i965: Enable ARB_shader_precision on Gen8+.

I recently fixed a bug in the Piglit tests:
https://lists.freedesktop.org/archives/piglit/2016-May/019802.html

With that patch in place, we pass all the tests.  So, turn it on.

We could probably expose this earlier than Gen8, but the extension
says that OpenGL 4.0 is required, and all of our tests are written
against GLSL 4.00 (which is only supported on Gen8+).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/mesa/drivers/dri/i965/intel_extensions.c b/src/mesa/drivers/dri/i965/intel_extensions.c
index 362a7e558d519ebdb61fdbd8ac742dddca6756a4..cae53f29668ae8864673687268ebc5cddaae9321 100644 (file)
--- a/src/mesa/drivers/dri/i965/intel_extensions.c
+++ b/src/mesa/drivers/dri/i965/intel_extensions.c
@@ -374,6 +374,7 @@ intelInitExtensions(struct gl_context *ctx)
    }
 
    if (brw->gen >= 8) {
+      ctx->Extensions.ARB_shader_precision = true;
       ctx->Extensions.ARB_stencil_texturing = true;
       ctx->Extensions.ARB_texture_stencil8 = true;
       ctx->Extensions.ARB_gpu_shader_fp64 = true;