From: Dave Airlie <airlied@redhat.com>
Date: Tue, 1 Sep 2015 05:44:46 +0000 (+1000)
Subject: texcompress_s3tc/fxt1: fix stride checks (v1.1)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b4a70401f52e5d7e08c94715b250ea1de8f63d15;p=mesa.git

texcompress_s3tc/fxt1: fix stride checks (v1.1)

The fastpath currently checks the RowLength != width, but
if you have a RowLength of 7, and Alignment of 4, then
that shouldn't match.

align the rowlength to the pack alignment before comparing.

This fixes compressed cases in CTS packed_pixels_pixelstore
test when SKIP_PIXELS is enabled, which causes row length
to get set.

v1.1: add fxt1 fix (Iago)

Cc: "11.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/src/mesa/main/texcompress_fxt1.c b/src/mesa/main/texcompress_fxt1.c
index f06f048820d..d605e255962 100644
--- a/src/mesa/main/texcompress_fxt1.c
+++ b/src/mesa/main/texcompress_fxt1.c
@@ -65,7 +65,7 @@ _mesa_texstore_rgb_fxt1(TEXSTORE_PARAMS)
    if (srcFormat != GL_RGB ||
        srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
-       srcPacking->RowLength != srcWidth ||
+       ALIGN(srcPacking->RowLength, srcPacking->Alignment) != srcWidth ||
        srcPacking->SwapBytes) {
       /* convert image to RGB/GLubyte */
       GLubyte *tempImageSlices[1];
diff --git a/src/mesa/main/texcompress_s3tc.c b/src/mesa/main/texcompress_s3tc.c
index 7ce3cb88ec7..6cfe06a9910 100644
--- a/src/mesa/main/texcompress_s3tc.c
+++ b/src/mesa/main/texcompress_s3tc.c
@@ -130,7 +130,7 @@ _mesa_texstore_rgb_dxt1(TEXSTORE_PARAMS)
    if (srcFormat != GL_RGB ||
        srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
-       srcPacking->RowLength != srcWidth ||
+       ALIGN(srcPacking->RowLength, srcPacking->Alignment) != srcWidth ||
        srcPacking->SwapBytes) {
       /* convert image to RGB/GLubyte */
       GLubyte *tempImageSlices[1];
@@ -187,7 +187,7 @@ _mesa_texstore_rgba_dxt1(TEXSTORE_PARAMS)
    if (srcFormat != GL_RGBA ||
        srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
-       srcPacking->RowLength != srcWidth ||
+       ALIGN(srcPacking->RowLength, srcPacking->Alignment) != srcWidth ||
        srcPacking->SwapBytes) {
       /* convert image to RGBA/GLubyte */
       GLubyte *tempImageSlices[1];
@@ -244,7 +244,7 @@ _mesa_texstore_rgba_dxt3(TEXSTORE_PARAMS)
    if (srcFormat != GL_RGBA ||
        srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
-       srcPacking->RowLength != srcWidth ||
+       ALIGN(srcPacking->RowLength, srcPacking->Alignment) != srcWidth ||
        srcPacking->SwapBytes) {
       /* convert image to RGBA/GLubyte */
       GLubyte *tempImageSlices[1];
@@ -300,7 +300,7 @@ _mesa_texstore_rgba_dxt5(TEXSTORE_PARAMS)
    if (srcFormat != GL_RGBA ||
        srcType != GL_UNSIGNED_BYTE ||
        ctx->_ImageTransferState ||
-       srcPacking->RowLength != srcWidth ||
+       ALIGN(srcPacking->RowLength, srcPacking->Alignment) != srcWidth ||
        srcPacking->SwapBytes) {
       /* convert image to RGBA/GLubyte */
       GLubyte *tempImageSlices[1];