i965/sf_state: Pull flat_enables out of prog_data

Previously, we were walking over the shader source to figure out which
inputs should be marked flat.  Now, we can just pull it out of prog_data.
This is needed for properly setting up 3DSTATE_SF/SBE for Vulkan and it
also means that it will get properly cached.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

1 files changed, 2 insertions, 19 deletions

diff --git a/src/mesa/drivers/dri/i965/gen6_sf_state.c b/src/mesa/drivers/dri/i965/gen6_sf_state.c
index 42f9a5c..4fdcb8d 100644
--- a/src/mesa/drivers/dri/i965/gen6_sf_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_sf_state.c
@@ -155,14 +155,12 @@ void
 calculate_attr_overrides(const struct brw_context *brw,
                          uint16_t *attr_overrides,
                          uint32_t *point_sprite_enables,
-                         uint32_t *flat_enables,
                          uint32_t *urb_entry_read_length,
                          uint32_t *urb_entry_read_offset)
 {
    uint32_t max_source_attr = 0;
 
    *point_sprite_enables = 0;
-   *flat_enables = 0;
 
    *urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
 
@@ -180,9 +178,6 @@ calculate_attr_overrides(const struct brw_context *brw,
 
    *urb_entry_read_offset = fs_needs_vue_header ? 0 : 1;
 
-   /* _NEW_LIGHT */
-   bool shade_model_flat = brw->ctx.Light.ShadeModel == GL_FLAT;
-
    /* From the Ivybridge PRM, Vol 2 Part 1, 3DSTATE_SBE,
     * description of dw10 Point Sprite Texture Coordinate Enable:
     *
@@ -208,10 +203,6 @@ calculate_attr_overrides(const struct brw_context *brw,
    memset(attr_overrides, 0, 16*sizeof(*attr_overrides));
 
    for (int attr = 0; attr < VARYING_SLOT_MAX; attr++) {
-      /* BRW_NEW_FRAGMENT_PROGRAM */
-      enum glsl_interp_qualifier interp_qualifier =
-         brw->fragment_program->InterpQualifier[attr];
-      bool is_gl_Color = attr == VARYING_SLOT_COL0 || attr == VARYING_SLOT_COL1;
       /* BRW_NEW_FS_PROG_DATA */
       int input_index = brw->wm.prog_data->urb_setup[attr];
 
@@ -234,12 +225,6 @@ calculate_attr_overrides(const struct brw_context *brw,
             *point_sprite_enables |= (1 << input_index);
       }
 
-      /* flat shading */
-      if (interp_qualifier == INTERP_QUALIFIER_FLAT ||
-          (shade_model_flat && is_gl_Color &&
-           interp_qualifier == INTERP_QUALIFIER_NONE))
-         *flat_enables |= (1 << input_index);
-
       /* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_LIGHT | _NEW_PROGRAM */
       uint16_t attr_override = point_sprite ? 0 :
          get_attr_override(&brw->vue_map_geom_out,
@@ -285,7 +270,6 @@ upload_sf_state(struct brw_context *brw)
    uint32_t num_outputs = brw->wm.prog_data->num_varying_inputs;
    uint32_t dw1, dw2, dw3, dw4;
    uint32_t point_sprite_enables;
-   uint32_t flat_enables;
    int i;
    /* _NEW_BUFFER */
    bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
@@ -428,8 +412,7 @@ upload_sf_state(struct brw_context *brw)
    uint32_t urb_entry_read_length;
    uint32_t urb_entry_read_offset;
    calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
-                            &flat_enables, &urb_entry_read_length,
-                            &urb_entry_read_offset);
+                            &urb_entry_read_length, &urb_entry_read_offset);
    dw1 |= (urb_entry_read_length << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT |
            urb_entry_read_offset << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT);
 
@@ -446,7 +429,7 @@ upload_sf_state(struct brw_context *brw)
       OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
    }
    OUT_BATCH(point_sprite_enables); /* dw16 */
-   OUT_BATCH(flat_enables);
+   OUT_BATCH(brw->wm.prog_data->flat_inputs);
    OUT_BATCH(0); /* wrapshortest enables 0-7 */
    OUT_BATCH(0); /* wrapshortest enables 8-15 */
    ADVANCE_BATCH();