| /* |
| * 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 <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 <SkShader.h> |
| #include <SkXfermode.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> |
| |
| #include "Debug.h" |
| #include "Extensions.h" |
| #include "Matrix.h" |
| #include "Program.h" |
| #include "Rect.h" |
| #include "Renderer.h" |
| #include "StatefulBaseRenderer.h" |
| #include "Snapshot.h" |
| #include "UvMapper.h" |
| #include "Vertex.h" |
| #include "Caches.h" |
| |
| namespace android { |
| namespace uirenderer { |
| |
| class DeferredDisplayState; |
| class DisplayList; |
| class TextSetupFunctor; |
| class VertexBuffer; |
| class SkiaShader; |
| |
| struct DrawModifiers { |
| DrawModifiers() { |
| reset(); |
| } |
| |
| void reset() { |
| memset(this, 0, sizeof(DrawModifiers)); |
| } |
| |
| SkiaShader* mShader; |
| float mOverrideLayerAlpha; |
| |
| // Drop shadow |
| bool mHasShadow; |
| float mShadowRadius; |
| float mShadowDx; |
| float mShadowDy; |
| int mShadowColor; |
| |
| // Draw filters |
| bool mHasDrawFilter; |
| int mPaintFilterClearBits; |
| int mPaintFilterSetBits; |
| }; |
| |
| 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 |
| }; |
| |
| /** |
| * 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, |
| }; |
| |
| enum VertexBufferMode { |
| kVertexBufferMode_Standard = 0, |
| kVertexBufferMode_Shadow = 1 |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Renderer |
| /////////////////////////////////////////////////////////////////////////////// |
| /** |
| * OpenGL Renderer implementation. |
| */ |
| class OpenGLRenderer : public StatefulBaseRenderer { |
| public: |
| ANDROID_API OpenGLRenderer(); |
| virtual ~OpenGLRenderer(); |
| |
| ANDROID_API void initProperties(); |
| |
| virtual void setViewport(int width, int height); |
| virtual status_t prepareDirty(float left, float top, float right, float bottom, bool opaque); |
| virtual void finish(); |
| virtual void interrupt(); |
| virtual void resume(); |
| |
| ANDROID_API void setCountOverdrawEnabled(bool enabled) { |
| mCountOverdraw = enabled; |
| } |
| |
| ANDROID_API float getOverdraw() { |
| return mCountOverdraw ? mOverdraw : 0.0f; |
| } |
| |
| ANDROID_API status_t invokeFunctors(Rect& dirty); |
| ANDROID_API void detachFunctor(Functor* functor); |
| ANDROID_API void attachFunctor(Functor* functor); |
| virtual status_t callDrawGLFunction(Functor* functor, Rect& dirty); |
| |
| ANDROID_API void pushLayerUpdate(Layer* layer); |
| ANDROID_API void cancelLayerUpdate(Layer* layer); |
| ANDROID_API void clearLayerUpdates(); |
| ANDROID_API void flushLayerUpdates(); |
| |
| ANDROID_API virtual int saveLayer(float left, float top, float right, float bottom, |
| const SkPaint* paint, int flags); |
| |
| int saveLayerDeferred(float left, float top, float right, float bottom, |
| const SkPaint* paint, int flags); |
| |
| virtual status_t drawDisplayList(DisplayList* displayList, Rect& dirty, int32_t replayFlags = 1); |
| virtual status_t drawLayer(Layer* layer, float x, float y); |
| virtual status_t drawBitmap(const SkBitmap* bitmap, float left, float top, |
| const SkPaint* paint); |
| status_t drawBitmaps(const SkBitmap* bitmap, AssetAtlas::Entry* entry, int bitmapCount, |
| TextureVertex* vertices, bool pureTranslate, const Rect& bounds, const SkPaint* paint); |
| virtual status_t drawBitmap(const SkBitmap* bitmap, const SkMatrix* matrix, |
| const SkPaint* paint); |
| virtual status_t drawBitmap(const SkBitmap* bitmap, float srcLeft, float srcTop, |
| float srcRight, float srcBottom, float dstLeft, float dstTop, |
| float dstRight, float dstBottom, const SkPaint* paint); |
| virtual status_t drawBitmapData(const SkBitmap* bitmap, float left, float top, |
| const SkPaint* paint); |
| virtual status_t drawBitmapMesh(const SkBitmap* bitmap, int meshWidth, int meshHeight, |
| const float* vertices, const int* colors, const SkPaint* paint); |
| status_t drawPatches(const SkBitmap* bitmap, AssetAtlas::Entry* entry, |
| TextureVertex* vertices, uint32_t indexCount, const SkPaint* paint); |
| virtual status_t drawPatch(const SkBitmap* bitmap, const Res_png_9patch* patch, |
| float left, float top, float right, float bottom, const SkPaint* paint); |
| status_t drawPatch(const SkBitmap* bitmap, const Patch* mesh, AssetAtlas::Entry* entry, |
| float left, float top, float right, float bottom, const SkPaint* paint); |
| virtual status_t drawColor(int color, SkXfermode::Mode mode); |
| virtual status_t drawRect(float left, float top, float right, float bottom, |
| const SkPaint* paint); |
| virtual status_t drawRoundRect(float left, float top, float right, float bottom, |
| float rx, float ry, const SkPaint* paint); |
| virtual status_t drawCircle(float x, float y, float radius, const SkPaint* paint); |
| virtual status_t drawOval(float left, float top, float right, float bottom, |
| const SkPaint* paint); |
| virtual status_t drawArc(float left, float top, float right, float bottom, |
| float startAngle, float sweepAngle, bool useCenter, const SkPaint* paint); |
| virtual status_t drawPath(const SkPath* path, const SkPaint* paint); |
| virtual status_t drawLines(const float* points, int count, const SkPaint* paint); |
| virtual status_t drawPoints(const float* points, int count, const SkPaint* paint); |
| virtual status_t drawTextOnPath(const char* text, int bytesCount, int count, const SkPath* path, |
| float hOffset, float vOffset, const SkPaint* paint); |
| virtual status_t drawPosText(const char* text, int bytesCount, int count, |
| const float* positions, const SkPaint* paint); |
| virtual status_t 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 = kDrawOpMode_Immediate); |
| virtual status_t drawRects(const float* rects, int count, const SkPaint* paint); |
| |
| status_t drawShadow(const mat4& casterTransform, float casterAlpha, |
| const SkPath* casterOutline); |
| |
| virtual void resetShader(); |
| virtual void setupShader(SkiaShader* shader); |
| |
| virtual void resetShadow(); |
| virtual void setupShadow(float radius, float dx, float dy, int color); |
| |
| virtual void resetPaintFilter(); |
| virtual void setupPaintFilter(int clearBits, int setBits); |
| |
| // If this value is set to < 1.0, it overrides alpha set on layer (see drawBitmap, drawLayer) |
| void setOverrideLayerAlpha(float alpha) { mDrawModifiers.mOverrideLayerAlpha = alpha; } |
| |
| const SkPaint* filterPaint(const SkPaint* paint); |
| |
| /** |
| * 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; } |
| |
| ANDROID_API bool isCurrentTransformSimple() { |
| return currentTransform()->isSimple(); |
| } |
| |
| Caches& getCaches() { |
| return mCaches; |
| } |
| |
| // simple rect clip |
| bool isCurrentClipSimple() { |
| return mSnapshot->clipRegion->isEmpty(); |
| } |
| |
| int getViewportWidth() { return currentSnapshot()->viewport.getWidth(); } |
| int getViewportHeight() { return currentSnapshot()->viewport.getHeight(); } |
| |
| /** |
| * Scales the alpha on the current snapshot. This alpha value will be modulated |
| * with other alpha values when drawing primitives. |
| */ |
| void scaleAlpha(float alpha) { |
| mSnapshot->alpha *= alpha; |
| } |
| |
| /** |
| * Inserts a named event marker in the stream of GL commands. |
| */ |
| void eventMark(const char* name) 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 getXfermode(paint->getXfermode()); |
| } |
| |
| static inline int getAlphaDirect(const SkPaint* paint) { |
| if (!paint) return 255; |
| return paint->getAlpha(); |
| } |
| |
| /** |
| * Return the best transform to use to rasterize text given a full |
| * transform matrix. |
| */ |
| mat4 findBestFontTransform(const mat4& transform) 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(); |
| } |
| #endif |
| |
| protected: |
| /** |
| * Computes the projection matrix, initialize the first snapshot |
| * and stores the dimensions of the render target. |
| */ |
| void initViewport(int width, int height); |
| |
| /** |
| * 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.) |
| */ |
| status_t startFrame(); |
| |
| /** |
| * Clears the underlying surface if needed. |
| */ |
| virtual status_t 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); |
| |
| bool quickRejectSetupScissor(float left, float top, float right, float bottom, |
| const SkPaint* paint = NULL); |
| bool quickRejectSetupScissor(const Rect& bounds, const SkPaint* paint = NULL) { |
| 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 mSnapshot->region; |
| } |
| |
| /** |
| * Indicates whether rendering is currently targeted at a layer. |
| */ |
| virtual bool hasLayer() const { |
| return (mSnapshot->flags & Snapshot::kFlagFboTarget) && mSnapshot->region; |
| } |
| |
| /** |
| * Returns the name of the FBO this renderer is rendering into. |
| */ |
| virtual GLuint getTargetFbo() const { |
| return 0; |
| } |
| |
| /** |
| * 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() : NULL; |
| } |
| |
| /** |
| * Set to true to suppress error checks at the end of a frame. |
| */ |
| virtual bool suppressErrorChecks() const { |
| return false; |
| } |
| |
| private: |
| /** |
| * 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); |
| |
| /** |
| * Ensures the state of the renderer is the same as the state of |
| * the GL context. |
| */ |
| void syncState(); |
| |
| /** |
| * 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); |
| |
| /** |
| * 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); |
| |
| /** |
| * Tells the GPU that we are done drawing the frame or that we |
| * are switching to another render target. |
| */ |
| void endTiling(); |
| |
| void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored); |
| |
| /** |
| * 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 |
| * |
| * @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); |
| |
| /** |
| * 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 mat4 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 |
| */ |
| status_t 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 |
| */ |
| status_t drawShape(float left, float top, const 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 left The x coordinate of the bitmap |
| * @param top The y coordinate of the bitmap |
| * @param paint The paint to render with |
| */ |
| void drawAlphaBitmap(Texture* texture, float left, float top, 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 useOffset Offset the vertexBuffer (used in drawing non-AA lines) |
| */ |
| status_t drawVertexBuffer(VertexBufferMode mode, const VertexBuffer& vertexBuffer, |
| const SkPaint* paint, bool useOffset = false); |
| |
| /** |
| * 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 |
| */ |
| status_t drawConvexPath(const SkPath& path, const SkPaint* paint); |
| |
| /** |
| * Draws a textured rectangle with the specified texture. The specified coordinates |
| * are transformed by the current snapshot's transform matrix. |
| * |
| * @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 to use |
| * @param paint The paint containing the alpha, blending mode, etc. |
| */ |
| void drawTextureRect(float left, float top, float right, float bottom, |
| 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(const 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; |
| |
| /** |
| * Binds the specified texture. The texture unit must have been selected |
| * prior to calling this method. |
| */ |
| inline void bindTexture(GLuint texture) { |
| mCaches.bindTexture(texture); |
| } |
| |
| /** |
| * Binds the specified EGLImage texture. The texture unit must have been selected |
| * prior to calling this method. |
| */ |
| inline void bindExternalTexture(GLuint texture) { |
| mCaches.bindTexture(GL_TEXTURE_EXTERNAL_OES, texture); |
| } |
| |
| /** |
| * 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); |
| |
| /** |
| * 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. |
| * |
| * @param program The program to use |
| * |
| * @return true If the specified program was already in use, false otherwise. |
| */ |
| inline bool useProgram(Program* program); |
| |
| /** |
| * 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 setupDrawAA(); |
| 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(); |
| 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(); |
| void setupDrawPureColorUniforms(); |
| void setupDrawShaderUniforms(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 = NULL, 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() { |
| mDirtyClip = 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); |
| |
| // Matrix used for view/projection in shaders |
| mat4 mViewProjMatrix; |
| |
| /** |
| * 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, the mModelView will reflect an x/y offset, |
| * e.g. the offset in drawLayer(). If generated with kModelViewMode_TranslateAndScale, |
| * mModelView 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 mModelView; |
| |
| // 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; |
| |
| // Various caches |
| Caches& mCaches; |
| Extensions& mExtensions; |
| |
| // List of rectangles to clear after saveLayer() is invoked |
| Vector<Rect*> mLayers; |
| // List of functors to invoke after a frame is drawn |
| SortedVector<Functor*> mFunctors; |
| // List of layers to update at the beginning of a frame |
| Vector<Layer*> mLayerUpdates; |
| |
| // The following fields are used to setup drawing |
| // Used to describe the shaders to generate |
| ProgramDescription mDescription; |
| // Color description |
| bool mColorSet; |
| float mColorA, mColorR, mColorG, mColorB; |
| // 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; |
| |
| // If true, this renderer will setup drawing to emulate |
| // an increment stencil buffer in the color buffer |
| bool mCountOverdraw; |
| float mOverdraw; |
| |
| friend class DisplayListRenderer; |
| friend class Layer; |
| friend class TextSetupFunctor; |
| friend class DrawBitmapOp; |
| friend class DrawPatchOp; |
| |
| }; // class OpenGLRenderer |
| |
| }; // namespace uirenderer |
| }; // namespace android |
| |
| #endif // ANDROID_HWUI_OPENGL_RENDERER_H |