Add more testing to trusted graphics_3d.

ppapi/tests/test_graphics_3d.cc

Index: ppapi/tests/test_graphics_3d.cc
===================================================================
--- ppapi/tests/test_graphics_3d.cc	(revision 142004)
+++ ppapi/tests/test_graphics_3d.cc	(working copy)
@@ -1,31 +1,41 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/tests/test_graphics_3d.h"
 
 #include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 #include "ppapi/c/dev/ppb_testing_dev.h"
 #include "ppapi/c/ppb_opengles2.h"
 #include "ppapi/cpp/graphics_3d.h"
 #include "ppapi/cpp/module.h"
+#include "ppapi/lib/gl/gles2/gl2ext_ppapi.h"
 #include "ppapi/tests/test_utils.h"
 #include "ppapi/tests/testing_instance.h"
 
+const int32_t kInvalidContext = 0;
+
 REGISTER_TEST_CASE(Graphics3D);
 
 bool TestGraphics3D::Init() {
   opengl_es2_ = static_cast<const PPB_OpenGLES2*>(
       pp::Module::Get()->GetBrowserInterface(PPB_OPENGLES2_INTERFACE));
+  glInitializePPAPI(pp::Module::Get()->get_browser_interface());
   return opengl_es2_ && CheckTestingInterface();
 }
 
 void TestGraphics3D::RunTests(const std::string& filter) {
-  RUN_TEST(Frame, filter);
+  RUN_TEST(FramePPAPI, filter);
+  RUN_TEST(FrameGL, filter);
+  RUN_TEST(ExtensionsGL, filter);
 }
 
-std::string TestGraphics3D::TestFrame() {
+std::string TestGraphics3D::TestFramePPAPI() {
   const int width = 16;
   const int height = 16;
   const int32_t attribs[] = {
@@ -36,20 +46,94 @@
   pp::Graphics3D context(instance_, attribs);
   ASSERT_FALSE(context.is_null());
 
+  const uint8_t red_color[4] = {255, 0, 0, 255};
+
+  // Access OpenGLES API through the PPAPI interface.
   // Clear color buffer to opaque red.
   opengl_es2_->ClearColor(context.pp_resource(), 1.0f, 0.0f, 0.0f, 1.0f);
   opengl_es2_->Clear(context.pp_resource(), GL_COLOR_BUFFER_BIT);
   // Check if the color buffer has opaque red.
+  std::string error = CheckPixelPPAPI(&context, width/2, height/2, red_color);
+  if (!error.empty())
+    return error;
+
+  int32_t rv = SwapBuffersSync(&context);
+  ASSERT_EQ(rv, PP_OK);
+
+  PASS();
+}
+
+std::string TestGraphics3D::TestFrameGL() {
+  const int width = 16;
+  const int height = 16;
+  const int32_t attribs[] = {
+      PP_GRAPHICS3DATTRIB_WIDTH, width,
+      PP_GRAPHICS3DATTRIB_HEIGHT, height,
+      PP_GRAPHICS3DATTRIB_NONE
+  };
+  pp::Graphics3D context(instance_, attribs);
+  ASSERT_FALSE(context.is_null());
+
   const uint8_t red_color[4] = {255, 0, 0, 255};
-  std::string error = TestPixel(&context, width/2, height/2, red_color);
+  // Perform same operations as TestFramePPAPI, but use OpenGLES API directly.
+  // This is how most developers will use OpenGLES.
+  glSetCurrentContextPPAPI(context.pp_resource());
+  glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
+  glClear(GL_COLOR_BUFFER_BIT);
+  std::string error = CheckPixelGL(width/2, height/2, red_color);
+  glSetCurrentContextPPAPI(kInvalidContext);
   if (!error.empty())
     return error;
 
   int32_t rv = SwapBuffersSync(&context);
   ASSERT_EQ(rv, PP_OK);
+
   PASS();
 }
 
+std::string TestGraphics3D::TestExtensionsGL() {
+  const int width = 16;
+  const int height = 16;
+  const int32_t attribs[] = {
+      PP_GRAPHICS3DATTRIB_WIDTH, width,
+      PP_GRAPHICS3DATTRIB_HEIGHT, height,
+      PP_GRAPHICS3DATTRIB_NONE
+  };
+  pp::Graphics3D context(instance_, attribs);
+  ASSERT_FALSE(context.is_null());
+
+  glSetCurrentContextPPAPI(context.pp_resource());
+  glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+  glClear(GL_COLOR_BUFFER_BIT);
+
+  // Ask about a couple of extensions via glGetString.  If an extension is
+  // available, try a couple of trivial calls.  This test is not intended
+  // to be exhaustive; check the source can compile, link, and run without
+  // crashing.
+  ASSERT_NE(glGetString(GL_VERSION), NULL);
+  const char* ext = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
+  if (strstr(ext, "GL_EXT_occlusion_query_boolean")) {
+    GLuint a_query;
+    GLboolean is_a_query;
+    glGenQueriesEXT(1, &a_query);
+    ASSERT_NE(a_query, 0);
+    glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, a_query);
+    is_a_query = glIsQueryEXT(a_query);
+    ASSERT_EQ(is_a_query, GL_TRUE);
+    glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
+    glDeleteQueriesEXT(1, &a_query);
+  }
+  if (strstr(ext, "GL_ANGLE_instanced_arrays")) {
+    glDrawArraysInstancedANGLE(GL_TRIANGLE_STRIP, 0, 0, 0);
+  }
+  glSetCurrentContextPPAPI(kInvalidContext);
+
+  int32_t rv = SwapBuffersSync(&context);
+  ASSERT_EQ(rv, PP_OK);
+
+  PASS();
+}
+
 int32_t TestGraphics3D::SwapBuffersSync(pp::Graphics3D* context) {
   TestCompletionCallback callback(instance_->pp_instance(), true);
   int32_t rv = context->SwapBuffers(callback);
@@ -59,7 +143,7 @@
   return callback.WaitForResult();
 }
 
-std::string TestGraphics3D::TestPixel(
+std::string TestGraphics3D::CheckPixelPPAPI(
     pp::Graphics3D* context,
     int x, int y, const uint8_t expected_color[4]) {
   GLubyte pixel_color[4];
@@ -73,3 +157,15 @@
   PASS();
 }
 
+std::string TestGraphics3D::CheckPixelGL(
+    int x, int y, const uint8_t expected_color[4]) {
+  GLubyte pixel_color[4];
+  glReadPixels(x, y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixel_color);
+
+  ASSERT_EQ(pixel_color[0], expected_color[0]);
+  ASSERT_EQ(pixel_color[1], expected_color[1]);
+  ASSERT_EQ(pixel_color[2], expected_color[2]);
+  ASSERT_EQ(pixel_color[3], expected_color[3]);
+  PASS();
+}
+