src/gpu/gl/GrGpuGL.h - Issue 824753002: Rename GrGpuGL -> GrGLGpu

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Issue 824753002: Rename GrGpuGL -> GrGLGpu (Closed) Base URL: https://skia.googlesource.com/skia.git@master

Patch Set: Address nit Created 5 years, 12 months ago

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1 /*

2 * Copyright 2011 Google Inc.

3 *

4 * Use of this source code is governed by a BSD-style license that can be

5 * found in the LICENSE file.

6 */

7

8 #ifndef GrGpuGL_DEFINED

9 #define GrGpuGL_DEFINED

10

11 #include "GrDrawState.h"

12 #include "GrGLContext.h"

13 #include "GrGLIRect.h"

14 #include "GrGLIndexBuffer.h"

15 #include "GrGLPathRendering.h"

16 #include "GrGLProgram.h"

17 #include "GrGLRenderTarget.h"

18 #include "GrGLStencilBuffer.h"

19 #include "GrGLTexture.h"

20 #include "GrGLVertexArray.h"

21 #include "GrGLVertexBuffer.h"

22 #include "GrGpu.h"

23 #include "GrOptDrawState.h"

24 #include "GrXferProcessor.h"

25 #include "SkTypes.h"

26

27 #ifdef SK_DEVELOPER

28 #define PROGRAM_CACHE_STATS

29 #endif

30

31 class GrGLGpu : public GrGpu {

32 public:

33 GrGLGpu(const GrGLContext& ctx, GrContext* context);

34 ~GrGLGpu() SK_OVERRIDE;

35

36 void contextAbandoned() SK_OVERRIDE;

37

38 const GrGLContext& glContext() const { return fGLContext; }

39

40 const GrGLInterface* glInterface() const { return fGLContext.interface(); }

41 const GrGLContextInfo& ctxInfo() const { return fGLContext; }

42 GrGLStandard glStandard() const { return fGLContext.standard(); }

43 GrGLVersion glVersion() const { return fGLContext.version(); }

44 GrGLSLGeneration glslGeneration() const { return fGLContext.glslGeneration() ; }

45 const GrGLCaps& glCaps() const { return *fGLContext.caps(); }

46

47 GrGLPathRendering* glPathRendering() {

48 SkASSERT(glCaps().pathRenderingSupport());

49 return static_cast<GrGLPathRendering*>(pathRendering());

50 }

51

52 void discard(GrRenderTarget*) SK_OVERRIDE;

53

54 // Used by GrGLProgram and GrGLPathTexGenProgramEffects to configure OpenGL

55 // state.

56 void bindTexture(int unitIdx, const GrTextureParams& params, GrGLTexture* te xture);

57

58 // GrGpu overrides

59 GrPixelConfig preferredReadPixelsConfig(GrPixelConfig readConfig,

60 GrPixelConfig surfaceConfig) const S K_OVERRIDE;

61 GrPixelConfig preferredWritePixelsConfig(GrPixelConfig writeConfig,

62 GrPixelConfig surfaceConfig) const SK_OVERRIDE;

63 bool canWriteTexturePixels(const GrTexture*, GrPixelConfig srcConfig) const SK_OVERRIDE;

64 bool readPixelsWillPayForYFlip(GrRenderTarget* renderTarget,

65 int left, int top,

66 int width, int height,

67 GrPixelConfig config,

68 size_t rowBytes) const SK_OVERRIDE;

69 bool fullReadPixelsIsFasterThanPartial() const SK_OVERRIDE;

70

71 bool initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) SK_OV ERRIDE;

72

73 // These functions should be used to bind GL objects. They track the GL stat e and skip redundant

74 // bindings. Making the equivalent glBind calls directly will confuse the st ate tracking.

75 void bindVertexArray(GrGLuint id) {

76 fHWGeometryState.setVertexArrayID(this, id);

77 }

78 void bindIndexBufferAndDefaultVertexArray(GrGLuint id) {

79 fHWGeometryState.setIndexBufferIDOnDefaultVertexArray(this, id);

80 }

81 void bindVertexBuffer(GrGLuint id) {

82 fHWGeometryState.setVertexBufferID(this, id);

83 }

84

85 // These callbacks update state tracking when GL objects are deleted. They a re called from

86 // GrGLResource onRelease functions.

87 void notifyVertexArrayDelete(GrGLuint id) {

88 fHWGeometryState.notifyVertexArrayDelete(id);

89 }

90 void notifyVertexBufferDelete(GrGLuint id) {

91 fHWGeometryState.notifyVertexBufferDelete(id);

92 }

93 void notifyIndexBufferDelete(GrGLuint id) {

94 fHWGeometryState.notifyIndexBufferDelete(id);

95 }

96

97 bool copySurface(GrSurface* dst,

98 GrSurface* src,

99 const SkIRect& srcRect,

100 const SkIPoint& dstPoint) SK_OVERRIDE;

101

102 bool canCopySurface(const GrSurface* dst,

103 const GrSurface* src,

104 const SkIRect& srcRect,

105 const SkIPoint& dstPoint) SK_OVERRIDE;

106

107 protected:

108 void buildProgramDesc(const GrOptDrawState&,

109 const GrProgramDesc::DescInfo&,

110 GrGpu::DrawType,

111 GrProgramDesc*) SK_OVERRIDE;

112

113 private:

114 // GrGpu overrides

115 void onResetContext(uint32_t resetBits) SK_OVERRIDE;

116

117 GrTexture* onCreateTexture(const GrSurfaceDesc& desc,

118 const void* srcData,

119 size_t rowBytes) SK_OVERRIDE;

120 GrTexture* onCreateCompressedTexture(const GrSurfaceDesc& desc,

121 const void* srcData) SK_OVERRIDE;

122 GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) SK_OVERRIDE;

123 GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) SK_OVERRIDE;

124 GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) SK_OVERRIDE;

125 GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&) SK_OVERRIDE;

126 bool createStencilBufferForRenderTarget(GrRenderTarget* rt,

127 int width, int height) SK_OVERRIDE;

128 bool attachStencilBufferToRenderTarget(GrStencilBuffer* sb, GrRenderTarget* rt) SK_OVERRIDE;

129

130 void onClear(GrRenderTarget, const SkIRect rect, GrColor color,

131 bool canIgnoreRect) SK_OVERRIDE;

132

133 void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideCli p) SK_OVERRIDE;

134

135 bool onReadPixels(GrRenderTarget* target,

136 int left, int top,

137 int width, int height,

138 GrPixelConfig,

139 void* buffer,

140 size_t rowBytes) SK_OVERRIDE;

141

142 bool onWriteTexturePixels(GrTexture* texture,

143 int left, int top, int width, int height,

144 GrPixelConfig config, const void* buffer,

145 size_t rowBytes) SK_OVERRIDE;

146

147 void onResolveRenderTarget(GrRenderTarget* target) SK_OVERRIDE;

148

149 void onDraw(const GrOptDrawState&, const GrDrawTarget::DrawInfo&) SK_OVERRID E;

150 void onStencilPath(const GrPath*, const StencilPathState&) SK_OVERRIDE;

151 void onDrawPath(const GrOptDrawState&, const GrPath*, const GrStencilSetting s&) SK_OVERRIDE;

152 void onDrawPaths(const GrOptDrawState&,

153 const GrPathRange*,

154 const void* indices,

155 GrDrawTarget::PathIndexType,

156 const float transformValues[],

157 GrDrawTarget::PathTransformType,

158 int count,

159 const GrStencilSettings&) SK_OVERRIDE;

160

161 void clearStencil(GrRenderTarget*) SK_OVERRIDE;

162

163 // GrDrawTarget overrides

164 void didAddGpuTraceMarker() SK_OVERRIDE;

165 void didRemoveGpuTraceMarker() SK_OVERRIDE;

166

167 // binds texture unit in GL

168 void setTextureUnit(int unitIdx);

169

170 // Flushes state from GrOptDrawState to GL. Returns false if the state could n't be set.

171 bool flushGLState(const GrOptDrawState&);

172

173 // Sets up vertex attribute pointers and strides. On return indexOffsetInByt es gives the offset

174 // an into the index buffer. It does not account for drawInfo.startIndex() b ut rather the start

175 // index is relative to the returned offset.

176 void setupGeometry(const GrOptDrawState&,

177 const GrDrawTarget::DrawInfo& info,

178 size_t* indexOffsetInBytes);

179

180 // Subclasses should call this to flush the blend state.

181 void flushBlend(const GrXferProcessor::BlendInfo& blendInfo);

182

183 bool hasExtension(const char* ext) const { return fGLContext.hasExtension(ex t); }

184

185 static bool BlendCoeffReferencesConstant(GrBlendCoeff coeff);

186

187 class ProgramCache : public ::SkNoncopyable {

188 public:

189 ProgramCache(GrGLGpu* gpu);

190 ~ProgramCache();

191

192 void abandon();

193 GrGLProgram* getProgram(const GrOptDrawState&);

194

195 private:

196 enum {

197 // We may actually have kMaxEntries+1 shaders in the GL context beca use we create a new

198 // shader before evicting from the cache.

199 kMaxEntries = 128,

200 kHashBits = 6,

201 };

202

203 struct Entry;

204

205 struct ProgDescLess;

206

207 // binary search for entry matching desc. returns index into fEntries th at matches desc or ~

208 // of the index of where it should be inserted.

209 int search(const GrProgramDesc& desc) const;

210

211 // sorted array of all the entries

212 Entry* fEntries[kMaxEntries];

213 // hash table based on lowest kHashBits bits of the program key. Used to avoid binary

214 // searching fEntries.

215 Entry* fHashTable[1 << kHashBits];

216

217 int fCount;

218 unsigned int fCurrLRUStamp;

219 GrGLGpu* fGpu;

220 #ifdef PROGRAM_CACHE_STATS

221 int fTotalRequests;

222 int fCacheMisses;

223 int fHashMisses; // cache hit but hash table mis sed

224 #endif

225 };

226

227 void flushDither(bool dither);

228 void flushColorWrite(bool writeColor);

229 void flushDrawFace(GrDrawState::DrawFace face);

230

231 // flushes the scissor. see the note on flushBoundTextureAndParams about

232 // flushing the scissor after that function is called.

233 void flushScissor(const GrScissorState&,

234 const GrGLIRect& rtViewport,

235 GrSurfaceOrigin rtOrigin);

236

237 // disables the scissor

238 void disableScissor();

239

240 void initFSAASupport();

241

242 // determines valid stencil formats

243 void initStencilFormats();

244

245 // sets a texture unit to use for texture operations other than binding a te xture to a program.

246 // ensures that such operations don't negatively interact with tracking boun d textures.

247 void setScratchTextureUnit();

248

249 // bounds is region that may be modified and therefore has to be resolved.

250 // NULL means whole target. Can be an empty rect.

251 void flushRenderTarget(GrGLRenderTarget, const SkIRect bounds);

252

253 void flushStencil(const GrStencilSettings&);

254 void flushHWAAState(GrRenderTarget* rt, bool useHWAA, bool isLineDraw);

255

256 bool configToGLFormats(GrPixelConfig config,

257 bool getSizedInternal,

258 GrGLenum* internalFormat,

259 GrGLenum* externalFormat,

260 GrGLenum* externalType);

261 // helper for onCreateTexture and writeTexturePixels

262 bool uploadTexData(const GrSurfaceDesc& desc,

263 bool isNewTexture,

264 int left, int top, int width, int height,

265 GrPixelConfig dataConfig,

266 const void* data,

267 size_t rowBytes);

268

269 // helper for onCreateCompressedTexture. If width and height are

270 // set to -1, then this function will use desc.fWidth and desc.fHeight

271 // for the size of the data. The isNewTexture flag should be set to true

272 // whenever a new texture needs to be created. Otherwise, we assume that

273 // the texture is already in GPU memory and that it's going to be updated

274 // with new data.

275 bool uploadCompressedTexData(const GrSurfaceDesc& desc,

276 const void* data,

277 bool isNewTexture = true,

278 int left = 0, int top = 0,

279 int width = -1, int height = -1);

280

281 bool createRenderTargetObjects(const GrSurfaceDesc&, GrGLuint texID, GrGLRen derTarget::IDDesc*);

282

283 GrGLuint bindSurfaceAsFBO(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport);

284

285 GrGLContext fGLContext;

286

287 // GL program-related state

288 ProgramCache* fProgramCache;

289 SkAutoTUnref<GrGLProgram> fCurrentProgram;

290

291 ///////////////////////////////////////////////////////////////////////////

292 ///@name Caching of GL State

293 ///@{

294 int fHWActiveTextureUnitIdx;

295 GrGLuint fHWProgramID;

296

297 enum TriState {

298 kNo_TriState,

299 kYes_TriState,

300 kUnknown_TriState

301 };

302

303 // last scissor / viewport scissor state seen by the GL.

304 struct {

305 TriState fEnabled;

306 GrGLIRect fRect;

307 void invalidate() {

308 fEnabled = kUnknown_TriState;

309 fRect.invalidate();

310 }

311 } fHWScissorSettings;

312

313 GrGLIRect fHWViewport;

314

315 /**

316 * Tracks bound vertex and index buffers and vertex attrib array state.

317 */

318 class HWGeometryState {

319 public:

320 HWGeometryState() { fVBOVertexArray = NULL; this->invalidate(); }

321

322 ~HWGeometryState() { SkSafeUnref(fVBOVertexArray); }

323

324 void invalidate() {

325 fBoundVertexArrayIDIsValid = false;

326 fBoundVertexBufferIDIsValid = false;

327 fDefaultVertexArrayBoundIndexBufferID = false;

328 fDefaultVertexArrayBoundIndexBufferIDIsValid = false;

329 fDefaultVertexArrayAttribState.invalidate();

330 if (fVBOVertexArray) {

331 fVBOVertexArray->invalidateCachedState();

332 }

333 }

334

335 void notifyVertexArrayDelete(GrGLuint id) {

336 if (fBoundVertexArrayIDIsValid && fBoundVertexArrayID == id) {

337 // Does implicit bind to 0

338 fBoundVertexArrayID = 0;

339 }

340 }

341

342 void setVertexArrayID(GrGLGpu* gpu, GrGLuint arrayID) {

343 if (!gpu->glCaps().vertexArrayObjectSupport()) {

344 SkASSERT(0 == arrayID);

345 return;

346 }

347 if (!fBoundVertexArrayIDIsValid \|\| arrayID != fBoundVertexArrayID) {

348 GR_GL_CALL(gpu->glInterface(), BindVertexArray(arrayID));

349 fBoundVertexArrayIDIsValid = true;

350 fBoundVertexArrayID = arrayID;

351 }

352 }

353

354 void notifyVertexBufferDelete(GrGLuint id) {

355 if (fBoundVertexBufferIDIsValid && id == fBoundVertexBufferID) {

356 fBoundVertexBufferID = 0;

357 }

358 if (fVBOVertexArray) {

359 fVBOVertexArray->notifyVertexBufferDelete(id);

360 }

361 fDefaultVertexArrayAttribState.notifyVertexBufferDelete(id);

362 }

363

364 void notifyIndexBufferDelete(GrGLuint id) {

365 if (fDefaultVertexArrayBoundIndexBufferIDIsValid &&

366 id == fDefaultVertexArrayBoundIndexBufferID) {

367 fDefaultVertexArrayBoundIndexBufferID = 0;

368 }

369 if (fVBOVertexArray) {

370 fVBOVertexArray->notifyIndexBufferDelete(id);

371 }

372 }

373

374 void setVertexBufferID(GrGLGpu* gpu, GrGLuint id) {

375 if (!fBoundVertexBufferIDIsValid \|\| id != fBoundVertexBufferID) {

376 GR_GL_CALL(gpu->glInterface(), BindBuffer(GR_GL_ARRAY_BUFFER, id ));

377 fBoundVertexBufferIDIsValid = true;

378 fBoundVertexBufferID = id;

379 }

380 }

381

382 /**

383 * Binds the default vertex array and binds the index buffer. This is us ed when binding

384 * an index buffer in order to update it.

385 */

386 void setIndexBufferIDOnDefaultVertexArray(GrGLGpu* gpu, GrGLuint id) {

387 this->setVertexArrayID(gpu, 0);

388 if (!fDefaultVertexArrayBoundIndexBufferIDIsValid \|\|

389 id != fDefaultVertexArrayBoundIndexBufferID) {

390 GR_GL_CALL(gpu->glInterface(), BindBuffer(GR_GL_ELEMENT_ARRAY_BU FFER, id));

391 fDefaultVertexArrayBoundIndexBufferIDIsValid = true;

392 fDefaultVertexArrayBoundIndexBufferID = id;

393 }

394 }

395

396 /**

397 * Binds the vertex array object that should be used to render from the vertex buffer.

398 * The vertex array is bound and its attrib array state object is return ed. The vertex

399 * buffer is bound. The index buffer (if non-NULL) is bound to the verte x array. The

400 * returned GrGLAttribArrayState should be used to set vertex attribute arrays.

401 */

402 GrGLAttribArrayState* bindArrayAndBuffersToDraw(GrGLGpu* gpu,

403 const GrGLVertexBuffer* vbuffer,

404 const GrGLIndexBuffer* i buffer);

405

406 private:

407 GrGLuint fBoundVertexArrayID;

408 GrGLuint fBoundVertexBufferID;

409 bool fBoundVertexArrayIDIsValid;

410 bool fBoundVertexBufferIDIsValid;

411

412 GrGLuint fDefaultVertexArrayBoundIndexBufferID;

413 bool fDefaultVertexArrayBoundIndexBufferIDIsValid;

414 // We return a non-const pointer to this from bindArrayAndBuffersToDraw when vertex array 0

415 // is bound. However, this class is internal to GrGpuGL and this object never leaks out of

416 // GrGpuGL.

417 GrGLAttribArrayState fDefaultVertexArrayAttribState;

418

419 // This is used when we're using a core profile and the vertices are in a VBO.

420 GrGLVertexArray* fVBOVertexArray;

421 } fHWGeometryState;

422

423 struct {

424 GrBlendCoeff fSrcCoeff;

425 GrBlendCoeff fDstCoeff;

426 GrColor fConstColor;

427 bool fConstColorValid;

428 TriState fEnabled;

429

430 void invalidate() {

431 fSrcCoeff = kInvalid_GrBlendCoeff;

432 fDstCoeff = kInvalid_GrBlendCoeff;

433 fConstColorValid = false;

434 fEnabled = kUnknown_TriState;

435 }

436 } fHWBlendState;

437

438 TriState fMSAAEnabled;

439

440 GrStencilSettings fHWStencilSettings;

441 TriState fHWStencilTestEnabled;

442

443

444 GrDrawState::DrawFace fHWDrawFace;

445 TriState fHWWriteToColor;

446 TriState fHWDitherEnabled;

447 uint32_t fHWBoundRenderTargetUniqueID;

448 SkTArray<uint32_t, true> fHWBoundTextureUniqueIDs;

449

450 ///@}

451

452 // we record what stencil format worked last time to hopefully exit early

453 // from our loop that tries stencil formats and calls check fb status.

454 int fLastSuccessfulStencilFmtIdx;

455

456 typedef GrGpu INHERITED;

457 friend class GrGLPathRendering; // For accessing setTextureUnit.

458 };

459

460 #endif

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