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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_dynarray.h"

#include "tgsi/tgsi_parse.h"

#include "nouveau/nv_object.xml.h"

#include "nv30-40_3d.xml.h"

#include "nv30_context.h"

#include "nv30_state.h"

static void

nv30_vertprog_destroy(struct nv30_vertprog *vp)

{

   util_dynarray_fini(&vp->branch_relocs);

   nouveau_heap_free(&vp->exec);

   FREE(vp->insns);

   vp->insns = NULL;

   vp->nr_insns = 0;

   util_dynarray_fini(&vp->const_relocs);

   nouveau_heap_free(&vp->data);

   FREE(vp->consts);

   vp->consts = NULL;

   vp->nr_consts = 0;

   vp->translated = FALSE;

}

void

nv30_vertprog_validate(struct nv30_context *nv30)

{

   struct nouveau_pushbuf *push = nv30->base.pushbuf;

   struct nouveau_object *eng3d = nv30->screen->eng3d;

   struct nv30_vertprog *vp = nv30->vertprog.program;

   struct nv30_fragprog *fp = nv30->fragprog.program;

   boolean upload_code = FALSE;

   boolean upload_data = FALSE;

   unsigned i;

   if (nv30->dirty & NV30_NEW_FRAGPROG) {

      if (memcmp(vp->texcoord, fp->texcoord, sizeof(vp->texcoord))) {

         if (vp->translated)

            nv30_vertprog_destroy(vp);

         memcpy(vp->texcoord, fp->texcoord, sizeof(vp->texcoord));

      }

   }

   if (nv30->rast && nv30->rast->pipe.clip_plane_enable != vp->enabled_ucps) {

      vp->enabled_ucps = nv30->rast->pipe.clip_plane_enable;

      if (vp->translated)

         nv30_vertprog_destroy(vp);

   }

   if (!vp->translated) {

      vp->translated = _nvfx_vertprog_translate(nv30, vp);

      if (!vp->translated) {

         nv30->draw_flags |= NV30_NEW_VERTPROG;

         return;

      }

      nv30->dirty |= NV30_NEW_VERTPROG;

   }

   if (!vp->exec) {

      struct nouveau_heap *heap = nv30->screen->vp_exec_heap;

      struct nv30_shader_reloc *reloc = vp->branch_relocs.data;

      unsigned nr_reloc = vp->branch_relocs.size / sizeof(*reloc);

      uint32_t *inst, target;

      if (nouveau_heap_alloc(heap, vp->nr_insns, &vp->exec, &vp->exec)) {

         while (heap->next && heap->size < vp->nr_insns) {

            struct nouveau_heap **evict = heap->next->priv;

            nouveau_heap_free(evict);

         }

         if (nouveau_heap_alloc(heap, vp->nr_insns, &vp->exec, &vp->exec)) {

            nv30->draw_flags |= NV30_NEW_VERTPROG;

            return;

         }

      }

      if (eng3d->oclass < NV40_3D_CLASS) {

         while (nr_reloc--) {

            inst     = vp->insns[reloc->location].data;

            target   = vp->exec->start + reloc->target;

            inst[2] &= ~0x000007fc;

            inst[2] |= target << 2;

            reloc++;

         }

      } else {

         while (nr_reloc--) {

            inst     = vp->insns[reloc->location].data;

            target   = vp->exec->start + reloc->target;

            inst[2] &= ~0x0000003f;

            inst[2] |= target >> 3;

            inst[3] &= ~0xe0000000;

            inst[3] |= target << 29;

            reloc++;

         }

      }

      upload_code = TRUE;

   }

   if (vp->nr_consts && !vp->data) {

      struct nouveau_heap *heap = nv30->screen->vp_data_heap;

      struct nv30_shader_reloc *reloc = vp->const_relocs.data;

      unsigned nr_reloc = vp->const_relocs.size / sizeof(*reloc);

      uint32_t *inst, target;

      if (nouveau_heap_alloc(heap, vp->nr_consts, vp, &vp->data)) {

         while (heap->next && heap->size < vp->nr_consts) {

            struct nv30_vertprog *evp = heap->next->priv;

            nouveau_heap_free(&evp->data);

         }

         if (nouveau_heap_alloc(heap, vp->nr_consts, vp, &vp->data)) {

            nv30->draw_flags |= NV30_NEW_VERTPROG;

            return;

         }

      }

      if (eng3d->oclass < NV40_3D_CLASS) {

         while (nr_reloc--) {

            inst     = vp->insns[reloc->location].data;

            target   = vp->data->start + reloc->target;

            inst[1] &= ~0x0007fc000;

            inst[1] |= (target & 0x1ff) << 14;

            reloc++;

         }

      } else {

         while (nr_reloc--) {

            inst     = vp->insns[reloc->location].data;

            target   = vp->data->start + reloc->target;

            inst[1] &= ~0x0001ff000;

            inst[1] |= (target & 0x1ff) << 12;

            reloc++;

         }

      }

      upload_code = TRUE;

      upload_data = TRUE;

   }

   if (vp->nr_consts) {

      struct nv04_resource *res = nv04_resource(nv30->vertprog.constbuf);

      for (i = 0; i < vp->nr_consts; i++) {

         struct nv30_vertprog_data *data = &vp->consts[i];

         if (data->index < 0) {

            if (!upload_data)

               continue;

         } else {

            float *constbuf = (float *)res->data;

            if (!upload_data &&

                !memcmp(data->value, &constbuf[data->index * 4], 16))

               continue;

            memcpy(data->value, &constbuf[data->index * 4], 16);

         }

         BEGIN_NV04(push, NV30_3D(VP_UPLOAD_CONST_ID), 5);

         PUSH_DATA (push, vp->data->start + i);

         PUSH_DATAp(push, data->value, 4);

      }

   }

   if (upload_code) {

      BEGIN_NV04(push, NV30_3D(VP_UPLOAD_FROM_ID), 1);

      PUSH_DATA (push, vp->exec->start);

      for (i = 0; i < vp->nr_insns; i++) {

         BEGIN_NV04(push, NV30_3D(VP_UPLOAD_INST(0)), 4);

         PUSH_DATAp(push, vp->insns[i].data, 4);

      }

   }

   if (nv30->dirty & (NV30_NEW_VERTPROG | NV30_NEW_FRAGPROG)) {

      BEGIN_NV04(push, NV30_3D(VP_START_FROM_ID), 1);

      PUSH_DATA (push, vp->exec->start);

      if (eng3d->oclass < NV40_3D_CLASS) {

         BEGIN_NV04(push, NV30_3D(ENGINE), 1);

         PUSH_DATA (push, 0x00000013); /* vp instead of ff, somehow */

      } else {

         BEGIN_NV04(push, NV40_3D(VP_ATTRIB_EN), 2);

         PUSH_DATA (push, vp->ir);

         PUSH_DATA (push, vp->or | fp->vp_or);

         BEGIN_NV04(push, NV30_3D(ENGINE), 1);

         PUSH_DATA (push, 0x00000011);

      }

   }

}

static void *

nv30_vp_state_create(struct pipe_context *pipe,

                     const struct pipe_shader_state *cso)

{

   struct nv30_vertprog *vp = CALLOC_STRUCT(nv30_vertprog);

   if (!vp)

      return NULL;

   vp->pipe.tokens = tgsi_dup_tokens(cso->tokens);

   tgsi_scan_shader(vp->pipe.tokens, &vp->info);

   return vp;

}

static void

nv30_vp_state_delete(struct pipe_context *pipe, void *hwcso)

{

   struct nv30_vertprog *vp = hwcso;

   if (vp->translated)

      nv30_vertprog_destroy(vp);

   FREE((void *)vp->pipe.tokens);

   FREE(vp);

}

static void

nv30_vp_state_bind(struct pipe_context *pipe, void *hwcso)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   nv30->vertprog.program = hwcso;

   nv30->dirty |= NV30_NEW_VERTPROG;

}

void

nv30_vertprog_init(struct pipe_context *pipe)

{

   pipe->create_vs_state = nv30_vp_state_create;

   pipe->bind_vs_state = nv30_vp_state_bind;

   pipe->delete_vs_state = nv30_vp_state_delete;

}