Mesa (gallium-no-rhw-position): util/blitter: Fix the viewport transformation for Z coordinates

[Michał Król]

Module: Mesa
Branch: gallium-no-rhw-position
Commit: ff9ddf4d39be9e36d3e1dd9e10e889efa40dfb1e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ff9ddf4d39be9e36d3e1dd9e10e889efa40dfb1e

Author: Marek Olšák <maraeo at gmail.com>
Date:   Tue Mar  2 02:37:45 2010 +0100

util/blitter: Fix the viewport transformation for Z coordinates

When clearing buffers, the depth is specified in the range [0, 1]
and should be passed through blitter "as is".

---

 src/gallium/auxiliary/util/u_blitter.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index f93c69d..0ba09d3 100644
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -320,11 +320,11 @@ static void blitter_set_rectangle(struct blitter_context_priv *ctx,
    /* viewport */
    ctx->viewport.scale[0] = 0.5f * width;
    ctx->viewport.scale[1] = 0.5f * height;
-   ctx->viewport.scale[2] = 0.5f;
+   ctx->viewport.scale[2] = 1.0f;
    ctx->viewport.scale[3] = 1.0f;
    ctx->viewport.translate[0] = 0.5f * width;
    ctx->viewport.translate[1] = 0.5f * height;
-   ctx->viewport.translate[2] = 0.5f;
+   ctx->viewport.translate[2] = 0.0f;
    ctx->viewport.translate[3] = 0.0f;
    ctx->pipe->set_viewport_state(ctx->pipe, &ctx->viewport);