/*
 * Copyright 2010 Christoph Bumiller
 *
 * 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.
 */

#include "pipe/p_defines.h"
#include "util/u_framebuffer.h"
#include "util/u_helpers.h"
#include "util/u_inlines.h"
#include "util/u_transfer.h"
#include "util/format_srgb.h"

#include "tgsi/tgsi_parse.h"
#include "compiler/nir/nir.h"

#include "nv50/nv50_stateobj.h"
#include "nv50/nv50_context.h"
#include "nv50/nv50_query_hw.h"

#include "nv50/nv50_3d.xml.h"
#include "nv50/g80_texture.xml.h"

#include "nouveau_gldefs.h"

/* Caveats:
 *  ! pipe_sampler_state.unnormalized_coords is ignored - rectangle textures
 *     will use non-normalized coordinates, everything else won't
 *    (The relevant bit is in the TIC entry and not the TSC entry.)
 *
 *  ! pipe_sampler_state.seamless_cube_map is ignored - seamless filtering is
 *     always activated on NVA0 +
 *    (Give me the global bit, otherwise it's not worth the CPU work.)
 *
 *  ! pipe_sampler_state.border_color is not swizzled according to the texture
 *     swizzle in pipe_sampler_view
 *    (This will be ugly with indirect independent texture/sampler access,
 *     we'd have to emulate the logic in the shader. GL doesn't have that,
 *     D3D doesn't have swizzle, if we knew what we were implementing we'd be
 *     good.)
 *
 *  ! pipe_rasterizer_state.line_last_pixel is ignored - it is never drawn
 *
 *  ! pipe_rasterizer_state.flatshade_first also applies to QUADS
 *    (There's a GL query for that, forcing an exception is just ridiculous.)
 *
 *  ! pipe_rasterizer_state.sprite_coord_enable is masked with 0xff on NVC0
 *    (The hardware only has 8 slots meant for TexCoord and we have to assign
 *     in advance to maintain elegant separate shader objects.)
 */

static inline uint32_t
nv50_colormask(unsigned mask)
{
   uint32_t ret = 0;

   if (mask & PIPE_MASK_R)
      ret |= 0x0001;
   if (mask & PIPE_MASK_G)
      ret |= 0x0010;
   if (mask & PIPE_MASK_B)
      ret |= 0x0100;
   if (mask & PIPE_MASK_A)
      ret |= 0x1000;

   return ret;
}

#define NV50_BLEND_FACTOR_CASE(a, b) \
   case PIPE_BLENDFACTOR_##a: return NV50_BLEND_FACTOR_##b

static inline uint32_t
nv50_blend_fac(unsigned factor)
{
   switch (factor) {
   NV50_BLEND_FACTOR_CASE(ONE, ONE);
   NV50_BLEND_FACTOR_CASE(SRC_COLOR, SRC_COLOR);
   NV50_BLEND_FACTOR_CASE(SRC_ALPHA, SRC_ALPHA);
   NV50_BLEND_FACTOR_CASE(DST_ALPHA, DST_ALPHA);
   NV50_BLEND_FACTOR_CASE(DST_COLOR, DST_COLOR);
   NV50_BLEND_FACTOR_CASE(SRC_ALPHA_SATURATE, SRC_ALPHA_SATURATE);
   NV50_BLEND_FACTOR_CASE(CONST_COLOR, CONSTANT_COLOR);
   NV50_BLEND_FACTOR_CASE(CONST_ALPHA, CONSTANT_ALPHA);
   NV50_BLEND_FACTOR_CASE(SRC1_COLOR, SRC1_COLOR);
   NV50_BLEND_FACTOR_CASE(SRC1_ALPHA, SRC1_ALPHA);
   NV50_BLEND_FACTOR_CASE(ZERO, ZERO);
   NV50_BLEND_FACTOR_CASE(INV_SRC_COLOR, ONE_MINUS_SRC_COLOR);
   NV50_BLEND_FACTOR_CASE(INV_SRC_ALPHA, ONE_MINUS_SRC_ALPHA);
   NV50_BLEND_FACTOR_CASE(INV_DST_ALPHA, ONE_MINUS_DST_ALPHA);
   NV50_BLEND_FACTOR_CASE(INV_DST_COLOR, ONE_MINUS_DST_COLOR);
   NV50_BLEND_FACTOR_CASE(INV_CONST_COLOR, ONE_MINUS_CONSTANT_COLOR);
   NV50_BLEND_FACTOR_CASE(INV_CONST_ALPHA, ONE_MINUS_CONSTANT_ALPHA);
   NV50_BLEND_FACTOR_CASE(INV_SRC1_COLOR, ONE_MINUS_SRC1_COLOR);
   NV50_BLEND_FACTOR_CASE(INV_SRC1_ALPHA, ONE_MINUS_SRC1_ALPHA);
   default:
      return NV50_BLEND_FACTOR_ZERO;
   }
}

static void *
nv50_blend_state_create(struct pipe_context *pipe,
                        const struct pipe_blend_state *cso)
{
   struct nv50_blend_stateobj *so = CALLOC_STRUCT(nv50_blend_stateobj);
   int i;
   bool emit_common_func = cso->rt[0].blend_enable;
   uint32_t ms;

   if (nv50_context(pipe)->screen->tesla->oclass >= NVA3_3D_CLASS) {
      SB_BEGIN_3D(so, BLEND_INDEPENDENT, 1);
      SB_DATA    (so, cso->independent_blend_enable);
   }

   so->pipe = *cso;

   SB_BEGIN_3D(so, COLOR_MASK_COMMON, 1);
   SB_DATA    (so, !cso->independent_blend_enable);

   SB_BEGIN_3D(so, BLEND_ENABLE_COMMON, 1);
   SB_DATA    (so, !cso->independent_blend_enable);

   if (cso->independent_blend_enable) {
      SB_BEGIN_3D(so, BLEND_ENABLE(0), 8);
      for (i = 0; i < 8; ++i) {
         SB_DATA(so, cso->rt[i].blend_enable);
         if (cso->rt[i].blend_enable)
            emit_common_func = true;
      }

      if (nv50_context(pipe)->screen->tesla->oclass >= NVA3_3D_CLASS) {
         emit_common_func = false;

         for (i = 0; i < 8; ++i) {
            if (!cso->rt[i].blend_enable)
               continue;
            SB_BEGIN_3D_(so, NVA3_3D_IBLEND_EQUATION_RGB(i), 6);
            SB_DATA     (so, nvgl_blend_eqn(cso->rt[i].rgb_func));
            SB_DATA     (so, nv50_blend_fac(cso->rt[i].rgb_src_factor));
            SB_DATA     (so, nv50_blend_fac(cso->rt[i].rgb_dst_factor));
            SB_DATA     (so, nvgl_blend_eqn(cso->rt[i].alpha_func));
            SB_DATA     (so, nv50_blend_fac(cso->rt[i].alpha_src_factor));
            SB_DATA     (so, nv50_blend_fac(cso->rt[i].alpha_dst_factor));
         }
      }
   } else {
      SB_BEGIN_3D(so, BLEND_ENABLE(0), 1);
      SB_DATA    (so, cso->rt[0].blend_enable);
   }

   if (emit_common_func) {
      SB_BEGIN_3D(so, BLEND_EQUATION_RGB, 5);
      SB_DATA    (so, nvgl_blend_eqn(cso->rt[0].rgb_func));
      SB_DATA    (so, nv50_blend_fac(cso->rt[0].rgb_src_factor));
      SB_DATA    (so, nv50_blend_fac(cso->rt[0].rgb_dst_factor));
      SB_DATA    (so, nvgl_blend_eqn(cso->rt[0].alpha_func));
      SB_DATA    (so, nv50_blend_fac(cso->rt[0].alpha_src_factor));
      SB_BEGIN_3D(so, BLEND_FUNC_DST_ALPHA, 1);
      SB_DATA    (so, nv50_blend_fac(cso->rt[0].alpha_dst_factor));
   }

   if (cso->logicop_enable) {
      SB_BEGIN_3D(so, LOGIC_OP_ENABLE, 2);
      SB_DATA    (so, 1);
      SB_DATA    (so, nvgl_logicop_func(cso->logicop_func));
   } else {
      SB_BEGIN_3D(so, LOGIC_OP_ENABLE, 1);
      SB_DATA    (so, 0);
   }

   if (cso->independent_blend_enable) {
      SB_BEGIN_3D(so, COLOR_MASK(0), 8);
      for (i = 0; i < 8; ++i)
         SB_DATA(so, nv50_colormask(cso->rt[i].colormask));
   } else {
      SB_BEGIN_3D(so, COLOR_MASK(0), 1);
      SB_DATA    (so, nv50_colormask(cso->rt[0].colormask));
   }

   ms = 0;
   if (cso->alpha_to_coverage)
      ms |= NV50_3D_MULTISAMPLE_CTRL_ALPHA_TO_COVERAGE;
   if (cso->alpha_to_one)
      ms |= NV50_3D_MULTISAMPLE_CTRL_ALPHA_TO_ONE;

   SB_BEGIN_3D(so, MULTISAMPLE_CTRL, 1);
   SB_DATA    (so, ms);

   assert(so->size <= ARRAY_SIZE(so->state));
   return so;
}

static void
nv50_blend_state_bind(struct pipe_context *pipe, void *hwcso)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->blend = hwcso;
   nv50->dirty_3d |= NV50_NEW_3D_BLEND;
}

static void
nv50_blend_state_delete(struct pipe_context *pipe, void *hwcso)
{
   FREE(hwcso);
}

/* NOTE: ignoring line_last_pixel */
static void *
nv50_rasterizer_state_create(struct pipe_context *pipe,
                             const struct pipe_rasterizer_state *cso)
{
   struct nv50_rasterizer_stateobj *so;
   uint32_t reg;

   so = CALLOC_STRUCT(nv50_rasterizer_stateobj);
   if (!so)
      return NULL;
   so->pipe = *cso;

#ifndef NV50_SCISSORS_CLIPPING
   for (int i = 0; i < NV50_MAX_VIEWPORTS; i++) {
      SB_BEGIN_3D(so, SCISSOR_ENABLE(i), 1);
      SB_DATA    (so, cso->scissor);
   }
#endif

   SB_BEGIN_3D(so, SHADE_MODEL, 1);
   SB_DATA    (so, cso->flatshade ? NV50_3D_SHADE_MODEL_FLAT :
                                    NV50_3D_SHADE_MODEL_SMOOTH);
   SB_BEGIN_3D(so, PROVOKING_VERTEX_LAST, 1);
   SB_DATA    (so, !cso->flatshade_first);
   SB_BEGIN_3D(so, VERTEX_TWO_SIDE_ENABLE, 1);
   SB_DATA    (so, cso->light_twoside);

   SB_BEGIN_3D(so, FRAG_COLOR_CLAMP_EN, 1);
   SB_DATA    (so, cso->clamp_fragment_color ? 0x11111111 : 0x00000000);

   SB_BEGIN_3D(so, MULTISAMPLE_ENABLE, 1);
   SB_DATA    (so, cso->multisample);

   SB_BEGIN_3D(so, LINE_WIDTH, 1);
   SB_DATA    (so, fui(cso->line_width));
   SB_BEGIN_3D(so, LINE_SMOOTH_ENABLE, 1);
   SB_DATA    (so, cso->line_smooth);

   SB_BEGIN_3D(so, LINE_STIPPLE_ENABLE, 1);
   if (cso->line_stipple_enable) {
      SB_DATA    (so, 1);
      SB_BEGIN_3D(so, LINE_STIPPLE, 1);
      SB_DATA    (so, (cso->line_stipple_pattern << 8) |
                  cso->line_stipple_factor);
   } else {
      SB_DATA    (so, 0);
   }

   if (!cso->point_size_per_vertex) {
      SB_BEGIN_3D(so, POINT_SIZE, 1);
      SB_DATA    (so, fui(cso->point_size));
   }
   SB_BEGIN_3D(so, POINT_SPRITE_ENABLE, 1);
   SB_DATA    (so, cso->point_quad_rasterization);
   SB_BEGIN_3D(so, POINT_SMOOTH_ENABLE, 1);
   SB_DATA    (so, cso->point_smooth);

   SB_BEGIN_3D(so, POLYGON_MODE_FRONT, 3);
   SB_DATA    (so, nvgl_polygon_mode(cso->fill_front));
   SB_DATA    (so, nvgl_polygon_mode(cso->fill_back));
   SB_DATA    (so, cso->poly_smooth);

   SB_BEGIN_3D(so, CULL_FACE_ENABLE, 3);
   SB_DATA    (so, cso->cull_face != PIPE_FACE_NONE);
   SB_DATA    (so, cso->front_ccw ? NV50_3D_FRONT_FACE_CCW :
                                    NV50_3D_FRONT_FACE_CW);
   switch (cso->cull_face) {
   case PIPE_FACE_FRONT_AND_BACK:
      SB_DATA(so, NV50_3D_CULL_FACE_FRONT_AND_BACK);
      break;
   case PIPE_FACE_FRONT:
      SB_DATA(so, NV50_3D_CULL_FACE_FRONT);
      break;
   case PIPE_FACE_BACK:
   default:
     SB_DATA(so, NV50_3D_CULL_FACE_BACK);
     break;
   }

   SB_BEGIN_3D(so, POLYGON_STIPPLE_ENABLE, 1);
   SB_DATA    (so, cso->poly_stipple_enable);
   SB_BEGIN_3D(so, POLYGON_OFFSET_POINT_ENABLE, 3);
   SB_DATA    (so, cso->offset_point);
   SB_DATA    (so, cso->offset_line);
   SB_DATA    (so, cso->offset_tri);

   if (cso->offset_point || cso->offset_line || cso->offset_tri) {
      SB_BEGIN_3D(so, POLYGON_OFFSET_FACTOR, 1);
      SB_DATA    (so, fui(cso->offset_scale));
      SB_BEGIN_3D(so, POLYGON_OFFSET_UNITS, 1);
      SB_DATA    (so, fui(cso->offset_units * 2.0f));
      SB_BEGIN_3D(so, POLYGON_OFFSET_CLAMP, 1);
      SB_DATA    (so, fui(cso->offset_clamp));
   }

   if (cso->depth_clip_near) {
      reg = 0;
   } else {
      reg =
         NV50_3D_VIEW_VOLUME_CLIP_CTRL_DEPTH_CLAMP_NEAR |
         NV50_3D_VIEW_VOLUME_CLIP_CTRL_DEPTH_CLAMP_FAR |
         NV50_3D_VIEW_VOLUME_CLIP_CTRL_UNK12_UNK1;
   }
#ifndef NV50_SCISSORS_CLIPPING
   reg |=
      NV50_3D_VIEW_VOLUME_CLIP_CTRL_UNK7 |
      NV50_3D_VIEW_VOLUME_CLIP_CTRL_UNK12_UNK1;
#endif
   SB_BEGIN_3D(so, VIEW_VOLUME_CLIP_CTRL, 1);
   SB_DATA    (so, reg);

   SB_BEGIN_3D(so, DEPTH_CLIP_NEGATIVE_Z, 1);
   SB_DATA    (so, cso->clip_halfz);

   SB_BEGIN_3D(so, PIXEL_CENTER_INTEGER, 1);
   SB_DATA    (so, !cso->half_pixel_center);

   assert(so->size <= ARRAY_SIZE(so->state));
   return (void *)so;
}

static void
nv50_rasterizer_state_bind(struct pipe_context *pipe, void *hwcso)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->rast = hwcso;
   nv50->dirty_3d |= NV50_NEW_3D_RASTERIZER;
}

static void
nv50_rasterizer_state_delete(struct pipe_context *pipe, void *hwcso)
{
   FREE(hwcso);
}

static void *
nv50_zsa_state_create(struct pipe_context *pipe,
                      const struct pipe_depth_stencil_alpha_state *cso)
{
   struct nv50_zsa_stateobj *so = CALLOC_STRUCT(nv50_zsa_stateobj);

   so->pipe = *cso;

   SB_BEGIN_3D(so, DEPTH_WRITE_ENABLE, 1);
   SB_DATA    (so, cso->depth_writemask);
   SB_BEGIN_3D(so, DEPTH_TEST_ENABLE, 1);
   if (cso->depth_enabled) {
      SB_DATA    (so, 1);
      SB_BEGIN_3D(so, DEPTH_TEST_FUNC, 1);
      SB_DATA    (so, nvgl_comparison_op(cso->depth_func));
   } else {
      SB_DATA    (so, 0);
   }

   SB_BEGIN_3D(so, DEPTH_BOUNDS_EN, 1);
   if (cso->depth_bounds_test) {
      SB_DATA    (so, 1);
      SB_BEGIN_3D(so, DEPTH_BOUNDS(0), 2);
      SB_DATA    (so, fui(cso->depth_bounds_min));
      SB_DATA    (so, fui(cso->depth_bounds_max));
   } else {
      SB_DATA    (so, 0);
   }

   if (cso->stencil[0].enabled) {
      SB_BEGIN_3D(so, STENCIL_ENABLE, 5);
      SB_DATA    (so, 1);
      SB_DATA    (so, nvgl_stencil_op(cso->stencil[0].fail_op));
      SB_DATA    (so, nvgl_stencil_op(cso->stencil[0].zfail_op));
      SB_DATA    (so, nvgl_stencil_op(cso->stencil[0].zpass_op));
      SB_DATA    (so, nvgl_comparison_op(cso->stencil[0].func));
      SB_BEGIN_3D(so, STENCIL_FRONT_MASK, 2);
      SB_DATA    (so, cso->stencil[0].writemask);
      SB_DATA    (so, cso->stencil[0].valuemask);
   } else {
      SB_BEGIN_3D(so, STENCIL_ENABLE, 1);
      SB_DATA    (so, 0);
   }

   if (cso->stencil[1].enabled) {
      assert(cso->stencil[0].enabled);
      SB_BEGIN_3D(so, STENCIL_TWO_SIDE_ENABLE, 5);
      SB_DATA    (so, 1);
      SB_DATA    (so, nvgl_stencil_op(cso->stencil[1].fail_op));
      SB_DATA    (so, nvgl_stencil_op(cso->stencil[1].zfail_op));
      SB_DATA    (so, nvgl_stencil_op(cso->stencil[1].zpass_op));
      SB_DATA    (so, nvgl_comparison_op(cso->stencil[1].func));
      SB_BEGIN_3D(so, STENCIL_BACK_MASK, 2);
      SB_DATA    (so, cso->stencil[1].writemask);
      SB_DATA    (so, cso->stencil[1].valuemask);
   } else {
      SB_BEGIN_3D(so, STENCIL_TWO_SIDE_ENABLE, 1);
      SB_DATA    (so, 0);
   }

   SB_BEGIN_3D(so, ALPHA_TEST_ENABLE, 1);
   if (cso->alpha_enabled) {
      SB_DATA    (so, 1);
      SB_BEGIN_3D(so, ALPHA_TEST_REF, 2);
      SB_DATA    (so, fui(cso->alpha_ref_value));
      SB_DATA    (so, nvgl_comparison_op(cso->alpha_func));
   } else {
      SB_DATA    (so, 0);
   }

   SB_BEGIN_3D(so, CB_ADDR, 1);
   SB_DATA    (so, NV50_CB_AUX_ALPHATEST_OFFSET << (8 - 2) | NV50_CB_AUX);
   SB_BEGIN_3D(so, CB_DATA(0), 1);
   SB_DATA    (so, fui(cso->alpha_ref_value));

   assert(so->size <= ARRAY_SIZE(so->state));
   return (void *)so;
}

static void
nv50_zsa_state_bind(struct pipe_context *pipe, void *hwcso)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->zsa = hwcso;
   nv50->dirty_3d |= NV50_NEW_3D_ZSA;
}

static void
nv50_zsa_state_delete(struct pipe_context *pipe, void *hwcso)
{
   FREE(hwcso);
}

/* ====================== SAMPLERS AND TEXTURES ================================
 */

static inline unsigned
nv50_tsc_wrap_mode(unsigned wrap)
{
   switch (wrap) {
   case PIPE_TEX_WRAP_REPEAT:
      return G80_TSC_WRAP_WRAP;
   case PIPE_TEX_WRAP_MIRROR_REPEAT:
      return G80_TSC_WRAP_MIRROR;
   case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
      return G80_TSC_WRAP_CLAMP_TO_EDGE;
   case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
      return G80_TSC_WRAP_BORDER;
   case PIPE_TEX_WRAP_CLAMP:
      return G80_TSC_WRAP_CLAMP_OGL;
   case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
      return G80_TSC_WRAP_MIRROR_ONCE_CLAMP_TO_EDGE;
   case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
      return G80_TSC_WRAP_MIRROR_ONCE_BORDER;
   case PIPE_TEX_WRAP_MIRROR_CLAMP:
      return G80_TSC_WRAP_MIRROR_ONCE_CLAMP_OGL;
   default:
       NOUVEAU_ERR("unknown wrap mode: %d\n", wrap);
       return G80_TSC_WRAP_WRAP;
   }
}

void *
nv50_sampler_state_create(struct pipe_context *pipe,
                          const struct pipe_sampler_state *cso)
{
   struct nv50_tsc_entry *so = MALLOC_STRUCT(nv50_tsc_entry);
   float f[2];

   so->id = -1;

   so->tsc[0] = (0x00026000 |
                 (nv50_tsc_wrap_mode(cso->wrap_s) << 0) |
                 (nv50_tsc_wrap_mode(cso->wrap_t) << 3) |
                 (nv50_tsc_wrap_mode(cso->wrap_r) << 6));

   switch (cso->mag_img_filter) {
   case PIPE_TEX_FILTER_LINEAR:
      so->tsc[1] = G80_TSC_1_MAG_FILTER_LINEAR;
      break;
   case PIPE_TEX_FILTER_NEAREST:
   default:
      so->tsc[1] = G80_TSC_1_MAG_FILTER_NEAREST;
      break;
   }

   switch (cso->min_img_filter) {
   case PIPE_TEX_FILTER_LINEAR:
      so->tsc[1] |= G80_TSC_1_MIN_FILTER_LINEAR;
      break;
   case PIPE_TEX_FILTER_NEAREST:
   default:
      so->tsc[1] |= G80_TSC_1_MIN_FILTER_NEAREST;
      break;
   }

   switch (cso->min_mip_filter) {
   case PIPE_TEX_MIPFILTER_LINEAR:
      so->tsc[1] |= G80_TSC_1_MIP_FILTER_LINEAR;
      break;
   case PIPE_TEX_MIPFILTER_NEAREST:
      so->tsc[1] |= G80_TSC_1_MIP_FILTER_NEAREST;
      break;
   case PIPE_TEX_MIPFILTER_NONE:
   default:
      so->tsc[1] |= G80_TSC_1_MIP_FILTER_NONE;
      break;
   }

   if (nouveau_screen(pipe->screen)->class_3d >= NVE4_3D_CLASS) {
      if (cso->seamless_cube_map)
         so->tsc[1] |= GK104_TSC_1_CUBEMAP_INTERFACE_FILTERING;
      if (cso->unnormalized_coords)
         so->tsc[1] |= GK104_TSC_1_FLOAT_COORD_NORMALIZATION_FORCE_UNNORMALIZED_COORDS;
   } else {
      so->seamless_cube_map = cso->seamless_cube_map;
   }

   if (nouveau_screen(pipe->screen)->class_3d >= GM200_3D_CLASS) {
      if (cso->reduction_mode == PIPE_TEX_REDUCTION_MIN)
         so->tsc[1] |= GM204_TSC_1_REDUCTION_MODE_MIN;
      if (cso->reduction_mode == PIPE_TEX_REDUCTION_MAX)
         so->tsc[1] |= GM204_TSC_1_REDUCTION_MODE_MAX;
   }

   if (cso->max_anisotropy >= 16)
      so->tsc[0] |= (7 << 20);
   else
   if (cso->max_anisotropy >= 12)
      so->tsc[0] |= (6 << 20);
   else {
      so->tsc[0] |= (cso->max_anisotropy >> 1) << 20;

      if (cso->max_anisotropy >= 4)
         so->tsc[1] |= 6 << G80_TSC_1_TRILIN_OPT__SHIFT;
      else
      if (cso->max_anisotropy >= 2)
         so->tsc[1] |= 4 << G80_TSC_1_TRILIN_OPT__SHIFT;
   }

   if (cso->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
      /* NOTE: must be deactivated for non-shadow textures */
      so->tsc[0] |= (1 << 9);
      so->tsc[0] |= (nvgl_comparison_op(cso->compare_func) & 0x7) << 10;
   }

   f[0] = CLAMP(cso->lod_bias, -16.0f, 15.0f);
   so->tsc[1] |= ((int)(f[0] * 256.0f) & 0x1fff) << 12;

   f[0] = CLAMP(cso->min_lod, 0.0f, 15.0f);
   f[1] = CLAMP(cso->max_lod, 0.0f, 15.0f);
   so->tsc[2] =
      (((int)(f[1] * 256.0f) & 0xfff) << 12) | ((int)(f[0] * 256.0f) & 0xfff);

   so->tsc[2] |=
      util_format_linear_float_to_srgb_8unorm(cso->border_color.f[0]) << 24;
   so->tsc[3] =
      util_format_linear_float_to_srgb_8unorm(cso->border_color.f[1]) << 12;
   so->tsc[3] |=
      util_format_linear_float_to_srgb_8unorm(cso->border_color.f[2]) << 20;

   so->tsc[4] = fui(cso->border_color.f[0]);
   so->tsc[5] = fui(cso->border_color.f[1]);
   so->tsc[6] = fui(cso->border_color.f[2]);
   so->tsc[7] = fui(cso->border_color.f[3]);

   return (void *)so;
}

static void
nv50_sampler_state_delete(struct pipe_context *pipe, void *hwcso)
{
   unsigned s, i;

   for (s = 0; s < NV50_MAX_SHADER_STAGES; ++s) {
      assert(nv50_context(pipe)->num_samplers[s] <= PIPE_MAX_SAMPLERS);
      for (i = 0; i < nv50_context(pipe)->num_samplers[s]; ++i)
         if (nv50_context(pipe)->samplers[s][i] == hwcso)
            nv50_context(pipe)->samplers[s][i] = NULL;
   }

   nv50_screen_tsc_free(nv50_context(pipe)->screen, nv50_tsc_entry(hwcso));

   FREE(hwcso);
}

static inline void
nv50_stage_sampler_states_bind(struct nv50_context *nv50, int s,
                               unsigned nr, void **hwcsos)
{
   unsigned highest_found = 0;
   unsigned i;

   assert(nr <= PIPE_MAX_SAMPLERS);
   for (i = 0; i < nr; ++i) {
      struct nv50_tsc_entry *hwcso = hwcsos ? nv50_tsc_entry(hwcsos[i]) : NULL;
      struct nv50_tsc_entry *old = nv50->samplers[s][i];

      if (hwcso)
         highest_found = i;

      nv50->samplers[s][i] = hwcso;
      if (old)
         nv50_screen_tsc_unlock(nv50->screen, old);
   }
   assert(nv50->num_samplers[s] <= PIPE_MAX_SAMPLERS);
   if (nr >= nv50->num_samplers[s])
      nv50->num_samplers[s] = highest_found + 1;
}

static void
nv50_bind_sampler_states(struct pipe_context *pipe,
                         enum pipe_shader_type shader, unsigned start,
                         unsigned num_samplers, void **samplers)
{
   unsigned s = nv50_context_shader_stage(shader);

   assert(start == 0);
   nv50_stage_sampler_states_bind(nv50_context(pipe), s, num_samplers,
                                  samplers);

   if (unlikely(s == NV50_SHADER_STAGE_COMPUTE))
      nv50_context(pipe)->dirty_cp |= NV50_NEW_CP_SAMPLERS;
   else
      nv50_context(pipe)->dirty_3d |= NV50_NEW_3D_SAMPLERS;
}



/* NOTE: only called when not referenced anywhere, won't be bound */
static void
nv50_sampler_view_destroy(struct pipe_context *pipe,
                          struct pipe_sampler_view *view)
{
   pipe_resource_reference(&view->texture, NULL);

   nv50_screen_tic_free(nv50_context(pipe)->screen, nv50_tic_entry(view));

   FREE(nv50_tic_entry(view));
}

static inline void
nv50_stage_set_sampler_views(struct nv50_context *nv50, int s,
                             unsigned nr, bool take_ownership,
                             struct pipe_sampler_view **views)
{
   unsigned i;

   assert(nr <= PIPE_MAX_SAMPLERS);
   for (i = 0; i < nr; ++i) {
      struct pipe_sampler_view *view = views ? views[i] : NULL;
      struct nv50_tic_entry *old = nv50_tic_entry(nv50->textures[s][i]);
      if (old)
         nv50_screen_tic_unlock(nv50->screen, old);

      if (view && view->texture) {
         struct pipe_resource *res = view->texture;
         if (res->target == PIPE_BUFFER &&
             (res->flags & PIPE_RESOURCE_FLAG_MAP_COHERENT))
            nv50->textures_coherent[s] |= 1 << i;
         else
            nv50->textures_coherent[s] &= ~(1 << i);
      } else {
         nv50->textures_coherent[s] &= ~(1 << i);
      }

      if (take_ownership) {
         pipe_sampler_view_reference(&nv50->textures[s][i], NULL);
         nv50->textures[s][i] = view;
      } else {
         pipe_sampler_view_reference(&nv50->textures[s][i], view);
      }
   }

   assert(nv50->num_textures[s] <= PIPE_MAX_SAMPLERS);
   for (i = nr; i < nv50->num_textures[s]; ++i) {
      struct nv50_tic_entry *old = nv50_tic_entry(nv50->textures[s][i]);
      if (!old)
         continue;
      nv50_screen_tic_unlock(nv50->screen, old);

      pipe_sampler_view_reference(&nv50->textures[s][i], NULL);
   }

   nv50->num_textures[s] = nr;
}

static void
nv50_set_sampler_views(struct pipe_context *pipe, enum pipe_shader_type shader,
                       unsigned start, unsigned nr,
                       unsigned unbind_num_trailing_slots,
                       bool take_ownership,
                       struct pipe_sampler_view **views)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   unsigned s = nv50_context_shader_stage(shader);

   assert(start == 0);
   nv50_stage_set_sampler_views(nv50, s, nr, take_ownership, views);

   if (unlikely(s == NV50_SHADER_STAGE_COMPUTE)) {
      nouveau_bufctx_reset(nv50->bufctx_cp, NV50_BIND_CP_TEXTURES);

      nv50->dirty_cp |= NV50_NEW_CP_TEXTURES;
   } else {
      nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_3D_TEXTURES);

      nv50->dirty_3d |= NV50_NEW_3D_TEXTURES;
   }
}



/* ============================= SHADERS =======================================
 */

static void *
nv50_sp_state_create(struct pipe_context *pipe,
                     const struct pipe_shader_state *cso,
                     enum pipe_shader_type type)
{
   struct nv50_program *prog;

   prog = CALLOC_STRUCT(nv50_program);
   if (!prog)
      return NULL;

   prog->type = type;
   prog->pipe.type = cso->type;

   switch (cso->type) {
   case PIPE_SHADER_IR_TGSI:
      prog->pipe.tokens = tgsi_dup_tokens(cso->tokens);
      break;
   case PIPE_SHADER_IR_NIR:
      prog->pipe.ir.nir = cso->ir.nir;
      break;
   default:
      assert(!"unsupported IR!");
      free(prog);
      return NULL;
   }

   if (cso->stream_output.num_outputs)
      prog->pipe.stream_output = cso->stream_output;

   prog->translated = nv50_program_translate(
         prog, nv50_context(pipe)->screen->base.device->chipset,
         &nouveau_context(pipe)->debug);

   return (void *)prog;
}

static void
nv50_sp_state_delete(struct pipe_context *pipe, void *hwcso)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   struct nv50_program *prog = (struct nv50_program *)hwcso;

   simple_mtx_lock(&nv50->screen->state_lock);
   nv50_program_destroy(nv50, prog);
   simple_mtx_unlock(&nv50->screen->state_lock);

   if (prog->pipe.type == PIPE_SHADER_IR_TGSI)
      FREE((void *)prog->pipe.tokens);
   else if (prog->pipe.type == PIPE_SHADER_IR_NIR)
      ralloc_free(prog->pipe.ir.nir);
   FREE(prog);
}

static void *
nv50_vp_state_create(struct pipe_context *pipe,
                     const struct pipe_shader_state *cso)
{
   return nv50_sp_state_create(pipe, cso, PIPE_SHADER_VERTEX);
}

static void
nv50_vp_state_bind(struct pipe_context *pipe, void *hwcso)
{
    struct nv50_context *nv50 = nv50_context(pipe);

    nv50->vertprog = hwcso;
    nv50->dirty_3d |= NV50_NEW_3D_VERTPROG;
}

static void *
nv50_fp_state_create(struct pipe_context *pipe,
                     const struct pipe_shader_state *cso)
{
   return nv50_sp_state_create(pipe, cso, PIPE_SHADER_FRAGMENT);
}

static void
nv50_fp_state_bind(struct pipe_context *pipe, void *hwcso)
{
    struct nv50_context *nv50 = nv50_context(pipe);

    nv50->fragprog = hwcso;
    nv50->dirty_3d |= NV50_NEW_3D_FRAGPROG;
}

static void *
nv50_gp_state_create(struct pipe_context *pipe,
                     const struct pipe_shader_state *cso)
{
   return nv50_sp_state_create(pipe, cso, PIPE_SHADER_GEOMETRY);
}

static void
nv50_gp_state_bind(struct pipe_context *pipe, void *hwcso)
{
    struct nv50_context *nv50 = nv50_context(pipe);

    nv50->gmtyprog = hwcso;
    nv50->dirty_3d |= NV50_NEW_3D_GMTYPROG;
}

static void *
nv50_cp_state_create(struct pipe_context *pipe,
                     const struct pipe_compute_state *cso)
{
   struct nv50_program *prog;

   prog = CALLOC_STRUCT(nv50_program);
   if (!prog)
      return NULL;
   prog->type = PIPE_SHADER_COMPUTE;
   prog->pipe.type = cso->ir_type;

   switch(cso->ir_type) {
   case PIPE_SHADER_IR_TGSI:
      prog->pipe.tokens = tgsi_dup_tokens((const struct tgsi_token *)cso->prog);
      break;
   case PIPE_SHADER_IR_NIR:
      prog->pipe.ir.nir = (nir_shader *)cso->prog;
      break;
   default:
      assert(!"unsupported IR!");
      free(prog);
      return NULL;
   }

   prog->cp.smem_size = cso->static_shared_mem;
   prog->parm_size = cso->req_input_mem;

   return (void *)prog;
}

static void
nv50_cp_state_bind(struct pipe_context *pipe, void *hwcso)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->compprog = hwcso;
   nv50->dirty_cp |= NV50_NEW_CP_PROGRAM;
}

static void
nv50_set_constant_buffer(struct pipe_context *pipe,
                         enum pipe_shader_type shader, uint index,
                         bool take_ownership,
                         const struct pipe_constant_buffer *cb)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   struct pipe_resource *res = cb ? cb->buffer : NULL;
   const unsigned s = nv50_context_shader_stage(shader);
   const unsigned i = index;

   if (unlikely(shader == PIPE_SHADER_COMPUTE)) {
      if (nv50->constbuf[s][i].user)
         nv50->constbuf[s][i].u.buf = NULL;
      else
      if (nv50->constbuf[s][i].u.buf)
         nouveau_bufctx_reset(nv50->bufctx_cp, NV50_BIND_CP_CB(i));

      nv50->dirty_cp |= NV50_NEW_CP_CONSTBUF;
   } else {
      if (nv50->constbuf[s][i].user)
         nv50->constbuf[s][i].u.buf = NULL;
      else
      if (nv50->constbuf[s][i].u.buf)
         nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_3D_CB(s, i));

      nv50->dirty_3d |= NV50_NEW_3D_CONSTBUF;
   }
   nv50->constbuf_dirty[s] |= 1 << i;

   if (nv50->constbuf[s][i].u.buf)
      nv04_resource(nv50->constbuf[s][i].u.buf)->cb_bindings[s] &= ~(1 << i);

   if (take_ownership) {
      pipe_resource_reference(&nv50->constbuf[s][i].u.buf, NULL);
      nv50->constbuf[s][i].u.buf = res;
   } else {
      pipe_resource_reference(&nv50->constbuf[s][i].u.buf, res);
   }

   nv50->constbuf[s][i].user = (cb && cb->user_buffer) ? true : false;
   if (nv50->constbuf[s][i].user) {
      nv50->constbuf[s][i].u.data = cb->user_buffer;
      nv50->constbuf[s][i].size = MIN2(cb->buffer_size, 0x10000);
      nv50->constbuf_valid[s] |= 1 << i;
      nv50->constbuf_coherent[s] &= ~(1 << i);
   } else
   if (cb) {
      nv50->constbuf[s][i].offset = cb->buffer_offset;
      nv50->constbuf[s][i].size = MIN2(align(cb->buffer_size, 0x100), 0x10000);
      nv50->constbuf_valid[s] |= 1 << i;
      if (res && res->flags & PIPE_RESOURCE_FLAG_MAP_COHERENT)
         nv50->constbuf_coherent[s] |= 1 << i;
      else
         nv50->constbuf_coherent[s] &= ~(1 << i);
   }
   else {
      nv50->constbuf_valid[s] &= ~(1 << i);
      nv50->constbuf_coherent[s] &= ~(1 << i);
   }
}

/* =============================================================================
 */

static void
nv50_set_blend_color(struct pipe_context *pipe,
                     const struct pipe_blend_color *bcol)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->blend_colour = *bcol;
   nv50->dirty_3d |= NV50_NEW_3D_BLEND_COLOUR;
}

static void
nv50_set_stencil_ref(struct pipe_context *pipe,
                     const struct pipe_stencil_ref sr)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->stencil_ref = sr;
   nv50->dirty_3d |= NV50_NEW_3D_STENCIL_REF;
}

static void
nv50_set_clip_state(struct pipe_context *pipe,
                    const struct pipe_clip_state *clip)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   memcpy(nv50->clip.ucp, clip->ucp, sizeof(clip->ucp));

   nv50->dirty_3d |= NV50_NEW_3D_CLIP;
}

static void
nv50_set_sample_mask(struct pipe_context *pipe, unsigned sample_mask)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->sample_mask = sample_mask;
   nv50->dirty_3d |= NV50_NEW_3D_SAMPLE_MASK;
}

static void
nv50_set_min_samples(struct pipe_context *pipe, unsigned min_samples)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   if (nv50->min_samples != min_samples) {
      nv50->min_samples = min_samples;
      nv50->dirty_3d |= NV50_NEW_3D_MIN_SAMPLES;
   }
}

static void
nv50_set_framebuffer_state(struct pipe_context *pipe,
                           const struct pipe_framebuffer_state *fb)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_3D_FB);

   util_copy_framebuffer_state(&nv50->framebuffer, fb);

   nv50->dirty_3d |= NV50_NEW_3D_FRAMEBUFFER | NV50_NEW_3D_TEXTURES;
}

static void
nv50_set_polygon_stipple(struct pipe_context *pipe,
                         const struct pipe_poly_stipple *stipple)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->stipple = *stipple;
   nv50->dirty_3d |= NV50_NEW_3D_STIPPLE;
}

static void
nv50_set_scissor_states(struct pipe_context *pipe,
                        unsigned start_slot,
                        unsigned num_scissors,
                        const struct pipe_scissor_state *scissor)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   int i;

   assert(start_slot + num_scissors <= NV50_MAX_VIEWPORTS);
   for (i = 0; i < num_scissors; i++) {
      if (!memcmp(&nv50->scissors[start_slot + i], &scissor[i], sizeof(*scissor)))
         continue;
      nv50->scissors[start_slot + i] = scissor[i];
      nv50->scissors_dirty |= 1 << (start_slot + i);
      nv50->dirty_3d |= NV50_NEW_3D_SCISSOR;
   }
}

static void
nv50_set_viewport_states(struct pipe_context *pipe,
                         unsigned start_slot,
                         unsigned num_viewports,
                         const struct pipe_viewport_state *vpt)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   int i;

   assert(start_slot + num_viewports <= NV50_MAX_VIEWPORTS);
   for (i = 0; i < num_viewports; i++) {
      if (!memcmp(&nv50->viewports[start_slot + i], &vpt[i], sizeof(*vpt)))
         continue;
      nv50->viewports[start_slot + i] = vpt[i];
      nv50->viewports_dirty |= 1 << (start_slot + i);
      nv50->dirty_3d |= NV50_NEW_3D_VIEWPORT;
   }
}

static void
nv50_set_window_rectangles(struct pipe_context *pipe,
                           bool include,
                           unsigned num_rectangles,
                           const struct pipe_scissor_state *rectangles)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->window_rect.inclusive = include;
   nv50->window_rect.rects = MIN2(num_rectangles, NV50_MAX_WINDOW_RECTANGLES);
   memcpy(nv50->window_rect.rect, rectangles,
          sizeof(struct pipe_scissor_state) * nv50->window_rect.rects);

   nv50->dirty_3d |= NV50_NEW_3D_WINDOW_RECTS;
}

static void
nv50_set_vertex_buffers(struct pipe_context *pipe,
                        unsigned start_slot, unsigned count,
                        unsigned unbind_num_trailing_slots,
                        bool take_ownership,
                        const struct pipe_vertex_buffer *vb)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   unsigned i;

   nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_3D_VERTEX);
   nv50->dirty_3d |= NV50_NEW_3D_ARRAYS;

   util_set_vertex_buffers_count(nv50->vtxbuf, &nv50->num_vtxbufs, vb,
                                 start_slot, count,
                                 unbind_num_trailing_slots,
                                 take_ownership);

   unsigned clear_mask = ~u_bit_consecutive(start_slot + count, unbind_num_trailing_slots);
   nv50->vbo_user &= clear_mask;
   nv50->vbo_constant &= clear_mask;
   nv50->vtxbufs_coherent &= clear_mask;

   if (!vb) {
      clear_mask = ~u_bit_consecutive(start_slot, count);
      nv50->vbo_user &= clear_mask;
      nv50->vbo_constant &= clear_mask;
      nv50->vtxbufs_coherent &= clear_mask;
      return;
   }

   for (i = 0; i < count; ++i) {
      unsigned dst_index = start_slot + i;

      if (vb[i].is_user_buffer) {
         nv50->vbo_user |= 1 << dst_index;
         if (!vb[i].stride)
            nv50->vbo_constant |= 1 << dst_index;
         else
            nv50->vbo_constant &= ~(1 << dst_index);
         nv50->vtxbufs_coherent &= ~(1 << dst_index);
      } else {
         nv50->vbo_user &= ~(1 << dst_index);
         nv50->vbo_constant &= ~(1 << dst_index);

         if (vb[i].buffer.resource &&
             vb[i].buffer.resource->flags & PIPE_RESOURCE_FLAG_MAP_COHERENT)
            nv50->vtxbufs_coherent |= (1 << dst_index);
         else
            nv50->vtxbufs_coherent &= ~(1 << dst_index);
      }
   }
}

static void
nv50_vertex_state_bind(struct pipe_context *pipe, void *hwcso)
{
   struct nv50_context *nv50 = nv50_context(pipe);

   nv50->vertex = hwcso;
   nv50->dirty_3d |= NV50_NEW_3D_VERTEX;
}

static struct pipe_stream_output_target *
nv50_so_target_create(struct pipe_context *pipe,
                      struct pipe_resource *res,
                      unsigned offset, unsigned size)
{
   struct nv04_resource *buf = (struct nv04_resource *)res;
   struct nv50_so_target *targ = MALLOC_STRUCT(nv50_so_target);
   if (!targ)
      return NULL;

   if (nouveau_context(pipe)->screen->class_3d >= NVA0_3D_CLASS) {
      targ->pq = pipe->create_query(pipe,
                                    NVA0_HW_QUERY_STREAM_OUTPUT_BUFFER_OFFSET, 0);
      if (!targ->pq) {
         FREE(targ);
         return NULL;
      }
   } else {
      targ->pq = NULL;
   }
   targ->clean = true;

   targ->pipe.buffer_size = size;
   targ->pipe.buffer_offset = offset;
   targ->pipe.context = pipe;
   targ->pipe.buffer = NULL;
   pipe_resource_reference(&targ->pipe.buffer, res);
   pipe_reference_init(&targ->pipe.reference, 1);

   assert(buf->base.target == PIPE_BUFFER);
   util_range_add(&buf->base, &buf->valid_buffer_range, offset, offset + size);

   return &targ->pipe;
}

static void
nva0_so_target_save_offset(struct pipe_context *pipe,
                           struct pipe_stream_output_target *ptarg,
                           unsigned index, bool serialize)
{
   struct nv50_so_target *targ = nv50_so_target(ptarg);

   if (serialize) {
      struct nouveau_pushbuf *push = nv50_context(pipe)->base.pushbuf;
      PUSH_SPACE(push, 2);
      BEGIN_NV04(push, SUBC_3D(NV50_GRAPH_SERIALIZE), 1);
      PUSH_DATA (push, 0);
   }

   nv50_query(targ->pq)->index = index;
   pipe->end_query(pipe, targ->pq);
}

static void
nv50_so_target_destroy(struct pipe_context *pipe,
                       struct pipe_stream_output_target *ptarg)
{
   struct nv50_so_target *targ = nv50_so_target(ptarg);
   if (targ->pq)
      pipe->destroy_query(pipe, targ->pq);
   pipe_resource_reference(&targ->pipe.buffer, NULL);
   FREE(targ);
}

static void
nv50_set_stream_output_targets(struct pipe_context *pipe,
                               unsigned num_targets,
                               struct pipe_stream_output_target **targets,
                               const unsigned *offsets)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   unsigned i;
   bool serialize = true;
   const bool can_resume = nv50->screen->base.class_3d >= NVA0_3D_CLASS;

   assert(num_targets <= 4);

   for (i = 0; i < num_targets; ++i) {
      const bool changed = nv50->so_target[i] != targets[i];
      const bool append = (offsets[i] == (unsigned)-1);
      if (!changed && append)
         continue;
      nv50->so_targets_dirty |= 1 << i;

      if (can_resume && changed && nv50->so_target[i]) {
         nva0_so_target_save_offset(pipe, nv50->so_target[i], i, serialize);
         serialize = false;
      }

      if (targets[i] && !append) {
         nv50_so_target(targets[i])->clean = true;
         nv50->so_used[i] = 0;
      }

      pipe_so_target_reference(&nv50->so_target[i], targets[i]);
   }
   for (; i < nv50->num_so_targets; ++i) {
      if (can_resume && nv50->so_target[i]) {
         nva0_so_target_save_offset(pipe, nv50->so_target[i], i, serialize);
         serialize = false;
      }
      pipe_so_target_reference(&nv50->so_target[i], NULL);
      nv50->so_targets_dirty |= 1 << i;
   }
   nv50->num_so_targets = num_targets;

   if (nv50->so_targets_dirty) {
      nouveau_bufctx_reset(nv50->bufctx_3d, NV50_BIND_3D_SO);
      nv50->dirty_3d |= NV50_NEW_3D_STRMOUT;
   }
}

static bool
nv50_bind_images_range(struct nv50_context *nv50,
                       unsigned start, unsigned nr,
                       const struct pipe_image_view *pimages)
{
   const unsigned end = start + nr;
   unsigned mask = 0;
   unsigned i;

   if (pimages) {
      for (i = start; i < end; ++i) {
         struct pipe_image_view *img = &nv50->images[i];
         const unsigned p = i - start;

         if (img->resource == pimages[p].resource &&
             img->format == pimages[p].format &&
             img->access == pimages[p].access) {
            if (img->resource == NULL)
               continue;
            if (img->resource->target == PIPE_BUFFER &&
                img->u.buf.offset == pimages[p].u.buf.offset &&
                img->u.buf.size == pimages[p].u.buf.size)
               continue;
            if (img->resource->target != PIPE_BUFFER &&
                img->u.tex.first_layer == pimages[p].u.tex.first_layer &&
                img->u.tex.last_layer == pimages[p].u.tex.last_layer &&
                img->u.tex.level == pimages[p].u.tex.level)
               continue;
         }

         mask |= (1 << i);
         if (pimages[p].resource)
            nv50->images_valid |= (1 << i);
         else
            nv50->images_valid &= ~(1 << i);

         img->format = pimages[p].format;
         img->access = pimages[p].access;
         if (pimages[p].resource && pimages[p].resource->target == PIPE_BUFFER)
            img->u.buf = pimages[p].u.buf;
         else
            img->u.tex = pimages[p].u.tex;

         pipe_resource_reference(
               &img->resource, pimages[p].resource);
      }
      if (!mask)
         return false;
   } else {
      mask = ((1 << nr) - 1) << start;
      if (!(nv50->images_valid & mask))
         return false;
      for (i = start; i < end; ++i) {
         pipe_resource_reference(&nv50->images[i].resource, NULL);
      }
      nv50->images_valid &= ~mask;
   }
   nv50->images_dirty |= mask;

   nouveau_bufctx_reset(nv50->bufctx_cp, NV50_BIND_CP_SUF);

   return true;
}

static void
nv50_set_shader_images(struct pipe_context *pipe,
                       enum pipe_shader_type shader,
                       unsigned start, unsigned nr,
                       unsigned unbind_num_trailing_slots,
                       const struct pipe_image_view *images)
{
   const unsigned s = nv50_context_shader_stage(shader);

   if (s != NV50_SHADER_STAGE_COMPUTE)
      return;

   nv50_bind_images_range(nv50_context(pipe), start + nr,
                          unbind_num_trailing_slots, NULL);

   if (!nv50_bind_images_range(nv50_context(pipe), start, nr, images))
      return;

   nv50_context(pipe)->dirty_cp |= NV50_NEW_CP_SURFACES;
}

static void
nv50_set_compute_resources(struct pipe_context *pipe,
                           unsigned start, unsigned nr,
                           struct pipe_surface **resources)
{
   /* TODO: bind surfaces */
}

static bool
nv50_bind_buffers_range(struct nv50_context *nv50,
                        unsigned start, unsigned nr,
                        const struct pipe_shader_buffer *pbuffers)
{
   const unsigned end = start + nr;
   unsigned mask = 0;
   unsigned i;

   if (pbuffers) {
      for (i = start; i < end; ++i) {
         struct pipe_shader_buffer *buf = &nv50->buffers[i];
         const unsigned p = i - start;
         if (buf->buffer == pbuffers[p].buffer &&
             buf->buffer_offset == pbuffers[p].buffer_offset &&
             buf->buffer_size == pbuffers[p].buffer_size)
            continue;

         mask |= (1 << i);
         if (pbuffers[p].buffer)
            nv50->buffers_valid |= (1 << i);
         else
            nv50->buffers_valid &= ~(1 << i);
         buf->buffer_offset = pbuffers[p].buffer_offset;
         buf->buffer_size = pbuffers[p].buffer_size;
         pipe_resource_reference(&buf->buffer, pbuffers[p].buffer);
      }
      if (!mask)
         return false;
   } else {
      mask = ((1 << nr) - 1) << start;
      if (!(nv50->buffers_valid & mask))
         return false;
      for (i = start; i < end; ++i)
         pipe_resource_reference(&nv50->buffers[i].buffer, NULL);
      nv50->buffers_valid &= ~mask;
   }
   nv50->buffers_dirty |= mask;

   nouveau_bufctx_reset(nv50->bufctx_cp, NV50_BIND_CP_BUF);

   return true;
}

static void
nv50_set_shader_buffers(struct pipe_context *pipe,
                        enum pipe_shader_type shader,
                        unsigned start, unsigned nr,
                        const struct pipe_shader_buffer *buffers,
                        unsigned writable_bitmask)
{
   const unsigned s = nv50_context_shader_stage(shader);

   if (s != NV50_SHADER_STAGE_COMPUTE)
      return;

   if (!nv50_bind_buffers_range(nv50_context(pipe), start, nr, buffers))
      return;

   nv50_context(pipe)->dirty_cp |= NV50_NEW_CP_BUFFERS;
}

static inline void
nv50_set_global_handle(uint32_t *phandle, struct pipe_resource *res)
{
   struct nv04_resource *buf = nv04_resource(res);
   if (buf) {
      uint64_t limit = (buf->address + buf->base.width0) - 1;
      if (limit < (1ULL << 32)) {
         *phandle = (uint32_t)buf->address;
      } else {
         NOUVEAU_ERR("Cannot map into TGSI_RESOURCE_GLOBAL: "
                     "resource not contained within 32-bit address space !\n");
         *phandle = 0;
      }
   } else {
      *phandle = 0;
   }
}

static void
nv50_set_global_bindings(struct pipe_context *pipe,
                         unsigned start, unsigned nr,
                         struct pipe_resource **resources,
                         uint32_t **handles)
{
   struct nv50_context *nv50 = nv50_context(pipe);
   struct pipe_resource **ptr;
   unsigned i;
   const unsigned end = start + nr;

   if (nv50->global_residents.size < (end * sizeof(struct pipe_resource *))) {
      const unsigned old_size = nv50->global_residents.size;
      if (util_dynarray_resize(&nv50->global_residents, struct pipe_resource *, end)) {
         memset((uint8_t *)nv50->global_residents.data + old_size, 0,
                nv50->global_residents.size - old_size);
      } else {
         NOUVEAU_ERR("Could not resize global residents array\n");
         return;
      }
   }

   if (resources) {
      ptr = util_dynarray_element(
         &nv50->global_residents, struct pipe_resource *, start);
      for (i = 0; i < nr; ++i) {
         pipe_resource_reference(&ptr[i], resources[i]);
         nv50_set_global_handle(handles[i], resources[i]);
      }
   } else {
      ptr = util_dynarray_element(
         &nv50->global_residents, struct pipe_resource *, start);
      for (i = 0; i < nr; ++i)
         pipe_resource_reference(&ptr[i], NULL);
   }

   nouveau_bufctx_reset(nv50->bufctx_cp, NV50_BIND_CP_GLOBAL);

   nv50->dirty_cp |= NV50_NEW_CP_GLOBALS;
}

void
nv50_init_state_functions(struct nv50_context *nv50)
{
   struct pipe_context *pipe = &nv50->base.pipe;

   pipe->create_blend_state = nv50_blend_state_create;
   pipe->bind_blend_state = nv50_blend_state_bind;
   pipe->delete_blend_state = nv50_blend_state_delete;

   pipe->create_rasterizer_state = nv50_rasterizer_state_create;
   pipe->bind_rasterizer_state = nv50_rasterizer_state_bind;
   pipe->delete_rasterizer_state = nv50_rasterizer_state_delete;

   pipe->create_depth_stencil_alpha_state = nv50_zsa_state_create;
   pipe->bind_depth_stencil_alpha_state = nv50_zsa_state_bind;
   pipe->delete_depth_stencil_alpha_state = nv50_zsa_state_delete;

   pipe->create_sampler_state = nv50_sampler_state_create;
   pipe->delete_sampler_state = nv50_sampler_state_delete;
   pipe->bind_sampler_states   = nv50_bind_sampler_states;

   pipe->create_sampler_view = nv50_create_sampler_view;
   pipe->sampler_view_destroy = nv50_sampler_view_destroy;
   pipe->set_sampler_views = nv50_set_sampler_views;

   pipe->create_vs_state = nv50_vp_state_create;
   pipe->create_fs_state = nv50_fp_state_create;
   pipe->create_gs_state = nv50_gp_state_create;
   pipe->create_compute_state = nv50_cp_state_create;
   pipe->bind_vs_state = nv50_vp_state_bind;
   pipe->bind_fs_state = nv50_fp_state_bind;
   pipe->bind_gs_state = nv50_gp_state_bind;
   pipe->bind_compute_state = nv50_cp_state_bind;
   pipe->delete_vs_state = nv50_sp_state_delete;
   pipe->delete_fs_state = nv50_sp_state_delete;
   pipe->delete_gs_state = nv50_sp_state_delete;
   pipe->delete_compute_state = nv50_sp_state_delete;

   pipe->set_blend_color = nv50_set_blend_color;
   pipe->set_stencil_ref = nv50_set_stencil_ref;
   pipe->set_clip_state = nv50_set_clip_state;
   pipe->set_sample_mask = nv50_set_sample_mask;
   pipe->set_min_samples = nv50_set_min_samples;
   pipe->set_constant_buffer = nv50_set_constant_buffer;
   pipe->set_framebuffer_state = nv50_set_framebuffer_state;
   pipe->set_polygon_stipple = nv50_set_polygon_stipple;
   pipe->set_scissor_states = nv50_set_scissor_states;
   pipe->set_viewport_states = nv50_set_viewport_states;
   pipe->set_window_rectangles = nv50_set_window_rectangles;

   pipe->create_vertex_elements_state = nv50_vertex_state_create;
   pipe->delete_vertex_elements_state = nv50_vertex_state_delete;
   pipe->bind_vertex_elements_state = nv50_vertex_state_bind;

   pipe->set_vertex_buffers = nv50_set_vertex_buffers;

   pipe->create_stream_output_target = nv50_so_target_create;
   pipe->stream_output_target_destroy = nv50_so_target_destroy;
   pipe->set_stream_output_targets = nv50_set_stream_output_targets;

   pipe->set_global_binding = nv50_set_global_bindings;
   pipe->set_compute_resources = nv50_set_compute_resources;
   pipe->set_shader_images = nv50_set_shader_images;
   pipe->set_shader_buffers = nv50_set_shader_buffers;

   nv50->sample_mask = ~0;
   nv50->min_samples = 1;
}
