From 5c58618406bd5b4ee0bc5121f562560702ebbf98 Mon Sep 17 00:00:00 2001
From: Corbin Simpson <MostAwesomeDude@gmail.com>
Date: Tue, 25 May 2010 21:45:38 -0700
Subject: [PATCH] r300g: Old MSAA code from before gallium-msaa.

---
 src/gallium/drivers/r300/r300_context.h         | 2 ++
 src/gallium/drivers/r300/r300_emit.c            | 7 +++++++
 src/gallium/drivers/r300/r300_state.c           | 7 ++++++-
 src/gallium/drivers/r300/r300_state_invariant.c | 8 --------
 4 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 90de53e2df3..0d7ff2e061c 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -103,6 +103,8 @@ struct r300_rs_state {
     struct pipe_rasterizer_state rs_draw;
 
     uint32_t vap_control_status;    /* R300_VAP_CNTL_STATUS: 0x2140 */
+    uint32_t multisample_position_0;/* R300_GB_MSPOS0: 0x4010 */
+    uint32_t multisample_position_1;/* R300_GB_MSPOS1: 0x4014 */
     uint32_t antialiasing_config;   /* R300_GB_AA_CONFIG: 0x4020 */
     uint32_t point_size;            /* R300_GA_POINT_SIZE: 0x421c */
     uint32_t point_minmax;          /* R300_GA_POINT_MINMAX: 0x4230 */
diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 64d66e421f2..aae2e49dca8 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -484,6 +484,13 @@ void r300_emit_rs_state(struct r300_context* r300, unsigned size, void* state)
 
     OUT_CS_REG(R300_GB_AA_CONFIG, rs->antialiasing_config);
 
+    OUT_CS_REG(R300_VAP_CNTL_STATUS, rs->vap_control_status);
+    if (r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0)) {
+        OUT_CS_REG_SEQ(R300_GB_MSPOS0, 2);
+        OUT_CS(rs->multisample_position_0);
+        OUT_CS(rs->multisample_position_1);
+    }
+    OUT_CS_REG(R300_GB_AA_CONFIG, rs->antialiasing_config);
     OUT_CS_REG(R300_GA_POINT_SIZE, rs->point_size);
     OUT_CS_REG_SEQ(R300_GA_POINT_MINMAX, 2);
     OUT_CS(rs->point_minmax);
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 0772c1fa537..815f969e5ec 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -950,6 +950,11 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
         }
     }
 
+    if (state->gl_rasterization_rules) {
+        rs->multisample_position_0 = 0x66666666;
+        rs->multisample_position_1 = 0x6666666;
+    }
+
     return (void*)rs;
 }
 
@@ -979,7 +984,7 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
     }
 
     UPDATE_STATE(state, r300->rs_state);
-    r300->rs_state.size = 27 + (r300->polygon_offset_enabled ? 5 : 0);
+    r300->rs_state.size = 31 + (r300->polygon_offset_enabled ? 5 : 0);
 
     if (last_sprite_coord_enable != r300->sprite_coord_enable ||
         last_two_sided_color != r300->two_sided_color) {
diff --git a/src/gallium/drivers/r300/r300_state_invariant.c b/src/gallium/drivers/r300/r300_state_invariant.c
index b3181a37ea1..e67a0ae2444 100644
--- a/src/gallium/drivers/r300/r300_state_invariant.c
+++ b/src/gallium/drivers/r300/r300_state_invariant.c
@@ -38,14 +38,6 @@ void r300_emit_invariant_state(struct r300_context* r300,
 {
     CS_LOCALS(r300);
 
-    if (r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0)) {
-        /* Subpixel multisampling for AA. */
-        BEGIN_CS(4);
-        OUT_CS_REG(R300_GB_MSPOS0, 0x66666666);
-        OUT_CS_REG(R300_GB_MSPOS1, 0x6666666);
-        END_CS;
-    }
-
     BEGIN_CS(12 + (r300->screen->caps.has_tcl ? 2 : 0));
 
     /*** Graphics Backend (GB) ***/
-- 
2.30.2