1 files changed, 349 insertions, 0 deletions

diff --git a/src/gallium/drivers/virgl/virgl_texture.c b/src/gallium/drivers/virgl/virgl_texture.c
new file mode 100644
index 00000000000..97d02eba567
--- /dev/null
+++ b/src/gallium/drivers/virgl/virgl_texture.c
@@ -0,0 +1,349 @@
+/*
+ * Copyright 2014, 2015 Red Hat.
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 (including the next
+ * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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 "util/u_memory.h"
+#include "util/u_format.h"
+#include "virgl.h"
+#include "virgl_resource.h"
+#include "virgl_context.h"
+
+static void virgl_copy_region_with_blit(struct pipe_context *pipe,
+                                        struct pipe_resource *dst,
+                                        unsigned dst_level,
+                                        unsigned dstx, unsigned dsty, unsigned dstz,
+                                        struct pipe_resource *src,
+                                        unsigned src_level,
+                                        const struct pipe_box *src_box)
+{
+   struct pipe_blit_info blit;
+
+   memset(&blit, 0, sizeof(blit));
+   blit.src.resource = src;
+   blit.src.format = src->format;
+   blit.src.level = src_level;
+   blit.src.box = *src_box;
+   blit.dst.resource = dst;
+   blit.dst.format = dst->format;
+   blit.dst.level = dst_level;
+   blit.dst.box.x = dstx;
+   blit.dst.box.y = dsty;
+   blit.dst.box.z = dstz;
+   blit.dst.box.width = src_box->width;
+   blit.dst.box.height = src_box->height;
+   blit.dst.box.depth = src_box->depth;
+   blit.mask = util_format_get_mask(src->format) &
+      util_format_get_mask(dst->format);
+   blit.filter = PIPE_TEX_FILTER_NEAREST;
+
+   if (blit.mask) {
+      pipe->blit(pipe, &blit);
+   }
+}
+static void virgl_init_temp_resource_from_box(struct pipe_resource *res,
+                                              struct pipe_resource *orig,
+                                              const struct pipe_box *box,
+                                              unsigned level, unsigned flags)
+{
+   memset(res, 0, sizeof(*res));
+   res->format = orig->format;
+   res->width0 = box->width;
+   res->height0 = box->height;
+   res->depth0 = 1;
+   res->array_size = 1;
+   res->usage = PIPE_USAGE_STAGING;
+   res->flags = flags;
+
+   /* We must set the correct texture target and dimensions for a 3D box. */
+   if (box->depth > 1 && util_max_layer(orig, level) > 0)
+      res->target = orig->target;
+   else
+      res->target = PIPE_TEXTURE_2D;
+
+   switch (res->target) {
+   case PIPE_TEXTURE_1D_ARRAY:
+   case PIPE_TEXTURE_2D_ARRAY:
+   case PIPE_TEXTURE_CUBE_ARRAY:
+      res->array_size = box->depth;
+      break;
+   case PIPE_TEXTURE_3D:
+      res->depth0 = box->depth;
+      break;
+   default:
+      break;
+   }
+}
+
+static unsigned
+vrend_get_tex_image_offset(const struct virgl_texture *res,
+                           unsigned level, unsigned layer)
+{
+   const struct pipe_resource *pres = &res->base.u.b;
+   const unsigned hgt = u_minify(pres->height0, level);
+   const unsigned nblocksy = util_format_get_nblocksy(pres->format, hgt);
+   unsigned offset = res->level_offset[level];
+
+   if (pres->target == PIPE_TEXTURE_CUBE ||
+       pres->target == PIPE_TEXTURE_CUBE_ARRAY ||
+       pres->target == PIPE_TEXTURE_3D ||
+       pres->target == PIPE_TEXTURE_2D_ARRAY) {
+      offset += layer * nblocksy * res->stride[level];
+   }
+   else if (pres->target == PIPE_TEXTURE_1D_ARRAY) {
+      offset += layer * res->stride[level];
+   }
+   else {
+      assert(layer == 0);
+   }
+
+   return offset;
+}
+
+static void *virgl_texture_transfer_map(struct pipe_context *ctx,
+                                        struct pipe_resource *resource,
+                                        unsigned level,
+                                        unsigned usage,
+                                        const struct pipe_box *box,
+                                        struct pipe_transfer **transfer)
+{
+   struct virgl_context *vctx = (struct virgl_context *)ctx;
+   struct virgl_screen *vs = virgl_screen(ctx->screen);
+   struct virgl_texture *vtex = (struct virgl_texture *)resource;
+   enum pipe_format format = resource->format;
+   struct virgl_transfer *trans;
+   void *ptr;
+   boolean readback = TRUE;
+   uint32_t offset;
+   struct virgl_hw_res *hw_res;
+   const unsigned h = u_minify(vtex->base.u.b.height0, level);
+   const unsigned nblocksy = util_format_get_nblocksy(format, h);
+   bool is_depth = util_format_has_depth(util_format_description(resource->format));
+   uint32_t l_stride;
+   bool doflushwait;
+
+   doflushwait = virgl_res_needs_flush_wait(vctx, &vtex->base, usage);
+   if (doflushwait)
+      ctx->flush(ctx, NULL, 0);
+
+   trans = util_slab_alloc(&vctx->texture_transfer_pool);
+   if (trans == NULL)
+      return NULL;
+
+   trans->base.resource = resource;
+   trans->base.level = level;
+   trans->base.usage = usage;
+   trans->base.box = *box;
+   trans->base.stride = vtex->stride[level];
+   trans->base.layer_stride = trans->base.stride * nblocksy;
+
+   if (resource->target != PIPE_TEXTURE_3D &&
+       resource->target != PIPE_TEXTURE_CUBE &&
+       resource->target != PIPE_TEXTURE_1D_ARRAY &&
+       resource->target != PIPE_TEXTURE_2D_ARRAY &&
+       resource->target != PIPE_TEXTURE_CUBE_ARRAY)
+      l_stride = 0;
+   else
+      l_stride = trans->base.layer_stride;
+
+   if (is_depth && resource->nr_samples > 1) {
+      struct pipe_resource tmp_resource;
+      virgl_init_temp_resource_from_box(&tmp_resource, resource, box,
+                                        level, 0);
+
+      trans->resolve_tmp = (struct virgl_resource *)ctx->screen->resource_create(ctx->screen, &tmp_resource);
+
+      virgl_copy_region_with_blit(ctx, &trans->resolve_tmp->u.b, 0, 0, 0, 0, resource, level, box);
+      ctx->flush(ctx, NULL, 0);
+      /* we want to do a resolve blit into the temporary */
+      hw_res = trans->resolve_tmp->hw_res;
+      offset = 0;
+   } else {
+      offset = vrend_get_tex_image_offset(vtex, level, box->z);
+
+      offset += box->y / util_format_get_blockheight(format) * trans->base.stride +
+      box->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
+      hw_res = vtex->base.hw_res;
+      trans->resolve_tmp = NULL;
+   }
+
+   readback = virgl_res_needs_readback(vctx, &vtex->base, usage);
+   if (readback)
+      vs->vws->transfer_get(vs->vws, hw_res, box, trans->base.stride, l_stride, offset, level);
+
+   if (doflushwait || readback)
+      vs->vws->resource_wait(vs->vws, vtex->base.hw_res);
+
+   ptr = vs->vws->resource_map(vs->vws, hw_res);
+   if (!ptr) {
+      return NULL;
+   }
+
+   trans->offset = offset;
+   *transfer = &trans->base;
+
+   return ptr + trans->offset;
+}
+
+static void virgl_texture_transfer_unmap(struct pipe_context *ctx,
+                                         struct pipe_transfer *transfer)
+{
+   struct virgl_context *vctx = (struct virgl_context *)ctx;
+   struct virgl_transfer *trans = (struct virgl_transfer *)transfer;
+   struct virgl_texture *vtex = (struct virgl_texture *)transfer->resource;
+   uint32_t l_stride;
+
+   if (transfer->resource->target != PIPE_TEXTURE_3D &&
+       transfer->resource->target != PIPE_TEXTURE_CUBE &&
+       transfer->resource->target != PIPE_TEXTURE_1D_ARRAY &&
+       transfer->resource->target != PIPE_TEXTURE_2D_ARRAY &&
+       transfer->resource->target != PIPE_TEXTURE_CUBE_ARRAY)
+      l_stride = 0;
+   else
+      l_stride = trans->base.layer_stride;
+
+   if (trans->base.usage & PIPE_TRANSFER_WRITE) {
+      if (!(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) {
+         struct virgl_screen *vs = virgl_screen(ctx->screen);
+         vtex->base.clean = FALSE;
+         vctx->num_transfers++;
+         vs->vws->transfer_put(vs->vws, vtex->base.hw_res,
+                               &transfer->box, trans->base.stride, l_stride, trans->offset, transfer->level);
+
+      }
+   }
+
+   if (trans->resolve_tmp)
+      pipe_resource_reference((struct pipe_resource **)&trans->resolve_tmp, NULL);
+
+   util_slab_free(&vctx->texture_transfer_pool, trans);
+}
+
+
+static boolean
+vrend_resource_layout(struct virgl_texture *res,
+                      uint32_t *total_size)
+{
+   struct pipe_resource *pt = &res->base.u.b;
+   unsigned level;
+   unsigned width = pt->width0;
+   unsigned height = pt->height0;
+   unsigned depth = pt->depth0;
+   unsigned buffer_size = 0;
+
+   for (level = 0; level <= pt->last_level; level++) {
+      unsigned slices;
+
+      if (pt->target == PIPE_TEXTURE_CUBE)
+         slices = 6;
+      else if (pt->target == PIPE_TEXTURE_3D)
+         slices = depth;
+      else
+         slices = pt->array_size;
+
+      res->stride[level] = util_format_get_stride(pt->format, width);
+      res->level_offset[level] = buffer_size;
+
+      buffer_size += (util_format_get_nblocksy(pt->format, height) *
+                      slices * res->stride[level]);
+
+      width = u_minify(width, 1);
+      height = u_minify(height, 1);
+      depth = u_minify(depth, 1);
+   }
+
+   if (pt->nr_samples <= 1)
+      *total_size = buffer_size;
+   else /* don't create guest backing store for MSAA */
+      *total_size = 0;
+   return TRUE;
+}
+
+static boolean virgl_texture_get_handle(struct pipe_screen *screen,
+                                         struct pipe_resource *ptex,
+                                         struct winsys_handle *whandle)
+{
+   struct virgl_screen *vs = virgl_screen(screen);
+   struct virgl_texture *vtex = (struct virgl_texture *)ptex;
+
+   return vs->vws->resource_get_handle(vs->vws, vtex->base.hw_res, vtex->stride[0], whandle);
+}
+
+static void virgl_texture_destroy(struct pipe_screen *screen,
+                                  struct pipe_resource *res)
+{
+   struct virgl_screen *vs = virgl_screen(screen);
+   struct virgl_texture *vtex = (struct virgl_texture *)res;
+   vs->vws->resource_unref(vs->vws, vtex->base.hw_res);
+   FREE(vtex);
+}
+
+static const struct u_resource_vtbl virgl_texture_vtbl =
+{
+   virgl_texture_get_handle,            /* get_handle */
+   virgl_texture_destroy,               /* resource_destroy */
+   virgl_texture_transfer_map,          /* transfer_map */
+   NULL,                                /* transfer_flush_region */
+   virgl_texture_transfer_unmap,        /* transfer_unmap */
+   NULL                                 /* transfer_inline_write */
+};
+
+struct pipe_resource *
+virgl_texture_from_handle(struct virgl_screen *vs,
+                          const struct pipe_resource *template,
+                          struct winsys_handle *whandle)
+{
+   struct virgl_texture *tex;
+   uint32_t size;
+
+   tex = CALLOC_STRUCT(virgl_texture);
+   tex->base.u.b = *template;
+   tex->base.u.b.screen = &vs->base;
+   pipe_reference_init(&tex->base.u.b.reference, 1);
+   tex->base.u.vtbl = &virgl_texture_vtbl;
+   vrend_resource_layout(tex, &size);
+
+   tex->base.hw_res = vs->vws->resource_create_from_handle(vs->vws, whandle);
+   return &tex->base.u.b;
+}
+
+struct pipe_resource *virgl_texture_create(struct virgl_screen *vs,
+                                           const struct pipe_resource *template)
+{
+   struct virgl_texture *tex;
+   uint32_t size;
+   unsigned vbind;
+
+   tex = CALLOC_STRUCT(virgl_texture);
+   tex->base.clean = TRUE;
+   tex->base.u.b = *template;
+   tex->base.u.b.screen = &vs->base;
+   pipe_reference_init(&tex->base.u.b.reference, 1);
+   tex->base.u.vtbl = &virgl_texture_vtbl;
+   vrend_resource_layout(tex, &size);
+
+   vbind = pipe_to_virgl_bind(template->bind);
+   tex->base.hw_res = vs->vws->resource_create(vs->vws, template->target, template->format, vbind, template->width0, template->height0, template->depth0, template->array_size, template->last_level, template->nr_samples, size);
+   if (!tex->base.hw_res) {
+      FREE(tex);
+      return NULL;
+   }
+   return &tex->base.u.b;
+}