From 9fb38f56959cd8a6d64c8e9ff0d034b1aefb5215 Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Tue, 21 Sep 2004 08:40:25 +0000
Subject: One more attempt towards a truly working GL initialization code.

---
 generic/tkZinc.c | 133 ++++++++++++++++++++++++++++---------------------------
 1 file changed, 67 insertions(+), 66 deletions(-)

(limited to 'generic')

diff --git a/generic/tkZinc.c b/generic/tkZinc.c
index 6465a31..21221d0 100644
--- a/generic/tkZinc.c
+++ b/generic/tkZinc.c
@@ -992,72 +992,7 @@ InitRendering1(ZnWInfo	*wi)
   ZnGLContext		gl_context;
 
   if (wi->render) {
-#  ifdef _WIN32
-    /*
-     * Look for a matching context already available.
-     */
-    ce = ZnGetGLContext(wi->dpy);
-    if (ce) {
-      gl_context = ce->context;
-      ce->hwnd = Tk_GetHWND(Tk_WindowId(wi->win));
-      ce->hdc = GetDC(ce->hwnd);
-      ZnListAdd(ce->widgets, &wi, ZnListTail);
-      SetPixelFormat(ce->hdc, ce->ipixel, &ce->pfd);
-    }
-    else {
-      ce = ZnMalloc(sizeof(ZnGLContextEntry));
-      ce->hwnd = Tk_GetHWND(Tk_WindowId(wi->win));
-      ce->hdc = GetDC(ce->hwnd);
-      ce->widgets = ZnListNew(1, sizeof(ZnWInfo *));
-      ZnListAdd(ce->widgets, &wi, ZnListTail);
-
-      memset(&ce->pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
-      ce->pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
-      ce->pfd.nVersion = 1;
-      ce->pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
-      ce->pfd.iPixelType = PFD_TYPE_RGBA;
-      ce->pfd.cRedBits = 8;
-      ce->pfd.cGreenBits = 8;
-      ce->pfd.cBlueBits = 8;
-      ce->pfd.cAlphaBits = 8;
-      ce->pfd.cStencilBits = 8;
-      ce->pfd.iLayerType = PFD_MAIN_PLANE;
-      ce->ipixel = ChoosePixelFormat(ce->hdc, &ce->pfd);
-      /*printf("ipixel=%d dwFlags=0x%x req=0x%x iPixelType=%d hdc=%d\n",
-	ce->ipixel,	ce->pfd.dwFlags,
-	PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER,	      
-	ce->pfd.iPixelType==PFD_TYPE_RGBA,
-	ce->hdc);*/
-      if (!ce->ipixel ||
-	  (ce->pfd.cRedBits != 8) || (ce->pfd.cGreenBits != 8) || (ce->pfd.cBlueBits != 8) ||
-	  (ce->pfd.cStencilBits != 8)) {
-	fprintf(stderr, "ChoosePixelFormat failed\n");
-      }
-      
-      if (SetPixelFormat(ce->hdc, ce->ipixel, &ce->pfd) == TRUE) {
-	gl_context = wglCreateContext(ce->hdc);
-	if (gl_context) {
-	  ce->context = gl_context;
-	  ce->dpy = wi->dpy;
-	  ce->max_tex_size = 64; /* Minimum value is always valid */
-	  ce->max_line_width = 1;
-	  ce->max_point_width = 1;
-	  ce->next = gl_contexts;
-	  gl_contexts = ce;
-	}
-	else {
-	  fprintf(stderr, "wglCreateContext failed\n");
-	  ZnFree(ce);
-	}
-      }
-      else {
-	ZnFree(ce);
-      }
-    }
-    ReleaseDC(ce->hwnd, ce->hdc);
-
-#  else /* _WIN32 */
-
+#  ifndef _WIN32
     XVisualInfo *gl_visual = NULL;
     Colormap	colormap = 0;
 
@@ -1144,10 +1079,76 @@ static void
 InitRendering2(ZnWInfo	*wi)
 {
   ZnGLContextEntry	*ce;
+  ZnGLContext		gl_context;
   GLfloat		r[2]; /* Min, Max */
   GLint			i[1];
 
   if (wi->render) {
+#  ifdef _WIN32
+    /*
+     * Look for a matching context already available.
+     */
+    ce = ZnGetGLContext(wi->dpy);
+    if (ce) {
+      gl_context = ce->context;
+      ce->hwnd = Tk_GetHWND(Tk_WindowId(wi->win));
+      ce->hdc = GetDC(ce->hwnd);
+      ZnListAdd(ce->widgets, &wi, ZnListTail);
+      SetPixelFormat(ce->hdc, ce->ipixel, &ce->pfd);
+    }
+    else {
+      ce = ZnMalloc(sizeof(ZnGLContextEntry));
+      ce->hwnd = Tk_GetHWND(Tk_WindowId(wi->win));
+      ce->hdc = GetDC(ce->hwnd);
+      ce->widgets = ZnListNew(1, sizeof(ZnWInfo *));
+      ZnListAdd(ce->widgets, &wi, ZnListTail);
+
+      memset(&ce->pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
+      ce->pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
+      ce->pfd.nVersion = 1;
+      ce->pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
+      ce->pfd.iPixelType = PFD_TYPE_RGBA;
+      ce->pfd.cRedBits = 8;
+      ce->pfd.cGreenBits = 8;
+      ce->pfd.cBlueBits = 8;
+      ce->pfd.cAlphaBits = 8;
+      ce->pfd.cStencilBits = 8;
+      ce->pfd.iLayerType = PFD_MAIN_PLANE;
+      ce->ipixel = ChoosePixelFormat(ce->hdc, &ce->pfd);
+      /*printf("ipixel=%d dwFlags=0x%x req=0x%x iPixelType=%d hdc=%d\n",
+	ce->ipixel,	ce->pfd.dwFlags,
+	PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER,	      
+	ce->pfd.iPixelType==PFD_TYPE_RGBA,
+	ce->hdc);*/
+      if (!ce->ipixel ||
+	  (ce->pfd.cRedBits != 8) || (ce->pfd.cGreenBits != 8) || (ce->pfd.cBlueBits != 8) ||
+	  (ce->pfd.cStencilBits != 8)) {
+	fprintf(stderr, "ChoosePixelFormat failed\n");
+      }
+      
+      if (SetPixelFormat(ce->hdc, ce->ipixel, &ce->pfd) == TRUE) {
+	gl_context = wglCreateContext(ce->hdc);
+	if (gl_context) {
+	  ce->context = gl_context;
+	  ce->dpy = wi->dpy;
+	  ce->max_tex_size = 64; /* Minimum value is always valid */
+	  ce->max_line_width = 1;
+	  ce->max_point_width = 1;
+	  ce->next = gl_contexts;
+	  gl_contexts = ce;
+	}
+	else {
+	  fprintf(stderr, "wglCreateContext failed\n");
+	  ZnFree(ce);
+	}
+      }
+      else {
+	ZnFree(ce);
+      }
+    }
+    ReleaseDC(ce->hwnd, ce->hdc);
+#endif
+
     ce = ZnGLMakeCurrent(wi->dpy, wi);
     glGetFloatv(ZN_GL_LINE_WIDTH_RANGE, r);
     ce->max_line_width = r[1];
-- 
cgit v1.1