1 files changed, 153 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv04/nv04_miptree.c b/src/gallium/drivers/nv04/nv04_miptree.c
new file mode 100644
index 0000000000..93f752faec
--- /dev/null
+++ b/src/gallium/drivers/nv04/nv04_miptree.c
@@ -0,0 +1,153 @@
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+
+#include "nv04_context.h"
+#include "nv04_screen.h"
+
+static void
+nv04_miptree_layout(struct nv04_miptree *nv04mt)
+{
+	struct pipe_texture *pt = &nv04mt->base;
+	uint width = pt->width[0], height = pt->height[0];
+	uint offset = 0;
+	int nr_faces, l;
+
+	nr_faces = 1;
+
+	for (l = 0; l <= pt->last_level; l++) {
+		pt->width[l] = width;
+		pt->height[l] = height;
+
+		pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
+		pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
+		
+		nv04mt->level[l].pitch = pt->width[0];
+		nv04mt->level[l].pitch = (nv04mt->level[l].pitch + 63) & ~63;
+
+		width  = MAX2(1, width  >> 1);
+		height = MAX2(1, height >> 1);
+	}
+
+	for (l = 0; l <= pt->last_level; l++) {
+
+		nv04mt->level[l].image_offset = 
+			CALLOC(nr_faces, sizeof(unsigned));
+		offset += nv04mt->level[l].pitch * pt->height[l];
+	}
+
+	nv04mt->total_size = offset;
+}
+
+static struct pipe_texture *
+nv04_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *pt)
+{
+	struct nv04_miptree *mt;
+
+	mt = MALLOC(sizeof(struct nv04_miptree));
+	if (!mt)
+		return NULL;
+	mt->base = *pt;
+	pipe_reference_init(&mt->base.reference, 1);
+	mt->base.screen = pscreen;
+
+	//mt->base.tex_usage |= NOUVEAU_TEXTURE_USAGE_LINEAR;
+
+	nv04_miptree_layout(mt);
+
+	mt->buffer = pscreen->buffer_create(pscreen, 256, PIPE_BUFFER_USAGE_PIXEL |
+						NOUVEAU_BUFFER_USAGE_TEXTURE,
+						mt->total_size);
+	if (!mt->buffer) {
+		printf("failed %d byte alloc\n",mt->total_size);
+		FREE(mt);
+		return NULL;
+	}
+	
+	return &mt->base;
+}
+
+static struct pipe_texture *
+nv04_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
+		     const unsigned *stride, struct pipe_buffer *pb)
+{
+	struct nv04_miptree *mt;
+
+	/* Only supports 2D, non-mipmapped textures for the moment */
+	if (pt->target != PIPE_TEXTURE_2D || pt->last_level != 0 ||
+	    pt->depth[0] != 1)
+		return NULL;
+
+	mt = CALLOC_STRUCT(nv04_miptree);
+	if (!mt)
+		return NULL;
+
+	mt->base = *pt;
+	pipe_reference_init(&mt->base.reference, 1);
+	mt->base.screen = pscreen;
+	mt->level[0].pitch = stride[0];
+	mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
+
+	pipe_buffer_reference(&mt->buffer, pb);
+	return &mt->base;
+}
+
+static void
+nv04_miptree_destroy(struct pipe_texture *pt)
+{
+	struct nv04_miptree *mt = (struct nv04_miptree *)pt;
+	int l;
+
+	pipe_buffer_reference(&mt->buffer, NULL);
+	for (l = 0; l <= pt->last_level; l++) {
+		if (mt->level[l].image_offset)
+			FREE(mt->level[l].image_offset);
+	}
+
+	FREE(mt);
+}
+
+static struct pipe_surface *
+nv04_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
+			 unsigned face, unsigned level, unsigned zslice,
+			 unsigned flags)
+{
+	struct nv04_miptree *nv04mt = (struct nv04_miptree *)pt;
+	struct nv04_surface *ns;
+
+	ns = CALLOC_STRUCT(nv04_surface);
+	if (!ns)
+		return NULL;
+	pipe_texture_reference(&ns->base.texture, pt);
+	ns->base.format = pt->format;
+	ns->base.width = pt->width[level];
+	ns->base.height = pt->height[level];
+	ns->base.usage = flags;
+	pipe_reference_init(&ns->base.reference, 1);
+	ns->base.face = face;
+	ns->base.level = level;
+	ns->base.zslice = zslice;
+	ns->pitch = nv04mt->level[level].pitch;
+
+	ns->base.offset = nv04mt->level[level].image_offset;
+
+	return &ns->base;
+}
+
+static void
+nv04_miptree_surface_del(struct pipe_surface *ps)
+{
+	pipe_texture_reference(&ps->texture, NULL);
+	FREE(ps);
+}
+
+void
+nv04_screen_init_miptree_functions(struct pipe_screen *pscreen)
+{
+	pscreen->texture_create = nv04_miptree_create;
+	pscreen->texture_blanket = nv04_miptree_blanket;
+	pscreen->texture_destroy = nv04_miptree_destroy;
+	pscreen->get_tex_surface = nv04_miptree_surface_new;
+	pscreen->tex_surface_destroy = nv04_miptree_surface_del;
+}
+