src/third_party/skia/dm/DMGpuSupport.h

   1 #ifndef DMGpuSupport_DEFINED
   2 #define DMGpuSupport_DEFINED
   3
   4 // Provides Ganesh to DM,
   5 // or if it's not available, fakes it enough so most code doesn't have to know that.
   6
   7 #include "SkSurface.h"
   8
   9 #if SK_SUPPORT_GPU
  10
  11 // Ganesh is available.  Yippee!
  12
  13 #  include "GrContext.h"
  14 #  include "GrContextFactory.h"
  15
  16 namespace DM {
  17
  18 static const bool kGPUDisabled = false;
  19
  20 static inline SkSurface* NewGpuSurface(GrContextFactory* grFactory,
  21                                        GrContextFactory::GLContextType type,
  22                                        GrGLStandard gpuAPI,
  23                                        SkImageInfo info,
  24                                        int samples) {
  25     return SkSurface::NewRenderTarget(grFactory->get(type, gpuAPI), info, samples, NULL);
  26 }
  27
  28 }  // namespace DM
  29
  30 #else// !SK_SUPPORT_GPU
  31
  32 // Ganesh is not available.  Fake it.
  33
  34 enum GrGLStandard {
  35     kNone_GrGLStandard,
  36     kGL_GrGLStandard,
  37     kGLES_GrGLStandard
  38 };
  39 static const int kGrGLStandardCnt = 3;
  40
  41 class GrContextFactory {
  42 public:
  43     typedef int GLContextType;
  44
  45     static const GLContextType kANGLE_GLContextType  = 0,
  46                                kDebug_GLContextType  = 0,
  47                                kMESA_GLContextType   = 0,
  48                                kNVPR_GLContextType   = 0,
  49                                kNative_GLContextType = 0,
  50                                kNull_GLContextType   = 0;
  51     static const int kGLContextTypeCnt = 1;
  52     void destroyContexts() {}
  53
  54     void abandonContexts() {}
  55 };
  56
  57 namespace DM {
  58
  59 static const bool kGPUDisabled = true;
  60
  61 static inline SkSurface* NewGpuSurface(GrContextFactory*,
  62                                        GrContextFactory::GLContextType,
  63                                        GrGLStandard,
  64                                        SkImageInfo,
  65                                        int) {
  66     return NULL;
  67 }
  68
  69 }  // namespace DM
  70
  71 #endif//SK_SUPPORT_GPU
  72
  73 #endif//DMGpuSupport_DEFINED