| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANDROID_HWUI_OPENGL_RENDERER_H |
| #define ANDROID_HWUI_OPENGL_RENDERER_H |
| |
| #include "CanvasState.h" |
| #include "Debug.h" |
| #include "Extensions.h" |
| #include "Matrix.h" |
| #include "Program.h" |
| #include "Rect.h" |
| #include "Snapshot.h" |
| #include "UvMapper.h" |
| #include "Vertex.h" |
| #include "Caches.h" |
| #include "utils/PaintUtils.h" |
| |
| #include <GLES2/gl2.h> |
| #include <GLES2/gl2ext.h> |
| |
| #include <SkBitmap.h> |
| #include <SkCanvas.h> |
| #include <SkColorFilter.h> |
| #include <SkMatrix.h> |
| #include <SkPaint.h> |
| #include <SkRegion.h> |
| #include <SkXfermode.h> |
| |
| #include <utils/Blur.h> |
| #include <utils/Functor.h> |
| #include <utils/RefBase.h> |
| #include <utils/SortedVector.h> |
| #include <utils/Vector.h> |
| |
| #include <cutils/compiler.h> |
| |
| #include <androidfw/ResourceTypes.h> |
| |
| class SkShader; |
| |
| namespace android { |
| namespace uirenderer { |
| |
| enum class DrawOpMode { |
| kImmediate, |
| kDefer, |
| kFlush |
| }; |
| |
| class DeferredDisplayState; |
| struct Glop; |
| class RenderState; |
| class RenderNode; |
| class TextSetupFunctor; |
| class VertexBuffer; |
| |
| struct DrawModifiers { |
| DrawModifiers() |
| : mOverrideLayerAlpha(0.0f) {} |
| |
| void reset() { |
| mOverrideLayerAlpha = 0.0f; |
| } |
| |
| float mOverrideLayerAlpha; |
| }; |
| |
| enum StateDeferFlags { |
| kStateDeferFlag_Draw = 0x1, |
| kStateDeferFlag_Clip = 0x2 |
| }; |
| |
| enum ClipSideFlags { |
| kClipSide_None = 0x0, |
| kClipSide_Left = 0x1, |
| kClipSide_Top = 0x2, |
| kClipSide_Right = 0x4, |
| kClipSide_Bottom = 0x8, |
| kClipSide_Full = 0xF, |
| kClipSide_ConservativeFull = 0x1F |
| }; |
| |
| enum VertexBufferDisplayFlags { |
| kVertexBuffer_Offset = 0x1, |
| kVertexBuffer_ShadowInterp = 0x2, |
| }; |
| |
| /** |
| * Defines additional transformation that should be applied by the model view matrix, beyond that of |
| * the currentTransform() |
| */ |
| enum ModelViewMode { |
| /** |
| * Used when the model view should simply translate geometry passed to the shader. The resulting |
| * matrix will be a simple translation. |
| */ |
| kModelViewMode_Translate = 0, |
| |
| /** |
| * Used when the model view should translate and scale geometry. The resulting matrix will be a |
| * translation + scale. This is frequently used together with VBO 0, the (0,0,1,1) rect. |
| */ |
| kModelViewMode_TranslateAndScale = 1, |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Renderer |
| /////////////////////////////////////////////////////////////////////////////// |
| /** |
| * OpenGL Renderer implementation. |
| */ |
| class OpenGLRenderer : public CanvasStateClient { |
| public: |
| OpenGLRenderer(RenderState& renderState); |
| virtual ~OpenGLRenderer(); |
| |
| /** |
| * Sets the dimension of the underlying drawing surface. This method must |
| * be called at least once every time the drawing surface changes size. |
| * |
| * @param width The width in pixels of the underlysing surface |
| * @param height The height in pixels of the underlysing surface |
| */ |
| void setViewport(int width, int height) { mState.setViewport(width, height); } |
| |
| void initProperties(); |
| void initLight(const Vector3& lightCenter, float lightRadius, |
| uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha); |
| |
| /* |
| * Prepares the renderer to draw a frame. This method must be invoked |
| * at the beginning of each frame. Only the specified rectangle of the |
| * frame is assumed to be dirty. A clip will automatically be set to |
| * the specified rectangle. |
| * |
| * @param opaque If true, the target surface is considered opaque |
| * and will not be cleared. If false, the target surface |
| * will be cleared |
| */ |
| virtual void prepareDirty(float left, float top, float right, float bottom, |
| bool opaque); |
| |
| /** |
| * Prepares the renderer to draw a frame. This method must be invoked |
| * at the beginning of each frame. When this method is invoked, the |
| * entire drawing surface is assumed to be redrawn. |
| * |
| * @param opaque If true, the target surface is considered opaque |
| * and will not be cleared. If false, the target surface |
| * will be cleared |
| */ |
| void prepare(bool opaque) { |
| prepareDirty(0.0f, 0.0f, mState.getWidth(), mState.getHeight(), opaque); |
| } |
| |
| /** |
| * Indicates the end of a frame. This method must be invoked whenever |
| * the caller is done rendering a frame. |
| * Returns true if any drawing was done during the frame (the output |
| * has changed / is "dirty" and should be displayed to the user). |
| */ |
| virtual bool finish(); |
| |
| void callDrawGLFunction(Functor* functor, Rect& dirty); |
| |
| void pushLayerUpdate(Layer* layer); |
| void cancelLayerUpdate(Layer* layer); |
| void flushLayerUpdates(); |
| void markLayersAsBuildLayers(); |
| |
| virtual int saveLayer(float left, float top, float right, float bottom, |
| const SkPaint* paint, int flags) { |
| return saveLayer(left, top, right, bottom, paint, flags, nullptr); |
| } |
| |
| // Specialized saveLayer implementation, which will pass the convexMask to an FBO layer, if |
| // created, which will in turn clip to that mask when drawn back/restored. |
| int saveLayer(float left, float top, float right, float bottom, |
| const SkPaint* paint, int flags, const SkPath* convexMask); |
| |
| int saveLayerDeferred(float left, float top, float right, float bottom, |
| const SkPaint* paint, int flags); |
| |
| void drawRenderNode(RenderNode* displayList, Rect& dirty, int32_t replayFlags = 1); |
| void drawLayer(Layer* layer, float x, float y); |
| void drawBitmap(const SkBitmap* bitmap, const SkPaint* paint); |
| void drawBitmaps(const SkBitmap* bitmap, AssetAtlas::Entry* entry, int bitmapCount, |
| TextureVertex* vertices, bool pureTranslate, const Rect& bounds, const SkPaint* paint); |
| void drawBitmap(const SkBitmap* bitmap, Rect src, Rect dst, |
| const SkPaint* paint); |
| void drawBitmapMesh(const SkBitmap* bitmap, int meshWidth, int meshHeight, |
| const float* vertices, const int* colors, const SkPaint* paint); |
| void drawPatches(const SkBitmap* bitmap, AssetAtlas::Entry* entry, |
| TextureVertex* vertices, uint32_t indexCount, const SkPaint* paint); |
| void drawPatch(const SkBitmap* bitmap, const Res_png_9patch* patch, |
| float left, float top, float right, float bottom, const SkPaint* paint); |
| void drawPatch(const SkBitmap* bitmap, const Patch* mesh, AssetAtlas::Entry* entry, |
| float left, float top, float right, float bottom, const SkPaint* paint); |
| void drawColor(int color, SkXfermode::Mode mode); |
| void drawRect(float left, float top, float right, float bottom, |
| const SkPaint* paint); |
| void drawRoundRect(float left, float top, float right, float bottom, |
| float rx, float ry, const SkPaint* paint); |
| void drawCircle(float x, float y, float radius, const SkPaint* paint); |
| void drawOval(float left, float top, float right, float bottom, |
| const SkPaint* paint); |
| void drawArc(float left, float top, float right, float bottom, |
| float startAngle, float sweepAngle, bool useCenter, const SkPaint* paint); |
| void drawPath(const SkPath* path, const SkPaint* paint); |
| void drawLines(const float* points, int count, const SkPaint* paint); |
| void drawPoints(const float* points, int count, const SkPaint* paint); |
| void drawTextOnPath(const char* text, int bytesCount, int count, const SkPath* path, |
| float hOffset, float vOffset, const SkPaint* paint); |
| void drawPosText(const char* text, int bytesCount, int count, |
| const float* positions, const SkPaint* paint); |
| void drawText(const char* text, int bytesCount, int count, float x, float y, |
| const float* positions, const SkPaint* paint, float totalAdvance, const Rect& bounds, |
| DrawOpMode drawOpMode = DrawOpMode::kImmediate); |
| void drawRects(const float* rects, int count, const SkPaint* paint); |
| |
| void drawShadow(float casterAlpha, |
| const VertexBuffer* ambientShadowVertexBuffer, |
| const VertexBuffer* spotShadowVertexBuffer); |
| |
| void setDrawFilter(SkDrawFilter* filter); |
| |
| // If this value is set to < 1.0, it overrides alpha set on layer (see drawBitmap, drawLayer) |
| void setOverrideLayerAlpha(float alpha) { mDrawModifiers.mOverrideLayerAlpha = alpha; } |
| |
| /** |
| * Store the current display state (most importantly, the current clip and transform), and |
| * additionally map the state's bounds from local to window coordinates. |
| * |
| * Returns true if quick-rejected |
| */ |
| bool storeDisplayState(DeferredDisplayState& state, int stateDeferFlags); |
| void restoreDisplayState(const DeferredDisplayState& state, bool skipClipRestore = false); |
| void setupMergedMultiDraw(const Rect* clipRect); |
| |
| const DrawModifiers& getDrawModifiers() { return mDrawModifiers; } |
| void setDrawModifiers(const DrawModifiers& drawModifiers) { mDrawModifiers = drawModifiers; } |
| |
| bool isCurrentTransformSimple() { |
| return currentTransform()->isSimple(); |
| } |
| |
| Caches& getCaches() { |
| return mCaches; |
| } |
| |
| RenderState& renderState() { |
| return mRenderState; |
| } |
| |
| int getViewportWidth() { return mState.getViewportWidth(); } |
| int getViewportHeight() { return mState.getViewportHeight(); } |
| |
| /** |
| * Scales the alpha on the current snapshot. This alpha value will be modulated |
| * with other alpha values when drawing primitives. |
| */ |
| void scaleAlpha(float alpha) { mState.scaleAlpha(alpha); } |
| |
| /** |
| * Inserts a named event marker in the stream of GL commands. |
| */ |
| void eventMark(const char* name) const; |
| |
| /** |
| * Inserts a formatted event marker in the stream of GL commands. |
| */ |
| void eventMarkDEBUG(const char *fmt, ...) const; |
| |
| /** |
| * Inserts a named group marker in the stream of GL commands. This marker |
| * can be used by tools to group commands into logical groups. A call to |
| * this method must always be followed later on by a call to endMark(). |
| */ |
| void startMark(const char* name) const; |
| |
| /** |
| * Closes the last group marker opened by startMark(). |
| */ |
| void endMark() const; |
| |
| /** |
| * Gets the alpha and xfermode out of a paint object. If the paint is null |
| * alpha will be 255 and the xfermode will be SRC_OVER. This method does |
| * not multiply the paint's alpha by the current snapshot's alpha, and does |
| * not replace the alpha with the overrideLayerAlpha |
| * |
| * @param paint The paint to extract values from |
| * @param alpha Where to store the resulting alpha |
| * @param mode Where to store the resulting xfermode |
| */ |
| static inline void getAlphaAndModeDirect(const SkPaint* paint, int* alpha, |
| SkXfermode::Mode* mode) { |
| *mode = getXfermodeDirect(paint); |
| *alpha = getAlphaDirect(paint); |
| } |
| |
| static inline SkXfermode::Mode getXfermodeDirect(const SkPaint* paint) { |
| if (!paint) return SkXfermode::kSrcOver_Mode; |
| return PaintUtils::getXfermode(paint->getXfermode()); |
| } |
| |
| static inline int getAlphaDirect(const SkPaint* paint) { |
| if (!paint) return 255; |
| return paint->getAlpha(); |
| } |
| |
| struct TextShadow { |
| SkScalar radius; |
| float dx; |
| float dy; |
| SkColor color; |
| }; |
| |
| static inline bool getTextShadow(const SkPaint* paint, TextShadow* textShadow) { |
| SkDrawLooper::BlurShadowRec blur; |
| if (paint && paint->getLooper() && paint->getLooper()->asABlurShadow(&blur)) { |
| if (textShadow) { |
| textShadow->radius = Blur::convertSigmaToRadius(blur.fSigma); |
| textShadow->dx = blur.fOffset.fX; |
| textShadow->dy = blur.fOffset.fY; |
| textShadow->color = blur.fColor; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| static inline bool hasTextShadow(const SkPaint* paint) { |
| return getTextShadow(paint, nullptr); |
| } |
| |
| /** |
| * Build the best transform to use to rasterize text given a full |
| * transform matrix, and whether filteration is needed. |
| * |
| * Returns whether filtration is needed |
| */ |
| bool findBestFontTransform(const mat4& transform, SkMatrix* outMatrix) const; |
| |
| #if DEBUG_MERGE_BEHAVIOR |
| void drawScreenSpaceColorRect(float left, float top, float right, float bottom, int color) { |
| mCaches.setScissorEnabled(false); |
| |
| // should only be called outside of other draw ops, so stencil can only be in test state |
| bool stencilWasEnabled = mCaches.stencil.isTestEnabled(); |
| mCaches.stencil.disable(); |
| |
| drawColorRect(left, top, right, bottom, color, SkXfermode::kSrcOver_Mode, true); |
| |
| if (stencilWasEnabled) mCaches.stencil.enableTest(); |
| mDirty = true; |
| } |
| #endif |
| |
| const Vector3& getLightCenter() const { return mState.currentLightCenter(); } |
| float getLightRadius() const { return mLightRadius; } |
| uint8_t getAmbientShadowAlpha() const { return mAmbientShadowAlpha; } |
| uint8_t getSpotShadowAlpha() const { return mSpotShadowAlpha; } |
| |
| /////////////////////////////////////////////////////////////////// |
| /// State manipulation |
| |
| int getSaveCount() const; |
| int save(int flags); |
| void restore(); |
| void restoreToCount(int saveCount); |
| |
| void getMatrix(SkMatrix* outMatrix) const { mState.getMatrix(outMatrix); } |
| void setMatrix(const SkMatrix& matrix) { mState.setMatrix(matrix); } |
| void concatMatrix(const SkMatrix& matrix) { mState.concatMatrix(matrix); } |
| |
| void translate(float dx, float dy, float dz = 0.0f); |
| void rotate(float degrees); |
| void scale(float sx, float sy); |
| void skew(float sx, float sy); |
| |
| void setMatrix(const Matrix4& matrix); // internal only convenience method |
| void concatMatrix(const Matrix4& matrix); // internal only convenience method |
| |
| const Rect& getLocalClipBounds() const { return mState.getLocalClipBounds(); } |
| const Rect& getRenderTargetClipBounds() const { return mState.getRenderTargetClipBounds(); } |
| bool quickRejectConservative(float left, float top, |
| float right, float bottom) const { |
| return mState.quickRejectConservative(left, top, right, bottom); |
| } |
| |
| bool clipRect(float left, float top, |
| float right, float bottom, SkRegion::Op op); |
| bool clipPath(const SkPath* path, SkRegion::Op op); |
| bool clipRegion(const SkRegion* region, SkRegion::Op op); |
| |
| /** |
| * Does not support different clipping Ops (that is, every call to setClippingOutline is |
| * effectively using SkRegion::kReplaceOp) |
| * |
| * The clipping outline is independent from the regular clip. |
| */ |
| void setClippingOutline(LinearAllocator& allocator, const Outline* outline); |
| void setClippingRoundRect(LinearAllocator& allocator, |
| const Rect& rect, float radius, bool highPriority = true); |
| |
| inline bool hasRectToRectTransform() const { return mState.hasRectToRectTransform(); } |
| inline const mat4* currentTransform() const { return mState.currentTransform(); } |
| |
| /////////////////////////////////////////////////////////////////// |
| /// CanvasStateClient interface |
| |
| virtual void onViewportInitialized() override; |
| virtual void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) override; |
| virtual GLuint getTargetFbo() const override { return 0; } |
| |
| SkPath* allocPathForFrame() { |
| std::unique_ptr<SkPath> path(new SkPath()); |
| SkPath* returnPath = path.get(); |
| mTempPaths.push_back(std::move(path)); |
| return returnPath; |
| } |
| |
| protected: |
| /** |
| * Perform the setup specific to a frame. This method does not |
| * issue any OpenGL commands. |
| */ |
| void setupFrameState(float left, float top, float right, float bottom, bool opaque); |
| |
| /** |
| * Indicates the start of rendering. This method will setup the |
| * initial OpenGL state (viewport, clearing the buffer, etc.) |
| */ |
| void startFrame(); |
| |
| /** |
| * Clears the underlying surface if needed. |
| */ |
| virtual void clear(float left, float top, float right, float bottom, bool opaque); |
| |
| /** |
| * Call this method after updating a layer during a drawing pass. |
| */ |
| void resumeAfterLayer(); |
| |
| /** |
| * This method is called whenever a stencil buffer is required. Subclasses |
| * should override this method and call attachStencilBufferToLayer() on the |
| * appropriate layer(s). |
| */ |
| virtual void ensureStencilBuffer(); |
| |
| /** |
| * Obtains a stencil render buffer (allocating it if necessary) and |
| * attaches it to the specified layer. |
| */ |
| void attachStencilBufferToLayer(Layer* layer); |
| |
| /** |
| * Draw a rectangle list. Currently only used for the the stencil buffer so that the stencil |
| * will have a value of 'n' in every unclipped pixel, where 'n' is the number of rectangles |
| * in the list. |
| */ |
| void drawRectangleList(const RectangleList& rectangleList); |
| |
| bool quickRejectSetupScissor(float left, float top, float right, float bottom, |
| const SkPaint* paint = nullptr); |
| bool quickRejectSetupScissor(const Rect& bounds, const SkPaint* paint = nullptr) { |
| return quickRejectSetupScissor(bounds.left, bounds.top, |
| bounds.right, bounds.bottom, paint); |
| } |
| |
| /** |
| * Compose the layer defined in the current snapshot with the layer |
| * defined by the previous snapshot. |
| * |
| * The current snapshot *must* be a layer (flag kFlagIsLayer set.) |
| * |
| * @param curent The current snapshot containing the layer to compose |
| * @param previous The previous snapshot to compose the current layer with |
| */ |
| virtual void composeLayer(const Snapshot& current, const Snapshot& previous); |
| |
| /** |
| * Marks the specified region as dirty at the specified bounds. |
| */ |
| void dirtyLayerUnchecked(Rect& bounds, Region* region); |
| |
| /** |
| * Returns the region of the current layer. |
| */ |
| virtual Region* getRegion() const { |
| return mState.currentRegion(); |
| } |
| |
| /** |
| * Indicates whether rendering is currently targeted at a layer. |
| */ |
| virtual bool hasLayer() const { |
| return (mState.currentFlags() & Snapshot::kFlagFboTarget) && mState.currentRegion(); |
| } |
| |
| /** |
| * Renders the specified layer as a textured quad. |
| * |
| * @param layer The layer to render |
| * @param rect The bounds of the layer |
| */ |
| void drawTextureLayer(Layer* layer, const Rect& rect); |
| |
| /** |
| * Gets the alpha and xfermode out of a paint object. If the paint is null |
| * alpha will be 255 and the xfermode will be SRC_OVER. Accounts for both |
| * snapshot alpha, and overrideLayerAlpha |
| * |
| * @param paint The paint to extract values from |
| * @param alpha Where to store the resulting alpha |
| * @param mode Where to store the resulting xfermode |
| */ |
| inline void getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) const; |
| |
| /** |
| * Gets the alpha from a layer, accounting for snapshot alpha and overrideLayerAlpha |
| * |
| * @param layer The layer from which the alpha is extracted |
| */ |
| inline float getLayerAlpha(const Layer* layer) const; |
| |
| /** |
| * Safely retrieves the ColorFilter from the given Paint. If the paint is |
| * null then null is returned. |
| */ |
| static inline SkColorFilter* getColorFilter(const SkPaint* paint) { |
| return paint ? paint->getColorFilter() : nullptr; |
| } |
| |
| /** |
| * Safely retrieves the Shader from the given Paint. If the paint is |
| * null then null is returned. |
| */ |
| static inline const SkShader* getShader(const SkPaint* paint) { |
| return paint ? paint->getShader() : nullptr; |
| } |
| |
| /** |
| * Set to true to suppress error checks at the end of a frame. |
| */ |
| virtual bool suppressErrorChecks() const { |
| return false; |
| } |
| |
| CanvasState mState; |
| Caches& mCaches; |
| RenderState& mRenderState; |
| |
| private: |
| void renderGlop(const Glop& glop, bool clearLayer = true); |
| |
| /** |
| * Discards the content of the framebuffer if supported by the driver. |
| * This method should be called at the beginning of a frame to optimize |
| * rendering on some tiler architectures. |
| */ |
| void discardFramebuffer(float left, float top, float right, float bottom); |
| |
| /** |
| * Tells the GPU what part of the screen is about to be redrawn. |
| * This method will use the current layer space clip rect. |
| * This method needs to be invoked every time getTargetFbo() is |
| * bound again. |
| */ |
| void startTilingCurrentClip(bool opaque = false, bool expand = false); |
| |
| /** |
| * Tells the GPU what part of the screen is about to be redrawn. |
| * This method needs to be invoked every time getTargetFbo() is |
| * bound again. |
| */ |
| void startTiling(const Rect& clip, int windowHeight, bool opaque = false, bool expand = false); |
| |
| /** |
| * Tells the GPU that we are done drawing the frame or that we |
| * are switching to another render target. |
| */ |
| void endTiling(); |
| |
| /** |
| * Sets the clipping rectangle using glScissor. The clip is defined by |
| * the current snapshot's clipRect member. |
| */ |
| void setScissorFromClip(); |
| |
| /** |
| * Sets the clipping region using the stencil buffer. The clip region |
| * is defined by the current snapshot's clipRegion member. |
| */ |
| void setStencilFromClip(); |
| |
| /** |
| * Given the local bounds of the layer, calculates ... |
| */ |
| void calculateLayerBoundsAndClip(Rect& bounds, Rect& clip, bool fboLayer); |
| |
| /** |
| * Given the local bounds + clip of the layer, updates current snapshot's empty/invisible |
| */ |
| void updateSnapshotIgnoreForLayer(const Rect& bounds, const Rect& clip, |
| bool fboLayer, int alpha); |
| |
| /** |
| * Creates a new layer stored in the specified snapshot. |
| * |
| * @param snapshot The snapshot associated with the new layer |
| * @param left The left coordinate of the layer |
| * @param top The top coordinate of the layer |
| * @param right The right coordinate of the layer |
| * @param bottom The bottom coordinate of the layer |
| * @param alpha The translucency of the layer |
| * @param mode The blending mode of the layer |
| * @param flags The layer save flags |
| * @param mask A mask to use when drawing the layer back, may be empty |
| * |
| * @return True if the layer was successfully created, false otherwise |
| */ |
| bool createLayer(float left, float top, float right, float bottom, |
| const SkPaint* paint, int flags, const SkPath* convexMask); |
| |
| /** |
| * Creates a new layer stored in the specified snapshot as an FBO. |
| * |
| * @param layer The layer to store as an FBO |
| * @param snapshot The snapshot associated with the new layer |
| * @param bounds The bounds of the layer |
| */ |
| bool createFboLayer(Layer* layer, Rect& bounds, Rect& clip); |
| |
| /** |
| * Compose the specified layer as a region. |
| * |
| * @param layer The layer to compose |
| * @param rect The layer's bounds |
| */ |
| void composeLayerRegion(Layer* layer, const Rect& rect); |
| |
| /** |
| * Compose the specified layer as a simple rectangle. |
| * |
| * @param layer The layer to compose |
| * @param rect The layer's bounds |
| * @param swap If true, the source and destination are swapped |
| */ |
| void composeLayerRect(Layer* layer, const Rect& rect, bool swap = false); |
| |
| /** |
| * Clears all the regions corresponding to the current list of layers. |
| * This method MUST be invoked before any drawing operation. |
| */ |
| void clearLayerRegions(); |
| |
| /** |
| * Mark the layer as dirty at the specified coordinates. The coordinates |
| * are transformed with the supplied matrix. |
| */ |
| void dirtyLayer(const float left, const float top, |
| const float right, const float bottom, const Matrix4& transform); |
| |
| /** |
| * Mark the layer as dirty at the specified coordinates. |
| */ |
| void dirtyLayer(const float left, const float top, |
| const float right, const float bottom); |
| |
| /** |
| * Draws a colored rectangle with the specified color. The specified coordinates |
| * are transformed by the current snapshot's transform matrix unless specified |
| * otherwise. |
| * |
| * @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 paint The paint containing the color, blending mode, etc. |
| * @param ignoreTransform True if the current transform should be ignored |
| */ |
| void drawColorRect(float left, float top, float right, float bottom, |
| const SkPaint* paint, bool ignoreTransform = false); |
| |
| /** |
| * Draws a series of colored rectangles with the specified color. The specified |
| * coordinates are transformed by the current snapshot's transform matrix unless |
| * specified otherwise. |
| * |
| * @param rects A list of rectangles, 4 floats (left, top, right, bottom) |
| * per rectangle |
| * @param paint The paint containing the color, blending mode, etc. |
| * @param ignoreTransform True if the current transform should be ignored |
| * @param dirty True if calling this method should dirty the current layer |
| * @param clip True if the rects should be clipped, false otherwise |
| */ |
| void drawColorRects(const float* rects, int count, const SkPaint* paint, |
| bool ignoreTransform = false, bool dirty = true, bool clip = true); |
| |
| /** |
| * Draws the shape represented by the specified path texture. |
| * This method invokes drawPathTexture() but takes into account |
| * the extra left/top offset and the texture offset to correctly |
| * position the final shape. |
| * |
| * @param left The left coordinate of the shape to render |
| * @param top The top coordinate of the shape to render |
| * @param texture The texture reprsenting the shape |
| * @param paint The paint to draw the shape with |
| */ |
| void drawShape(float left, float top, PathTexture* texture, const SkPaint* paint); |
| |
| /** |
| * Draws the specified texture as an alpha bitmap. Alpha bitmaps obey |
| * different compositing rules. |
| * |
| * @param texture The texture to draw with |
| * @param paint The paint to render with |
| */ |
| void drawAlphaBitmap(Texture* texture, const SkPaint* paint); |
| |
| /** |
| * Renders a strip of polygons with the specified paint, used for tessellated geometry. |
| * |
| * @param vertexBuffer The VertexBuffer to be drawn |
| * @param paint The paint to render with |
| * @param flags flags with which to draw |
| */ |
| void drawVertexBuffer(float translateX, float translateY, const VertexBuffer& vertexBuffer, |
| const SkPaint* paint, int flags = 0); |
| |
| /** |
| * Convenience for translating method |
| */ |
| void drawVertexBuffer(const VertexBuffer& vertexBuffer, |
| const SkPaint* paint, int flags = 0) { |
| drawVertexBuffer(0.0f, 0.0f, vertexBuffer, paint, flags); |
| } |
| |
| /** |
| * Renders the convex hull defined by the specified path as a strip of polygons. |
| * |
| * @param path The hull of the path to draw |
| * @param paint The paint to render with |
| */ |
| void drawConvexPath(const SkPath& path, const SkPaint* paint); |
| |
| /** |
| * Draws a textured rectangle with the specified texture. |
| * |
| * @param texture The texture to use |
| * @param paint The paint containing the alpha, blending mode, etc. |
| */ |
| void drawTextureRect(Texture* texture, const SkPaint* paint); |
| |
| /** |
| * Draws a textured mesh with the specified texture. If the indices are omitted, |
| * the mesh is drawn as a simple quad. The mesh pointers become offsets when a |
| * VBO is bound. |
| * |
| * @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 texture The texture name to map onto the rectangle |
| * @param paint The paint containing the alpha, blending mode, colorFilter, etc. |
| * @param blend True if the texture contains an alpha channel |
| * @param vertices The vertices that define the mesh |
| * @param texCoords The texture coordinates of each vertex |
| * @param elementsCount The number of elements in the mesh, required by indices |
| * @param swapSrcDst Whether or not the src and dst blending operations should be swapped |
| * @param ignoreTransform True if the current transform should be ignored |
| * @param vbo The VBO used to draw the mesh |
| * @param modelViewMode Defines whether the model view matrix should be scaled |
| * @param dirty True if calling this method should dirty the current layer |
| */ |
| void drawTextureMesh(float left, float top, float right, float bottom, GLuint texture, |
| const SkPaint* paint, bool blend, |
| GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, |
| bool swapSrcDst = false, bool ignoreTransform = false, GLuint vbo = 0, |
| ModelViewMode modelViewMode = kModelViewMode_TranslateAndScale, bool dirty = true); |
| |
| void drawIndexedTextureMesh(float left, float top, float right, float bottom, GLuint texture, |
| const SkPaint* paint, bool blend, |
| GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, |
| bool swapSrcDst = false, bool ignoreTransform = false, GLuint vbo = 0, |
| ModelViewMode modelViewMode = kModelViewMode_TranslateAndScale, bool dirty = true); |
| |
| void drawAlpha8TextureMesh(float left, float top, float right, float bottom, |
| GLuint texture, const SkPaint* paint, |
| GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount, |
| bool ignoreTransform, ModelViewMode modelViewMode = kModelViewMode_TranslateAndScale, |
| bool dirty = true); |
| |
| /** |
| * Draws the specified list of vertices as quads using indexed GL_TRIANGLES. |
| * If the number of vertices to draw exceeds the number of indices we have |
| * pre-allocated, this method will generate several glDrawElements() calls. |
| */ |
| void issueIndexedQuadDraw(Vertex* mesh, GLsizei quadsCount); |
| |
| /** |
| * Draws text underline and strike-through if needed. |
| * |
| * @param text The text to decor |
| * @param bytesCount The number of bytes in the text |
| * @param totalAdvance The total advance in pixels, defines underline/strikethrough length |
| * @param x The x coordinate where the text will be drawn |
| * @param y The y coordinate where the text will be drawn |
| * @param paint The paint to draw the text with |
| */ |
| void drawTextDecorations(float totalAdvance, float x, float y, const SkPaint* paint); |
| |
| /** |
| * Draws shadow layer on text (with optional positions). |
| * |
| * @param paint The paint to draw the shadow with |
| * @param text The text to draw |
| * @param bytesCount The number of bytes in the text |
| * @param count The number of glyphs in the text |
| * @param positions The x, y positions of individual glyphs (or NULL) |
| * @param fontRenderer The font renderer object |
| * @param alpha The alpha value for drawing the shadow |
| * @param x The x coordinate where the shadow will be drawn |
| * @param y The y coordinate where the shadow will be drawn |
| */ |
| void drawTextShadow(const SkPaint* paint, const char* text, int bytesCount, int count, |
| const float* positions, FontRenderer& fontRenderer, int alpha, |
| float x, float y); |
| |
| /** |
| * Draws a path texture. Path textures are alpha8 bitmaps that need special |
| * compositing to apply colors/filters/etc. |
| * |
| * @param texture The texture to render |
| * @param x The x coordinate where the texture will be drawn |
| * @param y The y coordinate where the texture will be drawn |
| * @param paint The paint to draw the texture with |
| */ |
| void drawPathTexture(PathTexture* texture, float x, float y, const SkPaint* paint); |
| |
| /** |
| * Resets the texture coordinates stored in mMeshVertices. Setting the values |
| * back to default is achieved by calling: |
| * |
| * resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f); |
| * |
| * @param u1 The left coordinate of the texture |
| * @param v1 The bottom coordinate of the texture |
| * @param u2 The right coordinate of the texture |
| * @param v2 The top coordinate of the texture |
| */ |
| void resetDrawTextureTexCoords(float u1, float v1, float u2, float v2); |
| |
| /** |
| * Returns true if the specified paint will draw invisible text. |
| */ |
| bool canSkipText(const SkPaint* paint) const; |
| |
| /** |
| * Enable or disable blending as necessary. This function sets the appropriate |
| * blend function based on the specified xfermode. |
| */ |
| inline void chooseBlending(bool blend, SkXfermode::Mode mode, ProgramDescription& description, |
| bool swapSrcDst = false); |
| |
| /** |
| * Invoked before any drawing operation. This sets required state. |
| */ |
| void setupDraw(bool clear = true); |
| |
| /** |
| * Various methods to setup OpenGL rendering. |
| */ |
| void setupDrawWithTexture(bool isAlpha8 = false); |
| void setupDrawWithTextureAndColor(bool isAlpha8 = false); |
| void setupDrawWithExternalTexture(); |
| void setupDrawNoTexture(); |
| void setupDrawVertexAlpha(bool useShadowAlphaInterp); |
| void setupDrawColor(int color, int alpha); |
| void setupDrawColor(float r, float g, float b, float a); |
| void setupDrawAlpha8Color(int color, int alpha); |
| void setupDrawTextGamma(const SkPaint* paint); |
| void setupDrawShader(const SkShader* shader); |
| void setupDrawColorFilter(const SkColorFilter* filter); |
| void setupDrawBlending(const Layer* layer, bool swapSrcDst = false); |
| void setupDrawBlending(const SkPaint* paint, bool blend = true, bool swapSrcDst = false); |
| void setupDrawProgram(); |
| void setupDrawDirtyRegionsDisabled(); |
| |
| /** |
| * Setup the current program matrices based upon the nature of the geometry. |
| * |
| * @param mode If kModelViewMode_Translate, the geometry must be translated by the left and top |
| * parameters. If kModelViewMode_TranslateAndScale, the geometry that exists in the (0,0, 1,1) |
| * space must be scaled up and translated to fill the quad provided in (l,t,r,b). These |
| * transformations are stored in the modelView matrix and uploaded to the shader. |
| * |
| * @param offset Set to true if the the matrix should be fudged (translated) slightly to |
| * disambiguate geometry pixel positioning. See Vertex::GeometryFudgeFactor(). |
| * |
| * @param ignoreTransform Set to true if l,t,r,b coordinates already in layer space, |
| * currentTransform() will be ignored. (e.g. when drawing clip in layer coordinates to stencil, |
| * or when simple translation has been extracted) |
| */ |
| void setupDrawModelView(ModelViewMode mode, bool offset, |
| float left, float top, float right, float bottom, bool ignoreTransform = false); |
| void setupDrawColorUniforms(bool hasShader); |
| void setupDrawPureColorUniforms(); |
| |
| /** |
| * Setup uniforms for the current shader. |
| * |
| * @param shader SkShader on the current paint. |
| * |
| * @param ignoreTransform Set to true to ignore the transform in shader. |
| */ |
| void setupDrawShaderUniforms(const SkShader* shader, bool ignoreTransform = false); |
| void setupDrawColorFilterUniforms(const SkColorFilter* paint); |
| void setupDrawSimpleMesh(); |
| void setupDrawTexture(GLuint texture); |
| void setupDrawExternalTexture(GLuint texture); |
| void setupDrawTextureTransform(); |
| void setupDrawTextureTransformUniforms(mat4& transform); |
| void setupDrawTextGammaUniforms(); |
| void setupDrawMesh(const GLvoid* vertices, const GLvoid* texCoords = nullptr, GLuint vbo = 0); |
| void setupDrawMesh(const GLvoid* vertices, const GLvoid* texCoords, const GLvoid* colors); |
| void setupDrawMeshIndices(const GLvoid* vertices, const GLvoid* texCoords, GLuint vbo = 0); |
| void setupDrawIndexedVertices(GLvoid* vertices); |
| void accountForClear(SkXfermode::Mode mode); |
| |
| bool updateLayer(Layer* layer, bool inFrame); |
| void updateLayers(); |
| void flushLayers(); |
| |
| #if DEBUG_LAYERS_AS_REGIONS |
| /** |
| * Renders the specified region as a series of rectangles. This method |
| * is used for debugging only. |
| */ |
| void drawRegionRectsDebug(const Region& region); |
| #endif |
| |
| /** |
| * Renders the specified region as a series of rectangles. The region |
| * must be in screen-space coordinates. |
| */ |
| void drawRegionRects(const SkRegion& region, const SkPaint& paint, bool dirty = false); |
| |
| /** |
| * Draws the current clip region if any. Only when DEBUG_CLIP_REGIONS |
| * is turned on. |
| */ |
| void debugClip(); |
| |
| void debugOverdraw(bool enable, bool clear); |
| void renderOverdraw(); |
| void countOverdraw(); |
| |
| /** |
| * Should be invoked every time the glScissor is modified. |
| */ |
| inline void dirtyClip() { mState.setDirtyClip(true); } |
| |
| inline const UvMapper& getMapper(const Texture* texture) { |
| return texture && texture->uvMapper ? *texture->uvMapper : mUvMapper; |
| } |
| |
| /** |
| * Returns a texture object for the specified bitmap. The texture can |
| * come from the texture cache or an atlas. If this method returns |
| * NULL, the texture could not be found and/or allocated. |
| */ |
| Texture* getTexture(const SkBitmap* bitmap); |
| |
| bool reportAndClearDirty() { bool ret = mDirty; mDirty = false; return ret; } |
| inline Snapshot* writableSnapshot() { return mState.writableSnapshot(); } |
| inline const Snapshot* currentSnapshot() const { return mState.currentSnapshot(); } |
| |
| /** |
| * Model-view matrix used to position/size objects |
| * |
| * Stores operation-local modifications to the draw matrix that aren't incorporated into the |
| * currentTransform(). |
| * |
| * If generated with kModelViewMode_Translate, mModelViewMatrix will reflect an x/y offset, |
| * e.g. the offset in drawLayer(). If generated with kModelViewMode_TranslateAndScale, |
| * mModelViewMatrix will reflect a translation and scale, e.g. the translation and scale |
| * required to make VBO 0 (a rect of (0,0,1,1)) scaled to match the x,y offset, and width/height |
| * of a bitmap. |
| * |
| * Used as input to SkiaShader transformation. |
| */ |
| mat4 mModelViewMatrix; |
| |
| // State used to define the clipping region |
| Rect mTilingClip; |
| // Is the target render surface opaque |
| bool mOpaque; |
| // Is a frame currently being rendered |
| bool mFrameStarted; |
| |
| // Used to draw textured quads |
| TextureVertex mMeshVertices[4]; |
| |
| // Default UV mapper |
| const UvMapper mUvMapper; |
| |
| // shader, filters, and shadow |
| DrawModifiers mDrawModifiers; |
| SkPaint mFilteredPaint; |
| |
| // List of rectangles to clear after saveLayer() is invoked |
| std::vector<Rect> mLayers; |
| // List of layers to update at the beginning of a frame |
| Vector< sp<Layer> > mLayerUpdates; |
| |
| // The following fields are used to setup drawing |
| // Used to describe the shaders to generate |
| ProgramDescription mDescription; |
| // Color description |
| bool mColorSet; |
| FloatColor mColor; |
| // Indicates that the shader should get a color |
| bool mSetShaderColor; |
| // Current texture unit |
| GLuint mTextureUnit; |
| // Track dirty regions, true by default |
| bool mTrackDirtyRegions; |
| // Indicate whether we are drawing an opaque frame |
| bool mOpaqueFrame; |
| |
| // See PROPERTY_DISABLE_SCISSOR_OPTIMIZATION in |
| // Properties.h |
| bool mScissorOptimizationDisabled; |
| |
| // No-ops start/endTiling when set |
| bool mSuppressTiling; |
| bool mFirstFrameAfterResize; |
| |
| bool mSkipOutlineClip; |
| |
| // True if anything has been drawn since the last call to |
| // reportAndClearDirty() |
| bool mDirty; |
| |
| // Lighting + shadows |
| Vector3 mLightCenter; |
| float mLightRadius; |
| uint8_t mAmbientShadowAlpha; |
| uint8_t mSpotShadowAlpha; |
| |
| // Paths kept alive for the duration of the frame |
| std::vector<std::unique_ptr<SkPath>> mTempPaths; |
| |
| friend class Layer; |
| friend class TextSetupFunctor; |
| friend class DrawBitmapOp; |
| friend class DrawPatchOp; |
| |
| }; // class OpenGLRenderer |
| |
| }; // namespace uirenderer |
| }; // namespace android |
| |
| #endif // ANDROID_HWUI_OPENGL_RENDERER_H |