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gl_api_unittest.cc
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gl_api_unittest.cc
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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 <memory>
#include "base/command_line.h"
#include "base/stl_util.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/gl_version_info.h"
#include "ui/gl/gpu_timing.h"
namespace gl {
class GLApiTest : public testing::Test {
public:
void SetUp() override {
fake_extension_string_ = "";
fake_version_string_ = "";
num_fake_extension_strings_ = 0;
fake_extension_strings_ = nullptr;
SetGLGetProcAddressProc(
static_cast<GLGetProcAddressProc>(&FakeGLGetProcAddress));
}
static GLFunctionPointerType GL_BINDING_CALL
FakeGLGetProcAddress(const char* proc) {
return reinterpret_cast<GLFunctionPointerType>(0x1);
}
void TearDown() override {
api_.reset(nullptr);
driver_.reset(nullptr);
SetGLImplementation(kGLImplementationNone);
fake_extension_string_ = "";
fake_version_string_ = "";
num_fake_extension_strings_ = 0;
fake_extension_strings_ = nullptr;
}
void InitializeAPI(const char* disabled_extensions) {
driver_.reset(new DriverGL());
driver_->fn.glGetStringFn = &FakeGetString;
driver_->fn.glGetStringiFn = &FakeGetStringi;
driver_->fn.glGetIntegervFn = &FakeGetIntegervFn;
api_.reset(new RealGLApi());
if (disabled_extensions) {
api_->SetDisabledExtensions(disabled_extensions);
}
api_->Initialize(driver_.get());
std::string extensions_string =
GetGLExtensionsFromCurrentContext(api_.get());
gfx::ExtensionSet extension_set = gfx::MakeExtensionSet(extensions_string);
auto version = std::make_unique<GLVersionInfo>(
reinterpret_cast<const char*>(api_->glGetStringFn(GL_VERSION)),
reinterpret_cast<const char*>(api_->glGetStringFn(GL_RENDERER)),
extension_set);
driver_->InitializeDynamicBindings(version.get(), extension_set);
api_->set_version(std::move(version));
}
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_;
std::unique_ptr<DriverGL> driver_;
std::unique_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());
InitializeAPI(kFakeDisabledExtensions);
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, base::size(kFakeExtensions));
InitializeAPI(nullptr);
EXPECT_TRUE(driver_->ext.b_GL_ARB_timer_query);
InitializeAPI(kFakeDisabledExtensions);
EXPECT_FALSE(driver_->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, base::size(kFakeExtensions));
InitializeAPI(nullptr);
EXPECT_EQ(base::size(kFakeExtensions), GetNumExtensions());
for (uint32_t i = 0; i < base::size(kFakeExtensions); ++i) {
EXPECT_STREQ(kFakeExtensions[i], GetExtensioni(i));
}
InitializeAPI(kFakeDisabledExtensions);
EXPECT_EQ(base::size(kFilteredExtensions), GetNumExtensions());
for (uint32_t i = 0; i < base::size(kFilteredExtensions); ++i) {
EXPECT_STREQ(kFilteredExtensions[i], GetExtensioni(i));
}
}
} // namespace gl