Mesa (8.0): meta: Avoid FBO resizing/ reallocating in decompress_texture_image

[Ian Romanick]

Module: Mesa
Branch: 8.0
Commit: d45a5fde45e30c4475a92217b582c73d8ef5f52b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d45a5fde45e30c4475a92217b582c73d8ef5f52b

Author: Anuj Phogat <anuj.phogat at gmail.com>
Date:   Mon Feb 13 10:48:45 2012 -0800

meta: Avoid FBO resizing/reallocating in decompress_texture_image

Reallocate/resize decompress FBO only if texture image width/height is
greater than existing decompress FBO width/height.

This is a candidate for stable branches.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
Reviewed-by: Brian Paul <brianp at vmware.com>
(cherry picked from commit 66bf25f1a2cc8343640cdfc4242d882bc00b9e3b)

---

 src/mesa/drivers/common/meta.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 2b994de..4dd9b29 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -3291,7 +3291,7 @@ decompress_texture_image(struct gl_context *ctx,
    }
 
    /* alloc dest surface */
-   if (width != decompress->Width || height != decompress->Height) {
+   if (width > decompress->Width || height > decompress->Height) {
       _mesa_RenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA,
                                    width, height);
       decompress->Width = width;