mesa: rework Driver.CopyImageSubData() and related code

Previously, core Mesa's _mesa_CopyImageSubData() created temporary textures
to wrap renderbuffer sources/destinations.  This caused a bit of a mess in
the Mesa/gallium state tracker because we had to basically undo that
wrapping.

Instead, change ctx->Driver.CopyImageSubData() to take both gl_renderbuffer
and gl_texture_image src/dst pointers (one being null, the other non-null)
so the driver can handle renderbuffer vs. texture as needed.

For the i965 driver, we basically moved the code that wrapped textures
around renderbuffers from copyimage.c down into the met and driver code.

The old code in copyimage.c also made some questionable calls to
_mesa_BindTexture(), etc. which weren't undone at the end.

v2 (Jason Ekstrand): Rework the intel bits
v3 (Brian Paul): Update the temporary st_CopyImageSubData() function.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Tested-by: Nick Sarnie <commendsarnex@gmail.com>

1 files changed, 57 insertions, 23 deletions

diff --git a/src/mesa/drivers/dri/i965/intel_copy_image.c b/src/mesa/drivers/dri/i965/intel_copy_image.c
index ac2738f..d57651c 100644
--- a/src/mesa/drivers/dri/i965/intel_copy_image.c
+++ b/src/mesa/drivers/dri/i965/intel_copy_image.c
@@ -25,10 +25,12 @@
  *    Jason Ekstrand <jason.ekstrand@intel.com>
  */
 
+#include "intel_fbo.h"
 #include "intel_tex.h"
 #include "intel_blit.h"
 #include "intel_mipmap_tree.h"
 #include "main/formats.h"
+#include "main/teximage.h"
 #include "drivers/common/meta.h"
 
 static bool
@@ -196,54 +198,86 @@ copy_image_with_memcpy(struct brw_context *brw,
    }
 }
 
+
 static void
 intel_copy_image_sub_data(struct gl_context *ctx,
                           struct gl_texture_image *src_image,
+                          struct gl_renderbuffer *src_renderbuffer,
                           int src_x, int src_y, int src_z,
                           struct gl_texture_image *dst_image,
+                          struct gl_renderbuffer *dst_renderbuffer,
                           int dst_x, int dst_y, int dst_z,
                           int src_width, int src_height)
 {
    struct brw_context *brw = brw_context(ctx);
-   struct intel_texture_image *intel_src_image = intel_texture_image(src_image);
-   struct intel_texture_image *intel_dst_image = intel_texture_image(dst_image);
+   struct intel_mipmap_tree *src_mt, *dst_mt;
+   unsigned src_level, dst_level;
 
    if (_mesa_meta_CopyImageSubData_uncompressed(ctx,
-                                                src_image, src_x, src_y, src_z,
-                                                dst_image, dst_x, dst_y, dst_z,
+                                                src_image, src_renderbuffer,
+                                                src_x, src_y, src_z,
+                                                dst_image, dst_renderbuffer,
+                                                dst_x, dst_y, dst_z,
                                                 src_width, src_height)) {
       return;
    }
 
-   if (intel_src_image->mt->num_samples > 0 ||
-       intel_dst_image->mt->num_samples > 0) {
+   if (src_image) {
+      src_mt = intel_texture_image(src_image)->mt;
+   } else {
+      assert(src_renderbuffer);
+      src_mt = intel_renderbuffer(src_renderbuffer)->mt;
+      src_image = src_renderbuffer->TexImage;
+   }
+
+   if (dst_image) {
+      dst_mt = intel_texture_image(dst_image)->mt;
+   } else {
+      assert(dst_renderbuffer);
+      dst_mt = intel_renderbuffer(dst_renderbuffer)->mt;
+      src_image = src_renderbuffer->TexImage;
+   }
+
+   if (src_mt->num_samples > 0 || dst_mt->num_samples > 0) {
       _mesa_problem(ctx, "Failed to copy multisampled texture with meta path\n");
       return;
    }
 
-   /* Cube maps actually have different images per face */
-   if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
-      src_z = src_image->Face;
-   if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
-      dst_z = dst_image->Face;
+   if (src_image) {
+      src_level = src_image->Level + src_image->TexObject->MinLevel;
+
+      /* Cube maps actually have different images per face */
+      if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
+         src_z = src_image->Face;
+   } else {
+      src_level = 0;
+   }
+
+   if (dst_image) {
+      dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
+
+      /* Cube maps actually have different images per face */
+      if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
+         dst_z = dst_image->Face;
+   } else {
+      dst_level = 0;
+   }
 
    /* We are now going to try and copy the texture using the blitter.  If
     * that fails, we will fall back mapping the texture and using memcpy.
     * In either case, we need to do a full resolve.
     */
-   intel_miptree_all_slices_resolve_hiz(brw, intel_src_image->mt);
-   intel_miptree_all_slices_resolve_depth(brw, intel_src_image->mt);
-   intel_miptree_resolve_color(brw, intel_src_image->mt);
+   intel_miptree_all_slices_resolve_hiz(brw, src_mt);
+   intel_miptree_all_slices_resolve_depth(brw, src_mt);
+   intel_miptree_resolve_color(brw, src_mt);
 
-   intel_miptree_all_slices_resolve_hiz(brw, intel_dst_image->mt);
-   intel_miptree_all_slices_resolve_depth(brw, intel_dst_image->mt);
-   intel_miptree_resolve_color(brw, intel_dst_image->mt);
+   intel_miptree_all_slices_resolve_hiz(brw, dst_mt);
+   intel_miptree_all_slices_resolve_depth(brw, dst_mt);
+   intel_miptree_resolve_color(brw, dst_mt);
 
-   unsigned src_level = src_image->Level + src_image->TexObject->MinLevel;
-   unsigned dst_level = dst_image->Level + dst_image->TexObject->MinLevel;
-   if (copy_image_with_blitter(brw, intel_src_image->mt, src_level,
+   if (copy_image_with_blitter(brw, src_mt, src_level,
                                src_x, src_y, src_z,
-                               intel_dst_image->mt, dst_level,
+                               dst_mt, dst_level,
                                dst_x, dst_y, dst_z,
                                src_width, src_height))
       return;
@@ -251,9 +285,9 @@ intel_copy_image_sub_data(struct gl_context *ctx,
    /* This is a worst-case scenario software fallback that maps the two
     * textures and does a memcpy between them.
     */
-   copy_image_with_memcpy(brw, intel_src_image->mt, src_level,
+   copy_image_with_memcpy(brw, src_mt, src_level,
                           src_x, src_y, src_z,
-                          intel_dst_image->mt, dst_level,
+                          dst_mt, dst_level,
                           dst_x, dst_y, dst_z,
                           src_width, src_height);
 }