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kwin/libkwineffects/kwinglplatform.cpp
Martin Gräßlin a9f450db27 Allow to create an OpenGL Compositor with llvmpipe 
Summary:
This is a radical change to the approach KWin used to have. So far KWin
fall back to XRender compositing if it detected llvmpipe. With this
change KWin will use OpenGL compositing also on llvmpipe.

This has drawbacks: it's CPU emulated which we actually do not want.
But the question is whether it still makes sense to keep the no-GL
enforcement.

There are several things to consider here:
* QtQuick will use llvmpipe anyway (including things like Plasmashell)
* glamor might be used in the xorg layer which also uses llvmpipe on
  XRender
* more consistent look
* we get OpenGL working in tests (important for e.g. openQA)
* hardware which does not support proper GL gets less, there are
  GL drivers for KVM, there are GL drivers for rPI, etc. We don't
  need to block it anymore because of possibly bad results on those
  hardware. Also they mostly use glamor.
* there is still the way to manually select XRender/QPainter compositing

Reviewers: #kwin, #plasma

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D2184
2016-07-18 08:10:08 +02:00

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2010 Fredrik Höglund <fredrik@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "kwinglplatform.h"
#include "kwinglutils.h"
#include <QRegExp>
#include <QStringList>
#include <QDebug>
#include <QOpenGLContext>
#include <sys/utsname.h>
#include <X11/Xlib.h>
#include <iostream>
#include <iomanip>
#include <ios>
namespace KWin
{
GLPlatform *GLPlatform::s_platform = 0;
static qint64 parseVersionString(const QByteArray &version)
{
// Skip any leading non digit
int start = 0;
while (start < version.length() && !QChar::fromLatin1(version[start]).isDigit())
start++;
// Strip any non digit, non '.' characters from the end
int end = start;
while (end < version.length() && (version[end] == '.' || QChar::fromLatin1(version[end]).isDigit()))
end++;
const QByteArray result = version.mid(start, end-start);
const QList<QByteArray> tokens = result.split('.');
const qint64 major = tokens.at(0).toInt();
const qint64 minor = tokens.count() > 1 ? tokens.at(1).toInt() : 0;
const qint64 patch = tokens.count() > 2 ? tokens.at(2).toInt() : 0;
return kVersionNumber(major, minor, patch);
}
static qint64 getXServerVersion()
{
qint64 major, minor, patch;
Display *dpy = display();
if (dpy && strstr(ServerVendor(dpy), "X.Org")) {
const int release = VendorRelease(dpy);
major = (release / 10000000);
minor = (release / 100000) % 100;
patch = (release / 1000) % 100;
} else {
major = 0;
minor = 0;
patch = 0;
}
return kVersionNumber(major, minor, patch);
}
static qint64 getKernelVersion()
{
struct utsname name;
uname(&name);
if (qstrcmp(name.sysname, "Linux") == 0)
return parseVersionString(name.release);
return 0;
}
// Extracts the portion of a string that matches a regular expression
static QString extract(const QString &string, const QString &match, int offset = 0)
{
QString result;
QRegExp rx(match);
int pos = rx.indexIn(string, offset);
if (pos != -1)
result = string.mid(pos, rx.matchedLength());
return result;
}
static ChipClass detectRadeonClass(const QByteArray &chipset)
{
if (chipset.isEmpty())
return UnknownRadeon;
if (chipset.contains("R100") ||
chipset.contains("RV100") ||
chipset.contains("RS100"))
return R100;
if (chipset.contains("RV200") ||
chipset.contains("RS200") ||
chipset.contains("R200") ||
chipset.contains("RV250") ||
chipset.contains("RS300") ||
chipset.contains("RV280"))
return R200;
if (chipset.contains("R300") ||
chipset.contains("R350") ||
chipset.contains("R360") ||
chipset.contains("RV350") ||
chipset.contains("RV370") ||
chipset.contains("RV380"))
return R300;
if (chipset.contains("R420") ||
chipset.contains("R423") ||
chipset.contains("R430") ||
chipset.contains("R480") ||
chipset.contains("R481") ||
chipset.contains("RV410") ||
chipset.contains("RS400") ||
chipset.contains("RC410") ||
chipset.contains("RS480") ||
chipset.contains("RS482") ||
chipset.contains("RS600") ||
chipset.contains("RS690") ||
chipset.contains("RS740"))
return R400;
if (chipset.contains("RV515") ||
chipset.contains("R520") ||
chipset.contains("RV530") ||
chipset.contains("R580") ||
chipset.contains("RV560") ||
chipset.contains("RV570"))
return R500;
if (chipset.contains("R600") ||
chipset.contains("RV610") ||
chipset.contains("RV630") ||
chipset.contains("RV670") ||
chipset.contains("RV620") ||
chipset.contains("RV635") ||
chipset.contains("RS780") ||
chipset.contains("RS880"))
return R600;
if (chipset.contains("R700") ||
chipset.contains("RV770") ||
chipset.contains("RV730") ||
chipset.contains("RV710") ||
chipset.contains("RV740"))
return R700;
if (chipset.contains("EVERGREEN") || // Not an actual chipset, but returned by R600G in 7.9
chipset.contains("CEDAR") ||
chipset.contains("REDWOOD") ||
chipset.contains("JUNIPER") ||
chipset.contains("CYPRESS") ||
chipset.contains("HEMLOCK") ||
chipset.contains("PALM"))
return Evergreen;
if (chipset.contains("SUMO") ||
chipset.contains("SUMO2") ||
chipset.contains("BARTS") ||
chipset.contains("TURKS") ||
chipset.contains("CAICOS") ||
chipset.contains("CAYMAN"))
return NorthernIslands;
const QString chipset16 = QString::fromLatin1(chipset);
QString name = extract(chipset16, QStringLiteral("HD [0-9]{4}")); // HD followed by a space and 4 digits
if (!name.isEmpty()) {
const int id = name.rightRef(4).toInt();
if (id == 6250 || id == 6310) // Palm
return Evergreen;
if (id >= 6000 && id < 7000)
return NorthernIslands; // HD 6xxx
if (id >= 5000 && id < 6000)
return Evergreen; // HD 5xxx
if (id >= 4000 && id < 5000)
return R700; // HD 4xxx
if (id >= 2000 && id < 4000) // HD 2xxx/3xxx
return R600;
return UnknownRadeon;
}
name = extract(chipset16, QStringLiteral("X[0-9]{3,4}")); // X followed by 3-4 digits
if (!name.isEmpty()) {
const int id = name.midRef(1, -1).toInt();
// X1xxx
if (id >= 1300)
return R500;
// X7xx, X8xx, X12xx, 2100
if ((id >= 700 && id < 1000) || id >= 1200)
return R400;
// X200, X3xx, X5xx, X6xx, X10xx, X11xx
if ((id >= 300 && id < 700) || (id >= 1000 && id < 1200))
return R300;
return UnknownRadeon;
}
name = extract(chipset16, QStringLiteral("\\b[0-9]{4}\\b")); // A group of 4 digits
if (!name.isEmpty()) {
const int id = name.toInt();
// 7xxx
if (id >= 7000 && id < 8000)
return R100;
// 8xxx, 9xxx
if (id >= 8000 && id < 9500)
return R200;
// 9xxx
if (id >= 9500)
return R300;
if (id == 2100)
return R400;
}
return UnknownRadeon;
}
static ChipClass detectNVidiaClass(const QString &chipset)
{
QString name = extract(chipset, QStringLiteral("\\bNV[0-9,A-F]{2}\\b")); // NV followed by two hexadecimal digits
if (!name.isEmpty()) {
const int id = chipset.midRef(2, -1).toInt(0, 16); // Strip the 'NV' from the id
switch(id & 0xf0) {
case 0x00:
case 0x10:
return NV10;
case 0x20:
return NV20;
case 0x30:
return NV30;
case 0x40:
case 0x60:
return NV40;
case 0x50:
case 0x80:
case 0x90:
case 0xA0:
return G80;
default:
return UnknownNVidia;
}
}
if (chipset.contains(QLatin1String("GeForce2")) || chipset.contains(QLatin1String("GeForce 256")))
return NV10;
if (chipset.contains(QLatin1String("GeForce3")))
return NV20;
if (chipset.contains(QLatin1String("GeForce4"))) {
if (chipset.contains(QLatin1String("MX 420")) ||
chipset.contains(QLatin1String("MX 440")) || // including MX 440SE
chipset.contains(QLatin1String("MX 460")) ||
chipset.contains(QLatin1String("MX 4000")) ||
chipset.contains(QLatin1String("PCX 4300")))
return NV10;
return NV20;
}
// GeForce 5,6,7,8,9
name = extract(chipset, QStringLiteral("GeForce (FX |PCX |Go )?\\d{4}(M|\\b)")).trimmed();
if (!name.isEmpty()) {
if (!name[name.length() - 1].isDigit())
name.chop(1);
const int id = name.rightRef(4).toInt();
if (id < 6000)
return NV30;
if (id >= 6000 && id < 8000)
return NV40;
if (id >= 8000)
return G80;
return UnknownNVidia;
}
// GeForce 100/200/300/400/500
name = extract(chipset, QStringLiteral("GeForce (G |GT |GTX |GTS )?\\d{3}(M|\\b)")).trimmed();
if (!name.isEmpty()) {
if (!name[name.length() - 1].isDigit())
name.chop(1);
const int id = name.rightRef(3).toInt();
if (id >= 100 && id < 600) {
if (id >= 400)
return GF100;
return G80;
}
return UnknownNVidia;
}
return UnknownNVidia;
}
static inline ChipClass detectNVidiaClass(const QByteArray &chipset)
{
return detectNVidiaClass(QString::fromLatin1(chipset));
}
static ChipClass detectIntelClass(const QByteArray &chipset)
{
// see mesa repository: src/mesa/drivers/dri/intel/intel_context.c
// GL 1.3, DX8? SM ?
if (chipset.contains("845G") ||
chipset.contains("830M") ||
chipset.contains("852GM/855GM") ||
chipset.contains("865G"))
return I8XX;
// GL 1.4, DX 9.0, SM 2.0
if (chipset.contains("915G") ||
chipset.contains("E7221G") ||
chipset.contains("915GM") ||
chipset.contains("945G") || // DX 9.0c
chipset.contains("945GM") ||
chipset.contains("945GME") ||
chipset.contains("Q33") || // GL1.5
chipset.contains("Q35") ||
chipset.contains("G33") ||
chipset.contains("965Q") || // GMA 3000, but apparently considered gen 4 by the driver
chipset.contains("946GZ") || // GMA 3000, but apparently considered gen 4 by the driver
chipset.contains("IGD"))
return I915;
// GL 2.0, DX 9.0c, SM 3.0
if (chipset.contains("965G") ||
chipset.contains("G45/G43") || // SM 4.0
chipset.contains("965GM") || // GL 2.1
chipset.contains("965GME/GLE") ||
chipset.contains("GM45") ||
chipset.contains("Q45/Q43") ||
chipset.contains("G41") ||
chipset.contains("B43") ||
chipset.contains("Ironlake"))
return I965;
// GL 3.1, CL 1.1, DX 10.1
if (chipset.contains("Sandybridge")) {
return SandyBridge;
}
// GL4.0, CL1.1, DX11, SM 5.0
if (chipset.contains("Ivybridge")) {
return IvyBridge;
}
// GL4.0, CL1.2, DX11.1, SM 5.0
if (chipset.contains("Haswell")) {
return Haswell;
}
return UnknownIntel;
}
QString GLPlatform::versionToString(qint64 version)
{
return QString::fromLatin1(versionToString8(version));
}
QByteArray GLPlatform::versionToString8(qint64 version)
{
int major = (version >> 32);
int minor = (version >> 16) & 0xffff;
int patch = version & 0xffff;
QByteArray string = QByteArray::number(major) + '.' + QByteArray::number(minor);
if (patch != 0)
string += '.' + QByteArray::number(patch);
return string;
}
QString GLPlatform::driverToString(Driver driver)
{
return QString::fromLatin1(driverToString8(driver));
}
QByteArray GLPlatform::driverToString8(Driver driver)
{
switch(driver) {
case Driver_R100:
return QByteArrayLiteral("Radeon");
case Driver_R200:
return QByteArrayLiteral("R200");
case Driver_R300C:
return QByteArrayLiteral("R300C");
case Driver_R300G:
return QByteArrayLiteral("R300G");
case Driver_R600C:
return QByteArrayLiteral("R600C");
case Driver_R600G:
return QByteArrayLiteral("R600G");
case Driver_Nouveau:
return QByteArrayLiteral("Nouveau");
case Driver_Intel:
return QByteArrayLiteral("Intel");
case Driver_NVidia:
return QByteArrayLiteral("NVIDIA");
case Driver_Catalyst:
return QByteArrayLiteral("Catalyst");
case Driver_Swrast:
return QByteArrayLiteral("Software rasterizer");
case Driver_Softpipe:
return QByteArrayLiteral("softpipe");
case Driver_Llvmpipe:
return QByteArrayLiteral("LLVMpipe");
case Driver_VirtualBox:
return QByteArrayLiteral("VirtualBox (Chromium)");
case Driver_VMware:
return QByteArrayLiteral("VMware (SVGA3D)");
default:
return QByteArrayLiteral("Unknown");
}
}
QString GLPlatform::chipClassToString(ChipClass chipClass)
{
return QString::fromLatin1(chipClassToString8(chipClass));
}
QByteArray GLPlatform::chipClassToString8(ChipClass chipClass)
{
switch(chipClass) {
case R100:
return QByteArrayLiteral("R100");
case R200:
return QByteArrayLiteral("R200");
case R300:
return QByteArrayLiteral("R300");
case R400:
return QByteArrayLiteral("R400");
case R500:
return QByteArrayLiteral("R500");
case R600:
return QByteArrayLiteral("R600");
case R700:
return QByteArrayLiteral("R700");
case Evergreen:
return QByteArrayLiteral("EVERGREEN");
case NorthernIslands:
return QByteArrayLiteral("NI");
case NV10:
return QByteArrayLiteral("NV10");
case NV20:
return QByteArrayLiteral("NV20");
case NV30:
return QByteArrayLiteral("NV30");
case NV40:
return QByteArrayLiteral("NV40/G70");
case G80:
return QByteArrayLiteral("G80/G90");
case GF100:
return QByteArrayLiteral("GF100");
case I8XX:
return QByteArrayLiteral("i830/i835");
case I915:
return QByteArrayLiteral("i915/i945");
case I965:
return QByteArrayLiteral("i965");
case SandyBridge:
return QByteArrayLiteral("SandyBridge");
case IvyBridge:
return QByteArrayLiteral("IvyBridge");
case Haswell:
return QByteArrayLiteral("Haswell");
default:
return QByteArrayLiteral("Unknown");
}
}
// -------
GLPlatform::GLPlatform()
: m_driver(Driver_Unknown),
m_chipClass(UnknownChipClass),
m_recommendedCompositor(XRenderCompositing),
m_mesaVersion(0),
m_galliumVersion(0),
m_looseBinding(false),
m_supportsGLSL(false),
m_limitedGLSL(false),
m_textureNPOT(false),
m_limitedNPOT(false),
m_virtualMachine(false),
m_platformInterface(NoOpenGLPlatformInterface),
m_gles(false)
{
}
GLPlatform::~GLPlatform()
{
}
void GLPlatform::detect(OpenGLPlatformInterface platformInterface)
{
m_platformInterface = platformInterface;
m_vendor = (const char*)glGetString(GL_VENDOR);
m_renderer = (const char*)glGetString(GL_RENDERER);
m_version = (const char*)glGetString(GL_VERSION);
// Parse the OpenGL version
const QList<QByteArray> versionTokens = m_version.split(' ');
if (versionTokens.count() > 0) {
const QByteArray version = QByteArray(m_version);
m_glVersion = parseVersionString(version);
if (platformInterface == EglPlatformInterface) {
// only EGL can have OpenGLES, GLX is OpenGL only
if (version.startsWith("OpenGL ES")) {
// from GLES 2: "Returns a version or release number of the form OpenGL<space>ES<space><version number><space><vendor-specific information>."
// from GLES 3: "Returns a version or release number." and "The version number uses one of these forms: major_number.minor_number major_number.minor_number.release_number"
m_gles = true;
}
}
}
if (!isGLES() && m_glVersion >= kVersionNumber(3, 0)) {
int count;
glGetIntegerv(GL_NUM_EXTENSIONS, &count);
for (int i = 0; i < count; i++) {
const char *name = (const char *) glGetStringi(GL_EXTENSIONS, i);
m_extensions.insert(name);
}
} else {
const QByteArray extensions = (const char *) glGetString(GL_EXTENSIONS);
m_extensions = QSet<QByteArray>::fromList(extensions.split(' '));
}
// Parse the Mesa version
const int mesaIndex = versionTokens.indexOf("Mesa");
if (mesaIndex != -1) {
const QByteArray version = versionTokens.at(mesaIndex + 1);
m_mesaVersion = parseVersionString(version);
}
if (platformInterface == EglPlatformInterface) {
if (isGLES()) {
m_supportsGLSL = true;
m_textureNPOT = true;
} else {
m_supportsGLSL = m_extensions.contains("GL_ARB_shader_objects") &&
m_extensions.contains("GL_ARB_fragment_shader") &&
m_extensions.contains("GL_ARB_vertex_shader");
m_textureNPOT = m_extensions.contains("GL_ARB_texture_non_power_of_two");
}
} else if (platformInterface == GlxPlatformInterface) {
m_supportsGLSL = m_extensions.contains("GL_ARB_shader_objects") &&
m_extensions.contains("GL_ARB_fragment_shader") &&
m_extensions.contains("GL_ARB_vertex_shader");
m_textureNPOT = m_extensions.contains("GL_ARB_texture_non_power_of_two");
}
m_serverVersion = getXServerVersion();
m_kernelVersion = getKernelVersion();
m_glslVersion = 0;
m_glsl_version.clear();
if (m_supportsGLSL) {
// Parse the GLSL version
m_glsl_version = (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION);
m_glslVersion = parseVersionString(m_glsl_version);
}
m_chipset = QByteArrayLiteral("Unknown");
m_preferBufferSubData = false;
// Mesa classic drivers
// ====================================================
// Radeon
if (m_renderer.startsWith("Mesa DRI R")) {
// Sample renderer string: Mesa DRI R600 (RV740 94B3) 20090101 x86/MMX/SSE2 TCL DRI2
const QList<QByteArray> tokens = m_renderer.split(' ');
const QByteArray chipClass = tokens.at(2);
m_chipset = tokens.at(3).mid(1, -1); // Strip the leading '('
if (chipClass == "R100")
// Vendor: Tungsten Graphics, Inc.
m_driver = Driver_R100;
else if (chipClass == "R200")
// Vendor: Tungsten Graphics, Inc.
m_driver = Driver_R200;
else if (chipClass == "R300")
// Vendor: DRI R300 Project
m_driver = Driver_R300C;
else if (chipClass == "R600")
// Vendor: Advanced Micro Devices, Inc.
m_driver = Driver_R600C;
m_chipClass = detectRadeonClass(m_chipset);
}
// Intel
else if (m_renderer.contains("Intel")) {
// Vendor: Tungsten Graphics, Inc.
// Sample renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset GEM 20100328 2010Q1
QByteArray chipset;
if (m_renderer.startsWith("Intel(R) Integrated Graphics Device"))
chipset = "IGD";
else
chipset = m_renderer;
m_driver = Driver_Intel;
m_chipClass = detectIntelClass(chipset);
}
// Gallium drivers
// ====================================================
else if (m_renderer.contains("Gallium")) {
// Sample renderer string: Gallium 0.4 on AMD RV740
const QList<QByteArray> tokens = m_renderer.split(' ');
m_galliumVersion = parseVersionString(tokens.at(1));
m_chipset = (tokens.at(3) == "AMD" || tokens.at(3) == "ATI") ?
tokens.at(4) : tokens.at(3);
// R300G
if (m_vendor == QByteArrayLiteral("X.Org R300 Project")) {
m_chipClass = detectRadeonClass(m_chipset);
m_driver = Driver_R300G;
}
// R600G
else if (m_vendor == "X.Org" &&
(m_renderer.contains("R6") ||
m_renderer.contains("R7") ||
m_renderer.contains("RV6") ||
m_renderer.contains("RV7") ||
m_renderer.contains("RS780") ||
m_renderer.contains("RS880") ||
m_renderer.contains("CEDAR") ||
m_renderer.contains("REDWOOD") ||
m_renderer.contains("JUNIPER") ||
m_renderer.contains("CYPRESS") ||
m_renderer.contains("HEMLOCK") ||
m_renderer.contains("PALM") ||
m_renderer.contains("EVERGREEN") ||
m_renderer.contains("SUMO") ||
m_renderer.contains("SUMO2") ||
m_renderer.contains("BARTS") ||
m_renderer.contains("TURKS") ||
m_renderer.contains("CAICOS") ||
m_renderer.contains("CAYMAN"))) {
m_chipClass = detectRadeonClass(m_chipset);
m_driver = Driver_R600G;
}
// Nouveau
else if (m_vendor == "nouveau") {
m_chipClass = detectNVidiaClass(m_chipset);
m_driver = Driver_Nouveau;
}
// softpipe
else if (m_vendor == "VMware, Inc." && m_chipset == "softpipe" ) {
m_driver = Driver_Softpipe;
}
// llvmpipe
else if (m_vendor == "VMware, Inc." && m_chipset == "llvmpipe") {
m_driver = Driver_Llvmpipe;
}
// SVGA3D
else if (m_vendor == "VMware, Inc." && m_chipset.contains("SVGA3D")) {
m_driver = Driver_VMware;
}
}
// Properietary drivers
// ====================================================
else if (m_vendor == "ATI Technologies Inc.") {
m_chipClass = detectRadeonClass(m_renderer);
m_driver = Driver_Catalyst;
if (versionTokens.count() > 1 && versionTokens.at(2)[0] == '(')
m_driverVersion = parseVersionString(versionTokens.at(1));
else if (versionTokens.count() > 0)
m_driverVersion = parseVersionString(versionTokens.at(0));
else
m_driverVersion = 0;
}
else if (m_vendor == "NVIDIA Corporation") {
m_chipClass = detectNVidiaClass(m_renderer);
m_driver = Driver_NVidia;
int index = versionTokens.indexOf("NVIDIA");
if (versionTokens.count() > index)
m_driverVersion = parseVersionString(versionTokens.at(index + 1));
else
m_driverVersion = 0;
}
else if (m_renderer == "Software Rasterizer") {
m_driver = Driver_Swrast;
}
// Virtual Hardware
// ====================================================
else if (m_vendor == "Humper" && m_renderer == "Chromium") {
// Virtual Box
m_driver = Driver_VirtualBox;
const int index = versionTokens.indexOf("Chromium");
if (versionTokens.count() > index)
m_driverVersion = parseVersionString(versionTokens.at(index + 1));
else
m_driverVersion = 0;
}
// Driver/GPU specific features
// ====================================================
if (isRadeon()) {
// R200 technically has a programmable pipeline, but since it's SM 1.4,
// it's too limited to to be of any practical value to us.
if (m_chipClass < R300)
m_supportsGLSL = false;
m_limitedGLSL = false;
m_limitedNPOT = false;
if (m_chipClass < R600) {
if (driver() == Driver_Catalyst)
m_textureNPOT = m_limitedNPOT = false; // Software fallback
else if (driver() == Driver_R300G)
m_limitedNPOT = m_textureNPOT;
m_limitedGLSL = m_supportsGLSL;
}
if (m_chipClass < R300) {
// fallback to XRender for R100 and R200
m_recommendedCompositor = XRenderCompositing;
} else if (m_chipClass < R600) {
// XRender due to NPOT limitations not supported by KWin's shaders
m_recommendedCompositor = XRenderCompositing;
} else {
m_recommendedCompositor = OpenGL2Compositing;
}
if (driver() == Driver_R600G ||
(driver() == Driver_R600C && m_renderer.contains("DRI2"))) {
m_looseBinding = true;
}
}
if (isNvidia()) {
if (m_driver == Driver_NVidia && m_chipClass < NV40)
m_supportsGLSL = false; // High likelihood of software emulation
if (m_driver == Driver_NVidia) {
m_looseBinding = true;
m_preferBufferSubData = true;
}
if (m_chipClass < NV40) {
m_recommendedCompositor = XRenderCompositing;
} else {
m_recommendedCompositor = OpenGL2Compositing;
}
m_limitedNPOT = m_textureNPOT && m_chipClass < NV40;
m_limitedGLSL = m_supportsGLSL && m_chipClass < G80;
}
if (isIntel()) {
if (m_chipClass < I915)
m_supportsGLSL = false;
m_limitedGLSL = m_supportsGLSL && m_chipClass < I965;
// see https://bugs.freedesktop.org/show_bug.cgi?id=80349#c1
m_looseBinding = false;
if (m_chipClass < I915) {
m_recommendedCompositor = XRenderCompositing;
} else {
m_recommendedCompositor = OpenGL2Compositing;
}
}
if (isMesaDriver() && platformInterface == EglPlatformInterface) {
// According to the reference implementation in
// mesa/demos/src/egl/opengles1/texture_from_pixmap
// the mesa egl implementation does not require a strict binding (so far).
m_looseBinding = true;
}
if (isSoftwareEmulation()) {
if (m_driver < Driver_Llvmpipe) {
// we recommend XRender
m_recommendedCompositor = XRenderCompositing;
// Software emulation does not provide GLSL
m_limitedGLSL = m_supportsGLSL = false;
} else {
// llvmpipe does support GLSL
m_recommendedCompositor = OpenGL2Compositing;
m_limitedGLSL = false;
m_supportsGLSL = true;
}
}
if (m_chipClass == UnknownChipClass && m_driver == Driver_Unknown) {
// we don't know the hardware. Let's be optimistic and assume OpenGL compatible hardware
m_recommendedCompositor = OpenGL2Compositing;
m_supportsGLSL = true;
}
if (isVirtualBox()) {
m_virtualMachine = true;
m_recommendedCompositor = OpenGL2Compositing;
}
if (isVMware()) {
m_virtualMachine = true;
m_recommendedCompositor = OpenGL2Compositing;
}
// and force back to shader supported on gles, we wouldn't have got a context if not supported
if (isGLES()) {
m_supportsGLSL = true;
m_limitedGLSL = false;
}
}
static void print(const QByteArray &label, const QByteArray &setting)
{
std::cout << std::setw(40) << std::left
<< label.data() << setting.data() << std::endl;
}
void GLPlatform::printResults() const
{
print(QByteArrayLiteral("OpenGL vendor string:"), m_vendor);
print(QByteArrayLiteral("OpenGL renderer string:"), m_renderer);
print(QByteArrayLiteral("OpenGL version string:"), m_version);
if (m_supportsGLSL)
print(QByteArrayLiteral("OpenGL shading language version string:"), m_glsl_version);
print(QByteArrayLiteral("Driver:"), driverToString8(m_driver));
if (!isMesaDriver())
print(QByteArrayLiteral("Driver version:"), versionToString8(m_driverVersion));
print(QByteArrayLiteral("GPU class:"), chipClassToString8(m_chipClass));
print(QByteArrayLiteral("OpenGL version:"), versionToString8(m_glVersion));
if (m_supportsGLSL)
print(QByteArrayLiteral("GLSL version:"), versionToString8(m_glslVersion));
if (isMesaDriver())
print(QByteArrayLiteral("Mesa version:"), versionToString8(mesaVersion()));
//if (galliumVersion() > 0)
// print("Gallium version:", versionToString(m_galliumVersion));
if (serverVersion() > 0)
print(QByteArrayLiteral("X server version:"), versionToString8(m_serverVersion));
if (kernelVersion() > 0)
print(QByteArrayLiteral("Linux kernel version:"), versionToString8(m_kernelVersion));
print(QByteArrayLiteral("Requires strict binding:"), !m_looseBinding ? QByteArrayLiteral("yes") : QByteArrayLiteral("no"));
print(QByteArrayLiteral("GLSL shaders:"), m_supportsGLSL ? (m_limitedGLSL ? QByteArrayLiteral("limited") : QByteArrayLiteral("yes")) : QByteArrayLiteral("no"));
print(QByteArrayLiteral("Texture NPOT support:"), m_textureNPOT ? (m_limitedNPOT ? QByteArrayLiteral("limited") : QByteArrayLiteral("yes")) : QByteArrayLiteral("no"));
print(QByteArrayLiteral("Virtual Machine:"), m_virtualMachine ? QByteArrayLiteral("yes") : QByteArrayLiteral("no"));
}
bool GLPlatform::supports(GLFeature feature) const
{
switch(feature) {
case LooseBinding:
return m_looseBinding;
case GLSL:
return m_supportsGLSL;
case LimitedGLSL:
return m_limitedGLSL;
case TextureNPOT:
return m_textureNPOT;
case LimitedNPOT:
return m_limitedNPOT;
default:
return false;
}
}
qint64 GLPlatform::glVersion() const
{
return m_glVersion;
}
qint64 GLPlatform::glslVersion() const
{
return m_glslVersion;
}
qint64 GLPlatform::mesaVersion() const
{
return m_mesaVersion;
}
qint64 GLPlatform::galliumVersion() const
{
return m_galliumVersion;
}
qint64 GLPlatform::serverVersion() const
{
return m_serverVersion;
}
qint64 GLPlatform::kernelVersion() const
{
return m_kernelVersion;
}
qint64 GLPlatform::driverVersion() const
{
if (isMesaDriver())
return mesaVersion();
return m_driverVersion;
}
Driver GLPlatform::driver() const
{
return m_driver;
}
ChipClass GLPlatform::chipClass() const
{
return m_chipClass;
}
bool GLPlatform::isMesaDriver() const
{
return mesaVersion() > 0;
}
bool GLPlatform::isGalliumDriver() const
{
return galliumVersion() > 0;
}
bool GLPlatform::isRadeon() const
{
return m_chipClass >= R100 && m_chipClass <= UnknownRadeon;
}
bool GLPlatform::isNvidia() const
{
return m_chipClass >= NV10 && m_chipClass <= UnknownNVidia;
}
bool GLPlatform::isIntel() const
{
return m_chipClass >= I8XX && m_chipClass <= UnknownIntel;
}
bool GLPlatform::isVirtualBox() const
{
return m_driver == Driver_VirtualBox;
}
bool GLPlatform::isVMware() const
{
return m_driver == Driver_VMware;
}
bool GLPlatform::isSoftwareEmulation() const
{
return m_driver == Driver_Softpipe || m_driver == Driver_Swrast || m_driver == Driver_Llvmpipe;
}
const QByteArray &GLPlatform::glRendererString() const
{
return m_renderer;
}
const QByteArray &GLPlatform::glVendorString() const
{
return m_vendor;
}
const QByteArray &GLPlatform::glVersionString() const
{
return m_version;
}
const QByteArray &GLPlatform::glShadingLanguageVersionString() const
{
return m_glsl_version;
}
bool GLPlatform::isLooseBinding() const
{
return m_looseBinding;
}
bool GLPlatform::isVirtualMachine() const
{
return m_virtualMachine;
}
CompositingType GLPlatform::recommendedCompositor() const
{
return m_recommendedCompositor;
}
bool GLPlatform::preferBufferSubData() const
{
return m_preferBufferSubData;
}
OpenGLPlatformInterface GLPlatform::platformInterface() const
{
return m_platformInterface;
}
bool GLPlatform::isGLES() const
{
return m_gles;
}
void GLPlatform::cleanup()
{
delete s_platform;
s_platform = nullptr;
}
} // namespace KWin
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