From: Eric Anholt <eric@anholt.net>
Date: Tue, 28 Sep 2010 04:35:54 +0000 (-0700)
Subject: i965: Apply the same set of lowering passes to new FS as to Mesa IR.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1723fdb3f0004a685351d005ba0f5bfc1c2a852e;p=mesa.git

i965: Apply the same set of lowering passes to new FS as to Mesa IR.

While much of this we will want to support natively, this should make
the task of reaching the Mesa IR backend's quality easier.

Fixes:
glsl-fs-main-return.
---

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index c324be210a0..31f5bbf5871 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -141,7 +141,22 @@ brw_link_shader(GLcontext *ctx, struct gl_shader_program *prog)
 	 do {
 	    progress = false;
 
+	    progress = do_lower_jumps(shader->ir, true, true,
+				      true, /* main return */
+				      false, /* continue */
+				      false /* loops */
+				      ) || progress;
+
 	    progress = do_common_optimization(shader->ir, true, 32) || progress;
+
+	    progress = lower_noise(shader->ir) || progress;
+	    progress =
+	       lower_variable_index_to_cond_assign(shader->ir,
+						   GL_TRUE, /* input */
+						   GL_TRUE, /* output */
+						   GL_TRUE, /* temp */
+						   GL_TRUE /* uniform */
+						   ) || progress;
 	 } while (progress);
 
 	 validate_ir_tree(shader->ir);