intel: Enable GL_OES_compressed_ETC1_RGB8_texture

Enable it for all hardware.

No current hardware supports ETC1, so this patch implements it by
translating the ETC1 data to RGBX data during the call to
glCompressedTexImage2D(). For details, see the doxygen for
intel_mipmap_tree::wraps_etc1.

Passes the Piglit test spec/OES_compressed_ETC1_RGB8_texture/miptree and
the ETC1 test in the GLES2 conformance suite.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
index 953b98389c3..844125dc8a5 100755
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -91,6 +91,7 @@ intelInitExtensions(struct gl_context *ctx)
    ctx->Extensions.OES_EGL_image = true;
 #endif
    ctx->Extensions.OES_draw_texture = true;
+   ctx->Extensions.OES_compressed_ETC1_RGB8_texture = true;
 
    if (intel->gen >= 6)
       ctx->Const.GLSLVersion = 130;