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kwin: fix graphical glitches for the nvidia blob

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This is a perliminary fix. Should be fixed properly once we have a real statemachine.
This commit is contained in:
Philipp Knechtges 2011-08-25 10:29:23 +02:00
parent 1b1e72b753
commit e81c68fee8
2 changed files with 16 additions and 12 deletions
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10
scene_opengl.cpp
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@ -362,13 +362,9 @@ bool SceneOpenGL::Window::bindTexture()
{
#ifndef KWIN_HAVE_OPENGLES
if (!texture.isNull()) {
if (toplevel->damage().isEmpty()) {
// texture doesn't need updating, just bind it
glBindTexture(texture.target(), texture.texture());
} else {
// bind() updates the texture automatically e.g. in case the glx pixmap binding
// is strict
texture.bind();
if (!toplevel->damage().isEmpty()) {
// mipmaps need to be updated
texture.setDirty();
toplevel->resetDamage(QRect(toplevel->clientPos(), toplevel->clientSize()));
}
return true;

18
scene_opengl_glx.cpp
View file

@ -489,12 +489,17 @@ void SceneOpenGL::flushBuffer(int mask, QRegion damage)
glXCopySubBuffer(display(), glxbuffer, r.x(), y, r.width(), r.height());
}
} else {
// if a shader is bound, copy pixels results in a black screen
// if a shader is bound or the texture unit is enabled, copy pixels results in a black screen
// therefore unbind the shader and restore after copying the pixels
GLint shader = 0;
if (ShaderManager::instance()->isShaderBound()) {
glGetIntegerv(GL_CURRENT_PROGRAM, &shader);
glUseProgram(0);
glGetIntegerv(GL_CURRENT_PROGRAM, &shader);
glUseProgram(0);
}
bool reenableTexUnit = false;
if (glIsEnabled(GL_TEXTURE_2D)) {
glDisable(GL_TEXTURE_2D);
reenableTexUnit = true;
}
// no idea why glScissor() is used, but Compiz has it and it doesn't seem to hurt
glEnable(GL_SCISSOR_TEST);
@ -517,9 +522,12 @@ void SceneOpenGL::flushBuffer(int mask, QRegion damage)
glBitmap(0, 0, 0, 0, -xpos, -ypos, NULL); // move position back to 0,0
glDrawBuffer(GL_BACK);
glDisable(GL_SCISSOR_TEST);
if (reenableTexUnit) {
glEnable(GL_TEXTURE_2D);
}
// rebind previously bound shader
if (ShaderManager::instance()->isShaderBound()) {
glUseProgram(shader);
glUseProgram(shader);
}
}
} else {
@ -562,6 +570,7 @@ void SceneOpenGL::TexturePrivate::release()
glXReleaseTexImageEXT(display(), m_glxpixmap, GLX_FRONT_LEFT_EXT);
}
glXDestroyPixmap(display(), m_glxpixmap);
m_glxpixmap = None;
}
}
@ -617,7 +626,6 @@ bool SceneOpenGL::Texture::load(const Pixmap& pix, const QSize& size,
}
d->m_size = size;
d->m_yInverted = true;
// new texture, or texture contents changed; mipmaps now invalid
setDirty();