From 919498e41c7fd766165db6905ca2f36449d27522 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airliedfreedesktop.org>
Date: Thu, 17 Jun 2004 13:42:45 +0000
Subject: [PATCH] Fix up texture compression mipmapping .. not sure if it fixes
 FXT1 but with S3TC patch it fixes those

---
 src/mesa/drivers/dri/i830/i830_texmem.c   | 18 ++++++++++++------
 src/mesa/drivers/dri/i830/i830_texstate.c | 10 +++++++++-
 2 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/src/mesa/drivers/dri/i830/i830_texmem.c b/src/mesa/drivers/dri/i830/i830_texmem.c
index 1a5abf5bab7..6a30b496555 100644
--- a/src/mesa/drivers/dri/i830/i830_texmem.c
+++ b/src/mesa/drivers/dri/i830/i830_texmem.c
@@ -105,17 +105,23 @@ static void i830UploadTexLevel( i830ContextPtr imesa,
    if (!image || !image->Data)
       return;
 
-   if (image->Width * image->TexFormat->TexelBytes == t->Pitch) {
+   if (image->IsCompressed) {
 	 GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[0][hwlevel].offset);
 	 GLubyte *src = (GLubyte *)image->Data;
-	 
-	 memcpy( dst, src, t->Pitch * image->Height );
+
+	 if ((t->Setup[I830_TEXREG_TM0S1] & TM0S1_MT_FORMAT_MASK)==MT_COMPRESS_FXT1)
+	   {
+	     for (j = 0 ; j < image->Height/4 ; j++, dst += (t->Pitch)) {
+	       __memcpy(dst, src, (image->Width*2) );
+	       src += image->Width*2;
+	     }
+	   }
    }
-   else if (image->IsCompressed) {
-         GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[0][hwlevel].offset);
+   else if (image->Width * image->TexFormat->TexelBytes == t->Pitch) {
+	 GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[0][hwlevel].offset);
 	 GLubyte *src = (GLubyte *)image->Data;
 	 
-	 memcpy( dst, src, image->CompressedSize );
+	 memcpy( dst, src, t->Pitch * image->Height );
    }
    else switch (image->TexFormat->TexelBytes) {
    case 1:
diff --git a/src/mesa/drivers/dri/i830/i830_texstate.c b/src/mesa/drivers/dri/i830/i830_texstate.c
index 6b8193c9246..d5440141bfe 100644
--- a/src/mesa/drivers/dri/i830/i830_texstate.c
+++ b/src/mesa/drivers/dri/i830/i830_texstate.c
@@ -159,8 +159,16 @@ static void i830SetTexImages( i830ContextPtr imesa,
 	 break;
       
       t->image[0][i].offset = total_height * pitch;
+      if (t->image[0][i].image->IsCompressed)
+	{
+	  if (t->image[0][i].image->Height > 4)
+	    total_height += t->image[0][i].image->Height/4;
+	  else
+	    total_height += 1;
+	}
+      else
+	total_height += t->image[0][i].image->Height;
       t->image[0][i].internalFormat = baseImage->Format;
-      total_height += t->image[0][i].image->Height;
    }
 
    t->Pitch = pitch;
-- 
2.30.2