intel: Refactor creation of hiz and mcs miptrees

Move the logic for creating the ancillary hiz and mcs miptress for winsys
and non-texture renderbuffers from intel_alloc_renderbuffer_storage to
intel_miptree_create_for_renderbuffer. Let's try to isolate complex
miptree logic to intel_mipmap_tree.c.

Without this refactor, code duplication would be required along the
intel_process_dri2_buffer codepath in order to create the mcs miptree.

Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
Signed-off-by: Chad Versace <[email protected]>

2 files changed, 19 insertions, 16 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_fbo.c b/src/mesa/drivers/dri/intel/intel_fbo.c
index cea57e6d31d..e6e64080bf2 100644
--- a/src/mesa/drivers/dri/intel/intel_fbo.c
+++ b/src/mesa/drivers/dri/intel/intel_fbo.c
@@ -274,22 +274,6 @@ intel_alloc_renderbuffer_storage(struct gl_context * ctx, struct gl_renderbuffer
    if (!irb->mt)
       return false;
 
-   if (intel->vtbl.is_hiz_depth_format(intel, rb->Format)) {
-      bool ok = intel_miptree_alloc_hiz(intel, irb->mt, rb->NumSamples);
-      if (!ok) {
-	 intel_miptree_release(&irb->mt);
-	 return false;
-      }
-   }
-
-   if (irb->mt->msaa_layout == INTEL_MSAA_LAYOUT_CMS) {
-      bool ok = intel_miptree_alloc_mcs(intel, irb->mt, rb->NumSamples);
-      if (!ok) {
-         intel_miptree_release(&irb->mt);
-         return false;
-      }
-   }
-
    return true;
 }
 
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 9f349d00a5f..b6ecbca9162 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -334,6 +334,7 @@ intel_miptree_create_for_renderbuffer(struct intel_context *intel,
    struct intel_mipmap_tree *mt;
    uint32_t depth = 1;
    enum intel_msaa_layout msaa_layout = INTEL_MSAA_LAYOUT_NONE;
+   bool ok;
 
    if (num_samples > 1) {
       /* Adjust width/height/depth for MSAA */
@@ -397,8 +398,26 @@ intel_miptree_create_for_renderbuffer(struct intel_context *intel,
    mt = intel_miptree_create(intel, GL_TEXTURE_2D, format, 0, 0,
 			     width, height, depth, true, num_samples,
                              msaa_layout);
+   if (!mt)
+      goto fail;
+
+   if (intel->vtbl.is_hiz_depth_format(intel, format)) {
+      ok = intel_miptree_alloc_hiz(intel, mt, num_samples);
+      if (!ok)
+         goto fail;
+   }
+
+   if (mt->msaa_layout == INTEL_MSAA_LAYOUT_CMS) {
+      ok = intel_miptree_alloc_mcs(intel, mt, num_samples);
+      if (!ok)
+         goto fail;
+   }
 
    return mt;
+
+fail:
+   intel_miptree_release(&mt);
+   return NULL;
 }
 
 void