diff options
Diffstat (limited to 'src/gallium/drivers/nv40/nv40_miptree.c')
-rw-r--r-- | src/gallium/drivers/nv40/nv40_miptree.c | 104 |
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; +} + |