mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-20 07:13:56 -07:00
89c181ded1
Commented By: Stan Differential Revision: https://code.wildfiregames.com/D4375 This was SVN commit r26072.
166 lines
4.7 KiB
C++
166 lines
4.7 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "Device.h"
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#include "lib/external_libraries/libsdl.h"
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#include "lib/ogl.h"
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#include "ps/CLogger.h"
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#if OS_WIN
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#include "lib/sysdep/os/win/wgfx.h"
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#endif
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#include <algorithm>
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#include <boost/algorithm/string/classification.hpp>
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#include <boost/algorithm/string/split.hpp>
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namespace Renderer
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{
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namespace Backend
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{
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namespace GL
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{
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namespace
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{
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std::string GetNameImpl()
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{
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// GL_VENDOR+GL_RENDERER are good enough here, so we don't use WMI to detect the cards.
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// On top of that WMI can cause crashes with Nvidia Optimus and some netbooks
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// see http://trac.wildfiregames.com/ticket/1952
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// http://trac.wildfiregames.com/ticket/1575
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char cardName[128];
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const char* vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
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const char* renderer = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
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// Happens if called before GL initialization.
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if (!vendor || !renderer)
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return {};
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sprintf_s(cardName, std::size(cardName), "%s %s", vendor, renderer);
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// Remove crap from vendor names. (don't dare touch the model name -
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// it's too risky, there are too many different strings).
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#define SHORTEN(what, charsToKeep) \
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if (!strncmp(cardName, what, std::size(what) - 1)) \
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memmove(cardName + charsToKeep, cardName + std::size(what) - 1, (strlen(cardName) - (std::size(what) - 1) + 1) * sizeof(char));
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SHORTEN("ATI Technologies Inc.", 3);
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SHORTEN("NVIDIA Corporation", 6);
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SHORTEN("S3 Graphics", 2); // returned by EnumDisplayDevices
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SHORTEN("S3 Graphics, Incorporated", 2); // returned by GL_VENDOR
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#undef SHORTEN
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return cardName;
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}
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std::string GetVersionImpl()
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{
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return reinterpret_cast<const char*>(glGetString(GL_VERSION));
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}
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std::string GetDriverInformationImpl()
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{
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const std::string version = GetVersionImpl();
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std::string driverInfo;
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#if OS_WIN
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driverInfo = CStrW(wgfx_DriverInfo()).ToUTF8();
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if (driverInfo.empty())
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#endif
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{
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if (!version.empty())
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{
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// Add "OpenGL" to differentiate this from the real driver version
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// (returned by platform-specific detect routines).
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driverInfo = std::string("OpenGL ") + version;
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}
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}
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if (driverInfo.empty())
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return version;
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return version + " " + driverInfo;
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}
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std::vector<std::string> GetExtensionsImpl()
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{
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std::vector<std::string> extensions;
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const std::string exts = ogl_ExtensionString();
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boost::split(extensions, exts, boost::algorithm::is_space(), boost::token_compress_on);
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std::sort(extensions.begin(), extensions.end());
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return extensions;
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}
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} // anonymous namespace
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// static
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std::unique_ptr<CDevice> CDevice::Create(SDL_Window* window)
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{
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std::unique_ptr<CDevice> device(new CDevice());
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if (window)
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{
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device->m_Context = SDL_GL_CreateContext(window);
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if (!device->m_Context)
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{
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LOGERROR("SDL_GL_CreateContext failed: '%s'", SDL_GetError());
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return nullptr;
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}
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}
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ogl_Init();
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if ((ogl_HaveExtensions(0, "GL_ARB_vertex_program", "GL_ARB_fragment_program", nullptr) // ARB
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&& ogl_HaveExtensions(0, "GL_ARB_vertex_shader", "GL_ARB_fragment_shader", nullptr)) // GLSL
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|| !ogl_HaveExtension("GL_ARB_vertex_buffer_object") // VBO
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|| ogl_HaveExtensions(0, "GL_ARB_multitexture", "GL_EXT_draw_range_elements", nullptr)
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|| (!ogl_HaveExtension("GL_EXT_framebuffer_object") && !ogl_HaveExtension("GL_ARB_framebuffer_object")))
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{
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// It doesn't make sense to continue working here, because we're not
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// able to display anything.
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DEBUG_DISPLAY_FATAL_ERROR(
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L"Your graphics card doesn't appear to be fully compatible with OpenGL shaders."
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L" The game does not support pre-shader graphics cards."
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L" You are advised to try installing newer drivers and/or upgrade your graphics card."
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L" For more information, please see http://www.wildfiregames.com/forum/index.php?showtopic=16734"
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);
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}
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device->m_Name = GetNameImpl();
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device->m_Version = GetVersionImpl();
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device->m_DriverInformation = GetDriverInformationImpl();
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device->m_Extensions = GetExtensionsImpl();
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return device;
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}
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CDevice::CDevice() = default;
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CDevice::~CDevice()
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{
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if (m_Context)
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SDL_GL_DeleteContext(m_Context);
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}
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} // namespace GL
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} // namespace Backend
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} // namespace Renderer
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