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new MESA_GLX_DEPTH_BITS env var

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This commit is contained in:
Brian Paul
2004-07-23 23:32:15 +00:00
parent eae26ca4ba
commit dfa5c2bfbb
3 changed files with 28 additions and 6 deletions
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src/mesa/drivers/x11/fakeglx.c
+26 -5
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@@ -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)