From: Anuj Phogat <anuj.phogat@gmail.com>
Date: Mon, 13 Feb 2012 18:48:45 +0000 (-0800)
Subject: meta: Avoid FBO resizing/reallocating in decompress_texture_image
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=66bf25f1a2cc8343640cdfc4242d882bc00b9e3b;p=mesa.git

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@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
---

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 8f5b0360966..6c8495ddb41 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -3292,7 +3292,7 @@ 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;