gallium: split transfer_inline_write into buffer and texture callbacks

to reduce the call indirections with u_resource_vtbl.

The worst call tree you could get was:
  - u_transfer_inline_write_vtbl
    - u_default_transfer_inline_write
      - u_transfer_map_vtbl
        - driver_transfer_map
      - u_transfer_unmap_vtbl
        - driver_transfer_unmap

That's 6 indirect calls. Some drivers only had 5. The goal is to have
1 indirect call for drivers that care. The resource type can be determined
statically at most call sites.

The new interface is:
  pipe_context::buffer_subdata(ctx, resource, usage, offset, size, data)
  pipe_context::texture_subdata(ctx, resource, level, usage, box, data,
                                stride, layer_stride)

v2: fix whitespace, correct ilo's behavior

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Acked-by: Roland Scheidegger <sroland@vmware.com>

4 files changed, 15 insertions, 16 deletions

diff --git a/src/gallium/drivers/i915/i915_resource.c b/src/gallium/drivers/i915/i915_resource.c
index 3ffb0b7..8e5572b 100644
--- a/src/gallium/drivers/i915/i915_resource.c
+++ b/src/gallium/drivers/i915/i915_resource.c
@@ -39,7 +39,8 @@ i915_init_resource_functions(struct i915_context *i915 )
    i915->base.transfer_map = u_transfer_map_vtbl;
    i915->base.transfer_flush_region = u_transfer_flush_region_vtbl;
    i915->base.transfer_unmap = u_transfer_unmap_vtbl;
-   i915->base.transfer_inline_write = u_transfer_inline_write_vtbl;
+   i915->base.buffer_subdata = i915_buffer_subdata;
+   i915->base.texture_subdata = u_default_texture_subdata;
 }
 
 void
diff --git a/src/gallium/drivers/i915/i915_resource.h b/src/gallium/drivers/i915/i915_resource.h
index 77fe8b7..0afd095 100644
--- a/src/gallium/drivers/i915/i915_resource.h
+++ b/src/gallium/drivers/i915/i915_resource.h
@@ -129,4 +129,10 @@ struct pipe_resource *
 i915_buffer_create(struct pipe_screen *screen,
 		   const struct pipe_resource *template);
 
+void
+i915_buffer_subdata(struct pipe_context *rm_ctx,
+                    struct pipe_resource *resource,
+                    unsigned usage, unsigned offset,
+                    unsigned size, const void *data);
+
 #endif /* I915_RESOURCE_H */
diff --git a/src/gallium/drivers/i915/i915_resource_buffer.c b/src/gallium/drivers/i915/i915_resource_buffer.c
index fb2e53b..24c954c 100644
--- a/src/gallium/drivers/i915/i915_resource_buffer.c
+++ b/src/gallium/drivers/i915/i915_resource_buffer.c
@@ -92,21 +92,15 @@ i915_buffer_transfer_unmap(struct pipe_context *pipe,
    util_slab_free(&i915->transfer_pool, transfer);
 }
 
-static void
-i915_buffer_transfer_inline_write( struct pipe_context *rm_ctx,
-                                   struct pipe_resource *resource,
-                                   unsigned level,
-                                   unsigned usage,
-                                   const struct pipe_box *box,
-                                   const void *data,
-                                   unsigned stride,
-                                   unsigned layer_stride)
+void
+i915_buffer_subdata(struct pipe_context *rm_ctx,
+                    struct pipe_resource *resource,
+                    unsigned usage, unsigned offset,
+                    unsigned size, const void *data)
 {
    struct i915_buffer *buffer = i915_buffer(resource);
 
-   memcpy(buffer->data + box->x,
-          data,
-          box->width);
+   memcpy(buffer->data + offset, data, size);
 }
 
 
@@ -117,7 +111,6 @@ struct u_resource_vtbl i915_buffer_vtbl =
    i915_buffer_transfer_map,	     /* transfer_map */
    u_default_transfer_flush_region,  /* transfer_flush_region */
    i915_buffer_transfer_unmap,	     /* transfer_unmap */
-   i915_buffer_transfer_inline_write /* transfer_inline_write */
 };
 
 
diff --git a/src/gallium/drivers/i915/i915_resource_texture.c b/src/gallium/drivers/i915/i915_resource_texture.c
index af9d97a..f77bbfd 100644
--- a/src/gallium/drivers/i915/i915_resource_texture.c
+++ b/src/gallium/drivers/i915/i915_resource_texture.c
@@ -818,7 +818,7 @@ i915_texture_transfer_unmap(struct pipe_context *pipe,
 }
 
 #if 0
-static void i915_transfer_inline_write( struct pipe_context *pipe,
+static void i915_texture_subdata(struct pipe_context *pipe,
                                  struct pipe_resource *resource,
                                  unsigned level,
                                  unsigned usage,
@@ -913,7 +913,6 @@ struct u_resource_vtbl i915_texture_vtbl =
    i915_texture_transfer_map,	      /* transfer_map */
    u_default_transfer_flush_region,   /* transfer_flush_region */
    i915_texture_transfer_unmap,	      /* transfer_unmap */
-   u_default_transfer_inline_write    /* transfer_inline_write */
 };