glx: Implement GLX_ARB_context_flush_control

Reviewed-by: Adam Jackson <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Signed-off-by: Neil Roberts <[email protected]>

1 files changed, 16 insertions, 2 deletions

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index ae8cb11ef8f..e67a15f9dab 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -247,7 +247,8 @@ dri2_create_context_attribs(struct glx_screen *base,
    uint32_t flags;
    unsigned api;
    int reset;
-   uint32_t ctx_attribs[2 * 5];
+   int release;
+   uint32_t ctx_attribs[2 * 6];
    unsigned num_ctx_attribs = 0;
 
    if (psc->dri2->base.version < 3) {
@@ -259,7 +260,7 @@ dri2_create_context_attribs(struct glx_screen *base,
     */
    if (!dri2_convert_glx_attribs(num_attribs, attribs,
                                  &major_ver, &minor_ver, &renderType, &flags,
-                                 &api, &reset, error))
+                                 &api, &reset, &release, error))
       goto error_exit;
 
    /* Check the renderType value */
@@ -294,6 +295,11 @@ dri2_create_context_attribs(struct glx_screen *base,
       ctx_attribs[num_ctx_attribs++] = reset;
    }
 
+   if (release != __DRI_CTX_RELEASE_BEHAVIOR_FLUSH) {
+      ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
+      ctx_attribs[num_ctx_attribs++] = release;
+   }
+
    if (flags != 0) {
       ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
 
@@ -1170,6 +1176,14 @@ dri2BindExtensions(struct dri2_screen *psc, struct glx_display * priv,
 
       if (strcmp(extensions[i]->name, __DRI2_INTEROP) == 0)
 	 psc->interop = (__DRI2interopExtension*)extensions[i];
+
+      /* DRI2 version 3 is also required because
+       * GLX_ARB_control_flush_control requires GLX_ARB_create_context.
+       */
+      if (psc->dri2->base.version >= 3
+          && strcmp(extensions[i]->name, __DRI2_FLUSH_CONTROL) == 0)
+         __glXEnableDirectExtension(&psc->base,
+                                    "GLX_ARB_context_flush_control");
    }
 }