diff options
| -rw-r--r-- | src/gallium/drivers/r300/r300_texture.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c index 2f6c52b1375..c1df905033f 100644 --- a/src/gallium/drivers/r300/r300_texture.c +++ b/src/gallium/drivers/r300/r300_texture.c @@ -104,8 +104,62 @@ static void r300_texture_release(struct pipe_screen* screen, *texture = NULL; } +static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen, + struct pipe_texture* texture, + unsigned face, + unsigned level, + unsigned zslice, + unsigned flags) +{ + struct r300_texture* tex = (struct r300_texture*)texture; + struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface); + unsigned offset; + + /* XXX this is certainly dependent on tex target */ + offset = tex->offset[level]; + + if (surface) { + surface->refcount = 1; + surface->winsys = screen->winsys; + pipe_texture_reference(&surface->texture, texture); + pipe_buffer_reference(screen, &surface->buffer, tex->buffer); + surface->format = texture->format; + surface->width = texture->width[level]; + surface->height = texture->height[level]; + surface->block = texture->block; + surface->nblocksx = texture->nblocksx[level]; + surface->nblocksy = texture->nblocksy[level]; + /* XXX save the actual stride instead plz kthnxbai */ + surface->stride = + (texture->nblocksx[level] * texture->block.size + 31) & ~31; + surface->offset = offset; + surface->usage = flags; + surface->status = PIPE_SURFACE_STATUS_DEFINED; + } + + return surface; +} + +static void r300_tex_surface_release(struct pipe_screen* screen, + struct pipe_surface** surface) +{ + struct pipe_surface* s = *surface; + + s->refcount--; + + if (s->refcount <= 0) { + pipe_texture_reference(&s->texture, NULL); + pipe_buffer_reference(screen, &s->buffer, NULL); + FREE(s); + } + + *surface = NULL; +} + void r300_init_screen_texture_functions(struct pipe_screen* screen) { screen->texture_create = r300_texture_create; screen->texture_release = r300_texture_release; + screen->get_tex_surface = r300_get_tex_surface; + screen->tex_surface_release = r300_tex_surface_release; } |