freedreno/ir3: refactor out helpers for comparing shader keys

Each of the ir3 users has *basically* the same logic for comparing the
previous and current shader key, to see which, if any, shader state
needs to be marked dirty due to shader variant change.

The difference between gen's was just that some lowering flags never get
set on certain generations.  But it doesn't really hurt to include the
extra checks (because both keys would have false).

Signed-off-by: Rob Clark <[email protected]>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_shader.h b/src/gallium/drivers/freedreno/ir3/ir3_shader.h
index 052a563b945..59584ec5b7b 100644
--- a/src/gallium/drivers/freedreno/ir3/ir3_shader.h
+++ b/src/gallium/drivers/freedreno/ir3/ir3_shader.h
@@ -105,6 +105,57 @@ ir3_shader_key_equal(struct ir3_shader_key *a, struct ir3_shader_key *b)
 	return a->global == b->global;
 }
 
+/* will the two keys produce different lowering for a fragment shader? */
+static inline bool
+ir3_shader_key_changes_fs(struct ir3_shader_key *key, struct ir3_shader_key *last_key)
+{
+	if (last_key->has_per_samp || key->has_per_samp) {
+		if ((last_key->fsaturate_s != key->fsaturate_s) ||
+				(last_key->fsaturate_t != key->fsaturate_t) ||
+				(last_key->fsaturate_r != key->fsaturate_r) ||
+				(last_key->fastc_srgb != key->fastc_srgb))
+			return true;
+	}
+
+	if (last_key->fclamp_color != key->fclamp_color)
+		return true;
+
+	if (last_key->color_two_side != key->color_two_side)
+		return true;
+
+	if (last_key->half_precision != key->half_precision)
+		return true;
+
+	if (last_key->rasterflat != key->rasterflat)
+		return true;
+
+	if (last_key->ucp_enables != key->ucp_enables)
+		return true;
+
+	return false;
+}
+
+/* will the two keys produce different lowering for a vertex shader? */
+static inline bool
+ir3_shader_key_changes_vs(struct ir3_shader_key *key, struct ir3_shader_key *last_key)
+{
+	if (last_key->has_per_samp || key->has_per_samp) {
+		if ((last_key->vsaturate_s != key->vsaturate_s) ||
+				(last_key->vsaturate_t != key->vsaturate_t) ||
+				(last_key->vsaturate_r != key->vsaturate_r) ||
+				(last_key->vastc_srgb != key->vastc_srgb))
+			return true;
+	}
+
+	if (last_key->vclamp_color != key->vclamp_color)
+		return true;
+
+	if (last_key->ucp_enables != key->ucp_enables)
+		return true;
+
+	return false;
+}
+
 struct ir3_shader_variant {
 	struct fd_bo *bo;