reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | #ifndef SkGLDevice_DEFINED |
| 2 | #define SkGLDevice_DEFINED |
| 3 | |
| 4 | #include "SkDevice.h" |
| 5 | #include "SkGL.h" |
| 6 | #include "SkRegion.h" |
| 7 | |
| 8 | struct SkGLDrawProcs; |
| 9 | |
| 10 | class SkGLDevice : public SkDevice { |
| 11 | public: |
| 12 | SkGLDevice(const SkBitmap& bitmap, bool offscreen); |
| 13 | virtual ~SkGLDevice(); |
| 14 | |
| 15 | // used to identify GLTextCache data in the glyphcache |
| 16 | static void GlyphCacheAuxProc(void* data); |
| 17 | |
| 18 | enum TexOrientation { |
| 19 | kNo_TexOrientation, |
| 20 | kTopToBottom_TexOrientation, |
| 21 | kBottomToTop_TexOrientation |
| 22 | }; |
| 23 | |
| 24 | /** Called when this device is no longer a candidate for a render target, |
| 25 | but will instead be used as a texture to be drawn. Be sure to call |
| 26 | the base impl if you override, as it will compute size and max. |
| 27 | */ |
| 28 | virtual TexOrientation bindDeviceAsTexture(); |
| 29 | |
| 30 | // returns true if complex |
| 31 | SkGLClipIter* updateMatrixClip(); |
| 32 | // call to set the clip to the specified rect |
| 33 | void scissor(const SkIRect&); |
| 34 | |
| 35 | // overrides from SkDevice |
| 36 | virtual void gainFocus(SkCanvas*); |
| 37 | virtual void setMatrixClip(const SkMatrix& matrix, const SkRegion& clip); |
| 38 | |
| 39 | virtual void drawPaint(const SkDraw&, const SkPaint& paint); |
| 40 | virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count, |
| 41 | const SkPoint[], const SkPaint& paint); |
| 42 | virtual void drawRect(const SkDraw&, const SkRect& r, |
| 43 | const SkPaint& paint); |
| 44 | virtual void drawPath(const SkDraw&, const SkPath& path, |
| 45 | const SkPaint& paint); |
| 46 | virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap, |
| 47 | const SkMatrix& matrix, const SkPaint& paint); |
| 48 | virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap, |
| 49 | int x, int y, const SkPaint& paint); |
| 50 | virtual void drawText(const SkDraw&, const void* text, size_t len, |
| 51 | SkScalar x, SkScalar y, const SkPaint& paint); |
| 52 | virtual void drawPosText(const SkDraw&, const void* text, size_t len, |
| 53 | const SkScalar pos[], SkScalar constY, |
| 54 | int scalarsPerPos, const SkPaint& paint); |
| 55 | virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len, |
| 56 | const SkPath& path, const SkMatrix* matrix, |
| 57 | const SkPaint& paint); |
| 58 | virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount, |
| 59 | const SkPoint verts[], const SkPoint texs[], |
| 60 | const SkColor colors[], SkXfermode* xmode, |
| 61 | const uint16_t indices[], int indexCount, |
| 62 | const SkPaint& paint); |
| 63 | virtual void drawDevice(const SkDraw&, SkDevice*, int x, int y, |
| 64 | const SkPaint&); |
| 65 | |
| 66 | protected: |
| 67 | /** Return the current glmatrix, from a previous call to setMatrixClip */ |
| 68 | const SkMatrix& matrix() const { return fMatrix; } |
| 69 | /** Return the current clip, from a previous call to setMatrixClip */ |
| 70 | const SkRegion& clip() const { return fClip; } |
| 71 | |
| 72 | private: |
| 73 | SkGLMatrix fGLMatrix; |
| 74 | SkMatrix fMatrix; |
| 75 | SkRegion fClip; |
| 76 | bool fDirty; |
| 77 | |
| 78 | SkGLClipIter fClipIter; |
| 79 | SkGLDrawProcs* fDrawProcs; |
| 80 | |
| 81 | void setupForText(SkDraw* draw, const SkPaint& paint); |
| 82 | |
| 83 | // global texture cache methods |
| 84 | class TexCache; |
| 85 | static TexCache* LockTexCache(const SkBitmap&, GLuint* name, |
| 86 | SkPoint* size); |
| 87 | static void UnlockTexCache(TexCache*); |
| 88 | class SkAutoLockTexCache { |
| 89 | public: |
| 90 | SkAutoLockTexCache(const SkBitmap& bitmap, GLuint* name, |
| 91 | SkPoint* size) { |
| 92 | fTex = SkGLDevice::LockTexCache(bitmap, name, size); |
| 93 | } |
| 94 | ~SkAutoLockTexCache() { |
| 95 | if (fTex) { |
| 96 | SkGLDevice::UnlockTexCache(fTex); |
| 97 | } |
| 98 | } |
| 99 | TexCache* get() const { return fTex; } |
| 100 | private: |
| 101 | TexCache* fTex; |
| 102 | }; |
| 103 | friend class SkAutoTexCache; |
| 104 | |
| 105 | // returns cache if the texture is bound for the shader |
| 106 | TexCache* setupGLPaintShader(const SkPaint& paint); |
| 107 | |
| 108 | class AutoPaintShader { |
| 109 | public: |
| 110 | AutoPaintShader(SkGLDevice*, const SkPaint& paint); |
| 111 | ~AutoPaintShader(); |
| 112 | |
| 113 | bool useTex() const { return fTexCache != 0; } |
| 114 | private: |
| 115 | SkGLDevice* fDevice; |
| 116 | TexCache* fTexCache; |
| 117 | }; |
| 118 | friend class AutoPaintShader; |
| 119 | |
| 120 | typedef SkDevice INHERITED; |
| 121 | }; |
| 122 | |
| 123 | #endif |
| 124 | |