Mesa (master): i965: Implement ARB_texture_mirror_clamp_to_edge.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: 2d3282188e3f95c0a81aca01f01e0c4424127320
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2d3282188e3f95c0a81aca01f01e0c4424127320

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Sun Oct 20 20:19:53 2013 -0700

i965: Implement ARB_texture_mirror_clamp_to_edge.

This passes Piglit's texwrap tests.

v2: Remove _EXT suffix.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Matt Turner <mattst88 at gmail.com>
Reviewed-by: Rico Schüller <kgbricola at web.de>

---

 src/mesa/drivers/dri/i965/brw_wm_sampler_state.c |    2 ++
 src/mesa/drivers/dri/i965/intel_extensions.c     |    1 +
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c b/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c
index b716d61..ab83419 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c
@@ -71,6 +71,8 @@ translate_wrap_mode(GLenum wrap, bool using_nearest)
       return BRW_TEXCOORDMODE_CLAMP_BORDER;
    case GL_MIRRORED_REPEAT: 
       return BRW_TEXCOORDMODE_MIRROR;
+   case GL_MIRROR_CLAMP_TO_EDGE:
+      return BRW_TEXCOORDMODE_MIRROR_ONCE;
    default: 
       return BRW_TEXCOORDMODE_WRAP;
    }
diff --git a/src/mesa/drivers/dri/i965/intel_extensions.c b/src/mesa/drivers/dri/i965/intel_extensions.c
index 803d090..87cc87d 100644
--- a/src/mesa/drivers/dri/i965/intel_extensions.c
+++ b/src/mesa/drivers/dri/i965/intel_extensions.c
@@ -75,6 +75,7 @@ intelInitExtensions(struct gl_context *ctx)
    ctx->Extensions.ARB_texture_env_crossbar = true;
    ctx->Extensions.ARB_texture_env_dot3 = true;
    ctx->Extensions.ARB_texture_float = true;
+   ctx->Extensions.ARB_texture_mirror_clamp_to_edge = true;
    ctx->Extensions.ARB_texture_non_power_of_two = true;
    ctx->Extensions.ARB_texture_rg = true;
    ctx->Extensions.ARB_texture_rgb10_a2ui = true;