GrContextOptions.h revision 6dea83f244cfdea52901eef6b31cee60b07a8ea0 
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
13struct GrContextOptions {
14    GrContextOptions()
15        : fDrawPathToCompressedTexture(false)
16        , fSuppressPrints(false)
17        , fMaxTextureSizeOverride(SK_MaxS32)
18        , fMaxTileSizeOverride(0)
19        , fSuppressDualSourceBlending(false)
20        , fGeometryBufferMapThreshold(-1)
21        , fUseDrawInsteadOfPartialRenderTargetWrite(false)
22        , fImmediateMode(false)
23        , fClipBatchToBounds(false)
24        , fDrawBatchBounds(false)
25        , fUseShaderSwizzling(false) {}
26
27    // EXPERIMENTAL
28    // May be removed in the future, or may become standard depending
29    // on the outcomes of a variety of internal tests.
30    bool fDrawPathToCompressedTexture;
31
32    // Suppress prints for the GrContext.
33    bool fSuppressPrints;
34
35    /** Overrides: These options override feature detection using backend API queries. These
36        overrides can only reduce the feature set or limits, never increase them beyond the
37        detected values. */
38
39    int  fMaxTextureSizeOverride;
40    /** If non-zero, overrides the maximum size of a tile for sw-backed images and bitmaps rendered
41        by SkGpuDevice. */
42    int  fMaxTileSizeOverride;
43    bool fSuppressDualSourceBlending;
44
45    /** the threshold in bytes above which we will use a buffer mapping API to map vertex and index
46        buffers to CPU memory in order to update them.  A value of -1 means the GrContext should
47        deduce the optimal value for this platform. */
48    int  fGeometryBufferMapThreshold;
49
50    /** some gpus have problems with partial writes of the rendertarget */
51    bool fUseDrawInsteadOfPartialRenderTargetWrite;
52
53    /** The GrContext operates in immediate mode. It will issue all draws to the backend API
54        immediately. Intended to ease debugging. */
55    bool fImmediateMode;
56
57    /** For debugging purposes turn each GrBatch's bounds into a clip rect. This is used to
58        verify that the clip bounds are conservative. */
59    bool fClipBatchToBounds;
60
61    /** For debugging purposes draw a wireframe device bounds rect for each GrBatch. The wire
62        frame rect is draw before the GrBatch in order to visualize batches that draw outside
63        of their dev bounds. */
64    bool fDrawBatchBounds;
65
66    /** Force us to do all swizzling manually in the shader and don't rely on extensions to do
67        swizzling. */
68    bool fUseShaderSwizzling;
69};
70
71#endif
72