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Diffstat (limited to 'src/mesa/pipe/softpipe/sp_surface.c')
-rw-r--r--src/mesa/pipe/softpipe/sp_surface.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/mesa/pipe/softpipe/sp_surface.c b/src/mesa/pipe/softpipe/sp_surface.c
index 819243ae6e..6512f1d789 100644
--- a/src/mesa/pipe/softpipe/sp_surface.c
+++ b/src/mesa/pipe/softpipe/sp_surface.c
@@ -351,12 +351,54 @@ sp_surface_alloc(struct pipe_context *pipe, GLenum format)
return NULL;
sps->surface.format = format;
+ sps->surface.refcount = 1;
init_quad_funcs(sps);
return &sps->surface;
}
+
+
+
+/**
+ * Called via pipe->get_tex_surface()
+ * XXX is this in the right place?
+ */
+struct pipe_surface *
+softpipe_get_tex_surface(struct pipe_context *pipe,
+ struct pipe_mipmap_tree *mt,
+ GLuint face, GLuint level, GLuint zslice)
+{
+ struct pipe_surface *ps;
+ GLuint offset; /* in bytes */
+
+ offset = mt->level[level].level_offset;
+
+ if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
+ offset += mt->level[level].image_offset[face] * mt->cpp;
+ }
+ else if (mt->target == GL_TEXTURE_3D) {
+ offset += mt->level[level].image_offset[zslice] * mt->cpp;
+ }
+ else {
+ assert(face == 0);
+ assert(zslice == 0);
+ }
+
+ ps = pipe->surface_alloc(pipe, mt->internal_format);
+ if (ps) {
+ assert(ps->format);
+ assert(ps->refcount);
+ ps->region = mt->region;
+ ps->width = mt->level[level].width;
+ ps->height = mt->level[level].height;
+ ps->offset = offset;
+ }
+ return ps;
+}
+
+
void
sp_init_surface_functions(struct softpipe_context *sp)
{