| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/gpu/ccpr/GrCCAtlas.h" |
| |
| #include "include/private/SkTPin.h" |
| #include "src/core/SkIPoint16.h" |
| #include "src/gpu/GrOnFlushResourceProvider.h" |
| |
| static SkISize choose_initial_atlas_size(const GrCCAtlas::Specs& specs) { |
| // Begin with the first pow2 dimensions whose area is theoretically large enough to contain the |
| // pending paths, favoring height over width if necessary. |
| int log2area = SkNextLog2(std::max(specs.fApproxNumPixels, 1)); |
| int height = 1 << ((log2area + 1) / 2); |
| int width = 1 << (log2area / 2); |
| |
| width = SkTPin(width, specs.fMinTextureSize, specs.fMaxPreferredTextureSize); |
| height = SkTPin(height, specs.fMinTextureSize, specs.fMaxPreferredTextureSize); |
| |
| return SkISize::Make(width, height); |
| } |
| |
| static int choose_max_atlas_size(const GrCCAtlas::Specs& specs, const GrCaps& caps) { |
| return (std::max(specs.fMinHeight, specs.fMinWidth) <= specs.fMaxPreferredTextureSize) ? |
| specs.fMaxPreferredTextureSize : caps.maxRenderTargetSize(); |
| } |
| |
| GrCCAtlas::GrCCAtlas(const Specs& specs, const GrCaps& caps) |
| : GrDynamicAtlas(GrColorType::kAlpha_8, InternalMultisample::kYes, |
| choose_initial_atlas_size(specs), choose_max_atlas_size(specs, caps), |
| caps) { |
| SkASSERT(specs.fMaxPreferredTextureSize > 0); |
| } |
| |
| GrCCAtlas::~GrCCAtlas() { |
| } |