GLboolean alphaFlag = default_alpha_bits() > 0;
if (is_usable_visual( visinfo )) {
- if (_mesa_getenv("MESA_GLX_FORCE_CI")) {
- /* Configure this visual as a COLOR INDEX visual. */
- return save_glx_visual( dpy, visinfo,
- GL_FALSE, /* rgb */
- GL_FALSE, /* alpha */
- GL_TRUE, /* double */
- GL_FALSE, /* stereo */
- zBits,
- STENCIL_BITS,
- 0, 0, 0, 0, /* accum bits */
- 0, /* level */
- 0 /* numAux */
- );
- }
- else {
- /* Configure this visual as RGB, double-buffered, depth-buffered. */
- /* This is surely wrong for some people's needs but what else */
- /* can be done? They should use glXChooseVisual(). */
- return save_glx_visual( dpy, visinfo,
- GL_TRUE, /* rgb */
- alphaFlag, /* alpha */
- GL_TRUE, /* double */
- GL_FALSE, /* stereo */
- zBits,
- STENCIL_BITS,
- accBits, /* r */
- accBits, /* g */
- accBits, /* b */
- accBits, /* a */
- 0, /* level */
- 0 /* numAux */
- );
- }
+ /* Configure this visual as RGB, double-buffered, depth-buffered. */
+ /* This is surely wrong for some people's needs but what else */
+ /* can be done? They should use glXChooseVisual(). */
+ return save_glx_visual( dpy, visinfo,
+ GL_TRUE, /* rgb */
+ alphaFlag, /* alpha */
+ GL_TRUE, /* double */
+ GL_FALSE, /* stereo */
+ zBits,
+ STENCIL_BITS,
+ accBits, /* r */
+ accBits, /* g */
+ accBits, /* b */
+ accBits, /* a */
+ 0, /* level */
+ 0 /* numAux */
+ );
}
else {
_mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
return NULL;
}
}
-
+
return vis;
}
/*
- * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
- * Input: dpy, screen - X display and screen number
- * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode
+ * Select an X visual which satisfies the RGBA flag and minimum depth.
+ * Input: dpy,
+ * screen - X display and screen number
* min_depth - minimum visual depth
* preferred_class - preferred GLX visual class or DONT_CARE
* Return: pointer to an XVisualInfo or NULL.
*/
static XVisualInfo *
-choose_x_visual( Display *dpy, int screen, GLboolean rgba, int min_depth,
+choose_x_visual( Display *dpy, int screen, int min_depth,
int preferred_class )
{
XVisualInfo *vis;
int xclass, visclass = 0;
int depth;
- if (rgba) {
- /* First see if the MESA_RGB_VISUAL env var is defined */
- vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
- if (vis) {
- return vis;
- }
- /* Otherwise, search for a suitable visual */
- if (preferred_class==DONT_CARE) {
- for (xclass=0;xclass<6;xclass++) {
- switch (xclass) {
- case 0: visclass = TrueColor; break;
- case 1: visclass = DirectColor; break;
- case 2: visclass = PseudoColor; break;
- case 3: visclass = StaticColor; break;
- case 4: visclass = GrayScale; break;
- case 5: visclass = StaticGray; break;
- }
- if (min_depth==0) {
- /* start with shallowest */
- for (depth=0;depth<=32;depth++) {
- if (visclass==TrueColor && depth==8) {
- /* Special case: try to get 8-bit PseudoColor before */
- /* 8-bit TrueColor */
- vis = get_visual( dpy, screen, 8, PseudoColor );
- if (vis) {
- return vis;
- }
- }
- vis = get_visual( dpy, screen, depth, visclass );
- if (vis) {
- return vis;
- }
- }
- }
- else {
- /* start with deepest */
- for (depth=32;depth>=min_depth;depth--) {
- if (visclass==TrueColor && depth==8) {
- /* Special case: try to get 8-bit PseudoColor before */
- /* 8-bit TrueColor */
- vis = get_visual( dpy, screen, 8, PseudoColor );
- if (vis) {
- return vis;
- }
- }
- vis = get_visual( dpy, screen, depth, visclass );
- if (vis) {
- return vis;
- }
- }
- }
- }
- }
- else {
- /* search for a specific visual class */
- switch (preferred_class) {
- case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
- case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
- case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
- case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
- case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
- case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
- default: return NULL;
+ /* First see if the MESA_RGB_VISUAL env var is defined */
+ vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
+ if (vis) {
+ return vis;
+ }
+ /* Otherwise, search for a suitable visual */
+ if (preferred_class==DONT_CARE) {
+ for (xclass=0;xclass<6;xclass++) {
+ switch (xclass) {
+ case 0: visclass = TrueColor; break;
+ case 1: visclass = DirectColor; break;
+ case 2: visclass = PseudoColor; break;
+ case 3: visclass = StaticColor; break;
+ case 4: visclass = GrayScale; break;
+ case 5: visclass = StaticGray; break;
}
if (min_depth==0) {
/* start with shallowest */
for (depth=0;depth<=32;depth++) {
+ if (visclass==TrueColor && depth==8) {
+ /* Special case: try to get 8-bit PseudoColor before */
+ /* 8-bit TrueColor */
+ vis = get_visual( dpy, screen, 8, PseudoColor );
+ if (vis) {
+ return vis;
+ }
+ }
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
else {
/* start with deepest */
for (depth=32;depth>=min_depth;depth--) {
+ if (visclass==TrueColor && depth==8) {
+ /* Special case: try to get 8-bit PseudoColor before */
+ /* 8-bit TrueColor */
+ vis = get_visual( dpy, screen, 8, PseudoColor );
+ if (vis) {
+ return vis;
+ }
+ }
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
else {
- /* First see if the MESA_CI_VISUAL env var is defined */
- vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" );
- if (vis) {
- return vis;
- }
- /* Otherwise, search for a suitable visual, starting with shallowest */
- if (preferred_class==DONT_CARE) {
- for (xclass=0;xclass<4;xclass++) {
- switch (xclass) {
- case 0: visclass = PseudoColor; break;
- case 1: visclass = StaticColor; break;
- case 2: visclass = GrayScale; break;
- case 3: visclass = StaticGray; break;
- }
- /* try 8-bit up through 16-bit */
- for (depth=8;depth<=16;depth++) {
- vis = get_visual( dpy, screen, depth, visclass );
- if (vis) {
- return vis;
- }
- }
- /* try min_depth up to 8-bit */
- for (depth=min_depth;depth<8;depth++) {
- vis = get_visual( dpy, screen, depth, visclass );
- if (vis) {
- return vis;
- }
- }
- }
+ /* search for a specific visual class */
+ switch (preferred_class) {
+ case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
+ case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
+ case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
+ case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
+ case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
+ case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
+ default: return NULL;
}
- else {
- /* search for a specific visual class */
- switch (preferred_class) {
- case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
- case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
- case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
- case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
- case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
- case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
- default: return NULL;
- }
- /* try 8-bit up through 16-bit */
- for (depth=8;depth<=16;depth++) {
+ if (min_depth==0) {
+ /* start with shallowest */
+ for (depth=0;depth<=32;depth++) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
}
}
- /* try min_depth up to 8-bit */
- for (depth=min_depth;depth<8;depth++) {
+ }
+ else {
+ /* start with deepest */
+ for (depth=32;depth>=min_depth;depth--) {
vis = get_visual( dpy, screen, depth, visclass );
if (vis) {
return vis;
(void) caveat;
+
/*
* Since we're only simulating the GLX extension this function will never
* find any real GL visuals. Instead, all we can do is try to find an RGB
if (vis) {
/* give the visual some useful GLX attributes */
double_flag = GL_TRUE;
- if (vis->depth > 8)
- rgb_flag = GL_TRUE;
+ rgb_flag = GL_TRUE;
depth_size = default_depth_bits();
stencil_size = STENCIL_BITS;
/* XXX accum??? */
}
else if (level==0) {
/* normal color planes */
- if (rgb_flag) {
- /* Get an RGB visual */
- int min_rgb = min_red + min_green + min_blue;
- if (min_rgb>1 && min_rgb<8) {
- /* a special case to be sure we can get a monochrome visual */
- min_rgb = 1;
- }
- vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type );
- }
- else {
- /* Get a color index visual */
- vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type );
- accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0;
+ /* Get an RGB visual */
+ int min_rgb = min_red + min_green + min_blue;
+ if (min_rgb>1 && min_rgb<8) {
+ /* a special case to be sure we can get a monochrome visual */
+ min_rgb = 1;
}
+ vis = choose_x_visual( dpy, screen, min_rgb, visual_type );
}
else {
+ _mesa_warning(NULL, "overlay not supported");
+ return NULL;
}
if (vis) {
/* we only support one size of stencil and accum buffers. */
if (stencil_size > 0)
stencil_size = STENCIL_BITS;
- if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
+
+ if (accumRedSize > 0 ||
+ accumGreenSize > 0 ||
+ accumBlueSize > 0 ||
accumAlphaSize > 0) {
+
accumRedSize =
- accumGreenSize =
- accumBlueSize = default_accum_bits();
+ accumGreenSize =
+ accumBlueSize = default_accum_bits();
+
accumAlphaSize = alpha_flag ? accumRedSize : 0;
}
xmvis = choose_visual(dpy, screen, list, GL_FALSE);
if (xmvis) {
-#if 0
- return xmvis->vishandle;
-#else
/* create a new vishandle - the cached one may be stale */
xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
if (xmvis->vishandle) {
_mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
}
return xmvis->vishandle;
-#endif
}
else
return NULL;
projects / mesa.git / commitdiff