Mesa (master): r600: work out target mask at framebuffer bind.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 2d5b5d267e1b0997ebe9fe7bcc06f6b79af48e43
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2d5b5d267e1b0997ebe9fe7bcc06f6b79af48e43

Author: Dave Airlie <airlied at redhat.com>
Date:   Mon Feb  5 13:54:23 2018 +1000

r600: work out target mask at framebuffer bind.

If we only get 1,2,3,6 framebuffers we want a sparse target mask.

Reviewed-by: Roland Scheidegger <sroland at vmware.com>
Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/gallium/drivers/r600/evergreen_state.c | 10 +++++++---
 src/gallium/drivers/r600/r600_pipe.h       |  1 +
 src/gallium/drivers/r600/r600_state.c      |  2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index f8042c21c0..4c9163c2a7 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -1436,7 +1436,7 @@ static void evergreen_set_framebuffer_state(struct pipe_context *ctx,
 	struct r600_surface *surf;
 	struct r600_texture *rtex;
 	uint32_t i, log_samples;
-
+	uint32_t target_mask = 0;
 	/* Flush TC when changing the framebuffer state, because the only
 	 * client not using TC that can change textures is the framebuffer.
 	 * Other places don't typically have to flush TC.
@@ -1463,6 +1463,8 @@ static void evergreen_set_framebuffer_state(struct pipe_context *ctx,
 		if (!surf)
 			continue;
 
+		target_mask |= (0xf << (i * 4));
+
 		rtex = (struct r600_texture*)surf->base.texture;
 
 		r600_context_add_resource_size(ctx, state->cbufs[i]->texture);
@@ -1528,7 +1530,9 @@ static void evergreen_set_framebuffer_state(struct pipe_context *ctx,
 		r600_mark_atom_dirty(rctx, &rctx->db_misc_state.atom);
 	}
 
-	if (rctx->cb_misc_state.nr_cbufs != state->nr_cbufs) {
+	if (rctx->cb_misc_state.nr_cbufs != state->nr_cbufs ||
+	    rctx->cb_misc_state.bound_cbufs_target_mask != target_mask) {
+		rctx->cb_misc_state.bound_cbufs_target_mask = target_mask;
 		rctx->cb_misc_state.nr_cbufs = state->nr_cbufs;
 		r600_mark_atom_dirty(rctx, &rctx->cb_misc_state.atom);
 	}
@@ -2025,7 +2029,7 @@ static void evergreen_emit_cb_misc_state(struct r600_context *rctx, struct r600_
 {
 	struct radeon_winsys_cs *cs = rctx->b.gfx.cs;
 	struct r600_cb_misc_state *a = (struct r600_cb_misc_state*)atom;
-	unsigned fb_colormask = (1ULL << ((unsigned)a->nr_cbufs * 4)) - 1;
+	unsigned fb_colormask = a->bound_cbufs_target_mask;
 	unsigned ps_colormask = a->ps_color_export_mask;
 	unsigned rat_colormask = evergreen_construct_rat_mask(rctx, a, a->nr_cbufs);
 	radeon_set_context_reg_seq(cs, R_028238_CB_TARGET_MASK, 2);
diff --git a/src/gallium/drivers/r600/r600_pipe.h b/src/gallium/drivers/r600/r600_pipe.h
index 9e5dc221e9..740b50aec5 100644
--- a/src/gallium/drivers/r600/r600_pipe.h
+++ b/src/gallium/drivers/r600/r600_pipe.h
@@ -152,6 +152,7 @@ struct r600_cb_misc_state {
 	unsigned cb_color_control; /* this comes from blend state */
 	unsigned blend_colormask; /* 8*4 bits for 8 RGBA colorbuffers */
 	unsigned nr_cbufs;
+	unsigned bound_cbufs_target_mask;
 	unsigned nr_ps_color_outputs;
 	unsigned ps_color_export_mask;
 	unsigned image_rat_enabled_mask;
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 6ff8037d9c..5cf99c18b6 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -1525,7 +1525,7 @@ static void r600_emit_cb_misc_state(struct r600_context *rctx, struct r600_atom
 		}
 		radeon_set_context_reg(cs, R_028808_CB_COLOR_CONTROL, a->cb_color_control);
 	} else {
-		unsigned fb_colormask = (1ULL << ((unsigned)a->nr_cbufs * 4)) - 1;
+		unsigned fb_colormask = a->bound_cbufs_target_mask;
 		unsigned ps_colormask = a->ps_color_export_mask;
 		unsigned multiwrite = a->multiwrite && a->nr_cbufs > 1;