From f668ea11bd0b1f662e0be523a4bc46835e011ffa Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <maraeo@gmail.com>
Date: Thu, 12 Aug 2010 13:34:53 +0200
Subject: [PATCH] Revert "u_blitter: unify clear_depth_stencil and
 flush_depth_stencil"

This reverts commit de4784e36505316c2a5ab34cc5b371d17f38d3c5.
---
 src/gallium/auxiliary/util/u_blitter.c | 46 ++++++++++++++++++++++++++
 src/gallium/auxiliary/util/u_blitter.h |  2 ++
 src/gallium/drivers/r300/r300_blit.c   |  4 +--
 3 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index 1b9e957e3c1..b5b86b72142 100644
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -87,6 +87,7 @@ struct blitter_context_priv
    void *dsa_write_depth_keep_stencil;
    void *dsa_keep_depth_stencil;
    void *dsa_keep_depth_write_stencil;
+   void *dsa_flush_depth_stencil;
 
    void *velem_state;
 
@@ -157,6 +158,12 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe)
       pipe->create_depth_stencil_alpha_state(pipe, &dsa);
 
    dsa.depth.writemask = 1;
+   ctx->dsa_flush_depth_stencil =
+      pipe->create_depth_stencil_alpha_state(pipe, &dsa);
+
+   dsa.depth.enabled = 1;
+   dsa.depth.writemask = 1;
+   dsa.depth.func = PIPE_FUNC_ALWAYS;
    ctx->dsa_write_depth_keep_stencil =
       pipe->create_depth_stencil_alpha_state(pipe, &dsa);
 
@@ -938,3 +945,42 @@ void util_blitter_clear_depth_stencil(struct blitter_context *blitter,
                            UTIL_BLITTER_ATTRIB_NONE, NULL);
    blitter_restore_CSOs(ctx);
 }
+
+/* Clear a region of a depth stencil surface. */
+void util_blitter_flush_depth_stencil(struct blitter_context *blitter,
+                                      struct pipe_surface *dstsurf)
+{
+   struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
+   struct pipe_context *pipe = ctx->base.pipe;
+   struct pipe_framebuffer_state fb_state;
+
+   assert(dstsurf->texture);
+   if (!dstsurf->texture)
+      return;
+
+   /* check the saved state */
+   blitter_check_saved_CSOs(ctx);
+   assert(blitter->saved_fb_state.nr_cbufs != ~0);
+
+   /* bind CSOs */
+   pipe->bind_blend_state(pipe, ctx->blend_keep_color);
+   pipe->bind_depth_stencil_alpha_state(pipe, ctx->dsa_flush_depth_stencil);
+
+   pipe->bind_rasterizer_state(pipe, ctx->rs_state);
+   pipe->bind_fs_state(pipe, blitter_get_fs_col(ctx, 0));
+   pipe->bind_vs_state(pipe, ctx->vs_col);
+   pipe->bind_vertex_elements_state(pipe, ctx->velem_state);
+
+   /* set a framebuffer state */
+   fb_state.width = dstsurf->width;
+   fb_state.height = dstsurf->height;
+   fb_state.nr_cbufs = 0;
+   fb_state.cbufs[0] = 0;
+   fb_state.zsbuf = dstsurf;
+   pipe->set_framebuffer_state(pipe, &fb_state);
+
+   blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
+   blitter->draw_rectangle(blitter, 0, 0, dstsurf->width, dstsurf->height, 0,
+                           UTIL_BLITTER_ATTRIB_NONE, NULL);
+   blitter_restore_CSOs(ctx);
+}
diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h
index ba3f92eca85..f316587dea0 100644
--- a/src/gallium/auxiliary/util/u_blitter.h
+++ b/src/gallium/auxiliary/util/u_blitter.h
@@ -200,6 +200,8 @@ void util_blitter_clear_depth_stencil(struct blitter_context *blitter,
                                       unsigned dstx, unsigned dsty,
                                       unsigned width, unsigned height);
 
+void util_blitter_flush_depth_stencil(struct blitter_context *blitter,
+                                      struct pipe_surface *dstsurf);
 /* The functions below should be used to save currently bound constant state
  * objects inside a driver. The objects are automatically restored at the end
  * of the util_blitter_{clear, copy_region, fill_region} functions and then
diff --git a/src/gallium/drivers/r300/r300_blit.c b/src/gallium/drivers/r300/r300_blit.c
index 67e82884405..ff52286b5cd 100644
--- a/src/gallium/drivers/r300/r300_blit.c
+++ b/src/gallium/drivers/r300/r300_blit.c
@@ -279,9 +279,7 @@ void r300_flush_depth_stencil(struct pipe_context *pipe,
                                             PIPE_BIND_DEPTH_STENCIL);
     r300->z_decomp_rd = TRUE;
     r300_blitter_begin(r300, R300_CLEAR_SURFACE);
-    util_blitter_clear_depth_stencil(r300->blitter, dstsurf,
-                                     PIPE_CLEAR_DEPTH, 0, 0,
-                                     0, 0, dstsurf->width, dstsurf->height);
+    util_blitter_flush_depth_stencil(r300->blitter, dstsurf);
     r300_blitter_end(r300);
     r300->z_decomp_rd = FALSE;
 
-- 
2.30.2