/
mythrender_opengl.cpp
1678 lines (1465 loc) · 55.3 KB
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mythrender_opengl.cpp
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// Std
#include <algorithm>
using std::min;
// Qt
#include <QLibrary>
#include <QPainter>
#include <QWindow>
#include <QWidget>
#include <QGuiApplication>
// MythTV
#include "mythcorecontext.h"
#include "mythrender_opengl.h"
#include "mythrender_opengl_shaders.h"
#include "mythlogging.h"
#include "mythuitype.h"
#include "mythxdisplay.h"
#define LOC QString("OpenGL: ")
#ifdef Q_OS_ANDROID
#include <android/log.h>
#include <QWindow>
#endif
#define VERTEX_INDEX 0
#define COLOR_INDEX 1
#define TEXTURE_INDEX 2
#define VERTEX_SIZE 2
#define TEXTURE_SIZE 2
static const GLuint kVertexOffset = 0;
static const GLuint kTextureOffset = 8 * sizeof(GLfloat);
static const GLuint kVertexSize = 16 * sizeof(GLfloat);
static inline int __glCheck__(const QString &loc, const char* fileName, int n)
{
GLenum error;
while((error = glGetError()) != GL_NO_ERROR)
LOG(VB_GENERAL, LOG_ERR, QString("%1: %2 @ %3, %4").arg(loc).arg(error).arg(fileName).arg(n));
return error;
}
#define MAX_VERTEX_CACHE 500
#define glCheck() __glCheck__(LOC, __FILE__, __LINE__)
MythGLTexture::MythGLTexture(QOpenGLTexture *Texture)
: m_data(nullptr),
m_bufferSize(0),
m_textureId(0),
m_texture(Texture),
m_pixelFormat(QOpenGLTexture::RGBA),
m_pixelType(QOpenGLTexture::UInt8),
m_vbo(nullptr),
m_size(0,0),
m_totalSize(0,0),
m_flip(true),
m_crop(false),
m_source(),
m_destination()
{
memset(&m_vertexData, 0, sizeof(m_vertexData));
}
MythGLTexture::MythGLTexture(GLuint Texture)
: m_data(nullptr),
m_bufferSize(0),
m_textureId(Texture),
m_texture(nullptr),
m_pixelFormat(QOpenGLTexture::RGBA),
m_pixelType(QOpenGLTexture::UInt8),
m_vbo(nullptr),
m_size(0,0),
m_totalSize(0,0),
m_flip(true),
m_crop(false),
m_source(),
m_destination()
{
memset(&m_vertexData, 0, sizeof(m_vertexData));
}
OpenGLLocker::OpenGLLocker(MythRenderOpenGL *render) : m_render(render)
{
if (m_render)
m_render->makeCurrent();
}
OpenGLLocker::~OpenGLLocker()
{
if (m_render)
m_render->doneCurrent();
}
MythRenderOpenGL* MythRenderOpenGL::Create(const QString&, QPaintDevice* device)
{
QString display = getenv("DISPLAY");
// Determine if we are running a remote X11 session
// DISPLAY=:x or DISPLAY=unix:x are local
// DISPLAY=hostname:x is remote
// DISPLAY=/xxx/xxx/.../org.macosforge.xquartz:x is local OS X
// x can be numbers n or n.n
// Anything else including DISPLAY not set is assumed local,
// in that case we are probably not running under X11
if (!display.isEmpty()
&& !display.startsWith(":")
&& !display.startsWith("unix:")
&& !display.startsWith("/")
&& display.contains(':'))
{
LOG(VB_GENERAL, LOG_WARNING, LOC + "OpenGL is disabled for Remote X Session");
return nullptr;
}
QSurfaceFormat format;
format.setDepthBufferSize(0);
format.setStencilBufferSize(0);
format.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
format.setProfile(QSurfaceFormat::CoreProfile);
format.setSwapInterval(1);
#ifdef USING_OPENGLES
format.setRenderableType(QSurfaceFormat::OpenGLES);
#endif
if (qApp->platformName().contains("egl"))
format.setRenderableType(QSurfaceFormat::OpenGLES);
if (VERBOSE_LEVEL_CHECK(VB_GPU, LOG_INFO))
format.setOption(QSurfaceFormat::DebugContext);
return new MythRenderOpenGL(format, device);
}
MythRenderOpenGL::MythRenderOpenGL(const QSurfaceFormat& format, QPaintDevice* device,
RenderType type)
: QOpenGLContext(),
QOpenGLFunctions(),
MythRender(type),
m_lock(QMutex::Recursive),
m_openglDebugger(nullptr)
{
QWidget *w = dynamic_cast<QWidget*>(device);
m_window = (w) ? w->windowHandle() : nullptr;
ResetVars();
ResetProcs();
setFormat(format);
}
MythRenderOpenGL::~MythRenderOpenGL()
{
if (!isValid())
return;
makeCurrent();
DeleteOpenGLResources();
if (m_openglDebugger)
delete m_openglDebugger;
doneCurrent();
}
void MythRenderOpenGL::messageLogged(const QOpenGLDebugMessage &Message)
{
// filter out our own messages
if (Message.source() == QOpenGLDebugMessage::ApplicationSource)
return;
QString message = Message.message();
QString type("Unknown");
switch (Message.type())
{
case QOpenGLDebugMessage::ErrorType:
type = "Error"; break;
case QOpenGLDebugMessage::DeprecatedBehaviorType:
type = "Deprecated"; break;
case QOpenGLDebugMessage::UndefinedBehaviorType:
type = "Undef behaviour"; break;
case QOpenGLDebugMessage::PortabilityType:
type = "Portability"; break;
case QOpenGLDebugMessage::PerformanceType:
type = "Performance"; break;
case QOpenGLDebugMessage::OtherType:
type = "Other"; break;
case QOpenGLDebugMessage::MarkerType:
type = "Marker"; break;
case QOpenGLDebugMessage::GroupPushType:
type = "GroupPush"; break;
case QOpenGLDebugMessage::GroupPopType:
type = "GroupPop"; break;
default: break;
}
LOG(VB_GPU, LOG_INFO, QString("%1 %2: %3").arg(LOC).arg(type).arg(message));
}
void MythRenderOpenGL::logDebugMarker(const QString &Message)
{
if (m_openglDebugger)
{
QOpenGLDebugMessage message = QOpenGLDebugMessage::createApplicationMessage(
Message, 0, QOpenGLDebugMessage::NotificationSeverity, QOpenGLDebugMessage::MarkerType);
m_openglDebugger->logMessage(message);
}
}
bool MythRenderOpenGL::Init(void)
{
if (!isValid())
{
LOG(VB_GENERAL, LOG_ERR, LOC + "MythRenderOpenGL is not a valid OpenGL rendering context");
return false;
}
OpenGLLocker locker(this);
initializeOpenGLFunctions();
m_features = openGLFeatures();
// don't enable this by default - it can generate a lot of detail
if (VERBOSE_LEVEL_CHECK(VB_GPU, LOG_INFO))
{
m_openglDebugger = new QOpenGLDebugLogger();
if (m_openglDebugger->initialize())
{
connect(m_openglDebugger, SIGNAL(messageLogged(QOpenGLDebugMessage)), this, SLOT(messageLogged(QOpenGLDebugMessage)));
QOpenGLDebugLogger::LoggingMode mode = QOpenGLDebugLogger::AsynchronousLogging;
#if 0
// this will impact performance but can be very useful
mode = QOpenGLDebugLogger::SynchronousLogging;
#endif
m_openglDebugger->startLogging(mode);
LOG(VB_GENERAL, LOG_INFO, LOC + "GPU debug logging started");
}
else
{
LOG(VB_GENERAL, LOG_WARNING, LOC + "Failed to initialise OpenGL logging");
delete m_openglDebugger;
m_openglDebugger = nullptr;
}
}
InitProcs();
Init2DState();
// basic features
GLint maxtexsz = 0;
GLint maxunits = 0;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxtexsz);
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxunits);
m_max_units = maxunits;
m_max_tex_size = (maxtexsz) ? maxtexsz : 512;
// RGBA16 - available on ES via extension
m_extraFeatures |= isOpenGLES() ? hasExtension("GL_EXT_texture_norm16") ? kGLExtRGBA16 : kGLFeatNone : kGLExtRGBA16;
// Pixel buffer objects
bool buffer_procs = (MYTH_GLMAPBUFFERPROC)GetProcAddress("glMapBuffer") &&
(MYTH_GLUNMAPBUFFERPROC)GetProcAddress("glUnmapBuffer");
// Buffers are available by default (GL and GLES).
// Buffer mapping is available by extension
if ((isOpenGLES() && hasExtension("GL_OES_mapbuffer") && buffer_procs) ||
(hasExtension("GL_ARB_vertex_buffer_object") && buffer_procs))
m_extraFeatures |= kGLBufferMap;
// TODO combine fence functionality
// NVidia fence
if(hasExtension("GL_NV_fence") && m_glGenFencesNV && m_glDeleteFencesNV &&
m_glSetFenceNV && m_glFinishFenceNV)
m_extraFeatures |= kGLNVFence;
// Apple fence
if(hasExtension("GL_APPLE_fence") && m_glGenFencesAPPLE && m_glDeleteFencesAPPLE &&
m_glSetFenceAPPLE && m_glFinishFenceAPPLE)
m_extraFeatures |= kGLAppleFence;
// Framebuffer discard - GLES only
if (isOpenGLES() && hasExtension("GL_EXT_discard_framebuffer") && m_glDiscardFramebuffer)
m_extraFeatures |= kGLExtFBDiscard;
DebugFeatures();
m_extraFeaturesUsed = m_extraFeatures;
if (!CreateDefaultShaders())
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Failed to create default shaders");
return false;
}
LOG(VB_GENERAL, LOG_INFO, LOC + "Initialised MythRenderOpenGL");
return true;
}
#define GLYesNo(arg) (arg ? "Yes" : "No")
void MythRenderOpenGL::DebugFeatures(void)
{
static bool debugged = false;
if (debugged)
return;
debugged = true;
QSurfaceFormat fmt = format();
QString qtglversion = QString("OpenGL%1 %2.%3")
.arg(fmt.renderableType() == QSurfaceFormat::OpenGLES ? "ES" : "")
.arg(fmt.majorVersion()).arg(fmt.minorVersion());
QString qtglsurface = QString("RGBA: %1%2%3%4 Depth: %5 Stencil: %6")
.arg(fmt.redBufferSize()).arg(fmt.greenBufferSize())
.arg(fmt.greenBufferSize()).arg(fmt.alphaBufferSize())
.arg(fmt.depthBufferSize()).arg(fmt.stencilBufferSize());
LOG(VB_GENERAL, LOG_INFO, LOC + QString("OpenGL vendor : %1").arg((const char*)glGetString(GL_VENDOR)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("OpenGL renderer : %1").arg((const char*)glGetString(GL_RENDERER)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("OpenGL version : %1").arg((const char*)glGetString(GL_VERSION)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Qt platform : %1").arg(qApp->platformName()));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Qt OpenGL format : %1").arg(qtglversion));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Qt OpenGL surface : %1").arg(qtglsurface));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Max texture size : %1").arg(m_max_tex_size));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Max texture units : %1").arg(m_max_units));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Shaders : %1").arg(GLYesNo(m_features & Shaders)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("NPOT textures : %1").arg(GLYesNo(m_features & NPOTTextures)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Multitexturing : %1").arg(GLYesNo(m_features & Multitexture)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("RGBA16 textures : %1").arg(GLYesNo(m_extraFeatures & kGLExtRGBA16)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Buffer mapping : %1").arg(GLYesNo(m_extraFeatures & kGLBufferMap)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Framebuffer objects : %1").arg(GLYesNo(m_features & Framebuffers)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Framebuffer discard : %1").arg(GLYesNo(m_extraFeatures & kGLExtFBDiscard)));
LOG(VB_GENERAL, LOG_INFO, LOC + QString("Fence : %1")
.arg(GLYesNo((m_extraFeatures & kGLAppleFence) || (m_extraFeatures & kGLNVFence))));
// warnings
if (m_max_units < 3)
LOG(VB_GENERAL, LOG_WARNING, LOC + "Warning: Insufficient texture units for some features.");
}
uint MythRenderOpenGL::GetExtraFeatures(void) const
{
return m_extraFeaturesUsed;
}
QOpenGLFunctions::OpenGLFeatures MythRenderOpenGL::GetFeatures(void) const
{
return m_features;
}
bool MythRenderOpenGL::IsRecommendedRenderer(void)
{
bool recommended = true;
OpenGLLocker locker(this);
QString renderer = (const char*)glGetString(GL_RENDERER);
if (!(openGLFeatures() & Shaders))
{
LOG(VB_GENERAL, LOG_WARNING, LOC + "OpenGL has no shader support");
recommended = false;
}
else if (renderer.contains("Software Rasterizer", Qt::CaseInsensitive))
{
LOG(VB_GENERAL, LOG_WARNING, LOC + "OpenGL is using software rasterizer.");
recommended = false;
}
else if (renderer.contains("softpipe", Qt::CaseInsensitive))
{
LOG(VB_GENERAL, LOG_WARNING, LOC + "OpenGL seems to be using software "
"fallback. Please check your OpenGL driver installation, "
"configuration, and device permissions.");
recommended = false;
}
return recommended;
}
void MythRenderOpenGL::swapBuffers()
{
QOpenGLContext::swapBuffers(m_window);
}
void MythRenderOpenGL::setWidget(QWidget *Widget)
{
if (!Widget)
return;
m_window = Widget->windowHandle();
if (!m_window)
{
Widget = Widget->nativeParentWidget();
if (Widget)
m_window = Widget->windowHandle();
}
#ifdef ANDROID
// change all window surfacetypes to OpenGLSurface
// otherwise the raster gets painted on top of the GL surface
m_window->setSurfaceType(QWindow::OpenGLSurface);
QWidget* wNativeParent = w->nativeParentWidget();
if (wNativeParent)
wNativeParent->windowHandle()->setSurfaceType(QWindow::OpenGLSurface);
#endif
if (!create())
LOG(VB_GENERAL, LOG_WARNING, LOC + "setWidget create failed");
else if (Widget)
Widget->setAttribute(Qt::WA_PaintOnScreen);
}
void MythRenderOpenGL::makeCurrent()
{
m_lock.lock();
if (!m_lock_level++)
QOpenGLContext::makeCurrent(m_window);
}
void MythRenderOpenGL::doneCurrent()
{
// TODO add back QOpenGLContext::doneCurrent call
// once calls are better pipelined
m_lock_level--;
if (m_lock_level < 0)
LOG(VB_GENERAL, LOG_ERR, LOC + "Mis-matched calls to makeCurrent()");
m_lock.unlock();
}
void MythRenderOpenGL::Release(void)
{
#if !defined(Q_OS_WIN)
while (m_lock_level > 0)
doneCurrent();
#endif
}
void MythRenderOpenGL::MoveResizeWindow(const QRect &rect)
{
if (m_window)
m_window->setGeometry(rect);
}
void MythRenderOpenGL::SetViewPort(const QRect &rect, bool viewportonly)
{
if (rect == m_viewport)
return;
makeCurrent();
m_viewport = rect;
glViewport(m_viewport.left(), m_viewport.top(),
m_viewport.width(), m_viewport.height());
if (!viewportonly)
SetMatrixView();
doneCurrent();
}
void MythRenderOpenGL::Flush(bool use_fence)
{
if (!m_flushEnabled)
return;
makeCurrent();
if ((m_extraFeaturesUsed & kGLAppleFence) &&
(m_fence && use_fence))
{
m_glSetFenceAPPLE(m_fence);
m_glFinishFenceAPPLE(m_fence);
}
else if ((m_extraFeaturesUsed & kGLNVFence) &&
(m_fence && use_fence))
{
m_glSetFenceNV(m_fence, GL_ALL_COMPLETED_NV);
m_glFinishFenceNV(m_fence);
}
else
{
glFlush();
}
doneCurrent();
}
void MythRenderOpenGL::SetBlend(bool enable)
{
makeCurrent();
if (enable && !m_blend)
glEnable(GL_BLEND);
else if (!enable && m_blend)
glDisable(GL_BLEND);
m_blend = enable;
doneCurrent();
}
void MythRenderOpenGL::SetBackground(int r, int g, int b, int a)
{
uint32_t tmp = (r << 24) + (g << 16) + (b << 8) + a;
if (tmp == m_background)
return;
m_background = tmp;
makeCurrent();
glClearColor(r / 255.0, g / 255.0, b / 255.0, a / 255.0);
doneCurrent();
}
void MythRenderOpenGL::SetFence(void)
{
if (!m_flushEnabled)
return;
makeCurrent();
if (m_extraFeaturesUsed & kGLAppleFence)
{
m_glGenFencesAPPLE(1, &m_fence);
if (m_fence)
LOG(VB_PLAYBACK, LOG_INFO, LOC + "Using GL_APPLE_fence");
}
else if (m_extraFeaturesUsed & kGLNVFence)
{
m_glGenFencesNV(1, &m_fence);
if (m_fence)
LOG(VB_PLAYBACK, LOG_INFO, LOC + "Using GL_NV_fence");
}
doneCurrent();
}
void MythRenderOpenGL::DeleteFence(void)
{
if (m_fence)
{
makeCurrent();
if (m_extraFeaturesUsed & kGLAppleFence)
m_glDeleteFencesAPPLE(1, &m_fence);
else if (m_extraFeaturesUsed & kGLNVFence)
m_glDeleteFencesNV(1, &m_fence);
m_fence = 0;
doneCurrent();
}
}
MythGLTexture* MythRenderOpenGL::CreateTexture(QSize Size,
QOpenGLTexture::PixelType PixelType,
QOpenGLTexture::PixelFormat PixelFormat,
QOpenGLTexture::Filter Filter,
QOpenGLTexture::WrapMode Wrap,
QOpenGLTexture::TextureFormat Format)
{
OpenGLLocker locker(this);
uint datasize = GetBufferSize(Size, PixelFormat, PixelType);
if (!datasize)
return nullptr;
QOpenGLTexture *texture = new QOpenGLTexture(QOpenGLTexture::Target2D);
texture->setAutoMipMapGenerationEnabled(false);
texture->setMipLevels(1);
texture->setSize(Size.width(), Size.height()); // this triggers creation
if (!texture->textureId())
{
LOG(VB_GENERAL, LOG_INFO, LOC + "Failed to create texure");
delete texture;
return nullptr;
}
if (Format == QOpenGLTexture::NoFormat)
{
if (isOpenGLES() && format().majorVersion() < 3)
Format = QOpenGLTexture::RGBAFormat;
else
Format = QOpenGLTexture::RGBA8_UNorm;
}
texture->setFormat(Format);
texture->allocateStorage(PixelFormat, PixelType);
texture->setMinMagFilters(Filter, Filter);
texture->setWrapMode(Wrap);
MythGLTexture *result = new MythGLTexture(texture);
result->m_pixelFormat = PixelFormat;
result->m_pixelType = PixelType;
result->m_vbo = CreateVBO(kVertexSize);
result->m_totalSize = GetTextureSize(Size);
result->m_bufferSize = datasize;
result->m_size = Size;
return result;
}
MythGLTexture* MythRenderOpenGL::CreateTextureFromQImage(QImage *Image)
{
if (!Image)
return nullptr;
OpenGLLocker locker(this);
QOpenGLTexture *texture = new QOpenGLTexture(*Image, QOpenGLTexture::DontGenerateMipMaps);
if (!texture->textureId())
{
LOG(VB_GENERAL, LOG_INFO, LOC + "Failed to create texure");
delete texture;
return nullptr;
}
texture->setMinMagFilters(QOpenGLTexture::Linear, QOpenGLTexture::Linear);
texture->setWrapMode(QOpenGLTexture::ClampToEdge);
MythGLTexture *result = new MythGLTexture(texture);
result->m_texture = texture;
result->m_vbo = CreateVBO(kVertexSize);
result->m_totalSize = GetTextureSize(Image->size());
// N.B. Format and type per qopengltexure.cpp
result->m_pixelFormat = QOpenGLTexture::RGBA;
result->m_pixelType = QOpenGLTexture::UInt8;
result->m_bufferSize = GetBufferSize(result->m_totalSize, QOpenGLTexture::RGBA, QOpenGLTexture::UInt8);
result->m_size = Image->size();
result->m_crop = true;
return result;
}
MythGLTexture* MythRenderOpenGL::CreateHelperTexture(void)
{
makeCurrent();
uint width = m_max_tex_size;
MythGLTexture *texture = CreateTexture(QSize(width, 1),
QOpenGLTexture::Float32,
QOpenGLTexture::RGBA,
QOpenGLTexture::Linear,
QOpenGLTexture::Repeat,
QOpenGLTexture::RGBA16_UNorm);
float *buf = nullptr;
buf = new float[texture->m_bufferSize];
float *ref = buf;
for (uint i = 0; i < width; i++)
{
float x = (((float)i) + 0.5f) / (float)width;
StoreBicubicWeights(x, ref);
ref += 4;
}
StoreBicubicWeights(0, buf);
StoreBicubicWeights(1, &buf[(width - 1) << 2]);
EnableTextures();
texture->m_texture->bind();
texture->m_texture->setData(texture->m_pixelFormat, texture->m_pixelType, buf);
LOG(VB_PLAYBACK, LOG_INFO, LOC +
QString("Created bicubic helper texture (%1 samples)") .arg(width));
delete [] buf;
doneCurrent();
return texture;
}
QSize MythRenderOpenGL::GetTextureSize(const QSize &size)
{
if (m_features & NPOTTextures)
return size;
int w = 64;
int h = 64;
while (w < size.width())
w *= 2;
while (h < size.height())
h *= 2;
return QSize(w, h);
}
int MythRenderOpenGL::GetTextureDataSize(MythGLTexture *Texture)
{
if (Texture)
return Texture->m_bufferSize;
return 0;
}
void MythRenderOpenGL::SetTextureFilters(MythGLTexture *Texture, QOpenGLTexture::Filter Filter, QOpenGLTexture::WrapMode Wrap)
{
if (!Texture || (Texture && !Texture->m_texture))
return;
makeCurrent();
EnableTextures();
Texture->m_texture->bind();
Texture->m_texture->setWrapMode(Wrap);
Texture->m_texture->setMinMagFilters(Filter, Filter);
doneCurrent();
}
/*! \brief Set the texture filters for the given OpenGL texture object
*
* \note This is used to set filters for textures attached to QOpenGLFramebufferObjects.
* By default, these have GL_NEAREST set for the min/mag filters and there is no
* method to change them. Furthermore we cannot wrap these textures in a QOpenGLTexture
* and use the functionality in that class. So back to basics... and convert between
* QOpenGLTexture and GL enums.
*/
void MythRenderOpenGL::SetTextureFilters(GLuint Texture, QOpenGLTexture::Filter Filter, QOpenGLTexture::WrapMode)
{
if (!Texture)
return;
GLenum wrap = GL_CLAMP_TO_EDGE;
GLenum minmag = GL_NEAREST;
if (Filter == QOpenGLTexture::Linear)
minmag = GL_LINEAR;
makeCurrent();
EnableTextures();
glBindTexture(GL_TEXTURE_2D, Texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, minmag);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, minmag);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap);
doneCurrent();
}
void MythRenderOpenGL::ActiveTexture(int active_tex)
{
if (!(m_features & Multitexture))
return;
makeCurrent();
if (m_active_tex != active_tex)
{
glActiveTexture(active_tex);
m_active_tex = active_tex;
}
doneCurrent();
}
void MythRenderOpenGL::StoreBicubicWeights(float x, float *dst)
{
float w0 = (((-1 * x + 3) * x - 3) * x + 1) / 6;
float w1 = ((( 3 * x - 6) * x + 0) * x + 4) / 6;
float w2 = (((-3 * x + 3) * x + 3) * x + 1) / 6;
float w3 = ((( 1 * x + 0) * x + 0) * x + 0) / 6;
*dst++ = 1 + x - w1 / (w0 + w1);
*dst++ = 1 - x + w3 / (w2 + w3);
*dst++ = w0 + w1;
*dst++ = 0;
}
void MythRenderOpenGL::EnableTextures(void)
{
if (isOpenGLES() || m_activeTextureTarget)
return;
makeCurrent();
glEnable(GL_TEXTURE_2D);
m_activeTextureTarget = GL_TEXTURE_2D;
doneCurrent();
}
void MythRenderOpenGL::DisableTextures(void)
{
if (isOpenGLES() || !m_activeTextureTarget)
return;
makeCurrent();
glDisable(m_activeTextureTarget);
m_activeTextureTarget = 0;
doneCurrent();
}
void MythRenderOpenGL::DeleteTexture(MythGLTexture *Texture)
{
if (!Texture)
return;
makeCurrent();
// N.B. Don't delete m_textureId - it is owned externally
if (Texture->m_texture)
delete Texture->m_texture;
if (Texture->m_data)
delete [] Texture->m_data;
if (Texture->m_vbo)
delete Texture->m_vbo;
delete Texture;
Flush(true);
doneCurrent();
}
QOpenGLFramebufferObject* MythRenderOpenGL::CreateFramebuffer(QSize &Size)
{
if (!(m_features & Framebuffers))
return nullptr;
OpenGLLocker locker(this);
QOpenGLFramebufferObject *framebuffer = new QOpenGLFramebufferObject(Size);
if (framebuffer->isValid())
{
if (framebuffer->isBound())
{
m_activeFramebuffer = framebuffer;
BindFramebuffer(nullptr);
}
Flush(true);
return framebuffer;
}
LOG(VB_GENERAL, LOG_ERR, "Failed to create framebuffer object");
delete framebuffer;
return nullptr;
}
MythGLTexture* MythRenderOpenGL::CreateFramebufferTexture(QOpenGLFramebufferObject *Framebuffer)
{
if (!Framebuffer)
return nullptr;
MythGLTexture *texture = new MythGLTexture(Framebuffer->texture());
texture->m_size = texture->m_totalSize = Framebuffer->size();
texture->m_vbo = CreateVBO(kVertexSize);
texture->m_flip = false;
return texture;
}
void MythRenderOpenGL::DeleteFramebuffer(QOpenGLFramebufferObject *Framebuffer)
{
if (Framebuffer)
{
makeCurrent();
delete Framebuffer;
doneCurrent();
}
}
void MythRenderOpenGL::BindFramebuffer(QOpenGLFramebufferObject *Framebuffer)
{
if (Framebuffer == m_activeFramebuffer)
return;
makeCurrent();
if (Framebuffer == nullptr)
QOpenGLFramebufferObject::bindDefault();
else
Framebuffer->bind();
doneCurrent();
m_activeFramebuffer = Framebuffer;
}
void MythRenderOpenGL::ClearFramebuffer(void)
{
makeCurrent();
glClear(GL_COLOR_BUFFER_BIT);
doneCurrent();
}
void MythRenderOpenGL::DiscardFramebuffer(QOpenGLFramebufferObject *Framebuffer)
{
if (!(m_extraFeaturesUsed & kGLExtFBDiscard))
return;
makeCurrent();
static const GLenum fbdiscards[] = { GL_COLOR_ATTACHMENT0 };
static const GLenum dfdiscards[] = { GL_COLOR_EXT };
BindFramebuffer(Framebuffer);
m_glDiscardFramebuffer(GL_FRAMEBUFFER, 1, (Framebuffer ? true : defaultFramebufferObject()) ? fbdiscards : dfdiscards);
doneCurrent();
}
void MythRenderOpenGL::DrawBitmap(MythGLTexture *Texture, QOpenGLFramebufferObject *Target,
const QRect &Source, const QRect &Destination,
QOpenGLShaderProgram *Program, int alpha,
int red, int green, int blue)
{
makeCurrent();
BindFramebuffer(Target);
DrawBitmapPriv(Texture, Source, Destination, Program, alpha, red, green, blue);
doneCurrent();
}
void MythRenderOpenGL::DrawBitmap(MythGLTexture **Textures, uint TextureCount,
QOpenGLFramebufferObject *Target,
const QRect &Source, const QRect &Destination,
QOpenGLShaderProgram *Program)
{
if (!Textures || !TextureCount)
return;
makeCurrent();
BindFramebuffer(Target);
DrawBitmapPriv(Textures, TextureCount, Source, Destination, Program);
doneCurrent();
}
void MythRenderOpenGL::DrawRect(QOpenGLFramebufferObject *target,
const QRect &area, const QBrush &fillBrush,
const QPen &linePen, int alpha)
{
makeCurrent();
BindFramebuffer(target);
DrawRectPriv(area, fillBrush, linePen, alpha);
doneCurrent();
}
void MythRenderOpenGL::DrawRoundRect(QOpenGLFramebufferObject *target,
const QRect &area, int cornerRadius,
const QBrush &fillBrush,
const QPen &linePen, int alpha)
{
makeCurrent();
BindFramebuffer(target);
DrawRoundRectPriv(area, cornerRadius, fillBrush, linePen, alpha);
doneCurrent();
}
inline void MythRenderOpenGL::glVertexAttribPointerI(
GLuint index, GLint size, GLenum type, GLboolean normalize,
GLsizei stride, const GLuint value)
{
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
glVertexAttribPointer(index, size, type, normalize,
stride, (const char *)value);
#pragma GCC diagnostic pop
}
void MythRenderOpenGL::DrawBitmapPriv(MythGLTexture *Texture, const QRect &Source,
const QRect &Destination,
QOpenGLShaderProgram *Program,
int alpha, int red, int green, int blue)
{
if (!Texture || (Texture && !((Texture->m_texture || Texture->m_textureId) && Texture->m_vbo)))
return;
if (Program == nullptr)
Program = m_defaultPrograms[kShaderDefault];
SetShaderProgramParams(Program, m_projection, "u_projection");
SetShaderProgramParams(Program, m_transforms.top(), "u_transform");
EnableTextures();
Program->setUniformValue("s_texture0", 0);
ActiveTexture(GL_TEXTURE0);
if (Texture->m_texture)
Texture->m_texture->bind();
else
glBindTexture(GL_TEXTURE_2D, Texture->m_textureId);
QOpenGLBuffer* buffer = Texture->m_vbo;
buffer->bind();
if (UpdateTextureVertices(Texture, Source, Destination))
{
if (m_extraFeaturesUsed & kGLBufferMap)
{
void* target = buffer->map(QOpenGLBuffer::WriteOnly);
if (target)
memcpy(target, Texture->m_vertexData, kVertexSize);
buffer->unmap();
}
else
{
buffer->write(0, Texture->m_vertexData, kVertexSize);
}
}
glEnableVertexAttribArray(VERTEX_INDEX);
glEnableVertexAttribArray(TEXTURE_INDEX);
glVertexAttribPointerI(VERTEX_INDEX, VERTEX_SIZE, GL_FLOAT, GL_FALSE,
VERTEX_SIZE * sizeof(GLfloat),
kVertexOffset);
glVertexAttrib4f(COLOR_INDEX, red / 255.0, green / 255.0, blue / 255.0, alpha / 255.0);
glVertexAttribPointerI(TEXTURE_INDEX, TEXTURE_SIZE, GL_FLOAT, GL_FALSE,
TEXTURE_SIZE * sizeof(GLfloat),
kTextureOffset);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableVertexAttribArray(TEXTURE_INDEX);
glDisableVertexAttribArray(VERTEX_INDEX);
buffer->release(QOpenGLBuffer::VertexBuffer);
}
void MythRenderOpenGL::DrawBitmapPriv(MythGLTexture **Textures, uint TextureCount,
const QRect &Source, const QRect &Destination,
QOpenGLShaderProgram *Program)
{
if (Program == nullptr)
Program = m_defaultPrograms[kShaderDefault];
MythGLTexture* first = Textures[0];
if (!first || (first && !((first->m_texture || first->m_textureId) && first->m_vbo)))
return;
SetShaderProgramParams(Program, m_projection, "u_projection");
SetShaderProgramParams(Program, m_transforms.top(), "u_transform");
EnableTextures();
uint active_tex = 0;
for (uint i = 0; i < TextureCount; i++)
{
QString uniform = QString("s_texture%1").arg(active_tex);
Program->setUniformValue(qPrintable(uniform), active_tex);
ActiveTexture(GL_TEXTURE0 + active_tex++);
if (Textures[i]->m_texture)
Textures[i]->m_texture->bind();
else
glBindTexture(GL_TEXTURE_2D, Textures[i]->m_textureId);
}
QOpenGLBuffer* buffer = first->m_vbo;
buffer->bind();
if (UpdateTextureVertices(first, Source, Destination))
{
if (m_extraFeaturesUsed & kGLBufferMap)
{
void* target = buffer->map(QOpenGLBuffer::WriteOnly);
if (target)
memcpy(target, first->m_vertexData, kVertexSize);
buffer->unmap();
}
else
{
buffer->write(0, first->m_vertexData, kVertexSize);
}
}
glEnableVertexAttribArray(VERTEX_INDEX);
glEnableVertexAttribArray(TEXTURE_INDEX);