Add kRG_88_SkColorType

Bug: skia:9121

Change-Id: Id2a12a5d607b84ce393d2b58233bf8e23f646059
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235797
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Mike Reed <reed@google.com>

RELEASE_NOTES.txt

@@ -90,3 +90,7 @@ Milestone 78
   * Changed GrContextOptions' fDisallowGLSLBinaryCaching to fShaderCacheStrategy,
     and allow caching SkSL.
     https://review.skia.org/238856
+
+  * Added kRG_88_SkColorType. This is intended to help support YUV uses case (e.g., NV12).
+    As such, it the addition is focused on allowing creation of SkPixmaps and SkImages and not
+    SkSurfaces (i.e., who wants to render to RG?)

gm/bitmapcopy.cpp

@@ -40,6 +40,7 @@ static const char* color_type_name(SkColorType colorType) {
         case kRGBA_F16Norm_SkColorType: return "F16Norm";
         case kRGBA_F16_SkColorType:     return "F16";
         case kRGBA_F32_SkColorType:     return "F32";
+        case kRG_88_SkColorType:        return "RG88";
     }
     return "";
 }

gm/wacky_yuv_formats.cpp

@@ -523,7 +523,7 @@ static void extract_planes(const SkBitmap& bm, SkYUVColorSpace yuvColorSpace, Pl
     }
 }
 
-// Create a 2x2 downsampled SkBitmap. It is stored in an RGBA texture. It can optionally be
+// Create a 2x2 downsampled SkBitmap. It is stored in an RG texture. It can optionally be
 // uv (i.e., for P016, P010 and NV12) or vu (i.e., NV21).
 static SkBitmap make_quarter_2_channel(const SkBitmap& fullY,
                                        const SkBitmap& quarterU,
@@ -531,10 +531,9 @@ static SkBitmap make_quarter_2_channel(const SkBitmap& fullY,
                                        bool uv) {
     SkBitmap result;
 
-    // There isn't a RG color type. Approx w/ RGBA.
     result.allocPixels(SkImageInfo::Make(fullY.width()/2,
                                          fullY.height()/2,
-                                         kRGBA_8888_SkColorType,
+                                         kRG_88_SkColorType,
                                          kUnpremul_SkAlphaType));
 
     for (int y = 0; y < fullY.height()/2; ++y) {
@@ -543,13 +542,9 @@ static SkBitmap make_quarter_2_channel(const SkBitmap& fullY,
             uint8_t v8 = *quarterV.getAddr8(x, y);
 
             if (uv) {
-                // NOT premul!
+                *result.getAddr16(x, y) = (v8 << 8) | u8;
-                // U and 0 swapped to match RGBA layout
-                *result.getAddr32(x, y) = SkColorSetARGB(0xFF, 0, v8, u8);
             } else {
-                // NOT premul!
+                *result.getAddr16(x, y) = (u8 << 8) | v8;
-                // V and 0 swapped to match RGBA layout
-                *result.getAddr32(x, y) = SkColorSetARGB(0xFF, 0, u8, v8);
             }
         }
     }
@@ -698,6 +693,24 @@ static uint8_t look_up(float x1, float y1, const SkBitmap& bm, SkColorChannel ch
     if (kAlpha_8_SkColorType == bm.colorType() || kGray_8_SkColorType == bm.colorType()) {
         SkASSERT(SkColorChannel::kA == channel || SkColorChannel::kR == channel);
         result = *bm.getAddr8(x, y);
+    } else if (kRG_88_SkColorType == bm.colorType()) {
+        SkASSERT(SkColorChannel::kR == channel || SkColorChannel::kG == channel);
+        SkColor c = bm.getColor(x, y);
+
+        switch (channel) {
+            case SkColorChannel::kR:
+                result = SkColorGetR(c);
+                break;
+            case SkColorChannel::kG:
+                result = SkColorGetG(c);
+                break;
+            case SkColorChannel::kB:
+                result = 0;
+                break;
+            case SkColorChannel::kA:
+                result = 255;
+                break;
+        }
     } else if (kRGBA_8888_SkColorType == bm.colorType()) {
         SkColor c = *bm.getAddr32(x, y);
 
@@ -918,36 +931,12 @@ static void draw_row_label(SkCanvas* canvas, int y, int yuvFormat) {
     canvas->drawString(rowLabel, 0, y, font, paint);
 }
 
-static void make_RG_88(const GrCaps* caps,
-                       const SkBitmap& bm, YUVFormat yuvFormat,
-                       SkAutoTMalloc<uint8_t>* pixels,
-                       GrBackendFormat* format, size_t* rowBytes) {
-    SkASSERT(kNV12_YUVFormat == yuvFormat || kNV21_YUVFormat == yuvFormat);
-    SkASSERT(kRGBA_8888_SkColorType == bm.colorType());     // uv stored in rg
-
-    *rowBytes = bm.width() * 2 * sizeof(uint8_t);
-    pixels->reset(*rowBytes * bm.height());
-    uint8_t* currPixel = pixels->get();
-    for (int y = 0; y < bm.height(); ++y) {
-        for (int x = 0; x < bm.width(); ++x) {
-            SkColor color = bm.getColor(x, y);
-            uint8_t u8 = SkColorGetR(color);
-            uint8_t v8 = SkColorGetG(color);
-
-            currPixel[0] = u8;
-            currPixel[1] = v8;
-            currPixel += 2;
-        }
-    }
-    *format = caps->getDefaultBackendFormat(GrColorType::kRG_88, GrRenderable::kNo);
-}
-
 static void make_RG_1616(const GrCaps* caps,
                          const SkBitmap& bm, YUVFormat yuvFormat,
                          SkAutoTMalloc<uint8_t>* pixels,
                          GrBackendFormat* format, size_t* rowBytes) {
     SkASSERT(kP016_YUVFormat == yuvFormat || kP010_YUVFormat == yuvFormat);
-    SkASSERT(kRGBA_8888_SkColorType == bm.colorType());     // uv stored in rg
+    SkASSERT(kRG_88_SkColorType == bm.colorType());     // uv stored in rg
 
     uint16_t u16, v16;
     *rowBytes = bm.width() * 2 * sizeof(uint16_t);
@@ -1053,8 +1042,6 @@ static GrBackendTexture create_yuva_texture(GrContext* context, const SkBitmap&
         }
     }
 
-    GrBackendTexture tex;
-
     if (format_uses_16_bpp(yuvFormat) || 2 == channelCount) {
         // Due to the limitations of SkPixmap these cases need to be handled separately
         const GrCaps* caps = context->priv().caps();
@@ -1068,7 +1055,10 @@ static GrBackendTexture create_yuva_texture(GrContext* context, const SkBitmap&
             if (format_uses_16_bpp(yuvFormat)) {
                 make_RG_1616(caps, bm, yuvFormat, &pixels, &format, &rowBytes);
             } else {
-                make_RG_88(caps, bm, yuvFormat, &pixels, &format, &rowBytes);
+                SkASSERT(kRG_88_SkColorType == bm.colorType());
+
+                return context->priv().createBackendTexture(&bm.pixmap(), 1,
+                                                            GrRenderable::kNo, GrProtected::kNo);
             }
         } else {
             if (kRGBA_8888_SkColorType == bm.colorType()) {
@@ -1078,17 +1068,15 @@ static GrBackendTexture create_yuva_texture(GrContext* context, const SkBitmap&
             }
         }
 
-        // TODO: SkColorType needs to be expanded to allow this to be done via the
+        // TODO: SkColorType needs to be expanded to allow RG_1616, RGBA_16 and R_16 to be done
-        // GrContext::createBackendTexture API
+        // via GrContext::createBackendTexture
-        tex = gpu->createBackendTexture(bm.width(), bm.height(), format,
+        return gpu->createBackendTexture(bm.width(), bm.height(), format,
-                                        GrMipMapped::kNo, GrRenderable::kNo,
+                                         GrMipMapped::kNo, GrRenderable::kNo,
-                                        pixels, rowBytes, nullptr, GrProtected::kNo);
+                                         pixels, rowBytes, nullptr, GrProtected::kNo);
-    } else {
-        tex = context->priv().createBackendTexture(&bm.pixmap(), 1,
-                                                   GrRenderable::kNo, GrProtected::kNo);
     }
 
-    return tex;
+    return context->priv().createBackendTexture(&bm.pixmap(), 1,
+                                                GrRenderable::kNo, GrProtected::kNo);
 }
 
 static sk_sp<SkColorFilter> yuv_to_rgb_colorfilter() {

gn/tests.gni

@@ -70,6 +70,7 @@ tests_sources = [
   "$_tests/EncodeTest.cpp",
   "$_tests/EncodedInfoTest.cpp",
   "$_tests/ExifTest.cpp",
+  "$_tests/ExtendedSkColorTypeTests.cpp",
   "$_tests/F16StagesTest.cpp",
   "$_tests/FakeStreams.h",
   "$_tests/FillPathTest.cpp",

include/core/SkImageInfo.h

@@ -85,7 +85,8 @@ enum SkColorType {
     kRGBA_F16Norm_SkColorType, //!< pixel with half floats in [0,1] for red, green, blue, alpha; in 64-bit word
     kRGBA_F16_SkColorType,     //!< pixel with half floats for red, green, blue, alpha; in 64-bit word
     kRGBA_F32_SkColorType,     //!< pixel using C float for red, green, blue, alpha; in 128-bit word
-    kLastEnum_SkColorType     = kRGBA_F32_SkColorType,//!< last valid value
+    kRG_88_SkColorType,        //<! pixel with 8 bits each for red, green; in 16-bit word
+    kLastEnum_SkColorType     = kRG_88_SkColorType,//!< last valid value
 
 #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
     kN32_SkColorType          = kBGRA_8888_SkColorType,//!< native ARGB 32-bit encoding

include/gpu/GrContext.h

@@ -247,6 +247,10 @@ public:
      * use maxSurfaceSampleCountForColorType().
      */
     bool colorTypeSupportedAsSurface(SkColorType colorType) const {
+        if (kRG_88_SkColorType == colorType) {
+            return false;
+        }
+
         return this->maxSurfaceSampleCountForColorType(colorType) > 0;
     }
 

include/private/GrTypesPriv.h

@@ -1075,10 +1075,10 @@ static constexpr SkColorType GrColorTypeToSkColorType(GrColorType ct) {
         case GrColorType::kBGR_565:          return kRGB_565_SkColorType;
         case GrColorType::kABGR_4444:        return kARGB_4444_SkColorType;
         case GrColorType::kRGBA_8888:        return kRGBA_8888_SkColorType;
-        // Once we a kRGBA_8888_SRGB_SkColorType we should return that here.
+        // Once we add kRGBA_8888_SRGB_SkColorType we should return that here.
         case GrColorType::kRGBA_8888_SRGB:   return kRGBA_8888_SkColorType;
         case GrColorType::kRGB_888x:         return kRGB_888x_SkColorType;
-        case GrColorType::kRG_88:            return kUnknown_SkColorType;
+        case GrColorType::kRG_88:            return kRG_88_SkColorType;
         case GrColorType::kBGRA_8888:        return kBGRA_8888_SkColorType;
         case GrColorType::kRGBA_1010102:     return kRGBA_1010102_SkColorType;
         case GrColorType::kGray_8:           return kGray_8_SkColorType;
@@ -1113,6 +1113,7 @@ static constexpr GrColorType SkColorTypeToGrColorType(SkColorType ct) {
         case kRGBA_1010102_SkColorType: return GrColorType::kRGBA_1010102;
         case kRGB_101010x_SkColorType:  return GrColorType::kUnknown;
         case kRGBA_F32_SkColorType:     return GrColorType::kRGBA_F32;
+        case kRG_88_SkColorType:        return GrColorType::kRG_88;
     }
     SkUNREACHABLE;
 }

include/private/SkImageInfoPriv.h

@@ -16,6 +16,8 @@ enum SkColorTypeComponentFlag {
     kBlue_SkColorTypeComponentFlag   = 0x4,
     kAlpha_SkColorTypeComponentFlag  = 0x8,
     kGray_SkColorTypeComponentFlag   = 0x10,
+    kRG_SkColorTypeComponentFlags    = kRed_SkColorTypeComponentFlag |
+                                       kGreen_SkColorTypeComponentFlag,
     kRGB_SkColorTypeComponentFlags   = kRed_SkColorTypeComponentFlag |
                                        kGreen_SkColorTypeComponentFlag |
                                        kBlue_SkColorTypeComponentFlag,
@@ -38,8 +40,9 @@ static inline uint32_t SkColorTypeComponentFlags(SkColorType ct) {
         case kRGBA_F16Norm_SkColorType:     return kRGBA_SkColorTypeComponentFlags;
         case kRGBA_F16_SkColorType:         return kRGBA_SkColorTypeComponentFlags;
         case kRGBA_F32_SkColorType:         return kRGBA_SkColorTypeComponentFlags;
+        case kRG_88_SkColorType:            return kRG_SkColorTypeComponentFlags;
     }
-    return 0;
+    SkUNREACHABLE;
 }
 
 static inline bool SkColorTypeIsAlphaOnly(SkColorType ct) {
@@ -72,8 +75,9 @@ static int SkColorTypeShiftPerPixel(SkColorType ct) {
         case kRGBA_F16Norm_SkColorType:     return 3;
         case kRGBA_F16_SkColorType:         return 3;
         case kRGBA_F32_SkColorType:         return 4;
+        case kRG_88_SkColorType:            return 1;
     }
-    return 0;
+    SkUNREACHABLE;
 }
 
 static inline size_t SkColorTypeMinRowBytes(SkColorType ct, int width) {

modules/canvaskit/canvaskit_bindings.cpp

@@ -1234,7 +1234,8 @@ EMSCRIPTEN_BINDINGS(Skia) {
         .value("RGB_101010x", SkColorType::kRGB_101010x_SkColorType)
         .value("Gray_8", SkColorType::kGray_8_SkColorType)
         .value("RGBA_F16", SkColorType::kRGBA_F16_SkColorType)
-        .value("RGBA_F32", SkColorType::kRGBA_F32_SkColorType);
+        .value("RGBA_F32", SkColorType::kRGBA_F32_SkColorType)
+        .value("RG_88", SkColorType::kRG_88_SkColorType);
 
     enum_<SkPath::FillType>("FillType")
         .value("Winding",           SkPath::FillType::kWinding_FillType)

src/core/SkConvertPixels.cpp

@@ -86,6 +86,7 @@ static bool convert_to_alpha8(const SkImageInfo& dstInfo,       void* vdst, size
 
         case kGray_8_SkColorType:
         case kRGB_565_SkColorType:
+        case kRG_88_SkColorType:
         case kRGB_888x_SkColorType:
         case kRGB_101010x_SkColorType: {
             for (int y = 0; y < srcInfo.height(); ++y) {

src/core/SkImageInfo.cpp

@@ -25,8 +25,9 @@ int SkColorTypeBytesPerPixel(SkColorType ct) {
         case kRGBA_F16Norm_SkColorType: return 8;
         case kRGBA_F16_SkColorType:     return 8;
         case kRGBA_F32_SkColorType:     return 16;
+        case kRG_88_SkColorType:        return 2;
     }
-    return 0;
+    SkUNREACHABLE;
 }
 
 bool SkColorTypeIsAlwaysOpaque(SkColorType ct) {
@@ -83,6 +84,7 @@ bool SkColorTypeValidateAlphaType(SkColorType colorType, SkAlphaType alphaType,
             }
             break;
         case kGray_8_SkColorType:
+        case kRG_88_SkColorType:
         case kRGB_565_SkColorType:
         case kRGB_888x_SkColorType:
         case kRGB_101010x_SkColorType:

src/core/SkPixmap.cpp

@@ -100,6 +100,7 @@ float SkPixmap::getAlphaf(int x, int y) const {
         case kUnknown_SkColorType:
             return 0;
         case kGray_8_SkColorType:
+        case kRG_88_SkColorType:
         case kRGB_565_SkColorType:
         case kRGB_888x_SkColorType:
         case kRGB_101010x_SkColorType:
@@ -266,6 +267,12 @@ SkColor SkPixmap::getColor(int x, int y) const {
             SkPMColor c = SkPixel4444ToPixel32(value);
             return toColor(c);
         }
+        case kRG_88_SkColorType: {
+            uint16_t value = *this->addr16(x, y);
+            return (uint32_t)( ((value >>  0) & 0xff) ) << 16
+                 | (uint32_t)( ((value >>  8) & 0xff) ) <<  8
+                 | 0xff000000;
+        }
         case kRGB_888x_SkColorType: {
             uint32_t value = *this->addr32(x, y);
             return SkSwizzle_RB(value | 0xff000000);
@@ -359,6 +366,7 @@ bool SkPixmap::computeIsOpaque() const {
         } break;
         case kRGB_565_SkColorType:
         case kGray_8_SkColorType:
+        case kRG_88_SkColorType:
         case kRGB_888x_SkColorType:
         case kRGB_101010x_SkColorType:
             return true;

src/core/SkRasterPipeline.cpp

@@ -168,6 +168,7 @@ void SkRasterPipeline::append_load(SkColorType ct, const SkRasterPipeline_Memory
         case kAlpha_8_SkColorType:      this->append(load_a8,      ctx); break;
         case kRGB_565_SkColorType:      this->append(load_565,     ctx); break;
         case kARGB_4444_SkColorType:    this->append(load_4444,    ctx); break;
+        case kRG_88_SkColorType:        this->append(load_rg88,    ctx); break;
         case kRGBA_8888_SkColorType:    this->append(load_8888,    ctx); break;
         case kRGBA_1010102_SkColorType: this->append(load_1010102, ctx); break;
         case kRGBA_F16Norm_SkColorType:
@@ -199,6 +200,7 @@ void SkRasterPipeline::append_load_dst(SkColorType ct, const SkRasterPipeline_Me
         case kAlpha_8_SkColorType:      this->append(load_a8_dst,      ctx); break;
         case kRGB_565_SkColorType:      this->append(load_565_dst,     ctx); break;
         case kARGB_4444_SkColorType:    this->append(load_4444_dst,    ctx); break;
+        case kRG_88_SkColorType:        this->append(load_rg88_dst,    ctx); break;
         case kRGBA_8888_SkColorType:    this->append(load_8888_dst,    ctx); break;
         case kRGBA_1010102_SkColorType: this->append(load_1010102_dst, ctx); break;
         case kRGBA_F16Norm_SkColorType:
@@ -230,6 +232,7 @@ void SkRasterPipeline::append_store(SkColorType ct, const SkRasterPipeline_Memor
         case kAlpha_8_SkColorType:      this->append(store_a8,      ctx); break;
         case kRGB_565_SkColorType:      this->append(store_565,     ctx); break;
         case kARGB_4444_SkColorType:    this->append(store_4444,    ctx); break;
+        case kRG_88_SkColorType:        this->append(store_rg88,    ctx); break;
         case kRGBA_8888_SkColorType:    this->append(store_8888,    ctx); break;
         case kRGBA_1010102_SkColorType: this->append(store_1010102, ctx); break;
         case kRGBA_F16Norm_SkColorType:

src/core/SkRasterPipeline.h

@@ -53,7 +53,7 @@
     M(load_f32)    M(load_f32_dst)  M(store_f32)   M(gather_f32)   \
     M(load_rgf32)                   M(store_rgf32)                 \
     M(load_8888)   M(load_8888_dst) M(store_8888)  M(gather_8888)  \
-    M(load_rg88)                    M(store_rg88)                  \
+    M(load_rg88)   M(load_rg88_dst) M(store_rg88)  M(gather_rg88)  \
     M(load_a16)                     M(store_a16)                   \
     M(load_rg1616)                  M(store_rg1616)                \
     M(load_16161616)                M(store_16161616)              \

src/gpu/GrDataUtils.cpp

@@ -203,7 +203,7 @@ static bool fill_buffer_with_color(GrPixelConfig config, int width, int height,
             break;
         }
         case kRG_88_GrPixelConfig: {
-            uint16_t rg88 = (r << 8) | g;
+            uint16_t rg88 = (g << 8) | r;
 
             sk_memset16((uint16_t*) dest, rg88, width * height);
             break;

src/gpu/SkGpuDevice.cpp

@@ -86,8 +86,12 @@ sk_sp<SkGpuDevice> SkGpuDevice::Make(GrContext* context,
     if (!renderTargetContext || context->priv().abandoned()) {
         return nullptr;
     }
+
+    SkColorType ct = GrColorTypeToSkColorType(renderTargetContext->colorSpaceInfo().colorType());
+
     unsigned flags;
-    if (!CheckAlphaTypeAndGetFlags(nullptr, init, &flags)) {
+    if (!context->colorTypeSupportedAsSurface(ct) ||
+        !CheckAlphaTypeAndGetFlags(nullptr, init, &flags)) {
         return nullptr;
     }
     return sk_sp<SkGpuDevice>(new SkGpuDevice(context, std::move(renderTargetContext), flags));
@@ -98,7 +102,8 @@ sk_sp<SkGpuDevice> SkGpuDevice::Make(GrContext* context, SkBudgeted budgeted,
                                      GrSurfaceOrigin origin, const SkSurfaceProps* props,
                                      GrMipMapped mipMapped, InitContents init) {
     unsigned flags;
-    if (!CheckAlphaTypeAndGetFlags(&info, init, &flags)) {
+    if (!context->colorTypeSupportedAsSurface(info.colorType()) ||
+        !CheckAlphaTypeAndGetFlags(&info, init, &flags)) {
         return nullptr;
     }
 

src/gpu/SkGr.cpp

@@ -257,6 +257,8 @@ GrPixelConfig SkColorType2GrPixelConfig(const SkColorType type) {
             return kRGBA_half_GrPixelConfig;
         case kRGBA_F32_SkColorType:
             return kRGBA_float_GrPixelConfig;
+        case kRG_88_SkColorType:
+            return kRG_88_GrPixelConfig;
     }
     SkASSERT(0);    // shouldn't get here
     return kUnknown_GrPixelConfig;

src/image/SkSurface_Raster.cpp

@@ -42,6 +42,10 @@ bool SkSurfaceValidateRasterInfo(const SkImageInfo& info, size_t rowBytes) {
         return false;
     }
 
+    if (info.colorType() == kRG_88_SkColorType) {
+        return false;
+    }
+
     if (kIgnoreRowBytesValue == rowBytes) {
         return true;
     }

src/images/SkPngEncoder.cpp

@@ -315,6 +315,8 @@ static transform_scanline_proc choose_proc(const SkImageInfo& info) {
             return transform_scanline_101010x;
         case kAlpha_8_SkColorType:
             return transform_scanline_A8_to_GrayAlpha;
+        case kRG_88_SkColorType:
+            return nullptr;
     }
     SkASSERT(false);
     return nullptr;

src/opts/SkRasterPipeline_opts.h

@@ -1983,16 +1983,27 @@ STAGE(store_8888, const SkRasterPipeline_MemoryCtx* ctx) {
 }
 
 STAGE(load_rg88, const SkRasterPipeline_MemoryCtx* ctx) {
-    auto ptr = ptr_at_xy<const uint16_t>(ctx, dx,dy);
+    auto ptr = ptr_at_xy<const uint16_t>(ctx, dx, dy);
+    from_88(load<U16>(ptr, tail), &r, &g);
+    b = 0;
+    a = 1;
+}
+STAGE(load_rg88_dst, const SkRasterPipeline_MemoryCtx* ctx) {
+    auto ptr = ptr_at_xy<const uint16_t>(ctx, dx, dy);
+    from_88(load<U16>(ptr, tail), &dr, &dg);
+    db = 0;
+    da = 1;
+}
+STAGE(gather_rg88, const SkRasterPipeline_GatherCtx* ctx) {
+    const uint16_t* ptr;
+    U32 ix = ix_and_ptr(&ptr, ctx, r, g);
+    from_88(gather(ptr, ix), &r, &g);
     b = 0;
     a = 1;
-    from_88(load<U16>(ptr, tail), &r,&g);
 }
 STAGE(store_rg88, const SkRasterPipeline_MemoryCtx* ctx) {
-    auto ptr = ptr_at_xy<uint16_t>(ctx, dx,dy);
+    auto ptr = ptr_at_xy<uint16_t>(ctx, dx, dy);
-
+    U16 px = pack( to_unorm(r, 255) | to_unorm(g, 255) <<  8 );
-    U16 px = pack( to_unorm(r, 255)
-                 | to_unorm(g, 255) <<  8);
     store(ptr, px, tail);
 }
 
@@ -3604,13 +3615,25 @@ SI void store_88_(uint16_t* ptr, size_t tail, U16 r, U16 g) {
 }
 
 STAGE_PP(load_rg88, const SkRasterPipeline_MemoryCtx* ctx) {
+    load_88_(ptr_at_xy<const uint16_t>(ctx, dx, dy), tail, &r, &g);
     b = 0;
     a = 255;
-    load_88_(ptr_at_xy<const uint16_t>(ctx, dx,dy), tail, &r,&g);
+}
+STAGE_PP(load_rg88_dst, const SkRasterPipeline_MemoryCtx* ctx) {
+    load_88_(ptr_at_xy<const uint16_t>(ctx, dx, dy), tail, &dr, &dg);
+    db = 0;
+    da = 255;
 }
 STAGE_PP(store_rg88, const SkRasterPipeline_MemoryCtx* ctx) {
     store_88_(ptr_at_xy<uint16_t>(ctx, dx, dy), tail, r, g);
 }
+STAGE_GP(gather_rg88, const SkRasterPipeline_GatherCtx* ctx) {
+    const uint16_t* ptr;
+    U32 ix = ix_and_ptr(&ptr, ctx, x, y);
+    from_88(gather<U16>(ptr, ix), &r, &g);
+    b = 0;
+    a = 255;
+}
 
 // ~~~~~~ 8-bit memory loads and stores ~~~~~~ //
 

src/shaders/SkImageShader.cpp

@@ -423,6 +423,7 @@ bool SkImageShader::doStages(const SkStageRec& rec, SkImageStageUpdater* updater
             case kAlpha_8_SkColorType:      p->append(SkRasterPipeline::gather_a8,      ctx); break;
             case kRGB_565_SkColorType:      p->append(SkRasterPipeline::gather_565,     ctx); break;
             case kARGB_4444_SkColorType:    p->append(SkRasterPipeline::gather_4444,    ctx); break;
+            case kRG_88_SkColorType:        p->append(SkRasterPipeline::gather_rg88,    ctx); break;
             case kRGBA_8888_SkColorType:    p->append(SkRasterPipeline::gather_8888,    ctx); break;
             case kRGBA_1010102_SkColorType: p->append(SkRasterPipeline::gather_1010102, ctx); break;
             case kRGBA_F16Norm_SkColorType:

tests/BackendAllocationTest.cpp

@@ -47,7 +47,7 @@ void test_wrapping(GrContext* context, skiatest::Reporter* reporter,
         return;
     }
 
-    if (GrRenderable::kYes == renderable) {
+    if (GrRenderable::kYes == renderable && context->colorTypeSupportedAsSurface(skColorType)) {
         sk_sp<SkSurface> surf = SkSurface::MakeFromBackendTexture(context,
                                                                   backendTex,
                                                                   kTopLeft_GrSurfaceOrigin,
@@ -176,7 +176,7 @@ void test_color_init(GrContext* context, skiatest::Reporter* reporter,
     SkAssertResult(actual.tryAlloc(ii));
     actual.erase(SkColors::kTransparent);
 
-    if (GrRenderable::kYes == renderable) {
+    if (GrRenderable::kYes == renderable && context->colorTypeSupportedAsSurface(skColorType)) {
         sk_sp<SkSurface> surf = SkSurface::MakeFromBackendTexture(context,
                                                                   backendTex,
                                                                   kTopLeft_GrSurfaceOrigin,
@@ -426,6 +426,7 @@ DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ColorTypeBackendAllocationTest, reporter, ctx
         { kRGBA_F16Norm_SkColorType, kRGBA_half_Clamped_GrPixelConfig, SkColors::kLtGray   },
         { kRGBA_F16_SkColorType,     kRGBA_half_GrPixelConfig,         SkColors::kYellow   },
         { kRGBA_F32_SkColorType,     kRGBA_float_GrPixelConfig,        SkColors::kGray     },
+        { kRG_88_SkColorType,        kRG_88_GrPixelConfig,             SkColors::kRed      },
     };
 
     GR_STATIC_ASSERT(kLastEnum_SkColorType == SK_ARRAY_COUNT(combinations));
@@ -571,7 +572,7 @@ DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(GLBackendAllocationTest, reporter, ctxInfo) {
         { GrColorType::kRGBA_F16_Clamped, GR_GL_RGBA16F,              SkColors::kLtGray    },
         { GrColorType::kRGBA_F16,         GR_GL_RGBA16F,              SkColors::kYellow    },
 
-        { GrColorType::kRG_88,            GR_GL_RG8,                  { 0.5f, 0.5f, 0, 0 } },
+        { GrColorType::kRG_88,            GR_GL_RG8,                  { 1, 0.5f, 0, 1 }    },
         { GrColorType::kAlpha_F16,        GR_GL_R16F,                 { 1.0f, 0, 0, 0.5f } },
         { GrColorType::kAlpha_F16,        GR_GL_LUMINANCE16F,         kGrayCol             },
 
@@ -707,7 +708,7 @@ DEF_GPUTEST_FOR_VULKAN_CONTEXT(VkBackendAllocationTest, reporter, ctxInfo) {
         { GrColorType::kRGBA_F16,         VK_FORMAT_R16G16B16A16_SFLOAT,      SkColors::kYellow   },
 
         // These backend formats don't have SkColorType equivalents
-        { GrColorType::kRG_88,            VK_FORMAT_R8G8_UNORM,               { 0.5f, 0.5f, 0, 0 }},
+        { GrColorType::kRG_88,            VK_FORMAT_R8G8_UNORM,               { 1, 0.5f, 0, 1 }   },
         { GrColorType::kAlpha_F16,        VK_FORMAT_R16_SFLOAT,               { 1.0f, 0, 0, 0.5f }},
 
         { GrColorType::kR_16,             VK_FORMAT_R16_UNORM,                SkColors::kRed      },

tests/BitmapTest.cpp

@@ -178,20 +178,9 @@ DEF_TEST(Bitmap_eraseColor_Premul, r) {
 
 // Test that SkBitmap::ComputeOpaque() is correct for various colortypes.
 DEF_TEST(Bitmap_compute_is_opaque, r) {
-    SkColorType colorTypes[] = {
+
-        kAlpha_8_SkColorType,
+    for (int i = 1; i <= kLastEnum_SkColorType; ++i) {
-        kRGB_565_SkColorType,
+        SkColorType ct = (SkColorType) i;
-        kARGB_4444_SkColorType,
-        kRGBA_8888_SkColorType,
-        kRGB_888x_SkColorType,
-        kBGRA_8888_SkColorType,
-        kRGBA_1010102_SkColorType,
-        kRGB_101010x_SkColorType,
-        kGray_8_SkColorType,
-        kRGBA_F16_SkColorType,
-        kRGBA_F32_SkColorType,
-    };
-    for (auto ct : colorTypes) {
         SkBitmap bm;
         SkAlphaType at = SkColorTypeIsAlwaysOpaque(ct) ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
         bm.allocPixels(SkImageInfo::Make(13, 17, ct, at));
@@ -342,6 +331,7 @@ DEF_TEST(getalphaf, reporter) {
     } recs[] = {
         { kRGB_565_SkColorType,     opaque },
         { kGray_8_SkColorType,      opaque },
+        { kRG_88_SkColorType,       opaque },
         { kRGB_888x_SkColorType,    opaque },
         { kRGB_101010x_SkColorType, opaque },
 

tests/DeferredDisplayListTest.cpp

@@ -144,6 +144,10 @@ public:
     SkSurfaceCharacterization createCharacterization(GrContext* context) const {
         size_t maxResourceBytes = context->getResourceCacheLimit();
 
+        if (!context->colorTypeSupportedAsSurface(fColorType)) {
+            return SkSurfaceCharacterization();
+        }
+
         // Note that Ganesh doesn't make use of the SkImageInfo's alphaType
         SkImageInfo ii = SkImageInfo::Make(fWidth, fHeight, fColorType,
                                            kPremul_SkAlphaType, fColorSpace);

tests/ExtendedSkColorTypeTests.cpp

@@ -0,0 +1,294 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "include/core/SkImage.h"
+#include "include/core/SkSurface.h"
+#include "src/core/SkAutoPixmapStorage.h"
+#include "src/gpu/GrContextPriv.h"
+
+#include "tests/Test.h"
+#include "tests/TestUtils.h"
+
+static constexpr int kSize = 32;
+
+static SkColor4f get_trans_black_expected_color(SkColorTypeComponentFlag components) {
+    float a = 0;
+    if (!(components & kAlpha_SkColorTypeComponentFlag)) {
+        a = 1;
+    }
+
+    return { 0, 0, 0, a };
+}
+
+static SkColor4f get_opaque_white_expected_color(SkColorTypeComponentFlag components) {
+
+    if (components & kGray_SkColorTypeComponentFlag) {
+        return { 1, 1, 1, 1 };
+    }
+
+    float r = 1, g = 1, b = 1;
+    if (!(components & kRed_SkColorTypeComponentFlag)) {
+        r = 0;
+    }
+    if (!(components & kGreen_SkColorTypeComponentFlag)) {
+        g = 0;
+    }
+    if (!(components & kBlue_SkColorTypeComponentFlag)) {
+        b = 0;
+    }
+
+    return { r, g, b, 1.0f };
+}
+
+struct TestCase {
+    SkColorType              fColorType;
+    SkAlphaType              fAlphaType;
+    SkColorTypeComponentFlag fComponents;
+    bool                     fCanMakeSurfaces;
+};
+
+static const TestCase gTests[] = {
+    { kAlpha_8_SkColorType,      kPremul_SkAlphaType, kAlpha_SkColorTypeComponentFlag, true  },
+    { kRGB_565_SkColorType,      kOpaque_SkAlphaType, kRGB_SkColorTypeComponentFlags,  true  },
+    { kARGB_4444_SkColorType,    kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRGBA_8888_SkColorType,    kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRGB_888x_SkColorType,     kOpaque_SkAlphaType, kRGB_SkColorTypeComponentFlags,  true  },
+    { kBGRA_8888_SkColorType,    kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRGBA_1010102_SkColorType, kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRGB_101010x_SkColorType,  kOpaque_SkAlphaType, kRGB_SkColorTypeComponentFlags,  true  },
+    { kGray_8_SkColorType,       kOpaque_SkAlphaType, kGray_SkColorTypeComponentFlag,  true  },
+    { kRGBA_F16Norm_SkColorType, kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRGBA_F16_SkColorType,     kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRGBA_F32_SkColorType,     kPremul_SkAlphaType, kRGBA_SkColorTypeComponentFlags, true  },
+    { kRG_88_SkColorType,        kOpaque_SkAlphaType, kRG_SkColorTypeComponentFlags,   false }
+};
+
+static void raster_tests(skiatest::Reporter* reporter, const TestCase& test) {
+
+    const SkImageInfo nativeII = SkImageInfo::Make(kSize, kSize, test.fColorType, test.fAlphaType);
+    const SkImageInfo f32Unpremul = SkImageInfo::Make(kSize, kSize, kRGBA_F32_SkColorType,
+                                                      kUnpremul_SkAlphaType);
+
+    uint32_t actualComponents = SkColorTypeComponentFlags(test.fColorType);
+    REPORTER_ASSERT(reporter, test.fComponents == actualComponents);
+
+    // Not all colorTypes can be drawn to
+    {
+        auto s = SkSurface::MakeRaster(nativeII);
+        REPORTER_ASSERT(reporter, SkToBool(s) == test.fCanMakeSurfaces);
+    }
+
+    // opaque formats should make transparent black become opaque
+    {
+        SkAutoPixmapStorage pm;
+        pm.alloc(nativeII);
+        pm.erase(SkColors::kTransparent);
+        SkColor actual = pm.getColor(0, 0);
+        SkColor4f expected = get_trans_black_expected_color(test.fComponents);
+        REPORTER_ASSERT(reporter, expected.toSkColor() == actual);
+    }
+
+    // unused channels should drop out
+    {
+        SkAutoPixmapStorage pm;
+        pm.alloc(nativeII);
+        pm.erase(SkColors::kWhite);
+        SkColor actual = pm.getColor(0, 0);
+        SkColor4f expected = get_opaque_white_expected_color(test.fComponents);
+        REPORTER_ASSERT(reporter, expected.toSkColor() == actual);
+    }
+
+    // Reading back from an image to the same colorType should always work
+    {
+        SkAutoPixmapStorage srcPM;
+        srcPM.alloc(nativeII);
+        srcPM.erase(SkColors::kWhite);
+        auto i = SkImage::MakeFromRaster(srcPM, nullptr, nullptr);
+        REPORTER_ASSERT(reporter, SkToBool(i));
+
+        SkAutoPixmapStorage readbackPM;
+        readbackPM.alloc(nativeII);
+        readbackPM.erase(SkColors::kTransparent);
+
+        REPORTER_ASSERT(reporter, i->readPixels(readbackPM, 0, 0));
+
+        SkColor expected = srcPM.getColor(0, 0);
+        SkColor actual = readbackPM.getColor(0, 0);
+        REPORTER_ASSERT(reporter, expected == actual);
+    }
+
+    // Rendering to an F32 surface should always work
+    {
+        SkAutoPixmapStorage srcPM;
+        srcPM.alloc(nativeII);
+        srcPM.erase(SkColors::kWhite);
+        auto i = SkImage::MakeFromRaster(srcPM, nullptr, nullptr);
+        REPORTER_ASSERT(reporter, SkToBool(i));
+
+        auto s = SkSurface::MakeRaster(f32Unpremul);
+        REPORTER_ASSERT(reporter, SkToBool(s));
+
+        {
+            auto c = s->getCanvas();
+            c->drawImage(i, 0, 0);
+        }
+
+        SkAutoPixmapStorage readbackPM;
+        readbackPM.alloc(f32Unpremul);
+        readbackPM.erase(SkColors::kTransparent);
+
+        REPORTER_ASSERT(reporter, i->readPixels(readbackPM, 0, 0));
+
+        SkColor expected = srcPM.getColor(0, 0);
+        SkColor actual = readbackPM.getColor(0, 0);
+        REPORTER_ASSERT(reporter, expected == actual);
+    }
+}
+
+static void compare_pixmaps(skiatest::Reporter* reporter,
+                            const SkPixmap& expected, const SkPixmap& actual,
+                            SkColorType nativeCT, const char* label) {
+    const float tols[4] = {0.0f, 0.0f, 0.0f, 0};
+
+    auto error = std::function<ComparePixmapsErrorReporter>(
+        [reporter, nativeCT, label](int x, int y, const float diffs[4]) {
+            SkASSERT(x >= 0 && y >= 0);
+            ERRORF(reporter, "%d %s - mismatch at %d, %d (%f, %f, %f %f)",
+                   nativeCT, label, x, y,
+                   diffs[0], diffs[1], diffs[2], diffs[3]);
+        });
+
+    compare_pixels(expected, actual, tols, error);
+}
+
+static void gpu_tests(GrContext* context, skiatest::Reporter* reporter, const TestCase& test) {
+
+    const SkImageInfo nativeII = SkImageInfo::Make(kSize, kSize, test.fColorType, test.fAlphaType);
+    const SkImageInfo f32Unpremul = SkImageInfo::Make(kSize, kSize, kRGBA_F32_SkColorType,
+                                                      kUnpremul_SkAlphaType);
+
+    // We had better not be able to render to prohibited colorTypes
+    if (!test.fCanMakeSurfaces) {
+        auto s = SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, nativeII);
+        REPORTER_ASSERT(reporter, !SkToBool(s));
+    }
+
+    if (!context->colorTypeSupportedAsImage(test.fColorType)) {
+        return;
+    }
+
+    SkAutoPixmapStorage nativeExpected;
+    nativeExpected.alloc(nativeII);
+    nativeExpected.erase(SkColors::kWhite);
+
+    for (bool fullInit : { false, true }) {
+        GrBackendTexture backendTex;
+
+        if (fullInit) {
+            backendTex = context->priv().createBackendTexture(&nativeExpected, 1,
+                                                              GrRenderable::kNo,
+                                                              GrProtected::kNo);
+        } else {
+            backendTex = context->createBackendTexture(kSize, kSize, test.fColorType,
+                                                       SkColors::kWhite, GrMipMapped::kNo,
+                                                       GrRenderable::kNo, GrProtected::kNo);
+        }
+        REPORTER_ASSERT(reporter, backendTex.isValid());
+
+        auto img = SkImage::MakeFromTexture(context, backendTex, kTopLeft_GrSurfaceOrigin,
+                                            test.fColorType, test.fAlphaType, nullptr);
+        REPORTER_ASSERT(reporter, SkToBool(img));
+
+        {
+            SkAutoPixmapStorage nativeActual;
+            nativeActual.alloc(nativeII);
+            nativeActual.erase(SkColors::kTransparent);
+
+            if (img->readPixels(nativeActual, 0, 0)) {
+                compare_pixmaps(reporter, nativeExpected, nativeActual,
+                                test.fColorType, "SkImage::readPixels to native CT");
+            }
+
+            // SkSurface::readPixels with the same colorType as the source pixels round trips
+            // (when allowed)
+            if (context->colorTypeSupportedAsSurface(test.fColorType)) {
+                auto s = SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, nativeII);
+                REPORTER_ASSERT(reporter, SkToBool(s));
+
+                {
+                    SkCanvas* c = s->getCanvas();
+                    c->drawImage(img, 0, 0);
+                }
+
+                nativeActual.erase(SkColors::kTransparent);
+                REPORTER_ASSERT(reporter, s->readPixels(nativeActual, 0, 0));
+
+                compare_pixmaps(reporter, nativeExpected, nativeActual,
+                                test.fColorType, "SkSurface::readPixels to native CT");
+            }
+        }
+
+        {
+            SkAutoPixmapStorage f32Expected;
+            f32Expected.alloc(f32Unpremul);
+            f32Expected.erase(get_opaque_white_expected_color(test.fComponents));
+
+            // read back to F32 if possible
+            {
+                SkAutoPixmapStorage f32Actual;
+                f32Actual.alloc(f32Unpremul);
+                f32Actual.erase(SkColors::kTransparent);
+                if (img->readPixels(f32Actual, 0, 0)) {
+                    compare_pixmaps(reporter, f32Expected, f32Actual,
+                                    test.fColorType, "SkImage::readPixels to F32");
+                }
+            }
+
+            // drawing a native SkImage works appropriately (as assessed by reading back from an
+            // RGBA8 surface to an F32 pixmap)
+            {
+                const SkImageInfo rgba8888Premul = SkImageInfo::Make(kSize, kSize,
+                                                                     kRGBA_8888_SkColorType,
+                                                                     kPremul_SkAlphaType);
+
+                auto s = SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, rgba8888Premul);
+                REPORTER_ASSERT(reporter, SkToBool(s));
+
+                {
+                    SkCanvas* c = s->getCanvas();
+                    c->drawImage(img, 0, 0);
+                }
+
+                SkAutoPixmapStorage f32Actual;
+                f32Actual.alloc(f32Unpremul);
+                f32Actual.erase(SkColors::kTransparent);
+                REPORTER_ASSERT(reporter, s->readPixels(f32Actual, 0, 0));
+
+                compare_pixmaps(reporter, f32Expected, f32Actual,
+                                test.fColorType, "SkSurface::drawn to RGBA8888");
+            }
+        }
+
+        img.reset();
+        context->flush();
+        context->deleteBackendTexture(backendTex);
+    }
+}
+
+DEF_TEST(ExtendedSkColorTypeTests_raster, reporter) {
+    for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); ++i) {
+        raster_tests(reporter, gTests[i]);
+    }
+}
+
+DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ExtendedSkColorTypeTests_gpu, reporter, ctxInfo) {
+    GrContext* context = ctxInfo.grContext();
+
+    for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); ++i) {
+        gpu_tests(context, reporter, gTests[i]);
+    }
+}

tests/MtlBackendAllocationTest.mm

@@ -63,7 +63,7 @@ DEF_GPUTEST_FOR_METAL_CONTEXT(MtlBackendAllocationTest, reporter, ctxInfo) {
         { GrColorType::kRGBA_F16_Clamped, MTLPixelFormatRGBA16Float,     SkColors::kLtGray    },
         { GrColorType::kRGBA_F16,         MTLPixelFormatRGBA16Float,     SkColors::kYellow    },
 
-        { GrColorType::kRG_88,            MTLPixelFormatRG8Unorm,        { 0.5f, 0.5f, 0, 0 } },
+        { GrColorType::kRG_88,            MTLPixelFormatRG8Unorm,        { 0.5f, 0.5f, 0, 1 } },
         { GrColorType::kAlpha_F16,        MTLPixelFormatR16Float,        { 1.0f, 0, 0, 0.5f } },
 
         { GrColorType::kR_16,             MTLPixelFormatR16Unorm,        SkColors::kRed       },

tests/ReadPixelsTest.cpp

@@ -626,6 +626,7 @@ static int min_rgb_channel_bits(SkColorType ct) {
         case kAlpha_8_SkColorType:      return 8;
         case kRGB_565_SkColorType:      return 5;
         case kARGB_4444_SkColorType:    return 4;
+        case kRG_88_SkColorType:        return 8;
         case kRGBA_8888_SkColorType:    return 8;
         case kRGB_888x_SkColorType:     return 8;
         case kBGRA_8888_SkColorType:    return 8;

tools/DDLPromiseImageHelper.cpp

@@ -55,43 +55,23 @@ sk_sp<SkData> DDLPromiseImageHelper::deflateSKP(const SkPicture* inputPicture) {
     return inputPicture->serialize(&procs);
 }
 
-// needed until we have SkRG_88_ColorType;
 static GrBackendTexture create_yuva_texture(GrContext* context, const SkPixmap& pm,
                                             const SkYUVAIndex yuvaIndices[4], int texIndex) {
     SkASSERT(texIndex >= 0 && texIndex <= 3);
+
+#ifdef SK_DEBUG
     int channelCount = 0;
     for (int i = 0; i < SkYUVAIndex::kIndexCount; ++i) {
         if (yuvaIndices[i].fIndex == texIndex) {
             ++channelCount;
         }
     }
-    // Need to create an RG texture for two-channel planes
-    GrBackendTexture tex;
     if (2 == channelCount) {
-        const GrCaps* caps = context->priv().caps();
+        SkASSERT(kRG_88_SkColorType == pm.colorType());
-        GrGpu* gpu = context->priv().getGpu();
-
-        SkASSERT(kRGBA_8888_SkColorType == pm.colorType());
-        SkAutoTMalloc<char> pixels(2 * pm.width()*pm.height());
-        char* currPixel = pixels;
-        for (int y = 0; y < pm.height(); ++y) {
-            for (int x = 0; x < pm.width(); ++x) {
-                SkColor color = pm.getColor(x, y);
-                currPixel[0] = SkColorGetR(color);
-                currPixel[1] = SkColorGetG(color);
-                currPixel += 2;
-            }
-        }
-
-        GrBackendFormat format = caps->getDefaultBackendFormat(GrColorType::kRG_88,
-                                                               GrRenderable::kNo);
-        tex = gpu->createBackendTexture(pm.width(), pm.height(), format,
-                                        GrMipMapped::kNo, GrRenderable::kNo,
-                                        pixels, 2 * pm.width(), nullptr, GrProtected::kNo);
-    } else {
-        tex = context->priv().createBackendTexture(&pm, 1, GrRenderable::kNo, GrProtected::kNo);
     }
-    return tex;
+#endif
+
+    return context->priv().createBackendTexture(&pm, 1, GrRenderable::kNo, GrProtected::kNo);
 }
 
 void DDLPromiseImageHelper::uploadAllToGPU(GrContext* context) {
@@ -281,7 +261,7 @@ int DDLPromiseImageHelper::addImage(SkImage* image) {
         newImageInfo.setYUVData(std::move(yuvData), yuvaIndices, yuvColorSpace);
 
         // determine colortypes from index data
-        // for testing we only ever use A8 or RGBA8888
+        // for testing we only ever use A8, RG_88
         SkColorType colorTypes[SkYUVASizeInfo::kMaxCount] = {
             kUnknown_SkColorType, kUnknown_SkColorType,
             kUnknown_SkColorType, kUnknown_SkColorType
@@ -295,7 +275,7 @@ int DDLPromiseImageHelper::addImage(SkImage* image) {
             if (kUnknown_SkColorType == colorTypes[texIdx]) {
                 colorTypes[texIdx] = kAlpha_8_SkColorType;
             } else {
-                colorTypes[texIdx] = kRGBA_8888_SkColorType;
+                colorTypes[texIdx] = kRG_88_SkColorType;
             }
         }
 

tools/HashAndEncode.cpp

@@ -39,6 +39,7 @@ HashAndEncode::HashAndEncode(const SkBitmap& bitmap) : fSize(bitmap.info().dimen
                                         srcAlpha = skcms_AlphaFormat_Opaque;       break;
         case kRGB_101010x_SkColorType:  srcFmt = skcms_PixelFormat_RGBA_1010102;
                                         srcAlpha = skcms_AlphaFormat_Opaque;       break;
+        case kRG_88_SkColorType:        return;
     }
 
     skcms_ICCProfile srcProfile = *skcms_sRGB_profile();

tools/ToolUtils.cpp

@@ -61,6 +61,7 @@ const char* colortype_name(SkColorType ct) {
         case kRGBA_F16Norm_SkColorType: return "RGBA_F16Norm";
         case kRGBA_F16_SkColorType:     return "RGBA_F16";
         case kRGBA_F32_SkColorType:     return "RGBA_F32";
+        case kRG_88_SkColorType:        return "RG_88";
     }
     SkASSERT(false);
     return "unexpected colortype";
@@ -81,6 +82,7 @@ const char* colortype_depth(SkColorType ct) {
         case kRGBA_F16Norm_SkColorType: return "F16Norm";  // TODO: "F16"?
         case kRGBA_F16_SkColorType:     return "F16";
         case kRGBA_F32_SkColorType:     return "F32";
+        case kRG_88_SkColorType:        return "88";
     }
     SkASSERT(false);
     return "unexpected colortype";