vega: don't enable blending if not necessary

In some places blending was enabled even though it wasn't necessary.
Also remove a (bogus) reenabling of color writes, which wasn't really used.

3 files changed, 4 insertions, 6 deletions

diff --git a/src/gallium/state_trackers/vega/api_filters.c b/src/gallium/state_trackers/vega/api_filters.c
index 555d3bd7f9..cf4a11bb14 100644
--- a/src/gallium/state_trackers/vega/api_filters.c
+++ b/src/gallium/state_trackers/vega/api_filters.c
@@ -139,7 +139,7 @@ static void setup_blend()
       blend.rt[0].colormask |= PIPE_MASK_B;
    if (ctx->state.vg.filter_channel_mask & VG_ALPHA)
       blend.rt[0].colormask |= PIPE_MASK_A;
-   blend.rt[0].blend_enable = 1; /* XXX why? */
+   blend.rt[0].blend_enable = 0;
    cso_set_blend(ctx->cso_context, &blend);
 }
 
diff --git a/src/gallium/state_trackers/vega/mask.c b/src/gallium/state_trackers/vega/mask.c
index d94fa47da6..ba8ecef1d2 100644
--- a/src/gallium/state_trackers/vega/mask.c
+++ b/src/gallium/state_trackers/vega/mask.c
@@ -354,7 +354,7 @@ static void setup_mask_blend()
    struct pipe_blend_state blend;
 
    memset(&blend, 0, sizeof(struct pipe_blend_state));
-   blend.rt[0].blend_enable = 1; /* XXX why? */
+   blend.rt[0].blend_enable = 0;
    blend.rt[0].colormask = PIPE_MASK_RGBA;
    blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
    blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
diff --git a/src/gallium/state_trackers/vega/vg_context.c b/src/gallium/state_trackers/vega/vg_context.c
index f05a5e68c6..64207d97ba 100644
--- a/src/gallium/state_trackers/vega/vg_context.c
+++ b/src/gallium/state_trackers/vega/vg_context.c
@@ -286,8 +286,6 @@ static void update_clip_state(struct vg_context *ctx)
          renderer_draw_quad(ctx->renderer, minx, miny, maxx, maxy, 0.0f);
       }
 
-      blend->rt[0].colormask = PIPE_MASK_R; /*enable colorwrites*/
-      /* XXX really only for red channel? */
       cso_restore_blend(ctx->cso_context);
       cso_restore_fragment_shader(ctx->cso_context);
 
@@ -311,7 +309,7 @@ void vg_validate_state(struct vg_context *ctx)
          blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
          blend->rt[0].rgb_dst_factor   = PIPE_BLENDFACTOR_ZERO;
          blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
-         /* could disable blending ? */
+         blend->rt[0].blend_enable = 0;
          break;
       case VG_BLEND_SRC_OVER:
          blend->rt[0].rgb_src_factor   = PIPE_BLENDFACTOR_SRC_ALPHA;
@@ -345,7 +343,7 @@ void vg_validate_state(struct vg_context *ctx)
          blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
          blend->rt[0].rgb_dst_factor   = PIPE_BLENDFACTOR_ZERO;
          blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
-         /* could disable blending ? */
+         blend->rt[0].blend_enable = 0;
          break;
       case VG_BLEND_ADDITIVE:
          blend->rt[0].rgb_src_factor   = PIPE_BLENDFACTOR_ONE;