i965/blorp: Add INTEL_DEBUG=blorp flag.

This debug flag prints out the native GEN assembly for a blitting
shader produced using BLORP.  Hopefully this should be useful in
developing additional BLORP features.

Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Anuj Phogat <[email protected]>
Reviewed-by: Chad Versace <[email protected]>

3 files changed, 8 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
index 37524ad1a14..d4b1fda80cd 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
+++ b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
@@ -834,6 +834,12 @@ brw_blorp_blit_program::compile(struct brw_context *brw,
     * terminate the thread.
     */
    render_target_write();
+
+   if (unlikely(INTEL_DEBUG & DEBUG_BLORP)) {
+      printf("Native code for BLORP blit:\n");
+      brw_dump_compile(&func, stdout, 0, func.next_insn_offset);
+      printf("\n");
+   }
    return brw_get_program(&func, program_size);
 }
 
diff --git a/src/mesa/drivers/dri/intel/intel_context.c b/src/mesa/drivers/dri/intel/intel_context.c
index 7651b463f5c..2df70b75b47 100644
--- a/src/mesa/drivers/dri/intel/intel_context.c
+++ b/src/mesa/drivers/dri/intel/intel_context.c
@@ -490,6 +490,7 @@ static const struct dri_debug_control debug_control[] = {
    { "aub",   DEBUG_AUB },
    { "shader_time", DEBUG_SHADER_TIME },
    { "no16",  DEBUG_NO16 },
+   { "blorp", DEBUG_BLORP },
    { NULL,    0 }
 };
 
diff --git a/src/mesa/drivers/dri/intel/intel_context.h b/src/mesa/drivers/dri/intel/intel_context.h
index 5a496039c5d..2df15d4f3df 100644
--- a/src/mesa/drivers/dri/intel/intel_context.h
+++ b/src/mesa/drivers/dri/intel/intel_context.h
@@ -438,6 +438,7 @@ extern int INTEL_DEBUG;
 #define DEBUG_CLIP      0x2000000
 #define DEBUG_AUB       0x4000000
 #define DEBUG_SHADER_TIME 0x8000000
+#define DEBUG_BLORP     0x10000000
 #define DEBUG_NO16      0x20000000
 
 #ifdef HAVE_ANDROID_PLATFORM