->invert(&inverse);
		textureTransform.load(inverse);
		textureTransform.multiply(modelView);
		} else {
		textureTransform.load(modelView);
		}
		computeScreenSpaceMatrix(textureTransform, modelView);

		// Uniforms
		bindTexture(texture->id, mWrapS, mWrapT, textureSlot);
		@@ -136,15 +136,7 @@ void SkiaBitmapShader::setupProgram(Program* program, const mat4& modelView,
		void SkiaBitmapShader::updateTransforms(Program* program, const mat4& modelView,
		const Snapshot& snapshot) {
		mat4 textureTransform;
		if (mMatrix) {
		SkMatrix inverse;
		mMatrix->invert(&inverse);
		textureTransform.load(inverse);
		textureTransform.multiply(modelView);
		} else {
		textureTransform.load(modelView);
		}

		computeScreenSpaceMatrix(textureTransform, modelView);
		glUniformMatrix4fv(program->getUniform("textureTransform"), 1,
		GL_FALSE, &textureTransform.data[0]);
		}
		@@ -192,23 +184,6 @@ void SkiaLinearGradientShader::describe(ProgramDescription& description,
		description.gradientType = ProgramDescription::kGradientLinear;
		}

		void SkiaLinearGradientShader::computeScreenSpaceMatrix(mat4& screenSpace, const mat4& modelView) {
		screenSpace.loadMultiply(mUnitMatrix, mShaderMatrix);
		screenSpace.multiply(modelView);
		}

		void SkiaLinearGradientShader::updateLocalMatrix(const SkMatrix* matrix) {
		if (matrix) {
		mat4 localMatrix(*matrix);
		mShaderMatrix.loadInverse(localMatrix);
		}
		}

		void SkiaLinearGradientShader::setMatrix(SkMatrix* matrix) {
		SkiaShader::setMatrix(matrix);
		updateLocalMatrix(matrix);
		}

		void SkiaLinearGradientShader::setupProgram(Program* program, const mat4& modelView,
		const Snapshot& snapshot, GLuint* textureUnit) {
		GLuint textureSlot = (*textureUnit)++;
		@@ -239,12 +214,23 @@ void SkiaLinearGradientShader::updateTransforms(Program* program, const mat4& mo
		// Circular gradient shader
		///////////////////////////////////////////////////////////////////////////////

		static void toCircularUnitMatrix(const float x, const float y, const float radius,
		SkMatrix* matrix) {
		const float inv = 1.0f / radius;
		matrix->setTranslate(-x, -y);
		matrix->postScale(inv, inv);
		}

		SkiaCircularGradientShader::SkiaCircularGradientShader(float x, float y, float radius,
		uint32_t* colors, float* positions, int count, SkShader* key, SkShader::TileMode tileMode,
		SkMatrix* matrix, bool blend):
		SkiaSweepGradientShader(kCircularGradient, x, y, colors, positions, count, key,
		tileMode, matrix, blend),
		mRadius(radius) {
		tileMode, matrix, blend) {
		SkMatrix unitMatrix;
		toCircularUnitMatrix(x, y, radius, &unitMatrix);
		mUnitMatrix.load(unitMatrix);

		updateLocalMatrix(matrix);
		}

		void SkiaCircularGradientShader::describe(ProgramDescription& description,
		@@ -253,28 +239,31 @@ void SkiaCircularGradientShader::describe(ProgramDescription& description,
		description.gradientType = ProgramDescription::kGradientCircular;
		}

		void SkiaCircularGradientShader::setupProgram(Program* program, const mat4& modelView,
		const Snapshot& snapshot, GLuint* textureUnit) {
		SkiaSweepGradientShader::setupProgram(program, modelView, snapshot, textureUnit);
		glUniform1f(program->getUniform("gradientRadius"), 1.0f / mRadius);
		}

		///////////////////////////////////////////////////////////////////////////////
		// Sweep gradient shader
		///////////////////////////////////////////////////////////////////////////////

		static void toSweepUnitMatrix(const float x, const float y, SkMatrix* matrix) {
		matrix->setTranslate(-x, -y);
		}

		SkiaSweepGradientShader::SkiaSweepGradientShader(float x, float y, uint32_t* colors,
		float* positions, int count, SkShader* key, SkMatrix* matrix, bool blend):
		SkiaShader(kSweepGradient, key, SkShader::kClamp_TileMode,
		SkShader::kClamp_TileMode, matrix, blend),
		mX(x), mY(y), mColors(colors), mPositions(positions), mCount(count) {
		mColors(colors), mPositions(positions), mCount(count) {
		SkMatrix unitMatrix;
		toSweepUnitMatrix(x, y, &unitMatrix);
		mUnitMatrix.load(unitMatrix);

		updateLocalMatrix(matrix);
		}

		SkiaSweepGradientShader::SkiaSweepGradientShader(Type type, float x, float y, uint32_t* colors,
		float* positions, int count, SkShader* key, SkShader::TileMode tileMode,
		SkMatrix* matrix, bool blend):
		SkiaShader(type, key, tileMode, tileMode, matrix, blend),
		mX(x), mY(y), mColors(colors), mPositions(positions), mCount(count) {
		mColors(colors), mPositions(positions), mCount(count) {
		}

		SkiaSweepGradientShader::~SkiaSweepGradientShader() {
		@@ -298,35 +287,19 @@ void SkiaSweepGradientShader::setupProgram(Program* program, const mat4& modelVi
		texture = mGradientCache->addLinearGradient(mKey, mColors, mPositions, mCount);
		}

		float left = mX;
		float top = mY;

		mat4 shaderMatrix;
		if (mMatrix) {
		shaderMatrix.load(*mMatrix);
		shaderMatrix.mapPoint(left, top);
		}

		mat4 copy(shaderMatrix);
		shaderMatrix.loadInverse(copy);

		snapshot.transform->mapPoint(left, top);

		mat4 screenSpace(*snapshot.transform);
		screenSpace.multiply(modelView);
		mat4 screenSpace;
		computeScreenSpaceMatrix(screenSpace, modelView);

		// Uniforms
		bindTexture(texture->id, gTileModes[mTileX], gTileModes[mTileY], textureSlot);
		glUniform1i(program->getUniform("gradientSampler"), textureSlot);
		glUniformMatrix4fv(program->getUniform("gradientMatrix"), 1, GL_FALSE, &shaderMatrix.data[0]);
		glUniform2f(program->getUniform("gradientStart"), left, top);
		glUniformMatrix4fv(program->getUniform("screenSpace"), 1, GL_FALSE, &screenSpace.data[0]);
		}

		void SkiaSweepGradientShader::updateTransforms(Program* program, const mat4& modelView,
		const Snapshot& snapshot) {
		mat4 screenSpace(*snapshot.transform);
		screenSpace.multiply(modelView);
		mat4 screenSpace;
		computeScreenSpaceMatrix(screenSpace, modelView);
		glUniformMatrix4fv(program->getUniform("screenSpace"), 1, GL_FALSE, &screenSpace.data[0]);
		}

libs/hwui/SkiaShader.h

+17 −18

Original line number	Diff line number	Diff line
		@@ -77,10 +77,21 @@ struct SkiaShader {
		const Snapshot& snapshot) {
		}

		virtual void setMatrix(SkMatrix* matrix) {
		mMatrix = matrix;
		void setMatrix(SkMatrix* matrix) {
		updateLocalMatrix(matrix);
		}

		void updateLocalMatrix(const SkMatrix* matrix) {
		if (matrix) {
		mat4 localMatrix(*matrix);
		mShaderMatrix.loadInverse(localMatrix);
		} else {
		mShaderMatrix.loadIdentity();
		}
		}

		void computeScreenSpaceMatrix(mat4& screenSpace, const mat4& modelView);

		protected:
		inline void bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT, GLuint textureUnit);

		@@ -88,11 +99,13 @@ protected:
		SkShader* mKey;
		SkShader::TileMode mTileX;
		SkShader::TileMode mTileY;
		SkMatrix* mMatrix;
		bool mBlend;

		TextureCache* mTextureCache;
		GradientCache* mGradientCache;

		mat4 mUnitMatrix;
		mat4 mShaderMatrix;
		}; // struct SkiaShader


		@@ -139,15 +152,7 @@ struct SkiaLinearGradientShader: public SkiaShader {
		GLuint* textureUnit);
		void updateTransforms(Program* program, const mat4& modelView, const Snapshot& snapshot);

		void setMatrix(SkMatrix* matrix);

		private:
		void updateLocalMatrix(const SkMatrix* matrix);
		void computeScreenSpaceMatrix(mat4& screenSpace, const mat4& modelView);

		mat4 mUnitMatrix;
		mat4 mShaderMatrix;

		float* mBounds;
		uint32_t* mColors;
		float* mPositions;
		@@ -163,7 +168,7 @@ struct SkiaSweepGradientShader: public SkiaShader {
		~SkiaSweepGradientShader();

		virtual void describe(ProgramDescription& description, const Extensions& extensions);
		virtual void setupProgram(Program* program, const mat4& modelView, const Snapshot& snapshot,
		void setupProgram(Program* program, const mat4& modelView, const Snapshot& snapshot,
		GLuint* textureUnit);
		void updateTransforms(Program* program, const mat4& modelView, const Snapshot& snapshot);

		@@ -171,7 +176,6 @@ protected:
		SkiaSweepGradientShader(Type type, float x, float y, uint32_t* colors, float* positions,
		int count, SkShader* key, SkShader::TileMode tileMode, SkMatrix* matrix, bool blend);

		float mX, mY;
		uint32_t* mColors;
		float* mPositions;
		int mCount;
		@@ -185,11 +189,6 @@ struct SkiaCircularGradientShader: public SkiaSweepGradientShader {
		int count, SkShader* key,SkShader::TileMode tileMode, SkMatrix* matrix, bool blend);

		void describe(ProgramDescription& description, const Extensions& extensions);
		void setupProgram(Program* program, const mat4& modelView, const Snapshot& snapshot,
		GLuint* textureUnit);

		private:
		float mRadius;
		}; // struct SkiaCircularGradientShader

		/**

tests/HwAccelerationTest/src/com/android/test/hwui/GradientsActivity.java

+102 −1

Original line number	Diff line number	Diff line
		@@ -18,11 +18,16 @@ package com.android.test.hwui;

		import android.app.Activity;
		import android.content.Context;
		import android.graphics.Bitmap;
		import android.graphics.BitmapFactory;
		import android.graphics.BitmapShader;
		import android.graphics.Canvas;
		import android.graphics.LinearGradient;
		import android.graphics.RadialGradient;
		import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.Shader;
		import android.graphics.SweepGradient;
		import android.os.Bundle;
		import android.view.Gravity;
		import android.view.View;
		@@ -36,8 +41,13 @@ public class GradientsActivity extends Activity {
		super.onCreate(savedInstanceState);

		final FrameLayout layout = new FrameLayout(this);

		final ShadersView shadersView = new ShadersView(this);
		final GradientView gradientView = new GradientView(this);
		final RadialGradientView radialGradientView = new RadialGradientView(this);
		final SweepGradientView sweepGradientView = new SweepGradientView(this);
		final BitmapView bitmapView = new BitmapView(this);

		final SeekBar rotateView = new SeekBar(this);
		rotateView.setMax(360);
		rotateView.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
		@@ -52,12 +62,28 @@ public class GradientsActivity extends Activity {
		@Override
		public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
		gradientView.setRotationY((float) progress);
		radialGradientView.setRotationX((float) progress);
		sweepGradientView.setRotationY((float) progress);
		bitmapView.setRotationX((float) progress);
		}
		});

		layout.addView(shadersView);
		layout.addView(gradientView, new FrameLayout.LayoutParams(
		200, 200, Gravity.CENTER));

		FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(200, 200, Gravity.CENTER);
		lp.setMargins(220, 0, 0, 0);
		layout.addView(radialGradientView, lp);

		lp = new FrameLayout.LayoutParams(200, 200, Gravity.CENTER);
		lp.setMargins(440, 0, 0, 0);
		layout.addView(sweepGradientView, lp);

		lp = new FrameLayout.LayoutParams(200, 200, Gravity.CENTER);
		lp.setMargins(220, -220, 0, 0);
		layout.addView(bitmapView, lp);

		layout.addView(rotateView, new FrameLayout.LayoutParams(
		300, FrameLayout.LayoutParams.WRAP_CONTENT,
		Gravity.CENTER_HORIZONTAL \| Gravity.BOTTOM));
		@@ -65,6 +91,32 @@ public class GradientsActivity extends Activity {
		setContentView(layout);
		}

		static class BitmapView extends View {
		private final Paint mPaint;

		BitmapView(Context c) {
		super(c);

		Bitmap texture = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1);
		BitmapShader shader = new BitmapShader(texture, Shader.TileMode.REPEAT,
		Shader.TileMode.REPEAT);
		mPaint = new Paint();
		mPaint.setShader(shader);
		}

		@Override
		protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		setMeasuredDimension(200, 200);
		}

		@Override
		protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		canvas.drawRect(0.0f, 0.0f, getWidth(), getHeight(), mPaint);
		}
		}

		static class GradientView extends View {
		private final Paint mPaint;

		@@ -90,6 +142,55 @@ public class GradientsActivity extends Activity {
		}
		}

		static class RadialGradientView extends View {
		private final Paint mPaint;

		RadialGradientView(Context c) {
		super(c);

		RadialGradient gradient = new RadialGradient(0.0f, 0.0f, 100.0f, 0xff000000, 0xffffffff,
		Shader.TileMode.MIRROR);
		mPaint = new Paint();
		mPaint.setShader(gradient);
		}

		@Override
		protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		setMeasuredDimension(200, 200);
		}

		@Override
		protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		canvas.drawRect(0.0f, 0.0f, getWidth(), getHeight(), mPaint);
		}
		}

		static class SweepGradientView extends View {
		private final Paint mPaint;

		SweepGradientView(Context c) {
		super(c);

		SweepGradient gradient = new SweepGradient(100.0f, 100.0f, 0xff000000, 0xffffffff);
		mPaint = new Paint();
		mPaint.setShader(gradient);
		}

		@Override
		protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		setMeasuredDimension(200, 200);
		}

		@Override
		protected void onDraw(Canvas canvas) {
		super.onDraw(canvas);
		canvas.drawRect(0.0f, 0.0f, getWidth(), getHeight(), mPaint);
		}
		}

		static class ShadersView extends View {
		private final Paint mPaint;
		private final float mDrawWidth;