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gallium/xlib: Remove drawable caching from the MakeCurrent path 

AFAICT this only exists to avoid hitting XMesaFindBuffer, which is a
linear search. But you don't have that many GLX drawables, so whatever.
This commit is contained in:
Adam Jackson 2019-09-10 14:59:06 -04:00 committed by Adam Jackson
parent 83f195414a
commit db8be355d1
1 changed files with 3 additions and 32 deletions
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35
src/gallium/state_trackers/glx/xlib/glx_api.c
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@ -1176,10 +1176,6 @@ glXCreateContext( Display *dpy, XVisualInfo *visinfo,
/* XXX these may have to be removed due to thread-safety issues. */
static GLXContext MakeCurrent_PrevContext = 0;
static GLXDrawable MakeCurrent_PrevDrawable = 0;
static GLXDrawable MakeCurrent_PrevReadable = 0;
static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
/* GLX 1.3 and later */
@ -1200,11 +1196,7 @@ glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
XMesaContext xmctx = glxCtx->xmesaContext;
/* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
if (ctx == MakeCurrent_PrevContext
&& draw == MakeCurrent_PrevDrawable) {
drawBuffer = MakeCurrent_PrevDrawBuffer;
}
else {
if (ctx == MakeCurrent_PrevContext) {
drawBuffer = XMesaFindBuffer( dpy, draw );
}
if (!drawBuffer) {
@ -1217,11 +1209,7 @@ glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
}
/* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
if (ctx == MakeCurrent_PrevContext
&& read == MakeCurrent_PrevReadable) {
readBuffer = MakeCurrent_PrevReadBuffer;
}
else {
if (ctx == MakeCurrent_PrevContext) {
readBuffer = XMesaFindBuffer( dpy, read );
}
if (!readBuffer) {
@ -1233,19 +1221,10 @@ glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
}
}
if (no_rast &&
MakeCurrent_PrevContext == ctx &&
MakeCurrent_PrevDrawable == draw &&
MakeCurrent_PrevReadable == read &&
MakeCurrent_PrevDrawBuffer == drawBuffer &&
MakeCurrent_PrevReadBuffer == readBuffer)
if (no_rast && MakeCurrent_PrevContext == ctx)
return True;
MakeCurrent_PrevContext = ctx;
MakeCurrent_PrevDrawable = draw;
MakeCurrent_PrevReadable = read;
MakeCurrent_PrevDrawBuffer = drawBuffer;
MakeCurrent_PrevReadBuffer = readBuffer;
/* Now make current! */
if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
@ -1263,10 +1242,6 @@ glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
/* release current context w/out assigning new one. */
XMesaMakeCurrent2( NULL, NULL, NULL );
MakeCurrent_PrevContext = 0;
MakeCurrent_PrevDrawable = 0;
MakeCurrent_PrevReadable = 0;
MakeCurrent_PrevDrawBuffer = 0;
MakeCurrent_PrevReadBuffer = 0;
SetCurrentContext(NULL);
return True;
}
@ -1430,10 +1405,6 @@ glXDestroyContext( Display *dpy, GLXContext ctx )
GLXContext glxCtx = ctx;
(void) dpy;
MakeCurrent_PrevContext = 0;
MakeCurrent_PrevDrawable = 0;
MakeCurrent_PrevReadable = 0;
MakeCurrent_PrevDrawBuffer = 0;
MakeCurrent_PrevReadBuffer = 0;
XMesaDestroyContext( glxCtx->xmesaContext );
XMesaGarbageCollect();
free(glxCtx);