[Mesa-dev] [PATCH 1/2] gallium/util: Fix util_blitter_clear_render_target() for num_layers>1

[Edward O'Callaghan]

Previously util_blitter_clear_render_target() could not clear more
than the first layer. We need to generalise this so that
ARB_clear_texture can pass the 3d piglit test.

Signed-off-by: Edward O'Callaghan <eocallaghan at alterapraxis.com>
---
 src/gallium/auxiliary/util/u_blitter.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index fccc92c..7f213fa 100644
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -1852,10 +1852,19 @@ void util_blitter_clear_render_target(struct blitter_context *blitter,
    pipe->set_framebuffer_state(pipe, &fb_state);
    pipe->set_sample_mask(pipe, ~0);
 
-   blitter_set_common_draw_rect_state(ctx, FALSE, FALSE);
    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
-   blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, 0,
-                           UTIL_BLITTER_ATTRIB_COLOR, color);
+
+   unsigned num_layers = dstsurf->u.tex.last_layer - dstsurf->u.tex.first_layer + 1;
+   if (num_layers > 1 && ctx->has_layered) {
+      blitter_set_common_draw_rect_state(ctx, FALSE, TRUE);
+      blitter_set_clear_color(ctx, color);
+      blitter_draw(ctx, dstx, dsty, dstx+width, dsty+height, 0, num_layers);
+   }
+   else {
+      blitter_set_common_draw_rect_state(ctx, FALSE, FALSE);
+      blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, 0,
+                              UTIL_BLITTER_ATTRIB_COLOR, color);
+   }
 
    blitter_restore_vertex_states(ctx);
    blitter_restore_fragment_states(ctx);
-- 
2.5.0