From da2b9f397f04300d2a706da3888ff781b21818ab Mon Sep 17 00:00:00 2001
From: Kevin Lubick <kjlubick@google.com>
Date: Tue, 5 Jun 2018 16:05:58 -0400
Subject: Add Gr enums and version parsing for SwiftShader

Bug: skia:
Change-Id: I1f29cde915a0ae7fa59d7cfdf30f51632c1c24c4
Reviewed-on: https://skia-review.googlesource.com/132264
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
---
 src/gpu/gl/GrGLUtil.cpp | 21 +++++++++++++++++++++
 src/gpu/gl/GrGLUtil.h   |  3 +++
 2 files changed, 24 insertions(+)

diff --git a/src/gpu/gl/GrGLUtil.cpp b/src/gpu/gl/GrGLUtil.cpp
index 0d622f5e3d..0a65f5628a 100644
--- a/src/gpu/gl/GrGLUtil.cpp
+++ b/src/gpu/gl/GrGLUtil.cpp
@@ -174,6 +174,21 @@ void GrGLGetDriverInfo(GrGLStandard standard,
         }
     }
 
+    if (kGoogle_GrGLVendor == vendor) {
+        // Swiftshader is the only Google vendor at the moment
+        *outDriver = kSwiftShader_GrGLDriver;
+
+        // Swiftshader has a strange version string: w.x.y.z  Going to arbitrarily ignore
+        // y and assume w,x and z are major, minor, point.
+        // As of writing, version is 4.0.0.6
+        int n = sscanf(versionString, "OpenGL ES %d.%d SwiftShader %d.%d.0.%d", &major, &minor,
+                       &driverMajor, &driverMinor, &driverPoint);
+        if (5 == n) {
+            *outVersion = GR_GL_DRIVER_VER(driverMajor, driverMinor, driverPoint);
+        }
+        return;
+    }
+
     if (kIntel_GrGLVendor == vendor) {
         // We presume we're on the Intel driver since it hasn't identified itself as Mesa.
         *outDriver = kIntel_GrGLDriver;
@@ -267,6 +282,9 @@ GrGLVendor GrGLGetVendorFromString(const char* vendorString) {
         if (0 == strcmp(vendorString, "ARM")) {
             return kARM_GrGLVendor;
         }
+        if (0 == strcmp(vendorString, "Google Inc.")) {
+            return kGoogle_GrGLVendor;
+        }
         if (0 == strcmp(vendorString, "Imagination Technologies")) {
             return kImagination_GrGLVendor;
         }
@@ -345,6 +363,9 @@ GrGLRenderer GrGLGetRendererFromStrings(const char* rendererString,
                 }
             }
         }
+        if (0 == strcmp("Google SwiftShader", rendererString)) {
+            return kGoogleSwiftShader_GrGLRenderer;
+        }
         if (0 == strcmp("Intel Iris Pro OpenGL Engine", rendererString)) {
             return kIntelIrisPro_GrGLRenderer;
         }
diff --git a/src/gpu/gl/GrGLUtil.h b/src/gpu/gl/GrGLUtil.h
index 96d024d8b8..2658139239 100644
--- a/src/gpu/gl/GrGLUtil.h
+++ b/src/gpu/gl/GrGLUtil.h
@@ -38,6 +38,7 @@ typedef uint64_t GrGLDriverVersion;
  */
 enum GrGLVendor {
     kARM_GrGLVendor,
+    kGoogle_GrGLVendor,
     kImagination_GrGLVendor,
     kIntel_GrGLVendor,
     kQualcomm_GrGLVendor,
@@ -56,6 +57,7 @@ enum GrGLRenderer {
     kAdreno4xx_GrGLRenderer,
     kAdreno5xx_GrGLRenderer,
     kOSMesa_GrGLRenderer,
+    kGoogleSwiftShader_GrGLRenderer,
     kIntelIrisPro_GrGLRenderer,
     /** Either HD 4xxx or Iris 4xxx */
     kIntel4xxx_GrGLRenderer,
@@ -80,6 +82,7 @@ enum GrGLDriver {
     kNVIDIA_GrGLDriver,
     kIntel_GrGLDriver,
     kANGLE_GrGLDriver,
+    kSwiftShader_GrGLDriver,
     kQualcomm_GrGLDriver,
     kUnknown_GrGLDriver
 };
-- 
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