207 lines
7.3 KiB
C++
207 lines
7.3 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "host/libs/graphics_detector/gles.h"
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#include <android-base/logging.h>
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#include <android-base/strings.h>
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namespace cuttlefish {
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namespace {
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constexpr const char kGles2Lib[] = "libGLESv2.so";
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static void GL_APIENTRY GlDebugCallback(GLenum, GLenum, GLuint, GLenum, GLsizei,
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const GLchar* message, const void*) {
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LOG(VERBOSE) << "GlDebugCallback message: " << message;
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}
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} // namespace
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/*static*/ std::optional<Gles> Gles::Load() {
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auto lib_opt = Lib::Load(kGles2Lib);
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if (!lib_opt) {
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return std::nullopt;
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}
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Gles gles;
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gles.lib_ = std::move(*lib_opt);
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#define LOAD_GLES_FUNCTION_POINTER(return_type, function_name, signature, \
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args) \
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gles.function_name = reinterpret_cast<return_type(*) signature>( \
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gles.lib_.GetSymbol(#function_name)); \
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if (gles.function_name == nullptr) { \
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gles.function_name = reinterpret_cast<return_type(*) signature>( \
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gles.lib_.GetSymbol(#function_name)); \
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} \
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if (gles.function_name == nullptr) { \
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gles.function_name = reinterpret_cast<return_type(*) signature>( \
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gles.lib_.GetSymbol(#function_name "OES")); \
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} \
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if (gles.function_name == nullptr) { \
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gles.function_name = reinterpret_cast<return_type(*) signature>( \
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gles.lib_.GetSymbol(#function_name "EXT")); \
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} \
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if (gles.function_name == nullptr) { \
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gles.function_name = reinterpret_cast<return_type(*) signature>( \
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gles.lib_.GetSymbol(#function_name "ARB")); \
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} \
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if (gles.function_name == nullptr) { \
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LOG(VERBOSE) << "Failed to load GLES function: " << #function_name; \
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} else { \
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LOG(VERBOSE) << "Loaded GLES function: " << #function_name; \
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}
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FOR_EACH_GLES_FUNCTION(LOAD_GLES_FUNCTION_POINTER);
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gles.Init();
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return std::move(gles);
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}
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/*static*/ std::optional<Gles> Gles::LoadFromEgl(Egl* egl) {
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auto lib_opt = Lib::Load(kGles2Lib);
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if (!lib_opt) {
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return std::nullopt;
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}
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Gles gles;
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#define LOAD_GLES_FUNCTION_POINTER_FROM_EGL(return_type, function_name, \
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signature, args) \
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gles.function_name = reinterpret_cast<return_type(*) signature>( \
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egl->eglGetProcAddress(#function_name)); \
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if (gles.function_name == nullptr) { \
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LOG(VERBOSE) << "Failed to load GLES function: " << #function_name; \
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} else { \
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LOG(VERBOSE) << "Loaded GLES function: " << #function_name; \
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}
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FOR_EACH_GLES_FUNCTION(LOAD_GLES_FUNCTION_POINTER_FROM_EGL);
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gles.Init();
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return std::move(gles);
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}
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void Gles::Init() {
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const GLubyte* gles_vendor = glGetString(GL_VENDOR);
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if (gles_vendor == nullptr) {
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LOG(FATAL) << "Failed to get GLES vendor";
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return;
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}
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LOG(VERBOSE) << "Found GLES vendor: " << gles_vendor;
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const std::string gles_extensions_str =
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reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
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if (gles_extensions_str.empty()) {
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LOG(FATAL) << "Failed to get GLES extensions";
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return;
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}
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std::vector<std::string> gles_extensions =
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android::base::Split(gles_extensions_str, " ");
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std::sort(gles_extensions.begin(), gles_extensions.end());
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LOG(VERBOSE) << "Found GLES extensions:";
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for (const std::string& gles_extension : gles_extensions) {
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LOG(VERBOSE) << gles_extension;
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}
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LOG(VERBOSE) << "";
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glEnable(GL_DEBUG_OUTPUT);
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glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
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glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_HIGH, 0,
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nullptr, GL_TRUE);
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glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_MEDIUM, 0,
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nullptr, GL_TRUE);
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glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_LOW, 0,
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nullptr, GL_TRUE);
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glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE,
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GL_DEBUG_SEVERITY_NOTIFICATION, 0, nullptr, GL_FALSE);
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glDebugMessageCallback(&GlDebugCallback, nullptr);
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}
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std::optional<GLuint> Gles::CreateShader(GLenum shader_type,
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const std::string& shader_source) {
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GLuint shader = glCreateShader(shader_type);
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const char* const shader_source_cstr = shader_source.c_str();
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glShaderSource(shader, 1, &shader_source_cstr, nullptr);
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glCompileShader(shader);
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GLint status;
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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if (status != GL_TRUE) {
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GLsizei log_length = 0;
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glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_length);
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std::vector<char> log(log_length + 1, 0);
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glGetShaderInfoLog(shader, log_length, nullptr, log.data());
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LOG(ERROR) << "Failed to compile shader: " << log.data();
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glDeleteShader(shader);
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return std::nullopt;
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}
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return shader;
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}
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std::optional<GLuint> Gles::CreateProgram(
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const std::string& vert_shader_source,
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const std::string& frag_shader_source) {
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auto vert_shader_opt = CreateShader(GL_VERTEX_SHADER, vert_shader_source);
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if (!vert_shader_opt) {
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LOG(ERROR) << "Failed to create vert shader.";
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return std::nullopt;
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}
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auto vert_shader = *vert_shader_opt;
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auto frag_shader_opt = CreateShader(GL_FRAGMENT_SHADER, frag_shader_source);
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if (!frag_shader_opt) {
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LOG(ERROR) << "Failed to create frag shader.";
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return std::nullopt;
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}
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auto frag_shader = *frag_shader_opt;
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GLuint program = glCreateProgram();
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glAttachShader(program, vert_shader);
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glAttachShader(program, frag_shader);
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glLinkProgram(program);
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GLint status;
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glGetProgramiv(program, GL_LINK_STATUS, &status);
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if (status != GL_TRUE) {
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GLsizei log_length = 0;
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glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_length);
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std::vector<char> log(log_length + 1, 0);
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glGetProgramInfoLog(program, log_length, nullptr, log.data());
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LOG(ERROR) << "Failed to link program: " << log.data();
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glDeleteProgram(program);
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return std::nullopt;
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}
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glDeleteShader(vert_shader);
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glDeleteShader(frag_shader);
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return program;
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}
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} // namespace cuttlefish
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