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/*

 * Copyright 2012 Red Hat Inc.

 *

 * 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 OR COPYRIGHT HOLDERS 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.

 *

 * Authors: Ben Skeggs

 *

 */

#include "util/u_format.h"

#include "util/u_inlines.h"

#include "util/u_surface.h"

#include "nouveau/nv_m2mf.xml.h"

#include "nv30_screen.h"

#include "nv30_context.h"

#include "nv30_resource.h"

#include "nv30_transfer.h"

static INLINE unsigned

layer_offset(struct pipe_resource *pt, unsigned level, unsigned layer)

{

   struct nv30_miptree *mt = nv30_miptree(pt);

   struct nv30_miptree_level *lvl = &mt->level[level];

   if (pt->target == PIPE_TEXTURE_CUBE)

      return (layer * mt->layer_size) + lvl->offset;

   return lvl->offset + (layer * lvl->zslice_size);

}

static boolean

nv30_miptree_get_handle(struct pipe_screen *pscreen,

                        struct pipe_resource *pt,

                        struct winsys_handle *handle)

{

   struct nv30_miptree *mt = nv30_miptree(pt);

   unsigned stride;

   if (!mt || !mt->base.bo)

      return FALSE;

   stride = mt->level[0].pitch;

   return nouveau_screen_bo_get_handle(pscreen, mt->base.bo, stride, handle);

}

static void

nv30_miptree_destroy(struct pipe_screen *pscreen, struct pipe_resource *pt)

{

   struct nv30_miptree *mt = nv30_miptree(pt);

   nouveau_bo_ref(NULL, &mt->base.bo);

   FREE(mt);

}

struct nv30_transfer {

   struct pipe_transfer base;

   struct nv30_rect img;

   struct nv30_rect tmp;

   unsigned nblocksx;

   unsigned nblocksy;

};

static INLINE struct nv30_transfer *

nv30_transfer(struct pipe_transfer *ptx)

{

   return (struct nv30_transfer *)ptx;

}

static INLINE void

define_rect(struct pipe_resource *pt, unsigned level, unsigned z,

            unsigned x, unsigned y, unsigned w, unsigned h,

            struct nv30_rect *rect)

{

   struct nv30_miptree *mt = nv30_miptree(pt);

   struct nv30_miptree_level *lvl = &mt->level[level];

   rect->w = u_minify(pt->width0, level) << mt->ms_x;

   rect->w = util_format_get_nblocksx(pt->format, rect->w);

   rect->h = u_minify(pt->height0, level) << mt->ms_y;

   rect->h = util_format_get_nblocksy(pt->format, rect->h);

   rect->d = 1;

   rect->z = 0;

   if (mt->swizzled) {

      if (pt->target == PIPE_TEXTURE_3D) {

         rect->d = u_minify(pt->depth0, level);

         rect->z = z; z = 0;

      }

      rect->pitch = 0;

   } else {

      rect->pitch = lvl->pitch;

   }

   rect->bo     = mt->base.bo;

   rect->domain = NOUVEAU_BO_VRAM;

   rect->offset = layer_offset(pt, level, z);

   rect->cpp    = util_format_get_blocksize(pt->format);

   rect->x0     = util_format_get_nblocksx(pt->format, x) << mt->ms_x;

   rect->y0     = util_format_get_nblocksy(pt->format, y) << mt->ms_y;

   rect->x1     = rect->x0 + (w << mt->ms_x);

   rect->y1     = rect->y0 + (h << mt->ms_y);

}

void

nv30_resource_copy_region(struct pipe_context *pipe,

                          struct pipe_resource *dstres, unsigned dst_level,

                          unsigned dstx, unsigned dsty, unsigned dstz,

                          struct pipe_resource *srcres, unsigned src_level,

                          const struct pipe_box *src_box)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nv30_rect src, dst;

   if (dstres->target == PIPE_BUFFER && srcres->target == PIPE_BUFFER) {

      nouveau_copy_buffer(&nv30->base,

                          nv04_resource(dstres), dstx,

                          nv04_resource(srcres), src_box->x, src_box->width);

      return;

   }

   define_rect(srcres, src_level, src_box->z, src_box->x, src_box->y,

                       src_box->width, src_box->height, &src);

   define_rect(dstres, dst_level, dstz, dstx, dsty,

                       src_box->width, src_box->height, &dst);

   nv30_transfer_rect(nv30, NEAREST, &src, &dst);

}

void

nv30_resource_resolve(struct pipe_context *pipe,

                      const struct pipe_resolve_info *info)

{

#if 0

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nv30_rect src, dst;

   define_rect(info->src.res, 0, 0, info->src.x0, info->src.y0,

               info->src.x1 - info->src.x0, info->src.y1 - info->src.y0, &src);

   define_rect(info->dst.res, info->dst.level, 0, info->dst.x0, info->dst.y0,

               info->dst.x1 - info->dst.x0, info->dst.y1 - info->dst.y0, &dst);

   nv30_transfer_rect(nv30, BILINEAR, &src, &dst);

#endif

}

void

nv30_blit(struct pipe_context *pipe,

          const struct pipe_blit_info *blit_info)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct pipe_blit_info info = *blit_info;

   if (info.src.resource->nr_samples > 1 &&

       info.dst.resource->nr_samples <= 1 &&

       !util_format_is_depth_or_stencil(info.src.resource->format) &&

       !util_format_is_pure_integer(info.src.resource->format)) {

      debug_printf("nv30: color resolve unimplemented\n");

      return;

   }

   if (util_try_blit_via_copy_region(pipe, &info)) {

      return; /* done */

   }

   if (info.mask & PIPE_MASK_S) {

      debug_printf("nv30: cannot blit stencil, skipping\n");

      info.mask &= ~PIPE_MASK_S;

   }

   if (!util_blitter_is_blit_supported(nv30->blitter, &info)) {

      debug_printf("nv30: blit unsupported %s -> %s\n",

                   util_format_short_name(info.src.resource->format),

                   util_format_short_name(info.dst.resource->format));

      return;

   }

   /* XXX turn off occlusion queries */

   util_blitter_save_vertex_buffer_slot(nv30->blitter, nv30->vtxbuf);

   util_blitter_save_vertex_elements(nv30->blitter, nv30->vertex);

   util_blitter_save_vertex_shader(nv30->blitter, nv30->vertprog.program);

   util_blitter_save_rasterizer(nv30->blitter, nv30->rast);

   util_blitter_save_viewport(nv30->blitter, &nv30->viewport);

   util_blitter_save_scissor(nv30->blitter, &nv30->scissor);

   util_blitter_save_fragment_shader(nv30->blitter, nv30->fragprog.program);

   util_blitter_save_blend(nv30->blitter, nv30->blend);

   util_blitter_save_depth_stencil_alpha(nv30->blitter,

                                         nv30->zsa);

   util_blitter_save_stencil_ref(nv30->blitter, &nv30->stencil_ref);

   util_blitter_save_sample_mask(nv30->blitter, nv30->sample_mask);

   util_blitter_save_framebuffer(nv30->blitter, &nv30->framebuffer);

   util_blitter_save_fragment_sampler_states(nv30->blitter,

                     nv30->fragprog.num_samplers,

                     (void**)nv30->fragprog.samplers);

   util_blitter_save_fragment_sampler_views(nv30->blitter,

                     nv30->fragprog.num_textures, nv30->fragprog.textures);

   util_blitter_save_render_condition(nv30->blitter, nv30->render_cond_query,

                                      nv30->render_cond_cond, nv30->render_cond_mode);

   util_blitter_blit(nv30->blitter, &info);

}

static void *

nv30_miptree_transfer_map(struct pipe_context *pipe, struct pipe_resource *pt,

                          unsigned level, unsigned usage,

                          const struct pipe_box *box,

                          struct pipe_transfer **ptransfer)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nouveau_device *dev = nv30->screen->base.device;

   struct nv30_transfer *tx;

   unsigned access = 0;

   int ret;

   tx = CALLOC_STRUCT(nv30_transfer);

   if (!tx)

      return NULL;

   pipe_resource_reference(&tx->base.resource, pt);

   tx->base.level = level;

   tx->base.usage = usage;

   tx->base.box = *box;

   tx->base.stride = util_format_get_nblocksx(pt->format, box->width) *

                     util_format_get_blocksize(pt->format);

   tx->base.layer_stride = util_format_get_nblocksy(pt->format, box->height) *

                           tx->base.stride;

   tx->nblocksx = util_format_get_nblocksx(pt->format, box->width);

   tx->nblocksy = util_format_get_nblocksy(pt->format, box->height);

   define_rect(pt, level, box->z, box->x, box->y,

                   tx->nblocksx, tx->nblocksy, &tx->img);

   ret = nouveau_bo_new(dev, NOUVEAU_BO_GART | NOUVEAU_BO_MAP, 0,

                        tx->base.layer_stride, NULL, &tx->tmp.bo);

   if (ret) {

      pipe_resource_reference(&tx->base.resource, NULL);

      FREE(tx);

      return NULL;

   }

   tx->tmp.domain = NOUVEAU_BO_GART;

   tx->tmp.offset = 0;

   tx->tmp.pitch  = tx->base.stride;

   tx->tmp.cpp    = tx->img.cpp;

   tx->tmp.w      = tx->nblocksx;

   tx->tmp.h      = tx->nblocksy;

   tx->tmp.d      = 1;

   tx->tmp.x0     = 0;

   tx->tmp.y0     = 0;

   tx->tmp.x1     = tx->tmp.w;

   tx->tmp.y1     = tx->tmp.h;

   tx->tmp.z      = 0;

   if (usage & PIPE_TRANSFER_READ)

      nv30_transfer_rect(nv30, NEAREST, &tx->img, &tx->tmp);

   if (tx->tmp.bo->map) {

      *ptransfer = &tx->base;

      return tx->tmp.bo->map;

   }

   if (usage & PIPE_TRANSFER_READ)

      access |= NOUVEAU_BO_RD;

   if (usage & PIPE_TRANSFER_WRITE)

      access |= NOUVEAU_BO_WR;

   ret = nouveau_bo_map(tx->tmp.bo, access, nv30->base.client);

   if (ret) {

      pipe_resource_reference(&tx->base.resource, NULL);

      FREE(tx);

      return NULL;

   }

   *ptransfer = &tx->base;

   return tx->tmp.bo->map;

}

static void

nv30_miptree_transfer_unmap(struct pipe_context *pipe,

                            struct pipe_transfer *ptx)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nv30_transfer *tx = nv30_transfer(ptx);

   if (ptx->usage & PIPE_TRANSFER_WRITE)

      nv30_transfer_rect(nv30, NEAREST, &tx->tmp, &tx->img);

   nouveau_bo_ref(NULL, &tx->tmp.bo);

   pipe_resource_reference(&ptx->resource, NULL);

   FREE(tx);

}

const struct u_resource_vtbl nv30_miptree_vtbl = {

   nv30_miptree_get_handle,

   nv30_miptree_destroy,

   nv30_miptree_transfer_map,

   u_default_transfer_flush_region,

   nv30_miptree_transfer_unmap,

   u_default_transfer_inline_write

};

struct pipe_resource *

nv30_miptree_create(struct pipe_screen *pscreen,

                    const struct pipe_resource *tmpl)

{

   struct nouveau_device *dev = nouveau_screen(pscreen)->device;

   struct nv30_miptree *mt = CALLOC_STRUCT(nv30_miptree);

   struct pipe_resource *pt = &mt->base.base;

   unsigned blocksz, size;

   unsigned w, h, d, l;

   int ret;

   switch (tmpl->nr_samples) {

   case 4:

      mt->ms_mode = 0x00004000;

      mt->ms_x = 1;

      mt->ms_y = 1;

      break;

   case 2:

      mt->ms_mode = 0x00003000;

      mt->ms_x = 1;

      mt->ms_y = 0;

      break;

   default:

      mt->ms_mode = 0x00000000;

      mt->ms_x = 0;

      mt->ms_y = 0;

      break;

   }

   mt->base.vtbl = &nv30_miptree_vtbl;

   *pt = *tmpl;

   pipe_reference_init(&pt->reference, 1);

   pt->screen = pscreen;

   w = pt->width0 << mt->ms_x;

   h = pt->height0 << mt->ms_y;

   d = (pt->target == PIPE_TEXTURE_3D) ? pt->depth0 : 1;

   blocksz = util_format_get_blocksize(pt->format);

   if ((pt->target == PIPE_TEXTURE_RECT) ||

       !util_is_power_of_two(pt->width0) ||

       !util_is_power_of_two(pt->height0) ||

       !util_is_power_of_two(pt->depth0) ||

       util_format_is_compressed(pt->format) ||

       util_format_is_float(pt->format) || mt->ms_mode) {

      mt->uniform_pitch = util_format_get_nblocksx(pt->format, w) * blocksz;

      mt->uniform_pitch = align(mt->uniform_pitch, 64);

   }

   if (!mt->uniform_pitch)

      mt->swizzled = TRUE;

   size = 0;

   for (l = 0; l <= pt->last_level; l++) {

      struct nv30_miptree_level *lvl = &mt->level[l];

      unsigned nbx = util_format_get_nblocksx(pt->format, w);

      unsigned nby = util_format_get_nblocksx(pt->format, h);

      lvl->offset = size;

      lvl->pitch  = mt->uniform_pitch;

      if (!lvl->pitch)

         lvl->pitch = nbx * blocksz;

      lvl->zslice_size = lvl->pitch * nby;

      size += lvl->zslice_size * d;

      w = u_minify(w, 1);

      h = u_minify(h, 1);

      d = u_minify(d, 1);

   }

   mt->layer_size = size;

   if (pt->target == PIPE_TEXTURE_CUBE) {

      if (!mt->uniform_pitch)

         mt->layer_size = align(mt->layer_size, 128);

      size = mt->layer_size * 6;

   }

   ret = nouveau_bo_new(dev, NOUVEAU_BO_VRAM, 256, size, NULL, &mt->base.bo);

   if (ret) {

      FREE(mt);

      return NULL;

   }

   mt->base.domain = NOUVEAU_BO_VRAM;

   return &mt->base.base;

}

struct pipe_resource *

nv30_miptree_from_handle(struct pipe_screen *pscreen,

                         const struct pipe_resource *tmpl,

                         struct winsys_handle *handle)

{

   struct nv30_miptree *mt;

   unsigned stride;

   /* only supports 2D, non-mipmapped textures for the moment */

   if ((tmpl->target != PIPE_TEXTURE_2D &&

        tmpl->target != PIPE_TEXTURE_RECT) ||

       tmpl->last_level != 0 ||

       tmpl->depth0 != 1 ||

       tmpl->array_size > 1)

      return NULL;

   mt = CALLOC_STRUCT(nv30_miptree);

   if (!mt)

      return NULL;

   mt->base.bo = nouveau_screen_bo_from_handle(pscreen, handle, &stride);

   if (mt->base.bo == NULL) {

      FREE(mt);

      return NULL;

   }

   mt->base.base = *tmpl;

   mt->base.vtbl = &nv30_miptree_vtbl;

   pipe_reference_init(&mt->base.base.reference, 1);

   mt->base.base.screen = pscreen;

   mt->uniform_pitch = stride;

   mt->level[0].pitch = mt->uniform_pitch;

   mt->level[0].offset = 0;

   /* no need to adjust bo reference count */

   return &mt->base.base;

}

struct pipe_surface *

nv30_miptree_surface_new(struct pipe_context *pipe,

                         struct pipe_resource *pt,

                         const struct pipe_surface *tmpl)

{

   struct nv30_miptree *mt = nv30_miptree(pt); /* guaranteed */

   struct nv30_surface *ns;

   struct pipe_surface *ps;

   struct nv30_miptree_level *lvl = &mt->level[tmpl->u.tex.level];

   ns = CALLOC_STRUCT(nv30_surface);

   if (!ns)

      return NULL;

   ps = &ns->base;

   pipe_reference_init(&ps->reference, 1);

   pipe_resource_reference(&ps->texture, pt);

   ps->context = pipe;

   ps->format = tmpl->format;

   ps->u.tex.level = tmpl->u.tex.level;

   ps->u.tex.first_layer = tmpl->u.tex.first_layer;

   ps->u.tex.last_layer = tmpl->u.tex.last_layer;

   ns->width = u_minify(pt->width0, ps->u.tex.level);

   ns->height = u_minify(pt->height0, ps->u.tex.level);

   ns->depth = ps->u.tex.last_layer - ps->u.tex.first_layer + 1;

   ns->offset = layer_offset(pt, ps->u.tex.level, ps->u.tex.first_layer);

   if (mt->swizzled)

      ns->pitch = 4096; /* random, just something the hw won't reject.. */

   else

      ns->pitch = lvl->pitch;

   /* comment says there are going to be removed, but they're used by the st */

   ps->width = ns->width;

   ps->height = ns->height;

   return ps;

}

void

nv30_miptree_surface_del(struct pipe_context *pipe, struct pipe_surface *ps)

{

   struct nv30_surface *ns = nv30_surface(ps);

   pipe_resource_reference(&ps->texture, NULL);

   FREE(ns);

}