skia: Add ANGLE with GL backend to nanobench/DM

src/gpu/gl/angle/SkANGLEGLContext.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/angle/SkANGLEGLContext.h"
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
 #define EGL_PLATFORM_ANGLE_ANGLE                0x3202
 #define EGL_PLATFORM_ANGLE_TYPE_ANGLE           0x3203
 #define EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE      0x3207
 #define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE     0x3208
+#define EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE    0x320D
 
-void* SkANGLEGLContext::GetD3DEGLDisplay(void* nativeDisplay) {
+void* SkANGLEGLContext::GetD3DEGLDisplay(void* nativeDisplay, bool useGLBackend) {
     PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT;
     eglGetPlatformDisplayEXT =
         (PFNEGLGETPLATFORMDISPLAYEXTPROC)eglGetProcAddress("eglGetPlatformDisplayEXT");
 
     if (!eglGetPlatformDisplayEXT) {
         return eglGetDisplay(static_cast<EGLNativeDisplayType>(nativeDisplay));
     }
 
-    // Try for an ANGLE D3D11 context, fall back to D3D9.
-    EGLint attribs[2][3] = {
-        {
-            EGL_PLATFORM_ANGLE_TYPE_ANGLE,
-            EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
-            EGL_NONE
-        },
-        {
-            EGL_PLATFORM_ANGLE_TYPE_ANGLE,
-            EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE,
-            EGL_NONE
+    EGLDisplay display = EGL_NO_DISPLAY;
+    if (useGLBackend) {
+        // Try for an ANGLE D3D11 context, fall back to D3D9.
+        EGLint attribs[3] = {
+              EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+              EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE,
+              EGL_NONE
+        };
+        display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE,
+                                            nativeDisplay, attribs);
+    } else {
+        // Try for an ANGLE D3D11 context, fall back to D3D9, and finally GL.
+        EGLint attribs[3][3] = {
+            {
+                EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+                EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
+                EGL_NONE
+            },
+            {
+                EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+                EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE,
+                EGL_NONE
+            },
+            {
+                EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+                EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE,
+                EGL_NONE
+            }
+        };
+        for (int i = 0; i < 3 && display == EGL_NO_DISPLAY; ++i) {
+            display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE,
+                                                nativeDisplay, attribs[i]);
         }
-    };
-
-    EGLDisplay display = EGL_NO_DISPLAY;
-    for (int i = 0; i < 2 && display == EGL_NO_DISPLAY; ++i) {
-        display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE,
-                                            nativeDisplay, attribs[i]);
     }
     return display;
 }
 
-SkANGLEGLContext::SkANGLEGLContext()
+SkANGLEGLContext::SkANGLEGLContext(bool useGLBackend)
     : fContext(EGL_NO_CONTEXT)
     , fDisplay(EGL_NO_DISPLAY)
     , fSurface(EGL_NO_SURFACE) {
 
     EGLint numConfigs;
     static const EGLint configAttribs[] = {
         EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
         EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
         EGL_RED_SIZE, 8,
         EGL_GREEN_SIZE, 8,
         EGL_BLUE_SIZE, 8,
         EGL_ALPHA_SIZE, 8,
         EGL_NONE
     };
 
-    fDisplay = GetD3DEGLDisplay(EGL_DEFAULT_DISPLAY);
+    fDisplay = GetD3DEGLDisplay(EGL_DEFAULT_DISPLAY, useGLBackend);
     if (EGL_NO_DISPLAY == fDisplay) {
         SkDebugf("Could not create EGL display!");
         return;
     }
 
     EGLint majorVersion;
     EGLint minorVersion;
     eglInitialize(fDisplay, &majorVersion, &minorVersion);
 
     EGLConfig surfaceConfig;
@@ skipping 63 matching lines @@
 
 void SkANGLEGLContext::onPlatformSwapBuffers() const {
     if (!eglSwapBuffers(fDisplay, fSurface)) {
         SkDebugf("Could not complete eglSwapBuffers.\n");
     }
 }
 
 GrGLFuncPtr SkANGLEGLContext::onPlatformGetProcAddress(const char* name) const {
     return eglGetProcAddress(name);
 }