[Mesa-dev] [PATCH] gallium: implement WGL_ARB_create_context

morgan armand morgan.devel at gmail.com
Tue Oct 25 09:41:45 PDT 2011


Here is the modified patch. I just checked if it works but doesn't
have a good test case for it. But I will write one for sure!

---
 src/gallium/state_trackers/wgl/SConscript          |    1 +
 src/gallium/state_trackers/wgl/stw_context.c       |   47 +++++++-
 src/gallium/state_trackers/wgl/stw_context.h       |    3 +
 src/gallium/state_trackers/wgl/stw_ext_context.c   |  119 ++++++++++++++++++++
 .../state_trackers/wgl/stw_getprocaddress.c        |    3 +
 5 files changed, 166 insertions(+), 7 deletions(-)
 create mode 100644 src/gallium/state_trackers/wgl/stw_ext_context.c

diff --git a/src/gallium/state_trackers/wgl/SConscript
b/src/gallium/state_trackers/wgl/SConscript
index 7cb953b..1014b45 100644
--- a/src/gallium/state_trackers/wgl/SConscript
+++ b/src/gallium/state_trackers/wgl/SConscript
@@ -22,6 +22,7 @@ if not env['gles']:
 sources = [
     'stw_context.c',
     'stw_device.c',
+    'stw_ext_context.c',
     'stw_ext_extensionsstring.c',
     'stw_ext_gallium.c',
     'stw_ext_pbuffer.c',
diff --git a/src/gallium/state_trackers/wgl/stw_context.c
b/src/gallium/state_trackers/wgl/stw_context.c
index c2839fe..6cc8a83 100644
--- a/src/gallium/state_trackers/wgl/stw_context.c
+++ b/src/gallium/state_trackers/wgl/stw_context.c
@@ -27,6 +27,11 @@

 #include <windows.h>

+#define WGL_WGLEXT_PROTOTYPES
+
+#include <GL/gl.h>
+#include <GL/wglext.h>
+
 #include "pipe/p_compiler.h"
 #include "pipe/p_context.h"
 #include "pipe/p_state.h"
@@ -121,23 +126,41 @@ DrvCreateLayerContext(
    HDC hdc,
    INT iLayerPlane )
 {
+   return stw_create_context_attribs(hdc, iLayerPlane, 0, 1, 0, 0,
WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB);
+}
+
+DHGLRC
+stw_create_context_attribs(
+   HDC hdc,
+   INT iLayerPlane,
+   DHGLRC hShareContext,
+   int majorVersion, int minorVersion,
+   int contextFlags, int profileMask)
+{
    int iPixelFormat;
    const struct stw_pixelformat_info *pfi;
    struct st_context_attribs attribs;
    struct stw_context *ctx = NULL;
-
-   if(!stw_dev)
+   struct stw_context *shareCtx = NULL;
+
+   if (!stw_dev)
       return 0;
-
+
    if (iLayerPlane != 0)
       return 0;

    iPixelFormat = GetPixelFormat(hdc);
    if(!iPixelFormat)
       return 0;
-
+
    pfi = stw_pixelformat_get_info( iPixelFormat - 1 );
-
+
+   if (hShareContext != 0) {
+      pipe_mutex_lock( stw_dev->ctx_mutex );
+      shareCtx = stw_lookup_context_locked( hShareContext );
+      pipe_mutex_unlock( stw_dev->ctx_mutex );
+   }
+
    ctx = CALLOC_STRUCT( stw_context );
    if (ctx == NULL)
       goto no_ctx;
@@ -148,10 +171,20 @@ DrvCreateLayerContext(
    memset(&attribs, 0, sizeof(attribs));
    attribs.profile = ST_PROFILE_DEFAULT;
    attribs.visual = pfi->stvis;
+   attribs.major = majorVersion;
+   attribs.minor = minorVersion;
+   if (contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
+      attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
+   if (contextFlags & WGL_CONTEXT_DEBUG_BIT_ARB)
+      attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
+   if (profileMask & WGL_CONTEXT_CORE_PROFILE_BIT_ARB)
+      attribs.flags |= ST_CONTEXT_FLAG_CORE_PROFILE;
+   if (profileMask & WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB)
+      attribs.flags |= ST_CONTEXT_FLAG_COMPATIBLE_PROFILE;

    ctx->st = stw_dev->stapi->create_context(stw_dev->stapi,
-         stw_dev->smapi, &attribs, NULL);
-   if (ctx->st == NULL)
+         stw_dev->smapi, &attribs, shareCtx ? shareCtx->st : NULL);
+   if (ctx->st == NULL)
       goto no_st_ctx;

    ctx->st->st_manager_private = (void *) ctx;
diff --git a/src/gallium/state_trackers/wgl/stw_context.h
b/src/gallium/state_trackers/wgl/stw_context.h
index 0bbed84..07a5c7d 100644
--- a/src/gallium/state_trackers/wgl/stw_context.h
+++ b/src/gallium/state_trackers/wgl/stw_context.h
@@ -43,6 +43,9 @@ struct stw_context
    struct stw_framebuffer *current_framebuffer;
 };

+DHGLRC stw_create_context_attribs( HDC hdc, INT iLayerPlane, DHGLRC
hShareContext,
+                                   int majorVersion, int
minorVersion, int contextFlags, int profileMask );
+
 DHGLRC stw_get_current_context( void );

 HDC stw_get_current_dc( void );
diff --git a/src/gallium/state_trackers/wgl/stw_ext_context.c
b/src/gallium/state_trackers/wgl/stw_ext_context.c
new file mode 100644
index 0000000..a3470ac
--- /dev/null
+++ b/src/gallium/state_trackers/wgl/stw_ext_context.c
@@ -0,0 +1,119 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.11
+ *
+ * Copyright (C) 2011 Morgan Armand <morgan.devel at gmail.com>
+ *
+ * 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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL 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>
+
+#define WGL_WGLEXT_PROTOTYPES
+
+#include <GL/gl.h>
+#include <GL/wglext.h>
+
+#include "stw_icd.h"
+#include "stw_context.h"
+
+HGLRC WINAPI
+wglCreateContextAttribsARB(HDC hDC, HGLRC hShareContext, const int *attribList)
+{
+   int majorVersion = 1, minorVersion = 0, layerPlane = 0;
+   int contextFlags = 0x0;
+   int profileMask = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
+   int i;
+   BOOL done = FALSE;
+
+   /* parse attrib_list */
+   if (attribList) {
+      for (i = 0; !done && attribList[i]; i++) {
+         switch (attribList[i]) {
+         case WGL_CONTEXT_MAJOR_VERSION_ARB:
+            majorVersion = attribList[++i];
+            break;
+         case WGL_CONTEXT_MINOR_VERSION_ARB:
+            minorVersion = attribList[++i];
+            break;
+         case WGL_CONTEXT_LAYER_PLANE_ARB:
+            layerPlane = attribList[++i];
+            break;
+         case WGL_CONTEXT_FLAGS_ARB:
+            contextFlags = attribList[++i];
+            break;
+         case WGL_CONTEXT_PROFILE_MASK_ARB:
+            profileMask = attribList[++i];
+            break;
+         case 0:
+            /* end of list */
+            done = TRUE;
+            break;
+         default:
+            /* bad attribute */
+            SetLastError(ERROR_INVALID_PARAMETER);
+            return NULL;
+         }
+      }
+   }
+
+   /* check version (generate ERROR_INVALID_VERSION_ARB if bad) */
+   switch (majorVersion) {
+   case 1:
+      if (minorVersion < 0 || minorVersion > 5) {
+         SetLastError(ERROR_INVALID_VERSION_ARB);
+         return NULL;
+      }
+      break;
+   case 2:
+      if (minorVersion < 0 || minorVersion > 1) {
+         SetLastError(ERROR_INVALID_VERSION_ARB);
+         return NULL;
+      }
+      break;
+   case 3:
+      if (minorVersion < 0 || minorVersion > 3) {
+         SetLastError(ERROR_INVALID_VERSION_ARB);
+         return NULL;
+      }
+      break;
+   case 4:
+      if (minorVersion < 0 || minorVersion > 2) {
+         SetLastError(ERROR_INVALID_VERSION_ARB);
+         return NULL;
+      }
+      break;
+   default:
+      return NULL;
+   }
+
+   if ((contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
majorVersion < 3) {
+      SetLastError(ERROR_INVALID_VERSION_ARB);
+      return NULL;
+   }
+
+   /* check profileMask */
+   if (profileMask != WGL_CONTEXT_CORE_PROFILE_BIT_ARB &&
+       profileMask != WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
+      SetLastError(ERROR_INVALID_PROFILE_ARB);
+      return NULL;
+   }
+
+   return (HGLRC) stw_create_context_attribs( hDC, layerPlane,
(DHGLRC)(UINT_PTR)hShareContext,
+                                              majorVersion,
minorVersion, contextFlags, profileMask );
+}
diff --git a/src/gallium/state_trackers/wgl/stw_getprocaddress.c
b/src/gallium/state_trackers/wgl/stw_getprocaddress.c
index b0aef94..a1df44c 100644
--- a/src/gallium/state_trackers/wgl/stw_getprocaddress.c
+++ b/src/gallium/state_trackers/wgl/stw_getprocaddress.c
@@ -73,6 +73,9 @@ static const struct stw_extension_entry
stw_extension_entries[] = {
    STW_EXTENSION_ENTRY( wglGetGalliumScreenMESA ),
    STW_EXTENSION_ENTRY( wglCreateGalliumContextMESA ),

+   /* WGL_ARB_create_context */
+   STW_EXTENSION_ENTRY( wglCreateContextAttribsARB ),
+
    { NULL, NULL }
 };

-- 
1.7.7.msysgit.1

On Mon, Oct 24, 2011 at 5:37 PM, Jose Fonseca <jfonseca at vmware.com> wrote:
> Looks good to me.  Just a few minor requests:
> - The APIENTRY keyword in stw_create_context_attribs() is unnecessary given it is an internal API.
> - Please move the stw_create_context_attribs() immediately after DrvCreateLayerContext so that the code doesn't move around so much, and the diff is cleaner.
>
> BTW, do you have test case for this? It would be really good have one in piglit and/or mesa demos.
>
> Jose
>
> ----- Original Message -----
>> Sorry about the missing file. Here is the patch taking into account
>> your remarks.
>>
>> ---
>>  src/gallium/state_trackers/wgl/SConscript          |    1 +
>>  src/gallium/state_trackers/wgl/stw_context.c       |  130
>>  ++++++++++++--------
>>  src/gallium/state_trackers/wgl/stw_context.h       |    3 +
>>  src/gallium/state_trackers/wgl/stw_ext_context.c   |  119
>>  ++++++++++++++++++
>>  .../state_trackers/wgl/stw_getprocaddress.c        |    3 +
>>  5 files changed, 207 insertions(+), 49 deletions(-)
>>  create mode 100644 src/gallium/state_trackers/wgl/stw_ext_context.c
>>
>> diff --git a/src/gallium/state_trackers/wgl/SConscript
>> b/src/gallium/state_trackers/wgl/SConscript
>> index 7cb953b..1014b45 100644
>> --- a/src/gallium/state_trackers/wgl/SConscript
>> +++ b/src/gallium/state_trackers/wgl/SConscript
>> @@ -22,6 +22,7 @@ if not env['gles']:
>>  sources = [
>>      'stw_context.c',
>>      'stw_device.c',
>> +    'stw_ext_context.c',
>>      'stw_ext_extensionsstring.c',
>>      'stw_ext_gallium.c',
>>      'stw_ext_pbuffer.c',
>> diff --git a/src/gallium/state_trackers/wgl/stw_context.c
>> b/src/gallium/state_trackers/wgl/stw_context.c
>> index c2839fe..152984a 100644
>> --- a/src/gallium/state_trackers/wgl/stw_context.c
>> +++ b/src/gallium/state_trackers/wgl/stw_context.c
>> @@ -27,6 +27,11 @@
>>
>>  #include <windows.h>
>>
>> +#define WGL_WGLEXT_PROTOTYPES
>> +
>> +#include <GL/gl.h>
>> +#include <GL/wglext.h>
>> +
>>  #include "pipe/p_compiler.h"
>>  #include "pipe/p_context.h"
>>  #include "pipe/p_state.h"
>> @@ -121,55 +126,7 @@ DrvCreateLayerContext(
>>     HDC hdc,
>>     INT iLayerPlane )
>>  {
>> -   int iPixelFormat;
>> -   const struct stw_pixelformat_info *pfi;
>> -   struct st_context_attribs attribs;
>> -   struct stw_context *ctx = NULL;
>> -
>> -   if(!stw_dev)
>> -      return 0;
>> -
>> -   if (iLayerPlane != 0)
>> -      return 0;
>> -
>> -   iPixelFormat = GetPixelFormat(hdc);
>> -   if(!iPixelFormat)
>> -      return 0;
>> -
>> -   pfi = stw_pixelformat_get_info( iPixelFormat - 1 );
>> -
>> -   ctx = CALLOC_STRUCT( stw_context );
>> -   if (ctx == NULL)
>> -      goto no_ctx;
>> -
>> -   ctx->hdc = hdc;
>> -   ctx->iPixelFormat = iPixelFormat;
>> -
>> -   memset(&attribs, 0, sizeof(attribs));
>> -   attribs.profile = ST_PROFILE_DEFAULT;
>> -   attribs.visual = pfi->stvis;
>> -
>> -   ctx->st = stw_dev->stapi->create_context(stw_dev->stapi,
>> -         stw_dev->smapi, &attribs, NULL);
>> -   if (ctx->st == NULL)
>> -      goto no_st_ctx;
>> -
>> -   ctx->st->st_manager_private = (void *) ctx;
>> -
>> -   pipe_mutex_lock( stw_dev->ctx_mutex );
>> -   ctx->dhglrc = handle_table_add(stw_dev->ctx_table, ctx);
>> -   pipe_mutex_unlock( stw_dev->ctx_mutex );
>> -   if (!ctx->dhglrc)
>> -      goto no_hglrc;
>> -
>> -   return ctx->dhglrc;
>> -
>> -no_hglrc:
>> -   ctx->st->destroy(ctx->st);
>> -no_st_ctx:
>> -   FREE(ctx);
>> -no_ctx:
>> -   return 0;
>> +   return stw_create_context_attribs(hdc, iLayerPlane, 0, 1, 0, 0,
>> WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB);
>>  }
>>
>>  BOOL APIENTRY
>> @@ -232,6 +189,81 @@ DrvReleaseContext(
>>     return TRUE;
>>  }
>>
>> +DHGLRC APIENTRY
>> +stw_create_context_attribs(
>> +   HDC hdc,
>> +   INT iLayerPlane,
>> +   DHGLRC hShareContext,
>> +   int majorVersion, int minorVersion,
>> +   int contextFlags, int profileMask)
>> +{
>> +   int iPixelFormat;
>> +   const struct stw_pixelformat_info *pfi;
>> +   struct st_context_attribs attribs;
>> +   struct stw_context *ctx = NULL;
>> +   struct stw_context *shareCtx = NULL;
>> +
>> +   if(!stw_dev)
>> +      return 0;
>> +
>> +   if (iLayerPlane != 0)
>> +      return 0;
>> +
>> +   iPixelFormat = GetPixelFormat(hdc);
>> +   if(!iPixelFormat)
>> +      return 0;
>> +
>> +   pfi = stw_pixelformat_get_info( iPixelFormat - 1 );
>> +
>> +   if (hShareContext != 0) {
>> +      pipe_mutex_lock( stw_dev->ctx_mutex );
>> +      shareCtx = stw_lookup_context_locked( hShareContext );
>> +      pipe_mutex_unlock( stw_dev->ctx_mutex );
>> +   }
>> +
>> +   ctx = CALLOC_STRUCT( stw_context );
>> +   if (ctx == NULL)
>> +      goto no_ctx;
>> +
>> +   ctx->hdc = hdc;
>> +   ctx->iPixelFormat = iPixelFormat;
>> +
>> +   memset(&attribs, 0, sizeof(attribs));
>> +   attribs.profile = ST_PROFILE_DEFAULT;
>> +   attribs.visual = pfi->stvis;
>> +   attribs.major = majorVersion;
>> +   attribs.minor = minorVersion;
>> +   if (contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
>> +      attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
>> +   if (contextFlags & WGL_CONTEXT_DEBUG_BIT_ARB)
>> +      attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
>> +   if (profileMask & WGL_CONTEXT_CORE_PROFILE_BIT_ARB)
>> +      attribs.flags |= ST_CONTEXT_FLAG_CORE_PROFILE;
>> +   if (profileMask & WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB)
>> +      attribs.flags |= ST_CONTEXT_FLAG_COMPATIBLE_PROFILE;
>> +
>> +   ctx->st = stw_dev->stapi->create_context(stw_dev->stapi,
>> +         stw_dev->smapi, &attribs, shareCtx ? shareCtx->st : NULL);
>> +   if (ctx->st == NULL)
>> +      goto no_st_ctx;
>> +
>> +   ctx->st->st_manager_private = (void *) ctx;
>> +
>> +   pipe_mutex_lock( stw_dev->ctx_mutex );
>> +   ctx->dhglrc = handle_table_add(stw_dev->ctx_table, ctx);
>> +   pipe_mutex_unlock( stw_dev->ctx_mutex );
>> +   if (!ctx->dhglrc)
>> +      goto no_hglrc;
>> +
>> +   return ctx->dhglrc;
>> +
>> +no_hglrc:
>> +   ctx->st->destroy(ctx->st);
>> +no_st_ctx:
>> +   FREE(ctx);
>> +no_ctx:
>> +   return 0;
>> +}
>>
>>  DHGLRC
>>  stw_get_current_context( void )
>> diff --git a/src/gallium/state_trackers/wgl/stw_context.h
>> b/src/gallium/state_trackers/wgl/stw_context.h
>> index 0bbed84..103768b 100644
>> --- a/src/gallium/state_trackers/wgl/stw_context.h
>> +++ b/src/gallium/state_trackers/wgl/stw_context.h
>> @@ -43,6 +43,9 @@ struct stw_context
>>     struct stw_framebuffer *current_framebuffer;
>>  };
>>
>> +DHGLRC APIENTRY stw_create_context_attribs( HDC hdc, INT
>> iLayerPlane,
>> DHGLRC hShareContext,
>> +                                            int majorVersion, int
>> minorVersion, int contextFlags, int profileMask );
>> +
>>  DHGLRC stw_get_current_context( void );
>>
>>  HDC stw_get_current_dc( void );
>> diff --git a/src/gallium/state_trackers/wgl/stw_ext_context.c
>> b/src/gallium/state_trackers/wgl/stw_ext_context.c
>> new file mode 100644
>> index 0000000..a3470ac
>> --- /dev/null
>> +++ b/src/gallium/state_trackers/wgl/stw_ext_context.c
>> @@ -0,0 +1,119 @@
>> +/*
>> + * Mesa 3-D graphics library
>> + * Version:  7.11
>> + *
>> + * Copyright (C) 2011 Morgan Armand <morgan.devel at gmail.com>
>> + *
>> + * 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,
>> sublicense,
>> + * 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 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 NONINFRINGEMENT.  IN NO
>> EVENT SHALL
>> + * BRIAN PAUL 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>
>> +
>> +#define WGL_WGLEXT_PROTOTYPES
>> +
>> +#include <GL/gl.h>
>> +#include <GL/wglext.h>
>> +
>> +#include "stw_icd.h"
>> +#include "stw_context.h"
>> +
>> +HGLRC WINAPI
>> +wglCreateContextAttribsARB(HDC hDC, HGLRC hShareContext, const int
>> *attribList)
>> +{
>> +   int majorVersion = 1, minorVersion = 0, layerPlane = 0;
>> +   int contextFlags = 0x0;
>> +   int profileMask = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
>> +   int i;
>> +   BOOL done = FALSE;
>> +
>> +   /* parse attrib_list */
>> +   if (attribList) {
>> +      for (i = 0; !done && attribList[i]; i++) {
>> +         switch (attribList[i]) {
>> +         case WGL_CONTEXT_MAJOR_VERSION_ARB:
>> +            majorVersion = attribList[++i];
>> +            break;
>> +         case WGL_CONTEXT_MINOR_VERSION_ARB:
>> +            minorVersion = attribList[++i];
>> +            break;
>> +         case WGL_CONTEXT_LAYER_PLANE_ARB:
>> +            layerPlane = attribList[++i];
>> +            break;
>> +         case WGL_CONTEXT_FLAGS_ARB:
>> +            contextFlags = attribList[++i];
>> +            break;
>> +         case WGL_CONTEXT_PROFILE_MASK_ARB:
>> +            profileMask = attribList[++i];
>> +            break;
>> +         case 0:
>> +            /* end of list */
>> +            done = TRUE;
>> +            break;
>> +         default:
>> +            /* bad attribute */
>> +            SetLastError(ERROR_INVALID_PARAMETER);
>> +            return NULL;
>> +         }
>> +      }
>> +   }
>> +
>> +   /* check version (generate ERROR_INVALID_VERSION_ARB if bad) */
>> +   switch (majorVersion) {
>> +   case 1:
>> +      if (minorVersion < 0 || minorVersion > 5) {
>> +         SetLastError(ERROR_INVALID_VERSION_ARB);
>> +         return NULL;
>> +      }
>> +      break;
>> +   case 2:
>> +      if (minorVersion < 0 || minorVersion > 1) {
>> +         SetLastError(ERROR_INVALID_VERSION_ARB);
>> +         return NULL;
>> +      }
>> +      break;
>> +   case 3:
>> +      if (minorVersion < 0 || minorVersion > 3) {
>> +         SetLastError(ERROR_INVALID_VERSION_ARB);
>> +         return NULL;
>> +      }
>> +      break;
>> +   case 4:
>> +      if (minorVersion < 0 || minorVersion > 2) {
>> +         SetLastError(ERROR_INVALID_VERSION_ARB);
>> +         return NULL;
>> +      }
>> +      break;
>> +   default:
>> +      return NULL;
>> +   }
>> +
>> +   if ((contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
>> majorVersion < 3) {
>> +      SetLastError(ERROR_INVALID_VERSION_ARB);
>> +      return NULL;
>> +   }
>> +
>> +   /* check profileMask */
>> +   if (profileMask != WGL_CONTEXT_CORE_PROFILE_BIT_ARB &&
>> +       profileMask != WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
>> +      SetLastError(ERROR_INVALID_PROFILE_ARB);
>> +      return NULL;
>> +   }
>> +
>> +   return (HGLRC) stw_create_context_attribs( hDC, layerPlane,
>> (DHGLRC)(UINT_PTR)hShareContext,
>> +                                              majorVersion,
>> minorVersion, contextFlags, profileMask );
>> +}
>> diff --git a/src/gallium/state_trackers/wgl/stw_getprocaddress.c
>> b/src/gallium/state_trackers/wgl/stw_getprocaddress.c
>> index b0aef94..a1df44c 100644
>> --- a/src/gallium/state_trackers/wgl/stw_getprocaddress.c
>> +++ b/src/gallium/state_trackers/wgl/stw_getprocaddress.c
>> @@ -73,6 +73,9 @@ static const struct stw_extension_entry
>> stw_extension_entries[] = {
>>     STW_EXTENSION_ENTRY( wglGetGalliumScreenMESA ),
>>     STW_EXTENSION_ENTRY( wglCreateGalliumContextMESA ),
>>
>> +   /* WGL_ARB_create_context */
>> +   STW_EXTENSION_ENTRY( wglCreateContextAttribsARB ),
>> +
>>     { NULL, NULL }
>>  };
>>
>> --
>> 1.7.7.msysgit.1
>>
>> On Wed, Oct 19, 2011 at 11:51 PM, Jose Fonseca <jfonseca at vmware.com>
>> wrote:
>> > ----- Original Message -----
>> >> ---
>> >>  src/gallium/state_trackers/wgl/SConscript          |    1 +
>> >>  src/gallium/state_trackers/wgl/stw_context.c       |   39
>> >>  ++++++++++++++++++--
>> >>  .../state_trackers/wgl/stw_getprocaddress.c        |    3 ++
>> >>  src/gallium/state_trackers/wgl/stw_icd.h           |    8 ++++
>> >>  4 files changed, 48 insertions(+), 3 deletions(-)
>> >>
>> >> diff --git a/src/gallium/state_trackers/wgl/SConscript
>> >> b/src/gallium/state_trackers/wgl/SConscript
>> >> index 7cb953b..1014b45 100644
>> >> --- a/src/gallium/state_trackers/wgl/SConscript
>> >> +++ b/src/gallium/state_trackers/wgl/SConscript
>> >> @@ -22,6 +22,7 @@ if not env['gles']:
>> >>  sources = [
>> >>      'stw_context.c',
>> >>      'stw_device.c',
>> >> +    'stw_ext_context.c',
>> >
>> > The file "stw_ext_context.c" was not included in the patch. Please
>> > add it and resend.
>> >
>> >>      'stw_ext_extensionsstring.c',
>> >>      'stw_ext_gallium.c',
>> >>      'stw_ext_pbuffer.c',
>> >> diff --git a/src/gallium/state_trackers/wgl/stw_context.c
>> >> b/src/gallium/state_trackers/wgl/stw_context.c
>> >> index c2839fe..875d713 100644
>> >> --- a/src/gallium/state_trackers/wgl/stw_context.c
>> >> +++ b/src/gallium/state_trackers/wgl/stw_context.c
>> >> @@ -27,6 +27,11 @@
>> >>
>> >>  #include <windows.h>
>> >>
>> >> +#define WGL_WGLEXT_PROTOTYPES
>> >> +
>> >> +#include <GL/gl.h>
>> >> +#include <GL/wglext.h>
>> >> +
>> >>  #include "pipe/p_compiler.h"
>> >>  #include "pipe/p_context.h"
>> >>  #include "pipe/p_state.h"
>> >> @@ -121,11 +126,23 @@ DrvCreateLayerContext(
>> >>     HDC hdc,
>> >>     INT iLayerPlane )
>> >>  {
>> >> +   return DrvCreateContextAttribs(hdc, iLayerPlane, 0, 1, 0, 0,
>> >> WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB);
>> >> +}
>> >> +
>> >> +DHGLRC APIENTRY
>> >> +DrvCreateContextAttribs(
>> >> +   HDC hdc,
>> >> +   INT iLayerPlane,
>> >> +   DHGLRC hShareContext,
>> >> +   int majorVersion, int minorVersion,
>> >> +   int contextFlags, int profileMask)
>> >> +{
>> >
>> > The Drv* prefix is for entrypoints that are part of the ICD. But
>> > don't think that a "DrvCreateContextAttribs" has been defined by
>> > Microsoft as part of the ICD.
>> >
>> > If so, please use a different funtion name, e.g.,
>> > stw_create_context_attribs, and declare in it stw_context.h,
>> > instead of stw_icd.h
>> >
>> >
>> > Jose
>> >
>>
>


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