Add support for BitmapShader. (d27977d1) · Commits · e / os / android_frameworks_base

core/java/android/view/GLES20Canvas.java

+38 −1

Original line number	Diff line number	Diff line
		@@ -17,16 +17,21 @@
		package android.view;

		import android.graphics.Bitmap;
		import android.graphics.BitmapShader;
		import android.graphics.Canvas;
		import android.graphics.DrawFilter;
		import android.graphics.LinearGradient;
		import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.Path;
		import android.graphics.Picture;
		import android.graphics.PorterDuff;
		import android.graphics.RadialGradient;
		import android.graphics.Rect;
		import android.graphics.RectF;
		import android.graphics.Region;
		import android.graphics.Shader;
		import android.graphics.SweepGradient;

		import javax.microedition.khronos.opengles.GL;

		@@ -369,6 +374,7 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) {
		// Shaders are ignored when drawing patches
		final int nativePaint = paint == null ? 0 : paint.mNativePaint;
		nDrawPatch(mRenderer, bitmap.mNativeBitmap, chunks, dst.left, dst.top,
		dst.right, dst.bottom, nativePaint);
		@@ -379,6 +385,7 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) {
		// Shaders are ignored when drawing bitmaps
		final int nativePaint = paint == null ? 0 : paint.mNativePaint;
		nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, nativePaint);
		}
		@@ -387,6 +394,7 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) {
		// Shaders are ignored when drawing bitmaps
		final int nativePaint = paint == null ? 0 : paint.mNativePaint;
		nDrawBitmap(mRenderer, bitmap.mNativeBitmap, matrix.native_instance, nativePaint);
		}
		@@ -395,6 +403,7 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) {
		// Shaders are ignored when drawing bitmaps
		final int nativePaint = paint == null ? 0 : paint.mNativePaint;
		nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom,
		dst.left, dst.top, dst.right, dst.bottom, nativePaint
		@@ -403,6 +412,7 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) {
		// Shaders are ignored when drawing bitmaps
		final int nativePaint = paint == null ? 0 : paint.mNativePaint;
		nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom,
		dst.left, dst.top, dst.right, dst.bottom, nativePaint
		@@ -416,6 +426,7 @@ class GLES20Canvas extends Canvas {
		@Override
		public void drawBitmap(int[] colors, int offset, int stride, float x, float y,
		int width, int height, boolean hasAlpha, Paint paint) {
		// Shaders are ignored when drawing bitmaps
		final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;
		final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config);
		final int nativePaint = paint == null ? 0 : paint.mNativePaint;
		@@ -426,6 +437,7 @@ class GLES20Canvas extends Canvas {
		@Override
		public void drawBitmap(int[] colors, int offset, int stride, int x, int y,
		int width, int height, boolean hasAlpha, Paint paint) {
		// Shaders are ignored when drawing bitmaps
		drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint);
		}

		@@ -532,7 +544,9 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawRect(float left, float top, float right, float bottom, Paint paint) {
		boolean hasShader = setupShader(paint);
		nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint);
		if (hasShader) nResetShader(mRenderer);
		}

		private native void nDrawRect(int renderer, float left, float top, float right, float bottom,
		@@ -555,7 +569,7 @@ class GLES20Canvas extends Canvas {

		@Override
		public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) {
		throw new UnsupportedOperationException();
		// TODO: Implement
		}

		@Override
		@@ -607,4 +621,27 @@ class GLES20Canvas extends Canvas {
		int indexOffset, int indexCount, Paint paint) {
		// TODO: Implement
		}

		private boolean setupShader(Paint paint) {
		final Shader shader = paint.getShader();
		if (shader != null) {
		if (shader instanceof BitmapShader) {
		final BitmapShader bs = (BitmapShader) shader;
		nSetupBitmapShader(mRenderer, bs.native_instance, bs.mBitmap.mNativeBitmap,
		bs.mTileX, bs.mTileY, bs.mLocalMatrix);
		return true;
		} else if (shader instanceof LinearGradient) {
		// TODO: Implement
		} else if (shader instanceof RadialGradient) {
		// TODO: Implement
		} else if (shader instanceof SweepGradient) {
		// TODO: Implement
		}
		}
		return false;
		}

		private native void nSetupBitmapShader(int renderer, int shader, int bitmap,
		int tileX, int tileY, int matrix);
		private native void nResetShader(int renderer);
		}

core/jni/android_view_GLES20Canvas.cpp

+19 −0

Original line number	Diff line number	Diff line
		@@ -220,6 +220,22 @@ static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas,
		renderer->drawRect(left, top, right, bottom, paint);
		}

		// ----------------------------------------------------------------------------
		// Shaders
		// ----------------------------------------------------------------------------

		static void android_view_GLES20Canvas_resetShader(JNIEnv* env, jobject canvas,
		OpenGLRenderer* renderer) {
		renderer->resetShader();
		}

		static void android_view_GLES20Canvas_setupBitmapShader(JNIEnv* env, jobject canvas,
		OpenGLRenderer* renderer, SkShader* shader, SkBitmap* bitmap,
		SkShader::TileMode tileX, SkShader::TileMode tileY, SkMatrix* matrix) {
		renderer->setupBitmapShader(bitmap, tileX, tileY, matrix,
		(shader->getFlags() & SkShader::kOpaqueAlpha_Flag) == 0);
		}

		// ----------------------------------------------------------------------------
		// JNI Glue
		// ----------------------------------------------------------------------------
		@@ -259,6 +275,9 @@ static JNINativeMethod gMethods[] = {
		{ "nDrawColor", "(III)V", (void*) android_view_GLES20Canvas_drawColor },
		{ "nDrawRect", "(IFFFFI)V", (void*) android_view_GLES20Canvas_drawRect },

		{ "nResetShader", "(I)V", (void*) android_view_GLES20Canvas_resetShader },
		{ "nSetupBitmapShader", "(IIIIII)V", (void*) android_view_GLES20Canvas_setupBitmapShader },

		{ "nGetClipBounds", "(ILandroid/graphics/Rect;)Z",
		(void*) android_view_GLES20Canvas_getClipBounds },
		};

graphics/java/android/graphics/Shader.java

+15 −4

Original line number	Diff line number	Diff line
		@@ -23,9 +23,19 @@ package android.graphics;
		* drawn with that paint will get its color(s) from the shader.
		*/
		public class Shader {
		/**
		* Local matrix native instance.
		*
		* @hide
		*/
		public int mLocalMatrix;

		// this is set by subclasses, but don't make it public
		/* package */ int native_instance;
		/**
		* This is set by subclasses, but don't make it public.
		*
		* @hide
		*/
		public int native_instance;

		public enum TileMode {
		/**
		@@ -64,11 +74,12 @@ public class Shader {
		* @param localM The shader's new local matrix, or null to specify identity
		*/
		public void setLocalMatrix(Matrix localM) {
		nativeSetLocalMatrix(native_instance,
		localM != null ? localM.native_instance : 0);
		mLocalMatrix = localM != null ? localM.native_instance : 0;
		nativeSetLocalMatrix(native_instance, mLocalMatrix);
		}

		protected void finalize() throws Throwable {
		super.finalize();
		nativeDestructor(native_instance);
		}

libs/hwui/OpenGLRenderer.cpp

+121 −33

Original line number	Diff line number	Diff line
		@@ -90,6 +90,12 @@ static const Blender gBlends[] = {
		{ SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }
		};

		static const GLint gTileModes[] = {
		GL_CLAMP_TO_EDGE, // == SkShader::kClamp_TileMode
		GL_REPEAT, // == SkShader::kRepeat_Mode
		GL_MIRRORED_REPEAT // == SkShader::kMirror_TileMode
		};

		///////////////////////////////////////////////////////////////////////////////
		// Constructors/destructor
		///////////////////////////////////////////////////////////////////////////////
		@@ -116,9 +122,15 @@ OpenGLRenderer::OpenGLRenderer():
		LOGD(" Using default layer cache size of %dMB", DEFAULT_LAYER_CACHE_SIZE);
		}

		mDrawColorShader = new DrawColorProgram;
		mDrawTextureShader = new DrawTextureProgram;
		mCurrentShader = mDrawTextureShader;
		mDrawColorProgram = new DrawColorProgram;
		mDrawTextureProgram = new DrawTextureProgram;
		mCurrentProgram = mDrawTextureProgram;

		mShader = kShaderNone;
		mShaderTileX = SkShader::kClamp_TileMode;
		mShaderTileY = SkShader::kClamp_TileMode;
		mShaderMatrix = NULL;
		mShaderBitmap = NULL;

		memcpy(mDrawTextureVertices, gDrawTextureVertices, sizeof(gDrawTextureVertices));
		}
		@@ -295,7 +307,7 @@ int OpenGLRenderer::saveLayerAlpha(float left, float top, float right, float bot
		bool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top,
		float right, float bottom, int alpha, SkXfermode::Mode mode,int flags) {

		LAYER_LOGD("Requesting layer %dx%d", size.width, size.height);
		LAYER_LOGD("Requesting layer %fx%f", right - left, bottom - top);
		LAYER_LOGD("Layer cache size = %d", mLayerCache.getSize());

		GLuint previousFbo = snapshot->previous.get() ? snapshot->previous->fbo : 0;
		@@ -327,7 +339,7 @@ bool OpenGLRenderer::createLayer(sp<Snapshot> snapshot, float left, float top,
		saveSnapshot();
		// TODO: This doesn't preserve other transformations (check Skia first)
		mSnapshot->transform.loadTranslate(-left, -top, 0.0f);
		mSnapshot->clipRect.set(left, top, right, bottom);
		mSnapshot->setClip(left, top, right, bottom);
		mSnapshot->height = bottom - top;
		setScissorFromClip();

		@@ -512,50 +524,125 @@ void OpenGLRenderer::drawRect(float left, float top, float right, float bottom,
		// Skia draws using the color's alpha channel if < 255
		// Otherwise, it uses the paint's alpha
		int color = p->getColor();
		if (((color >> 24) & 0xFF) == 255) {
		if (((color >> 24) & 0xff) == 255) {
		color \|= p->getAlpha() << 24;
		}

		drawColorRect(left, top, right, bottom, color, mode);
		}

		///////////////////////////////////////////////////////////////////////////////
		// Shaders
		///////////////////////////////////////////////////////////////////////////////

		void OpenGLRenderer::resetShader() {
		mShader = OpenGLRenderer::kShaderNone;
		mShaderBlend = false;
		mShaderTileX = SkShader::kClamp_TileMode;
		mShaderTileY = SkShader::kClamp_TileMode;
		}

		void OpenGLRenderer::setupBitmapShader(SkBitmap* bitmap, SkShader::TileMode tileX,
		SkShader::TileMode tileY, SkMatrix* matrix, bool hasAlpha) {
		mShader = kShaderBitmap;
		mShaderBlend = hasAlpha;
		mShaderBitmap = bitmap;
		mShaderTileX = tileX;
		mShaderTileY = tileY;
		mShaderMatrix = matrix;
		}

		///////////////////////////////////////////////////////////////////////////////
		// Drawing implementation
		///////////////////////////////////////////////////////////////////////////////

		void OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom,
		int color, SkXfermode::Mode mode, bool ignoreTransform) {
		// If a shader is set, preserve only the alpha
		if (mShader != kShaderNone) {
		color \|= 0x00ffffff;
		}

		// Render using pre-multiplied alpha
		const int alpha = (color >> 24) & 0xFF;
		const GLfloat a = alpha / 255.0f;
		const GLfloat r = ((color >> 16) & 0xFF) / 255.0f;
		const GLfloat g = ((color >> 8) & 0xFF) / 255.0f;
		const GLfloat b = ((color ) & 0xFF) / 255.0f;
		const GLfloat r = a * ((color >> 16) & 0xFF) / 255.0f;
		const GLfloat g = a * ((color >> 8) & 0xFF) / 255.0f;
		const GLfloat b = a * ((color ) & 0xFF) / 255.0f;

		switch (mShader) {
		case kShaderBitmap:
		drawBitmapShader(left, top, right, bottom, a, mode);
		return;
		default:
		break;
		}

		// Pre-multiplication happens when setting the shader color
		chooseBlending(alpha < 255, mode);
		chooseBlending(alpha < 255 \|\| mShaderBlend, mode);

		mModelView.loadTranslate(left, top, 0.0f);
		mModelView.scale(right - left, bottom - top, 1.0f);

		const bool inUse = useShader(mDrawColorShader);
		// TODO: Pick the program matching the current shader
		sp<DrawColorProgram> program = mDrawColorProgram;
		if (!useProgram(program)) {
		const GLvoid* p = &gDrawColorVertices[0].position[0];
		glVertexAttribPointer(program->position, 2, GL_FLOAT, GL_FALSE,
		gDrawColorVertexStride, p);
		}

		if (!ignoreTransform) {
		mDrawColorShader->set(mOrthoMatrix, mModelView, mSnapshot->transform);
		program->set(mOrthoMatrix, mModelView, mSnapshot->transform);
		} else {
		mat4 identity;
		mDrawColorShader->set(mOrthoMatrix, mModelView, identity);
		program->set(mOrthoMatrix, mModelView, identity);
		}

		if (!inUse) {
		const GLvoid* p = &gDrawColorVertices[0].position[0];
		glVertexAttribPointer(mDrawColorShader->position, 2, GL_FLOAT, GL_FALSE,
		gDrawColorVertexStride, p);
		}
		// Render using pre-multiplied alpha
		glUniform4f(mDrawColorShader->color, r * a, g * a, b * a, a);
		glUniform4f(program->color, r, g, b, a);

		glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawColorVertexCount);
		}

		void OpenGLRenderer::drawBitmapShader(float left, float top, float right, float bottom,
		float alpha, SkXfermode::Mode mode) {
		const Texture* texture = mTextureCache.get(mShaderBitmap);

		const float width = texture->width;
		const float height = texture->height;

		// This could be done in the vertex shader but we have only 4 vertices
		float u1 = 0.0f;
		float v1 = 0.0f;
		float u2 = right - left;
		float v2 = bottom - top;

		if (mShaderMatrix) {
		SkMatrix inverse;
		mShaderMatrix->invert(&inverse);
		mat4 m(inverse);
		Rect r(u1, v1, u2, v2);
		m.mapRect(r);

		u1 = r.left;
		u2 = r.right;
		v1 = r.top;
		v2 = r.bottom;
		}

		u1 /= width;
		u2 /= width;
		v1 /= height;
		v2 /= height;

		resetDrawTextureTexCoords(u1, v1, u2, v2);

		drawTextureMesh(left, top, right, bottom, texture->id, alpha, mode, texture->blend,
		&mDrawTextureVertices[0].position[0], &mDrawTextureVertices[0].texture[0], NULL);

		resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
		}

		void OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom,
		const Texture* texture, const SkPaint* paint) {
		int alpha;
		@@ -578,21 +665,22 @@ void OpenGLRenderer::drawTextureMesh(float left, float top, float right, float b
		mModelView.loadTranslate(left, top, 0.0f);
		mModelView.scale(right - left, bottom - top, 1.0f);

		useShader(mDrawTextureShader);
		mDrawTextureShader->set(mOrthoMatrix, mModelView, mSnapshot->transform);
		useProgram(mDrawTextureProgram);
		mDrawTextureProgram->set(mOrthoMatrix, mModelView, mSnapshot->transform);

		chooseBlending(blend \|\| alpha < 1.0f, mode);

		// TODO: Only bind/set parameters when needed
		glBindTexture(GL_TEXTURE_2D, texture);

		// TODO handle tiling and filtering here
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gTileModes[mShaderTileX]);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gTileModes[mShaderTileY]);

		// Always premultiplied
		glUniform4f(mDrawTextureShader->color, alpha, alpha, alpha, alpha);
		glUniform4f(mDrawTextureProgram->color, alpha, alpha, alpha, alpha);

		glVertexAttribPointer(mDrawTextureShader->position, 2, GL_FLOAT, GL_FALSE,
		glVertexAttribPointer(mDrawTextureProgram->position, 2, GL_FLOAT, GL_FALSE,
		gDrawTextureVertexStride, vertices);
		glVertexAttribPointer(mDrawTextureShader->texCoords, 2, GL_FLOAT, GL_FALSE,
		glVertexAttribPointer(mDrawTextureProgram->texCoords, 2, GL_FLOAT, GL_FALSE,
		gDrawTextureVertexStride, texCoords);

		if (!indices) {
		@@ -630,11 +718,11 @@ void OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode, bool isPr
		mBlend = blend;
		}

		bool OpenGLRenderer::useShader(const sp<Program>& shader) {
		if (!shader->isInUse()) {
		mCurrentShader->remove();
		shader->use();
		mCurrentShader = shader;
		bool OpenGLRenderer::useProgram(const sp<Program>& program) {
		if (!program->isInUse()) {
		mCurrentProgram->remove();
		program->use();
		mCurrentProgram = program;
		return false;
		}
		return true;

libs/hwui/OpenGLRenderer.h

+48 −9

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@
		#include <SkBitmap.h>
		#include <SkMatrix.h>
		#include <SkPaint.h>
		#include <SkShader.h>
		#include <SkXfermode.h>

		#include <utils/RefBase.h>
		@@ -98,7 +99,22 @@ public:
		void drawColor(int color, SkXfermode::Mode mode);
		void drawRect(float left, float top, float right, float bottom, const SkPaint* paint);

		void resetShader();
		void setupBitmapShader(SkBitmap* bitmap, SkShader::TileMode tileX, SkShader::TileMode tileY,
		SkMatrix* matrix, bool hasAlpha);

		private:
		/**
		* Type of Skia shader in use.
		*/
		enum ShaderType {
		kShaderNone,
		kShaderBitmap,
		kShaderLinearGradient,
		kShaderCircularGradient,
		kShaderSweepGradient
		};

		/**
		* Saves the current state of the renderer as a new snapshot.
		* The new snapshot is saved in mSnapshot and the previous snapshot
		@@ -216,6 +232,19 @@ private:
		float alpha, SkXfermode::Mode mode, bool blend,
		GLvoid* vertices, GLvoid* texCoords, GLvoid* indices, GLsizei elementsCount = 0);

		/**
		* Fills the specified rectangle with the currently set bitmap shader.
		*
		* @param left The left coordinate of the rectangle
		* @param top The top coordinate of the rectangle
		* @param right The right coordinate of the rectangle
		* @param bottom The bottom coordinate of the rectangle
		* @param alpha An additional translucency parameter, between 0.0f and 1.0f
		* @param mode The blending mode
		*/
		void drawBitmapShader(float left, float top, float right, float bottom, float alpha,
		SkXfermode::Mode mode);

		/**
		* Resets the texture coordinates stored in mDrawTextureVertices. Setting the values
		* back to default is achieved by calling:
		@@ -246,14 +275,16 @@ private:
		inline void chooseBlending(bool blend, SkXfermode::Mode mode, bool isPremultiplied = true);

		/**
		* Use the specified shader with the current GL context. If the shader is already
		* in use, it will not be bound again. If it is not in use, the current shader is
		* marked unused and the specified shader becomes used and becomes the new
		* current shader.
		* Use the specified program with the current GL context. If the program is already
		* in use, it will not be bound again. If it is not in use, the current program is
		* marked unused and the specified program becomes used and becomes the new
		* current program.
		*
		* @return true If the specified shader was already in use, false otherwise.
		* @param program The program to use
		*
		* @return true If the specified program was already in use, false otherwise.
		*/
		inline bool useShader(const sp<Program>& shader);
		inline bool useProgram(const sp<Program>& program);

		// Dimensions of the drawing surface
		int mWidth, mHeight;
		@@ -272,9 +303,9 @@ private:
		sp<Snapshot> mSnapshot;

		// Shaders
		sp<Program> mCurrentShader;
		sp<DrawColorProgram> mDrawColorShader;
		sp<DrawTextureProgram> mDrawTextureShader;
		sp<Program> mCurrentProgram;
		sp<DrawColorProgram> mDrawColorProgram;
		sp<DrawTextureProgram> mDrawTextureProgram;

		// Used to draw textured quads
		TextureVertex mDrawTextureVertices[4];
		@@ -284,6 +315,14 @@ private:
		GLenum mLastSrcMode;
		GLenum mLastDstMode;

		// Skia shader
		ShaderType mShader;
		bool mShaderBlend;
		SkBitmap* mShaderBitmap;
		SkShader::TileMode mShaderTileX;
		SkShader::TileMode mShaderTileY;
		SkMatrix* mShaderMatrix;

		// Various caches
		TextureCache mTextureCache;
		LayerCache mLayerCache;