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Diffstat (limited to 'src/gallium/drivers/nv50/nv50_miptree.c')
-rw-r--r--src/gallium/drivers/nv50/nv50_miptree.c320
1 files changed, 320 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv50/nv50_miptree.c b/src/gallium/drivers/nv50/nv50_miptree.c
new file mode 100644
index 00000000000..91091d53f57
--- /dev/null
+++ b/src/gallium/drivers/nv50/nv50_miptree.c
@@ -0,0 +1,320 @@
+/*
+ * Copyright 2008 Ben Skeggs
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+
+#include "nv50_context.h"
+
+static struct pipe_texture *
+nv50_miptree_create(struct pipe_screen *pscreen, const struct pipe_texture *tmp)
+{
+ struct pipe_winsys *ws = pscreen->winsys;
+ struct nv50_miptree *mt = CALLOC_STRUCT(nv50_miptree);
+ struct pipe_texture *pt = &mt->base;
+ unsigned usage, width = tmp->width[0], height = tmp->height[0];
+ unsigned depth = tmp->depth[0];
+ int i, l;
+
+ mt->base = *tmp;
+ mt->base.refcount = 1;
+ mt->base.screen = pscreen;
+
+ usage = PIPE_BUFFER_USAGE_PIXEL;
+ switch (pt->format) {
+ case PIPE_FORMAT_Z24S8_UNORM:
+ case PIPE_FORMAT_Z16_UNORM:
+ usage |= NOUVEAU_BUFFER_USAGE_ZETA;
+ break;
+ default:
+ break;
+ }
+
+ switch (pt->target) {
+ case PIPE_TEXTURE_3D:
+ mt->image_nr = pt->depth[0];
+ break;
+ case PIPE_TEXTURE_CUBE:
+ mt->image_nr = 6;
+ break;
+ default:
+ mt->image_nr = 1;
+ break;
+ }
+
+ for (l = 0; l <= pt->last_level; l++) {
+ struct nv50_miptree_level *lvl = &mt->level[l];
+
+ pt->width[l] = width;
+ pt->height[l] = height;
+ pt->depth[l] = depth;
+ pt->nblocksx[l] = pf_get_nblocksx(&pt->block, width);
+ pt->nblocksy[l] = pf_get_nblocksy(&pt->block, height);
+
+ lvl->image_offset = CALLOC(mt->image_nr, sizeof(int));
+ lvl->image = CALLOC(mt->image_nr, sizeof(struct pipe_buffer *));
+
+ width = MAX2(1, width >> 1);
+ height = MAX2(1, height >> 1);
+ depth = MAX2(1, depth >> 1);
+ }
+
+ for (i = 0; i < mt->image_nr; i++) {
+ for (l = 0; l <= pt->last_level; l++) {
+ struct nv50_miptree_level *lvl = &mt->level[l];
+ int size;
+
+ size = align(pt->width[l], 8) * pt->block.size;
+ size = align(size, 64);
+ size *= align(pt->height[l], 8) * pt->block.size;
+
+ lvl->image[i] = ws->buffer_create(ws, 256, 0, size);
+ lvl->image_offset[i] = mt->total_size;
+
+ mt->total_size += size;
+ }
+ }
+
+ mt->buffer = ws->buffer_create(ws, 256, usage, mt->total_size);
+ if (!mt->buffer) {
+ FREE(mt);
+ return NULL;
+ }
+
+ return &mt->base;
+}
+
+static struct pipe_texture *
+nv50_miptree_blanket(struct pipe_screen *pscreen, const struct pipe_texture *pt,
+ const unsigned *stride, struct pipe_buffer *pb)
+{
+ struct nv50_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(nv50_miptree);
+ if (!mt)
+ return NULL;
+
+ mt->base = *pt;
+ mt->base.refcount = 1;
+ mt->base.screen = pscreen;
+ mt->image_nr = 1;
+ mt->level[0].image_offset = CALLOC(1, sizeof(unsigned));
+
+ pipe_buffer_reference(pscreen, &mt->buffer, pb);
+ return &mt->base;
+}
+
+static INLINE void
+mark_dirty(uint32_t *flags, unsigned image)
+{
+ flags[image / 32] |= (1 << (image % 32));
+}
+
+static INLINE void
+mark_clean(uint32_t *flags, unsigned image)
+{
+ flags[image / 32] &= ~(1 << (image % 32));
+}
+
+static INLINE int
+is_dirty(uint32_t *flags, unsigned image)
+{
+ return !!(flags[image / 32] & (1 << (image % 32)));
+}
+
+static void
+nv50_miptree_release(struct pipe_screen *pscreen, struct pipe_texture **ppt)
+{
+ struct pipe_texture *pt = *ppt;
+
+ *ppt = NULL;
+
+ if (--pt->refcount <= 0) {
+ struct nv50_miptree *mt = nv50_miptree(pt);
+
+ pipe_buffer_reference(pscreen, &mt->buffer, NULL);
+ FREE(mt);
+ }
+}
+
+void
+nv50_miptree_sync(struct pipe_screen *pscreen, struct nv50_miptree *mt,
+ unsigned level, unsigned image)
+{
+ struct nv50_screen *nvscreen = nv50_screen(pscreen);
+ struct nv50_miptree_level *lvl = &mt->level[level];
+ struct pipe_surface *dst, *src;
+ unsigned face = 0, zslice = 0;
+
+ if (!is_dirty(lvl->image_dirty_cpu, image))
+ return;
+
+ if (mt->base.target == PIPE_TEXTURE_CUBE)
+ face = image;
+ else
+ if (mt->base.target == PIPE_TEXTURE_3D)
+ zslice = image;
+
+ /* Mark as clean already - so we don't continually call this function
+ * trying to get a GPU_WRITE pipe_surface!
+ */
+ mark_clean(lvl->image_dirty_cpu, image);
+
+ /* Pretend we're doing CPU access so we get the backing pipe_surface
+ * and not a view into the larger miptree.
+ */
+ src = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
+ PIPE_BUFFER_USAGE_CPU_READ);
+
+ /* Pretend we're only reading with the GPU so surface doesn't get marked
+ * as dirtied by the GPU.
+ */
+ dst = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
+ PIPE_BUFFER_USAGE_GPU_READ);
+
+ nv50_surface_do_copy(nvscreen, dst, 0, 0, src, 0, 0, dst->width, dst->height);
+
+ pscreen->tex_surface_release(pscreen, &dst);
+ pscreen->tex_surface_release(pscreen, &src);
+}
+
+/* The reverse of the above */
+static void
+nv50_miptree_sync_cpu(struct pipe_screen *pscreen, struct nv50_miptree *mt,
+ unsigned level, unsigned image)
+{
+ struct nv50_screen *nvscreen = nv50_screen(pscreen);
+ struct nv50_miptree_level *lvl = &mt->level[level];
+ struct pipe_surface *dst, *src;
+ unsigned face = 0, zslice = 0;
+
+ if (!is_dirty(lvl->image_dirty_gpu, image))
+ return;
+
+ if (mt->base.target == PIPE_TEXTURE_CUBE)
+ face = image;
+ else
+ if (mt->base.target == PIPE_TEXTURE_3D)
+ zslice = image;
+
+ mark_clean(lvl->image_dirty_gpu, image);
+
+ src = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
+ PIPE_BUFFER_USAGE_GPU_READ);
+ dst = pscreen->get_tex_surface(pscreen, &mt->base, face, level, zslice,
+ PIPE_BUFFER_USAGE_CPU_READ);
+
+ nv50_surface_do_copy(nvscreen, dst, 0, 0, src, 0, 0, dst->width, dst->height);
+
+ pscreen->tex_surface_release(pscreen, &dst);
+ pscreen->tex_surface_release(pscreen, &src);
+}
+
+static struct pipe_surface *
+nv50_miptree_surface_new(struct pipe_screen *pscreen, struct pipe_texture *pt,
+ unsigned face, unsigned level, unsigned zslice,
+ unsigned flags)
+{
+ struct nv50_miptree *mt = nv50_miptree(pt);
+ struct nv50_miptree_level *lvl = &mt->level[level];
+ struct pipe_surface *ps;
+ int img;
+
+ if (pt->target == PIPE_TEXTURE_CUBE)
+ img = face;
+ else
+ if (pt->target == PIPE_TEXTURE_3D)
+ img = zslice;
+ else
+ img = 0;
+
+ ps = CALLOC_STRUCT(pipe_surface);
+ if (!ps)
+ return NULL;
+ pipe_texture_reference(&ps->texture, pt);
+ ps->format = pt->format;
+ ps->width = pt->width[level];
+ ps->height = pt->height[level];
+ ps->block = pt->block;
+ ps->nblocksx = pt->nblocksx[level];
+ ps->nblocksy = pt->nblocksy[level];
+ ps->stride = ps->width * ps->block.size;
+ ps->usage = flags;
+ ps->status = PIPE_SURFACE_STATUS_DEFINED;
+ ps->refcount = 1;
+ ps->face = face;
+ ps->level = level;
+ ps->zslice = zslice;
+
+ if (flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE) {
+ assert(!(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE));
+ nv50_miptree_sync_cpu(pscreen, mt, level, img);
+
+ ps->offset = 0;
+ pipe_texture_reference(&ps->texture, pt);
+
+ if (flags & PIPE_BUFFER_USAGE_CPU_WRITE)
+ mark_dirty(lvl->image_dirty_cpu, img);
+ } else {
+ nv50_miptree_sync(pscreen, mt, level, img);
+
+ ps->offset = lvl->image_offset[img];
+ pipe_texture_reference(&ps->texture, pt);
+
+ if (flags & PIPE_BUFFER_USAGE_GPU_WRITE)
+ mark_dirty(lvl->image_dirty_gpu, img);
+ }
+
+ return ps;
+}
+
+static void
+nv50_miptree_surface_del(struct pipe_screen *pscreen,
+ struct pipe_surface **psurface)
+{
+ struct pipe_surface *ps = *psurface;
+ struct nv50_surface *s = nv50_surface(ps);
+
+ *psurface = NULL;
+
+ if (--ps->refcount <= 0) {
+ pipe_texture_reference(&ps->texture, NULL);
+ FREE(s);
+ }
+}
+
+void
+nv50_screen_init_miptree_functions(struct pipe_screen *pscreen)
+{
+ pscreen->texture_create = nv50_miptree_create;
+ pscreen->texture_blanket = nv50_miptree_blanket;
+ pscreen->texture_release = nv50_miptree_release;
+ pscreen->get_tex_surface = nv50_miptree_surface_new;
+ pscreen->tex_surface_release = nv50_miptree_surface_del;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 01:49:27 +0000