anv: Add a helper to extract clear color from the attachment.

Extract the code from color_attachment_compute_aux_usage, so we can
later reuse it to update the clear color state buffer.

Signed-off-by: Rafael Antognolli <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index d7a04438165..b2d8079f3c9 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -2902,6 +2902,26 @@ void anv_fill_buffer_surface_state(struct anv_device *device,
                                    uint32_t offset, uint32_t range,
                                    uint32_t stride);
 
+static inline void
+anv_clear_color_from_att_state(union isl_color_value *clear_color,
+                               const struct anv_attachment_state *att_state,
+                               const struct anv_image_view *iview)
+{
+   const struct isl_format_layout *view_fmtl =
+      isl_format_get_layout(iview->planes[0].isl.format);
+
+#define COPY_CLEAR_COLOR_CHANNEL(c, i) \
+   if (view_fmtl->channels.c.bits) \
+      clear_color->u32[i] = att_state->clear_value.color.uint32[i]
+
+   COPY_CLEAR_COLOR_CHANNEL(r, 0);
+   COPY_CLEAR_COLOR_CHANNEL(g, 1);
+   COPY_CLEAR_COLOR_CHANNEL(b, 2);
+   COPY_CLEAR_COLOR_CHANNEL(a, 3);
+
+#undef COPY_CLEAR_COLOR_CHANNEL
+}
+
 
 struct anv_ycbcr_conversion {
    const struct anv_format *        format;