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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 #ifndef GrDrawState_DEFINED | 8 #ifndef GrDrawState_DEFINED |
9 #define GrDrawState_DEFINED | 9 #define GrDrawState_DEFINED |
10 | 10 |
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514 enum BlendOptFlags { | 514 enum BlendOptFlags { |
515 /** | 515 /** |
516 * No optimization | 516 * No optimization |
517 */ | 517 */ |
518 kNone_BlendOpt = 0, | 518 kNone_BlendOpt = 0, |
519 /** | 519 /** |
520 * Don't draw at all | 520 * Don't draw at all |
521 */ | 521 */ |
522 kSkipDraw_BlendOptFlag = 0x1, | 522 kSkipDraw_BlendOptFlag = 0x1, |
523 /** | 523 /** |
| 524 * Emit the src color, disable HW blending (replace dst with src) |
| 525 */ |
| 526 kDisableBlend_BlendOptFlag = 0x2, |
| 527 /** |
524 * The coverage value does not have to be computed separately from alpha
, the the output | 528 * The coverage value does not have to be computed separately from alpha
, the the output |
525 * color can be the modulation of the two. | 529 * color can be the modulation of the two. |
526 */ | 530 */ |
527 kCoverageAsAlpha_BlendOptFlag = 0x2, | 531 kCoverageAsAlpha_BlendOptFlag = 0x4, |
528 /** | 532 /** |
529 * Instead of emitting a src color, emit coverage in the alpha channel a
nd r,g,b are | 533 * Instead of emitting a src color, emit coverage in the alpha channel a
nd r,g,b are |
530 * "don't cares". | 534 * "don't cares". |
531 */ | 535 */ |
532 kEmitCoverage_BlendOptFlag = 0x4, | 536 kEmitCoverage_BlendOptFlag = 0x8, |
533 /** | 537 /** |
534 * Emit transparent black instead of the src color, no need to compute c
overage. | 538 * Emit transparent black instead of the src color, no need to compute c
overage. |
535 */ | 539 */ |
536 kEmitTransBlack_BlendOptFlag = 0x8, | 540 kEmitTransBlack_BlendOptFlag = 0x10, |
537 /** | 541 /** |
538 * Flag used to invalidate the cached BlendOptFlags, OptSrcCoeff, and Op
tDstCoeff cached by | 542 * Flag used to invalidate the cached BlendOptFlags, OptSrcCoeff, and Op
tDstCoeff cached by |
539 * the get BlendOpts function. | 543 * the get BlendOpts function. |
540 */ | 544 */ |
541 kInvalid_BlendOptFlag = 0x10, | 545 kInvalid_BlendOptFlag = 0x20, |
542 }; | 546 }; |
543 GR_DECL_BITFIELD_OPS_FRIENDS(BlendOptFlags); | 547 GR_DECL_BITFIELD_OPS_FRIENDS(BlendOptFlags); |
544 | 548 |
545 void invalidateBlendOptFlags() { | 549 void invalidateBlendOptFlags() { |
546 fBlendOptFlags = kInvalid_BlendOptFlag; | 550 fBlendOptFlags = kInvalid_BlendOptFlag; |
547 } | 551 } |
548 | 552 |
549 /** | 553 /** |
550 * We don't use suplied vertex color attributes if our blend mode is EmitCov
erage or | 554 * We don't use suplied vertex color attributes if our blend mode is EmitCov
erage or |
551 * EmitTransBlack | 555 * EmitTransBlack |
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1005 * @param count the number of attributes being set, limited to kMaxVer
texAttribCnt. | 1009 * @param count the number of attributes being set, limited to kMaxVer
texAttribCnt. |
1006 */ | 1010 */ |
1007 void setVertexAttribs(const GrVertexAttrib attribs[], int count); | 1011 void setVertexAttribs(const GrVertexAttrib attribs[], int count); |
1008 | 1012 |
1009 typedef SkRefCnt INHERITED; | 1013 typedef SkRefCnt INHERITED; |
1010 }; | 1014 }; |
1011 | 1015 |
1012 GR_MAKE_BITFIELD_OPS(GrDrawState::BlendOptFlags); | 1016 GR_MAKE_BITFIELD_OPS(GrDrawState::BlendOptFlags); |
1013 | 1017 |
1014 #endif | 1018 #endif |
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