mesa/meta: Add a partial implementation of CopyImageSubData

This provides an implementation of CopyImageSubData that works if both
textures are uncompressed.  This implementation works by using a
combination of texture views and BlitFramebuffer.  If one of the textures
is compressed, it returns false and the driver is expected to provide a
fallback.

v2: Don't leak fbo's

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>

v3: Change glGen/DeleteTextures to _mesa_Gen/DeleteTextures

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h
index f12dc65..e2da2f4 100644
--- a/src/mesa/drivers/common/meta.h
+++ b/src/mesa/drivers/common/meta.h
@@ -440,6 +440,14 @@ _mesa_meta_and_swrast_BlitFramebuffer(struct gl_context *ctx,
                                       GLint dstX1, GLint dstY1,
                                       GLbitfield mask, GLenum filter);
 
+bool
+_mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
+                                         struct gl_texture_image *src_tex_image,
+                                         int src_x, int src_y, int src_z,
+                                         struct gl_texture_image *dst_tex_image,
+                                         int dst_x, int dst_y, int dst_z,
+                                         int src_width, int src_height);
+
 extern void
 _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers);