From 3fff38f624e23ac593412fc911c11036cbf7503c Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Thu, 10 Aug 2023 16:24:08 -0500
Subject: [PATCH] gallivm: Support G8B8_G8R8_422_UNORM and B8G8_R8G8_422_UNORM

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24619>
---
 .../auxiliary/gallivm/lp_bld_format_yuv.c     | 42 +++++++++++++++++++
 .../auxiliary/gallivm/lp_bld_sample_soa.c     |  2 +
 2 files changed, 44 insertions(+)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_yuv.c b/src/gallium/auxiliary/gallivm/lp_bld_format_yuv.c
index b47972a1886..bd6091b2c7e 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_format_yuv.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_format_yuv.c
@@ -525,6 +525,42 @@ rgrb_to_rgba_aos(struct gallivm_state *gallivm,
    return rgba;
 }
 
+/**
+ * Convert from <n x i32> packed GB_GR to <4n x i8> RGBA AoS
+ */
+static LLVMValueRef
+gbgr_to_rgba_aos(struct gallivm_state *gallivm,
+                 unsigned n,
+                 LLVMValueRef packed,
+                 LLVMValueRef i)
+{
+   LLVMValueRef r, g, b;
+   LLVMValueRef rgba;
+
+   yuyv_to_yuv_soa(gallivm, n, packed, i, &g, &b, &r);
+   rgba = rgb_to_rgba_aos(gallivm, n, r, g, b);
+
+   return rgba;
+}
+
+/**
+ * Convert from <n x i32> packed BG_RG to <4n x i8> RGBA AoS
+ */
+static LLVMValueRef
+bgrg_to_rgba_aos(struct gallivm_state *gallivm,
+                 unsigned n,
+                 LLVMValueRef packed,
+                 LLVMValueRef i)
+{
+   LLVMValueRef r, g, b;
+   LLVMValueRef rgba;
+
+   uyvy_to_yuv_soa(gallivm, n, packed, i, &g, &b, &r);
+   rgba = rgb_to_rgba_aos(gallivm, n, r, g, b);
+
+   return rgba;
+}
+
 /**
  * @param n  is the number of pixels processed
  * @param packed  is a <n x i32> vector with the packed YUYV blocks
@@ -579,6 +615,12 @@ lp_build_fetch_subsampled_rgba_aos(struct gallivm_state *gallivm,
    case PIPE_FORMAT_R8G8_R8B8_UNORM:
       rgba = rgrb_to_rgba_aos(gallivm, n, packed, i);
       break;
+   case PIPE_FORMAT_G8B8_G8R8_UNORM:
+      rgba = gbgr_to_rgba_aos(gallivm, n, packed, i);
+      break;
+   case PIPE_FORMAT_B8G8_R8G8_UNORM:
+      rgba = bgrg_to_rgba_aos(gallivm, n, packed, i);
+      break;
    default:
       assert(0);
       rgba =  LLVMGetUndef(LLVMVectorType(LLVMInt8TypeInContext(gallivm->context), 4*n));
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
index d512c96fae7..28c498cd93f 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
@@ -2877,6 +2877,8 @@ lp_build_clamp_border_color(struct lp_build_sample_context *bld,
          case PIPE_FORMAT_G8R8_G8B8_UNORM:
          case PIPE_FORMAT_G8R8_B8R8_UNORM:
          case PIPE_FORMAT_R8G8_R8B8_UNORM:
+         case PIPE_FORMAT_G8B8_G8R8_UNORM:
+         case PIPE_FORMAT_B8G8_R8G8_UNORM:
          case PIPE_FORMAT_R1_UNORM: /* doesn't make sense but ah well */
             min_clamp = vec4_bld.zero;
             max_clamp = vec4_bld.one;