Mesa (master): dri/nouveau: allow multiple maps of surface buffers
Ben Skeggs
darktama at kemper.freedesktop.org
Wed Jan 19 05:51:02 UTC 2011
Module: Mesa
Branch: master
Commit: c73a1c18b2eb15b2e42a072222a5b166080a52ef
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=c73a1c18b2eb15b2e42a072222a5b166080a52ef
Author: Ben Skeggs <bskeggs at redhat.com>
Date: Wed Jan 19 15:51:57 2011 +1000
dri/nouveau: allow multiple maps of surface buffers
Can happen during swrast fallbacks if a buffer is somehow bound as
a render target and a texture.
Fixes gnome-shell on nv20, and gets it mostly working on nv10.
Signed-off-by: Ben Skeggs <bskeggs at redhat.com>
---
src/mesa/drivers/dri/nouveau/nouveau_texture.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_texture.c b/src/mesa/drivers/dri/nouveau/nouveau_texture.c
index 2480b1e..988208f 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_texture.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_texture.c
@@ -113,8 +113,10 @@ nouveau_teximage_map(struct gl_context *ctx, struct gl_texture_image *ti,
if (access & GL_MAP_WRITE_BIT)
flags |= NOUVEAU_BO_WR;
- ret = nouveau_bo_map(s->bo, flags);
- assert(!ret);
+ if (!s->bo->map) {
+ ret = nouveau_bo_map(s->bo, flags);
+ assert(!ret);
+ }
ti->Data = s->bo->map + y * s->pitch + x * s->cpp;
}
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