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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrContextOptions_DEFINED
#define GrContextOptions_DEFINED
#include "SkTypes.h"
#include "GrTypes.h"
struct GrContextOptions {
GrContextOptions() {}
// Suppress prints for the GrContext.
bool fSuppressPrints = false;
/** Overrides: These options override feature detection using backend API queries. These
overrides can only reduce the feature set or limits, never increase them beyond the
detected values. */
int fMaxTextureSizeOverride = SK_MaxS32;
/** If non-zero, overrides the maximum size of a tile for sw-backed images and bitmaps rendered
by SkGpuDevice. */
int fMaxTileSizeOverride = 0;
bool fSuppressDualSourceBlending = false;
/** the threshold in bytes above which we will use a buffer mapping API to map vertex and index
buffers to CPU memory in order to update them. A value of -1 means the GrContext should
deduce the optimal value for this platform. */
int fBufferMapThreshold = -1;
/** some gpus have problems with partial writes of the rendertarget */
bool fUseDrawInsteadOfPartialRenderTargetWrite = false;
/** Force us to do all swizzling manually in the shader and don't rely on extensions to do
swizzling. */
bool fUseShaderSwizzling = false;
/** Construct mipmaps manually, via repeated downsampling draw-calls. This is used when
the driver's implementation (glGenerateMipmap) contains bugs. This requires mipmap
level and LOD control (ie desktop or ES3). */
bool fDoManualMipmapping = false;
/** Enable instanced rendering as long as all required functionality is supported by the HW.
Instanced rendering is still experimental at this point and disabled by default. */
bool fEnableInstancedRendering = false;
/**
* If true this allows path mask textures to be cached. This is only really useful if paths
* are commonly rendered at the same scale and fractional translation.
*/
bool fAllowPathMaskCaching = false;
/**
* If true, sRGB support will not be enabled unless sRGB decoding can be disabled (via an
* extension). If mixed use of "legacy" mode and sRGB/color-correct mode is not required, this
* can be set to false, which will significantly expand the number of devices that qualify for
* sRGB support.
*/
bool fRequireDecodeDisableForSRGB = true;
/**
* If true, the GPU will not be used to perform YUV -> RGB conversion when generating
* textures from codec-backed images.
*/
bool fDisableGpuYUVConversion = false;
/**
* If true, the caps will never report driver support for path rendering.
*/
bool fSuppressPathRendering = false;
/**
* Render everything in wireframe
*/
bool fWireframeMode = false;
/**
* Allows the client to include or exclude specific GPU path renderers.
*/
enum class GpuPathRenderers {
kNone = 0, // Always use sofware masks.
kDashLine = 1 << 0,
kStencilAndCover = 1 << 1,
kMSAA = 1 << 2,
kAAHairline = 1 << 3,
kAAConvex = 1 << 4,
kAALinearizing = 1 << 5,
kSmall = 1 << 6,
kTessellating = 1 << 7,
kDefault = 1 << 8,
kAll = kDefault | (kDefault - 1),
// For legacy. To be removed when updated in Android.
kDistanceField = kSmall
};
GpuPathRenderers fGpuPathRenderers = GpuPathRenderers::kAll;
/**
* The maximum size of cache textures used for Skia's Glyph cache.
*/
float fGlyphCacheTextureMaximumBytes = 2048 * 1024 * 4;
/**
* Bugs on certain drivers cause stencil buffers to leak. This flag causes Skia to avoid
* allocating stencil buffers and use alternate rasterization paths, avoiding the leak.
*/
bool fAvoidStencilBuffers = false;
};
GR_MAKE_BITFIELD_CLASS_OPS(GrContextOptions::GpuPathRenderers)
#endif
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