Revert "Workaround Adreno driver issue with stencil clears."

This reverts commit 4e8c581f2aa911bf49f97a246cc26134da292a8c.

Reason for revert: breaks Google3 roll

Original change's description:
> Workaround Adreno driver issue with stencil clears.
> 
> This also removes the "debug wire rect" which was not used and not implemented for Vulkan.
> 
> Also some declared but not implemented methods are removed from GrGLGpu.
> 
> Bug: skia:5587
> 
> Change-Id: I750051e90e6cfbfad6a6fe20792226182f698bcf
> Reviewed-on: https://skia-review.googlesource.com/18639
> Reviewed-by: Chris Dalton <csmartdalton@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,csmartdalton@google.com
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:5587

Change-Id: I65aa16b3f8c70cdef56ff16e16304ba09604c475
Reviewed-on: https://skia-review.googlesource.com/18924
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>

1 files changed, 14 insertions, 4 deletions

diff --git a/src/gpu/gl/GrGLGpu.h b/src/gpu/gl/GrGLGpu.h
index 1785eae143..770c357c5f 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -162,6 +162,8 @@ public:
 
     void resetShaderCacheForTesting() const override;
 
+    void drawDebugWireRect(GrRenderTarget*, const SkIRect&, GrColor) override;
+
     GrFence SK_WARN_UNUSED_RESULT insertFence() override;
     bool waitFence(GrFence, uint64_t timeout) override;
     void deleteFence(GrFence) const override;
@@ -294,7 +296,6 @@ private:
                                       const SkIRect& srcRect,
                                       const SkIPoint& dstPoint);
     bool generateMipmap(GrGLTexture* texture, bool gammaCorrect);
-    void clearStencilClipAsDraw(const GrFixedClip&, bool insideStencilMask, GrRenderTarget*);
 
     static bool BlendCoeffReferencesConstant(GrBlendCoeff coeff);
 
@@ -348,6 +349,11 @@ private:
     void flushWindowRectangles(const GrWindowRectsState&, const GrGLRenderTarget*);
     void disableWindowRectangles();
 
+    void initFSAASupport();
+
+    // determines valid stencil formats
+    void initStencilFormats();
+
     // sets a texture unit to use for texture operations other than binding a texture to a program.
     // ensures that such operations don't negatively interact with tracking bound textures.
     void setScratchTextureUnit();
@@ -401,7 +407,7 @@ private:
 
     bool createCopyProgram(GrTexture* srcTexture);
     bool createMipmapProgram(int progIdx);
-    bool createStencilClipClearProgram();
+    bool createWireRectProgram();
 
     // GL program-related state
     ProgramCache*               fProgramCache;
@@ -614,8 +620,12 @@ private:
     }                                       fMipmapPrograms[4];
     sk_sp<GrGLBuffer>                       fMipmapProgramArrayBuffer;
 
-    GrGLuint                                fStencilClipClearProgram;
-    sk_sp<GrGLBuffer>                       fStencilClipClearArrayBuffer;
+    struct {
+        GrGLuint    fProgram;
+        GrGLint     fColorUniform;
+        GrGLint     fRectUniform;
+    }                                       fWireRectProgram;
+    sk_sp<GrGLBuffer>                       fWireRectArrayBuffer;
 
     static int TextureToCopyProgramIdx(GrTexture* texture) {
         switch (texture->texturePriv().samplerType()) {