bsalomon | afa95e2 | 2015-10-12 10:39:46 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 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 | #ifndef GrTextureParams_DEFINED |
| 9 | #define GrTextureParams_DEFINED |
| 10 | |
| 11 | #include "GrTypes.h" |
| 12 | #include "SkShader.h" |
| 13 | |
| 14 | /** |
| 15 | * Represents the filtering and tile modes used to access a texture. |
| 16 | */ |
| 17 | class GrTextureParams { |
| 18 | public: |
| 19 | static const GrTextureParams& ClampNoFilter() { |
| 20 | static const GrTextureParams gParams; |
| 21 | return gParams; |
| 22 | } |
| 23 | static const GrTextureParams& ClampBilerp() { |
| 24 | static const GrTextureParams gParams(SkShader::kClamp_TileMode, kBilerp_FilterMode); |
| 25 | return gParams; |
| 26 | } |
| 27 | |
| 28 | GrTextureParams() { |
| 29 | this->reset(); |
| 30 | } |
| 31 | |
| 32 | enum FilterMode { |
| 33 | kNone_FilterMode, |
| 34 | kBilerp_FilterMode, |
| 35 | kMipMap_FilterMode |
| 36 | }; |
| 37 | |
| 38 | GrTextureParams(SkShader::TileMode tileXAndY, FilterMode filterMode) { |
| 39 | this->reset(tileXAndY, filterMode); |
| 40 | } |
| 41 | |
| 42 | GrTextureParams(const SkShader::TileMode tileModes[2], FilterMode filterMode) { |
| 43 | this->reset(tileModes, filterMode); |
| 44 | } |
| 45 | |
| 46 | GrTextureParams(const GrTextureParams& params) { |
| 47 | *this = params; |
| 48 | } |
| 49 | |
| 50 | GrTextureParams& operator= (const GrTextureParams& params) { |
| 51 | fTileModes[0] = params.fTileModes[0]; |
| 52 | fTileModes[1] = params.fTileModes[1]; |
| 53 | fFilterMode = params.fFilterMode; |
| 54 | return *this; |
| 55 | } |
| 56 | |
| 57 | void reset() { |
| 58 | this->reset(SkShader::kClamp_TileMode, kNone_FilterMode); |
| 59 | } |
| 60 | |
| 61 | void reset(SkShader::TileMode tileXAndY, FilterMode filterMode) { |
| 62 | fTileModes[0] = fTileModes[1] = tileXAndY; |
| 63 | fFilterMode = filterMode; |
| 64 | } |
| 65 | |
| 66 | void reset(const SkShader::TileMode tileModes[2], FilterMode filterMode) { |
| 67 | fTileModes[0] = tileModes[0]; |
| 68 | fTileModes[1] = tileModes[1]; |
| 69 | fFilterMode = filterMode; |
| 70 | } |
| 71 | |
| 72 | void setClampNoFilter() { |
| 73 | fTileModes[0] = fTileModes[1] = SkShader::kClamp_TileMode; |
| 74 | fFilterMode = kNone_FilterMode; |
| 75 | } |
| 76 | |
| 77 | void setClamp() { |
| 78 | fTileModes[0] = fTileModes[1] = SkShader::kClamp_TileMode; |
| 79 | } |
| 80 | |
| 81 | void setFilterMode(FilterMode filterMode) { fFilterMode = filterMode; } |
| 82 | |
| 83 | void setTileModeX(const SkShader::TileMode tm) { fTileModes[0] = tm; } |
| 84 | void setTileModeY(const SkShader::TileMode tm) { fTileModes[1] = tm; } |
| 85 | void setTileModeXAndY(const SkShader::TileMode tm) { fTileModes[0] = fTileModes[1] = tm; } |
| 86 | |
| 87 | SkShader::TileMode getTileModeX() const { return fTileModes[0]; } |
| 88 | |
| 89 | SkShader::TileMode getTileModeY() const { return fTileModes[1]; } |
| 90 | |
| 91 | bool isTiled() const { |
| 92 | return SkShader::kClamp_TileMode != fTileModes[0] || |
| 93 | SkShader::kClamp_TileMode != fTileModes[1]; |
| 94 | } |
| 95 | |
| 96 | FilterMode filterMode() const { return fFilterMode; } |
| 97 | |
| 98 | bool operator== (const GrTextureParams& other) const { |
| 99 | return fTileModes[0] == other.fTileModes[0] && |
| 100 | fTileModes[1] == other.fTileModes[1] && |
brianosman | c571c00 | 2016-03-17 13:01:26 -0700 | [diff] [blame^] | 101 | fFilterMode == other.fFilterMode; |
bsalomon | afa95e2 | 2015-10-12 10:39:46 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | bool operator!= (const GrTextureParams& other) const { return !(*this == other); } |
| 105 | |
| 106 | private: |
| 107 | SkShader::TileMode fTileModes[2]; |
| 108 | FilterMode fFilterMode; |
bsalomon | afa95e2 | 2015-10-12 10:39:46 -0700 | [diff] [blame] | 109 | }; |
| 110 | #endif |