- if (rgba) {
- Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
- /* 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 && !hp_cr_maps) {
- /* 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 && !hp_cr_maps) {
- /* 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;
- }
- if (min_depth==0) {
- /* start with shallowest */
- for (depth=0;depth<=32;depth++) {
- vis = get_visual( dpy, screen, depth, visclass );
- if (vis) {
- return vis;
- }
- }
- }
- else {
- /* start with deepest */
- for (depth=32;depth>=min_depth;depth--) {
- vis = get_visual( dpy, screen, depth, visclass );
- if (vis) {
- return vis;
- }
- }
- }
+ /* 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<4;xclass++) {
+ switch (xclass) {
+ case 0: visclass = TrueColor; break;
+ case 1: visclass = DirectColor; break;
+ case 2: visclass = GrayScale; break;
+ case 3: visclass = StaticGray; break;
+ }
+ if (min_depth==0) {
+ /* start with shallowest */
+ for (depth=0;depth<=32;depth++) {
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ else {
+ /* start with deepest */
+ for (depth=32;depth>=min_depth;depth--) {
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }