epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2011 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 10 | #ifndef GrGpu_DEFINED |
| 11 | #define GrGpu_DEFINED |
| 12 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 13 | #include "GrDrawTarget.h" |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 14 | #include "GrRect.h" |
| 15 | #include "GrRefCnt.h" |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 16 | #include "GrTexture.h" |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 17 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 18 | class GrContext; |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 19 | class GrIndexBufferAllocPool; |
bsalomon@google.com | 3008519 | 2011-08-19 15:42:31 +0000 | [diff] [blame] | 20 | class GrPathRenderer; |
| 21 | class GrPathRendererChain; |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 22 | class GrResource; |
bsalomon@google.com | 81c3f8d | 2011-08-03 15:18:33 +0000 | [diff] [blame] | 23 | class GrStencilBuffer; |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 24 | class GrVertexBufferAllocPool; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 25 | |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 26 | /** |
| 27 | * Gpu usage statistics. |
| 28 | */ |
| 29 | struct GrGpuStats { |
| 30 | uint32_t fVertexCnt; //<! Number of vertices drawn |
| 31 | uint32_t fIndexCnt; //<! Number of indices drawn |
| 32 | uint32_t fDrawCnt; //<! Number of draws |
| 33 | |
| 34 | uint32_t fProgChngCnt;//<! Number of program changes (N/A for fixed) |
| 35 | |
bsalomon@google.com | 030302c | 2011-08-01 17:35:01 +0000 | [diff] [blame] | 36 | /** |
| 37 | * Number of times the texture is set in 3D API |
| 38 | */ |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 39 | uint32_t fTextureChngCnt; |
bsalomon@google.com | 030302c | 2011-08-01 17:35:01 +0000 | [diff] [blame] | 40 | /** |
| 41 | * Number of times the render target is set in 3D API |
| 42 | */ |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 43 | uint32_t fRenderTargetChngCnt; |
bsalomon@google.com | 030302c | 2011-08-01 17:35:01 +0000 | [diff] [blame] | 44 | /** |
| 45 | * Number of textures created (includes textures that are rendertargets). |
| 46 | */ |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 47 | uint32_t fTextureCreateCnt; |
bsalomon@google.com | 030302c | 2011-08-01 17:35:01 +0000 | [diff] [blame] | 48 | /** |
| 49 | * Number of rendertargets created. |
| 50 | */ |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 51 | uint32_t fRenderTargetCreateCnt; |
| 52 | }; |
| 53 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 54 | class GrGpu : public GrDrawTarget { |
| 55 | |
| 56 | public: |
bsalomon@google.com | 18c9c19 | 2011-09-22 21:01:31 +0000 | [diff] [blame] | 57 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 58 | /** |
bsalomon@google.com | 271cffc | 2011-05-20 14:13:56 +0000 | [diff] [blame] | 59 | * Additional blend coeffecients for dual source blending, not exposed |
| 60 | * through GrPaint/GrContext. |
| 61 | */ |
| 62 | enum ExtendedBlendCoeffs { |
| 63 | // source 2 refers to second output color when |
| 64 | // using dual source blending. |
| 65 | kS2C_BlendCoeff = kPublicBlendCoeffCount, |
| 66 | kIS2C_BlendCoeff, |
| 67 | kS2A_BlendCoeff, |
| 68 | kIS2A_BlendCoeff, |
| 69 | |
| 70 | kTotalBlendCoeffCount |
| 71 | }; |
| 72 | |
| 73 | /** |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 74 | * Create an instance of GrGpu that matches the specified Engine backend. |
| 75 | * If the requested engine is not supported (at compile-time or run-time) |
| 76 | * this returns NULL. |
| 77 | */ |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 78 | static GrGpu* Create(GrEngine, GrPlatform3DContext context3D); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 79 | |
| 80 | //////////////////////////////////////////////////////////////////////////// |
| 81 | |
| 82 | GrGpu(); |
| 83 | virtual ~GrGpu(); |
| 84 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 85 | // The GrContext sets itself as the owner of this Gpu object |
| 86 | void setContext(GrContext* context) { |
| 87 | GrAssert(NULL == fContext); |
| 88 | fContext = context; |
| 89 | } |
| 90 | GrContext* getContext() { return fContext; } |
| 91 | const GrContext* getContext() const { return fContext; } |
| 92 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 93 | /** |
| 94 | * The GrGpu object normally assumes that no outsider is setting state |
| 95 | * within the underlying 3D API's context/device/whatever. This call informs |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 96 | * the GrGpu that the state was modified and it shouldn't make assumptions |
| 97 | * about the state. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 98 | */ |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 99 | void markContextDirty() { fContextIsDirty = true; } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 100 | |
| 101 | void unimpl(const char[]); |
| 102 | |
| 103 | /** |
bsalomon@google.com | 0748f21 | 2011-02-01 22:56:16 +0000 | [diff] [blame] | 104 | * Creates a texture object. If desc width or height is not a power of |
| 105 | * two but underlying API requires a power of two texture then srcData |
| 106 | * will be embedded in a power of two texture. The extra width and height |
| 107 | * is filled as though srcData were rendered clamped into the texture. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 108 | * |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 109 | * If kRenderTarget_TextureFlag is specified the GrRenderTarget is |
bsalomon@google.com | 1da0746 | 2011-03-10 14:51:57 +0000 | [diff] [blame] | 110 | * accessible via GrTexture::asRenderTarget(). The texture will hold a ref |
| 111 | * on the render target until its releaseRenderTarget() is called or it is |
| 112 | * destroyed. |
| 113 | * |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 114 | * @param desc describes the texture to be created. |
| 115 | * @param srcData texel data to load texture. Begins with full-size |
| 116 | * palette data for paletted textures. Contains width* |
| 117 | * height texels. If NULL texture data is uninitialized. |
| 118 | * |
| 119 | * @return The texture object if successful, otherwise NULL. |
| 120 | */ |
bsalomon@google.com | fea37b5 | 2011-04-25 15:51:06 +0000 | [diff] [blame] | 121 | GrTexture* createTexture(const GrTextureDesc& desc, |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 122 | const void* srcData, size_t rowBytes); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 123 | |
bsalomon@google.com | 5877ffd | 2011-04-11 17:58:48 +0000 | [diff] [blame] | 124 | GrResource* createPlatformSurface(const GrPlatformSurfaceDesc& desc); |
| 125 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 126 | /** |
| 127 | * Creates a vertex buffer. |
| 128 | * |
| 129 | * @param size size in bytes of the vertex buffer |
| 130 | * @param dynamic hints whether the data will be frequently changed |
| 131 | * by either GrVertexBuffer::lock or |
| 132 | * GrVertexBuffer::updateData. |
| 133 | * |
| 134 | * @return The vertex buffer if successful, otherwise NULL. |
| 135 | */ |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 136 | GrVertexBuffer* createVertexBuffer(uint32_t size, bool dynamic); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 137 | |
| 138 | /** |
| 139 | * Creates an index buffer. |
| 140 | * |
| 141 | * @param size size in bytes of the index buffer |
| 142 | * @param dynamic hints whether the data will be frequently changed |
| 143 | * by either GrIndexBuffer::lock or |
| 144 | * GrIndexBuffer::updateData. |
| 145 | * |
| 146 | * @return The index buffer if successful, otherwise NULL. |
| 147 | */ |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 148 | GrIndexBuffer* createIndexBuffer(uint32_t size, bool dynamic); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 149 | |
| 150 | /** |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 151 | * Returns an index buffer that can be used to render quads. |
bsalomon@google.com | 86afc2a | 2011-02-16 16:12:19 +0000 | [diff] [blame] | 152 | * Six indices per quad: 0, 1, 2, 0, 2, 3, etc. |
| 153 | * The max number of quads can be queried using GrIndexBuffer::maxQuads(). |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 154 | * Draw with kTriangles_PrimitiveType |
bsalomon@google.com | 86afc2a | 2011-02-16 16:12:19 +0000 | [diff] [blame] | 155 | * @ return the quad index buffer |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 156 | */ |
bsalomon@google.com | 86afc2a | 2011-02-16 16:12:19 +0000 | [diff] [blame] | 157 | const GrIndexBuffer* getQuadIndexBuffer() const; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 158 | |
| 159 | /** |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 160 | * Returns a vertex buffer with four position-only vertices [(0,0), (1,0), |
bsalomon@google.com | 86afc2a | 2011-02-16 16:12:19 +0000 | [diff] [blame] | 161 | * (1,1), (0,1)]. |
| 162 | * @ return unit square vertex buffer |
bsalomon@google.com | 6f7fbc9 | 2011-02-01 19:12:40 +0000 | [diff] [blame] | 163 | */ |
bsalomon@google.com | 86afc2a | 2011-02-16 16:12:19 +0000 | [diff] [blame] | 164 | const GrVertexBuffer* getUnitSquareVertexBuffer() const; |
bsalomon@google.com | 6f7fbc9 | 2011-02-01 19:12:40 +0000 | [diff] [blame] | 165 | |
| 166 | /** |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 167 | * Ensures that the current render target is actually set in the |
| 168 | * underlying 3D API. Used when client wants to use 3D API to directly |
| 169 | * render to the RT. |
| 170 | */ |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 171 | void forceRenderTargetFlush(); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 172 | |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 173 | /** |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 174 | * Reads a rectangle of pixels from a render target. |
| 175 | * @param renderTarget the render target to read from. NULL means the |
| 176 | * current render target. |
| 177 | * @param left left edge of the rectangle to read (inclusive) |
| 178 | * @param top top edge of the rectangle to read (inclusive) |
| 179 | * @param width width of rectangle to read in pixels. |
| 180 | * @param height height of rectangle to read in pixels. |
| 181 | * @param config the pixel config of the destination buffer |
| 182 | * @param buffer memory to read the rectangle into. |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 183 | * @param rowBytes the number of bytes between consecutive rows. Zero |
| 184 | * means rows are tightly packed. |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 185 | * |
| 186 | * @return true if the read succeeded, false if not. The read can fail |
| 187 | * because of a unsupported pixel config or because no render |
| 188 | * target is currently set. |
| 189 | */ |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 190 | bool readPixels(GrRenderTarget* renderTarget, |
| 191 | int left, int top, int width, int height, |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 192 | GrPixelConfig config, void* buffer, size_t rowBytes); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 193 | |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 194 | const GrGpuStats& getStats() const; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 195 | void resetStats(); |
| 196 | void printStats() const; |
| 197 | |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 198 | /** |
| 199 | * Called to tell Gpu object that all GrResources have been lost and should |
bsalomon@google.com | 81c3f8d | 2011-08-03 15:18:33 +0000 | [diff] [blame] | 200 | * be abandoned. Overrides must call INHERITED::abandonResources(). |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 201 | */ |
junov@google.com | 53a5584 | 2011-06-08 22:55:10 +0000 | [diff] [blame] | 202 | virtual void abandonResources(); |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 203 | |
| 204 | /** |
bsalomon@google.com | 81c3f8d | 2011-08-03 15:18:33 +0000 | [diff] [blame] | 205 | * Called to tell Gpu object to release all GrResources. Overrides must call |
| 206 | * INHERITED::releaseResources(). |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 207 | */ |
| 208 | void releaseResources(); |
| 209 | |
| 210 | /** |
| 211 | * Add resource to list of resources. Should only be called by GrResource. |
| 212 | * @param resource the resource to add. |
| 213 | */ |
| 214 | void insertResource(GrResource* resource); |
| 215 | |
| 216 | /** |
| 217 | * Remove resource from list of resources. Should only be called by |
| 218 | * GrResource. |
| 219 | * @param resource the resource to remove. |
| 220 | */ |
| 221 | void removeResource(GrResource* resource); |
| 222 | |
bsalomon@google.com | 471d471 | 2011-08-23 15:45:25 +0000 | [diff] [blame] | 223 | // GrDrawTarget overrides |
bsalomon@google.com | 18c9c19 | 2011-09-22 21:01:31 +0000 | [diff] [blame] | 224 | virtual void clear(const GrIRect* rect, GrColor color); |
bsalomon@google.com | 471d471 | 2011-08-23 15:45:25 +0000 | [diff] [blame] | 225 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 226 | protected: |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 227 | enum PrivateStateBits { |
| 228 | kFirstBit = (kLastPublicStateBit << 1), |
| 229 | |
| 230 | kModifyStencilClip_StateBit = kFirstBit, // allows draws to modify |
| 231 | // stencil bits used for |
| 232 | // clipping. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 233 | }; |
| 234 | |
bsalomon@google.com | dea2f8d | 2011-08-01 15:51:05 +0000 | [diff] [blame] | 235 | // keep track of whether we are using stencil clipping (as opposed to |
| 236 | // scissor). |
| 237 | bool fClipInStencil; |
bsalomon@google.com | 86afc2a | 2011-02-16 16:12:19 +0000 | [diff] [blame] | 238 | |
| 239 | // prepares clip flushes gpu state before a draw |
bsalomon@google.com | ffca400 | 2011-02-22 20:34:01 +0000 | [diff] [blame] | 240 | bool setupClipAndFlushState(GrPrimitiveType type); |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 241 | |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 242 | // Functions used to map clip-respecting stencil tests into normal |
| 243 | // stencil funcs supported by GPUs. |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 244 | static GrStencilFunc ConvertStencilFunc(bool stencilInClip, |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 245 | GrStencilFunc func); |
| 246 | static void ConvertStencilFuncAndMask(GrStencilFunc func, |
| 247 | bool clipInStencil, |
| 248 | unsigned int clipBit, |
| 249 | unsigned int userBits, |
| 250 | unsigned int* ref, |
| 251 | unsigned int* mask); |
| 252 | |
| 253 | // stencil settings to clip drawing when stencil clipping is in effect |
| 254 | // and the client isn't using the stencil test. |
| 255 | static const GrStencilSettings gClipStencilSettings; |
| 256 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 257 | |
bsalomon@google.com | 05ef510 | 2011-05-02 21:14:59 +0000 | [diff] [blame] | 258 | GrGpuStats fStats; |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 259 | |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 260 | struct GeometryPoolState { |
| 261 | const GrVertexBuffer* fPoolVertexBuffer; |
| 262 | int fPoolStartVertex; |
| 263 | |
| 264 | const GrIndexBuffer* fPoolIndexBuffer; |
| 265 | int fPoolStartIndex; |
| 266 | }; |
| 267 | const GeometryPoolState& getGeomPoolState() { |
| 268 | return fGeomPoolStateStack.back(); |
| 269 | } |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 270 | |
| 271 | // GrDrawTarget overrides |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 272 | virtual bool onReserveVertexSpace(GrVertexLayout vertexLayout, |
| 273 | int vertexCount, |
| 274 | void** vertices); |
| 275 | virtual bool onReserveIndexSpace(int indexCount, void** indices); |
| 276 | virtual void releaseReservedVertexSpace(); |
| 277 | virtual void releaseReservedIndexSpace(); |
bsalomon@google.com | bcdbbe6 | 2011-04-12 15:40:00 +0000 | [diff] [blame] | 278 | virtual void onSetVertexSourceToArray(const void* vertexArray, |
| 279 | int vertexCount); |
bsalomon@google.com | bcdbbe6 | 2011-04-12 15:40:00 +0000 | [diff] [blame] | 280 | virtual void onSetIndexSourceToArray(const void* indexArray, |
| 281 | int indexCount); |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 282 | virtual void releaseVertexArray(); |
| 283 | virtual void releaseIndexArray(); |
| 284 | virtual void geometrySourceWillPush(); |
| 285 | virtual void geometrySourceWillPop(const GeometrySrcState& restoredState); |
| 286 | |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 287 | // Helpers for setting up geometry state |
| 288 | void finalizeReservedVertices(); |
| 289 | void finalizeReservedIndices(); |
| 290 | |
bsalomon@google.com | b635d39 | 2011-11-05 12:47:43 +0000 | [diff] [blame^] | 291 | // at 10 resets / frame and 60fps a 64bit timestamp will overflow in about |
| 292 | // a billion years. |
| 293 | typedef uint64_t ResetContextTimestamp; |
bsalomon@google.com | 1bf1c21 | 2011-11-05 12:18:58 +0000 | [diff] [blame] | 294 | |
bsalomon@google.com | b635d39 | 2011-11-05 12:47:43 +0000 | [diff] [blame^] | 295 | // called when the 3D context state is unknown. Subclass should emit any |
| 296 | // assumed 3D context state and dirty any state cache |
bsalomon@google.com | 1bf1c21 | 2011-11-05 12:18:58 +0000 | [diff] [blame] | 297 | virtual void onResetContext() = 0; |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 298 | |
bsalomon@google.com | b635d39 | 2011-11-05 12:47:43 +0000 | [diff] [blame^] | 299 | // returns the number of times the context was reset. This timestamp can be |
| 300 | // used to lazily detect when cached 3D context state is dirty. |
| 301 | ResetContextTimestamp resetContextTimestamp() const { |
| 302 | return fResetTimestamp; |
| 303 | } |
| 304 | |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 305 | // overridden by API-specific derived class to create objects. |
bsalomon@google.com | fea37b5 | 2011-04-25 15:51:06 +0000 | [diff] [blame] | 306 | virtual GrTexture* onCreateTexture(const GrTextureDesc& desc, |
bsalomon@google.com | bcdbbe6 | 2011-04-12 15:40:00 +0000 | [diff] [blame] | 307 | const void* srcData, |
| 308 | size_t rowBytes) = 0; |
bsalomon@google.com | 5877ffd | 2011-04-11 17:58:48 +0000 | [diff] [blame] | 309 | virtual GrResource* onCreatePlatformSurface(const GrPlatformSurfaceDesc& desc) = 0; |
bsalomon@google.com | bcdbbe6 | 2011-04-12 15:40:00 +0000 | [diff] [blame] | 310 | virtual GrVertexBuffer* onCreateVertexBuffer(uint32_t size, |
| 311 | bool dynamic) = 0; |
| 312 | virtual GrIndexBuffer* onCreateIndexBuffer(uint32_t size, |
| 313 | bool dynamic) = 0; |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 314 | |
bsalomon@google.com | 6aa25c3 | 2011-04-27 19:55:29 +0000 | [diff] [blame] | 315 | // overridden by API-specific derivated class to perform the clear and |
| 316 | // clearRect. NULL rect means clear whole target. |
| 317 | virtual void onClear(const GrIRect* rect, GrColor color) = 0; |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 318 | |
| 319 | // overridden by API-specific derived class to perform the draw call. |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 320 | virtual void onGpuDrawIndexed(GrPrimitiveType type, |
| 321 | uint32_t startVertex, |
| 322 | uint32_t startIndex, |
bsalomon@google.com | bcdbbe6 | 2011-04-12 15:40:00 +0000 | [diff] [blame] | 323 | uint32_t vertexCount, |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 324 | uint32_t indexCount) = 0; |
| 325 | |
| 326 | virtual void onGpuDrawNonIndexed(GrPrimitiveType type, |
| 327 | uint32_t vertexCount, |
| 328 | uint32_t numVertices) = 0; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 329 | |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 330 | // overridden by API-specific derived class to perform flush |
bsalomon@google.com | bcdbbe6 | 2011-04-12 15:40:00 +0000 | [diff] [blame] | 331 | virtual void onForceRenderTargetFlush() = 0; |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 332 | |
| 333 | // overridden by API-specific derived class to perform the read pixels. |
bsalomon@google.com | 5877ffd | 2011-04-11 17:58:48 +0000 | [diff] [blame] | 334 | virtual bool onReadPixels(GrRenderTarget* target, |
| 335 | int left, int top, int width, int height, |
bsalomon@google.com | c698097 | 2011-11-02 19:57:21 +0000 | [diff] [blame] | 336 | GrPixelConfig, void* buffer, size_t rowBytes) = 0; |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 337 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 338 | // called to program the vertex data, indexCount will be 0 if drawing non- |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 339 | // indexed geometry. The subclass may adjust the startVertex and/or |
| 340 | // startIndex since it may have already accounted for these in the setup. |
| 341 | virtual void setupGeometry(int* startVertex, |
| 342 | int* startIndex, |
| 343 | int vertexCount, |
| 344 | int indexCount) = 0; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 345 | |
bsalomon@google.com | 81c3f8d | 2011-08-03 15:18:33 +0000 | [diff] [blame] | 346 | // width and height may be larger than rt (if underlying API allows it). |
| 347 | // Should attach the SB to the RT. Returns false if compatible sb could |
| 348 | // not be created. |
| 349 | virtual bool createStencilBufferForRenderTarget(GrRenderTarget* rt, |
| 350 | int width, |
| 351 | int height) = 0; |
| 352 | |
| 353 | // attaches an existing SB to an existing RT. |
| 354 | virtual bool attachStencilBufferToRenderTarget(GrStencilBuffer* sb, |
| 355 | GrRenderTarget* rt) = 0; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 356 | |
| 357 | // The GrGpu typically records the clients requested state and then flushes |
| 358 | // deltas from previous state at draw time. This function does the |
| 359 | // API-specific flush of the state |
| 360 | // returns false if current state is unsupported. |
bsalomon@google.com | ffca400 | 2011-02-22 20:34:01 +0000 | [diff] [blame] | 361 | virtual bool flushGraphicsState(GrPrimitiveType type) = 0; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 362 | |
| 363 | // Sets the scissor rect, or disables if rect is NULL. |
| 364 | virtual void flushScissor(const GrIRect* rect) = 0; |
| 365 | |
bsalomon@google.com | ab3dee5 | 2011-08-29 15:18:41 +0000 | [diff] [blame] | 366 | // GrGpu subclass sets clip bit in the stencil buffer. The subclass is |
| 367 | // free to clear the remaining bits to zero if masked clears are more |
| 368 | // expensive than clearing all bits. |
| 369 | virtual void clearStencilClip(const GrIRect& rect, bool insideClip) = 0; |
| 370 | |
bsalomon@google.com | edc177d | 2011-08-05 15:46:40 +0000 | [diff] [blame] | 371 | // clears the entire stencil buffer to 0 |
| 372 | virtual void clearStencil() = 0; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 373 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 374 | private: |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 375 | GrContext* fContext; // not reffed (context refs gpu) |
bsalomon@google.com | 1bf1c21 | 2011-11-05 12:18:58 +0000 | [diff] [blame] | 376 | |
bsalomon@google.com | b635d39 | 2011-11-05 12:47:43 +0000 | [diff] [blame^] | 377 | ResetContextTimestamp fResetTimestamp; |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 378 | |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 379 | GrVertexBufferAllocPool* fVertexPool; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 380 | |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 381 | GrIndexBufferAllocPool* fIndexPool; |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 382 | |
| 383 | // counts number of uses of vertex/index pool in the geometry stack |
| 384 | int fVertexPoolUseCnt; |
| 385 | int fIndexPoolUseCnt; |
| 386 | |
| 387 | enum { |
| 388 | kPreallocGeomPoolStateStackCnt = 4, |
| 389 | }; |
bsalomon@google.com | 9266901 | 2011-09-27 19:10:05 +0000 | [diff] [blame] | 390 | SkSTArray<kPreallocGeomPoolStateStackCnt, |
| 391 | GeometryPoolState, true> fGeomPoolStateStack; |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 392 | |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 393 | mutable GrIndexBuffer* fQuadIndexBuffer; // mutable so it can be |
| 394 | // created on-demand |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 395 | |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 396 | mutable GrVertexBuffer* fUnitSquareVertexBuffer; // mutable so it can be |
| 397 | // created on-demand |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 398 | |
bsalomon@google.com | 3008519 | 2011-08-19 15:42:31 +0000 | [diff] [blame] | 399 | // must be instantiated after GrGpu object has been given its owning |
| 400 | // GrContext ptr. (GrGpu is constructed first then handed off to GrContext). |
| 401 | GrPathRendererChain* fPathRendererChain; |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 402 | |
bsalomon@google.com | a7f84e1 | 2011-03-10 14:13:19 +0000 | [diff] [blame] | 403 | bool fContextIsDirty; |
| 404 | |
bsalomon@google.com | 8fe7247 | 2011-03-30 21:26:44 +0000 | [diff] [blame] | 405 | GrResource* fResourceHead; |
| 406 | |
bsalomon@google.com | 81c3f8d | 2011-08-03 15:18:33 +0000 | [diff] [blame] | 407 | // Given a rt, find or create a stencil buffer and attach it |
| 408 | bool attachStencilBufferToRenderTarget(GrRenderTarget* target); |
| 409 | |
bsalomon@google.com | 25fb21f | 2011-06-21 18:17:25 +0000 | [diff] [blame] | 410 | // GrDrawTarget overrides |
| 411 | virtual void onDrawIndexed(GrPrimitiveType type, |
| 412 | int startVertex, |
| 413 | int startIndex, |
| 414 | int vertexCount, |
| 415 | int indexCount); |
| 416 | virtual void onDrawNonIndexed(GrPrimitiveType type, |
| 417 | int startVertex, |
| 418 | int vertexCount); |
| 419 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 420 | // readies the pools to provide vertex/index data. |
| 421 | void prepareVertexPool(); |
| 422 | void prepareIndexPool(); |
| 423 | |
| 424 | // determines the path renderer used to draw a clip path element. |
reed@google.com | 07f3ee1 | 2011-05-16 17:21:57 +0000 | [diff] [blame] | 425 | GrPathRenderer* getClipPathRenderer(const SkPath& path, GrPathFill fill); |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 426 | |
bsalomon@google.com | b635d39 | 2011-11-05 12:47:43 +0000 | [diff] [blame^] | 427 | void resetContext() { |
| 428 | this->onResetContext(); |
| 429 | ++fResetTimestamp; |
| 430 | } |
| 431 | |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 432 | void handleDirtyContext() { |
| 433 | if (fContextIsDirty) { |
| 434 | this->resetContext(); |
| 435 | fContextIsDirty = false; |
| 436 | } |
| 437 | } |
| 438 | |
bsalomon@google.com | 1c13c96 | 2011-02-14 16:51:21 +0000 | [diff] [blame] | 439 | typedef GrDrawTarget INHERITED; |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 440 | }; |
| 441 | |
| 442 | #endif |