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authorBrian Paul <brian.paul@tungstengraphics.com>2004-07-23 23:32:15 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2004-07-23 23:32:15 +0000
commitdfa5c2bfbbba1e24829582863caeafd97f124d5e (patch)
treeac5eb6f3c0f9b4b07972b4c69601539bb0852ecf /src/mesa
parenteae26ca4ba62506f6751ec6ca3e3d50709f28d81 (diff)
new MESA_GLX_DEPTH_BITS env var
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/drivers/x11/fakeglx.c31
1 files changed, 26 insertions, 5 deletions
diff --git a/src/mesa/drivers/x11/fakeglx.c b/src/mesa/drivers/x11/fakeglx.c
index c380ba27dc..2176b2dae1 100644
--- a/src/mesa/drivers/x11/fakeglx.c
+++ b/src/mesa/drivers/x11/fakeglx.c
@@ -339,6 +339,25 @@ save_glx_visual( Display *dpy, XVisualInfo *vinfo,
}
+/**
+ * Return the default number of bits for the Z buffer.
+ * If defined, use the MESA_GLX_DEPTH_BITS env var value.
+ * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
+ * XXX probably do the same thing for stencil, accum, etc.
+ */
+static GLint
+default_depth_bits(void)
+{
+ int zBits;
+ const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
+ if (zEnv)
+ zBits = _mesa_atoi(zEnv);
+ else
+ zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
+ return zBits;
+}
+
+
/*
* Create a GLX visual from a regular XVisualInfo.
@@ -352,6 +371,7 @@ static XMesaVisual
create_glx_visual( Display *dpy, XVisualInfo *visinfo )
{
int vislevel;
+ GLint zBits = default_depth_bits();
vislevel = level_of_visual( dpy, visinfo );
if (vislevel) {
@@ -376,7 +396,7 @@ create_glx_visual( Display *dpy, XVisualInfo *visinfo )
GL_FALSE, /* alpha */
GL_TRUE, /* double */
GL_FALSE, /* stereo */
- DEFAULT_SOFTWARE_DEPTH_BITS,
+ zBits,
8 * sizeof(GLstencil),
0 * sizeof(GLaccum), /* r */
0 * sizeof(GLaccum), /* g */
@@ -395,7 +415,7 @@ create_glx_visual( Display *dpy, XVisualInfo *visinfo )
GL_FALSE, /* alpha */
GL_TRUE, /* double */
GL_FALSE, /* stereo */
- DEFAULT_SOFTWARE_DEPTH_BITS,
+ zBits,
8 * sizeof(GLstencil),
8 * sizeof(GLaccum), /* r */
8 * sizeof(GLaccum), /* g */
@@ -1131,7 +1151,7 @@ static XMesaVisual choose_visual( Display *dpy, int screen, const int *list,
double_flag = GL_TRUE;
if (vis->depth > 8)
rgb_flag = GL_TRUE;
- depth_size = DEFAULT_SOFTWARE_DEPTH_BITS;
+ depth_size = default_depth_bits();
stencil_size = STENCIL_BITS;
/* XXX accum??? */
}
@@ -1182,8 +1202,9 @@ static XMesaVisual choose_visual( Display *dpy, int screen, const int *list,
depth_size = 31; /* 32 causes int overflow problems */
else if (depth_size > 16)
depth_size = 24;
- else if (depth_size > 0)
- depth_size = DEFAULT_SOFTWARE_DEPTH_BITS; /*16*/
+ else if (depth_size > 0) {
+ depth_size = default_depth_bits();
+ }
/* we only support one size of stencil and accum buffers. */
if (stencil_size > 0)