summaryrefslogtreecommitdiffstats
path: root/src/opengl/qgl.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/opengl/qgl.cpp')
-rw-r--r--src/opengl/qgl.cpp97
1 files changed, 68 insertions, 29 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index a262ded..3f32cf3 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -124,9 +124,6 @@ public:
};
Q_GLOBAL_STATIC(QGLDefaultOverlayFormat, defaultOverlayFormatInstance)
-QGLExtensions::Extensions QGLExtensions::glExtensions = 0;
-bool QGLExtensions::nvidiaFboNeedsFinish = false;
-
Q_GLOBAL_STATIC(QGLSignalProxy, theSignalProxy)
QGLSignalProxy *QGLSignalProxy::instance()
{
@@ -154,11 +151,9 @@ public:
// falling back to the GL 1 engine..
static bool mac_x1600_check_done = false;
if (!mac_x1600_check_done) {
- QGLWidget *tmp = 0;
- if (!QGLContext::currentContext()) {
- tmp = new QGLWidget();
- tmp->makeCurrent();
- }
+ QGLTemporaryContext *tmp = 0;
+ if (!QGLContext::currentContext())
+ tmp = new QGLTemporaryContext();
if (strstr((char *) glGetString(GL_RENDERER), "X1600"))
engineType = QPaintEngine::OpenGL;
if (tmp)
@@ -178,7 +173,7 @@ public:
// from an old GL 1.1 server to a GL 2.x client. In that case we can't
// use GL 2.0.
if ((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0)
- && (QGLExtensions::glExtensions & QGLExtensions::FragmentShader)
+ && (QGLExtensions::glExtensions() & QGLExtensions::FragmentShader)
&& qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty())
engineType = QPaintEngine::OpenGL2;
else
@@ -1250,7 +1245,7 @@ QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags()
static bool cachedDefault = false;
static OpenGLVersionFlags defaultVersionFlags = OpenGL_Version_None;
QGLContext *currentCtx = const_cast<QGLContext *>(QGLContext::currentContext());
- QGLWidget *dummy = 0;
+ QGLTemporaryContext *tmpContext = 0;
if (currentCtx && currentCtx->d_func()->version_flags_cached)
return currentCtx->d_func()->version_flags;
@@ -1261,8 +1256,7 @@ QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags()
} else {
if (!hasOpenGL())
return defaultVersionFlags;
- dummy = new QGLWidget;
- dummy->makeCurrent(); // glGetString() needs a current context
+ tmpContext = new QGLTemporaryContext;
cachedDefault = true;
}
}
@@ -1273,9 +1267,9 @@ QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags()
currentCtx->d_func()->version_flags_cached = true;
currentCtx->d_func()->version_flags = versionFlags;
}
- if (dummy) {
+ if (tmpContext) {
defaultVersionFlags = versionFlags;
- delete dummy;
+ delete tmpContext;
}
return versionFlags;
@@ -1493,6 +1487,8 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format)
max_texture_size = -1;
version_flags_cached = false;
version_flags = QGLFormat::OpenGL_Version_None;
+ extension_flags_cached = false;
+ extension_flags = 0;
current_fbo = 0;
default_fbo = 0;
active_engine = 0;
@@ -2147,7 +2143,7 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
int tx_h = qt_next_power_of_two(image.height());
QImage img = image;
- if (!(QGLExtensions::glExtensions & QGLExtensions::NPOTTextures)
+ if (!(QGLExtensions::glExtensions() & QGLExtensions::NPOTTextures)
&& !(QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_ES_Version_2_0)
&& (target == GL_TEXTURE_2D && (tx_w != image.width() || tx_h != image.height())))
{
@@ -2169,7 +2165,7 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
bool genMipmap = false;
#endif
if (glFormat.directRendering()
- && (QGLExtensions::glExtensions & QGLExtensions::GenerateMipmap)
+ && (QGLExtensions::glExtensions() & QGLExtensions::GenerateMipmap)
&& target == GL_TEXTURE_2D
&& (options & QGLContext::MipmapBindOption))
{
@@ -2197,9 +2193,12 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
bool premul = options & QGLContext::PremultipliedAlphaBindOption;
GLenum externalFormat;
GLuint pixel_type;
- if (QGLExtensions::glExtensions & QGLExtensions::BGRATextureFormat) {
+ if (QGLExtensions::glExtensions() & QGLExtensions::BGRATextureFormat) {
externalFormat = GL_BGRA;
- pixel_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+ if (QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_1_2)
+ pixel_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+ else
+ pixel_type = GL_UNSIGNED_BYTE;
} else {
externalFormat = GL_RGBA;
pixel_type = GL_UNSIGNED_BYTE;
@@ -2278,12 +2277,9 @@ QGLTexture* QGLContextPrivate::bindTexture(const QImage &image, GLenum target, G
qgl_byteSwapImage(img, pixel_type);
}
#ifdef QT_OPENGL_ES
- // OpenGL/ES requires that the internal and external formats be identical.
- // This is typically used to convert GL_RGBA into GL_BGRA.
- // Also, we need to use GL_UNSIGNED_BYTE when the format is GL_BGRA.
+ // OpenGL/ES requires that the internal and external formats be
+ // identical.
internalFormat = externalFormat;
- if (pixel_type == GL_UNSIGNED_INT_8_8_8_8_REV)
- pixel_type = GL_UNSIGNED_BYTE;
#endif
#ifdef QGL_BIND_TEXTURE_DEBUG
printf(" - uploading, image.format=%d, externalFormat=0x%x, internalFormat=0x%x, pixel_type=0x%x\n",
@@ -4868,9 +4864,13 @@ QGLWidget::QGLWidget(QGLContext *context, QWidget *parent,
#endif // QT3_SUPPORT
-void QGLExtensions::init_extensions()
+/*
+ Returns the GL extensions for the current context.
+*/
+QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
{
QGLExtensionMatcher extensions(reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)));
+ Extensions glExtensions;
if (extensions.match("GL_ARB_texture_rectangle"))
glExtensions |= TextureRectangle;
@@ -4931,6 +4931,46 @@ void QGLExtensions::init_extensions()
if (extensions.match("GL_EXT_bgra"))
glExtensions |= BGRATextureFormat;
+
+ return glExtensions;
+}
+
+/*
+ Returns the GL extensions for the current QGLContext. If there is no
+ current QGLContext, a default context will be created and the extensions
+ for that context will be returned instead.
+*/
+QGLExtensions::Extensions QGLExtensions::glExtensions()
+{
+ QGLTemporaryContext *tmpContext = 0;
+ static bool cachedDefault = false;
+ static Extensions defaultExtensions = 0;
+ QGLContext *currentCtx = const_cast<QGLContext *>(QGLContext::currentContext());
+
+ if (currentCtx && currentCtx->d_func()->extension_flags_cached)
+ return currentCtx->d_func()->extension_flags;
+
+ if (!currentCtx) {
+ if (cachedDefault) {
+ return defaultExtensions;
+ } else {
+ tmpContext = new QGLTemporaryContext;
+ cachedDefault = true;
+ }
+ }
+
+ Extensions extensionFlags = currentContextExtensions();
+ if (currentCtx) {
+ currentCtx->d_func()->extension_flags_cached = true;
+ currentCtx->d_func()->extension_flags = extensionFlags;
+ } else {
+ defaultExtensions = extensionFlags;
+ }
+
+ if (tmpContext)
+ delete tmpContext;
+
+ return extensionFlags;
}
/*
@@ -4942,7 +4982,6 @@ void QGLWidgetPrivate::initContext(QGLContext *context, const QGLWidget* shareWi
glDevice.setWidget(q);
- QGLExtensions::init();
glcx = 0;
autoSwap = true;
@@ -5191,7 +5230,7 @@ QSize QGLTexture::bindCompressedTexture
}
#if !defined(QT_OPENGL_ES)
if (!glCompressedTexImage2D) {
- if (!(QGLExtensions::glExtensions & QGLExtensions::TextureCompression)) {
+ if (!(QGLExtensions::glExtensions() & QGLExtensions::TextureCompression)) {
qWarning("QGLContext::bindTexture(): The GL implementation does "
"not support texture compression extensions.");
return QSize();
@@ -5230,7 +5269,7 @@ QSize QGLTexture::bindCompressedTextureDDS(const char *buf, int len)
return QSize();
// Bail out if the necessary extension is not present.
- if (!(QGLExtensions::glExtensions & QGLExtensions::DDSTextureCompression)) {
+ if (!(QGLExtensions::glExtensions() & QGLExtensions::DDSTextureCompression)) {
qWarning("QGLContext::bindTexture(): DDS texture compression is not supported.");
return QSize();
}
@@ -5340,13 +5379,13 @@ QSize QGLTexture::bindCompressedTexturePVR(const char *buf, int len)
// Bail out if the necessary extension is not present.
if (textureFormat == GL_ETC1_RGB8_OES) {
- if (!(QGLExtensions::glExtensions &
+ if (!(QGLExtensions::glExtensions() &
QGLExtensions::ETC1TextureCompression)) {
qWarning("QGLContext::bindTexture(): ETC1 texture compression is not supported.");
return QSize();
}
} else {
- if (!(QGLExtensions::glExtensions &
+ if (!(QGLExtensions::glExtensions() &
QGLExtensions::PVRTCTextureCompression)) {
qWarning("QGLContext::bindTexture(): PVRTC texture compression is not supported.");
return QSize();
generated by cgit v0.12 at 2024-11-30 08:58:45 (GMT)