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// Copyright 2015 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 <stdint.h>
#include "base/command_line.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_gl_api_implementation.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_switches.h"
#include "ui/gl/gpu_timing.h"
namespace gfx {
class GLContextFake : public GLContext {
public:
bool Initialize(GLSurface* compatible_surface,
GpuPreference gpu_preference) override {
return true;
}
bool MakeCurrent(GLSurface* surface) override { return true; }
void ReleaseCurrent(GLSurface* surface) override {}
bool IsCurrent(GLSurface* surface) override { return true; }
void* GetHandle() override { return NULL; }
scoped_refptr<gfx::GPUTimingClient> CreateGPUTimingClient() override {
return NULL;
}
void OnSetSwapInterval(int interval) override {}
GLContextFake() : GLContext(NULL) {}
protected:
~GLContextFake() override {}
};
class GLApiTest : public testing::Test {
public:
void SetUp() override {
fake_extension_string_ = "";
fake_version_string_ = "";
num_fake_extension_strings_ = 0;
fake_extension_strings_ = nullptr;
DCHECK(!g_current_gl_context_tls);
g_current_gl_context_tls = new base::ThreadLocalPointer<GLApi>;
SetGLGetProcAddressProc(
static_cast<GLGetProcAddressProc>(&FakeGLGetProcAddress));
}
static void* GL_BINDING_CALL FakeGLGetProcAddress(const char *proc) {
return reinterpret_cast<void*>(0x1);
}
void TearDown() override {
api_.reset(nullptr);
delete g_current_gl_context_tls;
g_current_gl_context_tls = nullptr;
SetGLImplementation(kGLImplementationNone);
fake_extension_string_ = "";
fake_version_string_ = "";
num_fake_extension_strings_ = 0;
fake_extension_strings_ = nullptr;
}
void InitializeAPI(base::CommandLine* command_line) {
api_.reset(new RealGLApi());
g_current_gl_context_tls->Set(api_.get());
g_driver_gl.ClearBindings();
g_driver_gl.fn.glGetStringFn = &FakeGetString;
g_driver_gl.fn.glGetStringiFn = &FakeGetStringi;
g_driver_gl.fn.glGetIntegervFn = &FakeGetIntegervFn;
fake_context_ = new GLContextFake();
if (command_line)
api_->InitializeWithCommandLine(&g_driver_gl, command_line);
else
api_->Initialize(&g_driver_gl);
api_->InitializeFilteredExtensions();
g_driver_gl.InitializeCustomDynamicBindings(fake_context_.get());
}
void SetFakeExtensionString(const char* fake_string) {
SetGLImplementation(kGLImplementationDesktopGL);
fake_extension_string_ = fake_string;
fake_version_string_ = "2.1";
}
void SetFakeExtensionStrings(const char** fake_strings, uint32_t count) {
SetGLImplementation(kGLImplementationDesktopGL);
num_fake_extension_strings_ = count;
fake_extension_strings_ = fake_strings;
fake_version_string_ = "3.0";
}
static const GLubyte* GL_BINDING_CALL FakeGetString(GLenum name) {
if (name == GL_VERSION)
return reinterpret_cast<const GLubyte*>(fake_version_string_);
return reinterpret_cast<const GLubyte*>(fake_extension_string_);
}
static void GL_BINDING_CALL FakeGetIntegervFn(GLenum pname, GLint* params) {
*params = num_fake_extension_strings_;
}
static const GLubyte* GL_BINDING_CALL FakeGetStringi(GLenum name,
GLuint index) {
return (index < num_fake_extension_strings_) ?
reinterpret_cast<const GLubyte*>(fake_extension_strings_[index]) :
nullptr;
}
const char* GetExtensions() {
return reinterpret_cast<const char*>(api_->glGetStringFn(GL_EXTENSIONS));
}
uint32_t GetNumExtensions() {
GLint num_extensions = 0;
api_->glGetIntegervFn(GL_NUM_EXTENSIONS, &num_extensions);
return static_cast<uint32_t>(num_extensions);
}
const char* GetExtensioni(uint32_t index) {
return reinterpret_cast<const char*>(api_->glGetStringiFn(GL_EXTENSIONS,
index));
}
protected:
static const char* fake_extension_string_;
static const char* fake_version_string_;
static uint32_t num_fake_extension_strings_;
static const char** fake_extension_strings_;
scoped_refptr<GLContext> fake_context_;
scoped_ptr<DriverGL> driver_;
scoped_ptr<RealGLApi> api_;
};
const char* GLApiTest::fake_extension_string_ = "";
const char* GLApiTest::fake_version_string_ = "";
uint32_t GLApiTest::num_fake_extension_strings_ = 0;
const char** GLApiTest::fake_extension_strings_ = nullptr;
TEST_F(GLApiTest, DisabledExtensionStringTest) {
static const char* kFakeExtensions = "GL_EXT_1 GL_EXT_2 GL_EXT_3 GL_EXT_4";
static const char* kFakeDisabledExtensions = "GL_EXT_1,GL_EXT_2,GL_FAKE";
static const char* kFilteredExtensions = "GL_EXT_3 GL_EXT_4";
SetFakeExtensionString(kFakeExtensions);
InitializeAPI(nullptr);
EXPECT_STREQ(kFakeExtensions, GetExtensions());
base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
command_line.AppendSwitchASCII(switches::kDisableGLExtensions,
kFakeDisabledExtensions);
InitializeAPI(&command_line);
EXPECT_STREQ(kFilteredExtensions, GetExtensions());
}
TEST_F(GLApiTest, DisabledExtensionBitTest) {
static const char* kFakeExtensions[] = {
"GL_ARB_timer_query"
};
static const char* kFakeDisabledExtensions = "GL_ARB_timer_query";
SetFakeExtensionStrings(kFakeExtensions, arraysize(kFakeExtensions));
InitializeAPI(nullptr);
EXPECT_TRUE(g_driver_gl.ext.b_GL_ARB_timer_query);
base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
command_line.AppendSwitchASCII(switches::kDisableGLExtensions,
kFakeDisabledExtensions);
InitializeAPI(&command_line);
EXPECT_FALSE(g_driver_gl.ext.b_GL_ARB_timer_query);
}
TEST_F(GLApiTest, DisabledExtensionStringIndexTest) {
static const char* kFakeExtensions[] = {
"GL_EXT_1",
"GL_EXT_2",
"GL_EXT_3",
"GL_EXT_4"
};
static const char* kFakeDisabledExtensions = "GL_EXT_1,GL_EXT_2,GL_FAKE";
static const char* kFilteredExtensions[] = {
"GL_EXT_3",
"GL_EXT_4"
};
SetFakeExtensionStrings(kFakeExtensions, arraysize(kFakeExtensions));
InitializeAPI(nullptr);
EXPECT_EQ(arraysize(kFakeExtensions), GetNumExtensions());
for (uint32_t i = 0; i < arraysize(kFakeExtensions); ++i) {
EXPECT_STREQ(kFakeExtensions[i], GetExtensioni(i));
}
base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
command_line.AppendSwitchASCII(switches::kDisableGLExtensions,
kFakeDisabledExtensions);
InitializeAPI(&command_line);
EXPECT_EQ(arraysize(kFilteredExtensions), GetNumExtensions());
for (uint32_t i = 0; i < arraysize(kFilteredExtensions); ++i) {
EXPECT_STREQ(kFilteredExtensions[i], GetExtensioni(i));
}
}
} // namespace gfx
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