[Mesa-dev] [PATCH 11/19] gallium/u_blitter: disable tessellation for all operations

[Ilia Mirkin]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/auxiliary/util/u_blitter.c | 27 +++++++++++++++++++++++++++
 src/gallium/auxiliary/util/u_blitter.h | 16 +++++++++++++++-
 2 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index 9d087fe..cea0d31 100644
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -130,6 +130,7 @@ struct blitter_context_priv
    unsigned dst_height;
 
    boolean has_geometry_shader;
+   boolean has_tessellation;
    boolean has_layered;
    boolean has_stream_out;
    boolean has_stencil_export;
@@ -183,6 +184,11 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe)
    ctx->has_geometry_shader =
       pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_GEOMETRY,
                                      PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0;
+
+   ctx->has_tessellation =
+      pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_TESSCTRL,
+                                     PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0;
+
    ctx->has_stream_out =
       pipe->screen->get_param(pipe->screen,
                               PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS) != 0;
@@ -510,6 +516,8 @@ static void blitter_check_saved_vertex_states(struct blitter_context_priv *ctx)
    assert(ctx->base.saved_velem_state != INVALID_PTR);
    assert(ctx->base.saved_vs != INVALID_PTR);
    assert(!ctx->has_geometry_shader || ctx->base.saved_gs != INVALID_PTR);
+   assert(!ctx->has_tessellation || ctx->base.saved_tcs != INVALID_PTR);
+   assert(!ctx->has_tessellation || ctx->base.saved_tes != INVALID_PTR);
    assert(!ctx->has_stream_out || ctx->base.saved_num_so_targets != ~0);
    assert(ctx->base.saved_rs_state != INVALID_PTR);
 }
@@ -538,6 +546,13 @@ static void blitter_restore_vertex_states(struct blitter_context_priv *ctx)
       ctx->base.saved_gs = INVALID_PTR;
    }
 
+   if (ctx->has_tessellation) {
+      pipe->bind_tcs_state(pipe, ctx->base.saved_tcs);
+      pipe->bind_tes_state(pipe, ctx->base.saved_tes);
+      ctx->base.saved_tcs = INVALID_PTR;
+      ctx->base.saved_tes = INVALID_PTR;
+   }
+
    /* Stream outputs. */
    if (ctx->has_stream_out) {
       unsigned offsets[PIPE_MAX_SO_BUFFERS];
@@ -1108,6 +1123,10 @@ static void blitter_set_common_draw_rect_state(struct blitter_context_priv *ctx,
 
    if (ctx->has_geometry_shader)
       pipe->bind_gs_state(pipe, NULL);
+   if (ctx->has_tessellation) {
+      pipe->bind_tcs_state(pipe, NULL);
+      pipe->bind_tes_state(pipe, NULL);
+   }
    if (ctx->has_stream_out)
       pipe->set_stream_output_targets(pipe, 0, NULL, NULL);
 }
@@ -1966,6 +1985,10 @@ void util_blitter_copy_buffer(struct blitter_context *blitter,
    bind_vs_pos_only(ctx);
    if (ctx->has_geometry_shader)
       pipe->bind_gs_state(pipe, NULL);
+   if (ctx->has_tessellation) {
+      pipe->bind_tcs_state(pipe, NULL);
+      pipe->bind_tes_state(pipe, NULL);
+   }
    pipe->bind_rasterizer_state(pipe, ctx->rs_discard_state);
 
    so_target = pipe->create_stream_output_target(pipe, dst, dstx, size);
@@ -2026,6 +2049,10 @@ void util_blitter_clear_buffer(struct blitter_context *blitter,
    bind_vs_pos_only(ctx);
    if (ctx->has_geometry_shader)
       pipe->bind_gs_state(pipe, NULL);
+   if (ctx->has_tessellation) {
+      pipe->bind_tcs_state(pipe, NULL);
+      pipe->bind_tes_state(pipe, NULL);
+   }
    pipe->bind_rasterizer_state(pipe, ctx->rs_discard_state);
 
    so_target = pipe->create_stream_output_target(pipe, dst, offset, size);
diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h
index 1568030..93b0e51 100644
--- a/src/gallium/auxiliary/util/u_blitter.h
+++ b/src/gallium/auxiliary/util/u_blitter.h
@@ -102,7 +102,7 @@ struct blitter_context
    void *saved_dsa_state;     /**< depth stencil alpha state */
    void *saved_velem_state;   /**< vertex elements state */
    void *saved_rs_state;      /**< rasterizer state */
-   void *saved_fs, *saved_vs, *saved_gs; /**< shaders */
+   void *saved_fs, *saved_vs, *saved_gs, *saved_tcs, *saved_tes; /**< shaders */
 
    struct pipe_framebuffer_state saved_fb_state;  /**< framebuffer state */
    struct pipe_stencil_ref saved_stencil_ref;     /**< stencil ref */
@@ -427,6 +427,20 @@ void util_blitter_save_geometry_shader(struct blitter_context *blitter,
    blitter->saved_gs = gs;
 }
 
+static INLINE void
+util_blitter_save_tessctrl_shader(struct blitter_context *blitter,
+                                  void *sh)
+{
+   blitter->saved_tcs = sh;
+}
+
+static INLINE void
+util_blitter_save_tesseval_shader(struct blitter_context *blitter,
+                                  void *sh)
+{
+   blitter->saved_tes = sh;
+}
+
 static INLINE
 void util_blitter_save_framebuffer(struct blitter_context *blitter,
                                    const struct pipe_framebuffer_state *state)
-- 
2.0.5