u_blitter: enable msaa when dst num samples is > 1

Commit ea5b7de138b broke some piglit tests on radeonsi (Bonaire hardware).
This commit fixes half of the regression by enabling msaa if the dest surface has
more than 1 sample (instead of hardcoding it to false).

Fixes: ea5b7de138b ("radeonsi: make gl_SampleMaskIn = 0x1 when MSAA is disabled")
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index b07267724e51baadd6d4a794c6edcd229babf281..396e23294a6e1dcbf02e2520292a4d94e1f0aaee 100644 (file)
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -2235,6 +2235,7 @@ void util_blitter_clear_render_target(struct blitter_context *blitter,
    struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
    struct pipe_context *pipe = ctx->base.pipe;
    struct pipe_framebuffer_state fb_state;
+   bool msaa;
    unsigned num_layers;
 
    assert(dstsurf->texture);
@@ -2261,6 +2262,7 @@ void util_blitter_clear_render_target(struct blitter_context *blitter,
    fb_state.zsbuf = 0;
    pipe->set_framebuffer_state(pipe, &fb_state);
    pipe->set_sample_mask(pipe, ~0);
+   msaa = util_framebuffer_get_num_samples(&fb_state) > 1;
 
    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
 
@@ -2269,12 +2271,12 @@ void util_blitter_clear_render_target(struct blitter_context *blitter,
 
    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, false);
+      blitter_set_common_draw_rect_state(ctx, false, msaa);
       blitter->draw_rectangle(blitter, ctx->velem_state, get_vs_layered,
                               dstx, dsty, dstx+width, dsty+height, 0,
                               num_layers, UTIL_BLITTER_ATTRIB_COLOR, &attrib);
    } else {
-      blitter_set_common_draw_rect_state(ctx, false, false);
+      blitter_set_common_draw_rect_state(ctx, false, msaa);
       blitter->draw_rectangle(blitter, ctx->velem_state,
                               get_vs_passthrough_pos_generic,
                               dstx, dsty, dstx+width, dsty+height, 0,
@@ -2413,7 +2415,8 @@ void util_blitter_custom_depth_stencil(struct blitter_context *blitter,
    pipe->set_framebuffer_state(pipe, &fb_state);
    pipe->set_sample_mask(pipe, sample_mask);
 
-   blitter_set_common_draw_rect_state(ctx, false, false);
+   blitter_set_common_draw_rect_state(ctx, false,
+      util_framebuffer_get_num_samples(&fb_state) > 1);
    blitter_set_dst_dimensions(ctx, zsurf->width, zsurf->height);
    blitter->draw_rectangle(blitter, ctx->velem_state, get_vs_passthrough_pos,
                            0, 0, zsurf->width, zsurf->height, depth,
@@ -2613,7 +2616,8 @@ void util_blitter_custom_resolve_color(struct blitter_context *blitter,
    fb_state.zsbuf = NULL;
    pipe->set_framebuffer_state(pipe, &fb_state);
 
-   blitter_set_common_draw_rect_state(ctx, false, false);
+   blitter_set_common_draw_rect_state(ctx, false,
+      util_framebuffer_get_num_samples(&fb_state) > 1);
    blitter_set_dst_dimensions(ctx, src->width0, src->height0);
    blitter->draw_rectangle(blitter, ctx->velem_state, get_vs_passthrough_pos,
                            0, 0, src->width0, src->height0,
@@ -2663,7 +2667,8 @@ void util_blitter_custom_color(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_common_draw_rect_state(ctx, false,
+      util_framebuffer_get_num_samples(&fb_state) > 1);
    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
    blitter->draw_rectangle(blitter, ctx->velem_state, get_vs_passthrough_pos,
                            0, 0, dstsurf->width, dstsurf->height,
@@ -2725,7 +2730,8 @@ void util_blitter_custom_shader(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_common_draw_rect_state(ctx, false,
+      util_framebuffer_get_num_samples(&fb_state) > 1);
    blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
    blitter->draw_rectangle(blitter, ctx->velem_state, get_custom_vs,
                            0, 0, dstsurf->width, dstsurf->height,