The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/gpu/gl/GrGLIRect.h
gfx/skia/trunk/src/gpu/gl/GrGLIRect.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:406185007a36 |
|---|---|
| 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 | |
| 9 | |
| 10 #ifndef GrGLIRect_DEFINED | |
| 11 #define GrGLIRect_DEFINED | |
| 12 | |
| 13 #include "gl/GrGLInterface.h" | |
| 14 #include "GrGLUtil.h" | |
| 15 | |
| 16 /** | |
| 17 * Helper struct for dealing with the fact that Ganesh and GL use different | |
| 18 * window coordinate systems (top-down vs bottom-up) | |
| 19 */ | |
| 20 struct GrGLIRect { | |
| 21 GrGLint fLeft; | |
| 22 GrGLint fBottom; | |
| 23 GrGLsizei fWidth; | |
| 24 GrGLsizei fHeight; | |
| 25 | |
| 26 void pushToGLViewport(const GrGLInterface* gl) const { | |
| 27 GR_GL_CALL(gl, Viewport(fLeft, fBottom, fWidth, fHeight)); | |
| 28 } | |
| 29 | |
| 30 void pushToGLScissor(const GrGLInterface* gl) const { | |
| 31 GR_GL_CALL(gl, Scissor(fLeft, fBottom, fWidth, fHeight)); | |
| 32 } | |
| 33 | |
| 34 void setFromGLViewport(const GrGLInterface* gl) { | |
| 35 GR_STATIC_ASSERT(sizeof(GrGLIRect) == 4*sizeof(GrGLint)); | |
| 36 GR_GL_GetIntegerv(gl, GR_GL_VIEWPORT, (GrGLint*) this); | |
| 37 } | |
| 38 | |
| 39 // sometimes we have a SkIRect from the client that we | |
| 40 // want to simultaneously make relative to GL's viewport | |
| 41 // and (optionally) convert from top-down to bottom-up. | |
| 42 void setRelativeTo(const GrGLIRect& glRect, | |
| 43 int leftOffset, | |
| 44 int topOffset, | |
| 45 int width, | |
| 46 int height, | |
| 47 GrSurfaceOrigin origin) { | |
| 48 fLeft = glRect.fLeft + leftOffset; | |
| 49 fWidth = width; | |
| 50 if (kBottomLeft_GrSurfaceOrigin == origin) { | |
| 51 fBottom = glRect.fBottom + (glRect.fHeight - topOffset - height); | |
| 52 } else { | |
| 53 fBottom = glRect.fBottom + topOffset; | |
| 54 } | |
| 55 fHeight = height; | |
| 56 | |
| 57 SkASSERT(fLeft >= 0); | |
| 58 SkASSERT(fWidth >= 0); | |
| 59 SkASSERT(fBottom >= 0); | |
| 60 SkASSERT(fHeight >= 0); | |
| 61 } | |
| 62 | |
| 63 bool contains(const GrGLIRect& glRect) const { | |
| 64 return fLeft <= glRect.fLeft && | |
| 65 fBottom <= glRect.fBottom && | |
| 66 fLeft + fWidth >= glRect.fLeft + glRect.fWidth && | |
| 67 fBottom + fHeight >= glRect.fBottom + glRect.fHeight; | |
| 68 } | |
| 69 | |
| 70 void invalidate() {fLeft = fWidth = fBottom = fHeight = -1;} | |
| 71 | |
| 72 bool operator ==(const GrGLIRect& glRect) const { | |
| 73 return 0 == memcmp(this, &glRect, sizeof(GrGLIRect)); | |
| 74 } | |
| 75 | |
| 76 bool operator !=(const GrGLIRect& glRect) const {return !(*this == glRect);} | |
| 77 }; | |
| 78 | |
| 79 #endif |
