Add GM configs that test rendering to a GL backend texture and render target

This also adds GrGpu::create/deleteTestingOnlyBackendRenderTarget. Implemented in GL only for now.

Change-Id: I9e5fdc953c4a249959af89e08332f520cefe9d90
Reviewed-on: https://skia-review.googlesource.com/113305
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/gpu/mtl/GrMtlGpu.h b/src/gpu/mtl/GrMtlGpu.h
index 9907e95d29..38b4e6303c 100644
--- a/src/gpu/mtl/GrMtlGpu.h
+++ b/src/gpu/mtl/GrMtlGpu.h
@@ -137,6 +137,7 @@ private:
 
     void clearStencil(GrRenderTarget* target, int clearValue) override  {}
 
+#if GR_TEST_UTILS
     GrBackendTexture createTestingOnlyBackendTexture(void* pixels, int w, int h,
                                                      GrPixelConfig config, bool isRT,
                                                      GrMipMapped) override {
@@ -145,7 +146,14 @@ private:
     bool isTestingOnlyBackendTexture(const GrBackendTexture&) const override { return false; }
     void deleteTestingOnlyBackendTexture(GrBackendTexture*) override {}
 
+    GrBackendRenderTarget createTestingOnlyBackendRenderTarget(int w, int h, GrColorType,
+                                                               GrSRGBEncoded) override {
+        return {};
+    }
+    void deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget&) override {}
+
     void testingOnly_flushGpuAndSync() override {}
+#endif
 
     sk_sp<GrMtlCaps> fMtlCaps;