3 * Copyright 2013 Google Inc.
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
8 #ifndef GrDrawTargetCaps_DEFINED
9 #define GrDrawTargetCaps_DEFINED
16 * Represents the draw target capabilities.
18 class GrDrawTargetCaps : public SkRefCnt {
20 SK_DECLARE_INST_COUNT(Caps)
22 GrDrawTargetCaps() { this->reset(); }
23 GrDrawTargetCaps(const GrDrawTargetCaps& other) : INHERITED() { *this = other; }
24 GrDrawTargetCaps& operator= (const GrDrawTargetCaps&);
27 virtual SkString dump() const;
29 bool eightBitPaletteSupport() const { return f8BitPaletteSupport; }
30 bool npotTextureTileSupport() const { return fNPOTTextureTileSupport; }
31 /** To avoid as-yet-unnecessary complexity we don't allow any partial support of MIP Maps (e.g.
32 only for POT textures) */
33 bool mipMapSupport() const { return fMipMapSupport; }
34 bool twoSidedStencilSupport() const { return fTwoSidedStencilSupport; }
35 bool stencilWrapOpsSupport() const { return fStencilWrapOpsSupport; }
36 bool hwAALineSupport() const { return fHWAALineSupport; }
37 bool shaderDerivativeSupport() const { return fShaderDerivativeSupport; }
38 bool geometryShaderSupport() const { return fGeometryShaderSupport; }
39 bool dualSourceBlendingSupport() const { return fDualSourceBlendingSupport; }
40 bool pathRenderingSupport() const { return fPathRenderingSupport; }
41 bool dstReadInShaderSupport() const { return fDstReadInShaderSupport; }
42 bool discardRenderTargetSupport() const { return fDiscardRenderTargetSupport; }
43 bool gpuTracingSupport() const { return fGpuTracingSupport; }
46 * Indicates whether GPU->CPU memory mapping for GPU resources such as vertex buffers and
47 * textures allows partial mappings or full mappings.
50 kNone_MapFlags = 0x0, //<! Cannot map the resource.
52 kCanMap_MapFlag = 0x1, //<! The resource can be mapped. Must be set for any of
53 // the other flags to have meaning.k
54 kSubset_MapFlag = 0x2, //<! The resource can be partially mapped.
57 uint32_t mapBufferFlags() const { return fMapBufferFlags; }
59 // Scratch textures not being reused means that those scratch textures
60 // that we upload to (i.e., don't have a render target) will not be
61 // recycled in the texture cache. This is to prevent ghosting by drivers
62 // (in particular for deferred architectures).
63 bool reuseScratchTextures() const { return fReuseScratchTextures; }
65 int maxRenderTargetSize() const { return fMaxRenderTargetSize; }
66 int maxTextureSize() const { return fMaxTextureSize; }
67 // Will be 0 if MSAA is not supported
68 int maxSampleCount() const { return fMaxSampleCount; }
70 bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const {
71 SkASSERT(kGrPixelConfigCnt > config);
72 return fConfigRenderSupport[config][withMSAA];
76 bool f8BitPaletteSupport : 1;
77 bool fNPOTTextureTileSupport : 1;
78 bool fMipMapSupport : 1;
79 bool fTwoSidedStencilSupport : 1;
80 bool fStencilWrapOpsSupport : 1;
81 bool fHWAALineSupport : 1;
82 bool fShaderDerivativeSupport : 1;
83 bool fGeometryShaderSupport : 1;
84 bool fDualSourceBlendingSupport : 1;
85 bool fPathRenderingSupport : 1;
86 bool fDstReadInShaderSupport : 1;
87 bool fDiscardRenderTargetSupport: 1;
88 bool fReuseScratchTextures : 1;
89 bool fGpuTracingSupport : 1;
91 uint32_t fMapBufferFlags;
93 int fMaxRenderTargetSize;
97 // The first entry for each config is without msaa and the second is with.
98 bool fConfigRenderSupport[kGrPixelConfigCnt][2];
100 typedef SkRefCnt INHERITED;