[Mesa-dev] [PATCH 1/6] i965/fs: Don't allocate the old backend's compile structs for our compile.

[Eric Anholt]

This saves some 35MB when the program only uses GLSL shaders.
---
 src/mesa/drivers/dri/i965/brw_wm.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c
index b0dfdd5..d13ac61 100644
--- a/src/mesa/drivers/dri/i965/brw_wm.c
+++ b/src/mesa/drivers/dri/i965/brw_wm.c
@@ -206,10 +206,6 @@ bool do_wm_prog(struct brw_context *brw,
           */
          return false;
       }
-      c->instruction = rzalloc_array(c, struct brw_wm_instruction, BRW_WM_MAX_INSN);
-      c->prog_instructions = rzalloc_array(c, struct prog_instruction, BRW_WM_MAX_INSN);
-      c->vreg = rzalloc_array(c, struct brw_wm_value, BRW_WM_MAX_VREG);
-      c->refs = rzalloc_array(c, struct brw_wm_ref, BRW_WM_MAX_REF);
    } else {
       void *instruction = c->instruction;
       void *prog_instructions = c->prog_instructions;
@@ -232,6 +228,13 @@ bool do_wm_prog(struct brw_context *brw,
       if (!brw_wm_fs_emit(brw, c, prog))
 	 return false;
    } else {
+      if (!c->instruction) {
+	 c->instruction = rzalloc_array(c, struct brw_wm_instruction, BRW_WM_MAX_INSN);
+	 c->prog_instructions = rzalloc_array(c, struct prog_instruction, BRW_WM_MAX_INSN);
+	 c->vreg = rzalloc_array(c, struct brw_wm_value, BRW_WM_MAX_VREG);
+	 c->refs = rzalloc_array(c, struct brw_wm_ref, BRW_WM_MAX_REF);
+      }
+
       /* Fallback for fixed function and ARB_fp shaders. */
       c->dispatch_width = 16;
       brw_wm_payload_setup(brw, c);
-- 
1.7.5.4