icd/intel/cmd_pipeline.c

/*
 * XGL
 *
 * Copyright (C) 2014 LunarG, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include "genhw/genhw.h"
#include "dset.h"
#include "img.h"
#include "mem.h"
#include "pipeline.h"
#include "state.h"
#include "view.h"
#include "cmd_priv.h"

enum {
    GEN6_WA_POST_SYNC_FLUSH     = 1 << 0,
    GEN6_WA_DS_FLUSH            = 1 << 1,
};

static void gen6_3DPRIMITIVE(struct intel_cmd *cmd,
                             int prim_type, bool indexed,
                             uint32_t vertex_count,
                             uint32_t vertex_start,
                             uint32_t instance_count,
                             uint32_t instance_start,
                             uint32_t vertex_base)
{
    const uint8_t cmd_len = 6;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 6);

    dw0 = GEN6_RENDER_CMD(3D, 3DPRIMITIVE) |
          prim_type << GEN6_3DPRIM_DW0_TYPE__SHIFT |
          (cmd_len - 2);

    if (indexed)
        dw0 |= GEN6_3DPRIM_DW0_ACCESS_RANDOM;

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, vertex_count);
    cmd_batch_write(cmd, vertex_start);
    cmd_batch_write(cmd, instance_count);
    cmd_batch_write(cmd, instance_start);
    cmd_batch_write(cmd, vertex_base);
}

static void gen7_3DPRIMITIVE(struct intel_cmd *cmd,
                             int prim_type, bool indexed,
                             uint32_t vertex_count,
                             uint32_t vertex_start,
                             uint32_t instance_count,
                             uint32_t instance_start,
                             uint32_t vertex_base)
{
    const uint8_t cmd_len = 7;
    uint32_t dw0, dw1;

    CMD_ASSERT(cmd, 7, 7.5);

    dw0 = GEN6_RENDER_CMD(3D, 3DPRIMITIVE) | (cmd_len - 2);
    dw1 = prim_type << GEN7_3DPRIM_DW1_TYPE__SHIFT;

    if (indexed)
        dw1 |= GEN7_3DPRIM_DW1_ACCESS_RANDOM;

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, dw1);
    cmd_batch_write(cmd, vertex_count);
    cmd_batch_write(cmd, vertex_start);
    cmd_batch_write(cmd, instance_count);
    cmd_batch_write(cmd, instance_start);
    cmd_batch_write(cmd, vertex_base);
}

static void gen6_PIPE_CONTROL(struct intel_cmd *cmd, uint32_t dw1,
                              struct intel_bo *bo, uint32_t bo_offset)
{
   const uint8_t cmd_len = 5;
   const uint32_t dw0 = GEN6_RENDER_CMD(3D, PIPE_CONTROL) |
                        (cmd_len - 2);

   CMD_ASSERT(cmd, 6, 7.5);

   assert(bo_offset % 8 == 0);

   if (dw1 & GEN6_PIPE_CONTROL_CS_STALL) {
      /*
       * From the Sandy Bridge PRM, volume 2 part 1, page 73:
       *
       *     "1 of the following must also be set (when CS stall is set):
       *
       *       * Depth Cache Flush Enable ([0] of DW1)
       *       * Stall at Pixel Scoreboard ([1] of DW1)
       *       * Depth Stall ([13] of DW1)
       *       * Post-Sync Operation ([13] of DW1)
       *       * Render Target Cache Flush Enable ([12] of DW1)
       *       * Notify Enable ([8] of DW1)"
       *
       * From the Ivy Bridge PRM, volume 2 part 1, page 61:
       *
       *     "One of the following must also be set (when CS stall is set):
       *
       *       * Render Target Cache Flush Enable ([12] of DW1)
       *       * Depth Cache Flush Enable ([0] of DW1)
       *       * Stall at Pixel Scoreboard ([1] of DW1)
       *       * Depth Stall ([13] of DW1)
       *       * Post-Sync Operation ([13] of DW1)"
       */
      uint32_t bit_test = GEN6_PIPE_CONTROL_RENDER_CACHE_FLUSH |
                          GEN6_PIPE_CONTROL_DEPTH_CACHE_FLUSH |
                          GEN6_PIPE_CONTROL_PIXEL_SCOREBOARD_STALL |
                          GEN6_PIPE_CONTROL_DEPTH_STALL;

      /* post-sync op */
      bit_test |= GEN6_PIPE_CONTROL_WRITE_IMM |
                  GEN6_PIPE_CONTROL_WRITE_PS_DEPTH_COUNT |
                  GEN6_PIPE_CONTROL_WRITE_TIMESTAMP;

      if (cmd_gen(cmd) == INTEL_GEN(6))
         bit_test |= GEN6_PIPE_CONTROL_NOTIFY_ENABLE;

      assert(dw1 & bit_test);
   }

   if (dw1 & GEN6_PIPE_CONTROL_DEPTH_STALL) {
      /*
       * From the Sandy Bridge PRM, volume 2 part 1, page 73:
       *
       *     "Following bits must be clear (when Depth Stall is set):
       *
       *       * Render Target Cache Flush Enable ([12] of DW1)
       *       * Depth Cache Flush Enable ([0] of DW1)"
       */
      assert(!(dw1 & (GEN6_PIPE_CONTROL_RENDER_CACHE_FLUSH |
                      GEN6_PIPE_CONTROL_DEPTH_CACHE_FLUSH)));
   }

   /*
    * From the Sandy Bridge PRM, volume 1 part 3, page 19:
    *
    *     "[DevSNB] PPGTT memory writes by MI_* (such as MI_STORE_DATA_IMM)
    *      and PIPE_CONTROL are not supported."
    *
    * The kernel will add the mapping automatically (when write domain is
    * INTEL_DOMAIN_INSTRUCTION).
    */
   if (cmd_gen(cmd) == INTEL_GEN(6) && bo)
      bo_offset |= GEN6_PIPE_CONTROL_DW2_USE_GGTT;

   cmd_batch_reserve_reloc(cmd, cmd_len, (bool) bo);
   cmd_batch_write(cmd, dw0);
   cmd_batch_write(cmd, dw1);
   if (bo) {
       cmd_batch_reloc(cmd, bo_offset, bo, INTEL_RELOC_GGTT |
                                           INTEL_RELOC_WRITE);
   } else {
       cmd_batch_write(cmd, 0);
   }
   cmd_batch_write(cmd, 0);
   cmd_batch_write(cmd, 0);
}

static bool gen6_can_primitive_restart(const struct intel_cmd *cmd)
{
    const struct intel_pipeline *p = cmd->bind.pipeline.graphics;
    bool supported;

    CMD_ASSERT(cmd, 6, 7.5);

    if (cmd_gen(cmd) >= INTEL_GEN(7.5))
        return (p->prim_type != GEN6_3DPRIM_RECTLIST);

    switch (p->prim_type) {
    case GEN6_3DPRIM_POINTLIST:
    case GEN6_3DPRIM_LINELIST:
    case GEN6_3DPRIM_LINESTRIP:
    case GEN6_3DPRIM_TRILIST:
    case GEN6_3DPRIM_TRISTRIP:
        supported = true;
        break;
    default:
        supported = false;
        break;
    }

    if (!supported)
        return false;

    switch (cmd->bind.index.type) {
    case XGL_INDEX_8:
        supported = (p->primitive_restart_index != 0xffu);
        break;
    case XGL_INDEX_16:
        supported = (p->primitive_restart_index != 0xffffu);
        break;
    case XGL_INDEX_32:
        supported = (p->primitive_restart_index != 0xffffffffu);
        break;
    default:
        supported = false;
        break;
    }

    return supported;
}

static void gen6_3DSTATE_INDEX_BUFFER(struct intel_cmd *cmd,
                                      const struct intel_mem *mem,
                                      XGL_GPU_SIZE offset,
                                      XGL_INDEX_TYPE type,
                                      bool enable_cut_index)
{
    const uint8_t cmd_len = 3;
    uint32_t dw0, end_offset;
    unsigned offset_align;

    CMD_ASSERT(cmd, 6, 7.5);

    dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_INDEX_BUFFER) | (cmd_len - 2);

    /* the bit is moved to 3DSTATE_VF */
    if (cmd_gen(cmd) >= INTEL_GEN(7.5))
        assert(!enable_cut_index);
    if (enable_cut_index)
        dw0 |= GEN6_IB_DW0_CUT_INDEX_ENABLE;

    switch (type) {
    case XGL_INDEX_8:
        dw0 |= GEN6_IB_DW0_FORMAT_BYTE;
        offset_align = 1;
        break;
    case XGL_INDEX_16:
        dw0 |= GEN6_IB_DW0_FORMAT_WORD;
        offset_align = 2;
        break;
    case XGL_INDEX_32:
        dw0 |= GEN6_IB_DW0_FORMAT_DWORD;
        offset_align = 4;
        break;
    default:
        cmd->result = XGL_ERROR_INVALID_VALUE;
        return;
        break;
    }

    if (offset % offset_align) {
        cmd->result = XGL_ERROR_INVALID_VALUE;
        return;
    }

    /* aligned and inclusive */
    end_offset = mem->size - (mem->size % offset_align) - 1;

    cmd_batch_reserve_reloc(cmd, cmd_len, 2);
    cmd_batch_write(cmd, dw0);
    cmd_batch_reloc(cmd, offset, mem->bo, 0);
    cmd_batch_reloc(cmd, end_offset, mem->bo, 0);
}

static inline void
gen75_3DSTATE_VF(struct intel_cmd *cmd,
                 bool enable_cut_index,
                 uint32_t cut_index)
{
    const uint8_t cmd_len = 2;
    uint32_t dw0;

    CMD_ASSERT(cmd, 7.5, 7.5);

    dw0 = GEN75_RENDER_CMD(3D, 3DSTATE_VF) | (cmd_len - 2);
    if (enable_cut_index)
        dw0 |=  GEN75_VF_DW0_CUT_INDEX_ENABLE;

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, cut_index);
}

static void gen6_3DSTATE_DRAWING_RECTANGLE(struct intel_cmd *cmd,
                                           XGL_UINT width, XGL_UINT height)
{
    const uint8_t cmd_len = 4;
    const uint32_t dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_DRAWING_RECTANGLE) |
                         (cmd_len - 2);

    CMD_ASSERT(cmd, 6, 7.5);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    if (width && height) {
        cmd_batch_write(cmd, 0);
        cmd_batch_write(cmd, (height - 1) << 16 |
                             (width - 1));
    } else {
        cmd_batch_write(cmd, 1);
        cmd_batch_write(cmd, 0);
    }
    cmd_batch_write(cmd, 0);
}

static void gen6_3DSTATE_DEPTH_BUFFER(struct intel_cmd *cmd,
                                      const struct intel_ds_view *view)
{
    const uint8_t cmd_len = 7;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 7.5);

    dw0 = (cmd_gen(cmd) >= INTEL_GEN(7)) ?
        GEN7_RENDER_CMD(3D, 3DSTATE_DEPTH_BUFFER) :
        GEN6_RENDER_CMD(3D, 3DSTATE_DEPTH_BUFFER);
    dw0 |= (cmd_len - 2);

    cmd_batch_reserve_reloc(cmd, cmd_len, (bool) view->img);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, view->cmd[0]);
    if (view->img) {
        cmd_batch_reloc(cmd, view->cmd[1], view->img->obj.mem->bo,
                        INTEL_RELOC_WRITE);
    } else {
        cmd_batch_write(cmd, 0);
    }
    cmd_batch_write(cmd, view->cmd[2]);
    cmd_batch_write(cmd, view->cmd[3]);
    cmd_batch_write(cmd, view->cmd[4]);
    cmd_batch_write(cmd, view->cmd[5]);
}

static void gen6_3DSTATE_STENCIL_BUFFER(struct intel_cmd *cmd,
                                        const struct intel_ds_view *view)
{
    const uint8_t cmd_len = 3;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 7.5);

    dw0 = (cmd_gen(cmd) >= INTEL_GEN(7)) ?
        GEN7_RENDER_CMD(3D, 3DSTATE_STENCIL_BUFFER) :
        GEN6_RENDER_CMD(3D, 3DSTATE_STENCIL_BUFFER);
    dw0 |= (cmd_len - 2);

    cmd_batch_reserve_reloc(cmd, cmd_len, (bool) view->img);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, view->cmd[6]);
    if (view->img) {
        cmd_batch_reloc(cmd, view->cmd[7], view->img->obj.mem->bo,
                        INTEL_RELOC_WRITE);
    } else {
        cmd_batch_write(cmd, 0);
    }
}

static void gen6_3DSTATE_HIER_DEPTH_BUFFER(struct intel_cmd *cmd,
                                           const struct intel_ds_view *view)
{
    const uint8_t cmd_len = 3;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 7.5);

    dw0 = (cmd_gen(cmd) >= INTEL_GEN(7)) ?
        GEN7_RENDER_CMD(3D, 3DSTATE_HIER_DEPTH_BUFFER) :
        GEN6_RENDER_CMD(3D, 3DSTATE_HIER_DEPTH_BUFFER);
    dw0 |= (cmd_len - 2);

    cmd_batch_reserve_reloc(cmd, cmd_len, (bool) view->img);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, view->cmd[8]);
    if (view->img) {
        cmd_batch_reloc(cmd, view->cmd[9], view->img->obj.mem->bo,
                        INTEL_RELOC_WRITE);
    } else {
        cmd_batch_write(cmd, 0);
    }
}

static void gen6_3DSTATE_CLEAR_PARAMS(struct intel_cmd *cmd,
                                      uint32_t clear_val)
{
    const uint8_t cmd_len = 2;
    const uint32_t dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_CLEAR_PARAMS) |
                         GEN6_CLEAR_PARAMS_DW0_VALID |
                         (cmd_len - 2);

    CMD_ASSERT(cmd, 6, 6);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, clear_val);
}

static void gen7_3DSTATE_CLEAR_PARAMS(struct intel_cmd *cmd,
                                      uint32_t clear_val)
{
    const uint8_t cmd_len = 3;
    const uint32_t dw0 = GEN7_RENDER_CMD(3D, 3DSTATE_CLEAR_PARAMS) |
                         (cmd_len - 2);

    CMD_ASSERT(cmd, 7, 7.5);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, clear_val);
    cmd_batch_write(cmd, 1);
}

static void gen6_3DSTATE_CC_STATE_POINTERS(struct intel_cmd *cmd,
                                           XGL_UINT blend_pos,
                                           XGL_UINT ds_pos,
                                           XGL_UINT cc_pos)
{
    const uint8_t cmd_len = 4;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 6);

    dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_CC_STATE_POINTERS) |
          (cmd_len - 2);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, (blend_pos << 2) | 1);
    cmd_batch_write(cmd, (ds_pos << 2) | 1);
    cmd_batch_write(cmd, (cc_pos << 2) | 1);
}

static void gen6_3DSTATE_VIEWPORT_STATE_POINTERS(struct intel_cmd *cmd,
                                                 XGL_UINT clip_pos,
                                                 XGL_UINT sf_pos,
                                                 XGL_UINT cc_pos)
{
    const uint8_t cmd_len = 4;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 6);

    dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_VIEWPORT_STATE_POINTERS) |
          GEN6_PTR_VP_DW0_CLIP_CHANGED |
          GEN6_PTR_VP_DW0_SF_CHANGED |
          GEN6_PTR_VP_DW0_CC_CHANGED |
          (cmd_len - 2);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, clip_pos << 2);
    cmd_batch_write(cmd, sf_pos << 2);
    cmd_batch_write(cmd, cc_pos << 2);
}

static void gen6_3DSTATE_SCISSOR_STATE_POINTERS(struct intel_cmd *cmd,
                                                XGL_UINT scissor_pos)
{
    const uint8_t cmd_len = 2;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 6);

    dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_SCISSOR_STATE_POINTERS) |
          (cmd_len - 2);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, scissor_pos << 2);
}

static void gen6_3DSTATE_BINDING_TABLE_POINTERS(struct intel_cmd *cmd,
                                                XGL_UINT vs_pos,
                                                XGL_UINT gs_pos,
                                                XGL_UINT ps_pos)
{
    const uint8_t cmd_len = 4;
    uint32_t dw0;

    CMD_ASSERT(cmd, 6, 6);

    dw0 = GEN6_RENDER_CMD(3D, 3DSTATE_BINDING_TABLE_POINTERS) |
          GEN6_PTR_BINDING_TABLE_DW0_VS_CHANGED |
          GEN6_PTR_BINDING_TABLE_DW0_GS_CHANGED |
          GEN6_PTR_BINDING_TABLE_DW0_PS_CHANGED |
          (cmd_len - 2);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, vs_pos << 2);
    cmd_batch_write(cmd, gs_pos << 2);
    cmd_batch_write(cmd, ps_pos << 2);
}

static void gen7_3dstate_pointer(struct intel_cmd *cmd,
                                 int subop, XGL_UINT pos)
{
    const uint8_t cmd_len = 2;
    const uint32_t dw0 = GEN6_RENDER_TYPE_RENDER |
                         GEN6_RENDER_SUBTYPE_3D |
                         subop | (cmd_len - 2);

    cmd_batch_reserve(cmd, cmd_len);
    cmd_batch_write(cmd, dw0);
    cmd_batch_write(cmd, pos << 2);
}

static XGL_UINT gen6_BLEND_STATE(struct intel_cmd *cmd,
                                 const struct intel_blend_state *state)
{
    const uint8_t cmd_align = GEN6_ALIGNMENT_BLEND_STATE;
    const uint8_t cmd_len = XGL_MAX_COLOR_ATTACHMENTS * 2;

    CMD_ASSERT(cmd, 6, 7.5);
    STATIC_ASSERT(ARRAY_SIZE(state->cmd) >= cmd_len);

    return cmd_state_copy(cmd, state->cmd, cmd_len, cmd_align);
}

static XGL_UINT gen6_DEPTH_STENCIL_STATE(struct intel_cmd *cmd,
                                         const struct intel_ds_state *state)
{
    const uint8_t cmd_align = GEN6_ALIGNMENT_DEPTH_STENCIL_STATE;
    const uint8_t cmd_len = 3;

    CMD_ASSERT(cmd, 6, 7.5);
    STATIC_ASSERT(ARRAY_SIZE(state->cmd) >= cmd_len);

    return cmd_state_copy(cmd, state->cmd, cmd_len, cmd_align);
}

static XGL_UINT gen6_COLOR_CALC_STATE(struct intel_cmd *cmd,
                                      uint32_t stencil_ref,
                                      const uint32_t blend_color[4])
{
    const uint8_t cmd_align = GEN6_ALIGNMENT_COLOR_CALC_STATE;
    const uint8_t cmd_len = 6;
    XGL_UINT pos;
    uint32_t *dw;

    CMD_ASSERT(cmd, 6, 7.5);

    dw = cmd_state_reserve(cmd, cmd_len, cmd_align, &pos);
    dw[0] = stencil_ref;
    dw[1] = 0;
    dw[2] = blend_color[0];
    dw[3] = blend_color[1];
    dw[4] = blend_color[2];
    dw[5] = blend_color[3];
    cmd_state_advance(cmd, cmd_len);

    return pos;
}

static void gen6_wa_post_sync_flush(struct intel_cmd *cmd)
{
    if (!cmd->bind.draw_count)
        return;

    if (cmd->bind.wa_flags & GEN6_WA_POST_SYNC_FLUSH)
        return;

    CMD_ASSERT(cmd, 6, 7.5);

    cmd->bind.wa_flags |= GEN6_WA_POST_SYNC_FLUSH;

   /*
    * From the Sandy Bridge PRM, volume 2 part 1, page 60:
    *
    *     "Pipe-control with CS-stall bit set must be sent BEFORE the
    *      pipe-control with a post-sync op and no write-cache flushes."
    *
    * The workaround below necessitates this workaround.
    */
    gen6_PIPE_CONTROL(cmd,
            GEN6_PIPE_CONTROL_CS_STALL |
            GEN6_PIPE_CONTROL_PIXEL_SCOREBOARD_STALL,
            NULL, 0);

   /*
    * From the Sandy Bridge PRM, volume 2 part 1, page 60:
    *
    *     "Before any depth stall flush (including those produced by
    *      non-pipelined state commands), software needs to first send a
    *      PIPE_CONTROL with no bits set except Post-Sync Operation != 0."
    *
    *     "Before a PIPE_CONTROL with Write Cache Flush Enable =1, a
    *      PIPE_CONTROL with any non-zero post-sync-op is required."
    */
   gen6_PIPE_CONTROL(cmd, GEN6_PIPE_CONTROL_WRITE_IMM, cmd->scratch_bo, 0);
}

static void gen6_wa_ds_flush(struct intel_cmd *cmd)
{
    if (!cmd->bind.draw_count)
        return;

    if (cmd->bind.wa_flags & GEN6_WA_DS_FLUSH)
        return;

    CMD_ASSERT(cmd, 6, 7.5);

    cmd->bind.wa_flags |= GEN6_WA_DS_FLUSH;

    gen6_wa_post_sync_flush(cmd);

    gen6_PIPE_CONTROL(cmd, GEN6_PIPE_CONTROL_DEPTH_STALL, NULL, 0);
    gen6_PIPE_CONTROL(cmd, GEN6_PIPE_CONTROL_DEPTH_CACHE_FLUSH, NULL, 0);
    gen6_PIPE_CONTROL(cmd, GEN6_PIPE_CONTROL_DEPTH_STALL, NULL, 0);
}

static void gen6_cc_states(struct intel_cmd *cmd)
{
    const struct intel_blend_state *blend = cmd->bind.state.blend;
    const struct intel_ds_state *ds = cmd->bind.state.ds;
    XGL_UINT blend_pos, ds_pos, cc_pos;
    uint32_t stencil_ref;
    uint32_t blend_color[4];

    CMD_ASSERT(cmd, 6, 6);

    if (blend) {
        blend_pos = gen6_BLEND_STATE(cmd, blend);
        memcpy(blend_color, blend->cmd_blend_color, sizeof(blend_color));
    } else {
        blend_pos = 0;
        memset(blend_color, 0, sizeof(blend_color));
    }

    if (ds) {
        ds_pos = gen6_DEPTH_STENCIL_STATE(cmd, ds);
        stencil_ref = ds->cmd_stencil_ref;
    } else {
        ds_pos = 0;
        stencil_ref = 0;
    }

    cc_pos = gen6_COLOR_CALC_STATE(cmd, stencil_ref, blend_color);

    gen6_3DSTATE_CC_STATE_POINTERS(cmd, blend_pos, ds_pos, cc_pos);
}

static void gen6_viewport_states(struct intel_cmd *cmd)
{
    const struct intel_viewport_state *viewport = cmd->bind.state.viewport;
    XGL_UINT pos;

    if (!viewport)
        return;

    pos = cmd_state_copy(cmd, viewport->cmd, viewport->cmd_len,
            viewport->cmd_align);

    gen6_3DSTATE_VIEWPORT_STATE_POINTERS(cmd,
            pos + viewport->cmd_clip_offset,
            pos,
            pos + viewport->cmd_cc_offset);

    pos = (viewport->scissor_enable) ?
        pos + viewport->cmd_scissor_rect_offset : 0;

    gen6_3DSTATE_SCISSOR_STATE_POINTERS(cmd, pos);
}

static void gen7_cc_states(struct intel_cmd *cmd)
{
    const struct intel_blend_state *blend = cmd->bind.state.blend;
    const struct intel_ds_state *ds = cmd->bind.state.ds;
    uint32_t stencil_ref;
    uint32_t blend_color[4];
    XGL_UINT pos;

    CMD_ASSERT(cmd, 7, 7.5);

    if (!blend && !ds)
        return;

    if (blend) {
        pos = gen6_BLEND_STATE(cmd, blend);
        gen7_3dstate_pointer(cmd,
                GEN7_RENDER_OPCODE_3DSTATE_BLEND_STATE_POINTERS, pos);

        memcpy(blend_color, blend->cmd_blend_color, sizeof(blend_color));
    } else {
        memset(blend_color, 0, sizeof(blend_color));
    }

    if (ds) {
        pos = gen6_DEPTH_STENCIL_STATE(cmd, ds);
        gen7_3dstate_pointer(cmd,
                GEN7_RENDER_OPCODE_3DSTATE_DEPTH_STENCIL_STATE_POINTERS, pos);
    } else {
        stencil_ref = 0;
    }

    pos = gen6_COLOR_CALC_STATE(cmd, stencil_ref, blend_color);
    gen7_3dstate_pointer(cmd,
            GEN6_RENDER_OPCODE_3DSTATE_CC_STATE_POINTERS, pos);
}

static void gen7_viewport_states(struct intel_cmd *cmd)
{
    const struct intel_viewport_state *viewport = cmd->bind.state.viewport;
    XGL_UINT pos;

    if (!viewport)
        return;

    pos = cmd_state_copy(cmd, viewport->cmd, viewport->cmd_len,
            viewport->cmd_align);

    gen7_3dstate_pointer(cmd,
            GEN7_RENDER_OPCODE_3DSTATE_VIEWPORT_STATE_POINTERS_SF_CLIP, pos);
    gen7_3dstate_pointer(cmd,
            GEN7_RENDER_OPCODE_3DSTATE_VIEWPORT_STATE_POINTERS_CC,
            pos + viewport->cmd_cc_offset);
    if (viewport->scissor_enable) {
        gen7_3dstate_pointer(cmd,
                GEN6_RENDER_OPCODE_3DSTATE_SCISSOR_STATE_POINTERS,
                pos + viewport->cmd_scissor_rect_offset);
    }
}

static void emit_ps_resources(struct intel_cmd *cmd,
                              const struct intel_rmap *rmap)
{
    const XGL_UINT surface_count = rmap->rt_count +
        rmap->resource_count + rmap->uav_count;
    uint32_t binding_table[256];
    XGL_UINT pos, i;

    assert(surface_count <= ARRAY_SIZE(binding_table));

    for (i = 0; i < surface_count; i++) {
        const struct intel_rmap_slot *slot = &rmap->slots[i];
        uint32_t *dw;

        switch (slot->path_len) {
        case 0:
            pos = 0;
            break;
        case INTEL_RMAP_SLOT_RT:
            {
                const struct intel_rt_view *view = cmd->bind.att.rt[i];

                dw = cmd_state_reserve_reloc(cmd, view->cmd_len, 1,
                        GEN6_ALIGNMENT_SURFACE_STATE, &pos);

                memcpy(dw, view->cmd, sizeof(uint32_t) * view->cmd_len);
                cmd_state_reloc(cmd, 1, view->cmd[1], view->img->obj.mem->bo,
                        INTEL_RELOC_WRITE);
                cmd_state_advance(cmd, view->cmd_len);
            }
            break;
        case INTEL_RMAP_SLOT_DYN:
            {
                const struct intel_mem_view *view =
                    &cmd->bind.dyn_view.graphics;

                dw = cmd_state_reserve_reloc(cmd, view->cmd_len, 1,
                        GEN6_ALIGNMENT_SURFACE_STATE, &pos);

                memcpy(dw, view->cmd, sizeof(uint32_t) * view->cmd_len);
                cmd_state_reloc(cmd, 1, view->cmd[1], view->mem->bo,
                        INTEL_RELOC_WRITE);
                cmd_state_advance(cmd, view->cmd_len);
            }
            break;
        case 1:
        default:
            /* TODO */
            assert(!"no dset support");
            break;
        }

        binding_table[i] = pos << 2;
    }

    pos = cmd_state_copy(cmd, binding_table, surface_count,
            GEN6_ALIGNMENT_BINDING_TABLE_STATE);

    if (cmd_gen(cmd) >= INTEL_GEN(7)) {
        gen7_3dstate_pointer(cmd,
                GEN7_RENDER_OPCODE_3DSTATE_BINDING_TABLE_POINTERS_PS, pos);
    } else {
        gen6_3DSTATE_BINDING_TABLE_POINTERS(cmd, 0, 0, pos);
    }
}

static void emit_bounded_states(struct intel_cmd *cmd)
{
    const struct intel_msaa_state *msaa = cmd->bind.state.msaa;

    /* TODO more states */

    if (cmd_gen(cmd) >= INTEL_GEN(7)) {
        gen7_cc_states(cmd);
        gen7_viewport_states(cmd);
    } else {
        gen6_cc_states(cmd);
        gen6_viewport_states(cmd);
    }

    emit_ps_resources(cmd, cmd->bind.pipeline.graphics->fs_rmap);

    /* 3DSTATE_MULTISAMPLE and 3DSTATE_SAMPLE_MASK */
    gen6_wa_post_sync_flush(cmd);
    cmd_batch_reserve(cmd, msaa->cmd_len);
    cmd_batch_write_n(cmd, msaa->cmd, msaa->cmd_len);
}

static void cmd_bind_graphics_pipeline(struct intel_cmd *cmd,
                                       const struct intel_pipeline *pipeline)
{
    cmd->bind.pipeline.graphics = pipeline;
}

static void cmd_bind_compute_pipeline(struct intel_cmd *cmd,
                                      const struct intel_pipeline *pipeline)
{
    cmd->bind.pipeline.compute = pipeline;
}

static void cmd_bind_graphics_delta(struct intel_cmd *cmd,
                                    const struct intel_pipeline_delta *delta)
{
    cmd->bind.pipeline.graphics_delta = delta;
}

static void cmd_bind_compute_delta(struct intel_cmd *cmd,
                                   const struct intel_pipeline_delta *delta)
{
    cmd->bind.pipeline.compute_delta = delta;
}

static void cmd_bind_graphics_dset(struct intel_cmd *cmd,
                                   const struct intel_dset *dset,
                                   XGL_UINT slot_offset)
{
    cmd->bind.dset.graphics = dset;
    cmd->bind.dset.graphics_offset = slot_offset;
}

static void cmd_bind_compute_dset(struct intel_cmd *cmd,
                                  const struct intel_dset *dset,
                                  XGL_UINT slot_offset)
{
    cmd->bind.dset.compute = dset;
    cmd->bind.dset.compute_offset = slot_offset;
}

static void cmd_bind_graphics_dyn_view(struct intel_cmd *cmd,
                                       const XGL_MEMORY_VIEW_ATTACH_INFO *info)
{
    intel_mem_view_init(&cmd->bind.dyn_view.graphics, cmd->dev, info);
}

static void cmd_bind_compute_dyn_view(struct intel_cmd *cmd,
                                      const XGL_MEMORY_VIEW_ATTACH_INFO *info)
{
    intel_mem_view_init(&cmd->bind.dyn_view.compute, cmd->dev, info);
}

static void cmd_bind_index_data(struct intel_cmd *cmd,
                                const struct intel_mem *mem,
                                XGL_GPU_SIZE offset, XGL_INDEX_TYPE type)
{
    if (cmd_gen(cmd) >= INTEL_GEN(7.5)) {
        gen6_3DSTATE_INDEX_BUFFER(cmd, mem, offset, type, false);
    } else {
        cmd->bind.index.mem = mem;
        cmd->bind.index.offset = offset;
        cmd->bind.index.type = type;
    }
}

static void cmd_bind_rt(struct intel_cmd *cmd,
                        const XGL_COLOR_ATTACHMENT_BIND_INFO *attachments,
                        XGL_UINT count)
{
    XGL_UINT width = 0, height = 0;
    XGL_UINT i;

    for (i = 0; i < count; i++) {
        const XGL_COLOR_ATTACHMENT_BIND_INFO *att = &attachments[i];
        const struct intel_rt_view *rt = intel_rt_view(att->view);
        const struct intel_layout *layout = &rt->img->layout;

        if (i == 0) {
            width = layout->width0;
            height = layout->height0;
        } else {
            if (width > layout->width0)
                width = layout->width0;
            if (height > layout->height0)
                height = layout->height0;
        }

        cmd->bind.att.rt[i] = rt;
    }

    cmd->bind.att.rt_count = count;

    gen6_wa_post_sync_flush(cmd);
    gen6_3DSTATE_DRAWING_RECTANGLE(cmd, width, height);
}

static void cmd_bind_ds(struct intel_cmd *cmd,
                        const XGL_DEPTH_STENCIL_BIND_INFO *info)
{
    const struct intel_ds_view *ds;

    if (info) {
        cmd->bind.att.ds = intel_ds_view(info->view);
        ds = cmd->bind.att.ds;
    } else {
        /* all zeros */
        static const struct intel_ds_view null_ds;
        ds = &null_ds;
    }

    gen6_wa_ds_flush(cmd);
    gen6_3DSTATE_DEPTH_BUFFER(cmd, ds);
    gen6_3DSTATE_STENCIL_BUFFER(cmd, ds);
    gen6_3DSTATE_HIER_DEPTH_BUFFER(cmd, ds);

    if (cmd_gen(cmd) >= INTEL_GEN(7))
        gen7_3DSTATE_CLEAR_PARAMS(cmd, 0);
    else
        gen6_3DSTATE_CLEAR_PARAMS(cmd, 0);
}

static void cmd_bind_viewport_state(struct intel_cmd *cmd,
                                    const struct intel_viewport_state *state)
{
    cmd->bind.state.viewport = state;
}

static void cmd_bind_raster_state(struct intel_cmd *cmd,
                                  const struct intel_raster_state *state)
{
    cmd->bind.state.raster = state;
}

static void cmd_bind_ds_state(struct intel_cmd *cmd,
                              const struct intel_ds_state *state)
{
    cmd->bind.state.ds = state;
}

static void cmd_bind_blend_state(struct intel_cmd *cmd,
                                 const struct intel_blend_state *state)
{
    cmd->bind.state.blend = state;
}

static void cmd_bind_msaa_state(struct intel_cmd *cmd,
                                const struct intel_msaa_state *state)
{
    cmd->bind.state.msaa = state;
}

static void cmd_draw(struct intel_cmd *cmd,
                     XGL_UINT vertex_start,
                     XGL_UINT vertex_count,
                     XGL_UINT instance_start,
                     XGL_UINT instance_count,
                     bool indexed,
                     XGL_UINT vertex_base)
{
    const struct intel_pipeline *p = cmd->bind.pipeline.graphics;

    emit_bounded_states(cmd);

    if (indexed) {
        if (p->primitive_restart && !gen6_can_primitive_restart(cmd))
            cmd->result = XGL_ERROR_UNKNOWN;

        if (cmd_gen(cmd) >= INTEL_GEN(7.5)) {
            gen75_3DSTATE_VF(cmd, p->primitive_restart,
                    p->primitive_restart_index);
        } else {
            gen6_3DSTATE_INDEX_BUFFER(cmd, cmd->bind.index.mem,
                    cmd->bind.index.offset, cmd->bind.index.type,
                    p->primitive_restart);
        }
    } else {
        assert(!vertex_base);
    }

    if (cmd_gen(cmd) >= INTEL_GEN(7)) {
        gen7_3DPRIMITIVE(cmd, p->prim_type, indexed, vertex_count,
                vertex_start, instance_count, instance_start, vertex_base);
    } else {
        gen6_3DPRIMITIVE(cmd, p->prim_type, indexed, vertex_count,
                vertex_start, instance_count, instance_start, vertex_base);
    }

    cmd->bind.draw_count++;
    /* need to re-emit all workarounds */
    cmd->bind.wa_flags = 0;
}

XGL_VOID XGLAPI intelCmdBindPipeline(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_PIPELINE_BIND_POINT                     pipelineBindPoint,
    XGL_PIPELINE                                pipeline)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    switch (pipelineBindPoint) {
    case XGL_PIPELINE_BIND_POINT_COMPUTE:
        cmd_bind_compute_pipeline(cmd, intel_pipeline(pipeline));
        break;
    case XGL_PIPELINE_BIND_POINT_GRAPHICS:
        cmd_bind_graphics_pipeline(cmd, intel_pipeline(pipeline));
        break;
    default:
        cmd->result = XGL_ERROR_INVALID_VALUE;
        break;
    }
}

XGL_VOID XGLAPI intelCmdBindPipelineDelta(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_PIPELINE_BIND_POINT                     pipelineBindPoint,
    XGL_PIPELINE_DELTA                          delta)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    switch (pipelineBindPoint) {
    case XGL_PIPELINE_BIND_POINT_COMPUTE:
        cmd_bind_compute_delta(cmd, delta);
        break;
    case XGL_PIPELINE_BIND_POINT_GRAPHICS:
        cmd_bind_graphics_delta(cmd, delta);
        break;
    default:
        cmd->result = XGL_ERROR_INVALID_VALUE;
        break;
    }
}

XGL_VOID XGLAPI intelCmdBindStateObject(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_STATE_BIND_POINT                        stateBindPoint,
    XGL_STATE_OBJECT                            state)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    switch (stateBindPoint) {
    case XGL_STATE_BIND_VIEWPORT:
        cmd_bind_viewport_state(cmd,
                intel_viewport_state((XGL_VIEWPORT_STATE_OBJECT) state));
        break;
    case XGL_STATE_BIND_RASTER:
        cmd_bind_raster_state(cmd,
                intel_raster_state((XGL_RASTER_STATE_OBJECT) state));
        break;
    case XGL_STATE_BIND_DEPTH_STENCIL:
        cmd_bind_ds_state(cmd,
                intel_ds_state((XGL_DEPTH_STENCIL_STATE_OBJECT) state));
        break;
    case XGL_STATE_BIND_COLOR_BLEND:
        cmd_bind_blend_state(cmd,
                intel_blend_state((XGL_COLOR_BLEND_STATE_OBJECT) state));
        break;
    case XGL_STATE_BIND_MSAA:
        cmd_bind_msaa_state(cmd,
                intel_msaa_state((XGL_MSAA_STATE_OBJECT) state));
        break;
    default:
        cmd->result = XGL_ERROR_INVALID_VALUE;
        break;
    }
}

XGL_VOID XGLAPI intelCmdBindDescriptorSet(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_PIPELINE_BIND_POINT                     pipelineBindPoint,
    XGL_UINT                                    index,
    XGL_DESCRIPTOR_SET                          descriptorSet,
    XGL_UINT                                    slotOffset)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);
    struct intel_dset *dset = intel_dset(descriptorSet);

    assert(!index);

    switch (pipelineBindPoint) {
    case XGL_PIPELINE_BIND_POINT_COMPUTE:
        cmd_bind_compute_dset(cmd, dset, slotOffset);
        break;
    case XGL_PIPELINE_BIND_POINT_GRAPHICS:
        cmd_bind_graphics_dset(cmd, dset, slotOffset);
        break;
    default:
        cmd->result = XGL_ERROR_INVALID_VALUE;
        break;
    }
}

XGL_VOID XGLAPI intelCmdBindDynamicMemoryView(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_PIPELINE_BIND_POINT                     pipelineBindPoint,
    const XGL_MEMORY_VIEW_ATTACH_INFO*          pMemView)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    switch (pipelineBindPoint) {
    case XGL_PIPELINE_BIND_POINT_COMPUTE:
        cmd_bind_compute_dyn_view(cmd, pMemView);
        break;
    case XGL_PIPELINE_BIND_POINT_GRAPHICS:
        cmd_bind_graphics_dyn_view(cmd, pMemView);
        break;
    default:
        cmd->result = XGL_ERROR_INVALID_VALUE;
        break;
    }
}

XGL_VOID XGLAPI intelCmdBindIndexData(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_GPU_MEMORY                              mem_,
    XGL_GPU_SIZE                                offset,
    XGL_INDEX_TYPE                              indexType)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);
    struct intel_mem *mem = intel_mem(mem_);

    cmd_bind_index_data(cmd, mem, offset, indexType);
}

XGL_VOID XGLAPI intelCmdBindAttachments(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_UINT                                    colorAttachmentCount,
    const XGL_COLOR_ATTACHMENT_BIND_INFO*       pColorAttachments,
    const XGL_DEPTH_STENCIL_BIND_INFO*          pDepthStencilAttachment)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd_bind_rt(cmd, pColorAttachments, colorAttachmentCount);
    cmd_bind_ds(cmd, pDepthStencilAttachment);
}

XGL_VOID XGLAPI intelCmdDraw(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_UINT                                    firstVertex,
    XGL_UINT                                    vertexCount,
    XGL_UINT                                    firstInstance,
    XGL_UINT                                    instanceCount)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd_draw(cmd, firstVertex, vertexCount,
            firstInstance, instanceCount, false, 0);
}

XGL_VOID XGLAPI intelCmdDrawIndexed(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_UINT                                    firstIndex,
    XGL_UINT                                    indexCount,
    XGL_INT                                     vertexOffset,
    XGL_UINT                                    firstInstance,
    XGL_UINT                                    instanceCount)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd_draw(cmd, firstIndex, indexCount,
            firstInstance, instanceCount, true, vertexOffset);
}

XGL_VOID XGLAPI intelCmdDrawIndirect(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_GPU_MEMORY                              mem,
    XGL_GPU_SIZE                                offset,
    XGL_UINT32                                  count,
    XGL_UINT32                                  stride)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd->result = XGL_ERROR_UNKNOWN;
}

XGL_VOID XGLAPI intelCmdDrawIndexedIndirect(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_GPU_MEMORY                              mem,
    XGL_GPU_SIZE                                offset,
    XGL_UINT32                                  count,
    XGL_UINT32                                  stride)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd->result = XGL_ERROR_UNKNOWN;
}

XGL_VOID XGLAPI intelCmdDispatch(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_UINT                                    x,
    XGL_UINT                                    y,
    XGL_UINT                                    z)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd->result = XGL_ERROR_UNKNOWN;
}

XGL_VOID XGLAPI intelCmdDispatchIndirect(
    XGL_CMD_BUFFER                              cmdBuffer,
    XGL_GPU_MEMORY                              mem,
    XGL_GPU_SIZE                                offset)
{
    struct intel_cmd *cmd = intel_cmd(cmdBuffer);

    cmd->result = XGL_ERROR_UNKNOWN;
}