[Mesa-dev] [PATCH 14/30] i965/miptree: Add support for window system images to create_for_dri_image

[Jason Ekstrand]

We want to start using create_for_dri_image for all miptrees created
from __DRIimage, including those which come from a window system.  In
order to allow for fast clears to still work on window system buffers,
we need to allow for creating aux surfaces.
---
 src/mesa/drivers/dri/i965/intel_fbo.c         |  2 +-
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 16 +++++++++++++---
 src/mesa/drivers/dri/i965/intel_mipmap_tree.h |  3 ++-
 src/mesa/drivers/dri/i965/intel_tex_image.c   |  2 +-
 4 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/intel_fbo.c b/src/mesa/drivers/dri/i965/intel_fbo.c
index 130eab1..db4cfee 100644
--- a/src/mesa/drivers/dri/i965/intel_fbo.c
+++ b/src/mesa/drivers/dri/i965/intel_fbo.c
@@ -363,7 +363,7 @@ intel_image_target_renderbuffer_storage(struct gl_context *ctx,
     * content.
     */
    irb->mt = intel_miptree_create_for_dri_image(brw, image, GL_TEXTURE_2D,
-                                                image->format);
+                                                image->format, false);
    if (!irb->mt)
       return;
 
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 7b4d431..83c99ed 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -901,7 +901,8 @@ miptree_create_for_planar_image(struct brw_context *brw,
 struct intel_mipmap_tree *
 intel_miptree_create_for_dri_image(struct brw_context *brw,
                                    __DRIimage *image, GLenum target,
-                                   mesa_format format)
+                                   mesa_format format,
+                                   bool is_winsys_image)
 {
    if (image->planar_format && image->planar_format->nplanes > 0)
       return miptree_create_for_planar_image(brw, image, target);
@@ -909,6 +910,16 @@ intel_miptree_create_for_dri_image(struct brw_context *brw,
    if (!brw->ctx.TextureFormatSupported[format])
       return NULL;
 
+   /* If this image comes in from a window system, we have different
+    * requirements than if it comes in via an EGL import operation.  Window
+    * system images can use any form of auxiliary compression we wish because
+    * they get "flushed" before being handed off to the window system and we
+    * have the opportunity to do resolves.  Window system buffers also may be
+    * used for scanout so we need to flag that appropriately.
+    */
+   const uint32_t mt_layout_flags =
+      is_winsys_image ? MIPTREE_LAYOUT_FOR_SCANOUT : MIPTREE_LAYOUT_DISABLE_AUX;
+
    /* Disable creation of the texture's aux buffers because the driver exposes
     * no EGL API to manage them. That is, there is no API for resolving the aux
     * buffer's content to the main buffer nor for invalidating the aux buffer's
@@ -917,8 +928,7 @@ intel_miptree_create_for_dri_image(struct brw_context *brw,
    struct intel_mipmap_tree *mt =
       intel_miptree_create_for_bo(brw, image->bo, format,
                                   image->offset, image->width, image->height, 1,
-                                  image->pitch,
-                                  MIPTREE_LAYOUT_DISABLE_AUX);
+                                  image->pitch, mt_layout_flags);
    if (mt == NULL)
       return NULL;
 
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
index 8044a1b..2a4cda2 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
@@ -700,7 +700,8 @@ struct intel_mipmap_tree *
 intel_miptree_create_for_dri_image(struct brw_context *brw,
                                    __DRIimage *image,
                                    GLenum target,
-                                   mesa_format format);
+                                   mesa_format format,
+                                   bool is_winsys_image);
 
 bool
 intel_update_winsys_renderbuffer_miptree(struct brw_context *intel,
diff --git a/src/mesa/drivers/dri/i965/intel_tex_image.c b/src/mesa/drivers/dri/i965/intel_tex_image.c
index 76a6e13..53e1087 100644
--- a/src/mesa/drivers/dri/i965/intel_tex_image.c
+++ b/src/mesa/drivers/dri/i965/intel_tex_image.c
@@ -344,7 +344,7 @@ intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
    }
 
    mt = intel_miptree_create_for_dri_image(brw, image, target,
-                                           image->format);
+                                           image->format, false);
    if (mt == NULL)
       return;
 
-- 
2.5.0.400.gff86faf