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better handling of GLX_DEPTH_SIZE in glXChooseVisual()

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Brian Paul
2000-10-05 17:38:21 +00:00
parent fa849a0e16
commit 2c7e6334ec
1 changed files with 7 additions and 6 deletions
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13
src/mesa/drivers/x11/fakeglx.c
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@@ -1,4 +1,4 @@
/* $Id: fakeglx.c,v 1.37 2000/09/26 21:28:39 brianp Exp $ */ /* $Id: fakeglx.c,v 1.38 2000/10/05 17:38:21 brianp Exp $ */
/* /*
* Mesa 3-D graphics library * Mesa 3-D graphics library
@@ -1050,15 +1050,16 @@ Fake_glXChooseVisual( Display *dpy, int screen, int *list )
if (vis) { if (vis) {
/* Note: we're not exactly obeying the glXChooseVisual rules here. /* Note: we're not exactly obeying the glXChooseVisual rules here.
* When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
* largest depth buffer size, which is 32bits/value. However, we * largest depth buffer size, which is 32bits/value. Instead, we
* return 16 to maintain performance with earlier versions of Mesa. * return 16 to maintain performance with earlier versions of Mesa.
*/ */
if (depth_size == 1) if (depth_size > 24)
depth_size = DEFAULT_SOFTWARE_DEPTH_BITS; depth_size = 31; /* 32 causes int overflow problems */
else if (depth_size > 24)
depth_size = 31;
else if (depth_size > 16) else if (depth_size > 16)
depth_size = 24; depth_size = 24;
else if (depth_size > 0)
depth_size = DEFAULT_SOFTWARE_DEPTH_BITS; /*16*/
/* we only support one size of stencil and accum buffers. */ /* we only support one size of stencil and accum buffers. */
if (stencil_size > 0) if (stencil_size > 0)
stencil_size = STENCIL_BITS; stencil_size = STENCIL_BITS;