1 files changed, 296 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/wgl/stw_wgl_context.c b/src/gallium/state_trackers/wgl/stw_wgl_context.c
new file mode 100644
index 0000000000..890d97fd72
--- /dev/null
+++ b/src/gallium/state_trackers/wgl/stw_wgl_context.c
@@ -0,0 +1,296 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include <windows.h>
+
+#include "main/mtypes.h"
+#include "main/context.h"
+#include "pipe/p_compiler.h"
+#include "pipe/p_context.h"
+#include "state_tracker/st_context.h"
+#include "state_tracker/st_public.h"
+#include "stw_device.h"
+#include "stw_winsys.h"
+#include "stw_framebuffer.h"
+#include "stw_pixelformat.h"
+#include "stw_wgl_arbmultisample.h"
+#include "stw_wgl_context.h"
+#include "stw_wgl.h"
+
+static struct wgl_context *ctx_head = NULL;
+
+static HDC current_hdc = NULL;
+static HGLRC current_hrc = NULL;
+
+WINGDIAPI BOOL APIENTRY
+wglCopyContext(
+   HGLRC hglrcSrc,
+   HGLRC hglrcDst,
+   UINT mask )
+{
+   (void) hglrcSrc;
+   (void) hglrcDst;
+   (void) mask;
+
+   return FALSE;
+}
+
+WINGDIAPI HGLRC APIENTRY
+wglCreateContext(
+   HDC hdc )
+{
+   uint pfi;
+   const struct pixelformat_info *pf;
+   struct wgl_context *ctx;
+   GLvisual *visual;
+   struct pipe_context *pipe;
+
+   pfi = wglGetPixelFormat( hdc );
+   if (pfi == 0)
+      return NULL;
+
+   pf = pixelformat_get_info( pfi - 1 );
+
+   ctx = CALLOC_STRUCT( wgl_context );
+   if (ctx == NULL)
+      return NULL;
+
+   ctx->hdc = hdc;
+   ctx->color_bits = GetDeviceCaps( ctx->hdc, BITSPIXEL );
+
+   /* Create visual based on flags
+    */
+   visual = _mesa_create_visual(
+      GL_TRUE,
+      (pf->flags & PF_FLAG_DOUBLEBUFFER) ? GL_TRUE : GL_FALSE,
+      GL_FALSE,
+      pf->color.redbits,
+      pf->color.greenbits,
+      pf->color.bluebits,
+      pf->alpha.alphabits,
+      0,
+      pf->depth.depthbits,
+      pf->depth.stencilbits,
+      0,
+      0,
+      0,
+      0,
+      (pf->flags & PF_FLAG_MULTISAMPLED) ? wgl_query_samples() : 0 );
+   if (visual == NULL) {
+      FREE( ctx );
+      return NULL;
+   }
+
+   pipe = stw_dev->stw_winsys->create_context( stw_dev->screen );
+   if (!pipe) {
+      _mesa_destroy_visual( visual );
+      FREE( ctx );
+      return NULL;
+   }
+   
+   assert(!pipe->priv);
+   pipe->priv = hdc;
+
+   ctx->st = st_create_context( pipe, visual, NULL );
+   if (ctx->st == NULL) {
+      pipe->destroy( pipe );
+      _mesa_destroy_visual( visual );
+      FREE( ctx );
+      return NULL;
+   }
+   ctx->st->ctx->DriverCtx = ctx;
+
+   ctx->next = ctx_head;
+   ctx_head = ctx;
+
+   return (HGLRC) ctx;
+}
+
+WINGDIAPI HGLRC APIENTRY
+wglCreateLayerContext(
+   HDC hdc,
+   int iLayerPlane )
+{
+   (void) hdc;
+   (void) iLayerPlane;
+
+   return NULL;
+}
+
+WINGDIAPI BOOL APIENTRY
+wglDeleteContext(
+   HGLRC hglrc )
+{
+   struct wgl_context **link = &ctx_head;
+   struct wgl_context *ctx = ctx_head;
+
+   while (ctx != NULL) {
+      if (ctx == (struct wgl_context *) hglrc) {
+         GLcontext *glctx = ctx->st->ctx;
+         GET_CURRENT_CONTEXT( glcurctx );
+         struct stw_framebuffer *fb;
+
+         /* Unbind current if deleting current context.
+          */
+         if (glcurctx == glctx)
+            st_make_current( NULL, NULL, NULL );
+
+         fb = framebuffer_from_hdc( ctx->hdc );
+         if (fb)
+            framebuffer_destroy( fb );
+
+         if (WindowFromDC( ctx->hdc ) != NULL)
+            ReleaseDC( WindowFromDC( ctx->hdc ), ctx->hdc );
+
+         st_destroy_context( ctx->st );
+
+         *link = ctx->next;
+         FREE( ctx );
+         return TRUE;
+      }
+
+      link = &ctx->next;
+      ctx = ctx->next;
+   }
+
+   return FALSE;
+}
+
+/* Find the width and height of the window named by hdc.
+ */
+static void
+get_window_size( HDC hdc, GLuint *width, GLuint *height )
+{
+   if (WindowFromDC( hdc )) {
+      RECT rect;
+
+      GetClientRect( WindowFromDC( hdc ), &rect );
+      *width = rect.right - rect.left;
+      *height = rect.bottom - rect.top;
+   }
+   else {
+      *width = GetDeviceCaps( hdc, HORZRES );
+      *height = GetDeviceCaps( hdc, VERTRES );
+   }
+}
+
+WINGDIAPI HGLRC APIENTRY
+wglGetCurrentContext( VOID )
+{
+   return current_hrc;
+}
+
+WINGDIAPI HDC APIENTRY
+wglGetCurrentDC( VOID )
+{
+    return current_hdc;
+}
+
+WINGDIAPI BOOL APIENTRY
+wglMakeCurrent(
+   HDC hdc,
+   HGLRC hglrc )
+{
+   struct wgl_context *ctx = ctx_head;
+   GET_CURRENT_CONTEXT( glcurctx );
+   struct stw_framebuffer *fb;
+   GLuint width = 0;
+   GLuint height = 0;
+
+   current_hdc = hdc;
+   current_hrc = hglrc;
+
+   if (hdc == NULL || hglrc == NULL) {
+      st_make_current( NULL, NULL, NULL );
+      return TRUE;
+   }
+
+   while (ctx != NULL) {
+      if (ctx == (struct wgl_context *) hglrc)
+         break;
+      ctx = ctx->next;
+   }
+   if (ctx == NULL)
+      return FALSE;
+
+   /* Return if already current.
+    */
+   if (glcurctx != NULL) {
+      struct wgl_context *curctx = (struct wgl_context *) glcurctx->DriverCtx;
+
+      if (curctx != NULL && curctx == ctx && ctx->hdc == hdc)
+         return TRUE;
+   }
+
+   fb = framebuffer_from_hdc( hdc );
+
+   if (hdc != NULL)
+      get_window_size( hdc, &width, &height );
+
+   /* Lazy creation of framebuffers.
+    */
+   if (fb == NULL && ctx != NULL && hdc != NULL) {
+      GLvisual *visual = &ctx->st->ctx->Visual;
+
+      fb = framebuffer_create( hdc, visual, width, height );
+      if (fb == NULL)
+         return FALSE;
+
+      fb->dib_hDC = CreateCompatibleDC( hdc );
+      fb->hbmDIB = NULL;
+      fb->pbPixels = NULL;
+   }
+
+   if (ctx && fb) {
+      st_make_current( ctx->st, fb->stfb, fb->stfb );
+      framebuffer_resize( fb, width, height );
+      ctx->hdc = hdc;
+      ctx->st->pipe->priv = hdc;
+   }
+   else {
+      /* Detach */
+      st_make_current( NULL, NULL, NULL );
+   }
+
+   return TRUE;
+}
+
+struct wgl_context *
+wgl_context_from_hdc(
+   HDC hdc )
+{
+   struct wgl_context *ctx = ctx_head;
+
+   while (ctx != NULL) {
+      if (ctx->hdc == hdc)
+         return ctx;
+      ctx = ctx->next;
+   }
+   return NULL;
+}
+
+#include "stw_wgl.c"