egl: Implement EGL_KHR_context_flush_control

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

2 files changed, 11 insertions, 1 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 44cddfd0ed5..b486be74873 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -92,7 +92,7 @@
 #define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
 #endif
 
-#define NUM_ATTRIBS 10
+#define NUM_ATTRIBS 12
 
 static void
 dri_set_background_context(void *loaderPrivate)
@@ -457,6 +457,7 @@ static const struct dri2_extension_match optional_core_extensions[] = {
    { __DRI2_RENDERER_QUERY, 1, offsetof(struct dri2_egl_display, rendererQuery) },
    { __DRI2_INTEROP, 1, offsetof(struct dri2_egl_display, interop) },
    { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
+   { __DRI2_FLUSH_CONTROL, 1, offsetof(struct dri2_egl_display, flush_control) },
    { NULL, 0, 0 }
 };
 
@@ -766,6 +767,9 @@ dri2_setup_screen(_EGLDisplay *disp)
       }
 #endif
    }
+
+   if (dri2_dpy->flush_control)
+      disp->Extensions.KHR_context_flush_control = EGL_TRUE;
 }
 
 void
@@ -1227,6 +1231,11 @@ dri2_fill_context_attribs(struct dri2_egl_context *dri2_ctx,
       ctx_attribs[pos++] = val;
    }
 
+   if (dri2_ctx->base.ReleaseBehavior == EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR) {
+      ctx_attribs[pos++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
+      ctx_attribs[pos++] = __DRI_CTX_RELEASE_BEHAVIOR_NONE;
+   }
+
    *num_attribs = pos;
 
    return true;
diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index cd2487ab226..0ec8f44dce2 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -164,6 +164,7 @@ struct dri2_egl_display
    const __DRIdri2Extension       *dri2;
    const __DRIswrastExtension     *swrast;
    const __DRI2flushExtension     *flush;
+   const __DRI2flushControlExtension *flush_control;
    const __DRItexBufferExtension  *tex_buffer;
    const __DRIimageExtension      *image;
    const __DRIrobustnessExtension *robustness;