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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 | 8 |
9 #include "GrGLCaps.h" | 9 #include "GrGLCaps.h" |
10 #include "GrGLContext.h" | 10 #include "GrGLContext.h" |
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362 } | 362 } |
363 | 363 |
364 if (GrGLCaps::kES_IMG_MsToTexture_MSFBOType == fMSFBOType) { | 364 if (GrGLCaps::kES_IMG_MsToTexture_MSFBOType == fMSFBOType) { |
365 GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES_IMG, &fMaxSampleCount); | 365 GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES_IMG, &fMaxSampleCount); |
366 } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { | 366 } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) { |
367 GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxSampleCount); | 367 GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxSampleCount); |
368 } | 368 } |
369 | 369 |
370 this->initConfigRenderableTable(ctxInfo); | 370 this->initConfigRenderableTable(ctxInfo); |
371 | 371 |
| 372 this->initCompressedTextureSupport(ctxInfo); |
| 373 |
372 return true; | 374 return true; |
373 } | 375 } |
374 | 376 |
375 void GrGLCaps::initConfigRenderableTable(const GrGLContextInfo& ctxInfo) { | 377 void GrGLCaps::initConfigRenderableTable(const GrGLContextInfo& ctxInfo) { |
376 | 378 |
377 // OpenGL < 3.0 | 379 // OpenGL < 3.0 |
378 // no support for render targets unless the GL_ARB_framebuffer_object | 380 // no support for render targets unless the GL_ARB_framebuffer_object |
379 // extension is supported (in which case we get ALPHA, RED, RG, RGB, | 381 // extension is supported (in which case we get ALPHA, RED, RG, RGB, |
380 // RGBA (ALPHA8, RGBA4, RGBA8) for OpenGL > 1.1). Note that we | 382 // RGBA (ALPHA8, RGBA4, RGBA8) for OpenGL > 1.1). Note that we |
381 // probably don't get R8 in this case. | 383 // probably don't get R8 in this case. |
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451 | 453 |
452 // If we don't support MSAA then undo any places above where we set a config
as renderable with | 454 // If we don't support MSAA then undo any places above where we set a config
as renderable with |
453 // msaa. | 455 // msaa. |
454 if (kNone_MSFBOType == fMSFBOType) { | 456 if (kNone_MSFBOType == fMSFBOType) { |
455 for (int i = 0; i < kGrPixelConfigCnt; ++i) { | 457 for (int i = 0; i < kGrPixelConfigCnt; ++i) { |
456 fConfigRenderSupport[i][kYes_MSAA] = false; | 458 fConfigRenderSupport[i][kYes_MSAA] = false; |
457 } | 459 } |
458 } | 460 } |
459 } | 461 } |
460 | 462 |
| 463 void GrGLCaps::initCompressedTextureSupport(const GrGLContextInfo &ctxInfo) { |
| 464 GrGLStandard standard = ctxInfo.standard(); |
| 465 GrGLVersion version = ctxInfo.version(); |
| 466 |
| 467 // glCompressedTexImage2D is available on all OpenGL ES devices... |
| 468 // however, it is only available on standard OpenGL after version 1.3 |
| 469 if (kGL_GrGLStandard == standard && version < GR_GL_VER(1, 3)) { |
| 470 return; |
| 471 } |
| 472 |
| 473 // Check for ETC1 |
| 474 bool hasETC1 = false; |
| 475 |
| 476 // First check version for support |
| 477 if (kGL_GrGLStandard == standard) { |
| 478 hasETC1 = |
| 479 version >= GR_GL_VER(4, 3) || |
| 480 ctxInfo.hasExtension("GL_ARB_ES3_compatibility"); |
| 481 } else { |
| 482 hasETC1 = |
| 483 version >= GR_GL_VER(3, 0) || |
| 484 ctxInfo.hasExtension("GL_OES_compressed_ETC1_RGB8_texture") || |
| 485 // ETC2 is a superset of ETC1, so we can just check for that, too. |
| 486 (ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGB8_texture") && |
| 487 ctxInfo.hasExtension("GL_OES_compressed_ETC2_RGBA8_texture")); |
| 488 } |
| 489 fCompressedFormatSupport[kETC1_GrCompressedFormat] = hasETC1; |
| 490 |
| 491 fCompressedFormatSupport[kETC2_GrCompressedFormat] = false; |
| 492 fCompressedFormatSupport[kDXT1_GrCompressedFormat] = false; |
| 493 } |
| 494 |
461 bool GrGLCaps::readPixelsSupported(const GrGLInterface* intf, | 495 bool GrGLCaps::readPixelsSupported(const GrGLInterface* intf, |
462 GrGLenum format, | 496 GrGLenum format, |
463 GrGLenum type) const { | 497 GrGLenum type) const { |
464 if (GR_GL_RGBA == format && GR_GL_UNSIGNED_BYTE == type) { | 498 if (GR_GL_RGBA == format && GR_GL_UNSIGNED_BYTE == type) { |
465 // ES 2 guarantees this format is supported | 499 // ES 2 guarantees this format is supported |
466 return true; | 500 return true; |
467 } | 501 } |
468 | 502 |
469 if (!fTwoFormatLimit) { | 503 if (!fTwoFormatLimit) { |
470 // not limited by ES 2's constraints | 504 // not limited by ES 2's constraints |
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709 r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO")); | 743 r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO")); |
710 r.appendf("Fragment coord conventions support: %s\n", | 744 r.appendf("Fragment coord conventions support: %s\n", |
711 (fFragCoordsConventionSupport ? "YES": "NO")); | 745 (fFragCoordsConventionSupport ? "YES": "NO")); |
712 r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ?
"YES": "NO")); | 746 r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ?
"YES": "NO")); |
713 r.appendf("Use non-VBO for dynamic data: %s\n", | 747 r.appendf("Use non-VBO for dynamic data: %s\n", |
714 (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO")); | 748 (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO")); |
715 r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO
")); | 749 r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO
")); |
716 r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES"
: "NO")); | 750 r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES"
: "NO")); |
717 return r; | 751 return r; |
718 } | 752 } |
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