X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fgallium%2Fdrivers%2Fnv40%2Fnv40_screen.c;h=ab128fecda7bedda6ff919508b6c8055febf2a97;hb=01cbd764962ff49bf104e5997914ced53360ef81;hp=ada0238511d76b63c7c82868b1dac98c0ebd4c43;hpb=5b714723895d321db753f896576de5e2c27778c3;p=mesa.git

diff --git a/src/gallium/drivers/nv40/nv40_screen.c b/src/gallium/drivers/nv40/nv40_screen.c
index ada0238511d..ab128fecda7 100644
--- a/src/gallium/drivers/nv40/nv40_screen.c
+++ b/src/gallium/drivers/nv40/nv40_screen.c
@@ -59,6 +59,8 @@ nv40_screen_get_param(struct pipe_screen *pscreen, int param)
 	case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 	case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 		return 1;
+	case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
+		return 0; /* We have 4 - but unsupported currently */
 	case NOUVEAU_CAP_HW_VTXBUF:
 		return 1;
 	case NOUVEAU_CAP_HW_IDXBUF:
@@ -137,22 +139,75 @@ static void *
 nv40_surface_map(struct pipe_screen *screen, struct pipe_surface *surface,
 		 unsigned flags )
 {
-	struct pipe_winsys *ws = screen->winsys;
-	void *map;
+	struct pipe_winsys	*ws = screen->winsys;
+	struct pipe_surface	*surface_to_map;
+	void			*map;
 
-	map = ws->buffer_map(ws, surface->buffer, flags);
+	if (!(surface->texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)) {
+		struct nv40_miptree *mt = (struct nv40_miptree *)surface->texture;
+
+		if (!mt->shadow_tex) {
+			unsigned old_tex_usage = surface->texture->tex_usage;
+			surface->texture->tex_usage = NOUVEAU_TEXTURE_USAGE_LINEAR |
+			                              PIPE_TEXTURE_USAGE_DYNAMIC;
+			mt->shadow_tex = screen->texture_create(screen, surface->texture);
+			surface->texture->tex_usage = old_tex_usage;
+
+			assert(mt->shadow_tex->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR);
+		}
+
+		mt->shadow_surface = screen->get_tex_surface
+		(
+			screen, mt->shadow_tex,
+			surface->face, surface->level, surface->zslice,
+			surface->usage
+		);
+
+		surface_to_map = mt->shadow_surface;
+	}
+	else
+		surface_to_map = surface;
+
+	assert(surface_to_map);
+
+	map = ws->buffer_map(ws, surface_to_map->buffer, flags);
 	if (!map)
 		return NULL;
 
-	return map + surface->offset;
+	return map + surface_to_map->offset;
 }
 
 static void
 nv40_surface_unmap(struct pipe_screen *screen, struct pipe_surface *surface)
 {
-	struct pipe_winsys *ws = screen->winsys;
+	struct pipe_winsys	*ws = screen->winsys;
+	struct pipe_surface	*surface_to_unmap;
 
-	ws->buffer_unmap(ws, surface->buffer);
+	/* TODO: Copy from shadow just before push buffer is flushed instead.
+	         There are probably some programs that map/unmap excessively
+	         before rendering. */
+	if (!(surface->texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)) {
+		struct nv40_miptree *mt = (struct nv40_miptree *)surface->texture;
+
+		assert(mt->shadow_tex);
+
+		surface_to_unmap = mt->shadow_surface;
+	}
+	else
+		surface_to_unmap = surface;
+
+	assert(surface_to_unmap);
+
+	ws->buffer_unmap(ws, surface_to_unmap->buffer);
+
+	if (surface_to_unmap != surface) {
+		struct nv40_screen *nvscreen = nv40_screen(screen);
+
+		nvscreen->nvws->surface_copy(nvscreen->nvws,
+		                             surface, 0, 0,
+		                             surface_to_unmap, 0, 0,
+		                             surface->width, surface->height);
+	}
 }
 
 static void