From 93b6e8aeac8ee410ee49cecd28a785efe5c2b1e3 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Thu, 9 Aug 2007 11:19:09 +0100
Subject: [PATCH] Tweaks to state emit, acheives first hw triangles from a pipe
 driver.

---
 src/mesa/pipe/i915simple/Makefile             |  1 +
 src/mesa/pipe/i915simple/i915_batch.h         |  2 +-
 src/mesa/pipe/i915simple/i915_state_emit.c    | 24 +++++++++++++------
 .../pipe/i915simple/i915_state_fragprog.c     |  2 +-
 4 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/src/mesa/pipe/i915simple/Makefile b/src/mesa/pipe/i915simple/Makefile
index f8b14220fbc..93d9c6cf012 100644
--- a/src/mesa/pipe/i915simple/Makefile
+++ b/src/mesa/pipe/i915simple/Makefile
@@ -12,6 +12,7 @@ DRIVER_SOURCES = \
 	i915_context.c \
 	i915_context.c \
 	i915_debug.c \
+	i915_debug_fp.c \
 	i915_regions.c \
 	i915_state.c \
 	i915_state_derived.c \
diff --git a/src/mesa/pipe/i915simple/i915_batch.h b/src/mesa/pipe/i915simple/i915_batch.h
index b4ca8c38da7..8a35ff6a3aa 100644
--- a/src/mesa/pipe/i915simple/i915_batch.h
+++ b/src/mesa/pipe/i915simple/i915_batch.h
@@ -45,7 +45,7 @@
 #define ADVANCE_BATCH()
 
 #define FLUSH_BATCH() do { 					\
-/*   i915_dump_batchbuffer( i915, i915->batch_start, BEGIN_BATCH(0, 0) ); */	\
+   i915_dump_batchbuffer( i915, i915->batch_start, BEGIN_BATCH(0, 0) );	\
    i915->winsys->batch_flush( i915->winsys );				\
    i915->batch_start = BEGIN_BATCH(0, 0);				\
 } while (0)
diff --git a/src/mesa/pipe/i915simple/i915_state_emit.c b/src/mesa/pipe/i915simple/i915_state_emit.c
index 4aa7e28a867..aeb2d6753f2 100644
--- a/src/mesa/pipe/i915simple/i915_state_emit.c
+++ b/src/mesa/pipe/i915simple/i915_state_emit.c
@@ -112,7 +112,7 @@ i915_emit_hardware_state(struct i915_context *i915 )
    /* Need to initialize this to zero.
     */
    {
-      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(3) | (1));
+      OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(3) | (0));
       OUT_BATCH(0);
    }
 
@@ -138,6 +138,7 @@ i915_emit_hardware_state(struct i915_context *i915 )
    {
       /* Don't support twosided stencil yet */
       OUT_BATCH(_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_TWO_SIDE | 0);
+      OUT_BATCH(0);
    }
 
 
@@ -150,11 +151,10 @@ i915_emit_hardware_state(struct i915_context *i915 )
 		I1_LOAD_S(6) | 
 		(3));
       
-      OUT_BATCH(0);
-      OUT_BATCH(S4_VFMT_XYZ | S4_VFMT_COLOR);
-      OUT_BATCH(0);
-      OUT_BATCH(S6_COLOR_WRITE_ENABLE |
-		(2 << S6_TRISTRIP_PV_SHIFT));
+      OUT_BATCH(0xffffffff);
+      OUT_BATCH(0x00902440); //      OUT_BATCH(S4_VFMT_XYZ | S4_VFMT_COLOR);
+      OUT_BATCH(0x00000002);
+      OUT_BATCH(0x00020216); // OUT_BATCH( S6_COLOR_WRITE_ENABLE | (2 << S6_TRISTRIP_PV_SHIFT));
    }
 
    {
@@ -167,7 +167,7 @@ i915_emit_hardware_state(struct i915_context *i915 )
 		STENCIL_WRITE_MASK(0xff));
    }
    
-   {
+   if (0) {
       OUT_BATCH(_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
 		IAB_MODIFY_ENABLE |
 		IAB_MODIFY_FUNC |
@@ -175,6 +175,16 @@ i915_emit_hardware_state(struct i915_context *i915 )
 		IAB_MODIFY_DST_FACTOR);
    }
 
+   {
+      //3DSTATE_INDEPENDENT_ALPHA_BLEND (1 dwords):
+      OUT_BATCH(0x6ba008a1);
+
+      //3DSTATE_CONSTANT_BLEND_COLOR (2 dwords):
+      OUT_BATCH(0x7d880000);
+      OUT_BATCH(0x00000000);
+   }
+
+
 
    if (i915->framebuffer.cbufs[0]) {
       struct pipe_region *cbuf_region = i915->framebuffer.cbufs[0]->region;
diff --git a/src/mesa/pipe/i915simple/i915_state_fragprog.c b/src/mesa/pipe/i915simple/i915_state_fragprog.c
index e4639bc2237..83f43befafa 100644
--- a/src/mesa/pipe/i915simple/i915_state_fragprog.c
+++ b/src/mesa/pipe/i915simple/i915_state_fragprog.c
@@ -50,7 +50,7 @@ static unsigned passthrough[] =
     A0_DEST_CHANNEL_ALL | 
     (REG_TYPE_T << A0_SRC0_TYPE_SHIFT) |
     (T_DIFFUSE << A0_SRC0_NR_SHIFT)),
-   0,
+   0x01230000,			/* .xyzw */
    0
 };
 
-- 
2.30.2