[Mesa-dev] [PATCH 12/23] i915g: implement blit

[Marek Olšák]

---
 src/gallium/drivers/i915/i915_context.c |   11 +++--
 src/gallium/drivers/i915/i915_surface.c |   73 +++++++++++++++++++++++--------
 2 files changed, 61 insertions(+), 23 deletions(-)

diff --git a/src/gallium/drivers/i915/i915_context.c b/src/gallium/drivers/i915/i915_context.c
index 988d659..1f2ca84 100644
--- a/src/gallium/drivers/i915/i915_context.c
+++ b/src/gallium/drivers/i915/i915_context.c
@@ -187,6 +187,13 @@ i915_create_context(struct pipe_screen *screen, void *priv)
    i915_init_resource_functions(i915);
    i915_init_query_functions(i915);
 
+   /* Create blitter. */
+   i915->blitter = util_blitter_create(&i915->base);
+   assert(i915->blitter);
+
+   /* must be done before installing Draw stages */
+   util_blitter_cache_all_shaders(i915->blitter);
+
    draw_install_aaline_stage(i915->draw, &i915->base);
    draw_install_aapoint_stage(i915->draw, &i915->base);
    draw_enable_point_sprites(i915->draw, TRUE);
@@ -194,10 +201,6 @@ i915_create_context(struct pipe_screen *screen, void *priv)
    /* augmented draw pipeline clobbers state functions */
    i915_init_fixup_state_functions(i915);
 
-   /* Create blitter last - calls state creation functions. */
-   i915->blitter = util_blitter_create(&i915->base);
-   assert(i915->blitter);
-
    i915->dirty = ~0;
    i915->hardware_dirty = ~0;
    i915->immediate_dirty = ~0;
diff --git a/src/gallium/drivers/i915/i915_surface.c b/src/gallium/drivers/i915/i915_surface.c
index 99837fe..4bb5f48 100644
--- a/src/gallium/drivers/i915/i915_surface.c
+++ b/src/gallium/drivers/i915/i915_surface.c
@@ -44,6 +44,31 @@
  */
 
 static void
+i915_util_blitter_save_states(struct i915_context *i915)
+{
+   util_blitter_save_blend(i915->blitter, (void *)i915->blend);
+   util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
+   util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
+   util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
+   util_blitter_save_fragment_shader(i915->blitter, i915->saved_fs);
+   util_blitter_save_vertex_shader(i915->blitter, i915->saved_vs);
+   util_blitter_save_viewport(i915->blitter, &i915->viewport);
+   util_blitter_save_scissor(i915->blitter, &i915->scissor);
+   util_blitter_save_vertex_elements(i915->blitter, i915->saved_velems);
+   util_blitter_save_vertex_buffers(i915->blitter, i915->saved_nr_vertex_buffers,
+                                    i915->saved_vertex_buffers);
+
+   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
+
+   util_blitter_save_fragment_sampler_states(i915->blitter,
+                                             i915->saved_nr_samplers,
+                                             i915->saved_samplers);
+   util_blitter_save_fragment_sampler_views(i915->blitter,
+                                            i915->saved_nr_sampler_views,
+                                            i915->saved_sampler_views);
+}
+
+static void
 i915_surface_copy_render(struct pipe_context *pipe,
                          struct pipe_resource *dst, unsigned dst_level,
                          unsigned dstx, unsigned dsty, unsigned dstz,
@@ -66,25 +91,7 @@ i915_surface_copy_render(struct pipe_context *pipe,
       return;
    }
 
-   util_blitter_save_blend(i915->blitter, (void *)i915->blend);
-   util_blitter_save_depth_stencil_alpha(i915->blitter, (void *)i915->depth_stencil);
-   util_blitter_save_stencil_ref(i915->blitter, &i915->stencil_ref);
-   util_blitter_save_rasterizer(i915->blitter, (void *)i915->rasterizer);
-   util_blitter_save_fragment_shader(i915->blitter, i915->saved_fs);
-   util_blitter_save_vertex_shader(i915->blitter, i915->saved_vs);
-   util_blitter_save_viewport(i915->blitter, &i915->viewport);
-   util_blitter_save_vertex_elements(i915->blitter, i915->saved_velems);
-   util_blitter_save_vertex_buffers(i915->blitter, i915->saved_nr_vertex_buffers,
-                                    i915->saved_vertex_buffers);
-
-   util_blitter_save_framebuffer(i915->blitter, &i915->framebuffer);
-
-   util_blitter_save_fragment_sampler_states(i915->blitter,
-                                             i915->saved_nr_samplers,
-                                             i915->saved_samplers);
-   util_blitter_save_fragment_sampler_views(i915->blitter,
-                                            i915->saved_nr_sampler_views,
-                                            i915->saved_sampler_views);
+   i915_util_blitter_save_states(i915);
 
    util_blitter_copy_texture(i915->blitter, dst, dst_level, dstx, dsty, dstz,
                             src, src_level, src_box, PIPE_MASK_RGBAZS, TRUE);
@@ -206,6 +213,33 @@ i915_surface_copy_blitter(struct pipe_context *pipe,
 }
 
 static void
+i915_blit(struct pipe_context *pipe, const struct pipe_blit_info *blit_info)
+{
+   struct i915_context *i915 = i915_context(pipe);
+   struct pipe_blit_info info = *blit_info;
+
+   if (util_try_blit_via_copy_region(pipe, &info)) {
+      return; /* done */
+   }
+
+   if (info.mask & PIPE_MASK_S) {
+      debug_printf("i915: cannot blit stencil, skipping\n");
+      info.mask &= ~PIPE_MASK_S;
+   }
+
+   if (!util_blitter_is_blit_supported(i915->blitter, &info)) {
+      debug_printf("i915: blit unsupported %s -> %s\n",
+                   util_format_short_name(info.src.resource->format),
+                   util_format_short_name(info.dst.resource->format));
+      return;
+   }
+
+   i915_util_blitter_save_states(i915);
+
+   util_blitter_blit(i915->blitter, &info);
+}
+
+static void
 i915_clear_render_target_blitter(struct pipe_context *pipe,
                                  struct pipe_surface *dst,
                                  const union pipe_color_union *color,
@@ -325,6 +359,7 @@ i915_init_surface_functions(struct i915_context *i915)
       i915->base.clear_render_target = i915_clear_render_target_render;
       i915->base.clear_depth_stencil = i915_clear_depth_stencil_render;
    }
+   i915->base.blit = i915_blit;
    i915->base.create_surface = i915_create_surface;
    i915->base.surface_destroy = i915_surface_destroy;
 }
-- 
1.7.9.5