DOS and glide driver updates from Daniel Borca

5 files changed, 119 insertions, 63 deletions

diff --git a/src/glut/dos/Makefile.DJ b/src/glut/dos/Makefile.DJ
index c870d23d44..4586a0ba69 100644
--- a/src/glut/dos/Makefile.DJ
+++ b/src/glut/dos/Makefile.DJ
@@ -23,7 +23,7 @@
 # DOS/DJGPP glut makefile v1.4 for Mesa
 #
 #  Copyright (C) 2002 - Borca Daniel
-#  Email : dborca@yahoo.com
+#  Email : dborca@users.sourceforge.net
 #  Web   : http://www.geocities.com/dborca
 
 
@@ -53,10 +53,11 @@ GLUT_LIB = libglut.a
 GLUT_DXE = glut.dxe
 GLUT_IMP = libiglut.a
 
-export LD_LIBRARY_PATH := $(LD_LIBRARY_PATH);$(LIBDIR)
+export LD_LIBRARY_PATH := $(LD_LIBRARY_PATH);$(LIBDIR);$(GLIDE)/lib
 
 CC = gcc
 CFLAGS += -I- -I$(TOP)/include -I. -I$(MKGLUT) -IPC_HW
+CFLAGS += -DGLUT_IMPORT_LIB
 
 AR = ar
 ARFLAGS = rus
@@ -78,6 +79,7 @@ CORE_SOURCES = \
 	mouse.c \
 	overlay.c \
 	state.c \
+	util.c \
 	window.c
 
 PC_HW_SOURCES = \
@@ -119,13 +121,13 @@ OBJECTS = $(addsuffix .o,$(basename $(SOURCES)))
 all: $(LIBDIR)/$(GLUT_LIB) $(LIBDIR)/$(GLUT_DXE) $(LIBDIR)/$(GLUT_IMP)
 
 $(LIBDIR)/$(GLUT_LIB): $(OBJECTS)
-	$(AR) $(ARFLAGS) $(LIBDIR)/$(GLUT_LIB) $(OBJECTS)
+	$(AR) $(ARFLAGS) $@ $^
 
 $(LIBDIR)/$(GLUT_DXE) $(LIBDIR)/$(GLUT_IMP): $(OBJECTS)
 ifeq ($(HAVEDXE3),)
 	$(warning Missing DXE3 package... Skipping $(GLUT_DXE))
 else
-	-dxe3gen -o $(LIBDIR)/$(GLUT_DXE) -Y $(LIBDIR)/$(GLUT_IMP) -D "MesaGLUT DJGPP" -E _glut -P gl.dxe -P glu.dxe -U $(OBJECTS)
+	-dxe3gen -o $(LIBDIR)/$(GLUT_DXE) -Y $(LIBDIR)/$(GLUT_IMP) -D "MesaGLUT DJGPP" -E _glut -P gl.dxe -P glu.dxe -U $^
 endif
 
 clean:
diff --git a/src/glut/dos/glutint.h b/src/glut/dos/glutint.h
index e8dffb581b..013b307e94 100644
--- a/src/glut/dos/glutint.h
+++ b/src/glut/dos/glutint.h
@@ -19,10 +19,10 @@
  */
 
 /*
- * DOS/DJGPP glut driver v1.3 for Mesa
+ * DOS/DJGPP glut driver v1.4 for Mesa
  *
  *  Copyright (C) 2002 - Borca Daniel
- *  Email : dborca@yahoo.com
+ *  Email : dborca@users.sourceforge.net
  *  Web   : http://www.geocities.com/dborca
  */
 
@@ -64,9 +64,11 @@ typedef void (GLUTCALLBACK *GLUTjoystickCB) (unsigned int, int, int, int);
 typedef struct GLUTwindow {
         int num;                         /* window id */
 
+        DMesaContext context;
         DMesaBuffer buffer;
 
         int show_mouse;
+        GLboolean redisplay;
 
         /* GLUT settable or visible window state. */
         int xpos;
@@ -100,9 +102,10 @@ typedef struct GLUTwindow {
 extern GLUTidleCB g_idle_func;
 extern GLUTmenuStatusCB g_menu_status_func;
 
-extern GLboolean g_redisplay;
-
 extern GLuint g_bpp;                  /* HW: bits per pixel */
+extern GLuint g_depth;                /* HW: depth bits */
+extern GLuint g_stencil;              /* HW: stencil bits */
+extern GLuint g_accum;                /* HW: accum bits */
 extern GLuint g_refresh;              /* HW: vertical refresh rate */
 extern GLuint g_screen_w, g_screen_h; /* HW: physical screen size */
 extern GLint g_driver_caps;
@@ -117,6 +120,7 @@ extern int g_mouse;                   /* non-zero if mouse installed */
 extern int g_mouse_x, g_mouse_y;      /* mouse coords, relative to current win */
 
 extern GLUTwindow *g_curwin;          /* current window */
+extern GLUTwindow *g_windows[];
 
 extern char *__glutProgramName;       /* program name */
 
@@ -127,6 +131,10 @@ extern char * __glutStrdup(const char *string);
 extern void __glutWarning(char *format,...);
 extern void __glutFatalError(char *format,...);
 extern void __glutFatalUsage(char *format,...);
+/* Private routines from util.c */
+#ifdef GLUT_IMPORT_LIB
+extern void *__glutFont(void *font);
+#endif
 
 
 
@@ -137,14 +145,6 @@ extern void __glutFatalUsage(char *format,...);
 
 #define MAX_WINDOWS 2
 
-#define DEFAULT_WIDTH  300
-#define DEFAULT_HEIGHT 300
-#define DEFAULT_BPP    16
-
-#define DEPTH_SIZE   16
-#define STENCIL_SIZE 8
-#define ACCUM_SIZE   16
-
 #define RESERVED_COLORS 0
 
 #endif /* __glutint_h__ */
diff --git a/src/glut/dos/init.c b/src/glut/dos/init.c
index 5d09561dac..22bab9f8af 100644
--- a/src/glut/dos/init.c
+++ b/src/glut/dos/init.c
@@ -19,10 +19,10 @@
  */
 
 /*
- * DOS/DJGPP glut driver v1.3 for Mesa
+ * DOS/DJGPP glut driver v1.4 for Mesa
  *
  *  Copyright (C) 2002 - Borca Daniel
- *  Email : dborca@yahoo.com
+ *  Email : dborca@users.sourceforge.net
  *  Web   : http://www.geocities.com/dborca
  */
 
@@ -31,11 +31,20 @@
 
 #include "glutint.h"
 
+#define DEFAULT_WIDTH  300
+#define DEFAULT_HEIGHT 300
+#define DEFAULT_BPP    16
+
+#define DEPTH_SIZE   16
+#define STENCIL_SIZE 8
+#define ACCUM_SIZE   16
 
 
-GLboolean g_redisplay = GL_FALSE;
 
 GLuint g_bpp = DEFAULT_BPP;
+GLuint g_depth = DEPTH_SIZE;
+GLuint g_stencil = STENCIL_SIZE;
+GLuint g_accum = ACCUM_SIZE;
 GLuint g_refresh = 0;
 GLuint g_screen_w, g_screen_h;
 GLint g_driver_caps;
@@ -58,6 +67,15 @@ void APIENTRY glutInit (int *argc, char **argv)
  if ((env = getenv("DMESA_GLUT_BPP")) != NULL) {
     g_bpp = atoi(env);
  }
+ if ((env = getenv("DMESA_GLUT_DEPTH")) != NULL) {
+    g_depth = atoi(env);
+ }
+ if ((env = getenv("DMESA_GLUT_STENCIL")) != NULL) {
+    g_stencil = atoi(env);
+ }
+ if ((env = getenv("DMESA_GLUT_ACCUM")) != NULL) {
+    g_accum = atoi(env);
+ }
  if ((env = getenv("DMESA_GLUT_REFRESH")) != NULL) {
     g_refresh = atoi(env);
  }
@@ -109,6 +127,7 @@ void APIENTRY glutInitWindowSize (int width, int height)
 
 void APIENTRY glutMainLoop (void)
 {
+ int i;
  GLboolean idle;
  static int old_mouse_x = 0;
  static int old_mouse_y = 0;
@@ -125,29 +144,43 @@ void APIENTRY glutMainLoop (void)
  pc_install_keyb();
  __glutInitMouse();
 
- glutPostRedisplay();
- if (g_curwin->reshape) {
-    g_curwin->reshape(g_curwin->width, g_curwin->height);
- }
- if (g_curwin->visibility) {
-    g_curwin->visibility(GLUT_VISIBLE);
+ for (i = 0; i < MAX_WINDOWS; i++) {
+     if (g_windows[i] != NULL) {
+        GLUTwindow *w = g_windows[i];
+        glutSetWindow(w->num);
+        glutPostRedisplay();
+        if (w->reshape) {
+           w->reshape(w->width, w->height);
+        }
+        if (w->visibility) {
+           w->visibility(GLUT_VISIBLE);
+        }
+     }
  }
 
  while (GL_TRUE) {
        idle = GL_TRUE;
 
-       if (g_redisplay && g_curwin->display) {
-          idle        = GL_FALSE;
-          g_redisplay = GL_FALSE;
-
-          if (g_curwin->show_mouse && !(g_display_mode & GLUT_DOUBLE)) {
-             /* XXX scare mouse */
-             g_curwin->display();
-             /* XXX unscare mouse */
-          } else {
-             g_curwin->display();
-          }
+       for (i = 0; i < MAX_WINDOWS; i++) {
+           if (g_windows[i] != NULL) {
+              GLUTwindow *w = g_windows[i];
+              if (w->redisplay && w->display) {
+                 idle         = GL_FALSE;
+                 w->redisplay = GL_FALSE;
+
+                 if (DMesaMakeCurrent(w->context, w->buffer)) {
+                    if (w->show_mouse && !(g_display_mode & GLUT_DOUBLE)) {
+                       /* XXX scare mouse */
+                       w->display();
+                       /* XXX unscare mouse */
+                    } else {
+                       w->display();
+                    }
+                 }
+              }
+           }
        }
+       DMesaMakeCurrent(g_curwin->context, g_curwin->buffer);
 
        if (g_mouse) {
           int mouse_x;
diff --git a/src/glut/dos/state.c b/src/glut/dos/state.c
index 245d2ef621..e9d854cd4e 100644
--- a/src/glut/dos/state.c
+++ b/src/glut/dos/state.c
@@ -19,7 +19,7 @@
  */
 
 /*
- * DOS/DJGPP glut driver v1.3 for Mesa
+ * DOS/DJGPP glut driver v1.4 for Mesa
  *
  *  Copyright (C) 2002 - Borca Daniel
  *  Email : dborca@yahoo.com
@@ -60,9 +60,9 @@ int APIENTRY glutGet (GLenum type)
         case GLUT_WINDOW_HEIGHT:
              return g_curwin->height;
         case GLUT_WINDOW_STENCIL_SIZE:
-             return STENCIL_SIZE;
+             return g_stencil;
         case GLUT_WINDOW_DEPTH_SIZE:
-             return DEPTH_SIZE;
+             return g_depth;
         case GLUT_WINDOW_RGBA:
              return !(g_display_mode & GLUT_INDEX);
         case GLUT_WINDOW_COLORMAP_SIZE:
diff --git a/src/glut/dos/window.c b/src/glut/dos/window.c
index cfc2f965c0..06e8ea9ead 100644
--- a/src/glut/dos/window.c
+++ b/src/glut/dos/window.c
@@ -19,10 +19,10 @@
  */
 
 /*
- * DOS/DJGPP glut driver v1.3 for Mesa
+ * DOS/DJGPP glut driver v1.4 for Mesa
  *
  *  Copyright (C) 2002 - Borca Daniel
- *  Email : dborca@yahoo.com
+ *  Email : dborca@users.sourceforge.net
  *  Web   : http://www.geocities.com/dborca
  */
 
@@ -38,8 +38,7 @@ GLUTwindow *g_curwin;
 static GLuint swaptime, swapcount;
 
 static DMesaVisual  visual  = NULL;
-static DMesaContext context = NULL;
-static GLUTwindow *windows[MAX_WINDOWS];
+GLUTwindow *g_windows[MAX_WINDOWS];
 
 
 
@@ -50,7 +49,6 @@ static void clean (void)
  for (i=1; i<=MAX_WINDOWS; i++) {
      glutDestroyWindow(i);
  }
- if (context) DMesaDestroyContext(context);
  if (visual)  DMesaDestroyVisual(visual);
 
  pc_close_stdout();
@@ -64,53 +62,72 @@ int APIENTRY glutCreateWindow (const char *title)
  int i;
  int m8width = (g_init_w + 7) & ~7;
 
+ /* We set the Visual once. This will be our desktop (graphic mode).
+  * We should do this in the `glutInit' code, but we don't have any idea
+  * about its geometry. Supposedly, when we are about to create one
+  * window, we have a slight idea about resolution.
+  */
  if (!visual) {
     if ((visual=DMesaCreateVisual(g_init_x + m8width, g_init_y + g_init_h, g_bpp, g_refresh,
                                   g_display_mode & GLUT_DOUBLE,
                                   !(g_display_mode & GLUT_INDEX),
                                   g_display_mode & GLUT_ALPHA,
-                                  g_display_mode & GLUT_DEPTH  ?DEPTH_SIZE  :0,
-                                  g_display_mode & GLUT_STENCIL?STENCIL_SIZE:0,
-                                  g_display_mode & GLUT_ACCUM  ?ACCUM_SIZE  :0))==NULL) {
-       return 0;
-    }
-
-    if ((context=DMesaCreateContext(visual, NULL))==NULL) {
-       DMesaDestroyVisual(visual);
+                                  g_display_mode & GLUT_DEPTH   ? g_depth  :0,
+                                  g_display_mode & GLUT_STENCIL ? g_stencil:0,
+                                  g_display_mode & GLUT_ACCUM   ? g_accum  :0))==NULL) {
        return 0;
     }
 
+    /* Also hook stdio/stderr once */
     pc_open_stdout();
     pc_open_stderr();
     pc_atexit(clean);
  }
 
+ /* Search for an empty slot.
+  * Each window has its own rendering Context and its own Buffer.
+  */
  for (i=0; i<MAX_WINDOWS; i++) {
-     if (windows[i] == NULL) {
+     if (g_windows[i] == NULL) {
+        DMesaContext c;
         DMesaBuffer b;
         GLUTwindow *w;
 
-        if ((w=(GLUTwindow *)calloc(1, sizeof(GLUTwindow))) == NULL) {
+        if ((w = (GLUTwindow *)calloc(1, sizeof(GLUTwindow))) == NULL) {
+           return 0;
+        }
+
+        /* Allocate the rendering Context. */
+        if ((c = DMesaCreateContext(visual, NULL)) == NULL) {
+           free(w);
            return 0;
         }
 
-        if ((b=DMesaCreateBuffer(visual, g_init_x, g_init_y, m8width, g_init_h))==NULL) {
+        /* Allocate the Buffer (displayable area).
+         * We have to specify buffer size and position (inside the desktop).
+         */
+        if ((b = DMesaCreateBuffer(visual, g_init_x, g_init_y, m8width, g_init_h)) == NULL) {
+           DMesaDestroyContext(c);
            free(w);
            return 0;
         }
-        if (!DMesaMakeCurrent(context, b)) {
+
+        /* Bind Buffer to Context and make the Context the current one. */
+        if (!DMesaMakeCurrent(c, b)) {
            DMesaDestroyBuffer(b);
+           DMesaDestroyContext(c);
            free(w);
            return 0;
         }
 
-        g_curwin = windows[i] = w;
+        g_curwin = g_windows[i] = w;
 
         w->num = ++i;
         w->xpos = g_init_x;
         w->ypos = g_init_y;
         w->width = m8width;
         w->height = g_init_h;
+        w->context = c;
         w->buffer = b;
 
         return i;
@@ -131,10 +148,13 @@ int APIENTRY glutCreateSubWindow (int win, int x, int y, int width, int height)
 
 void APIENTRY glutDestroyWindow (int win)
 {
- if (windows[--win]) {
-    DMesaDestroyBuffer(windows[win]->buffer);
-    free(windows[win]);
-    windows[win] = NULL;
+ if (g_windows[--win]) {
+    GLUTwindow *w = g_windows[win];
+    DMesaMakeCurrent(NULL, NULL);
+    DMesaDestroyBuffer(w->buffer);
+    DMesaDestroyContext(w->context);
+    free(w);
+    g_windows[win] = NULL;
  }
 }
 
@@ -142,7 +162,7 @@ void APIENTRY glutDestroyWindow (int win)
 
 void APIENTRY glutPostRedisplay (void)
 {
- g_redisplay = GL_TRUE;
+ g_curwin->redisplay = GL_TRUE;
 }
 
 
@@ -183,7 +203,8 @@ int APIENTRY glutGetWindow (void)
 
 void APIENTRY glutSetWindow (int win)
 {
- g_curwin = windows[win - 1];
+ g_curwin = g_windows[win - 1];
+ DMesaMakeCurrent(g_curwin->context, g_curwin->buffer);
 }