GLuint QGLPixelBuffer::generateDynamicTexture() const
{
Q_D(const QGLPixelBuffer);
if (!d->fbo)
return 0;
if (d->fbo->format().samples() > 0
&& QOpenGLExtensions(QOpenGLContext::currentContext())
.hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit))
{
if (!d->blit_fbo)
const_cast<QOpenGLFramebufferObject *&>(d->blit_fbo) = new QOpenGLFramebufferObject(d->req_size);
} else {
return d->fbo->texture();
}
GLuint texture;
QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
funcs->glGenTextures(1, &texture);
funcs->glBindTexture(GL_TEXTURE_2D, texture);
funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, d->req_size.width(), d->req_size.height(), 0,
GL_RGBA, GL_UNSIGNED_BYTE, 0);
return texture;
}
static void uploadTextures(QOpenGLContext* context, SharedFrame& frame, GLuint texture[])
{
int width = frame.get_image_width();
int height = frame.get_image_height();
const uint8_t* image = frame.get_image();
QOpenGLFunctions* f = context->functions();
// Upload each plane of YUV to a texture.
if (texture[0] && texture[1] && texture[2])
f->glDeleteTextures(3, texture);
check_error(f);
f->glGenTextures(3, texture);
check_error(f);
f->glPixelStorei(GL_UNPACK_ROW_LENGTH, width);
f->glBindTexture (GL_TEXTURE_2D, texture[0]);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error(f);
f->glTexImage2D (GL_TEXTURE_2D, 0, GL_RED, width, height, 0,
GL_RED, GL_UNSIGNED_BYTE, image);
check_error(f);
f->glBindTexture (GL_TEXTURE_2D, texture[1]);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error(f);
int y = context->isOpenGLES() ? 2 : 4;
f->glTexImage2D (GL_TEXTURE_2D, 0, GL_RED, width/2, height/y, 0,
GL_RED, GL_UNSIGNED_BYTE, image + width * height);
check_error(f);
f->glBindTexture (GL_TEXTURE_2D, texture[2]);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
check_error(f);
f->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error(f);
f->glTexImage2D (GL_TEXTURE_2D, 0, GL_RED, width/2, height/y, 0,
GL_RED, GL_UNSIGNED_BYTE, image + width * height + width/2 * height/2);
check_error(f);
}
//TODO move this into a separate centralized texture management class
void QWaylandBufferMaterial::ensureTextures(int count)
{
QOpenGLFunctions *gl = QOpenGLContext::currentContext()->functions();
const GLenum target = bufferTypes[m_format].textureTarget;
GLuint texture;
for (int plane = m_textures.size(); plane < count; plane++) {
gl->glGenTextures(1, &texture);
gl->glBindTexture(target, texture);
setTextureParameters(target);
m_textures << texture;
}
}
void SSGTexture::bind()
{
QOpenGLContext *context = QOpenGLContext::currentContext();
QOpenGLFunctions *funcs = context->functions();
if (!m_dirty_texture) {
funcs->glBindTexture(GL_TEXTURE_2D, m_texture_id);
if ((minMipmapFiltering() != SSGTexture::None || magMipmapFiltering() != SSGTexture::None) && !m_mipmaps_generated) {
funcs->glGenerateMipmap(GL_TEXTURE_2D);
m_mipmaps_generated = true;
}
updateBindOptions(m_dirty_bind_options);
m_dirty_bind_options = false;
return;
}
m_dirty_texture = false;
if (!m_image || !m_image->isValid()) {
if (m_texture_id && m_owns_texture) {
funcs->glDeleteTextures(1, &m_texture_id);
}
m_texture_id = 0;
m_texture_size = QSize();
m_has_alpha = false;
return;
}
if (m_texture_id == 0)
funcs->glGenTextures(1, &m_texture_id);
funcs->glBindTexture(GL_TEXTURE_2D, m_texture_id);
updateBindOptions(m_dirty_bind_options);
funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, m_texture_size.width(), m_texture_size.height(), 0, GL_RGBA, GL_UNSIGNED_SHORT, m_image->rawData().get());
if (minMipmapFiltering() != SSGTexture::None || magMipmapFiltering() != SSGTexture::None) {
funcs->glGenerateMipmap(GL_TEXTURE_2D);
m_mipmaps_generated = true;
}
m_texture_rect = QRectF(0, 0, 1, 1);
m_dirty_bind_options = false;
// if (!m_retain_image)
// m_image.reset();
}
void QQuickContext2DFBOTexture::endPainting()
{
QQuickContext2DTexture::endPainting();
// There may not be an FBO due to zero width or height.
if (!m_fbo)
return;
if (m_multisampledFbo)
QOpenGLFramebufferObject::blitFramebuffer(m_fbo, m_multisampledFbo);
if (m_gl) {
/* When rendering happens on the render thread, the fbo's texture is
* used directly for display. If we are on the GUI thread or a
* dedicated Canvas render thread, we need to decouple the FBO from
* the texture we are displaying in the SG rendering thread to avoid
* stalls and read/write issues in the GL pipeline as the FBO's texture
* could then potentially be used in different threads.
*
* We could have gotten away with only one display texture, but this
* would have implied that beginPainting would have to wait for SG
* to release that texture.
*/
if (m_onCustomThread)
m_mutex.lock();
QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
if (m_displayTextures[0] == 0) {
m_displayTexture = 1;
funcs->glGenTextures(2, m_displayTextures);
}
m_fbo->bind();
GLuint target = m_displayTexture == 0 ? 1 : 0;
funcs->glBindTexture(GL_TEXTURE_2D, m_displayTextures[target]);
funcs->glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, m_fbo->width(), m_fbo->height(), 0);
if (m_onCustomThread)
m_mutex.unlock();
}
m_fbo->bindDefault();
}
void SSGQuickLayer::bind()
{
#ifndef QT_NO_DEBUG
if (!m_recursive && m_fbo && ((m_multisampling && m_secondaryFbo->isBound()) || m_fbo->isBound()))
qWarning("ShaderEffectSource: \'recursive\' must be set to true when rendering recursively.");
#endif
QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
if (!m_fbo && m_format == GL_RGBA32F) {
if (m_transparentTexture == 0) {
funcs->glGenTextures(1, &m_transparentTexture);
funcs->glBindTexture(GL_TEXTURE_2D, m_transparentTexture);
const float zero[4] = {0, 0, 0, 0};
funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, 1, 1, 0, GL_RGBA, GL_FLOAT, zero);
} else {
funcs->glBindTexture(GL_TEXTURE_2D, m_transparentTexture);
}
} else {
funcs->glBindTexture(GL_TEXTURE_2D, m_fbo ? m_fbo->texture() : 0);
updateBindOptions();
}
}
GLuint QOpenGL2GradientCache::addCacheElement(quint64 hash_val, const QGradient &gradient, qreal opacity)
{
QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();
if (cache.size() == maxCacheSize()) {
int elem_to_remove = qrand() % maxCacheSize();
quint64 key = cache.keys()[elem_to_remove];
// need to call glDeleteTextures on each removed cache entry:
QOpenGLGradientColorTableHash::const_iterator it = cache.constFind(key);
do {
funcs->glDeleteTextures(1, &it.value().texId);
} while (++it != cache.constEnd() && it.key() == key);
cache.remove(key); // may remove more than 1, but OK
}
CacheInfo cache_entry(gradient.stops(), opacity, gradient.interpolationMode());
uint buffer[1024];
generateGradientColorTable(gradient, buffer, paletteSize(), opacity);
funcs->glGenTextures(1, &cache_entry.texId);
funcs->glBindTexture(GL_TEXTURE_2D, cache_entry.texId);
funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, paletteSize(), 1,
0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
return cache.insert(hash_val, cache_entry).value().texId;
}
void bind()
{
QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions();
QMutexLocker lock(&m_frameMutex);
if (m_frame.isValid()) {
if (m_frame.map(QAbstractVideoBuffer::ReadOnly)) {
QSize textureSize = m_frame.size();
int stride = m_frame.bytesPerLine();
switch (m_frame.pixelFormat()) {
case QVideoFrame::Format_RGB565:
stride /= 2;
break;
default:
stride /= 4;
}
m_width = qreal(m_frame.width()) / stride;
textureSize.setWidth(stride);
if (m_textureSize != textureSize) {
if (!m_textureSize.isEmpty())
functions->glDeleteTextures(1, &m_textureId);
functions->glGenTextures(1, &m_textureId);
m_textureSize = textureSize;
}
GLint dataType = GL_UNSIGNED_BYTE;
GLint dataFormat = GL_RGBA;
if (m_frame.pixelFormat() == QVideoFrame::Format_RGB565) {
dataType = GL_UNSIGNED_SHORT_5_6_5;
dataFormat = GL_RGB;
}
GLint previousAlignment;
functions->glGetIntegerv(GL_UNPACK_ALIGNMENT, &previousAlignment);
functions->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
functions->glActiveTexture(GL_TEXTURE0);
functions->glBindTexture(GL_TEXTURE_2D, m_textureId);
functions->glTexImage2D(GL_TEXTURE_2D, 0, dataFormat,
m_textureSize.width(), m_textureSize.height(),
0, dataFormat, dataType, m_frame.bits());
functions->glPixelStorei(GL_UNPACK_ALIGNMENT, previousAlignment);
functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
functions->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
m_frame.unmap();
}
m_frame = QVideoFrame();
} else {
functions->glActiveTexture(GL_TEXTURE0);
functions->glBindTexture(GL_TEXTURE_2D, m_textureId);
}
}
GLuint QOpenGLTextureCache::bindTexture(QOpenGLContext *context, qint64 key, const QImage &image, BindOptions options)
{
GLuint id;
QOpenGLFunctions *funcs = context->functions();
funcs->glGenTextures(1, &id);
funcs->glBindTexture(GL_TEXTURE_2D, id);
QImage tx;
GLenum externalFormat;
GLenum internalFormat;
GLuint pixelType;
QImage::Format targetFormat = QImage::Format_Invalid;
const bool isOpenGL12orBetter = !context->isOpenGLES() && (context->format().majorVersion() >= 2 || context->format().minorVersion() >= 2);
switch (image.format()) {
case QImage::Format_RGB32:
case QImage::Format_ARGB32:
case QImage::Format_ARGB32_Premultiplied:
if (isOpenGL12orBetter) {
externalFormat = GL_BGRA;
internalFormat = GL_RGBA;
pixelType = GL_UNSIGNED_INT_8_8_8_8_REV;
} else {
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
// Without GL_UNSIGNED_INT_8_8_8_8_REV, BGRA only matches ARGB on little endian.
break;
#endif
if (static_cast<QOpenGLExtensions*>(context->functions())->hasOpenGLExtension(QOpenGLExtensions::BGRATextureFormat)) {
// GL_EXT_bgra or GL_EXT_texture_format_BGRA8888 extensions.
if (context->isOpenGLES()) {
// The GL_EXT_texture_format_BGRA8888 extension requires the internal format to match the external.
externalFormat = internalFormat = GL_BGRA;
} else {
// OpenGL BGRA/BGR format is not allowed as an internal format
externalFormat = GL_BGRA;
internalFormat = GL_RGBA;
}
pixelType = GL_UNSIGNED_BYTE;
} else if (context->isOpenGLES() && context->hasExtension(QByteArrayLiteral("GL_APPLE_texture_format_BGRA8888"))) {
// Is only allowed as an external format like OpenGL.
externalFormat = GL_BGRA;
internalFormat = GL_RGBA;
pixelType = GL_UNSIGNED_BYTE;
} else {
// No support for direct ARGB32 upload.
break;
}
}
targetFormat = image.format();
break;
case QImage::Format_BGR30:
case QImage::Format_A2BGR30_Premultiplied:
if (isOpenGL12orBetter || (context->isOpenGLES() && context->format().majorVersion() >= 3)) {
pixelType = GL_UNSIGNED_INT_2_10_10_10_REV;
externalFormat = GL_RGBA;
internalFormat = GL_RGB10_A2;
targetFormat = image.format();
}
break;
case QImage::Format_RGB30:
case QImage::Format_A2RGB30_Premultiplied:
if (isOpenGL12orBetter) {
pixelType = GL_UNSIGNED_INT_2_10_10_10_REV;
externalFormat = GL_BGRA;
internalFormat = GL_RGB10_A2;
targetFormat = image.format();
} else if (context->isOpenGLES() && context->format().majorVersion() >= 3) {
pixelType = GL_UNSIGNED_INT_2_10_10_10_REV;
externalFormat = GL_RGBA;
internalFormat = GL_RGB10_A2;
targetFormat = QImage::Format_A2BGR30_Premultiplied;
}
break;
case QImage::Format_RGB444:
case QImage::Format_RGB555:
case QImage::Format_RGB16:
if (isOpenGL12orBetter || context->isOpenGLES()) {
externalFormat = internalFormat = GL_RGB;
pixelType = GL_UNSIGNED_SHORT_5_6_5;
targetFormat = QImage::Format_RGB16;
}
break;
case QImage::Format_RGB666:
case QImage::Format_RGB888:
externalFormat = internalFormat = GL_RGB;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = QImage::Format_RGB888;
break;
case QImage::Format_RGBX8888:
case QImage::Format_RGBA8888:
case QImage::Format_RGBA8888_Premultiplied:
externalFormat = internalFormat = GL_RGBA;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = image.format();
break;
case QImage::Format_Indexed8:
if (options & UseRedFor8BitBindOption) {
externalFormat = internalFormat = GL_RED;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = image.format();
}
break;
case QImage::Format_Alpha8:
if (options & UseRedFor8BitBindOption) {
externalFormat = internalFormat = GL_RED;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = image.format();
} else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) {
externalFormat = internalFormat = GL_ALPHA;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = image.format();
}
break;
case QImage::Format_Grayscale8:
if (options & UseRedFor8BitBindOption) {
externalFormat = internalFormat = GL_RED;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = image.format();
} else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) {
externalFormat = internalFormat = GL_LUMINANCE;
pixelType = GL_UNSIGNED_BYTE;
targetFormat = image.format();
}
break;
default:
break;
}
if (targetFormat == QImage::Format_Invalid) {
externalFormat = internalFormat = GL_RGBA;
pixelType = GL_UNSIGNED_BYTE;
if (!image.hasAlphaChannel())
targetFormat = QImage::Format_RGBX8888;
else
targetFormat = QImage::Format_RGBA8888;
}
if (options & PremultipliedAlphaBindOption) {
if (targetFormat == QImage::Format_ARGB32)
targetFormat = QImage::Format_ARGB32_Premultiplied;
else if (targetFormat == QImage::Format_RGBA8888)
targetFormat = QImage::Format_RGBA8888_Premultiplied;
} else {
if (targetFormat == QImage::Format_ARGB32_Premultiplied)
targetFormat = QImage::Format_ARGB32;
else if (targetFormat == QImage::Format_RGBA8888_Premultiplied)
targetFormat = QImage::Format_RGBA8888;
}
if (image.format() != targetFormat)
tx = image.convertToFormat(targetFormat);
else
tx = image;
funcs->glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, tx.width(), tx.height(), 0, externalFormat, pixelType, const_cast<const QImage &>(tx).bits());
int cost = tx.width() * tx.height() * tx.depth() / (1024 * 8);
m_cache.insert(key, new QOpenGLCachedTexture(id, options, context), cost);
return id;
}
void QSGDistanceFieldGlyphCache::saveTexture(GLuint textureId, int width, int height) const
{
QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions();
GLuint fboId;
functions->glGenFramebuffers(1, &fboId);
GLuint tmpTexture = 0;
functions->glGenTextures(1, &tmpTexture);
functions->glBindTexture(GL_TEXTURE_2D, tmpTexture);
functions->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
functions->glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
functions->glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
functions->glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
functions->glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
functions->glBindTexture(GL_TEXTURE_2D, 0);
functions->glBindFramebuffer(GL_FRAMEBUFFER_EXT, fboId);
functions->glFramebufferTexture2D(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D,
tmpTexture, 0);
functions->glActiveTexture(GL_TEXTURE0);
functions->glBindTexture(GL_TEXTURE_2D, textureId);
functions->glDisable(GL_STENCIL_TEST);
functions->glDisable(GL_DEPTH_TEST);
functions->glDisable(GL_SCISSOR_TEST);
functions->glDisable(GL_BLEND);
GLfloat textureCoordinateArray[8];
textureCoordinateArray[0] = 0.0f;
textureCoordinateArray[1] = 0.0f;
textureCoordinateArray[2] = 1.0f;
textureCoordinateArray[3] = 0.0f;
textureCoordinateArray[4] = 1.0f;
textureCoordinateArray[5] = 1.0f;
textureCoordinateArray[6] = 0.0f;
textureCoordinateArray[7] = 1.0f;
GLfloat vertexCoordinateArray[8];
vertexCoordinateArray[0] = -1.0f;
vertexCoordinateArray[1] = -1.0f;
vertexCoordinateArray[2] = 1.0f;
vertexCoordinateArray[3] = -1.0f;
vertexCoordinateArray[4] = 1.0f;
vertexCoordinateArray[5] = 1.0f;
vertexCoordinateArray[6] = -1.0f;
vertexCoordinateArray[7] = 1.0f;
functions->glViewport(0, 0, width, height);
functions->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, vertexCoordinateArray);
functions->glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, textureCoordinateArray);
{
static const char *vertexShaderSource =
"attribute vec4 vertexCoordsArray; \n"
"attribute vec2 textureCoordArray; \n"
"varying vec2 textureCoords; \n"
"void main(void) \n"
"{ \n"
" gl_Position = vertexCoordsArray; \n"
" textureCoords = textureCoordArray; \n"
"} \n";
static const char *fragmentShaderSource =
"varying vec2 textureCoords; \n"
"uniform sampler2D texture; \n"
"void main() \n"
"{ \n"
" gl_FragColor = texture2D(texture, textureCoords); \n"
"} \n";
GLuint vertexShader = functions->glCreateShader(GL_VERTEX_SHADER);
GLuint fragmentShader = functions->glCreateShader(GL_FRAGMENT_SHADER);
if (vertexShader == 0 || fragmentShader == 0) {
GLenum error = functions->glGetError();
qWarning("QSGDistanceFieldGlyphCache::saveTexture: Failed to create shaders. (GL error: %x)",
error);
return;
}
functions->glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
functions->glShaderSource(fragmentShader, 1, &fragmentShaderSource, NULL);
functions->glCompileShader(vertexShader);
GLint len = 1;
functions->glGetShaderiv(vertexShader, GL_INFO_LOG_LENGTH, &len);
char infoLog[2048];
functions->glGetShaderInfoLog(vertexShader, 2048, NULL, infoLog);
if (qstrlen(infoLog) > 0)
qWarning("Problems compiling vertex shader:\n %s", infoLog);
functions->glCompileShader(fragmentShader);
functions->glGetShaderInfoLog(fragmentShader, 2048, NULL, infoLog);
if (qstrlen(infoLog) > 0)
qWarning("Problems compiling fragment shader:\n %s", infoLog);
GLuint shaderProgram = functions->glCreateProgram();
functions->glAttachShader(shaderProgram, vertexShader);
functions->glAttachShader(shaderProgram, fragmentShader);
functions->glBindAttribLocation(shaderProgram, 0, "vertexCoordsArray");
functions->glBindAttribLocation(shaderProgram, 1, "textureCoordArray");
functions->glLinkProgram(shaderProgram);
functions->glGetProgramInfoLog(shaderProgram, 2048, NULL, infoLog);
if (qstrlen(infoLog) > 0)
qWarning("Problems linking shaders:\n %s", infoLog);
functions->glUseProgram(shaderProgram);
functions->glEnableVertexAttribArray(0);
functions->glEnableVertexAttribArray(1);
int textureUniformLocation = functions->glGetUniformLocation(shaderProgram, "texture");
functions->glUniform1i(textureUniformLocation, 0);
}
functions->glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
{
GLenum error = functions->glGetError();
if (error != GL_NO_ERROR)
qWarning("glDrawArrays reported error 0x%x", error);
}
uchar *data = new uchar[width * height * 4];
functions->glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
QImage image(data, width, height, QImage::Format_ARGB32);
QByteArray fileName = m_referenceFont.familyName().toLatin1() + '_' + QByteArray::number(textureId);
fileName = fileName.replace('/', '_').replace(' ', '_') + ".png";
image.save(QString::fromLocal8Bit(fileName));
{
GLenum error = functions->glGetError();
if (error != GL_NO_ERROR)
qWarning("glReadPixels reported error 0x%x", error);
}
functions->glDisableVertexAttribArray(0);
functions->glDisableVertexAttribArray(1);
functions->glDeleteFramebuffers(1, &fboId);
functions->glDeleteTextures(1, &tmpTexture);
delete[] data;
}
void QSGVideoMaterial_YUV::bind()
{
QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions();
QMutexLocker lock(&m_frameMutex);
if (m_frame.isValid()) {
if (m_frame.map(QAbstractVideoBuffer::ReadOnly)) {
int fw = m_frame.width();
int fh = m_frame.height();
// Frame has changed size, recreate textures...
if (m_textureSize != m_frame.size()) {
if (!m_textureSize.isEmpty())
functions->glDeleteTextures(m_planeCount, m_textureIds);
functions->glGenTextures(m_planeCount, m_textureIds);
m_textureSize = m_frame.size();
}
GLint previousAlignment;
functions->glGetIntegerv(GL_UNPACK_ALIGNMENT, &previousAlignment);
functions->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
if (m_format.pixelFormat() == QVideoFrame::Format_NV12
|| m_format.pixelFormat() == QVideoFrame::Format_NV21) {
const int y = 0;
const int uv = 1;
m_planeWidth[0] = m_planeWidth[1] = qreal(fw) / m_frame.bytesPerLine(y);
functions->glActiveTexture(GL_TEXTURE1);
bindTexture(m_textureIds[1], m_frame.bytesPerLine(uv) / 2, fh / 2, m_frame.bits(uv), GL_LUMINANCE_ALPHA);
functions->glActiveTexture(GL_TEXTURE0); // Finish with 0 as default texture unit
bindTexture(m_textureIds[0], m_frame.bytesPerLine(y), fh, m_frame.bits(y), GL_LUMINANCE);
} else { // YUV420P || YV12
const int y = 0;
const int u = m_frame.pixelFormat() == QVideoFrame::Format_YUV420P ? 1 : 2;
const int v = m_frame.pixelFormat() == QVideoFrame::Format_YUV420P ? 2 : 1;
m_planeWidth[0] = qreal(fw) / m_frame.bytesPerLine(y);
m_planeWidth[1] = m_planeWidth[2] = qreal(fw) / (2 * m_frame.bytesPerLine(u));
functions->glActiveTexture(GL_TEXTURE1);
bindTexture(m_textureIds[1], m_frame.bytesPerLine(u), fh / 2, m_frame.bits(u), GL_LUMINANCE);
functions->glActiveTexture(GL_TEXTURE2);
bindTexture(m_textureIds[2], m_frame.bytesPerLine(v), fh / 2, m_frame.bits(v), GL_LUMINANCE);
functions->glActiveTexture(GL_TEXTURE0); // Finish with 0 as default texture unit
bindTexture(m_textureIds[0], m_frame.bytesPerLine(y), fh, m_frame.bits(y), GL_LUMINANCE);
}
functions->glPixelStorei(GL_UNPACK_ALIGNMENT, previousAlignment);
m_frame.unmap();
}
m_frame = QVideoFrame();
} else {
// Go backwards to finish with GL_TEXTURE0
for (int i = m_planeCount - 1; i >= 0; --i) {
functions->glActiveTexture(GL_TEXTURE0 + i);
functions->glBindTexture(GL_TEXTURE_2D, m_textureIds[i]);
}
}
}