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Diffstat (limited to 'src/gallium/drivers/nv40/nv40_miptree.c')
-rw-r--r--src/gallium/drivers/nv40/nv40_miptree.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv40/nv40_miptree.c b/src/gallium/drivers/nv40/nv40_miptree.c
new file mode 100644
index 00000000000..92e6b3a43df
--- /dev/null
+++ b/src/gallium/drivers/nv40/nv40_miptree.c
@@ -0,0 +1,104 @@
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_util.h"
+#include "pipe/p_inlines.h"
+
+#include "nv40_context.h"
+
+static void
+nv40_miptree_layout(struct nv40_miptree *nv40mt)
+{
+ struct pipe_texture *pt = &nv40mt->base;
+ boolean swizzled = FALSE;
+ uint width = pt->width[0], height = pt->height[0], depth = pt->depth[0];
+ uint offset = 0;
+ int nr_faces, l, f;
+
+ if (pt->target == PIPE_TEXTURE_CUBE) {
+ nr_faces = 6;
+ } else
+ if (pt->target == PIPE_TEXTURE_3D) {
+ nr_faces = pt->depth[0];
+ } else {
+ nr_faces = 1;
+ }
+
+ for (l = 0; l <= pt->last_level; l++) {
+ pt->width[l] = width;
+ pt->height[l] = height;
+ pt->depth[l] = depth;
+
+ if (swizzled)
+ nv40mt->level[l].pitch = pt->width[l] * pt->cpp;
+ else
+ nv40mt->level[l].pitch = pt->width[0] * pt->cpp;
+ nv40mt->level[l].pitch = (nv40mt->level[l].pitch + 63) & ~63;
+
+ nv40mt->level[l].image_offset =
+ CALLOC(nr_faces, sizeof(unsigned));
+
+ width = MAX2(1, width >> 1);
+ height = MAX2(1, height >> 1);
+ depth = MAX2(1, depth >> 1);
+
+ }
+
+ for (f = 0; f < nr_faces; f++) {
+ for (l = 0; l <= pt->last_level; l++) {
+ nv40mt->level[l].image_offset[f] = offset;
+ offset += nv40mt->level[l].pitch * pt->height[l];
+ }
+ }
+
+ nv40mt->total_size = offset;
+}
+
+static struct pipe_texture *
+nv40_miptree_create(struct pipe_context *pipe, const struct pipe_texture *pt)
+{
+ struct pipe_winsys *ws = pipe->winsys;
+ struct nv40_miptree *mt;
+
+ mt = MALLOC(sizeof(struct nv40_miptree));
+ if (!mt)
+ return NULL;
+ mt->base = *pt;
+ nv40_miptree_layout(mt);
+
+ mt->buffer = ws->buffer_create(ws, 256, PIPE_BUFFER_USAGE_PIXEL,
+ mt->total_size);
+ if (!mt->buffer) {
+ free(mt);
+ return NULL;
+ }
+
+ return &mt->base;
+}
+
+static void
+nv40_miptree_release(struct pipe_context *pipe, struct pipe_texture **pt)
+{
+ struct pipe_winsys *ws = pipe->winsys;
+ struct pipe_texture *mt = *pt;
+
+ *pt = NULL;
+ if (--mt->refcount <= 0) {
+ struct nv40_miptree *nv40mt = (struct nv40_miptree *)mt;
+ int l;
+
+ pipe_buffer_reference(ws, &nv40mt->buffer, NULL);
+ for (l = 0; l <= mt->last_level; l++) {
+ if (nv40mt->level[l].image_offset)
+ free(nv40mt->level[l].image_offset);
+ }
+ free(nv40mt);
+ }
+}
+
+void
+nv40_init_miptree_functions(struct nv40_context *nv40)
+{
+ nv40->pipe.texture_create = nv40_miptree_create;
+ nv40->pipe.texture_release = nv40_miptree_release;
+}
+