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kwin/glx: Add support for GLX_ARB_create_context_robustness

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Request a context with robust buffer access behavior, and set the reset
notification strategy to GLX_LOSE_CONTEXT_ON_RESET_ARB.
This commit is contained in:
Fredrik Höglund 2013-05-19 16:28:48 +02:00
parent f2dd6d02b1
commit 7f0d0436e9
1 changed files with 26 additions and 2 deletions
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28
glxbackend.cpp
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@ -147,6 +147,14 @@ bool GlxBackend::initRenderingContext()
// Use glXCreateContextAttribsARB() when it's available
if (glXCreateContextAttribsARB) {
const int attribs_31_core_robustness[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 1,
GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB | GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB,
GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, GLX_LOSE_CONTEXT_ON_RESET_ARB,
0
};
const int attribs_31_core[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 1,
@ -154,13 +162,29 @@ bool GlxBackend::initRenderingContext()
0
};
const int attribs_legacy_robustness[] = {
GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB,
GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, GLX_LOSE_CONTEXT_ON_RESET_ARB,
0
};
const int attribs_legacy[] = {
0
};
const bool have_robustness = hasGLExtension("GLX_ARB_create_context_robustness");
// Try to create a 3.1 context first
if (options->glCoreProfile())
ctx = glXCreateContextAttribsARB(display(), fbconfig, 0, direct, attribs_31_core);
if (options->glCoreProfile()) {
if (have_robustness)
ctx = glXCreateContextAttribsARB(display(), fbconfig, 0, direct, attribs_31_core_robustness);
if (!ctx)
ctx = glXCreateContextAttribsARB(display(), fbconfig, 0, direct, attribs_31_core);
}
if (!ctx && have_robustness)
ctx = glXCreateContextAttribsARB(display(), fbconfig, 0, direct, attribs_legacy_robustness);
if (!ctx)
ctx = glXCreateContextAttribsARB(display(), fbconfig, 0, direct, attribs_legacy);