[Mesa-dev] [PATCH 11/22] st/mesa: set colormask to zero when blitting depth

[Marek Olšák]

---
 src/gallium/auxiliary/util/u_blit.c |   12 ++++++++----
 src/mesa/state_tracker/st_cb_blit.c |    4 ++--
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c
index 6cdfbca..30f4a93 100644
--- a/src/gallium/auxiliary/util/u_blit.c
+++ b/src/gallium/auxiliary/util/u_blit.c
@@ -56,7 +56,7 @@ struct blit_state
    struct pipe_context *pipe;
    struct cso_context *cso;
 
-   struct pipe_blend_state blend;
+   struct pipe_blend_state blend_write_color, blend_keep_color;
    struct pipe_depth_stencil_alpha_state depthstencil_keep;
    struct pipe_depth_stencil_alpha_state depthstencil_write;
    struct pipe_rasterizer_state rasterizer;
@@ -94,7 +94,7 @@ util_create_blit(struct pipe_context *pipe, struct cso_context *cso)
    ctx->cso = cso;
 
    /* disabled blending/masking */
-   ctx->blend.rt[0].colormask = PIPE_MASK_RGBA;
+   ctx->blend_write_color.rt[0].colormask = PIPE_MASK_RGBA;
 
    /* no-op depth/stencil/alpha */
    ctx->depthstencil_write.depth.enabled = 1;
@@ -564,7 +564,11 @@ util_blit_pixels(struct blit_state *ctx,
    cso_save_vertex_buffers(ctx->cso);
 
    /* set misc state we care about */
-   cso_set_blend(ctx->cso, &ctx->blend);
+   if (writemask)
+      cso_set_blend(ctx->cso, &ctx->blend_write_color);
+   else
+      cso_set_blend(ctx->cso, &ctx->blend_keep_color);
+
    cso_set_depth_stencil_alpha(ctx->cso,
                                dst_is_depth ? &ctx->depthstencil_write :
                                               &ctx->depthstencil_keep);
@@ -721,7 +725,7 @@ util_blit_pixels_tex(struct blit_state *ctx,
    cso_save_vertex_buffers(ctx->cso);
 
    /* set misc state we care about */
-   cso_set_blend(ctx->cso, &ctx->blend);
+   cso_set_blend(ctx->cso, &ctx->blend_write_color);
    cso_set_depth_stencil_alpha(ctx->cso, &ctx->depthstencil_keep);
    cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
    cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
diff --git a/src/mesa/state_tracker/st_cb_blit.c b/src/mesa/state_tracker/st_cb_blit.c
index 4547ba7..a50b79a 100644
--- a/src/mesa/state_tracker/st_cb_blit.c
+++ b/src/mesa/state_tracker/st_cb_blit.c
@@ -294,7 +294,7 @@ st_BlitFramebuffer(struct gl_context *ctx,
                           srcX0, srcY0, srcX1, srcY1,
                           srcDepthRb->surface->u.tex.first_layer,
                           dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
-                          0.0, pFilter, TGSI_WRITEMASK_XYZW);
+                          0.0, pFilter, 0);
       }
       else {
          /* blitting depth and stencil separately */
@@ -305,7 +305,7 @@ st_BlitFramebuffer(struct gl_context *ctx,
                              srcX0, srcY0, srcX1, srcY1,
                              srcDepthRb->surface->u.tex.first_layer,
                              dstDepthSurf, dstX0, dstY0, dstX1, dstY1,
-                             0.0, pFilter, TGSI_WRITEMASK_XYZW);
+                             0.0, pFilter, 0);
          }
 
          if (mask & GL_STENCIL_BUFFER_BIT) {
-- 
1.7.9.5