gfx/skia/trunk/src/gpu/gl/GrGLRenderTarget.h@b8a032363ba2 (annotated)
gfx/skia/trunk/src/gpu/gl/GrGLRenderTarget.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2011 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | |
| michael@0 | 9 | #ifndef GrGLRenderTarget_DEFINED |
| michael@0 | 10 | #define GrGLRenderTarget_DEFINED |
| michael@0 | 11 | |
| michael@0 | 12 | #include "GrGLIRect.h" |
| michael@0 | 13 | #include "GrRenderTarget.h" |
| michael@0 | 14 | #include "SkScalar.h" |
| michael@0 | 15 | |
| michael@0 | 16 | class GrGpuGL; |
| michael@0 | 17 | class GrGLTexture; |
| michael@0 | 18 | class GrGLTexID; |
| michael@0 | 19 | |
| michael@0 | 20 | class GrGLRenderTarget : public GrRenderTarget { |
| michael@0 | 21 | |
| michael@0 | 22 | public: |
| michael@0 | 23 | // set fTexFBOID to this value to indicate that it is multisampled but |
| michael@0 | 24 | // Gr doesn't know how to resolve it. |
| michael@0 | 25 | enum { kUnresolvableFBOID = 0 }; |
| michael@0 | 26 | |
| michael@0 | 27 | struct Desc { |
| michael@0 | 28 | GrGLuint fRTFBOID; |
| michael@0 | 29 | GrGLuint fTexFBOID; |
| michael@0 | 30 | GrGLuint fMSColorRenderbufferID; |
| michael@0 | 31 | bool fIsWrapped; |
| michael@0 | 32 | GrPixelConfig fConfig; |
| michael@0 | 33 | int fSampleCnt; |
| michael@0 | 34 | GrSurfaceOrigin fOrigin; |
| michael@0 | 35 | bool fCheckAllocation; |
| michael@0 | 36 | }; |
| michael@0 | 37 | |
| michael@0 | 38 | // creates a GrGLRenderTarget associated with a texture |
| michael@0 | 39 | GrGLRenderTarget(GrGpuGL* gpu, |
| michael@0 | 40 | const Desc& desc, |
| michael@0 | 41 | const GrGLIRect& viewport, |
| michael@0 | 42 | GrGLTexID* texID, |
| michael@0 | 43 | GrGLTexture* texture); |
| michael@0 | 44 | |
| michael@0 | 45 | // creates an independent GrGLRenderTarget |
| michael@0 | 46 | GrGLRenderTarget(GrGpuGL* gpu, |
| michael@0 | 47 | const Desc& desc, |
| michael@0 | 48 | const GrGLIRect& viewport); |
| michael@0 | 49 | |
| michael@0 | 50 | virtual ~GrGLRenderTarget() { this->release(); } |
| michael@0 | 51 | |
| michael@0 | 52 | void setViewport(const GrGLIRect& rect) { fViewport = rect; } |
| michael@0 | 53 | const GrGLIRect& getViewport() const { return fViewport; } |
| michael@0 | 54 | |
| michael@0 | 55 | // The following two functions return the same ID when a |
| michael@0 | 56 | // texture/render target is multisampled, and different IDs when |
| michael@0 | 57 | // it is. |
| michael@0 | 58 | // FBO ID used to render into |
| michael@0 | 59 | GrGLuint renderFBOID() const { return fRTFBOID; } |
| michael@0 | 60 | // FBO ID that has texture ID attached. |
| michael@0 | 61 | GrGLuint textureFBOID() const { return fTexFBOID; } |
| michael@0 | 62 | |
| michael@0 | 63 | // override of GrRenderTarget |
| michael@0 | 64 | virtual GrBackendObject getRenderTargetHandle() const { |
| michael@0 | 65 | return this->renderFBOID(); |
| michael@0 | 66 | } |
| michael@0 | 67 | virtual GrBackendObject getRenderTargetResolvedHandle() const { |
| michael@0 | 68 | return this->textureFBOID(); |
| michael@0 | 69 | } |
| michael@0 | 70 | virtual ResolveType getResolveType() const { |
| michael@0 | 71 | |
| michael@0 | 72 | if (!this->isMultisampled() || |
| michael@0 | 73 | fRTFBOID == fTexFBOID) { |
| michael@0 | 74 | // catches FBO 0 and non MSAA case |
| michael@0 | 75 | return kAutoResolves_ResolveType; |
| michael@0 | 76 | } else if (kUnresolvableFBOID == fTexFBOID) { |
| michael@0 | 77 | return kCantResolve_ResolveType; |
| michael@0 | 78 | } else { |
| michael@0 | 79 | return kCanResolve_ResolveType; |
| michael@0 | 80 | } |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | protected: |
| michael@0 | 84 | // override of GrResource |
| michael@0 | 85 | virtual void onAbandon() SK_OVERRIDE; |
| michael@0 | 86 | virtual void onRelease() SK_OVERRIDE; |
| michael@0 | 87 | |
| michael@0 | 88 | private: |
| michael@0 | 89 | GrGLuint fRTFBOID; |
| michael@0 | 90 | GrGLuint fTexFBOID; |
| michael@0 | 91 | |
| michael@0 | 92 | GrGLuint fMSColorRenderbufferID; |
| michael@0 | 93 | |
| michael@0 | 94 | // when we switch to this render target we want to set the viewport to |
| michael@0 | 95 | // only render to to content area (as opposed to the whole allocation) and |
| michael@0 | 96 | // we want the rendering to be at top left (GL has origin in bottom left) |
| michael@0 | 97 | GrGLIRect fViewport; |
| michael@0 | 98 | |
| michael@0 | 99 | // non-NULL if this RT was created by Gr with an associated GrGLTexture. |
| michael@0 | 100 | SkAutoTUnref<GrGLTexID> fTexIDObj; |
| michael@0 | 101 | |
| michael@0 | 102 | void init(const Desc& desc, const GrGLIRect& viewport, GrGLTexID* texID); |
| michael@0 | 103 | |
| michael@0 | 104 | typedef GrRenderTarget INHERITED; |
| michael@0 | 105 | }; |
| michael@0 | 106 | |
| michael@0 | 107 | #endif |
