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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdint.h>
#include <array>
#include <memory>
#include <string_view>
#include "base/command_line.h"
#include "base/strings/string_split.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:
static GLFunctionPointerType GL_BINDING_CALL
FakeGLGetProcAddress(const char* proc) {
return reinterpret_cast<GLFunctionPointerType>(0x1);
}
void SetUp() override {
fake_extension_string_ = "";
fake_version_string_ = "";
SetGLGetProcAddressProc(
static_cast<GLGetProcAddressProc>(&FakeGLGetProcAddress));
}
void TearDown() override {
TerminateAPI();
SetGLImplementation(kGLImplementationNone);
fake_extension_string_ = "";
fake_version_string_ = "";
}
void InitializeAPI(const char* disabled_extensions) {
driver_ = std::make_unique<DriverGL>();
driver_->fn.glGetStringFn = &FakeGetString;
driver_->fn.glGetStringiFn = &FakeGetStringi;
driver_->fn.glGetIntegervFn = &FakeGetIntegervFn;
api_ = std::make_unique<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(FakeGLGetProcAddress, version.get(),
extension_set);
api_->set_version(std::move(version));
}
void TerminateAPI() {
api_.reset();
driver_.reset();
}
void SetFakeExtensionString(const char* fake_string) {
SetGLImplementation(kGLImplementationEGLANGLE);
fake_extension_string_ = fake_string;
fake_version_string_ = "OpenGL ES 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) {
std::vector<std::string> extensions =
base::SplitString(fake_extension_string_, " ", base::TRIM_WHITESPACE,
base::SPLIT_WANT_NONEMPTY);
*params = static_cast<GLint>(extensions.size());
}
static const GLubyte* GL_BINDING_CALL FakeGetStringi(GLenum name,
GLuint index) {
// |extensions| needs to be static so we can return c_str() from
// its elements.
static std::vector<std::string> extensions;
extensions =
base::SplitString(fake_extension_string_, " ", base::TRIM_WHITESPACE,
base::SPLIT_WANT_NONEMPTY);
GLuint count = static_cast<GLuint>(extensions.size());
return (index < count)
? reinterpret_cast<const GLubyte*>(extensions[index].c_str())
: 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_;
std::unique_ptr<DriverGL> driver_;
std::unique_ptr<RealGLApi> api_;
};
const char* GLApiTest::fake_extension_string_ = "";
const char* GLApiTest::fake_version_string_ = "";
TEST_F(GLApiTest, DisabledExtensionStringTest) {
static constexpr std::string_view kFakeExtensions =
"GL_EXT_1 GL_EXT_2 GL_EXT_3 GL_EXT_4";
static constexpr std::string_view kFakeDisabledExtensions =
"GL_EXT_1,GL_EXT_2,GL_FAKE";
static constexpr std::string_view kFilteredExtensions = "GL_EXT_3 GL_EXT_4";
SetFakeExtensionString(kFakeExtensions.data());
InitializeAPI(nullptr);
EXPECT_STREQ(kFakeExtensions.data(), GetExtensions());
TerminateAPI();
InitializeAPI(kFakeDisabledExtensions.data());
EXPECT_STREQ(kFilteredExtensions.data(), GetExtensions());
}
TEST_F(GLApiTest, DisabledExtensionBitTest) {
static constexpr std::string_view kFakeExtensions =
"GL_EXT_disjoint_timer_query";
static constexpr std::string_view kFakeDisabledExtensions =
"GL_EXT_disjoint_timer_query";
SetFakeExtensionString(kFakeExtensions.data());
InitializeAPI(nullptr);
EXPECT_TRUE(driver_->ext.b_GL_EXT_disjoint_timer_query);
TerminateAPI();
InitializeAPI(kFakeDisabledExtensions.data());
EXPECT_FALSE(driver_->ext.b_GL_EXT_disjoint_timer_query);
}
TEST_F(GLApiTest, DisabledExtensionStringIndexTest) {
static constexpr std::string_view kFakeExtensions =
"GL_EXT_1 GL_EXT_2 GL_EXT_3 GL_EXT_4";
static constexpr std::array<std::string_view, 4> kFakeExtensionList = {
{"GL_EXT_1", "GL_EXT_2", "GL_EXT_3", "GL_EXT_4"}};
static constexpr std::string_view kFakeDisabledExtensions =
"GL_EXT_1,GL_EXT_2,GL_FAKE";
static constexpr std::array<std::string_view, 2> kFilteredExtensions = {
{"GL_EXT_3", "GL_EXT_4"}};
SetFakeExtensionString(kFakeExtensions.data());
InitializeAPI(nullptr);
EXPECT_EQ(kFakeExtensionList.size(), GetNumExtensions());
for (size_t i = 0; i < kFakeExtensionList.size(); ++i) {
EXPECT_STREQ(kFakeExtensionList[i].data(), GetExtensioni(i));
}
TerminateAPI();
InitializeAPI(kFakeDisabledExtensions.data());
EXPECT_EQ(std::size(kFilteredExtensions), GetNumExtensions());
for (size_t i = 0; i < kFilteredExtensions.size(); ++i) {
EXPECT_STREQ(kFilteredExtensions[i].data(), GetExtensioni(i));
}
}
} // namespace gl
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