gallivm: Code generate YUV format unpacking.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_aos.c b/src/gallium/auxiliary/gallivm/lp_bld_format_aos.c
index bec2a80..cc72a31 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_format_aos.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_format_aos.c
@@ -366,6 +366,8 @@ lp_build_pack_rgba_aos(LLVMBuilderRef builder,
 }
 
 
+
+
 /**
  * Fetch a pixel into a 4 float AoS.
  *
@@ -429,6 +431,26 @@ lp_build_fetch_rgba_aos(LLVMBuilderRef builder,
          return lp_build_unpack_rgba_aos(format_desc, &bld, packed);
       }
    }
+   else if (format_desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED) {
+      LLVMValueRef packed;
+      LLVMValueRef rgba;
+
+      ptr = LLVMBuildBitCast(builder, ptr,
+                             LLVMPointerType(LLVMInt32Type(), 0),
+                             "packed_ptr");
+
+      packed = LLVMBuildLoad(builder, ptr, "packed");
+
+      rgba = lp_build_unpack_subsampled_to_rgba_aos(builder, format_desc,
+                                                    1, packed, i, j);
+
+      lp_build_conv(builder,
+                    lp_unorm8_vec4_type(),
+                    type,
+                    &rgba, 1, &rgba, 1);
+
+      return rgba;
+   }
    else if (format_desc->fetch_rgba_float) {
       /*
        * Fallback to calling util_format_description::fetch_rgba_float.