From d223b316ad7feb2a29a2772392527013f3173b9a Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Mon, 16 Jul 2018 16:21:22 -0700
Subject: [PATCH] iris: NOS mechanics

---
 src/gallium/drivers/iris/iris_context.h | 17 +++++++++++++++++
 src/gallium/drivers/iris/iris_program.c | 10 ++++++++++
 src/gallium/drivers/iris/iris_state.c   |  5 +++++
 3 files changed, 32 insertions(+)

diff --git a/src/gallium/drivers/iris/iris_context.h b/src/gallium/drivers/iris/iris_context.h
index 6ea3706fdef..6bcfd1ca99a 100644
--- a/src/gallium/drivers/iris/iris_context.h
+++ b/src/gallium/drivers/iris/iris_context.h
@@ -97,6 +97,22 @@ struct blorp_params;
 #define IRIS_DIRTY_SO_DECL_LIST             (1ull << 49)
 #define IRIS_DIRTY_STREAMOUT                (1ull << 50)
 
+/**
+ * Non-orthogonal state (NOS) dependency flags.
+ *
+ * Shader programs may depend on non-orthogonal state.  These flags are
+ * used to indicate that a shader's key depends on the state provided by
+ * a certain Gallium CSO.
+ */
+enum iris_nos_dep {
+   IRIS_NOS_FRAMEBUFFER,
+   IRIS_NOS_DEPTH_STENCIL_ALPHA,
+   IRIS_NOS_RASTERIZER,
+   IRIS_NOS_BLEND,
+
+   IRIS_NOS_COUNT,
+};
+
 struct iris_depth_stencil_alpha_state;
 
 enum iris_program_cache_id {
@@ -264,6 +280,7 @@ struct iris_context {
 
    struct {
       uint64_t dirty;
+      uint64_t dirty_for_nos[IRIS_NOS_COUNT];
       unsigned num_viewports;
       unsigned sample_mask;
       struct iris_blend_state *cso_blend;
diff --git a/src/gallium/drivers/iris/iris_program.c b/src/gallium/drivers/iris/iris_program.c
index 3d3b80bf5fb..36b15cee395 100644
--- a/src/gallium/drivers/iris/iris_program.c
+++ b/src/gallium/drivers/iris/iris_program.c
@@ -42,6 +42,9 @@ get_new_program_id(struct iris_screen *screen)
 struct iris_uncompiled_shader {
    struct pipe_shader_state base;
    unsigned program_id;
+
+   /** Bitfield of (1 << IRIS_NOS_*) flags. */
+   unsigned nos;
 };
 
 // XXX: need unify_interfaces() at link time...
@@ -91,6 +94,13 @@ bind_state(struct iris_context *ice,
 
    ice->shaders.uncompiled[stage] = ish;
    ice->state.dirty |= dirty_bit;
+
+   for (int i = 0; i < IRIS_NOS_COUNT; i++) {
+      if (ish->nos & (1 << i))
+         ice->state.dirty_for_nos[i] |= dirty_bit;
+      else
+         ice->state.dirty_for_nos[i] &= ~dirty_bit;
+   }
 }
 
 static void
diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index 59562a49fed..1b7abc9f82e 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -532,6 +532,7 @@ iris_bind_blend_state(struct pipe_context *ctx, void *state)
    ice->state.cso_blend = state;
    ice->state.dirty |= IRIS_DIRTY_PS_BLEND;
    ice->state.dirty |= IRIS_DIRTY_BLEND_STATE;
+   ice->state.dirty |= ice->state.dirty_for_nos[IRIS_NOS_BLEND];
 }
 
 struct iris_depth_stencil_alpha_state {
@@ -603,6 +604,7 @@ iris_bind_zsa_state(struct pipe_context *ctx, void *state)
    ice->state.cso_zsa = new_cso;
    ice->state.dirty |= IRIS_DIRTY_CC_VIEWPORT;
    ice->state.dirty |= IRIS_DIRTY_WM_DEPTH_STENCIL;
+   ice->state.dirty |= ice->state.dirty_for_nos[IRIS_NOS_DEPTH_STENCIL_ALPHA];
 }
 
 struct iris_rasterizer_state {
@@ -784,6 +786,7 @@ iris_bind_rasterizer_state(struct pipe_context *ctx, void *state)
    ice->state.cso_rast = new_cso;
    ice->state.dirty |= IRIS_DIRTY_RASTER;
    ice->state.dirty |= IRIS_DIRTY_CLIP;
+   ice->state.dirty |= ice->state.dirty_for_nos[IRIS_NOS_RASTERIZER];
 }
 
 static uint32_t
@@ -1410,6 +1413,8 @@ iris_set_framebuffer_state(struct pipe_context *ctx,
 
    /* Render target change */
    ice->state.dirty |= IRIS_DIRTY_BINDINGS_FS;
+
+   ice->state.dirty |= ice->state.dirty_for_nos[IRIS_NOS_FRAMEBUFFER];
 }
 
 static void
-- 
2.30.2