/*
 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
 * Copyright © 2018 Google, 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 (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 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:
 *    Rob Clark <robclark@freedesktop.org>
 */

#include "pipe/p_state.h"
#include "util/format/u_format.h"
#include "util/u_helpers.h"
#include "util/u_memory.h"
#include "util/u_string.h"
#include "util/u_viewport.h"

#include "common/freedreno_guardband.h"
#include "freedreno_query_hw.h"
#include "freedreno_resource.h"
#include "freedreno_state.h"
#include "freedreno_tracepoints.h"

#include "fd6_blend.h"
#include "fd6_const.h"
#include "fd6_context.h"
#include "fd6_emit.h"
#include "fd6_format.h"
#include "fd6_image.h"
#include "fd6_pack.h"
#include "fd6_program.h"
#include "fd6_rasterizer.h"
#include "fd6_texture.h"
#include "fd6_zsa.h"

/* Border color layout is diff from a4xx/a5xx.. if it turns out to be
 * the same as a6xx then move this somewhere common ;-)
 *
 * Entry layout looks like (total size, 0x60 bytes):
 */

struct PACKED bcolor_entry {
   uint32_t fp32[4];
   uint16_t ui16[4];
   int16_t si16[4];
   uint16_t fp16[4];
   uint16_t rgb565;
   uint16_t rgb5a1;
   uint16_t rgba4;
   uint8_t __pad0[2];
   uint8_t ui8[4];
   int8_t si8[4];
   uint32_t rgb10a2;
   uint32_t z24; /* also s8? */
   uint16_t
      srgb[4]; /* appears to duplicate fp16[], but clamped, used for srgb */
   uint8_t __pad1[56];
};

#define FD6_BORDER_COLOR_SIZE sizeof(struct bcolor_entry)
#define FD6_BORDER_COLOR_UPLOAD_SIZE                                           \
   (2 * PIPE_MAX_SAMPLERS * FD6_BORDER_COLOR_SIZE)

static void
setup_border_colors(struct fd_texture_stateobj *tex,
                    struct bcolor_entry *entries)
{
   unsigned i, j;
   STATIC_ASSERT(sizeof(struct bcolor_entry) == FD6_BORDER_COLOR_SIZE);

   for (i = 0; i < tex->num_samplers; i++) {
      struct bcolor_entry *e = &entries[i];
      struct pipe_sampler_state *sampler = tex->samplers[i];
      union pipe_color_union *bc;

      if (!sampler)
         continue;

      bc = &sampler->border_color;

      /*
       * XXX HACK ALERT XXX
       *
       * The border colors need to be swizzled in a particular
       * format-dependent order. Even though samplers don't know about
       * formats, we can assume that with a GL state tracker, there's a
       * 1:1 correspondence between sampler and texture. Take advantage
       * of that knowledge.
       */
      if ((i >= tex->num_textures) || !tex->textures[i])
         continue;

      struct pipe_sampler_view *view = tex->textures[i];
      enum pipe_format format = view->format;
      const struct util_format_description *desc =
         util_format_description(format);
      const struct fd_resource *rsc = fd_resource(view->texture);

      e->rgb565 = 0;
      e->rgb5a1 = 0;
      e->rgba4 = 0;
      e->rgb10a2 = 0;
      e->z24 = 0;

      unsigned char swiz[4];

      fd6_tex_swiz(format, rsc->layout.tile_mode, swiz, view->swizzle_r, view->swizzle_g,
                   view->swizzle_b, view->swizzle_a);

      for (j = 0; j < 4; j++) {
         int c = swiz[j];
         int cd = c;

         /*
          * HACK: for PIPE_FORMAT_X24S8_UINT we end up w/ the
          * stencil border color value in bc->ui[0] but according
          * to desc->swizzle and desc->channel, the .x/.w component
          * is NONE and the stencil value is in the y component.
          * Meanwhile the hardware wants this in the .w component
          * for x24s8 and the .x component for x32_s8x24.
          */
         if ((format == PIPE_FORMAT_X24S8_UINT) ||
             (format == PIPE_FORMAT_X32_S8X24_UINT)) {
            if (j == 0) {
               c = 1;
               cd = (format == PIPE_FORMAT_X32_S8X24_UINT) ? 0 : 3;
            } else {
               continue;
            }
         }

         if (c >= 4)
            continue;

         if (desc->channel[c].pure_integer) {
            uint16_t clamped;
            switch (desc->channel[c].size) {
            case 2:
               assert(desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED);
               clamped = CLAMP(bc->ui[j], 0, 0x3);
               break;
            case 8:
               if (desc->channel[c].type == UTIL_FORMAT_TYPE_SIGNED)
                  clamped = CLAMP(bc->i[j], -128, 127);
               else
                  clamped = CLAMP(bc->ui[j], 0, 255);
               break;
            case 10:
               assert(desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED);
               clamped = CLAMP(bc->ui[j], 0, 0x3ff);
               break;
            case 16:
               if (desc->channel[c].type == UTIL_FORMAT_TYPE_SIGNED)
                  clamped = CLAMP(bc->i[j], -32768, 32767);
               else
                  clamped = CLAMP(bc->ui[j], 0, 65535);
               break;
            default:
               assert(!"Unexpected bit size");
            case 32:
               clamped = 0;
               break;
            }
            e->fp32[cd] = bc->ui[j];
            e->fp16[cd] = clamped;
         } else {
            float f = bc->f[j];
            float f_u = CLAMP(f, 0, 1);
            float f_s = CLAMP(f, -1, 1);

            e->fp32[c] = fui(f);
            e->fp16[c] = _mesa_float_to_half(f);
            e->srgb[c] = _mesa_float_to_half(f_u);
            e->ui16[c] = f_u * 0xffff;
            e->si16[c] = f_s * 0x7fff;
            e->ui8[c] = f_u * 0xff;
            e->si8[c] = f_s * 0x7f;
            if (c == 1)
               e->rgb565 |= (int)(f_u * 0x3f) << 5;
            else if (c < 3)
               e->rgb565 |= (int)(f_u * 0x1f) << (c ? 11 : 0);
            if (c == 3)
               e->rgb5a1 |= (f_u > 0.5) ? 0x8000 : 0;
            else
               e->rgb5a1 |= (int)(f_u * 0x1f) << (c * 5);
            if (c == 3)
               e->rgb10a2 |= (int)(f_u * 0x3) << 30;
            else
               e->rgb10a2 |= (int)(f_u * 0x3ff) << (c * 10);
            e->rgba4 |= (int)(f_u * 0xf) << (c * 4);
            if (c == 0)
               e->z24 = f_u * 0xffffff;
         }
      }

#ifdef DEBUG
      memset(&e->__pad0, 0, sizeof(e->__pad0));
      memset(&e->__pad1, 0, sizeof(e->__pad1));
#endif
   }
}

static void
emit_border_color(struct fd_context *ctx, struct fd_ringbuffer *ring) assert_dt
{
   struct fd6_context *fd6_ctx = fd6_context(ctx);
   struct bcolor_entry *entries;
   unsigned off;
   void *ptr;

   STATIC_ASSERT(sizeof(struct bcolor_entry) == FD6_BORDER_COLOR_SIZE);

   u_upload_alloc(fd6_ctx->border_color_uploader, 0,
                  FD6_BORDER_COLOR_UPLOAD_SIZE, FD6_BORDER_COLOR_UPLOAD_SIZE,
                  &off, &fd6_ctx->border_color_buf, &ptr);

   entries = ptr;

   setup_border_colors(&ctx->tex[PIPE_SHADER_VERTEX], &entries[0]);
   setup_border_colors(&ctx->tex[PIPE_SHADER_FRAGMENT],
                       &entries[ctx->tex[PIPE_SHADER_VERTEX].num_samplers]);

   OUT_PKT4(ring, REG_A6XX_SP_TP_BORDER_COLOR_BASE_ADDR, 2);
   OUT_RELOC(ring, fd_resource(fd6_ctx->border_color_buf)->bo, off, 0, 0);

   u_upload_unmap(fd6_ctx->border_color_uploader);
}

static void
fd6_emit_fb_tex(struct fd_ringbuffer *state, struct fd_context *ctx) assert_dt
{
   struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
   struct pipe_surface *psurf = pfb->cbufs[0];
   struct fd_resource *rsc = fd_resource(psurf->texture);

   OUT_RINGP(state, 0, &ctx->batch->fb_read_patches); /* texconst0, patched in gmem emit */
   OUT_RING(state, A6XX_TEX_CONST_1_WIDTH(pfb->width) |
                      A6XX_TEX_CONST_1_HEIGHT(pfb->height));
   OUT_RING(state, 0); /* texconst2, patched in gmem emit */
   OUT_RING(state, A6XX_TEX_CONST_3_ARRAY_PITCH(rsc->layout.layer_size));
   OUT_RING(state, 0); /* BASE_LO, patched in gmem emit */
   OUT_RING(state, 0); /* BASE_HI, patched in gmem emit */
   OUT_RING(state, 0); /* texconst6 */
   OUT_RING(state, 0); /* texconst7 */
   OUT_RING(state, 0); /* texconst8 */
   OUT_RING(state, 0); /* texconst9 */
   OUT_RING(state, 0); /* texconst10 */
   OUT_RING(state, 0); /* texconst11 */
   OUT_RING(state, 0);
   OUT_RING(state, 0);
   OUT_RING(state, 0);
   OUT_RING(state, 0);
}

bool
fd6_emit_textures(struct fd_context *ctx, struct fd_ringbuffer *ring,
                  enum pipe_shader_type type, struct fd_texture_stateobj *tex,
                  unsigned bcolor_offset,
                  /* can be NULL if no image/SSBO/fb state to merge in: */
                  const struct ir3_shader_variant *v)
{
   bool needs_border = false;
   unsigned opcode, tex_samp_reg, tex_const_reg, tex_count_reg;
   enum a6xx_state_block sb;

   switch (type) {
   case PIPE_SHADER_VERTEX:
      sb = SB6_VS_TEX;
      opcode = CP_LOAD_STATE6_GEOM;
      tex_samp_reg = REG_A6XX_SP_VS_TEX_SAMP;
      tex_const_reg = REG_A6XX_SP_VS_TEX_CONST;
      tex_count_reg = REG_A6XX_SP_VS_TEX_COUNT;
      break;
   case PIPE_SHADER_TESS_CTRL:
      sb = SB6_HS_TEX;
      opcode = CP_LOAD_STATE6_GEOM;
      tex_samp_reg = REG_A6XX_SP_HS_TEX_SAMP;
      tex_const_reg = REG_A6XX_SP_HS_TEX_CONST;
      tex_count_reg = REG_A6XX_SP_HS_TEX_COUNT;
      break;
   case PIPE_SHADER_TESS_EVAL:
      sb = SB6_DS_TEX;
      opcode = CP_LOAD_STATE6_GEOM;
      tex_samp_reg = REG_A6XX_SP_DS_TEX_SAMP;
      tex_const_reg = REG_A6XX_SP_DS_TEX_CONST;
      tex_count_reg = REG_A6XX_SP_DS_TEX_COUNT;
      break;
   case PIPE_SHADER_GEOMETRY:
      sb = SB6_GS_TEX;
      opcode = CP_LOAD_STATE6_GEOM;
      tex_samp_reg = REG_A6XX_SP_GS_TEX_SAMP;
      tex_const_reg = REG_A6XX_SP_GS_TEX_CONST;
      tex_count_reg = REG_A6XX_SP_GS_TEX_COUNT;
      break;
   case PIPE_SHADER_FRAGMENT:
      sb = SB6_FS_TEX;
      opcode = CP_LOAD_STATE6_FRAG;
      tex_samp_reg = REG_A6XX_SP_FS_TEX_SAMP;
      tex_const_reg = REG_A6XX_SP_FS_TEX_CONST;
      tex_count_reg = REG_A6XX_SP_FS_TEX_COUNT;
      break;
   case PIPE_SHADER_COMPUTE:
      sb = SB6_CS_TEX;
      opcode = CP_LOAD_STATE6_FRAG;
      tex_samp_reg = REG_A6XX_SP_CS_TEX_SAMP;
      tex_const_reg = REG_A6XX_SP_CS_TEX_CONST;
      tex_count_reg = REG_A6XX_SP_CS_TEX_COUNT;
      break;
   default:
      unreachable("bad state block");
   }

   if (tex->num_samplers > 0) {
      struct fd_ringbuffer *state =
         fd_ringbuffer_new_object(ctx->pipe, tex->num_samplers * 4 * 4);
      for (unsigned i = 0; i < tex->num_samplers; i++) {
         static const struct fd6_sampler_stateobj dummy_sampler = {};
         const struct fd6_sampler_stateobj *sampler =
            tex->samplers[i] ? fd6_sampler_stateobj(tex->samplers[i])
                             : &dummy_sampler;
         OUT_RING(state, sampler->texsamp0);
         OUT_RING(state, sampler->texsamp1);
         OUT_RING(state, sampler->texsamp2 |
                            A6XX_TEX_SAMP_2_BCOLOR(i + bcolor_offset));
         OUT_RING(state, sampler->texsamp3);
         needs_border |= sampler->needs_border;
      }

      /* output sampler state: */
      OUT_PKT7(ring, opcode, 3);
      OUT_RING(ring, CP_LOAD_STATE6_0_DST_OFF(0) |
                        CP_LOAD_STATE6_0_STATE_TYPE(ST6_SHADER) |
                        CP_LOAD_STATE6_0_STATE_SRC(SS6_INDIRECT) |
                        CP_LOAD_STATE6_0_STATE_BLOCK(sb) |
                        CP_LOAD_STATE6_0_NUM_UNIT(tex->num_samplers));
      OUT_RB(ring, state); /* SRC_ADDR_LO/HI */

      OUT_PKT4(ring, tex_samp_reg, 2);
      OUT_RB(ring, state); /* SRC_ADDR_LO/HI */

      fd_ringbuffer_del(state);
   }

   unsigned num_merged_textures = tex->num_textures;
   unsigned num_textures = tex->num_textures;
   if (v) {
      num_merged_textures += v->image_mapping.num_tex;

      if (v->fb_read)
         num_merged_textures++;

      /* There could be more bound textures than what the shader uses.
       * Which isn't known at shader compile time.  So in the case we
       * are merging tex state, only emit the textures that the shader
       * uses (since the image/SSBO related tex state comes immediately
       * after)
       */
      num_textures = v->image_mapping.tex_base;
   }

   if (num_merged_textures > 0) {
      struct fd_ringbuffer *state =
         fd_ringbuffer_new_object(ctx->pipe, num_merged_textures * 16 * 4);
      for (unsigned i = 0; i < num_textures; i++) {
         const struct fd6_pipe_sampler_view *view;

         if (tex->textures[i]) {
            view = fd6_pipe_sampler_view(tex->textures[i]);
            if (unlikely(view->rsc_seqno !=
                         fd_resource(view->base.texture)->seqno)) {
               fd6_sampler_view_update(ctx,
                                       fd6_pipe_sampler_view(tex->textures[i]));
            }
         } else {
            static const struct fd6_pipe_sampler_view dummy_view = {};
            view = &dummy_view;
         }

         OUT_RING(state, view->texconst0);
         OUT_RING(state, view->texconst1);
         OUT_RING(state, view->texconst2);
         OUT_RING(state, view->texconst3);

         if (view->ptr1) {
            OUT_RELOC(state, view->ptr1->bo, view->offset1,
                      (uint64_t)view->texconst5 << 32, 0);
         } else {
            OUT_RING(state, 0x00000000);
            OUT_RING(state, view->texconst5);
         }

         OUT_RING(state, view->texconst6);

         if (view->ptr2) {
            OUT_RELOC(state, view->ptr2->bo, view->offset2, 0, 0);
         } else {
            OUT_RING(state, 0);
            OUT_RING(state, 0);
         }

         OUT_RING(state, view->texconst9);
         OUT_RING(state, view->texconst10);
         OUT_RING(state, view->texconst11);
         OUT_RING(state, 0);
         OUT_RING(state, 0);
         OUT_RING(state, 0);
         OUT_RING(state, 0);
      }

      if (v) {
         const struct ir3_ibo_mapping *mapping = &v->image_mapping;
         struct fd_shaderbuf_stateobj *buf = &ctx->shaderbuf[type];
         struct fd_shaderimg_stateobj *img = &ctx->shaderimg[type];

         for (unsigned i = 0; i < mapping->num_tex; i++) {
            unsigned idx = mapping->tex_to_image[i];
            if (idx & IBO_SSBO) {
               fd6_emit_ssbo_tex(state, &buf->sb[idx & ~IBO_SSBO]);
            } else {
               fd6_emit_image_tex(state, &img->si[idx]);
            }
         }

         if (v->fb_read) {
            fd6_emit_fb_tex(state, ctx);
         }
      }

      /* emit texture state: */
      OUT_PKT7(ring, opcode, 3);
      OUT_RING(ring, CP_LOAD_STATE6_0_DST_OFF(0) |
                        CP_LOAD_STATE6_0_STATE_TYPE(ST6_CONSTANTS) |
                        CP_LOAD_STATE6_0_STATE_SRC(SS6_INDIRECT) |
                        CP_LOAD_STATE6_0_STATE_BLOCK(sb) |
                        CP_LOAD_STATE6_0_NUM_UNIT(num_merged_textures));
      OUT_RB(ring, state); /* SRC_ADDR_LO/HI */

      OUT_PKT4(ring, tex_const_reg, 2);
      OUT_RB(ring, state); /* SRC_ADDR_LO/HI */

      fd_ringbuffer_del(state);
   }

   OUT_PKT4(ring, tex_count_reg, 1);
   OUT_RING(ring, num_merged_textures);

   return needs_border;
}

/* Emits combined texture state, which also includes any Image/SSBO
 * related texture state merged in (because we must have all texture
 * state for a given stage in a single buffer).  In the fast-path, if
 * we don't need to merge in any image/ssbo related texture state, we
 * just use cached texture stateobj.  Otherwise we generate a single-
 * use stateobj.
 *
 * TODO Is there some sane way we can still use cached texture stateobj
 * with image/ssbo in use?
 *
 * returns whether border_color is required:
 */
static bool
fd6_emit_combined_textures(struct fd_ringbuffer *ring, struct fd6_emit *emit,
                           enum pipe_shader_type type,
                           const struct ir3_shader_variant *v) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   bool needs_border = false;

   static const struct {
      enum fd6_state_id state_id;
      unsigned enable_mask;
   } s[PIPE_SHADER_TYPES] = {
      [PIPE_SHADER_VERTEX] = {FD6_GROUP_VS_TEX, ENABLE_ALL},
      [PIPE_SHADER_TESS_CTRL] = {FD6_GROUP_HS_TEX, ENABLE_ALL},
      [PIPE_SHADER_TESS_EVAL] = {FD6_GROUP_DS_TEX, ENABLE_ALL},
      [PIPE_SHADER_GEOMETRY] = {FD6_GROUP_GS_TEX, ENABLE_ALL},
      [PIPE_SHADER_FRAGMENT] = {FD6_GROUP_FS_TEX, ENABLE_DRAW},
   };

   debug_assert(s[type].state_id);

   if (!v->image_mapping.num_tex && !v->fb_read) {
      /* in the fast-path, when we don't have to mix in any image/SSBO
       * related texture state, we can just lookup the stateobj and
       * re-emit that:
       *
       * Also, framebuffer-read is a slow-path because an extra
       * texture needs to be inserted.
       *
       * TODO we can probably simmplify things if we also treated
       * border_color as a slow-path.. this way the tex state key
       * wouldn't depend on bcolor_offset.. but fb_read might rather
       * be *somehow* a fast-path if we eventually used it for PLS.
       * I suppose there would be no harm in just *always* inserting
       * an fb_read texture?
       */
      if ((ctx->dirty_shader[type] & FD_DIRTY_SHADER_TEX) &&
          ctx->tex[type].num_textures > 0) {
         struct fd6_texture_state *tex =
            fd6_texture_state(ctx, type, &ctx->tex[type]);

         needs_border |= tex->needs_border;

         fd6_emit_add_group(emit, tex->stateobj, s[type].state_id,
                            s[type].enable_mask);

         fd6_texture_state_reference(&tex, NULL);
      }
   } else {
      /* In the slow-path, create a one-shot texture state object
       * if either TEX|PROG|SSBO|IMAGE state is dirty:
       */
      if ((ctx->dirty_shader[type] &
           (FD_DIRTY_SHADER_TEX | FD_DIRTY_SHADER_PROG | FD_DIRTY_SHADER_IMAGE |
            FD_DIRTY_SHADER_SSBO)) ||
          v->fb_read) {
         struct fd_texture_stateobj *tex = &ctx->tex[type];
         struct fd_ringbuffer *stateobj = fd_submit_new_ringbuffer(
            ctx->batch->submit, 0x1000, FD_RINGBUFFER_STREAMING);
         unsigned bcolor_offset = fd6_border_color_offset(ctx, type, tex);

         needs_border |=
            fd6_emit_textures(ctx, stateobj, type, tex, bcolor_offset, v);

         fd6_emit_take_group(emit, stateobj, s[type].state_id,
                             s[type].enable_mask);
      }
   }

   return needs_border;
}

static struct fd_ringbuffer *
build_vbo_state(struct fd6_emit *emit) assert_dt
{
   const struct fd_vertex_state *vtx = emit->vtx;

   struct fd_ringbuffer *ring = fd_submit_new_ringbuffer(
      emit->ctx->batch->submit, 4 * (1 + vtx->vertexbuf.count * 4),
      FD_RINGBUFFER_STREAMING);

   OUT_PKT4(ring, REG_A6XX_VFD_FETCH(0), 4 * vtx->vertexbuf.count);
   for (int32_t j = 0; j < vtx->vertexbuf.count; j++) {
      const struct pipe_vertex_buffer *vb = &vtx->vertexbuf.vb[j];
      struct fd_resource *rsc = fd_resource(vb->buffer.resource);
      if (rsc == NULL) {
         OUT_RING(ring, 0);
         OUT_RING(ring, 0);
         OUT_RING(ring, 0);
         OUT_RING(ring, 0);
      } else {
         uint32_t off = vb->buffer_offset;
         uint32_t size = fd_bo_size(rsc->bo) - off;

         OUT_RELOC(ring, rsc->bo, off, 0, 0);
         OUT_RING(ring, size);       /* VFD_FETCH[j].SIZE */
         OUT_RING(ring, vb->stride); /* VFD_FETCH[j].STRIDE */
      }
   }

   return ring;
}

static enum a6xx_ztest_mode
compute_ztest_mode(struct fd6_emit *emit, bool lrz_valid) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
   struct fd6_zsa_stateobj *zsa = fd6_zsa_stateobj(ctx->zsa);
   const struct ir3_shader_variant *fs = emit->fs;

   if (fs->shader->nir->info.fs.early_fragment_tests)
      return A6XX_EARLY_Z;

   if (fs->no_earlyz || fs->writes_pos || !zsa->base.depth_enabled ||
       fs->writes_stencilref) {
      return A6XX_LATE_Z;
   } else if ((fs->has_kill || zsa->alpha_test) &&
              (zsa->writes_zs || !pfb->zsbuf)) {
      /* Slightly odd, but seems like the hw wants us to select
       * LATE_Z mode if there is no depth buffer + discard.  Either
       * that, or when occlusion query is enabled.  See:
       *
       * dEQP-GLES31.functional.fbo.no_attachments.*
       */
      return lrz_valid ? A6XX_EARLY_LRZ_LATE_Z : A6XX_LATE_Z;
   } else {
      return A6XX_EARLY_Z;
   }
}

/**
 * Calculate normalized LRZ state based on zsa/prog/blend state, updating
 * the zsbuf's lrz state as necessary to detect the cases where we need
 * to invalidate lrz.
 */
static struct fd6_lrz_state
compute_lrz_state(struct fd6_emit *emit, bool binning_pass) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
   const struct ir3_shader_variant *fs = emit->fs;
   struct fd6_lrz_state lrz;

   if (!pfb->zsbuf) {
      memset(&lrz, 0, sizeof(lrz));
      if (!binning_pass) {
         lrz.z_mode = compute_ztest_mode(emit, false);
      }
      return lrz;
   }

   struct fd6_blend_stateobj *blend = fd6_blend_stateobj(ctx->blend);
   struct fd6_zsa_stateobj *zsa = fd6_zsa_stateobj(ctx->zsa);
   struct fd_resource *rsc = fd_resource(pfb->zsbuf->texture);

   lrz = zsa->lrz;

   /* normalize lrz state: */
   if (blend->reads_dest || fs->writes_pos || fs->no_earlyz || fs->has_kill) {
      lrz.write = false;
      if (binning_pass)
         lrz.enable = false;
   }

   /* if we change depthfunc direction, bail out on using LRZ.  The
    * LRZ buffer encodes a min/max depth value per block, but if
    * we switch from GT/GE <-> LT/LE, those values cannot be
    * interpreted properly.
    */
   if (zsa->base.depth_enabled && (rsc->lrz_direction != FD_LRZ_UNKNOWN) &&
       (rsc->lrz_direction != lrz.direction)) {
      rsc->lrz_valid = false;
   }

   if (zsa->invalidate_lrz || !rsc->lrz_valid) {
      rsc->lrz_valid = false;
      memset(&lrz, 0, sizeof(lrz));
   }

   if (fs->no_earlyz || fs->writes_pos) {
      lrz.enable = false;
      lrz.write = false;
      lrz.test = false;
   }

   if (!binning_pass) {
      lrz.z_mode = compute_ztest_mode(emit, rsc->lrz_valid);
   }

   /* Once we start writing to the real depth buffer, we lock in the
    * direction for LRZ.. if we have to skip a LRZ write for any
    * reason, it is still safe to have LRZ until there is a direction
    * reversal.  Prior to the reversal, since we disabled LRZ writes
    * in the "unsafe" cases, this just means that the LRZ test may
    * not early-discard some things that end up not passing a later
    * test (ie. be overly concervative).  But once you have a reversal
    * of direction, it is possible to increase/decrease the z value
    * to the point where the overly-conservative test is incorrect.
    */
   if (zsa->base.depth_writemask) {
      rsc->lrz_direction = lrz.direction;
   }

   return lrz;
}

static struct fd_ringbuffer *
build_lrz(struct fd6_emit *emit, bool binning_pass) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   struct fd6_context *fd6_ctx = fd6_context(ctx);
   struct fd6_lrz_state lrz = compute_lrz_state(emit, binning_pass);

   /* If the LRZ state has not changed, we can skip the emit: */
   if (!ctx->last.dirty &&
       !memcmp(&fd6_ctx->last.lrz[binning_pass], &lrz, sizeof(lrz)))
      return NULL;

   fd6_ctx->last.lrz[binning_pass] = lrz;

   struct fd_ringbuffer *ring = fd_submit_new_ringbuffer(
      ctx->batch->submit, 8 * 4, FD_RINGBUFFER_STREAMING);

   OUT_REG(ring,
           A6XX_GRAS_LRZ_CNTL(.enable = lrz.enable, .lrz_write = lrz.write,
                              .greater = lrz.direction == FD_LRZ_GREATER,
                              .z_test_enable = lrz.test, ));
   OUT_REG(ring, A6XX_RB_LRZ_CNTL(.enable = lrz.enable, ));

   OUT_REG(ring, A6XX_RB_DEPTH_PLANE_CNTL(.z_mode = lrz.z_mode, ));

   OUT_REG(ring, A6XX_GRAS_SU_DEPTH_PLANE_CNTL(.z_mode = lrz.z_mode, ));

   return ring;
}

static struct fd_ringbuffer *
build_scissor(struct fd6_emit *emit) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);

   struct fd_ringbuffer *ring = fd_submit_new_ringbuffer(
      emit->ctx->batch->submit, 3 * 4, FD_RINGBUFFER_STREAMING);

   OUT_REG(
      ring,
      A6XX_GRAS_SC_SCREEN_SCISSOR_TL(0, .x = scissor->minx, .y = scissor->miny),
      A6XX_GRAS_SC_SCREEN_SCISSOR_BR(0, .x = MAX2(scissor->maxx, 1) - 1,
                                     .y = MAX2(scissor->maxy, 1) - 1));

   ctx->batch->max_scissor.minx =
      MIN2(ctx->batch->max_scissor.minx, scissor->minx);
   ctx->batch->max_scissor.miny =
      MIN2(ctx->batch->max_scissor.miny, scissor->miny);
   ctx->batch->max_scissor.maxx =
      MAX2(ctx->batch->max_scissor.maxx, scissor->maxx);
   ctx->batch->max_scissor.maxy =
      MAX2(ctx->batch->max_scissor.maxy, scissor->maxy);

   return ring;
}

/* Combination of FD_DIRTY_FRAMEBUFFER | FD_DIRTY_RASTERIZER_DISCARD |
 * FD_DIRTY_PROG | FD_DIRTY_DUAL_BLEND
 */
static struct fd_ringbuffer *
build_prog_fb_rast(struct fd6_emit *emit) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
   const struct fd6_program_state *prog = fd6_emit_get_prog(emit);
   const struct ir3_shader_variant *fs = emit->fs;

   struct fd_ringbuffer *ring = fd_submit_new_ringbuffer(
      ctx->batch->submit, 9 * 4, FD_RINGBUFFER_STREAMING);

   unsigned nr = pfb->nr_cbufs;

   if (ctx->rasterizer->rasterizer_discard)
      nr = 0;

   struct fd6_blend_stateobj *blend = fd6_blend_stateobj(ctx->blend);

   if (blend->use_dual_src_blend)
      nr++;

   OUT_PKT4(ring, REG_A6XX_RB_FS_OUTPUT_CNTL0, 2);
   OUT_RING(ring, COND(fs->writes_pos, A6XX_RB_FS_OUTPUT_CNTL0_FRAG_WRITES_Z) |
                     COND(fs->writes_smask && pfb->samples > 1,
                          A6XX_RB_FS_OUTPUT_CNTL0_FRAG_WRITES_SAMPMASK) |
                     COND(fs->writes_stencilref,
                          A6XX_RB_FS_OUTPUT_CNTL0_FRAG_WRITES_STENCILREF) |
                     COND(blend->use_dual_src_blend,
                          A6XX_RB_FS_OUTPUT_CNTL0_DUAL_COLOR_IN_ENABLE));
   OUT_RING(ring, A6XX_RB_FS_OUTPUT_CNTL1_MRT(nr));

   OUT_PKT4(ring, REG_A6XX_SP_FS_OUTPUT_CNTL1, 1);
   OUT_RING(ring, A6XX_SP_FS_OUTPUT_CNTL1_MRT(nr));

   unsigned mrt_components = 0;
   for (unsigned i = 0; i < pfb->nr_cbufs; i++) {
      if (!pfb->cbufs[i])
         continue;
      mrt_components |= 0xf << (i * 4);
   }

   /* dual source blending has an extra fs output in the 2nd slot */
   if (blend->use_dual_src_blend)
      mrt_components |= 0xf << 4;

   mrt_components &= prog->mrt_components;

   OUT_REG(ring, A6XX_SP_FS_RENDER_COMPONENTS(.dword = mrt_components));
   OUT_REG(ring, A6XX_RB_RENDER_COMPONENTS(.dword = mrt_components));

   return ring;
}

static struct fd_ringbuffer *
build_blend_color(struct fd6_emit *emit) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   struct pipe_blend_color *bcolor = &ctx->blend_color;
   struct fd_ringbuffer *ring = fd_submit_new_ringbuffer(
      ctx->batch->submit, 5 * 4, FD_RINGBUFFER_STREAMING);

   OUT_REG(ring, A6XX_RB_BLEND_RED_F32(bcolor->color[0]),
           A6XX_RB_BLEND_GREEN_F32(bcolor->color[1]),
           A6XX_RB_BLEND_BLUE_F32(bcolor->color[2]),
           A6XX_RB_BLEND_ALPHA_F32(bcolor->color[3]));

   return ring;
}

static struct fd_ringbuffer *
build_ibo(struct fd6_emit *emit) assert_dt
{
   struct fd_context *ctx = emit->ctx;

   if (emit->hs) {
      debug_assert(ir3_shader_nibo(emit->hs) == 0);
      debug_assert(ir3_shader_nibo(emit->ds) == 0);
   }
   if (emit->gs) {
      debug_assert(ir3_shader_nibo(emit->gs) == 0);
   }

   struct fd_ringbuffer *ibo_state =
      fd6_build_ibo_state(ctx, emit->fs, PIPE_SHADER_FRAGMENT);
   struct fd_ringbuffer *ring = fd_submit_new_ringbuffer(
      ctx->batch->submit, 0x100, FD_RINGBUFFER_STREAMING);

   OUT_PKT7(ring, CP_LOAD_STATE6, 3);
   OUT_RING(ring, CP_LOAD_STATE6_0_DST_OFF(0) |
                     CP_LOAD_STATE6_0_STATE_TYPE(ST6_SHADER) |
                     CP_LOAD_STATE6_0_STATE_SRC(SS6_INDIRECT) |
                     CP_LOAD_STATE6_0_STATE_BLOCK(SB6_IBO) |
                     CP_LOAD_STATE6_0_NUM_UNIT(ir3_shader_nibo(emit->fs)));
   OUT_RB(ring, ibo_state);

   OUT_PKT4(ring, REG_A6XX_SP_IBO, 2);
   OUT_RB(ring, ibo_state);

   /* TODO if we used CP_SET_DRAW_STATE for compute shaders, we could
    * de-duplicate this from program->config_stateobj
    */
   OUT_PKT4(ring, REG_A6XX_SP_IBO_COUNT, 1);
   OUT_RING(ring, ir3_shader_nibo(emit->fs));

   fd_ringbuffer_del(ibo_state);

   return ring;
}

static void
fd6_emit_streamout(struct fd_ringbuffer *ring, struct fd6_emit *emit) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   const struct fd6_program_state *prog = fd6_emit_get_prog(emit);
   struct ir3_stream_output_info *info = prog->stream_output;
   struct fd_streamout_stateobj *so = &ctx->streamout;

   emit->streamout_mask = 0;

   if (!info)
      return;

   for (unsigned i = 0; i < so->num_targets; i++) {
      struct fd_stream_output_target *target =
         fd_stream_output_target(so->targets[i]);

      if (!target)
         continue;

      target->stride = info->stride[i];

      OUT_PKT4(ring, REG_A6XX_VPC_SO_BUFFER_BASE(i), 3);
      /* VPC_SO[i].BUFFER_BASE_LO: */
      OUT_RELOC(ring, fd_resource(target->base.buffer)->bo, 0, 0, 0);
      OUT_RING(ring, target->base.buffer_size + target->base.buffer_offset);

      struct fd_bo *offset_bo = fd_resource(target->offset_buf)->bo;

      if (so->reset & (1 << i)) {
         assert(so->offsets[i] == 0);

         OUT_PKT7(ring, CP_MEM_WRITE, 3);
         OUT_RELOC(ring, offset_bo, 0, 0, 0);
         OUT_RING(ring, target->base.buffer_offset);

         OUT_PKT4(ring, REG_A6XX_VPC_SO_BUFFER_OFFSET(i), 1);
         OUT_RING(ring, target->base.buffer_offset);
      } else {
         OUT_PKT7(ring, CP_MEM_TO_REG, 3);
         OUT_RING(ring, CP_MEM_TO_REG_0_REG(REG_A6XX_VPC_SO_BUFFER_OFFSET(i)) |
                           CP_MEM_TO_REG_0_SHIFT_BY_2 | CP_MEM_TO_REG_0_UNK31 |
                           CP_MEM_TO_REG_0_CNT(0));
         OUT_RELOC(ring, offset_bo, 0, 0, 0);
      }

      // After a draw HW would write the new offset to offset_bo
      OUT_PKT4(ring, REG_A6XX_VPC_SO_FLUSH_BASE(i), 2);
      OUT_RELOC(ring, offset_bo, 0, 0, 0);

      so->reset &= ~(1 << i);

      emit->streamout_mask |= (1 << i);
   }

   if (emit->streamout_mask) {
      fd6_emit_add_group(emit, prog->streamout_stateobj, FD6_GROUP_SO,
                         ENABLE_ALL);
   } else if (ctx->last.streamout_mask != 0) {
      /* If we transition from a draw with streamout to one without, turn
       * off streamout.
       */
      fd6_emit_add_group(emit, fd6_context(ctx)->streamout_disable_stateobj,
                         FD6_GROUP_SO, ENABLE_ALL);
   }

   /* Make sure that any use of our TFB outputs (indirect draw source or shader
    * UBO reads) comes after the TFB output is written.  From the GL 4.6 core
    * spec:
    *
    *     "Buffers should not be bound or in use for both transform feedback and
    *      other purposes in the GL.  Specifically, if a buffer object is
    *      simultaneously bound to a transform feedback buffer binding point
    *      and elsewhere in the GL, any writes to or reads from the buffer
    *      generate undefined values."
    *
    * So we idle whenever SO buffers change.  Note that this function is called
    * on every draw with TFB enabled, so check the dirty flag for the buffers
    * themselves.
    */
   if (ctx->dirty & FD_DIRTY_STREAMOUT)
      fd_wfi(ctx->batch, ring);

   ctx->last.streamout_mask = emit->streamout_mask;
}

/**
 * Stuff that less frequently changes and isn't (yet) moved into stategroups
 */
static void
fd6_emit_non_ring(struct fd_ringbuffer *ring, struct fd6_emit *emit) assert_dt
{
   struct fd_context *ctx = emit->ctx;
   const enum fd_dirty_3d_state dirty = emit->dirty;

   if (dirty & FD_DIRTY_STENCIL_REF) {
      struct pipe_stencil_ref *sr = &ctx->stencil_ref;

      OUT_PKT4(ring, REG_A6XX_RB_STENCILREF, 1);
      OUT_RING(ring, A6XX_RB_STENCILREF_REF(sr->ref_value[0]) |
                        A6XX_RB_STENCILREF_BFREF(sr->ref_value[1]));
   }

   if (dirty & FD_DIRTY_VIEWPORT) {
      struct pipe_scissor_state *scissor = &ctx->viewport_scissor;

      OUT_REG(ring, A6XX_GRAS_CL_VPORT_XOFFSET(0, ctx->viewport.translate[0]),
              A6XX_GRAS_CL_VPORT_XSCALE(0, ctx->viewport.scale[0]),
              A6XX_GRAS_CL_VPORT_YOFFSET(0, ctx->viewport.translate[1]),
              A6XX_GRAS_CL_VPORT_YSCALE(0, ctx->viewport.scale[1]),
              A6XX_GRAS_CL_VPORT_ZOFFSET(0, ctx->viewport.translate[2]),
              A6XX_GRAS_CL_VPORT_ZSCALE(0, ctx->viewport.scale[2]));

      OUT_REG(
         ring,
         A6XX_GRAS_SC_VIEWPORT_SCISSOR_TL(0, .x = scissor->minx,
                                          .y = scissor->miny),
         A6XX_GRAS_SC_VIEWPORT_SCISSOR_BR(0, .x = MAX2(scissor->maxx, 1) - 1,
                                          .y = MAX2(scissor->maxy, 1) - 1));

      unsigned guardband_x = fd_calc_guardband(ctx->viewport.translate[0],
                                               ctx->viewport.scale[0], false);
      unsigned guardband_y = fd_calc_guardband(ctx->viewport.translate[1],
                                               ctx->viewport.scale[1], false);

      OUT_REG(ring, A6XX_GRAS_CL_GUARDBAND_CLIP_ADJ(.horz = guardband_x,
                                                    .vert = guardband_y));
   }

   /* The clamp ranges are only used when the rasterizer wants depth
    * clamping.
    */
   if ((dirty & (FD_DIRTY_VIEWPORT | FD_DIRTY_RASTERIZER)) &&
       fd_depth_clamp_enabled(ctx)) {
      float zmin, zmax;
      util_viewport_zmin_zmax(&ctx->viewport, ctx->rasterizer->clip_halfz,
                              &zmin, &zmax);

      OUT_REG(ring, A6XX_GRAS_CL_Z_CLAMP_MIN(0, zmin),
              A6XX_GRAS_CL_Z_CLAMP_MAX(0, zmax));

      OUT_REG(ring, A6XX_RB_Z_CLAMP_MIN(zmin), A6XX_RB_Z_CLAMP_MAX(zmax));
   }
}

void
fd6_emit_state(struct fd_ringbuffer *ring, struct fd6_emit *emit)
{
   struct fd_context *ctx = emit->ctx;
   struct pipe_framebuffer_state *pfb = &ctx->batch->framebuffer;
   const struct fd6_program_state *prog = fd6_emit_get_prog(emit);
   const struct ir3_shader_variant *vs = emit->vs;
   const struct ir3_shader_variant *hs = emit->hs;
   const struct ir3_shader_variant *ds = emit->ds;
   const struct ir3_shader_variant *gs = emit->gs;
   const struct ir3_shader_variant *fs = emit->fs;
   bool needs_border = false;

   emit_marker6(ring, 5);

   /* NOTE: we track fb_read differently than _BLEND_ENABLED since we
    * might decide to do sysmem in some cases when blend is enabled:
    */
   if (fs->fb_read)
      ctx->batch->gmem_reason |= FD_GMEM_FB_READ;

   u_foreach_bit (b, emit->dirty_groups) {
      enum fd6_state_id group = b;
      struct fd_ringbuffer *state = NULL;
      uint32_t enable_mask = ENABLE_ALL;

      switch (group) {
      case FD6_GROUP_VTXSTATE:
         state = fd6_vertex_stateobj(ctx->vtx.vtx)->stateobj;
         fd_ringbuffer_ref(state);
         break;
      case FD6_GROUP_VBO:
         state = build_vbo_state(emit);
         break;
      case FD6_GROUP_ZSA:
         state = fd6_zsa_state(
            ctx,
            util_format_is_pure_integer(pipe_surface_format(pfb->cbufs[0])),
            fd_depth_clamp_enabled(ctx));
         fd_ringbuffer_ref(state);
         break;
      case FD6_GROUP_LRZ:
         state = build_lrz(emit, false);
         if (!state)
            continue;
         enable_mask = ENABLE_DRAW;
         break;
      case FD6_GROUP_LRZ_BINNING:
         state = build_lrz(emit, true);
         if (!state)
            continue;
         enable_mask = CP_SET_DRAW_STATE__0_BINNING;
         break;
      case FD6_GROUP_SCISSOR:
         state = build_scissor(emit);
         break;
      case FD6_GROUP_PROG:
         fd6_emit_add_group(emit, prog->config_stateobj, FD6_GROUP_PROG_CONFIG,
                            ENABLE_ALL);
         fd6_emit_add_group(emit, prog->stateobj, FD6_GROUP_PROG, ENABLE_DRAW);
         fd6_emit_add_group(emit, prog->binning_stateobj,
                            FD6_GROUP_PROG_BINNING,
                            CP_SET_DRAW_STATE__0_BINNING);

         /* emit remaining streaming program state, ie. what depends on
          * other emit state, so cannot be pre-baked.
          */
         fd6_emit_take_group(emit, fd6_program_interp_state(emit),
                             FD6_GROUP_PROG_INTERP, ENABLE_DRAW);
         continue;
      case FD6_GROUP_RASTERIZER:
         state = fd6_rasterizer_state(ctx, emit->primitive_restart);
         fd_ringbuffer_ref(state);
         break;
      case FD6_GROUP_PROG_FB_RAST:
         state = build_prog_fb_rast(emit);
         break;
      case FD6_GROUP_BLEND:
         state = fd6_blend_variant(ctx->blend, pfb->samples, ctx->sample_mask)
                    ->stateobj;
         fd_ringbuffer_ref(state);
         break;
      case FD6_GROUP_BLEND_COLOR:
         state = build_blend_color(emit);
         break;
      case FD6_GROUP_IBO:
         state = build_ibo(emit);
         break;
      case FD6_GROUP_CONST:
         state = fd6_build_user_consts(emit);
         break;
      case FD6_GROUP_VS_DRIVER_PARAMS:
         state = fd6_build_vs_driver_params(emit);
         break;
      case FD6_GROUP_PRIMITIVE_PARAMS:
         state = fd6_build_tess_consts(emit);
         break;
      case FD6_GROUP_VS_TEX:
         needs_border |=
            fd6_emit_combined_textures(ring, emit, PIPE_SHADER_VERTEX, vs);
         continue;
      case FD6_GROUP_HS_TEX:
         if (hs) {
            needs_border |= fd6_emit_combined_textures(
               ring, emit, PIPE_SHADER_TESS_CTRL, hs);
         }
         continue;
      case FD6_GROUP_DS_TEX:
         if (ds) {
            needs_border |= fd6_emit_combined_textures(
               ring, emit, PIPE_SHADER_TESS_EVAL, ds);
         }
         continue;
      case FD6_GROUP_GS_TEX:
         if (gs) {
            needs_border |=
               fd6_emit_combined_textures(ring, emit, PIPE_SHADER_GEOMETRY, gs);
         }
         continue;
      case FD6_GROUP_FS_TEX:
         needs_border |=
            fd6_emit_combined_textures(ring, emit, PIPE_SHADER_FRAGMENT, fs);
         continue;
      case FD6_GROUP_SO:
         fd6_emit_streamout(ring, emit);
         continue;
      case FD6_GROUP_NON_GROUP:
         fd6_emit_non_ring(ring, emit);
         continue;
      default:
         unreachable("bad state group");
      }

      fd6_emit_take_group(emit, state, group, enable_mask);
   }

   if (needs_border)
      emit_border_color(ctx, ring);

   if (emit->num_groups > 0) {
      OUT_PKT7(ring, CP_SET_DRAW_STATE, 3 * emit->num_groups);
      for (unsigned i = 0; i < emit->num_groups; i++) {
         struct fd6_state_group *g = &emit->groups[i];
         unsigned n = g->stateobj ? fd_ringbuffer_size(g->stateobj) / 4 : 0;

         debug_assert((g->enable_mask & ~ENABLE_ALL) == 0);

         if (n == 0) {
            OUT_RING(ring, CP_SET_DRAW_STATE__0_COUNT(0) |
                              CP_SET_DRAW_STATE__0_DISABLE | g->enable_mask |
                              CP_SET_DRAW_STATE__0_GROUP_ID(g->group_id));
            OUT_RING(ring, 0x00000000);
            OUT_RING(ring, 0x00000000);
         } else {
            OUT_RING(ring, CP_SET_DRAW_STATE__0_COUNT(n) | g->enable_mask |
                              CP_SET_DRAW_STATE__0_GROUP_ID(g->group_id));
            OUT_RB(ring, g->stateobj);
         }

         if (g->stateobj)
            fd_ringbuffer_del(g->stateobj);
      }
      emit->num_groups = 0;
   }
}

void
fd6_emit_cs_state(struct fd_context *ctx, struct fd_ringbuffer *ring,
                  struct ir3_shader_variant *cp)
{
   enum fd_dirty_shader_state dirty = ctx->dirty_shader[PIPE_SHADER_COMPUTE];

   if (dirty & (FD_DIRTY_SHADER_TEX | FD_DIRTY_SHADER_PROG |
                FD_DIRTY_SHADER_IMAGE | FD_DIRTY_SHADER_SSBO)) {
      struct fd_texture_stateobj *tex = &ctx->tex[PIPE_SHADER_COMPUTE];
      unsigned bcolor_offset =
         fd6_border_color_offset(ctx, PIPE_SHADER_COMPUTE, tex);

      bool needs_border = fd6_emit_textures(ctx, ring, PIPE_SHADER_COMPUTE, tex,
                                            bcolor_offset, cp);

      if (needs_border)
         emit_border_color(ctx, ring);

      OUT_PKT4(ring, REG_A6XX_SP_VS_TEX_COUNT, 1);
      OUT_RING(ring, 0);

      OUT_PKT4(ring, REG_A6XX_SP_HS_TEX_COUNT, 1);
      OUT_RING(ring, 0);

      OUT_PKT4(ring, REG_A6XX_SP_DS_TEX_COUNT, 1);
      OUT_RING(ring, 0);

      OUT_PKT4(ring, REG_A6XX_SP_GS_TEX_COUNT, 1);
      OUT_RING(ring, 0);

      OUT_PKT4(ring, REG_A6XX_SP_FS_TEX_COUNT, 1);
      OUT_RING(ring, 0);
   }

   if (dirty & (FD_DIRTY_SHADER_SSBO | FD_DIRTY_SHADER_IMAGE)) {
      struct fd_ringbuffer *state =
         fd6_build_ibo_state(ctx, cp, PIPE_SHADER_COMPUTE);

      OUT_PKT7(ring, CP_LOAD_STATE6_FRAG, 3);
      OUT_RING(ring, CP_LOAD_STATE6_0_DST_OFF(0) |
                        CP_LOAD_STATE6_0_STATE_TYPE(ST6_IBO) |
                        CP_LOAD_STATE6_0_STATE_SRC(SS6_INDIRECT) |
                        CP_LOAD_STATE6_0_STATE_BLOCK(SB6_CS_SHADER) |
                        CP_LOAD_STATE6_0_NUM_UNIT(ir3_shader_nibo(cp)));
      OUT_RB(ring, state);

      OUT_PKT4(ring, REG_A6XX_SP_CS_IBO, 2);
      OUT_RB(ring, state);

      OUT_PKT4(ring, REG_A6XX_SP_CS_IBO_COUNT, 1);
      OUT_RING(ring, ir3_shader_nibo(cp));

      fd_ringbuffer_del(state);
   }
}

/* emit setup at begin of new cmdstream buffer (don't rely on previous
 * state, there could have been a context switch between ioctls):
 */
void
fd6_emit_restore(struct fd_batch *batch, struct fd_ringbuffer *ring)
{
   struct fd_screen *screen = batch->ctx->screen;

   if (!batch->nondraw) {
      trace_start_state_restore(&batch->trace, ring);
   }

   fd6_cache_inv(batch, ring);

   OUT_REG(ring,
           A6XX_HLSQ_INVALIDATE_CMD(.vs_state = true, .hs_state = true,
                                    .ds_state = true, .gs_state = true,
                                    .fs_state = true, .cs_state = true,
                                    .gfx_ibo = true, .cs_ibo = true,
                                    .gfx_shared_const = true,
                                    .cs_shared_const = true,
                                    .gfx_bindless = 0x1f, .cs_bindless = 0x1f));

   OUT_WFI5(ring);

   WRITE(REG_A6XX_RB_UNKNOWN_8E04, 0x0);
   WRITE(REG_A6XX_SP_FLOAT_CNTL, A6XX_SP_FLOAT_CNTL_F16_NO_INF);
   WRITE(REG_A6XX_SP_UNKNOWN_AE00, 0);
   WRITE(REG_A6XX_SP_PERFCTR_ENABLE, 0x3f);
   WRITE(REG_A6XX_TPL1_UNKNOWN_B605, 0x44);
   WRITE(REG_A6XX_TPL1_DBG_ECO_CNTL, screen->info->a6xx.magic.TPL1_DBG_ECO_CNTL);
   WRITE(REG_A6XX_HLSQ_UNKNOWN_BE00, 0x80);
   WRITE(REG_A6XX_HLSQ_UNKNOWN_BE01, 0);

   WRITE(REG_A6XX_VPC_UNKNOWN_9600, 0);
   WRITE(REG_A6XX_GRAS_DBG_ECO_CNTL, 0x880);
   WRITE(REG_A6XX_HLSQ_UNKNOWN_BE04, 0x80000);
   WRITE(REG_A6XX_SP_CHICKEN_BITS, 0x1430);
   WRITE(REG_A6XX_SP_IBO_COUNT, 0);
   WRITE(REG_A6XX_SP_UNKNOWN_B182, 0);
   WRITE(REG_A6XX_HLSQ_SHARED_CONSTS, 0);
   WRITE(REG_A6XX_UCHE_UNKNOWN_0E12, 0x3200000);
   WRITE(REG_A6XX_UCHE_CLIENT_PF, 4);
   WRITE(REG_A6XX_RB_UNKNOWN_8E01, 0x1);
   WRITE(REG_A6XX_SP_MODE_CONTROL,
         A6XX_SP_MODE_CONTROL_CONSTANT_DEMOTION_ENABLE | 4);
   WRITE(REG_A6XX_VFD_ADD_OFFSET, A6XX_VFD_ADD_OFFSET_VERTEX);
   WRITE(REG_A6XX_RB_UNKNOWN_8811, 0x00000010);
   WRITE(REG_A6XX_PC_MODE_CNTL, 0x1f);

   WRITE(REG_A6XX_GRAS_LRZ_PS_INPUT_CNTL, 0);
   WRITE(REG_A6XX_GRAS_SAMPLE_CNTL, 0);
   WRITE(REG_A6XX_GRAS_UNKNOWN_8110, 0x2);

   WRITE(REG_A6XX_RB_UNKNOWN_8818, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_8819, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_881A, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_881B, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_881C, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_881D, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_881E, 0);
   WRITE(REG_A6XX_RB_UNKNOWN_88F0, 0);

   WRITE(REG_A6XX_VPC_POINT_COORD_INVERT, A6XX_VPC_POINT_COORD_INVERT(0).value);
   WRITE(REG_A6XX_VPC_UNKNOWN_9300, 0);

   WRITE(REG_A6XX_VPC_SO_DISABLE, A6XX_VPC_SO_DISABLE(true).value);

   WRITE(REG_A6XX_PC_RASTER_CNTL, 0);

   WRITE(REG_A6XX_PC_MULTIVIEW_CNTL, 0);

   WRITE(REG_A6XX_SP_UNKNOWN_B183, 0);

   WRITE(REG_A6XX_GRAS_SU_CONSERVATIVE_RAS_CNTL, 0);
   WRITE(REG_A6XX_GRAS_VS_LAYER_CNTL, 0);
   WRITE(REG_A6XX_GRAS_SC_CNTL, A6XX_GRAS_SC_CNTL_CCUSINGLECACHELINESIZE(2));
   WRITE(REG_A6XX_GRAS_UNKNOWN_80AF, 0);
   WRITE(REG_A6XX_VPC_UNKNOWN_9210, 0);
   WRITE(REG_A6XX_VPC_UNKNOWN_9211, 0);
   WRITE(REG_A6XX_VPC_UNKNOWN_9602, 0);
   WRITE(REG_A6XX_PC_UNKNOWN_9E72, 0);
   WRITE(REG_A6XX_SP_TP_SAMPLE_CONFIG, 0);
   /* NOTE blob seems to (mostly?) use 0xb2 for SP_TP_MODE_CNTL
    * but this seems to kill texture gather offsets.
    */
   WRITE(REG_A6XX_SP_TP_MODE_CNTL, 0xa0 |
         A6XX_SP_TP_MODE_CNTL_ISAMMODE(ISAMMODE_GL));
   WRITE(REG_A6XX_RB_SAMPLE_CONFIG, 0);
   WRITE(REG_A6XX_GRAS_SAMPLE_CONFIG, 0);
   WRITE(REG_A6XX_RB_Z_BOUNDS_MIN, 0);
   WRITE(REG_A6XX_RB_Z_BOUNDS_MAX, 0);
   WRITE(REG_A6XX_HLSQ_CONTROL_5_REG, 0xfc);

   emit_marker6(ring, 7);

   OUT_PKT4(ring, REG_A6XX_VFD_MODE_CNTL, 1);
   OUT_RING(ring, 0x00000000); /* VFD_MODE_CNTL */

   WRITE(REG_A6XX_VFD_MULTIVIEW_CNTL, 0);

   OUT_PKT4(ring, REG_A6XX_PC_MODE_CNTL, 1);
   OUT_RING(ring, 0x0000001f); /* PC_MODE_CNTL */

   /* Clear any potential pending state groups to be safe: */
   OUT_PKT7(ring, CP_SET_DRAW_STATE, 3);
   OUT_RING(ring, CP_SET_DRAW_STATE__0_COUNT(0) |
                     CP_SET_DRAW_STATE__0_DISABLE_ALL_GROUPS |
                     CP_SET_DRAW_STATE__0_GROUP_ID(0));
   OUT_RING(ring, CP_SET_DRAW_STATE__1_ADDR_LO(0));
   OUT_RING(ring, CP_SET_DRAW_STATE__2_ADDR_HI(0));

   OUT_PKT4(ring, REG_A6XX_VPC_SO_STREAM_CNTL, 1);
   OUT_RING(ring, 0x00000000); /* VPC_SO_STREAM_CNTL */

   OUT_PKT4(ring, REG_A6XX_GRAS_LRZ_CNTL, 1);
   OUT_RING(ring, 0x00000000);

   OUT_PKT4(ring, REG_A6XX_RB_LRZ_CNTL, 1);
   OUT_RING(ring, 0x00000000);

   if (!batch->nondraw) {
      trace_end_state_restore(&batch->trace, ring);
   }
}

static void
fd6_mem_to_mem(struct fd_ringbuffer *ring, struct pipe_resource *dst,
               unsigned dst_off, struct pipe_resource *src, unsigned src_off,
               unsigned sizedwords)
{
   struct fd_bo *src_bo = fd_resource(src)->bo;
   struct fd_bo *dst_bo = fd_resource(dst)->bo;
   unsigned i;

   for (i = 0; i < sizedwords; i++) {
      OUT_PKT7(ring, CP_MEM_TO_MEM, 5);
      OUT_RING(ring, 0x00000000);
      OUT_RELOC(ring, dst_bo, dst_off, 0, 0);
      OUT_RELOC(ring, src_bo, src_off, 0, 0);

      dst_off += 4;
      src_off += 4;
   }
}

/* this is *almost* the same as fd6_cache_flush().. which I guess
 * could be re-worked to be something a bit more generic w/ param
 * indicating what needs to be flushed..  although that would mean
 * figuring out which events trigger what state to flush..
 */
static void
fd6_framebuffer_barrier(struct fd_context *ctx) assert_dt
{
   struct fd6_context *fd6_ctx = fd6_context(ctx);
   struct fd_batch *batch = fd_context_batch_locked(ctx);
   struct fd_ringbuffer *ring = batch->draw;
   unsigned seqno;

   fd_batch_needs_flush(batch);

   seqno = fd6_event_write(batch, ring, RB_DONE_TS, true);

   OUT_PKT7(ring, CP_WAIT_REG_MEM, 6);
   OUT_RING(ring, CP_WAIT_REG_MEM_0_FUNCTION(WRITE_EQ) |
                     CP_WAIT_REG_MEM_0_POLL_MEMORY);
   OUT_RELOC(ring, control_ptr(fd6_ctx, seqno));
   OUT_RING(ring, CP_WAIT_REG_MEM_3_REF(seqno));
   OUT_RING(ring, CP_WAIT_REG_MEM_4_MASK(~0));
   OUT_RING(ring, CP_WAIT_REG_MEM_5_DELAY_LOOP_CYCLES(16));

   fd6_event_write(batch, ring, PC_CCU_FLUSH_COLOR_TS, true);
   fd6_event_write(batch, ring, PC_CCU_FLUSH_DEPTH_TS, true);

   seqno = fd6_event_write(batch, ring, CACHE_FLUSH_TS, true);
   fd_wfi(batch, ring);

   fd6_event_write(batch, ring, 0x31, false);

   OUT_PKT7(ring, CP_WAIT_MEM_GTE, 4);
   OUT_RING(ring, CP_WAIT_MEM_GTE_0_RESERVED(0));
   OUT_RELOC(ring, control_ptr(fd6_ctx, seqno));
   OUT_RING(ring, CP_WAIT_MEM_GTE_3_REF(seqno));

   fd_batch_unlock_submit(batch);
   fd_batch_reference(&batch, NULL);
}

void
fd6_emit_init_screen(struct pipe_screen *pscreen)
{
   struct fd_screen *screen = fd_screen(pscreen);
   screen->emit_ib = fd6_emit_ib;
   screen->mem_to_mem = fd6_mem_to_mem;
}

void
fd6_emit_init(struct pipe_context *pctx) disable_thread_safety_analysis
{
   struct fd_context *ctx = fd_context(pctx);
   ctx->framebuffer_barrier = fd6_framebuffer_barrier;
}
