Reland "Add driver bug workarounds to GrCaps"

This is a reland of 328490c6a1

Original change's description:
> Add driver bug workarounds to GrCaps
> 
> This moves GrDriverBugWorkarounds to include so that it can be included
> by GrCaps.  This also makes GrContextOptions a nearly empty class in
> the case of !SK_SUPPORT_GPU so that non-gpu builds don't need to build
> in GrDriverBugWorkarounds.cpp.
> 
> Bug: chromium: 829614
> Change-Id: Iedf73677fd09e9a487cfe618a696fd4b25c8703d
> Reviewed-on: https://skia-review.googlesource.com/126581
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Adrienne Walker <enne@chromium.org>

Bug: chromium: 829614
Change-Id: I7b539f99caa3032c8c595dd5068dc3b179747ccd
Reviewed-on: https://skia-review.googlesource.com/127304
Commit-Queue: Adrienne Walker <enne@chromium.org>
Reviewed-by: Brian Salomon <bsalomon@google.com>

BUILD.gn

@@ -839,7 +839,7 @@ if (skia_enable_gpu && skia_generate_workarounds) {
 
     # see comments in skia_compile_processors about out dir path shenanigans.
     output_file =
-        rebase_path("src/gpu/GrDriverBugWorkaroundsAutogen.h", root_out_dir)
+        rebase_path("include/gpu/GrDriverBugWorkaroundsAutogen.h", root_out_dir)
 
     outputs = [
       "$root_out_dir/$output_file",

dm/DMSrcSink.cpp

@@ -1608,9 +1608,11 @@ Error GPUThreadTestingSink::draw(const Src& src, SkBitmap* dst, SkWStream* wStre
     // Also, force us to only use the software path renderer, so we really stress-test the threaded
     // version of that code.
     GrContextOptions contextOptions = this->baseContextOptions();
+#if SK_SUPPORT_GPU
     contextOptions.fGpuPathRenderers = GpuPathRenderers::kNone;
-
     contextOptions.fExecutor = fExecutor.get();
+#endif
+
     Error err = this->onDraw(src, dst, wStream, log, contextOptions);
     if (!err.isEmpty() || !dst) {
         return err;
@@ -1619,7 +1621,9 @@ Error GPUThreadTestingSink::draw(const Src& src, SkBitmap* dst, SkWStream* wStre
     SkBitmap reference;
     SkString refLog;
     SkDynamicMemoryWStream refStream;
+#if SK_SUPPORT_GPU
     contextOptions.fExecutor = nullptr;
+#endif
     Error refErr = this->onDraw(src, &reference, &refStream, &refLog, contextOptions);
     if (!refErr.isEmpty()) {
         return refErr;

gn/gpu.gni

@@ -14,6 +14,7 @@ skia_gpu_sources = [
   "$_include/gpu/GrConfig.h",
   "$_include/gpu/GrContextOptions.h",
   "$_include/gpu/GrContext.h",
+  "$_include/gpu/GrDriverBugWorkarounds.h",
   "$_include/gpu/GrGpuResource.h",
   "$_include/gpu/GrRenderTarget.h",
   "$_include/gpu/GrResourceKey.h",
@@ -87,7 +88,6 @@ skia_gpu_sources = [
   "$_src/gpu/GrDrawOpTest.cpp",
   "$_src/gpu/GrDrawOpTest.h",
   "$_src/gpu/GrDriverBugWorkarounds.cpp",
-  "$_src/gpu/GrDriverBugWorkarounds.h",
   "$_src/gpu/GrFixedClip.cpp",
   "$_src/gpu/GrFixedClip.h",
   "$_src/gpu/GrFragmentProcessor.cpp",

include/gpu/GrContextOptions.h

@@ -12,11 +12,13 @@
 #include "SkTypes.h"
 #include "GrTypes.h"
 #include "../private/GrTypesPriv.h"
+#include "GrDriverBugWorkarounds.h"
 
 #include <vector>
 
 class SkExecutor;
 
+#if SK_SUPPORT_GPU
 struct GrContextOptions {
     enum class Enable {
         /** Forces an option to be disabled. */
@@ -239,6 +241,13 @@ struct GrContextOptions {
      */
     Enable fDistanceFieldGlyphVerticesAlwaysHaveW = Enable::kDefault;
 #endif
+
+    GrDriverBugWorkarounds fDriverBugWorkarounds;
 };
+#else
+struct GrContextOptions {
+    struct PersistentCache {};
+};
+#endif
 
 #endif

include/gpu/GrDriverBugWorkarounds.h

@@ -19,6 +19,8 @@
 #include "GrDriverBugWorkaroundsAutogen.h"
 #endif
 
+#include "SkTypes.h"
+
 #include <stdint.h>
 #include <vector>
 
@@ -29,11 +31,16 @@ enum GrDriverBugWorkaroundType {
   NUMBER_OF_GPU_DRIVER_BUG_WORKAROUND_TYPES
 };
 
-class GrDriverBugWorkarounds {
+class SK_API GrDriverBugWorkarounds {
  public:
   GrDriverBugWorkarounds();
   explicit GrDriverBugWorkarounds(const std::vector<int32_t>& workarounds);
 
+  GrDriverBugWorkarounds& operator=(const GrDriverBugWorkarounds&) = default;
+
+  // Turn on any workarounds listed in |workarounds| (but don't turn any off).
+  void applyOverrides(const GrDriverBugWorkarounds& workarounds);
+
   ~GrDriverBugWorkarounds();
 
 #define GPU_OP(type, name) bool name = false;

src/gpu/GrCaps.cpp

@@ -94,6 +94,8 @@ GrCaps::GrCaps(const GrContextOptions& options) {
     fAvoidStencilBuffers = false;
 
     fPreferVRAMUseOverFlushes = true;
+
+    fDriverBugWorkarounds = options.fDriverBugWorkarounds;
 }
 
 void GrCaps::applyOptionsOverrides(const GrContextOptions& options) {
@@ -123,6 +125,8 @@ void GrCaps::applyOptionsOverrides(const GrContextOptions& options) {
         fMaxWindowRectangles = GrWindowRectangles::kMaxWindows;
     }
     fAvoidStencilBuffers = options.fAvoidStencilBuffers;
+
+    fDriverBugWorkarounds.applyOverrides(options.fDriverBugWorkarounds);
 }
 
 static SkString map_flags_to_string(uint32_t flags) {

src/gpu/GrCaps.h

@@ -10,6 +10,7 @@
 
 #include "../private/GrTypesPriv.h"
 #include "GrBlend.h"
+#include "GrDriverBugWorkarounds.h"
 #include "GrShaderCaps.h"
 #include "SkImageInfo.h"
 #include "SkRefCnt.h"
@@ -343,6 +344,8 @@ private:
     bool fSuppressPrints : 1;
     bool fWireframeMode  : 1;
 
+    GrDriverBugWorkarounds fDriverBugWorkarounds;
+
     typedef SkRefCnt INHERITED;
 };
 

src/gpu/GrDriverBugWorkarounds.cpp

@@ -29,4 +29,13 @@ GrDriverBugWorkarounds::GrDriverBugWorkarounds(
     }
 }
 
+void GrDriverBugWorkarounds::applyOverrides(
+        const GrDriverBugWorkarounds& workarounds) {
+#define GPU_OP(type, name) \
+    name |= workarounds.name;
+
+    GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP)
+#undef GPU_OP
+}
+
 GrDriverBugWorkarounds::~GrDriverBugWorkarounds() = default;