skia2/tools/sk_app/ios/Window_ios.h
Brian Salomon 48825b11ad Redefine the meaning of sample counts in GPU backend.
Old: 0  -> nonMSAA
     1+ -> MSAA

New:
     0  -> error/unsupported
     1  -> nonMSAA
     2+ -> MSAA

We still allow 0 to mean nonMSAA in three sets of public APIs for backwards compatibility:

1) SkSurface factories
2) GrBackendRenderTarget constructors
3) GrCaps::getSampleCnt()'s requestedCount parameter

However, we immediately clamp to 1 and treat 0 as invalid/non-renderable internally.

This also changes the behavior when using a large sample count. We now fail in that case rather than using the largest sample available sample count. GrCaps::getSampleCount() will return 0 in this case.


Bug: skia:
Change-Id: Ida22c6b22c1365e563c9046b611e88bf5eb3ff33
Reviewed-on: https://skia-review.googlesource.com/101560
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2018-02-01 18:16:58 +00:00

61 lines
1.2 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef Window_ios_DEFINED
#define Window_ios_DEFINED
#include "../Window.h"
#include "SkChecksum.h"
#include "SkTDynamicHash.h"
#include "SDL.h"
namespace sk_app {
class Window_ios : public Window {
public:
Window_ios() : INHERITED(), fWindow(nullptr), fWindowID(0), fMSAASampleCount(1) {}
~Window_ios() override { this->closeWindow(); }
bool initWindow();
void setTitle(const char*) override;
void show() override;
bool attach(BackendType) override;
void onInval() override;
static bool HandleWindowEvent(const SDL_Event& event);
static const Uint32& GetKey(const Window_ios& w) {
return w.fWindowID;
}
static uint32_t Hash(const Uint32& winID) {
return winID;
}
private:
bool handleEvent(const SDL_Event& event);
void closeWindow();
static SkTDynamicHash<Window_ios, Uint32> gWindowMap;
SDL_Window* fWindow;
Uint32 fWindowID;
int fMSAASampleCount;
typedef Window INHERITED;
};
} // namespace sk_app
#endif