[Mesa-dev] [PATCH 1/4] dri: Fix __DRIconfig reporting of __DRI_ATTRIB_SWAP_METHOD

[Thomas Hellstrom]

The attribMap had two entries for this attribute, and
driGetConfigAttribIndex didn't return a proper value for this attribute.
Fix this, and also make sure we return SWAP_UNDEFINED for single-buffer
configs as required by the GLX_OML_swap_method spec.

Finally bump the dri core extension version to 2, indicating that we
correctly report __DRI_ATTRIB_SWAP_METHOD.

Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
---
 include/GL/internal/dri_interface.h    | 5 ++++-
 src/mesa/drivers/dri/common/dri_util.c | 2 +-
 src/mesa/drivers/dri/common/utils.c    | 8 ++------
 3 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h
index f676ac5..5e8fce7 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -726,9 +726,12 @@ struct __DRIuseInvalidateExtensionRec {
 
 /**
  * This extension defines the core DRI functionality.
+ *
+ * Version >= 2 indicates that getConfigAttrib with __DRI_ATTRIB_SWAP_METHOD
+ * returns a reliable value.
  */
 #define __DRI_CORE "DRI_Core"
-#define __DRI_CORE_VERSION 1
+#define __DRI_CORE_VERSION 2
 
 struct __DRIcoreExtensionRec {
     __DRIextension base;
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index 39ecaf0..31a3040 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -767,7 +767,7 @@ driSwapBuffers(__DRIdrawable *pdp)
 
 /** Core interface */
 const __DRIcoreExtension driCoreExtension = {
-    .base = { __DRI_CORE, 1 },
+    .base = { __DRI_CORE, 2 },
 
     .createNewScreen            = NULL,
     .destroyScreen              = driDestroyScreen,
diff --git a/src/mesa/drivers/dri/common/utils.c b/src/mesa/drivers/dri/common/utils.c
index c37d446..f3ea61e 100644
--- a/src/mesa/drivers/dri/common/utils.c
+++ b/src/mesa/drivers/dri/common/utils.c
@@ -284,8 +284,9 @@ driCreateConfigs(mesa_format format,
 		    modes->transparentIndex = GLX_DONT_CARE;
 		    modes->rgbMode = GL_TRUE;
 
-		    if ( db_modes[i] == GLX_NONE ) {
+		    if ( db_modes[i] == GLX_NONE) {
 		    	modes->doubleBufferMode = GL_FALSE;
+                        modes->swapMethod = GLX_SWAP_UNDEFINED_OML;
 		    }
 		    else {
 		    	modes->doubleBufferMode = GL_TRUE;
@@ -403,7 +404,6 @@ static const struct { unsigned int attrib, offset; } attribMap[] = {
      * so the iterator includes them though.*/
     __ATTRIB(__DRI_ATTRIB_RENDER_TYPE,			level),
     __ATTRIB(__DRI_ATTRIB_CONFIG_CAVEAT,		level),
-    __ATTRIB(__DRI_ATTRIB_SWAP_METHOD,			level)
 };
 
 
@@ -428,10 +428,6 @@ driGetConfigAttribIndex(const __DRIconfig *config,
 	else
 	    *value = 0;
 	break;
-    case __DRI_ATTRIB_SWAP_METHOD:
-        /* XXX no return value??? */
-	break;
-
     default:
         /* any other int-sized field */
 	*value = *(unsigned int *)
-- 
2.7.4