From f66084b834ce37e7f0143e456df1265cd343a674 Mon Sep 17 00:00:00 2001
From: Karl Schultz <kschultz@freedesktop.org>
Date: Mon, 5 Sep 2005 14:48:39 +0000
Subject: [PATCH] Add support for memory contexts (Thomas Kaltofen).  Cleanup
 compilation warnings.

---
 include/GL/wmesa.h                      |  4 ++--
 src/mesa/drivers/windows/gdi/wgl.c      | 30 +++++++++++++---------------
 src/mesa/drivers/windows/gdi/wmesa.c    | 35 +++++++++++++++++++--------------
 src/mesa/drivers/windows/gdi/wmesadef.h |  2 --
 4 files changed, 36 insertions(+), 35 deletions(-)

diff --git a/include/GL/wmesa.h b/include/GL/wmesa.h
index 0a6e8b6..66f3dbe 100644
--- a/include/GL/wmesa.h
+++ b/include/GL/wmesa.h
@@ -78,7 +78,7 @@ typedef struct wmesa_context *WMesaContext;
  * appropriate colormap.
  *
  * Input:
- *         hWnd - Window handle
+ *         hDC - Windows device or memory context
  *         Pal  - Palette to use
  *         rgb_flag - GL_TRUE = RGB mode,
  *                    GL_FALSE = color index mode
@@ -91,7 +91,7 @@ typedef struct wmesa_context *WMesaContext;
  *
  * Return:  a WMesa_context or NULL if error.
  */
-extern WMesaContext WMesaCreateContext(HWND hWnd,HPALETTE* pPal,
+extern WMesaContext WMesaCreateContext(HDC hDC,HPALETTE* pPal,
                                        GLboolean rgb_flag,
                                        GLboolean db_flag,
                                        GLboolean alpha_flag);
diff --git a/src/mesa/drivers/windows/gdi/wgl.c b/src/mesa/drivers/windows/gdi/wgl.c
index 2d3f696..1f69f73 100644
--- a/src/mesa/drivers/windows/gdi/wgl.c
+++ b/src/mesa/drivers/windows/gdi/wgl.c
@@ -1,4 +1,4 @@
-/* $Id: wgl.c,v 1.9 2005/07/01 15:56:14 kschultz Exp $ */
+/* $Id: wgl.c,v 1.10 2005/09/05 14:48:39 kschultz Exp $ */
 
 /*
  * This library is free software; you can redistribute it and/or
@@ -34,6 +34,7 @@
  * we get the right export linkage. */
 #define _GDI32_
 #include <windows.h>
+#include "glapi.h"
 
 #include "GL/wmesa.h"   /* protos for wmesa* functions */
 
@@ -155,12 +156,7 @@ static unsigned curPFD = 0;
 
 WINGDIAPI HGLRC GLAPIENTRY wglCreateContext(HDC hdc)
 {
-    HWND hWnd;
     int i = 0;
-    if(!(hWnd = WindowFromDC(hdc))) {
-	SetLastError(0);
-	return(NULL);
-    }
     if (!ctx_count) {
 	for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++) {
 	    wgl_ctx[i].ctx = NULL;
@@ -170,10 +166,11 @@ WINGDIAPI HGLRC GLAPIENTRY wglCreateContext(HDC hdc)
     for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ ) {
         if ( wgl_ctx[i].ctx == NULL ) {
             wgl_ctx[i].ctx = 
-		WMesaCreateContext(hWnd, NULL, GL_TRUE,
-				   pfd[curPFD-1].doubleBuffered, 
-				   pfd[curPFD-1].pfd.cAlphaBits ? 
-				   GL_TRUE : GL_FALSE);
+		WMesaCreateContext(hdc, NULL, (GLboolean)GL_TRUE,
+				   (GLboolean) (pfd[curPFD-1].doubleBuffered ?
+                                   GL_TRUE : GL_FALSE), 
+				   (GLboolean)(pfd[curPFD-1].pfd.cAlphaBits ? 
+				   GL_TRUE : GL_FALSE) );
             if (wgl_ctx[i].ctx == NULL)
                 break;
             wgl_ctx[i].hdc = hdc;
@@ -418,7 +415,7 @@ static BOOL wglUseFontBitmaps_FX(HDC fontDevice, DWORD firstChar,
 	HGDIOBJ origBmap;
 	unsigned char *bmap;
 	
-	curChar = i + firstChar;
+	curChar = (char)(i + firstChar);
 	
 	// Find how high/wide this character is
 	VERIFY(GetTextExtentPoint32(bitDevice, &curChar, 1, &size));
@@ -461,8 +458,8 @@ static BOOL wglUseFontBitmaps_FX(HDC fontDevice, DWORD firstChar,
 	
 	// Create the GL object
 	glNewList(i + listBase, GL_COMPILE);
-	glBitmap(bmapWidth, bmapHeight, 0.0, metric.tmDescent,
-		 charWidth, 0.0,
+	glBitmap(bmapWidth, bmapHeight, 0.0, (GLfloat)metric.tmDescent,
+		 (GLfloat)charWidth, 0.0,
 		 bmap);
 	glEndList();
 	// CheckGL();
@@ -559,9 +556,10 @@ WINGDIAPI BOOL GLAPIENTRY wglUseFontBitmapsA(HDC hdc, DWORD first,
 	}
 	
 	glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY,
-		 -gm.gmptGlyphOrigin.x,
-		 gm.gmptGlyphOrigin.y,
-		 gm.gmCellIncX,gm.gmCellIncY,
+		 (GLfloat)-gm.gmptGlyphOrigin.x,
+		 (GLfloat)gm.gmptGlyphOrigin.y,
+		 (GLfloat)gm.gmCellIncX,
+		 (GLfloat)gm.gmCellIncY,
 		 (const GLubyte * )lpBits);
 	
 	GlobalUnlock(hBits);
diff --git a/src/mesa/drivers/windows/gdi/wmesa.c b/src/mesa/drivers/windows/gdi/wmesa.c
index 00cd375..cc68fe6 100644
--- a/src/mesa/drivers/windows/gdi/wmesa.c
+++ b/src/mesa/drivers/windows/gdi/wmesa.c
@@ -1,5 +1,5 @@
 /*
- * Windows (Win32) device driver for Mesa
+ * Windows (Win32/Win64) device driver for Mesa
  *
  */
 
@@ -890,7 +890,6 @@ static void
 wmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer,
                      GLuint width, GLuint height)
 {
-    RECT CR;
     if (Current->width != width || Current->height != height) {
 	Current->width = width;
 	Current->height = height;
@@ -899,9 +898,6 @@ wmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer,
 	    wmDeleteBackingStore(Current);
 	    wmCreateBackingStore(Current, width, height);
 	}
-	GetClientRect(Current->Window, &CR);
-	Current->width = CR.right;
-	Current->height = CR.bottom;
     }
     _mesa_resize_framebuffer(ctx, buffer, width, height);
 }
@@ -954,13 +950,12 @@ static void wmesa_update_state(GLcontext *ctx, GLuint new_state)
 /*****                   WMESA Functions                          *****/
 /**********************************************************************/
 
-WMesaContext WMesaCreateContext(HWND hWnd, 
+WMesaContext WMesaCreateContext(HDC hDC, 
 				HPALETTE* Pal,
 				GLboolean rgb_flag,
 				GLboolean db_flag,
 				GLboolean alpha_flag)
 {
-    RECT CR;
     WMesaContext c;
     struct dd_function_table functions;
     struct gl_renderbuffer *rb;
@@ -974,12 +969,18 @@ WMesaContext WMesaCreateContext(HWND hWnd,
     c = CALLOC_STRUCT(wmesa_context);
     if (!c)
 	return NULL;
-    
-    c->Window = hWnd;
-    c->hDC = GetDC(hWnd);
-    GetClientRect(c->Window, &CR);
-    c->width = CR.right;
-    c->height = CR.bottom;
+
+    /* Support memory and device contexts */
+    if(WindowFromDC(hDC) != NULL)
+    {
+      c->hDC = GetDC(WindowFromDC(hDC));
+    }
+    else
+    {
+      c->hDC = hDC;
+    }
+    c->width = GetDeviceCaps(c->hDC, HORZRES);
+    c->height = GetDeviceCaps(c->hDC, VERTRES);
 
     c->clearPen = CreatePen(PS_SOLID, 1, 0); 
     c->clearBrush = CreateSolidBrush(0); 
@@ -997,7 +998,7 @@ WMesaContext WMesaCreateContext(HWND hWnd,
 				       8,8,8,      /* color RGB */
 				       alpha_flag ? 8 : 0, /* color A */
 				       0,          /* index bits */
-				       16,         /* depth_bits */
+				       DEFAULT_SOFTWARE_DEPTH_BITS,         /* depth_bits */
 				       8,          /* stencil_bits */
 				       16,16,16,   /* accum RGB */
 				       alpha_flag ? 16 : 0, /* accum A */
@@ -1133,7 +1134,11 @@ void WMesaDestroyContext( void )
 
     WMesaMakeCurrent(NULL);
 
-    ReleaseDC(c->Window, c->hDC);
+    /* Release for device, not memory contexts */
+    if(WindowFromDC(c->hDC) != NULL)
+    {
+      ReleaseDC(WindowFromDC(c->hDC), c->hDC);
+    }
     DeleteObject(c->clearPen); 
     DeleteObject(c->clearBrush); 
     
diff --git a/src/mesa/drivers/windows/gdi/wmesadef.h b/src/mesa/drivers/windows/gdi/wmesadef.h
index 9aa0ab20..a9d0a447 100644
--- a/src/mesa/drivers/windows/gdi/wmesadef.h
+++ b/src/mesa/drivers/windows/gdi/wmesadef.h
@@ -12,8 +12,6 @@ typedef struct wmesa_context{
     GLcontext           *gl_ctx;	/* The core GL/Mesa context */
     GLvisual            *gl_visual;	/* Describes the buffers */
     GLframebuffer       *gl_buffer;	/* Depth, stencil, accum, etc buffers*/
-    
-    HWND		Window;
     HDC                 hDC;
     COLORREF		clearColorRef;
     HPEN                clearPen;
-- 
2.7.4