Revert "Revert "Revert "Switched highp float to highfloat and mediump float to half."""

This reverts commit 05d5a13fea6246648de7e41358ed338d53c85ea2.

Reason for revert: looks like it broke filterfastbounds

Original change's description:
> Revert "Revert "Switched highp float to highfloat and mediump float to half.""
> 
> This reverts commit 1d816b92bb7cf2258007f3f74ffd143b89f25d01.
> 
> Bug: skia:
> Change-Id: I388b5e5e9bf619db48297a80c9a80c039f26c9f1
> Reviewed-on: https://skia-review.googlesource.com/46464
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

TBR=bsalomon@google.com,ethannicholas@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: skia:
Change-Id: Iddf6aef2ab084aa73da7ceebdfc303a1d2b80cde
Reviewed-on: https://skia-review.googlesource.com/47441
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/gpu/glsl/GrGLSLProgramBuilder.cpp b/src/gpu/glsl/GrGLSLProgramBuilder.cpp
index c2a0d64e5a..bb3dc4f0a9 100644
--- a/src/gpu/glsl/GrGLSLProgramBuilder.cpp
+++ b/src/gpu/glsl/GrGLSLProgramBuilder.cpp
@@ -82,7 +82,8 @@ void GrGLSLProgramBuilder::emitAndInstallPrimProc(const GrPrimitiveProcessor& pr
         rtAdjustVisibility |= kGeometry_GrShaderFlag;
     }
     fUniformHandles.fRTAdjustmentUni = this->uniformHandler()->addUniform(rtAdjustVisibility,
-                                                                          kHighFloat4_GrSLType,
+                                                                          kVec4f_GrSLType,
+                                                                          kHigh_GrSLPrecision,
                                                                           "rtAdjustment");
     const char* rtAdjustName =
         this->uniformHandler()->getUniformCStr(fUniformHandles.fRTAdjustmentUni);
@@ -454,7 +455,7 @@ void GrGLSLProgramBuilder::nameExpression(SkString* output, const char* baseName
     } else {
         this->nameVariable(&outName, '\0', baseName);
     }
-    fFS.codeAppendf("half4 %s;", outName.c_str());
+    fFS.codeAppendf("float4 %s;", outName.c_str());
     *output = outName;
 }
 
@@ -467,7 +468,7 @@ void GrGLSLProgramBuilder::addRTHeightUniform(const char* name) {
         GrGLSLUniformHandler* uniformHandler = this->uniformHandler();
         fUniformHandles.fRTHeightUni =
             uniformHandler->internalAddUniformArray(kFragment_GrShaderFlag,
-                                                    kHalf_GrSLType, kDefault_GrSLPrecision,
+                                                    kFloat_GrSLType, kDefault_GrSLPrecision,
                                                     name, false, 0, nullptr);
 }