c24e315a9b
It doesn't make much sense any more as we do no longer link EGL since the switch to epoxy. And epoxy pulls it in at runtime if needed. Even more on Wayland it's just plain stupid to have EGL disabled. So removing the option just simplifies our code base without any disadvantages. REVIEW: 124695
2512 lines
84 KiB
C++
2512 lines
84 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2006-2007 Rivo Laks <rivolaks@hot.ee>
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Copyright (C) 2010, 2011 Martin Gräßlin <mgraesslin@kde.org>
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This program 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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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "kwinglutils.h"
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// need to call GLTexturePrivate::initStatic()
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#include "kwingltexture_p.h"
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#include "kwinglcolorcorrection.h"
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#include "kwineffects.h"
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#include "kwinglplatform.h"
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#include "logging_p.h"
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#include <QPixmap>
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#include <QImage>
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#include <QHash>
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#include <QFile>
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#include <QVector2D>
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#include <QVector3D>
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#include <QVector4D>
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#include <QMatrix4x4>
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#include <QVarLengthArray>
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#include <array>
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#include <deque>
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#include <math.h>
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#define DEBUG_GLRENDERTARGET 0
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#define MAKE_GL_VERSION(major, minor, release) ( ((major) << 16) | ((minor) << 8) | (release) )
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#ifdef __GNUC__
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# define likely(x) __builtin_expect(!!(x), 1)
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# define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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# define likely(x) (x)
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# define unlikely(x) (x)
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#endif
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namespace KWin
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{
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// Variables
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// GL version, use MAKE_GL_VERSION() macro for comparing with a specific version
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static int glVersion;
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// GLX version, use MAKE_GL_VERSION() macro for comparing with a specific version
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static int glXVersion;
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// EGL version, use MAKE_GL_VERSION() macro for comparing with a specific version
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static int eglVersion;
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// List of all supported GL, EGL and GLX extensions
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static QList<QByteArray> glExtensions;
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static QList<QByteArray> glxExtensions;
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static QList<QByteArray> eglExtensions;
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int glTextureUnitsCount;
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// Functions
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void initGLX()
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{
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#ifndef KWIN_HAVE_OPENGLES
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// Get GLX version
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int major, minor;
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glXQueryVersion(display(), &major, &minor);
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glXVersion = MAKE_GL_VERSION(major, minor, 0);
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// Get list of supported GLX extensions
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const QByteArray string = (const char *) glXQueryExtensionsString(display(), QX11Info::appScreen());
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glxExtensions = string.split(' ');
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glxResolveFunctions();
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#endif
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}
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void initEGL()
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{
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EGLDisplay dpy = eglGetCurrentDisplay();
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int major, minor;
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eglInitialize(dpy, &major, &minor);
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eglVersion = MAKE_GL_VERSION(major, minor, 0);
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const QByteArray string = eglQueryString(dpy, EGL_EXTENSIONS);
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eglExtensions = string.split(' ');
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eglResolveFunctions();
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}
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void initGL(OpenGLPlatformInterface platformInterface)
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{
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// Get OpenGL version
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QString glversionstring = QString::fromUtf8((const char*)glGetString(GL_VERSION));
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if (glversionstring.startsWith(QLatin1String("OpenGL ES "))) {
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glversionstring = glversionstring.mid(10);
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}
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QStringList glversioninfo = glversionstring.left(glversionstring.indexOf(QStringLiteral(" "))).split(QStringLiteral("."));
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while (glversioninfo.count() < 3)
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glversioninfo << QStringLiteral("0");
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glVersion = MAKE_GL_VERSION(glversioninfo[0].toInt(), glversioninfo[1].toInt(), glversioninfo[2].toInt());
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// Get list of supported OpenGL extensions
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if (hasGLVersion(3, 0)) {
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int count;
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glGetIntegerv(GL_NUM_EXTENSIONS, &count);
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for (int i = 0; i < count; i++) {
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const QByteArray name = (const char *) glGetStringi(GL_EXTENSIONS, i);
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glExtensions << name;
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}
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} else
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glExtensions = QByteArray((const char*)glGetString(GL_EXTENSIONS)).split(' ');
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// handle OpenGL extensions functions
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glResolveFunctions(platformInterface);
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GLTexturePrivate::initStatic();
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GLRenderTarget::initStatic();
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GLVertexBuffer::initStatic();
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}
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void cleanupGL()
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{
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ShaderManager::cleanup();
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GLTexturePrivate::cleanup();
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GLRenderTarget::cleanup();
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GLVertexBuffer::cleanup();
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GLPlatform::cleanup();
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glExtensions.clear();
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glxExtensions.clear();
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eglExtensions.clear();
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glVersion = 0;
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glXVersion = 0;
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eglVersion = 0;
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glTextureUnitsCount = 0;
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}
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bool hasGLVersion(int major, int minor, int release)
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{
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return glVersion >= MAKE_GL_VERSION(major, minor, release);
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}
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bool hasGLXVersion(int major, int minor, int release)
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{
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return glXVersion >= MAKE_GL_VERSION(major, minor, release);
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}
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bool hasEGLVersion(int major, int minor, int release)
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{
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return eglVersion >= MAKE_GL_VERSION(major, minor, release);
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}
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bool hasGLExtension(const QByteArray &extension)
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{
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return glExtensions.contains(extension) || glxExtensions.contains(extension) || eglExtensions.contains(extension);
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}
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static QString formatGLError(GLenum err)
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{
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switch(err) {
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case GL_NO_ERROR: return QStringLiteral("GL_NO_ERROR");
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case GL_INVALID_ENUM: return QStringLiteral("GL_INVALID_ENUM");
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case GL_INVALID_VALUE: return QStringLiteral("GL_INVALID_VALUE");
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case GL_INVALID_OPERATION: return QStringLiteral("GL_INVALID_OPERATION");
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#ifndef KWIN_HAVE_OPENGLES
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case GL_STACK_OVERFLOW: return QStringLiteral("GL_STACK_OVERFLOW");
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case GL_STACK_UNDERFLOW: return QStringLiteral("GL_STACK_UNDERFLOW");
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#endif
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case GL_OUT_OF_MEMORY: return QStringLiteral("GL_OUT_OF_MEMORY");
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default: return QStringLiteral("0x") + QString::number(err, 16);
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}
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}
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bool checkGLError(const char* txt)
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{
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GLenum err = glGetError();
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bool hasError = false;
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while (err != GL_NO_ERROR) {
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qCWarning(LIBKWINGLUTILS) << "GL error (" << txt << "): " << formatGLError(err);
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hasError = true;
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err = glGetError();
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}
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return hasError;
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}
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int nearestPowerOfTwo(int x)
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{
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// This method had been copied from Qt's nearest_gl_texture_size()
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int n = 0, last = 0;
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for (int s = 0; s < 32; ++s) {
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if (((x >> s) & 1) == 1) {
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++n;
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last = s;
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}
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}
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if (n > 1)
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return 1 << (last + 1);
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return 1 << last;
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}
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//****************************************
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// GLShader
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//****************************************
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bool GLShader::sColorCorrect = false;
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GLShader::GLShader(unsigned int flags)
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: mValid(false)
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, mLocationsResolved(false)
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, mExplicitLinking(flags & ExplicitLinking)
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{
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mProgram = glCreateProgram();
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}
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GLShader::GLShader(const QString& vertexfile, const QString& fragmentfile, unsigned int flags)
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: mValid(false)
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, mLocationsResolved(false)
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, mExplicitLinking(flags & ExplicitLinking)
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{
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mProgram = glCreateProgram();
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loadFromFiles(vertexfile, fragmentfile);
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}
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GLShader::~GLShader()
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{
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if (mProgram) {
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glDeleteProgram(mProgram);
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}
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}
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bool GLShader::loadFromFiles(const QString &vertexFile, const QString &fragmentFile)
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{
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QFile vf(vertexFile);
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if (!vf.open(QIODevice::ReadOnly)) {
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qCCritical(LIBKWINGLUTILS) << "Couldn't open" << vertexFile << "for reading!";
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return false;
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}
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const QByteArray vertexSource = vf.readAll();
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QFile ff(fragmentFile);
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if (!ff.open(QIODevice::ReadOnly)) {
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qCCritical(LIBKWINGLUTILS) << "Couldn't open" << fragmentFile << "for reading!";
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return false;
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}
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const QByteArray fragmentSource = ff.readAll();
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return load(vertexSource, fragmentSource);
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}
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bool GLShader::link()
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{
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// Be optimistic
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mValid = true;
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glLinkProgram(mProgram);
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// Get the program info log
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int maxLength, length;
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glGetProgramiv(mProgram, GL_INFO_LOG_LENGTH, &maxLength);
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QByteArray log(maxLength, 0);
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glGetProgramInfoLog(mProgram, maxLength, &length, log.data());
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// Make sure the program linked successfully
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int status;
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glGetProgramiv(mProgram, GL_LINK_STATUS, &status);
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if (status == 0) {
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qCCritical(LIBKWINGLUTILS) << "Failed to link shader:" << endl << log;
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mValid = false;
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} else if (length > 0) {
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qCDebug(LIBKWINGLUTILS) << "Shader link log:" << log;
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}
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return mValid;
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}
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const QByteArray GLShader::prepareSource(GLenum shaderType, const QByteArray &source) const
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{
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// Prepare the source code
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QByteArray ba;
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#ifdef KWIN_HAVE_OPENGLES
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if (GLPlatform::instance()->glslVersion() < kVersionNumber(3, 0)) {
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ba.append("precision highp float;\n");
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}
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#endif
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if (ShaderManager::instance()->isShaderDebug()) {
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ba.append("#define KWIN_SHADER_DEBUG 1\n");
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}
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ba.append(source);
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#ifdef KWIN_HAVE_OPENGLES
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if (GLPlatform::instance()->glslVersion() >= kVersionNumber(3, 0)) {
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ba.replace("#version 140", "#version 300 es\n\nprecision highp float;\n");
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}
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#endif
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// Inject color correction code for fragment shaders, if possible
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if (shaderType == GL_FRAGMENT_SHADER && sColorCorrect)
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ba = ColorCorrection::prepareFragmentShader(ba);
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return ba;
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}
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bool GLShader::compile(GLuint program, GLenum shaderType, const QByteArray &source) const
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{
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GLuint shader = glCreateShader(shaderType);
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QByteArray preparedSource = prepareSource(shaderType, source);
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const char* src = preparedSource.constData();
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glShaderSource(shader, 1, &src, nullptr);
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// Compile the shader
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glCompileShader(shader);
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// Get the shader info log
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int maxLength, length;
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glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &maxLength);
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QByteArray log(maxLength, 0);
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glGetShaderInfoLog(shader, maxLength, &length, log.data());
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// Check the status
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int status;
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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if (status == 0) {
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const char *typeName = (shaderType == GL_VERTEX_SHADER ? "vertex" : "fragment");
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qCCritical(LIBKWINGLUTILS) << "Failed to compile" << typeName << "shader:" << endl << log;
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} else if (length > 0)
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qCDebug(LIBKWINGLUTILS) << "Shader compile log:" << log;
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if (status != 0)
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glAttachShader(program, shader);
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glDeleteShader(shader);
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return status != 0;
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}
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bool GLShader::load(const QByteArray &vertexSource, const QByteArray &fragmentSource)
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{
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#ifndef KWIN_HAVE_OPENGLES
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// Make sure shaders are actually supported
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if (!GLPlatform::instance()->supports(GLSL) || GLPlatform::instance()->supports(LimitedNPOT)) {
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qCCritical(LIBKWINGLUTILS) << "Shaders are not supported";
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return false;
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}
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#endif
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mValid = false;
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// Compile the vertex shader
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if (!vertexSource.isEmpty()) {
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bool success = compile(mProgram, GL_VERTEX_SHADER, vertexSource);
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if (!success)
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return false;
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}
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// Compile the fragment shader
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if (!fragmentSource.isEmpty()) {
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bool success = compile(mProgram, GL_FRAGMENT_SHADER, fragmentSource);
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if (!success)
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return false;
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}
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if (mExplicitLinking)
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return true;
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// link() sets mValid
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return link();
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}
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void GLShader::bindAttributeLocation(const char *name, int index)
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{
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glBindAttribLocation(mProgram, index, name);
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}
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void GLShader::bindFragDataLocation(const char *name, int index)
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{
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#ifndef KWIN_HAVE_OPENGLES
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if (hasGLVersion(3, 0) || hasGLExtension(QByteArrayLiteral("GL_EXT_gpu_shader4")))
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glBindFragDataLocation(mProgram, index, name);
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#else
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Q_UNUSED(name)
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Q_UNUSED(index)
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#endif
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}
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void GLShader::bind()
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{
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glUseProgram(mProgram);
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}
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void GLShader::unbind()
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{
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glUseProgram(0);
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}
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void GLShader::resolveLocations()
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{
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if (mLocationsResolved)
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return;
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mMatrixLocation[TextureMatrix] = uniformLocation("textureMatrix");
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mMatrixLocation[ProjectionMatrix] = uniformLocation("projection");
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mMatrixLocation[ModelViewMatrix] = uniformLocation("modelview");
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mMatrixLocation[ModelViewProjectionMatrix] = uniformLocation("modelViewProjectionMatrix");
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mMatrixLocation[WindowTransformation] = uniformLocation("windowTransformation");
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mMatrixLocation[ScreenTransformation] = uniformLocation("screenTransformation");
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mVec2Location[Offset] = uniformLocation("offset");
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mVec4Location[ModulationConstant] = uniformLocation("modulation");
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mFloatLocation[Saturation] = uniformLocation("saturation");
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mIntLocation[ColorCorrectionLookupTextureUnit] = uniformLocation("u_ccLookupTexture");
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mColorLocation[Color] = uniformLocation("geometryColor");
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mLocationsResolved = true;
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}
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int GLShader::uniformLocation(const char *name)
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{
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const int location = glGetUniformLocation(mProgram, name);
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return location;
|
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}
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bool GLShader::setUniform(GLShader::MatrixUniform uniform, const QMatrix4x4 &matrix)
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{
|
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resolveLocations();
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return setUniform(mMatrixLocation[uniform], matrix);
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}
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bool GLShader::setUniform(GLShader::Vec2Uniform uniform, const QVector2D &value)
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{
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resolveLocations();
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return setUniform(mVec2Location[uniform], value);
|
|
}
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bool GLShader::setUniform(GLShader::Vec4Uniform uniform, const QVector4D &value)
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{
|
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resolveLocations();
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return setUniform(mVec4Location[uniform], value);
|
|
}
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bool GLShader::setUniform(GLShader::FloatUniform uniform, float value)
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{
|
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resolveLocations();
|
|
return setUniform(mFloatLocation[uniform], value);
|
|
}
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bool GLShader::setUniform(GLShader::IntUniform uniform, int value)
|
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{
|
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resolveLocations();
|
|
return setUniform(mIntLocation[uniform], value);
|
|
}
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|
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bool GLShader::setUniform(GLShader::ColorUniform uniform, const QVector4D &value)
|
|
{
|
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resolveLocations();
|
|
return setUniform(mColorLocation[uniform], value);
|
|
}
|
|
|
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bool GLShader::setUniform(GLShader::ColorUniform uniform, const QColor &value)
|
|
{
|
|
resolveLocations();
|
|
return setUniform(mColorLocation[uniform], value);
|
|
}
|
|
|
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bool GLShader::setUniform(const char *name, float value)
|
|
{
|
|
const int location = uniformLocation(name);
|
|
return setUniform(location, value);
|
|
}
|
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|
|
bool GLShader::setUniform(const char *name, int value)
|
|
{
|
|
const int location = uniformLocation(name);
|
|
return setUniform(location, value);
|
|
}
|
|
|
|
bool GLShader::setUniform(const char *name, const QVector2D& value)
|
|
{
|
|
const int location = uniformLocation(name);
|
|
return setUniform(location, value);
|
|
}
|
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|
|
bool GLShader::setUniform(const char *name, const QVector3D& value)
|
|
{
|
|
const int location = uniformLocation(name);
|
|
return setUniform(location, value);
|
|
}
|
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|
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bool GLShader::setUniform(const char *name, const QVector4D& value)
|
|
{
|
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const int location = uniformLocation(name);
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return setUniform(location, value);
|
|
}
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bool GLShader::setUniform(const char *name, const QMatrix4x4& value)
|
|
{
|
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const int location = uniformLocation(name);
|
|
return setUniform(location, value);
|
|
}
|
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|
|
bool GLShader::setUniform(const char *name, const QColor& color)
|
|
{
|
|
const int location = uniformLocation(name);
|
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return setUniform(location, color);
|
|
}
|
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|
|
bool GLShader::setUniform(int location, float value)
|
|
{
|
|
if (location >= 0) {
|
|
glUniform1f(location, value);
|
|
}
|
|
return (location >= 0);
|
|
}
|
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|
|
bool GLShader::setUniform(int location, int value)
|
|
{
|
|
if (location >= 0) {
|
|
glUniform1i(location, value);
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
bool GLShader::setUniform(int location, const QVector2D &value)
|
|
{
|
|
if (location >= 0) {
|
|
glUniform2fv(location, 1, (const GLfloat*)&value);
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
bool GLShader::setUniform(int location, const QVector3D &value)
|
|
{
|
|
if (location >= 0) {
|
|
glUniform3fv(location, 1, (const GLfloat*)&value);
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
bool GLShader::setUniform(int location, const QVector4D &value)
|
|
{
|
|
if (location >= 0) {
|
|
glUniform4fv(location, 1, (const GLfloat*)&value);
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
bool GLShader::setUniform(int location, const QMatrix4x4 &value)
|
|
{
|
|
if (location >= 0) {
|
|
GLfloat m[16];
|
|
const auto *data = value.constData();
|
|
// i is column, j is row for m
|
|
for (int i = 0; i < 16; ++i) {
|
|
m[i] = data[i];
|
|
}
|
|
glUniformMatrix4fv(location, 1, GL_FALSE, m);
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
bool GLShader::setUniform(int location, const QColor &color)
|
|
{
|
|
if (location >= 0) {
|
|
glUniform4f(location, color.redF(), color.greenF(), color.blueF(), color.alphaF());
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
int GLShader::attributeLocation(const char* name)
|
|
{
|
|
int location = glGetAttribLocation(mProgram, name);
|
|
return location;
|
|
}
|
|
|
|
bool GLShader::setAttribute(const char* name, float value)
|
|
{
|
|
int location = attributeLocation(name);
|
|
if (location >= 0) {
|
|
glVertexAttrib1f(location, value);
|
|
}
|
|
return (location >= 0);
|
|
}
|
|
|
|
QMatrix4x4 GLShader::getUniformMatrix4x4(const char* name)
|
|
{
|
|
int location = uniformLocation(name);
|
|
if (location >= 0) {
|
|
GLfloat m[16];
|
|
glGetnUniformfv(mProgram, location, sizeof(m), m);
|
|
QMatrix4x4 matrix(m[0], m[4], m[8], m[12],
|
|
m[1], m[5], m[9], m[13],
|
|
m[2], m[6], m[10], m[14],
|
|
m[3], m[7], m[11], m[15]);
|
|
matrix.optimize();
|
|
return matrix;
|
|
} else {
|
|
return QMatrix4x4();
|
|
}
|
|
}
|
|
|
|
//****************************************
|
|
// ShaderManager
|
|
//****************************************
|
|
ShaderManager *ShaderManager::s_shaderManager = nullptr;
|
|
QSize ShaderManager::s_virtualScreenSize;
|
|
|
|
ShaderManager *ShaderManager::instance()
|
|
{
|
|
if (!s_shaderManager) {
|
|
s_shaderManager = new ShaderManager();
|
|
s_shaderManager->initShaders();
|
|
s_shaderManager->m_inited = true;
|
|
}
|
|
return s_shaderManager;
|
|
}
|
|
|
|
void ShaderManager::cleanup()
|
|
{
|
|
delete s_shaderManager;
|
|
s_shaderManager = nullptr;
|
|
}
|
|
|
|
ShaderManager::ShaderManager()
|
|
: m_inited(false)
|
|
, m_valid(false)
|
|
{
|
|
for (int i = 0; i < 3; i++)
|
|
m_shader[i] = 0;
|
|
|
|
m_debug = qstrcmp(qgetenv("KWIN_GL_DEBUG"), "1") == 0;
|
|
}
|
|
|
|
ShaderManager::~ShaderManager()
|
|
{
|
|
while (!m_boundShaders.isEmpty()) {
|
|
popShader();
|
|
}
|
|
|
|
for (int i = 0; i < 3; i++)
|
|
delete m_shader[i];
|
|
|
|
qDeleteAll(m_shaderHash);
|
|
m_shaderHash.clear();
|
|
}
|
|
|
|
static bool fuzzyCompare(const QVector4D &lhs, const QVector4D &rhs)
|
|
{
|
|
const float epsilon = 1.0f / 255.0f;
|
|
|
|
return lhs[0] >= rhs[0] - epsilon && lhs[0] <= rhs[0] + epsilon &&
|
|
lhs[1] >= rhs[1] - epsilon && lhs[1] <= rhs[1] + epsilon &&
|
|
lhs[2] >= rhs[2] - epsilon && lhs[2] <= rhs[2] + epsilon &&
|
|
lhs[3] >= rhs[3] - epsilon && lhs[3] <= rhs[3] + epsilon;
|
|
}
|
|
|
|
static bool checkPixel(int x, int y, const QVector4D &expected, const char *file, int line)
|
|
{
|
|
uint8_t data[4];
|
|
glReadnPixels(x, y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 4, data);
|
|
|
|
const QVector4D pixel{data[0] / 255.f, data[1] / 255.f, data[2] / 255.f, data[3] / 255.f};
|
|
|
|
if (fuzzyCompare(pixel, expected))
|
|
return true;
|
|
|
|
QMessageLogger(file, line, nullptr).warning() << "Pixel was" << pixel << "expected" << expected;
|
|
return false;
|
|
}
|
|
|
|
#define CHECK_PIXEL(x, y, expected) \
|
|
checkPixel(x, y, expected, __FILE__, __LINE__)
|
|
|
|
static QVector4D adjustSaturation(const QVector4D &color, float saturation)
|
|
{
|
|
const float gray = QVector3D::dotProduct(color.toVector3D(), {0.2126, 0.7152, 0.0722});
|
|
return QVector4D{gray, gray, gray, color.w()} * (1.0f - saturation) + color * saturation;
|
|
}
|
|
|
|
bool ShaderManager::selfTest()
|
|
{
|
|
bool pass = true;
|
|
|
|
if (!GLRenderTarget::supported()) {
|
|
qCWarning(LIBKWINGLUTILS) << "Framebuffer objects not supported - skipping shader tests";
|
|
return true;
|
|
}
|
|
|
|
// Create the source texture
|
|
QImage image(2, 2, QImage::Format_ARGB32_Premultiplied);
|
|
image.setPixel(0, 0, 0xffff0000); // Red
|
|
image.setPixel(1, 0, 0xff00ff00); // Green
|
|
image.setPixel(0, 1, 0xff0000ff); // Blue
|
|
image.setPixel(1, 1, 0xffffffff); // White
|
|
|
|
GLTexture src(image);
|
|
src.setFilter(GL_NEAREST);
|
|
|
|
// Create the render target
|
|
GLTexture dst(GL_RGBA8, 32, 32);
|
|
|
|
GLRenderTarget fbo(dst);
|
|
GLRenderTarget::pushRenderTarget(&fbo);
|
|
|
|
// Set up the vertex buffer
|
|
GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();
|
|
|
|
const GLVertexAttrib attribs[] {
|
|
{ VA_Position, 2, GL_FLOAT, offsetof(GLVertex2D, position) },
|
|
{ VA_TexCoord, 2, GL_FLOAT, offsetof(GLVertex2D, texcoord) },
|
|
};
|
|
|
|
vbo->setAttribLayout(attribs, 2, sizeof(GLVertex2D));
|
|
|
|
GLVertex2D *verts = (GLVertex2D*) vbo->map(6 * sizeof(GLVertex2D));
|
|
verts[0] = GLVertex2D{{0, 0}, {0, 0}}; // Top left
|
|
verts[1] = GLVertex2D{{0, 32}, {0, 1}}; // Bottom left
|
|
verts[2] = GLVertex2D{{32, 0}, {1, 0}}; // Top right
|
|
|
|
verts[3] = GLVertex2D{{32, 0}, {1, 0}}; // Top right
|
|
verts[4] = GLVertex2D{{0, 32}, {0, 1}}; // Bottom left
|
|
verts[5] = GLVertex2D{{32, 32}, {1, 1}}; // Bottom right
|
|
vbo->unmap();
|
|
|
|
vbo->bindArrays();
|
|
|
|
glViewport(0, 0, 32, 32);
|
|
glClearColor(0, 0, 0, 0);
|
|
|
|
// Set up the projection matrix
|
|
QMatrix4x4 matrix;
|
|
matrix.ortho(QRect(0, 0, 32, 32));
|
|
|
|
// Bind the source texture
|
|
src.bind();
|
|
|
|
const QVector4D red {1.0f, 0.0f, 0.0f, 1.0f};
|
|
const QVector4D green {0.0f, 1.0f, 0.0f, 1.0f};
|
|
const QVector4D blue {0.0f, 0.0f, 1.0f, 1.0f};
|
|
const QVector4D white {1.0f, 1.0f, 1.0f, 1.0f};
|
|
|
|
// Note: To see the line number in error messages, set
|
|
// QT_MESSAGE_PATTERN="%{message} (%{file}:%{line})"
|
|
|
|
// Test solid color
|
|
GLShader *shader = pushShader(ShaderTrait::UniformColor);
|
|
if (shader->isValid()) {
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
shader->setUniform(GLShader::ModelViewProjectionMatrix, matrix);
|
|
shader->setUniform(GLShader::Color, green);
|
|
vbo->draw(GL_TRIANGLES, 0, 6);
|
|
|
|
pass = CHECK_PIXEL(8, 24, green) && pass;
|
|
pass = CHECK_PIXEL(24, 24, green) && pass;
|
|
pass = CHECK_PIXEL(8, 8, green) && pass;
|
|
pass = CHECK_PIXEL(24, 8, green) && pass;
|
|
} else {
|
|
pass = false;
|
|
}
|
|
popShader();
|
|
|
|
// Test texture mapping
|
|
shader = pushShader(ShaderTrait::MapTexture);
|
|
if (shader->isValid()) {
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
shader->setUniform(GLShader::ModelViewProjectionMatrix, matrix);
|
|
vbo->draw(GL_TRIANGLES, 0, 6);
|
|
|
|
pass = CHECK_PIXEL(8, 24, red) && pass;
|
|
pass = CHECK_PIXEL(24, 24, green) && pass;
|
|
pass = CHECK_PIXEL(8, 8, blue) && pass;
|
|
pass = CHECK_PIXEL(24, 8, white) && pass;
|
|
} else {
|
|
pass = false;
|
|
}
|
|
popShader();
|
|
|
|
// Test saturation filter
|
|
shader = pushShader(ShaderTrait::MapTexture | ShaderTrait::AdjustSaturation);
|
|
if (shader->isValid()) {
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
const float saturation = .3;
|
|
|
|
shader->setUniform(GLShader::ModelViewProjectionMatrix, matrix);
|
|
shader->setUniform(GLShader::Saturation, saturation);
|
|
vbo->draw(GL_TRIANGLES, 0, 6);
|
|
|
|
pass = CHECK_PIXEL(8, 24, adjustSaturation(red, saturation)) && pass;
|
|
pass = CHECK_PIXEL(24, 24, adjustSaturation(green, saturation)) && pass;
|
|
pass = CHECK_PIXEL(8, 8, adjustSaturation(blue, saturation)) && pass;
|
|
pass = CHECK_PIXEL(24, 8, adjustSaturation(white, saturation)) && pass;
|
|
} else {
|
|
pass = false;
|
|
}
|
|
popShader();
|
|
|
|
// Test modulation filter
|
|
shader = pushShader(ShaderTrait::MapTexture | ShaderTrait::Modulate);
|
|
if (shader->isValid()) {
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
const QVector4D modulation{.3f, .4f, .5f, .6f};
|
|
|
|
shader->setUniform(GLShader::ModelViewProjectionMatrix, matrix);
|
|
shader->setUniform(GLShader::ModulationConstant, modulation);
|
|
vbo->draw(GL_TRIANGLES, 0, 6);
|
|
|
|
pass = CHECK_PIXEL(8, 24, red * modulation) && pass;
|
|
pass = CHECK_PIXEL(24, 24, green * modulation) && pass;
|
|
pass = CHECK_PIXEL(8, 8, blue * modulation) && pass;
|
|
pass = CHECK_PIXEL(24, 8, white * modulation) && pass;
|
|
} else {
|
|
pass = false;
|
|
}
|
|
popShader();
|
|
|
|
// Test saturation + modulation
|
|
shader = pushShader(ShaderTrait::MapTexture | ShaderTrait::AdjustSaturation | ShaderTrait::Modulate);
|
|
if (shader->isValid()) {
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
const QVector4D modulation{.3f, .4f, .5f, .6f};
|
|
const float saturation = .3;
|
|
|
|
shader->setUniform(GLShader::ModelViewProjectionMatrix, matrix);
|
|
shader->setUniform(GLShader::ModulationConstant, modulation);
|
|
shader->setUniform(GLShader::Saturation, saturation);
|
|
vbo->draw(GL_TRIANGLES, 0, 6);
|
|
|
|
pass = CHECK_PIXEL(8, 24, adjustSaturation(red * modulation, saturation)) && pass;
|
|
pass = CHECK_PIXEL(24, 24, adjustSaturation(green * modulation, saturation)) && pass;
|
|
pass = CHECK_PIXEL(8, 8, adjustSaturation(blue * modulation, saturation)) && pass;
|
|
pass = CHECK_PIXEL(24, 8, adjustSaturation(white * modulation, saturation)) && pass;
|
|
} else {
|
|
pass = false;
|
|
}
|
|
popShader();
|
|
|
|
vbo->unbindArrays();
|
|
GLRenderTarget::popRenderTarget();
|
|
|
|
return pass;
|
|
}
|
|
|
|
QByteArray ShaderManager::generateVertexSource(ShaderTraits traits) const
|
|
{
|
|
QByteArray source;
|
|
QTextStream stream(&source);
|
|
|
|
GLPlatform * const gl = GLPlatform::instance();
|
|
QByteArray attribute, varying;
|
|
|
|
if (!gl->isGLES()) {
|
|
const bool glsl_140 = gl->glslVersion() >= kVersionNumber(1, 40);
|
|
|
|
attribute = glsl_140 ? QByteArrayLiteral("in") : QByteArrayLiteral("attribute");
|
|
varying = glsl_140 ? QByteArrayLiteral("out") : QByteArrayLiteral("varying");
|
|
|
|
if (glsl_140)
|
|
stream << "#version 140\n\n";
|
|
} else {
|
|
const bool glsl_es_300 = gl->glslVersion() >= kVersionNumber(3, 0);
|
|
|
|
attribute = glsl_es_300 ? QByteArrayLiteral("in") : QByteArrayLiteral("attribute");
|
|
varying = glsl_es_300 ? QByteArrayLiteral("out") : QByteArrayLiteral("varying");
|
|
|
|
if (glsl_es_300)
|
|
stream << "#version 300 es\n\n";
|
|
}
|
|
|
|
stream << attribute << " vec4 position;\n";
|
|
if (traits & ShaderTrait::MapTexture) {
|
|
stream << attribute << " vec4 texcoord;\n\n";
|
|
stream << varying << " vec2 texcoord0;\n\n";
|
|
} else
|
|
stream << "\n";
|
|
|
|
stream << "uniform mat4 modelViewProjectionMatrix;\n\n";
|
|
|
|
stream << "void main()\n{\n";
|
|
if (traits & ShaderTrait::MapTexture)
|
|
stream << " texcoord0 = texcoord.st;\n";
|
|
|
|
stream << " gl_Position = modelViewProjectionMatrix * position;\n";
|
|
stream << "}\n";
|
|
|
|
stream.flush();
|
|
return source;
|
|
}
|
|
|
|
QByteArray ShaderManager::generateFragmentSource(ShaderTraits traits) const
|
|
{
|
|
QByteArray source;
|
|
QTextStream stream(&source);
|
|
|
|
GLPlatform * const gl = GLPlatform::instance();
|
|
QByteArray varying, output, textureLookup;
|
|
|
|
if (!gl->isGLES()) {
|
|
const bool glsl_140 = gl->glslVersion() >= kVersionNumber(1, 40);
|
|
|
|
if (glsl_140)
|
|
stream << "#version 140\n\n";
|
|
|
|
varying = glsl_140 ? QByteArrayLiteral("in") : QByteArrayLiteral("varying");
|
|
textureLookup = glsl_140 ? QByteArrayLiteral("texture") : QByteArrayLiteral("texture2D");
|
|
output = glsl_140 ? QByteArrayLiteral("fragColor") : QByteArrayLiteral("gl_FragColor");
|
|
} else {
|
|
const bool glsl_es_300 = GLPlatform::instance()->glslVersion() >= kVersionNumber(3, 0);
|
|
|
|
if (glsl_es_300)
|
|
stream << "#version 300 es\n\n";
|
|
|
|
// From the GLSL ES specification:
|
|
//
|
|
// "The fragment language has no default precision qualifier for floating point types."
|
|
stream << "precision highp float;\n\n";
|
|
|
|
varying = glsl_es_300 ? QByteArrayLiteral("in") : QByteArrayLiteral("varying");
|
|
textureLookup = glsl_es_300 ? QByteArrayLiteral("texture") : QByteArrayLiteral("texture2D");
|
|
output = glsl_es_300 ? QByteArrayLiteral("fragColor") : QByteArrayLiteral("gl_FragColor");
|
|
}
|
|
|
|
if (traits & ShaderTrait::MapTexture) {
|
|
stream << "uniform sampler2D sampler;\n";
|
|
|
|
if (traits & ShaderTrait::Modulate)
|
|
stream << "uniform vec4 modulation;\n";
|
|
if (traits & ShaderTrait::AdjustSaturation)
|
|
stream << "uniform float saturation;\n";
|
|
|
|
stream << "\n" << varying << " vec2 texcoord0;\n";
|
|
|
|
} else if (traits & ShaderTrait::UniformColor)
|
|
stream << "uniform vec4 geometryColor;\n";
|
|
|
|
if (output != QByteArrayLiteral("gl_FragColor"))
|
|
stream << "\nout vec4 " << output << ";\n";
|
|
|
|
stream << "\nvoid main(void)\n{\n";
|
|
if (traits & ShaderTrait::MapTexture) {
|
|
if (traits & (ShaderTrait::Modulate | ShaderTrait::AdjustSaturation)) {
|
|
stream << " vec4 texel = " << textureLookup << "(sampler, texcoord0);\n";
|
|
|
|
if (traits & ShaderTrait::Modulate)
|
|
stream << " texel *= modulation;\n";
|
|
if (traits & ShaderTrait::AdjustSaturation)
|
|
stream << " texel.rgb = mix(vec3(dot(texel.rgb, vec3(0.2126, 0.7152, 0.0722))), texel.rgb, saturation);\n";
|
|
|
|
stream << " " << output << " = texel;\n";
|
|
} else {
|
|
stream << " " << output << " = " << textureLookup << "(sampler, texcoord0);\n";
|
|
}
|
|
} else if (traits & ShaderTrait::UniformColor)
|
|
stream << " " << output << " = geometryColor;\n";
|
|
|
|
stream << "}";
|
|
stream.flush();
|
|
return source;
|
|
}
|
|
|
|
GLShader *ShaderManager::generateShader(ShaderTraits traits)
|
|
{
|
|
const QByteArray vertex = generateVertexSource(traits);
|
|
const QByteArray fragment = generateFragmentSource(traits);
|
|
|
|
#if 0
|
|
qCDebug(LIBKWINGLUTILS) << "**************";
|
|
qCDebug(LIBKWINGLUTILS) << vertex;
|
|
qCDebug(LIBKWINGLUTILS) << "**************";
|
|
qCDebug(LIBKWINGLUTILS) << fragment;
|
|
qCDebug(LIBKWINGLUTILS) << "**************";
|
|
#endif
|
|
|
|
GLShader *shader = new GLShader(GLShader::ExplicitLinking);
|
|
shader->load(vertex, fragment);
|
|
|
|
shader->bindAttributeLocation("position", VA_Position);
|
|
shader->bindAttributeLocation("texcoord", VA_TexCoord);
|
|
shader->bindFragDataLocation("fragColor", 0);
|
|
|
|
shader->link();
|
|
return shader;
|
|
}
|
|
|
|
GLShader *ShaderManager::shader(ShaderTraits traits)
|
|
{
|
|
GLShader *shader = m_shaderHash.value(traits);
|
|
|
|
if (!shader) {
|
|
shader = generateShader(traits);
|
|
m_shaderHash.insert(traits, shader);
|
|
}
|
|
|
|
return shader;
|
|
}
|
|
|
|
GLShader *ShaderManager::getBoundShader() const
|
|
{
|
|
if (m_boundShaders.isEmpty()) {
|
|
return nullptr;
|
|
} else {
|
|
return m_boundShaders.top();
|
|
}
|
|
}
|
|
|
|
bool ShaderManager::isShaderBound() const
|
|
{
|
|
return !m_boundShaders.isEmpty();
|
|
}
|
|
|
|
bool ShaderManager::isValid() const
|
|
{
|
|
return m_valid;
|
|
}
|
|
|
|
bool ShaderManager::isShaderDebug() const
|
|
{
|
|
return m_debug;
|
|
}
|
|
|
|
GLShader *ShaderManager::pushShader(ShaderTraits traits)
|
|
{
|
|
GLShader *shader = this->shader(traits);
|
|
pushShader(shader);
|
|
return shader;
|
|
}
|
|
|
|
GLShader *ShaderManager::pushShader(ShaderType type, bool reset)
|
|
{
|
|
if (m_inited && !m_valid) {
|
|
return nullptr;
|
|
}
|
|
|
|
pushShader(m_shader[type]);
|
|
if (reset) {
|
|
resetShader(type);
|
|
}
|
|
|
|
return m_shader[type];
|
|
}
|
|
|
|
void ShaderManager::resetAllShaders()
|
|
{
|
|
if (!m_inited || !m_valid) {
|
|
return;
|
|
}
|
|
|
|
for (int i = 0; i < 3; i++) {
|
|
pushShader(ShaderType(i), true);
|
|
popShader();
|
|
}
|
|
}
|
|
|
|
void ShaderManager::resetShader(GLShader *shader, ShaderType type)
|
|
{
|
|
if (!(shader && shader->isValid()))
|
|
return;
|
|
|
|
pushShader(shader);
|
|
resetShader(type);
|
|
popShader();
|
|
}
|
|
|
|
|
|
void ShaderManager::pushShader(GLShader *shader)
|
|
{
|
|
// only bind shader if it is not already bound
|
|
if (shader != getBoundShader()) {
|
|
shader->bind();
|
|
}
|
|
m_boundShaders.push(shader);
|
|
}
|
|
|
|
void ShaderManager::popShader()
|
|
{
|
|
if (m_boundShaders.isEmpty()) {
|
|
return;
|
|
}
|
|
GLShader *shader = m_boundShaders.pop();
|
|
if (m_boundShaders.isEmpty()) {
|
|
// no more shader bound - unbind
|
|
shader->unbind();
|
|
} else if (shader != m_boundShaders.top()) {
|
|
// only rebind if a different shader is on top of stack
|
|
m_boundShaders.top()->bind();
|
|
}
|
|
}
|
|
|
|
void ShaderManager::bindFragDataLocations(GLShader *shader)
|
|
{
|
|
shader->bindFragDataLocation("fragColor", 0);
|
|
}
|
|
|
|
void ShaderManager::bindAttributeLocations(GLShader *shader) const
|
|
{
|
|
shader->bindAttributeLocation("vertex", VA_Position);
|
|
shader->bindAttributeLocation("texCoord", VA_TexCoord);
|
|
}
|
|
|
|
GLShader *ShaderManager::loadFragmentShader(ShaderType vertex, const QString &fragmentFile)
|
|
{
|
|
const char *vertexFile[] = {
|
|
"scene-vertex.glsl",
|
|
"scene-generic-vertex.glsl",
|
|
"scene-color-vertex.glsl"
|
|
};
|
|
|
|
GLShader *shader = new GLShader(QString::fromUtf8(m_shaderDir + vertexFile[vertex]), fragmentFile, GLShader::ExplicitLinking);
|
|
bindAttributeLocations(shader);
|
|
bindFragDataLocations(shader);
|
|
shader->link();
|
|
|
|
if (shader->isValid()) {
|
|
pushShader(shader);
|
|
resetShader(vertex);
|
|
popShader();
|
|
}
|
|
|
|
return shader;
|
|
}
|
|
|
|
GLShader *ShaderManager::loadVertexShader(ShaderType fragment, const QString &vertexFile)
|
|
{
|
|
// The Simple and Generic shaders use same fragment shader
|
|
const char *fragmentFile[] = {
|
|
"scene-fragment.glsl",
|
|
"scene-fragment.glsl",
|
|
"scene-color-fragment.glsl"
|
|
};
|
|
|
|
GLShader *shader = new GLShader(vertexFile, QString::fromUtf8(m_shaderDir + fragmentFile[fragment]), GLShader::ExplicitLinking);
|
|
bindAttributeLocations(shader);
|
|
bindFragDataLocations(shader);
|
|
shader->link();
|
|
|
|
if (shader->isValid()) {
|
|
pushShader(shader);
|
|
resetShader(fragment);
|
|
popShader();
|
|
}
|
|
|
|
return shader;
|
|
}
|
|
|
|
GLShader *ShaderManager::loadShaderFromCode(const QByteArray &vertexSource, const QByteArray &fragmentSource)
|
|
{
|
|
GLShader *shader = new GLShader(GLShader::ExplicitLinking);
|
|
shader->load(vertexSource, fragmentSource);
|
|
bindAttributeLocations(shader);
|
|
bindFragDataLocations(shader);
|
|
shader->link();
|
|
return shader;
|
|
}
|
|
|
|
void ShaderManager::initShaders()
|
|
{
|
|
const char *vertexFile[] = {
|
|
"scene-vertex.glsl",
|
|
"scene-generic-vertex.glsl",
|
|
"scene-color-vertex.glsl",
|
|
};
|
|
|
|
const char *fragmentFile[] = {
|
|
"scene-fragment.glsl",
|
|
"scene-fragment.glsl",
|
|
"scene-color-fragment.glsl",
|
|
};
|
|
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
const qint64 coreVersionNumber = kVersionNumber(3, 0);
|
|
#else
|
|
const qint64 coreVersionNumber = kVersionNumber(1, 40);
|
|
#endif
|
|
if (GLPlatform::instance()->glslVersion() >= coreVersionNumber)
|
|
m_shaderDir = ":/resources/shaders/1.40/";
|
|
else
|
|
m_shaderDir = ":/resources/shaders/1.10/";
|
|
|
|
// Be optimistic
|
|
m_valid = true;
|
|
|
|
for (int i = 0; i < 3; i++) {
|
|
m_shader[i] = new GLShader(QString::fromUtf8(m_shaderDir + vertexFile[i]),
|
|
QString::fromUtf8(m_shaderDir + fragmentFile[i]),
|
|
GLShader::ExplicitLinking);
|
|
bindAttributeLocations(m_shader[i]);
|
|
bindFragDataLocations(m_shader[i]);
|
|
m_shader[i]->link();
|
|
|
|
if (!m_shader[i]->isValid()) {
|
|
m_valid = false;
|
|
break;
|
|
}
|
|
|
|
pushShader(m_shader[i]);
|
|
resetShader(ShaderType(i));
|
|
popShader();
|
|
}
|
|
|
|
if (!m_valid) {
|
|
for (int i = 0; i < 3; i++) {
|
|
delete m_shader[i];
|
|
m_shader[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ShaderManager::resetShader(ShaderType type)
|
|
{
|
|
// resetShader is either called from init or from push, we know that a built-in shader is bound
|
|
const QMatrix4x4 identity;
|
|
|
|
QMatrix4x4 projection;
|
|
QMatrix4x4 modelView;
|
|
|
|
GLShader *shader = getBoundShader();
|
|
|
|
switch(type) {
|
|
case SimpleShader:
|
|
projection.ortho(0, s_virtualScreenSize.width(), s_virtualScreenSize.height(), 0, 0, 65535);
|
|
break;
|
|
|
|
case GenericShader: {
|
|
// Set up the projection matrix
|
|
float fovy = 60.0f;
|
|
float aspect = 1.0f;
|
|
float zNear = 0.1f;
|
|
float zFar = 100.0f;
|
|
float ymax = zNear * tan(fovy * M_PI / 360.0f);
|
|
float ymin = -ymax;
|
|
float xmin = ymin * aspect;
|
|
float xmax = ymax * aspect;
|
|
projection.frustum(xmin, xmax, ymin, ymax, zNear, zFar);
|
|
|
|
// Set up the model-view matrix
|
|
float scaleFactor = 1.1 * tan(fovy * M_PI / 360.0f) / ymax;
|
|
modelView.translate(xmin * scaleFactor, ymax * scaleFactor, -1.1);
|
|
modelView.scale((xmax - xmin)*scaleFactor / s_virtualScreenSize.width(), -(ymax - ymin)*scaleFactor / s_virtualScreenSize.height(), 0.001);
|
|
break;
|
|
}
|
|
|
|
case ColorShader:
|
|
projection.ortho(0, s_virtualScreenSize.width(), s_virtualScreenSize.height(), 0, 0, 65535);
|
|
shader->setUniform("geometryColor", QVector4D(0, 0, 0, 1));
|
|
break;
|
|
}
|
|
|
|
shader->setUniform("sampler", 0);
|
|
|
|
shader->setUniform(GLShader::ProjectionMatrix, projection);
|
|
shader->setUniform(GLShader::ModelViewMatrix, modelView);
|
|
shader->setUniform(GLShader::ScreenTransformation, identity);
|
|
shader->setUniform(GLShader::WindowTransformation, identity);
|
|
|
|
shader->setUniform(GLShader::Offset, QVector2D(0, 0));
|
|
shader->setUniform(GLShader::ModulationConstant, QVector4D(1.0, 1.0, 1.0, 1.0));
|
|
|
|
shader->setUniform(GLShader::Saturation, 1.0f);
|
|
}
|
|
|
|
/*** GLRenderTarget ***/
|
|
bool GLRenderTarget::sSupported = false;
|
|
bool GLRenderTarget::s_blitSupported = false;
|
|
QStack<GLRenderTarget*> GLRenderTarget::s_renderTargets = QStack<GLRenderTarget*>();
|
|
QSize GLRenderTarget::s_virtualScreenSize;
|
|
|
|
void GLRenderTarget::initStatic()
|
|
{
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
sSupported = true;
|
|
s_blitSupported = hasGLVersion(3, 0);
|
|
#else
|
|
sSupported = hasGLVersion(3, 0) ||
|
|
hasGLExtension(QByteArrayLiteral("GL_ARB_framebuffer_object")) ||
|
|
hasGLExtension(QByteArrayLiteral("GL_EXT_framebuffer_object"));
|
|
|
|
s_blitSupported = hasGLVersion(3, 0) ||
|
|
hasGLExtension(QByteArrayLiteral("GL_ARB_framebuffer_object")) ||
|
|
hasGLExtension(QByteArrayLiteral("GL_EXT_framebuffer_blit"));
|
|
#endif
|
|
}
|
|
|
|
void GLRenderTarget::cleanup()
|
|
{
|
|
Q_ASSERT(s_renderTargets.isEmpty());
|
|
sSupported = false;
|
|
s_blitSupported = false;
|
|
}
|
|
|
|
bool GLRenderTarget::isRenderTargetBound()
|
|
{
|
|
return !s_renderTargets.isEmpty();
|
|
}
|
|
|
|
bool GLRenderTarget::blitSupported()
|
|
{
|
|
return s_blitSupported;
|
|
}
|
|
|
|
void GLRenderTarget::pushRenderTarget(GLRenderTarget* target)
|
|
{
|
|
target->enable();
|
|
s_renderTargets.push(target);
|
|
}
|
|
|
|
GLRenderTarget* GLRenderTarget::popRenderTarget()
|
|
{
|
|
GLRenderTarget* ret = s_renderTargets.pop();
|
|
ret->disable();
|
|
|
|
if (!s_renderTargets.isEmpty()) {
|
|
s_renderTargets.top()->enable();
|
|
} else {
|
|
glViewport (0, 0, s_virtualScreenSize.width(), s_virtualScreenSize.height());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
GLRenderTarget::GLRenderTarget(const GLTexture& color)
|
|
{
|
|
// Reset variables
|
|
mValid = false;
|
|
|
|
mTexture = color;
|
|
|
|
// Make sure FBO is supported
|
|
if (sSupported && !mTexture.isNull()) {
|
|
initFBO();
|
|
} else
|
|
qCCritical(LIBKWINGLUTILS) << "Render targets aren't supported!";
|
|
}
|
|
|
|
GLRenderTarget::~GLRenderTarget()
|
|
{
|
|
if (mValid) {
|
|
glDeleteFramebuffers(1, &mFramebuffer);
|
|
}
|
|
}
|
|
|
|
bool GLRenderTarget::enable()
|
|
{
|
|
if (!valid()) {
|
|
qCCritical(LIBKWINGLUTILS) << "Can't enable invalid render target!";
|
|
return false;
|
|
}
|
|
|
|
glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
|
|
glViewport(0, 0, mTexture.width(), mTexture.height());
|
|
mTexture.setDirty();
|
|
|
|
return true;
|
|
}
|
|
|
|
bool GLRenderTarget::disable()
|
|
{
|
|
if (!valid()) {
|
|
qCCritical(LIBKWINGLUTILS) << "Can't disable invalid render target!";
|
|
return false;
|
|
}
|
|
|
|
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
|
mTexture.setDirty();
|
|
|
|
return true;
|
|
}
|
|
|
|
static QString formatFramebufferStatus(GLenum status)
|
|
{
|
|
switch(status) {
|
|
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
|
|
// An attachment is the wrong type / is invalid / has 0 width or height
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
|
|
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
|
|
// There are no images attached to the framebuffer
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");
|
|
case GL_FRAMEBUFFER_UNSUPPORTED:
|
|
// A format or the combination of formats of the attachments is unsupported
|
|
return QStringLiteral("GL_FRAMEBUFFER_UNSUPPORTED");
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT:
|
|
// Not all attached images have the same width and height
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT");
|
|
case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT:
|
|
// The color attachments don't have the same format
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT");
|
|
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT:
|
|
// The attachments don't have the same number of samples
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE");
|
|
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT:
|
|
// The draw buffer is missing
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER");
|
|
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT:
|
|
// The read buffer is missing
|
|
return QStringLiteral("GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER");
|
|
#endif
|
|
default:
|
|
return QStringLiteral("Unknown (0x") + QString::number(status, 16) + QStringLiteral(")");
|
|
}
|
|
}
|
|
|
|
void GLRenderTarget::initFBO()
|
|
{
|
|
#if DEBUG_GLRENDERTARGET
|
|
GLenum err = glGetError();
|
|
if (err != GL_NO_ERROR)
|
|
qCCritical(LIBKWINGLUTILS) << "Error status when entering GLRenderTarget::initFBO: " << formatGLError(err);
|
|
#endif
|
|
|
|
glGenFramebuffers(1, &mFramebuffer);
|
|
|
|
#if DEBUG_GLRENDERTARGET
|
|
if ((err = glGetError()) != GL_NO_ERROR) {
|
|
qCCritical(LIBKWINGLUTILS) << "glGenFramebuffers failed: " << formatGLError(err);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
|
|
|
|
#if DEBUG_GLRENDERTARGET
|
|
if ((err = glGetError()) != GL_NO_ERROR) {
|
|
qCCritical(LIBKWINGLUTILS) << "glBindFramebuffer failed: " << formatGLError(err);
|
|
glDeleteFramebuffers(1, &mFramebuffer);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
|
|
mTexture.target(), mTexture.texture(), 0);
|
|
|
|
#if DEBUG_GLRENDERTARGET
|
|
if ((err = glGetError()) != GL_NO_ERROR) {
|
|
qCCritical(LIBKWINGLUTILS) << "glFramebufferTexture2D failed: " << formatGLError(err);
|
|
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
|
glDeleteFramebuffers(1, &mFramebuffer);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
const GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
|
|
|
|
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
|
|
|
if (status != GL_FRAMEBUFFER_COMPLETE) {
|
|
// We have an incomplete framebuffer, consider it invalid
|
|
if (status == 0)
|
|
qCCritical(LIBKWINGLUTILS) << "glCheckFramebufferStatus failed: " << formatGLError(glGetError());
|
|
else
|
|
qCCritical(LIBKWINGLUTILS) << "Invalid framebuffer status: " << formatFramebufferStatus(status);
|
|
glDeleteFramebuffers(1, &mFramebuffer);
|
|
return;
|
|
}
|
|
|
|
mValid = true;
|
|
}
|
|
|
|
void GLRenderTarget::blitFromFramebuffer(const QRect &source, const QRect &destination, GLenum filter)
|
|
{
|
|
if (!GLRenderTarget::blitSupported()) {
|
|
return;
|
|
}
|
|
GLRenderTarget::pushRenderTarget(this);
|
|
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mFramebuffer);
|
|
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
|
|
const QRect s = source.isNull() ? QRect(0, 0, s_virtualScreenSize.width(), s_virtualScreenSize.height()) : source;
|
|
const QRect d = destination.isNull() ? QRect(0, 0, mTexture.width(), mTexture.height()) : destination;
|
|
|
|
glBlitFramebuffer(s.x(), s_virtualScreenSize.height() - s.y() - s.height(), s.x() + s.width(), s_virtualScreenSize.height() - s.y(),
|
|
d.x(), mTexture.height() - d.y() - d.height(), d.x() + d.width(), mTexture.height() - d.y(),
|
|
GL_COLOR_BUFFER_BIT, filter);
|
|
GLRenderTarget::popRenderTarget();
|
|
}
|
|
|
|
void GLRenderTarget::attachTexture(const GLTexture& target)
|
|
{
|
|
if (!mValid || mTexture.texture() == target.texture()) {
|
|
return;
|
|
}
|
|
|
|
pushRenderTarget(this);
|
|
|
|
mTexture = target;
|
|
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
|
|
mTexture.target(), mTexture.texture(), 0);
|
|
|
|
popRenderTarget();
|
|
}
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
|
|
static const uint16_t indices[] = {
|
|
1, 0, 3, 3, 2, 1, 5, 4, 7, 7, 6, 5, 9, 8, 11, 11, 10, 9,
|
|
13, 12, 15, 15, 14, 13, 17, 16, 19, 19, 18, 17, 21, 20, 23, 23, 22, 21,
|
|
25, 24, 27, 27, 26, 25, 29, 28, 31, 31, 30, 29, 33, 32, 35, 35, 34, 33,
|
|
37, 36, 39, 39, 38, 37, 41, 40, 43, 43, 42, 41, 45, 44, 47, 47, 46, 45,
|
|
49, 48, 51, 51, 50, 49, 53, 52, 55, 55, 54, 53, 57, 56, 59, 59, 58, 57,
|
|
61, 60, 63, 63, 62, 61, 65, 64, 67, 67, 66, 65, 69, 68, 71, 71, 70, 69,
|
|
73, 72, 75, 75, 74, 73, 77, 76, 79, 79, 78, 77, 81, 80, 83, 83, 82, 81,
|
|
85, 84, 87, 87, 86, 85, 89, 88, 91, 91, 90, 89, 93, 92, 95, 95, 94, 93,
|
|
97, 96, 99, 99, 98, 97, 101, 100, 103, 103, 102, 101, 105, 104, 107, 107, 106, 105,
|
|
109, 108, 111, 111, 110, 109, 113, 112, 115, 115, 114, 113, 117, 116, 119, 119, 118, 117,
|
|
121, 120, 123, 123, 122, 121, 125, 124, 127, 127, 126, 125, 129, 128, 131, 131, 130, 129,
|
|
133, 132, 135, 135, 134, 133, 137, 136, 139, 139, 138, 137, 141, 140, 143, 143, 142, 141,
|
|
145, 144, 147, 147, 146, 145, 149, 148, 151, 151, 150, 149, 153, 152, 155, 155, 154, 153,
|
|
157, 156, 159, 159, 158, 157, 161, 160, 163, 163, 162, 161, 165, 164, 167, 167, 166, 165,
|
|
169, 168, 171, 171, 170, 169, 173, 172, 175, 175, 174, 173, 177, 176, 179, 179, 178, 177,
|
|
181, 180, 183, 183, 182, 181, 185, 184, 187, 187, 186, 185, 189, 188, 191, 191, 190, 189,
|
|
193, 192, 195, 195, 194, 193, 197, 196, 199, 199, 198, 197, 201, 200, 203, 203, 202, 201,
|
|
205, 204, 207, 207, 206, 205, 209, 208, 211, 211, 210, 209, 213, 212, 215, 215, 214, 213,
|
|
217, 216, 219, 219, 218, 217, 221, 220, 223, 223, 222, 221, 225, 224, 227, 227, 226, 225,
|
|
229, 228, 231, 231, 230, 229, 233, 232, 235, 235, 234, 233, 237, 236, 239, 239, 238, 237,
|
|
241, 240, 243, 243, 242, 241, 245, 244, 247, 247, 246, 245, 249, 248, 251, 251, 250, 249,
|
|
253, 252, 255, 255, 254, 253, 257, 256, 259, 259, 258, 257, 261, 260, 263, 263, 262, 261,
|
|
265, 264, 267, 267, 266, 265, 269, 268, 271, 271, 270, 269, 273, 272, 275, 275, 274, 273,
|
|
277, 276, 279, 279, 278, 277, 281, 280, 283, 283, 282, 281, 285, 284, 287, 287, 286, 285,
|
|
289, 288, 291, 291, 290, 289, 293, 292, 295, 295, 294, 293, 297, 296, 299, 299, 298, 297,
|
|
301, 300, 303, 303, 302, 301, 305, 304, 307, 307, 306, 305, 309, 308, 311, 311, 310, 309,
|
|
313, 312, 315, 315, 314, 313, 317, 316, 319, 319, 318, 317, 321, 320, 323, 323, 322, 321,
|
|
325, 324, 327, 327, 326, 325, 329, 328, 331, 331, 330, 329, 333, 332, 335, 335, 334, 333,
|
|
337, 336, 339, 339, 338, 337, 341, 340, 343, 343, 342, 341, 345, 344, 347, 347, 346, 345,
|
|
349, 348, 351, 351, 350, 349, 353, 352, 355, 355, 354, 353, 357, 356, 359, 359, 358, 357,
|
|
361, 360, 363, 363, 362, 361, 365, 364, 367, 367, 366, 365, 369, 368, 371, 371, 370, 369,
|
|
373, 372, 375, 375, 374, 373, 377, 376, 379, 379, 378, 377, 381, 380, 383, 383, 382, 381,
|
|
385, 384, 387, 387, 386, 385, 389, 388, 391, 391, 390, 389, 393, 392, 395, 395, 394, 393,
|
|
397, 396, 399, 399, 398, 397, 401, 400, 403, 403, 402, 401, 405, 404, 407, 407, 406, 405,
|
|
409, 408, 411, 411, 410, 409, 413, 412, 415, 415, 414, 413, 417, 416, 419, 419, 418, 417,
|
|
421, 420, 423, 423, 422, 421, 425, 424, 427, 427, 426, 425, 429, 428, 431, 431, 430, 429,
|
|
433, 432, 435, 435, 434, 433, 437, 436, 439, 439, 438, 437, 441, 440, 443, 443, 442, 441,
|
|
445, 444, 447, 447, 446, 445, 449, 448, 451, 451, 450, 449, 453, 452, 455, 455, 454, 453,
|
|
457, 456, 459, 459, 458, 457, 461, 460, 463, 463, 462, 461, 465, 464, 467, 467, 466, 465,
|
|
469, 468, 471, 471, 470, 469, 473, 472, 475, 475, 474, 473, 477, 476, 479, 479, 478, 477,
|
|
481, 480, 483, 483, 482, 481, 485, 484, 487, 487, 486, 485, 489, 488, 491, 491, 490, 489,
|
|
493, 492, 495, 495, 494, 493, 497, 496, 499, 499, 498, 497, 501, 500, 503, 503, 502, 501,
|
|
505, 504, 507, 507, 506, 505, 509, 508, 511, 511, 510, 509, 513, 512, 515, 515, 514, 513,
|
|
517, 516, 519, 519, 518, 517, 521, 520, 523, 523, 522, 521, 525, 524, 527, 527, 526, 525,
|
|
529, 528, 531, 531, 530, 529, 533, 532, 535, 535, 534, 533, 537, 536, 539, 539, 538, 537,
|
|
541, 540, 543, 543, 542, 541, 545, 544, 547, 547, 546, 545, 549, 548, 551, 551, 550, 549,
|
|
553, 552, 555, 555, 554, 553, 557, 556, 559, 559, 558, 557, 561, 560, 563, 563, 562, 561,
|
|
565, 564, 567, 567, 566, 565, 569, 568, 571, 571, 570, 569, 573, 572, 575, 575, 574, 573,
|
|
577, 576, 579, 579, 578, 577, 581, 580, 583, 583, 582, 581, 585, 584, 587, 587, 586, 585,
|
|
589, 588, 591, 591, 590, 589, 593, 592, 595, 595, 594, 593, 597, 596, 599, 599, 598, 597,
|
|
601, 600, 603, 603, 602, 601, 605, 604, 607, 607, 606, 605, 609, 608, 611, 611, 610, 609,
|
|
613, 612, 615, 615, 614, 613, 617, 616, 619, 619, 618, 617, 621, 620, 623, 623, 622, 621,
|
|
625, 624, 627, 627, 626, 625, 629, 628, 631, 631, 630, 629, 633, 632, 635, 635, 634, 633,
|
|
637, 636, 639, 639, 638, 637, 641, 640, 643, 643, 642, 641, 645, 644, 647, 647, 646, 645,
|
|
649, 648, 651, 651, 650, 649, 653, 652, 655, 655, 654, 653, 657, 656, 659, 659, 658, 657,
|
|
661, 660, 663, 663, 662, 661, 665, 664, 667, 667, 666, 665, 669, 668, 671, 671, 670, 669,
|
|
673, 672, 675, 675, 674, 673, 677, 676, 679, 679, 678, 677, 681, 680, 683, 683, 682, 681,
|
|
685, 684, 687, 687, 686, 685, 689, 688, 691, 691, 690, 689, 693, 692, 695, 695, 694, 693,
|
|
697, 696, 699, 699, 698, 697, 701, 700, 703, 703, 702, 701, 705, 704, 707, 707, 706, 705,
|
|
709, 708, 711, 711, 710, 709, 713, 712, 715, 715, 714, 713, 717, 716, 719, 719, 718, 717,
|
|
721, 720, 723, 723, 722, 721, 725, 724, 727, 727, 726, 725, 729, 728, 731, 731, 730, 729,
|
|
733, 732, 735, 735, 734, 733, 737, 736, 739, 739, 738, 737, 741, 740, 743, 743, 742, 741,
|
|
745, 744, 747, 747, 746, 745, 749, 748, 751, 751, 750, 749, 753, 752, 755, 755, 754, 753,
|
|
757, 756, 759, 759, 758, 757, 761, 760, 763, 763, 762, 761, 765, 764, 767, 767, 766, 765,
|
|
769, 768, 771, 771, 770, 769, 773, 772, 775, 775, 774, 773, 777, 776, 779, 779, 778, 777,
|
|
781, 780, 783, 783, 782, 781, 785, 784, 787, 787, 786, 785, 789, 788, 791, 791, 790, 789,
|
|
793, 792, 795, 795, 794, 793, 797, 796, 799, 799, 798, 797, 801, 800, 803, 803, 802, 801,
|
|
805, 804, 807, 807, 806, 805, 809, 808, 811, 811, 810, 809, 813, 812, 815, 815, 814, 813,
|
|
817, 816, 819, 819, 818, 817, 821, 820, 823, 823, 822, 821, 825, 824, 827, 827, 826, 825,
|
|
829, 828, 831, 831, 830, 829, 833, 832, 835, 835, 834, 833, 837, 836, 839, 839, 838, 837,
|
|
841, 840, 843, 843, 842, 841, 845, 844, 847, 847, 846, 845, 849, 848, 851, 851, 850, 849,
|
|
853, 852, 855, 855, 854, 853, 857, 856, 859, 859, 858, 857, 861, 860, 863, 863, 862, 861,
|
|
865, 864, 867, 867, 866, 865, 869, 868, 871, 871, 870, 869, 873, 872, 875, 875, 874, 873,
|
|
877, 876, 879, 879, 878, 877, 881, 880, 883, 883, 882, 881, 885, 884, 887, 887, 886, 885,
|
|
889, 888, 891, 891, 890, 889, 893, 892, 895, 895, 894, 893, 897, 896, 899, 899, 898, 897,
|
|
901, 900, 903, 903, 902, 901, 905, 904, 907, 907, 906, 905, 909, 908, 911, 911, 910, 909,
|
|
913, 912, 915, 915, 914, 913, 917, 916, 919, 919, 918, 917, 921, 920, 923, 923, 922, 921,
|
|
925, 924, 927, 927, 926, 925, 929, 928, 931, 931, 930, 929, 933, 932, 935, 935, 934, 933,
|
|
937, 936, 939, 939, 938, 937, 941, 940, 943, 943, 942, 941, 945, 944, 947, 947, 946, 945,
|
|
949, 948, 951, 951, 950, 949, 953, 952, 955, 955, 954, 953, 957, 956, 959, 959, 958, 957,
|
|
961, 960, 963, 963, 962, 961, 965, 964, 967, 967, 966, 965, 969, 968, 971, 971, 970, 969,
|
|
973, 972, 975, 975, 974, 973, 977, 976, 979, 979, 978, 977, 981, 980, 983, 983, 982, 981,
|
|
985, 984, 987, 987, 986, 985, 989, 988, 991, 991, 990, 989, 993, 992, 995, 995, 994, 993,
|
|
997, 996, 999, 999, 998, 997, 1001, 1000, 1003, 1003, 1002, 1001, 1005, 1004, 1007, 1007, 1006, 1005,
|
|
1009, 1008, 1011, 1011, 1010, 1009, 1013, 1012, 1015, 1015, 1014, 1013, 1017, 1016, 1019, 1019, 1018, 1017,
|
|
1021, 1020, 1023, 1023, 1022, 1021, 1025, 1024, 1027, 1027, 1026, 1025, 1029, 1028, 1031, 1031, 1030, 1029,
|
|
1033, 1032, 1035, 1035, 1034, 1033, 1037, 1036, 1039, 1039, 1038, 1037, 1041, 1040, 1043, 1043, 1042, 1041,
|
|
1045, 1044, 1047, 1047, 1046, 1045, 1049, 1048, 1051, 1051, 1050, 1049, 1053, 1052, 1055, 1055, 1054, 1053,
|
|
1057, 1056, 1059, 1059, 1058, 1057, 1061, 1060, 1063, 1063, 1062, 1061, 1065, 1064, 1067, 1067, 1066, 1065,
|
|
1069, 1068, 1071, 1071, 1070, 1069, 1073, 1072, 1075, 1075, 1074, 1073, 1077, 1076, 1079, 1079, 1078, 1077,
|
|
1081, 1080, 1083, 1083, 1082, 1081, 1085, 1084, 1087, 1087, 1086, 1085, 1089, 1088, 1091, 1091, 1090, 1089,
|
|
1093, 1092, 1095, 1095, 1094, 1093, 1097, 1096, 1099, 1099, 1098, 1097, 1101, 1100, 1103, 1103, 1102, 1101,
|
|
1105, 1104, 1107, 1107, 1106, 1105, 1109, 1108, 1111, 1111, 1110, 1109, 1113, 1112, 1115, 1115, 1114, 1113,
|
|
1117, 1116, 1119, 1119, 1118, 1117, 1121, 1120, 1123, 1123, 1122, 1121, 1125, 1124, 1127, 1127, 1126, 1125,
|
|
1129, 1128, 1131, 1131, 1130, 1129, 1133, 1132, 1135, 1135, 1134, 1133, 1137, 1136, 1139, 1139, 1138, 1137,
|
|
1141, 1140, 1143, 1143, 1142, 1141, 1145, 1144, 1147, 1147, 1146, 1145, 1149, 1148, 1151, 1151, 1150, 1149,
|
|
1153, 1152, 1155, 1155, 1154, 1153, 1157, 1156, 1159, 1159, 1158, 1157, 1161, 1160, 1163, 1163, 1162, 1161,
|
|
1165, 1164, 1167, 1167, 1166, 1165, 1169, 1168, 1171, 1171, 1170, 1169, 1173, 1172, 1175, 1175, 1174, 1173,
|
|
1177, 1176, 1179, 1179, 1178, 1177, 1181, 1180, 1183, 1183, 1182, 1181, 1185, 1184, 1187, 1187, 1186, 1185,
|
|
1189, 1188, 1191, 1191, 1190, 1189, 1193, 1192, 1195, 1195, 1194, 1193, 1197, 1196, 1199, 1199, 1198, 1197,
|
|
1201, 1200, 1203, 1203, 1202, 1201, 1205, 1204, 1207, 1207, 1206, 1205, 1209, 1208, 1211, 1211, 1210, 1209,
|
|
1213, 1212, 1215, 1215, 1214, 1213, 1217, 1216, 1219, 1219, 1218, 1217, 1221, 1220, 1223, 1223, 1222, 1221,
|
|
1225, 1224, 1227, 1227, 1226, 1225, 1229, 1228, 1231, 1231, 1230, 1229, 1233, 1232, 1235, 1235, 1234, 1233,
|
|
1237, 1236, 1239, 1239, 1238, 1237, 1241, 1240, 1243, 1243, 1242, 1241, 1245, 1244, 1247, 1247, 1246, 1245,
|
|
1249, 1248, 1251, 1251, 1250, 1249, 1253, 1252, 1255, 1255, 1254, 1253, 1257, 1256, 1259, 1259, 1258, 1257,
|
|
1261, 1260, 1263, 1263, 1262, 1261, 1265, 1264, 1267, 1267, 1266, 1265, 1269, 1268, 1271, 1271, 1270, 1269,
|
|
1273, 1272, 1275, 1275, 1274, 1273, 1277, 1276, 1279, 1279, 1278, 1277, 1281, 1280, 1283, 1283, 1282, 1281,
|
|
1285, 1284, 1287, 1287, 1286, 1285, 1289, 1288, 1291, 1291, 1290, 1289, 1293, 1292, 1295, 1295, 1294, 1293,
|
|
1297, 1296, 1299, 1299, 1298, 1297, 1301, 1300, 1303, 1303, 1302, 1301, 1305, 1304, 1307, 1307, 1306, 1305,
|
|
1309, 1308, 1311, 1311, 1310, 1309, 1313, 1312, 1315, 1315, 1314, 1313, 1317, 1316, 1319, 1319, 1318, 1317,
|
|
1321, 1320, 1323, 1323, 1322, 1321, 1325, 1324, 1327, 1327, 1326, 1325, 1329, 1328, 1331, 1331, 1330, 1329,
|
|
1333, 1332, 1335, 1335, 1334, 1333, 1337, 1336, 1339, 1339, 1338, 1337, 1341, 1340, 1343, 1343, 1342, 1341,
|
|
1345, 1344, 1347, 1347, 1346, 1345, 1349, 1348, 1351, 1351, 1350, 1349, 1353, 1352, 1355, 1355, 1354, 1353,
|
|
1357, 1356, 1359, 1359, 1358, 1357, 1361, 1360, 1363, 1363, 1362, 1361, 1365, 1364, 1367, 1367, 1366, 1365,
|
|
1369, 1368, 1371, 1371, 1370, 1369, 1373, 1372, 1375, 1375, 1374, 1373, 1377, 1376, 1379, 1379, 1378, 1377,
|
|
1381, 1380, 1383, 1383, 1382, 1381, 1385, 1384, 1387, 1387, 1386, 1385, 1389, 1388, 1391, 1391, 1390, 1389,
|
|
1393, 1392, 1395, 1395, 1394, 1393, 1397, 1396, 1399, 1399, 1398, 1397, 1401, 1400, 1403, 1403, 1402, 1401,
|
|
1405, 1404, 1407, 1407, 1406, 1405, 1409, 1408, 1411, 1411, 1410, 1409, 1413, 1412, 1415, 1415, 1414, 1413,
|
|
1417, 1416, 1419, 1419, 1418, 1417, 1421, 1420, 1423, 1423, 1422, 1421, 1425, 1424, 1427, 1427, 1426, 1425,
|
|
1429, 1428, 1431, 1431, 1430, 1429, 1433, 1432, 1435, 1435, 1434, 1433, 1437, 1436, 1439, 1439, 1438, 1437,
|
|
1441, 1440, 1443, 1443, 1442, 1441, 1445, 1444, 1447, 1447, 1446, 1445, 1449, 1448, 1451, 1451, 1450, 1449,
|
|
1453, 1452, 1455, 1455, 1454, 1453, 1457, 1456, 1459, 1459, 1458, 1457, 1461, 1460, 1463, 1463, 1462, 1461,
|
|
1465, 1464, 1467, 1467, 1466, 1465, 1469, 1468, 1471, 1471, 1470, 1469, 1473, 1472, 1475, 1475, 1474, 1473,
|
|
1477, 1476, 1479, 1479, 1478, 1477, 1481, 1480, 1483, 1483, 1482, 1481, 1485, 1484, 1487, 1487, 1486, 1485,
|
|
1489, 1488, 1491, 1491, 1490, 1489, 1493, 1492, 1495, 1495, 1494, 1493, 1497, 1496, 1499, 1499, 1498, 1497,
|
|
1501, 1500, 1503, 1503, 1502, 1501, 1505, 1504, 1507, 1507, 1506, 1505, 1509, 1508, 1511, 1511, 1510, 1509,
|
|
1513, 1512, 1515, 1515, 1514, 1513, 1517, 1516, 1519, 1519, 1518, 1517, 1521, 1520, 1523, 1523, 1522, 1521,
|
|
1525, 1524, 1527, 1527, 1526, 1525, 1529, 1528, 1531, 1531, 1530, 1529, 1533, 1532, 1535, 1535, 1534, 1533,
|
|
1537, 1536, 1539, 1539, 1538, 1537, 1541, 1540, 1543, 1543, 1542, 1541, 1545, 1544, 1547, 1547, 1546, 1545,
|
|
1549, 1548, 1551, 1551, 1550, 1549, 1553, 1552, 1555, 1555, 1554, 1553, 1557, 1556, 1559, 1559, 1558, 1557,
|
|
1561, 1560, 1563, 1563, 1562, 1561, 1565, 1564, 1567, 1567, 1566, 1565, 1569, 1568, 1571, 1571, 1570, 1569,
|
|
1573, 1572, 1575, 1575, 1574, 1573, 1577, 1576, 1579, 1579, 1578, 1577, 1581, 1580, 1583, 1583, 1582, 1581,
|
|
1585, 1584, 1587, 1587, 1586, 1585, 1589, 1588, 1591, 1591, 1590, 1589, 1593, 1592, 1595, 1595, 1594, 1593,
|
|
1597, 1596, 1599, 1599, 1598, 1597, 1601, 1600, 1603, 1603, 1602, 1601, 1605, 1604, 1607, 1607, 1606, 1605,
|
|
1609, 1608, 1611, 1611, 1610, 1609, 1613, 1612, 1615, 1615, 1614, 1613, 1617, 1616, 1619, 1619, 1618, 1617,
|
|
1621, 1620, 1623, 1623, 1622, 1621, 1625, 1624, 1627, 1627, 1626, 1625, 1629, 1628, 1631, 1631, 1630, 1629,
|
|
1633, 1632, 1635, 1635, 1634, 1633, 1637, 1636, 1639, 1639, 1638, 1637, 1641, 1640, 1643, 1643, 1642, 1641,
|
|
1645, 1644, 1647, 1647, 1646, 1645, 1649, 1648, 1651, 1651, 1650, 1649, 1653, 1652, 1655, 1655, 1654, 1653,
|
|
1657, 1656, 1659, 1659, 1658, 1657, 1661, 1660, 1663, 1663, 1662, 1661, 1665, 1664, 1667, 1667, 1666, 1665,
|
|
1669, 1668, 1671, 1671, 1670, 1669, 1673, 1672, 1675, 1675, 1674, 1673, 1677, 1676, 1679, 1679, 1678, 1677,
|
|
1681, 1680, 1683, 1683, 1682, 1681, 1685, 1684, 1687, 1687, 1686, 1685, 1689, 1688, 1691, 1691, 1690, 1689,
|
|
1693, 1692, 1695, 1695, 1694, 1693, 1697, 1696, 1699, 1699, 1698, 1697, 1701, 1700, 1703, 1703, 1702, 1701,
|
|
1705, 1704, 1707, 1707, 1706, 1705, 1709, 1708, 1711, 1711, 1710, 1709, 1713, 1712, 1715, 1715, 1714, 1713,
|
|
1717, 1716, 1719, 1719, 1718, 1717, 1721, 1720, 1723, 1723, 1722, 1721, 1725, 1724, 1727, 1727, 1726, 1725,
|
|
1729, 1728, 1731, 1731, 1730, 1729, 1733, 1732, 1735, 1735, 1734, 1733, 1737, 1736, 1739, 1739, 1738, 1737,
|
|
1741, 1740, 1743, 1743, 1742, 1741, 1745, 1744, 1747, 1747, 1746, 1745, 1749, 1748, 1751, 1751, 1750, 1749,
|
|
1753, 1752, 1755, 1755, 1754, 1753, 1757, 1756, 1759, 1759, 1758, 1757, 1761, 1760, 1763, 1763, 1762, 1761,
|
|
1765, 1764, 1767, 1767, 1766, 1765, 1769, 1768, 1771, 1771, 1770, 1769, 1773, 1772, 1775, 1775, 1774, 1773,
|
|
1777, 1776, 1779, 1779, 1778, 1777, 1781, 1780, 1783, 1783, 1782, 1781, 1785, 1784, 1787, 1787, 1786, 1785,
|
|
1789, 1788, 1791, 1791, 1790, 1789, 1793, 1792, 1795, 1795, 1794, 1793, 1797, 1796, 1799, 1799, 1798, 1797,
|
|
1801, 1800, 1803, 1803, 1802, 1801, 1805, 1804, 1807, 1807, 1806, 1805, 1809, 1808, 1811, 1811, 1810, 1809,
|
|
1813, 1812, 1815, 1815, 1814, 1813, 1817, 1816, 1819, 1819, 1818, 1817, 1821, 1820, 1823, 1823, 1822, 1821,
|
|
1825, 1824, 1827, 1827, 1826, 1825, 1829, 1828, 1831, 1831, 1830, 1829, 1833, 1832, 1835, 1835, 1834, 1833,
|
|
1837, 1836, 1839, 1839, 1838, 1837, 1841, 1840, 1843, 1843, 1842, 1841, 1845, 1844, 1847, 1847, 1846, 1845,
|
|
1849, 1848, 1851, 1851, 1850, 1849, 1853, 1852, 1855, 1855, 1854, 1853, 1857, 1856, 1859, 1859, 1858, 1857,
|
|
1861, 1860, 1863, 1863, 1862, 1861, 1865, 1864, 1867, 1867, 1866, 1865, 1869, 1868, 1871, 1871, 1870, 1869,
|
|
1873, 1872, 1875, 1875, 1874, 1873, 1877, 1876, 1879, 1879, 1878, 1877, 1881, 1880, 1883, 1883, 1882, 1881,
|
|
1885, 1884, 1887, 1887, 1886, 1885, 1889, 1888, 1891, 1891, 1890, 1889, 1893, 1892, 1895, 1895, 1894, 1893,
|
|
1897, 1896, 1899, 1899, 1898, 1897, 1901, 1900, 1903, 1903, 1902, 1901, 1905, 1904, 1907, 1907, 1906, 1905,
|
|
1909, 1908, 1911, 1911, 1910, 1909, 1913, 1912, 1915, 1915, 1914, 1913, 1917, 1916, 1919, 1919, 1918, 1917,
|
|
1921, 1920, 1923, 1923, 1922, 1921, 1925, 1924, 1927, 1927, 1926, 1925, 1929, 1928, 1931, 1931, 1930, 1929,
|
|
1933, 1932, 1935, 1935, 1934, 1933, 1937, 1936, 1939, 1939, 1938, 1937, 1941, 1940, 1943, 1943, 1942, 1941,
|
|
1945, 1944, 1947, 1947, 1946, 1945, 1949, 1948, 1951, 1951, 1950, 1949, 1953, 1952, 1955, 1955, 1954, 1953,
|
|
1957, 1956, 1959, 1959, 1958, 1957, 1961, 1960, 1963, 1963, 1962, 1961, 1965, 1964, 1967, 1967, 1966, 1965,
|
|
1969, 1968, 1971, 1971, 1970, 1969, 1973, 1972, 1975, 1975, 1974, 1973, 1977, 1976, 1979, 1979, 1978, 1977,
|
|
1981, 1980, 1983, 1983, 1982, 1981, 1985, 1984, 1987, 1987, 1986, 1985, 1989, 1988, 1991, 1991, 1990, 1989,
|
|
1993, 1992, 1995, 1995, 1994, 1993, 1997, 1996, 1999, 1999, 1998, 1997, 2001, 2000, 2003, 2003, 2002, 2001,
|
|
2005, 2004, 2007, 2007, 2006, 2005, 2009, 2008, 2011, 2011, 2010, 2009, 2013, 2012, 2015, 2015, 2014, 2013,
|
|
2017, 2016, 2019, 2019, 2018, 2017, 2021, 2020, 2023, 2023, 2022, 2021, 2025, 2024, 2027, 2027, 2026, 2025,
|
|
2029, 2028, 2031, 2031, 2030, 2029, 2033, 2032, 2035, 2035, 2034, 2033, 2037, 2036, 2039, 2039, 2038, 2037,
|
|
2041, 2040, 2043, 2043, 2042, 2041, 2045, 2044, 2047, 2047, 2046, 2045
|
|
};
|
|
|
|
#endif // KWIN_HAVE_OPENGLES
|
|
|
|
template <typename T>
|
|
T align(T value, int bytes)
|
|
{
|
|
return (value + bytes - 1) & ~T(bytes - 1);
|
|
}
|
|
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
|
|
// This class is not be used with OpenGL ES for now, since we need
|
|
// GL_ARB_draw_elements_base_vertex and GL_ARB_copy_buffer.
|
|
class IndexBuffer
|
|
{
|
|
public:
|
|
IndexBuffer();
|
|
~IndexBuffer();
|
|
|
|
void accomodate(int count);
|
|
void bind();
|
|
|
|
private:
|
|
GLuint m_buffer;
|
|
size_t m_size;
|
|
int m_count;
|
|
};
|
|
|
|
IndexBuffer::IndexBuffer()
|
|
{
|
|
// The maximum number of quads we can render with 16 bit indices is 16,384.
|
|
// But we start with 512 and grow the buffer as needed.
|
|
m_size = sizeof(indices);
|
|
m_count = m_size / (6 * sizeof(uint16_t));
|
|
|
|
glGenBuffers(1, &m_buffer);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
|
|
}
|
|
|
|
IndexBuffer::~IndexBuffer()
|
|
{
|
|
glDeleteBuffers(1, &m_buffer);
|
|
}
|
|
|
|
void IndexBuffer::accomodate(int count)
|
|
{
|
|
// Check if we need to grow the buffer.
|
|
if (count <= m_count)
|
|
return;
|
|
|
|
count = align(count, 128);
|
|
size_t size = 6 * sizeof(uint16_t) * count;
|
|
|
|
// Create a new buffer object
|
|
GLuint buffer;
|
|
glGenBuffers(1, &buffer);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, nullptr, GL_STATIC_DRAW);
|
|
|
|
// Use the GPU to copy the data from the old object to the new object,
|
|
glBindBuffer(GL_COPY_READ_BUFFER, m_buffer);
|
|
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_ELEMENT_ARRAY_BUFFER, 0, 0, m_size);
|
|
glDeleteBuffers(1, &m_buffer);
|
|
glFlush(); // Needed to work around what appears to be a CP DMA issue in r600g
|
|
|
|
// Map the new object and fill in the uninitialized section
|
|
const GLbitfield access = GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_INVALIDATE_RANGE_BIT;
|
|
uint16_t *map = (uint16_t *) glMapBufferRange(GL_ELEMENT_ARRAY_BUFFER, m_size, size - m_size, access);
|
|
|
|
const uint16_t index[] = { 1, 0, 3, 3, 2, 1 };
|
|
for (int i = m_count; i < count; i++) {
|
|
for (int j = 0; j < 6; j++)
|
|
*(map++) = i * 4 + index[j];
|
|
}
|
|
|
|
glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
|
|
m_buffer = buffer;
|
|
m_count = count;
|
|
m_size = size;
|
|
}
|
|
|
|
void IndexBuffer::bind()
|
|
{
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_buffer);
|
|
}
|
|
|
|
#endif // KWIN_HAVE_OPENGLES
|
|
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
class BitRef
|
|
{
|
|
public:
|
|
BitRef(uint32_t &bitfield, int bit) : m_bitfield(bitfield), m_mask(1 << bit) {}
|
|
|
|
void operator = (bool val) {
|
|
if (val)
|
|
m_bitfield |= m_mask;
|
|
else
|
|
m_bitfield &= ~m_mask;
|
|
}
|
|
|
|
operator bool () const { return m_bitfield & m_mask; }
|
|
|
|
private:
|
|
uint32_t &m_bitfield;
|
|
int const m_mask;
|
|
};
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
class Bitfield
|
|
{
|
|
public:
|
|
Bitfield() : m_bitfield(0) {}
|
|
Bitfield(uint32_t bits) : m_bitfield(bits) {}
|
|
|
|
void set(int i) { m_bitfield |= (1 << i); }
|
|
void clear(int i) { m_bitfield &= ~(1 << i); }
|
|
|
|
BitRef operator [] (int i) { return BitRef(m_bitfield, i); }
|
|
operator uint32_t () const { return m_bitfield; }
|
|
|
|
private:
|
|
uint32_t m_bitfield;
|
|
};
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
class BitfieldIterator
|
|
{
|
|
public:
|
|
BitfieldIterator(uint32_t bitfield) : m_bitfield(bitfield) {}
|
|
|
|
bool hasNext() const { return m_bitfield != 0; }
|
|
|
|
int next() {
|
|
const int bit = ffs(m_bitfield) - 1;
|
|
m_bitfield ^= (1 << bit);
|
|
return bit;
|
|
}
|
|
|
|
private:
|
|
uint32_t m_bitfield;
|
|
};
|
|
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
|
|
struct VertexAttrib
|
|
{
|
|
int size;
|
|
GLenum type;
|
|
int offset;
|
|
};
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
|
|
struct BufferFence
|
|
{
|
|
GLsync sync;
|
|
intptr_t nextEnd;
|
|
|
|
bool signaled() const
|
|
{
|
|
GLint value;
|
|
glGetSynciv(sync, GL_SYNC_STATUS, 1, nullptr, &value);
|
|
return value == GL_SIGNALED;
|
|
}
|
|
};
|
|
|
|
|
|
static void deleteAll(std::deque<BufferFence> &fences)
|
|
{
|
|
for (const BufferFence &fence : fences)
|
|
glDeleteSync(fence.sync);
|
|
|
|
fences.clear();
|
|
}
|
|
|
|
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
|
|
|
|
template <size_t Count>
|
|
struct FrameSizesArray
|
|
{
|
|
public:
|
|
FrameSizesArray() {
|
|
m_array.fill(0);
|
|
}
|
|
|
|
void push(size_t size) {
|
|
m_array[m_index] = size;
|
|
m_index = (m_index + 1) % Count;
|
|
}
|
|
|
|
size_t average() const {
|
|
size_t sum = 0;
|
|
for (size_t size : m_array)
|
|
sum += size;
|
|
return sum / Count;
|
|
}
|
|
|
|
private:
|
|
std::array<size_t, Count> m_array;
|
|
int m_index = 0;
|
|
};
|
|
|
|
|
|
|
|
//*********************************
|
|
// GLVertexBufferPrivate
|
|
//*********************************
|
|
class GLVertexBufferPrivate
|
|
{
|
|
public:
|
|
GLVertexBufferPrivate(GLVertexBuffer::UsageHint usageHint)
|
|
: vertexCount(0)
|
|
, persistent(false)
|
|
, useColor(false)
|
|
, color(0, 0, 0, 255)
|
|
, bufferSize(0)
|
|
, bufferEnd(0)
|
|
, mappedSize(0)
|
|
, frameSize(0)
|
|
, nextOffset(0)
|
|
, baseAddress(0)
|
|
, map(nullptr)
|
|
{
|
|
glGenBuffers(1, &buffer);
|
|
|
|
switch(usageHint) {
|
|
case GLVertexBuffer::Dynamic:
|
|
usage = GL_DYNAMIC_DRAW;
|
|
break;
|
|
case GLVertexBuffer::Static:
|
|
usage = GL_STATIC_DRAW;
|
|
break;
|
|
default:
|
|
usage = GL_STREAM_DRAW;
|
|
break;
|
|
}
|
|
}
|
|
|
|
~GLVertexBufferPrivate() {
|
|
deleteAll(fences);
|
|
|
|
if (buffer != 0) {
|
|
glDeleteBuffers(1, &buffer);
|
|
map = nullptr;
|
|
}
|
|
}
|
|
|
|
void interleaveArrays(float *array, int dim, const float *vertices, const float *texcoords, int count);
|
|
void bindArrays();
|
|
void unbindArrays();
|
|
void reallocateBuffer(size_t size);
|
|
GLvoid *mapNextFreeRange(size_t size);
|
|
void reallocatePersistentBuffer(size_t size);
|
|
bool awaitFence(intptr_t offset);
|
|
GLvoid *getIdleRange(size_t size);
|
|
|
|
GLuint buffer;
|
|
GLenum usage;
|
|
int stride;
|
|
int vertexCount;
|
|
static GLVertexBuffer *streamingBuffer;
|
|
static bool haveBufferStorage;
|
|
static bool haveSyncFences;
|
|
static bool hasMapBufferRange;
|
|
static bool supportsIndexedQuads;
|
|
QByteArray dataStore;
|
|
bool persistent;
|
|
bool useColor;
|
|
QVector4D color;
|
|
size_t bufferSize;
|
|
intptr_t bufferEnd;
|
|
size_t mappedSize;
|
|
size_t frameSize;
|
|
intptr_t nextOffset;
|
|
intptr_t baseAddress;
|
|
uint8_t *map;
|
|
std::deque<BufferFence> fences;
|
|
FrameSizesArray<4> frameSizes;
|
|
VertexAttrib attrib[VertexAttributeCount];
|
|
Bitfield enabledArrays;
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
static IndexBuffer *s_indexBuffer;
|
|
#endif
|
|
};
|
|
|
|
bool GLVertexBufferPrivate::hasMapBufferRange = false;
|
|
bool GLVertexBufferPrivate::supportsIndexedQuads = false;
|
|
GLVertexBuffer *GLVertexBufferPrivate::streamingBuffer = nullptr;
|
|
bool GLVertexBufferPrivate::haveBufferStorage = false;
|
|
bool GLVertexBufferPrivate::haveSyncFences = false;
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
IndexBuffer *GLVertexBufferPrivate::s_indexBuffer = nullptr;
|
|
#endif
|
|
|
|
void GLVertexBufferPrivate::interleaveArrays(float *dst, int dim,
|
|
const float *vertices, const float *texcoords,
|
|
int count)
|
|
{
|
|
if (!texcoords) {
|
|
memcpy((void *) dst, vertices, dim * sizeof(float) * count);
|
|
return;
|
|
}
|
|
|
|
switch (dim)
|
|
{
|
|
case 2:
|
|
for (int i = 0; i < count; i++) {
|
|
*(dst++) = *(vertices++);
|
|
*(dst++) = *(vertices++);
|
|
*(dst++) = *(texcoords++);
|
|
*(dst++) = *(texcoords++);
|
|
}
|
|
break;
|
|
|
|
case 3:
|
|
for (int i = 0; i < count; i++) {
|
|
*(dst++) = *(vertices++);
|
|
*(dst++) = *(vertices++);
|
|
*(dst++) = *(vertices++);
|
|
*(dst++) = *(texcoords++);
|
|
*(dst++) = *(texcoords++);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
for (int i = 0; i < count; i++) {
|
|
for (int j = 0; j < dim; j++)
|
|
*(dst++) = *(vertices++);
|
|
|
|
*(dst++) = *(texcoords++);
|
|
*(dst++) = *(texcoords++);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GLVertexBufferPrivate::bindArrays()
|
|
{
|
|
if (useColor) {
|
|
GLShader *shader = ShaderManager::instance()->getBoundShader();
|
|
shader->setUniform(GLShader::Color, color);
|
|
}
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, buffer);
|
|
|
|
BitfieldIterator it(enabledArrays);
|
|
while (it.hasNext()) {
|
|
const int index = it.next();
|
|
glVertexAttribPointer(index, attrib[index].size, attrib[index].type, GL_FALSE, stride,
|
|
(const GLvoid *) (baseAddress + attrib[index].offset));
|
|
glEnableVertexAttribArray(index);
|
|
}
|
|
}
|
|
|
|
void GLVertexBufferPrivate::unbindArrays()
|
|
{
|
|
BitfieldIterator it(enabledArrays);
|
|
while (it.hasNext())
|
|
glDisableVertexAttribArray(it.next());
|
|
}
|
|
|
|
void GLVertexBufferPrivate::reallocatePersistentBuffer(size_t size)
|
|
{
|
|
if (buffer != 0) {
|
|
// This also unmaps and unbinds the buffer
|
|
glDeleteBuffers(1, &buffer);
|
|
buffer = 0;
|
|
|
|
deleteAll(fences);
|
|
}
|
|
|
|
if (buffer == 0)
|
|
glGenBuffers(1, &buffer);
|
|
|
|
// Round the size up to 64 kb
|
|
size_t minSize = qMax<size_t>(frameSizes.average() * 3, 128 * 1024);
|
|
bufferSize = align(qMax(size, minSize), 64 * 1024);
|
|
|
|
const GLbitfield storage = GL_DYNAMIC_STORAGE_BIT;
|
|
const GLbitfield access = GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT;
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, buffer);
|
|
glBufferStorage(GL_ARRAY_BUFFER, bufferSize, nullptr, storage | access);
|
|
|
|
map = (uint8_t *) glMapBufferRange(GL_ARRAY_BUFFER, 0, bufferSize, access);
|
|
|
|
nextOffset = 0;
|
|
bufferEnd = bufferSize;
|
|
}
|
|
|
|
bool GLVertexBufferPrivate::awaitFence(intptr_t end)
|
|
{
|
|
// Skip fences until we reach the end offset
|
|
while (!fences.empty() && fences.front().nextEnd < end) {
|
|
glDeleteSync(fences.front().sync);
|
|
fences.pop_front();
|
|
}
|
|
|
|
assert(!fences.empty());
|
|
|
|
// Wait on the next fence
|
|
const BufferFence &fence = fences.front();
|
|
|
|
if (!fence.signaled()) {
|
|
qCDebug(LIBKWINGLUTILS) << "Stalling on VBO fence";
|
|
const GLenum ret = glClientWaitSync(fence.sync, GL_SYNC_FLUSH_COMMANDS_BIT, 1000000000);
|
|
|
|
if (ret == GL_TIMEOUT_EXPIRED || ret == GL_WAIT_FAILED) {
|
|
qCCritical(LIBKWINGLUTILS) << "Wait failed";
|
|
return false;
|
|
}
|
|
}
|
|
|
|
glDeleteSync(fence.sync);
|
|
|
|
// Update the end pointer
|
|
bufferEnd = fence.nextEnd;
|
|
fences.pop_front();
|
|
|
|
return true;
|
|
}
|
|
|
|
GLvoid *GLVertexBufferPrivate::getIdleRange(size_t size)
|
|
{
|
|
if (unlikely(size > bufferSize))
|
|
reallocatePersistentBuffer(size * 2);
|
|
|
|
// Handle wrap-around
|
|
if (unlikely(nextOffset + size > bufferSize)) {
|
|
nextOffset = 0;
|
|
bufferEnd -= bufferSize;
|
|
|
|
for (BufferFence &fence : fences)
|
|
fence.nextEnd -= bufferSize;
|
|
|
|
// Emit a fence now
|
|
BufferFence fence;
|
|
fence.sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
|
|
fence.nextEnd = bufferSize;
|
|
fences.emplace_back(fence);
|
|
}
|
|
|
|
if (unlikely(nextOffset + intptr_t(size) > bufferEnd)) {
|
|
if (!awaitFence(nextOffset + size))
|
|
return nullptr;
|
|
}
|
|
|
|
return map + nextOffset;
|
|
}
|
|
|
|
void GLVertexBufferPrivate::reallocateBuffer(size_t size)
|
|
{
|
|
// Round the size up to 4 Kb for streaming/dynamic buffers.
|
|
const size_t minSize = 32768; // Minimum size for streaming buffers
|
|
const size_t alloc = usage != GL_STATIC_DRAW ? align(qMax(size, minSize), 4096) : size;
|
|
|
|
glBufferData(GL_ARRAY_BUFFER, alloc, 0, usage);
|
|
|
|
bufferSize = alloc;
|
|
}
|
|
|
|
GLvoid *GLVertexBufferPrivate::mapNextFreeRange(size_t size)
|
|
{
|
|
GLbitfield access = GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT | GL_MAP_UNSYNCHRONIZED_BIT;
|
|
|
|
if ((nextOffset + size) > bufferSize) {
|
|
// Reallocate the data store if it's too small.
|
|
if (size > bufferSize) {
|
|
reallocateBuffer(size);
|
|
} else {
|
|
access |= GL_MAP_INVALIDATE_BUFFER_BIT;
|
|
access ^= GL_MAP_UNSYNCHRONIZED_BIT;
|
|
}
|
|
|
|
nextOffset = 0;
|
|
}
|
|
|
|
return glMapBufferRange(GL_ARRAY_BUFFER, nextOffset, size, access);
|
|
}
|
|
|
|
|
|
//*********************************
|
|
// GLVertexBuffer
|
|
//*********************************
|
|
QSize GLVertexBuffer::s_virtualScreenSize;
|
|
|
|
GLVertexBuffer::GLVertexBuffer(UsageHint hint)
|
|
: d(new GLVertexBufferPrivate(hint))
|
|
{
|
|
}
|
|
|
|
GLVertexBuffer::~GLVertexBuffer()
|
|
{
|
|
delete d;
|
|
}
|
|
|
|
void GLVertexBuffer::setData(const void *data, size_t size)
|
|
{
|
|
GLvoid *ptr = map(size);
|
|
memcpy(ptr, data, size);
|
|
unmap();
|
|
}
|
|
|
|
void GLVertexBuffer::setData(int vertexCount, int dim, const float* vertices, const float* texcoords)
|
|
{
|
|
const GLVertexAttrib layout[] = {
|
|
{ VA_Position, dim, GL_FLOAT, 0 },
|
|
{ VA_TexCoord, 2, GL_FLOAT, int(dim * sizeof(float)) }
|
|
};
|
|
|
|
int stride = (texcoords ? dim + 2 : dim) * sizeof(float);
|
|
int attribCount = texcoords ? 2 : 1;
|
|
|
|
setAttribLayout(layout, attribCount, stride);
|
|
setVertexCount(vertexCount);
|
|
|
|
GLvoid *ptr = map(vertexCount * stride);
|
|
d->interleaveArrays((float *) ptr, dim, vertices, texcoords, vertexCount);
|
|
unmap();
|
|
}
|
|
|
|
GLvoid *GLVertexBuffer::map(size_t size)
|
|
{
|
|
d->mappedSize = size;
|
|
d->frameSize += size;
|
|
|
|
if (d->persistent)
|
|
return d->getIdleRange(size);
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, d->buffer);
|
|
|
|
bool preferBufferSubData = GLPlatform::instance()->preferBufferSubData();
|
|
|
|
if (GLVertexBufferPrivate::hasMapBufferRange && !preferBufferSubData)
|
|
return (GLvoid *) d->mapNextFreeRange(size);
|
|
|
|
// If we can't map the buffer we allocate local memory to hold the
|
|
// buffer data and return a pointer to it. The data will be submitted
|
|
// to the actual buffer object when the user calls unmap().
|
|
if (size_t(d->dataStore.size()) < size)
|
|
d->dataStore.resize(size);
|
|
|
|
return (GLvoid *) d->dataStore.data();
|
|
}
|
|
|
|
void GLVertexBuffer::unmap()
|
|
{
|
|
if (d->persistent) {
|
|
d->baseAddress = d->nextOffset;
|
|
d->nextOffset += align(d->mappedSize, 16); // Align to 16 bytes for SSE
|
|
d->mappedSize = 0;
|
|
return;
|
|
}
|
|
|
|
bool preferBufferSubData = GLPlatform::instance()->preferBufferSubData();
|
|
|
|
if (GLVertexBufferPrivate::hasMapBufferRange && !preferBufferSubData) {
|
|
glUnmapBuffer(GL_ARRAY_BUFFER);
|
|
|
|
d->baseAddress = d->nextOffset;
|
|
d->nextOffset += align(d->mappedSize, 16); // Align to 16 bytes for SSE
|
|
} else {
|
|
// Upload the data from local memory to the buffer object
|
|
if (preferBufferSubData) {
|
|
if ((d->nextOffset + d->mappedSize) > d->bufferSize) {
|
|
d->reallocateBuffer(d->mappedSize);
|
|
d->nextOffset = 0;
|
|
}
|
|
|
|
glBufferSubData(GL_ARRAY_BUFFER, d->nextOffset, d->mappedSize, d->dataStore.constData());
|
|
|
|
d->baseAddress = d->nextOffset;
|
|
d->nextOffset += align(d->mappedSize, 16); // Align to 16 bytes for SSE
|
|
} else {
|
|
glBufferData(GL_ARRAY_BUFFER, d->mappedSize, d->dataStore.data(), d->usage);
|
|
d->baseAddress = 0;
|
|
}
|
|
|
|
// Free the local memory buffer if it's unlikely to be used again
|
|
if (d->usage == GL_STATIC_DRAW)
|
|
d->dataStore = QByteArray();
|
|
|
|
}
|
|
|
|
d->mappedSize = 0;
|
|
}
|
|
|
|
void GLVertexBuffer::setVertexCount(int count)
|
|
{
|
|
d->vertexCount = count;
|
|
}
|
|
|
|
void GLVertexBuffer::setAttribLayout(const GLVertexAttrib *attribs, int count, int stride)
|
|
{
|
|
// Start by disabling all arrays
|
|
d->enabledArrays = 0;
|
|
|
|
for (int i = 0; i < count; i++) {
|
|
const int index = attribs[i].index;
|
|
|
|
assert(index >= 0 && index < VertexAttributeCount);
|
|
assert(!d->enabledArrays[index]);
|
|
|
|
d->attrib[index].size = attribs[i].size;
|
|
d->attrib[index].type = attribs[i].type;
|
|
d->attrib[index].offset = attribs[i].relativeOffset;
|
|
|
|
d->enabledArrays[index] = true;
|
|
}
|
|
|
|
d->stride = stride;
|
|
}
|
|
|
|
void GLVertexBuffer::render(GLenum primitiveMode)
|
|
{
|
|
render(infiniteRegion(), primitiveMode, false);
|
|
}
|
|
|
|
void GLVertexBuffer::render(const QRegion& region, GLenum primitiveMode, bool hardwareClipping)
|
|
{
|
|
d->bindArrays();
|
|
draw(region, primitiveMode, 0, d->vertexCount, hardwareClipping);
|
|
d->unbindArrays();
|
|
}
|
|
|
|
void GLVertexBuffer::bindArrays()
|
|
{
|
|
d->bindArrays();
|
|
}
|
|
|
|
void GLVertexBuffer::unbindArrays()
|
|
{
|
|
d->unbindArrays();
|
|
}
|
|
|
|
void GLVertexBuffer::draw(GLenum primitiveMode, int first, int count)
|
|
{
|
|
draw(infiniteRegion(), primitiveMode, first, count, false);
|
|
}
|
|
|
|
void GLVertexBuffer::draw(const QRegion ®ion, GLenum primitiveMode, int first, int count, bool hardwareClipping)
|
|
{
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
if (primitiveMode == GL_QUADS) {
|
|
IndexBuffer *&indexBuffer = GLVertexBufferPrivate::s_indexBuffer;
|
|
|
|
if (!indexBuffer)
|
|
indexBuffer = new IndexBuffer;
|
|
|
|
indexBuffer->bind();
|
|
indexBuffer->accomodate(count / 4);
|
|
|
|
count = count * 6 / 4;
|
|
|
|
if (!hardwareClipping) {
|
|
glDrawElementsBaseVertex(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, nullptr, first);
|
|
} else {
|
|
// Clip using scissoring
|
|
foreach (const QRect &r, region.rects()) {
|
|
glScissor(r.x(), s_virtualScreenSize.height() - r.y() - r.height(), r.width(), r.height());
|
|
glDrawElementsBaseVertex(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, nullptr, first);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (!hardwareClipping) {
|
|
glDrawArrays(primitiveMode, first, count);
|
|
} else {
|
|
// Clip using scissoring
|
|
foreach (const QRect &r, region.rects()) {
|
|
glScissor(r.x(), s_virtualScreenSize.height() - r.y() - r.height(), r.width(), r.height());
|
|
glDrawArrays(primitiveMode, first, count);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool GLVertexBuffer::supportsIndexedQuads()
|
|
{
|
|
return GLVertexBufferPrivate::supportsIndexedQuads;
|
|
}
|
|
|
|
bool GLVertexBuffer::isUseColor() const
|
|
{
|
|
return d->useColor;
|
|
}
|
|
|
|
void GLVertexBuffer::setUseColor(bool enable)
|
|
{
|
|
d->useColor = enable;
|
|
}
|
|
|
|
void GLVertexBuffer::setColor(const QColor& color, bool enable)
|
|
{
|
|
d->useColor = enable;
|
|
d->color = QVector4D(color.redF(), color.greenF(), color.blueF(), color.alphaF());
|
|
}
|
|
|
|
void GLVertexBuffer::reset()
|
|
{
|
|
d->useColor = false;
|
|
d->color = QVector4D(0, 0, 0, 1);
|
|
d->vertexCount = 0;
|
|
}
|
|
|
|
void GLVertexBuffer::endOfFrame()
|
|
{
|
|
if (!d->persistent)
|
|
return;
|
|
|
|
// Emit a fence if we have uploaded data
|
|
if (d->frameSize > 0) {
|
|
d->frameSizes.push(d->frameSize);
|
|
d->frameSize = 0;
|
|
|
|
// Force the buffer to be reallocated at the beginning of the next frame
|
|
// if the average frame size is greater than half the size of the buffer
|
|
if (unlikely(d->frameSizes.average() > d->bufferSize / 2)) {
|
|
deleteAll(d->fences);
|
|
glDeleteBuffers(1, &d->buffer);
|
|
|
|
d->buffer = 0;
|
|
d->bufferSize = 0;
|
|
d->nextOffset = 0;
|
|
d->map = nullptr;
|
|
} else {
|
|
BufferFence fence;
|
|
fence.sync = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
|
|
fence.nextEnd = d->nextOffset + d->bufferSize;
|
|
|
|
d->fences.emplace_back(fence);
|
|
}
|
|
}
|
|
}
|
|
|
|
void GLVertexBuffer::framePosted()
|
|
{
|
|
if (!d->persistent)
|
|
return;
|
|
|
|
// Remove finished fences from the list and update the bufferEnd offset
|
|
while (d->fences.size() > 1 && d->fences.front().signaled()) {
|
|
const BufferFence &fence = d->fences.front();
|
|
glDeleteSync(fence.sync);
|
|
|
|
d->bufferEnd = fence.nextEnd;
|
|
d->fences.pop_front();
|
|
}
|
|
}
|
|
|
|
void GLVertexBuffer::initStatic()
|
|
{
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
GLVertexBufferPrivate::hasMapBufferRange = hasGLExtension(QByteArrayLiteral("GL_EXT_map_buffer_range"));
|
|
GLVertexBufferPrivate::supportsIndexedQuads = false;
|
|
GLVertexBufferPrivate::haveBufferStorage = false;
|
|
GLVertexBufferPrivate::haveSyncFences = false;
|
|
#else
|
|
bool haveBaseVertex = hasGLVersion(3, 2) || hasGLExtension(QByteArrayLiteral("GL_ARB_draw_elements_base_vertex"));
|
|
bool haveCopyBuffer = hasGLVersion(3, 1) || hasGLExtension(QByteArrayLiteral("GL_ARB_copy_buffer"));
|
|
bool haveMapBufferRange = hasGLVersion(3, 0) || hasGLExtension(QByteArrayLiteral("GL_ARB_map_buffer_range"));
|
|
|
|
GLVertexBufferPrivate::hasMapBufferRange = haveMapBufferRange;
|
|
GLVertexBufferPrivate::supportsIndexedQuads = haveBaseVertex && haveCopyBuffer && haveMapBufferRange;
|
|
GLVertexBufferPrivate::s_indexBuffer = nullptr;
|
|
GLVertexBufferPrivate::haveBufferStorage = hasGLVersion(4, 4) || hasGLExtension("GL_ARB_buffer_storage");
|
|
GLVertexBufferPrivate::haveSyncFences = hasGLVersion(3, 2) || hasGLExtension("GL_ARB_sync");
|
|
#endif
|
|
GLVertexBufferPrivate::streamingBuffer = new GLVertexBuffer(GLVertexBuffer::Stream);
|
|
|
|
if (GLVertexBufferPrivate::haveBufferStorage && GLVertexBufferPrivate::haveSyncFences) {
|
|
if (qgetenv("KWIN_PERSISTENT_VBO") != QByteArrayLiteral("0")) {
|
|
GLVertexBufferPrivate::streamingBuffer->d->persistent = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void GLVertexBuffer::cleanup()
|
|
{
|
|
#ifndef KWIN_HAVE_OPENGLES
|
|
delete GLVertexBufferPrivate::s_indexBuffer;
|
|
GLVertexBufferPrivate::s_indexBuffer = nullptr;
|
|
#endif
|
|
GLVertexBufferPrivate::hasMapBufferRange = false;
|
|
GLVertexBufferPrivate::supportsIndexedQuads = false;
|
|
delete GLVertexBufferPrivate::streamingBuffer;
|
|
GLVertexBufferPrivate::streamingBuffer = nullptr;
|
|
}
|
|
|
|
GLVertexBuffer *GLVertexBuffer::streamingBuffer()
|
|
{
|
|
return GLVertexBufferPrivate::streamingBuffer;
|
|
}
|
|
|
|
} // namespace
|