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 GrContextOptions_DEFINED 9 #define GrContextOptions_DEFINED 10 11 #include "SkTypes.h" 12 #include "GrTypes.h" 13 14 struct GrContextOptions { 15 GrContextOptions() {} 16 17 // Suppress prints for the GrContext. 18 bool fSuppressPrints = false; 19 20 /** Overrides: These options override feature detection using backend API queries. These 21 overrides can only reduce the feature set or limits, never increase them beyond the 22 detected values. */ 23 24 int fMaxTextureSizeOverride = SK_MaxS32; 25 26 /** If non-zero, overrides the maximum size of a tile for sw-backed images and bitmaps rendered 27 by SkGpuDevice. */ 28 int fMaxTileSizeOverride = 0; 29 bool fSuppressDualSourceBlending = false; 30 31 /** the threshold in bytes above which we will use a buffer mapping API to map vertex and index 32 buffers to CPU memory in order to update them. A value of -1 means the GrContext should 33 deduce the optimal value for this platform. */ 34 int fBufferMapThreshold = -1; 35 36 /** some gpus have problems with partial writes of the rendertarget */ 37 bool fUseDrawInsteadOfPartialRenderTargetWrite = false; 38 39 /** The GrContext operates in immediate mode. It will issue all draws to the backend API 40 immediately. Intended to ease debugging. */ 41 bool fImmediateMode = false; 42 43 /** For debugging, override the default maximum look-back or look-ahead window for GrOp 44 combining. */ 45 int fMaxOpCombineLookback = -1; 46 int fMaxOpCombineLookahead = -1; 47 48 /** Force us to do all swizzling manually in the shader and don't rely on extensions to do 49 swizzling. */ 50 bool fUseShaderSwizzling = false; 51 52 /** Construct mipmaps manually, via repeated downsampling draw-calls. This is used when 53 the driver's implementation (glGenerateMipmap) contains bugs. This requires mipmap 54 level and LOD control (ie desktop or ES3). */ 55 bool fDoManualMipmapping = false; 56 57 /** Enable instanced rendering as long as all required functionality is supported by the HW. 58 Instanced rendering is still experimental at this point and disabled by default. */ 59 bool fEnableInstancedRendering = false; 60 61 /** 62 * If true this allows path mask textures to be cached. This is only really useful if paths 63 * are commonly rendered at the same scale and fractional translation. 64 */ 65 bool fAllowPathMaskCaching = false; 66 67 /** 68 * If true, sRGB support will not be enabled unless sRGB decoding can be disabled (via an 69 * extension). If mixed use of "legacy" mode and sRGB/color-correct mode is not required, this 70 * can be set to false, which will significantly expand the number of devices that qualify for 71 * sRGB support. 72 */ 73 bool fRequireDecodeDisableForSRGB = true; 74 75 /** 76 * If true, the GPU will not be used to perform YUV -> RGB conversion when generating 77 * textures from codec-backed images. 78 */ 79 bool fDisableGpuYUVConversion = false; 80 81 /** 82 * If true, the caps will never report driver support for path rendering. 83 */ 84 bool fSuppressPathRendering = false; 85 86 /** 87 * Allows the client to include or exclude specific GPU path renderers. 88 */ 89 enum class GpuPathRenderers { 90 kNone = 0, // Always use sofware masks. 91 kDashLine = 1 << 0, 92 kStencilAndCover = 1 << 1, 93 kMSAA = 1 << 2, 94 kAAHairline = 1 << 3, 95 kAAConvex = 1 << 4, 96 kAALinearizing = 1 << 5, 97 kSmall = 1 << 6, 98 kTessellating = 1 << 7, 99 kDefault = 1 << 8, 100 101 kAll = kDefault | (kDefault - 1), 102 103 // For legacy. To be removed when updated in Android. 104 kDistanceField = kSmall 105 }; 106 107 GpuPathRenderers fGpuPathRenderers = GpuPathRenderers::kAll; 108 }; 109 110 GR_MAKE_BITFIELD_CLASS_OPS(GrContextOptions::GpuPathRenderers) 111 112 #endif 113
