On 29.11.2017 10:29, Nicolai Hähnle wrote:
On 28.11.2017 22:38, Marek Olšák wrote:
From: Marek Olšák <[email protected]>

The commit message should mention that this also contains some preliminary work for MSAA DCC.

Unless you plan to land this after the series, that is? I was comparing to the code in master...



Cheers,
Nicolai



---
  src/gallium/drivers/radeon/r600_pipe_common.h |  13 +-
  src/gallium/drivers/radeon/r600_texture.c     | 547 +------------------
  src/gallium/drivers/radeonsi/Makefile.sources |   1 +
  src/gallium/drivers/radeonsi/meson.build      |   1 +
  src/gallium/drivers/radeonsi/si_blit.c        | 170 +-----
  src/gallium/drivers/radeonsi/si_clear.c       | 725 ++++++++++++++++++++++++++
  src/gallium/drivers/radeonsi/si_cp_dma.c      |   6 +-
  src/gallium/drivers/radeonsi/si_pipe.c        |   1 +
  src/gallium/drivers/radeonsi/si_pipe.h        |  19 +
  9 files changed, 764 insertions(+), 719 deletions(-)
  create mode 100644 src/gallium/drivers/radeonsi/si_clear.c

diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h b/src/gallium/drivers/radeon/r600_pipe_common.h
index 2ece409..36df0c4 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.h
+++ b/src/gallium/drivers/radeon/r600_pipe_common.h
@@ -728,20 +728,23 @@ bool si_prepare_for_dma_blit(struct r600_common_context *rctx,
                   struct r600_texture *rdst,
                   unsigned dst_level, unsigned dstx,
                   unsigned dsty, unsigned dstz,
                   struct r600_texture *rsrc,
                   unsigned src_level,
                   const struct pipe_box *src_box);
  void si_texture_get_fmask_info(struct r600_common_screen *rscreen,
                     struct r600_texture *rtex,
                     unsigned nr_samples,
                     struct r600_fmask_info *out);
+void si_texture_get_cmask_info(struct r600_common_screen *rscreen,
+                   struct r600_texture *rtex,
+                   struct r600_cmask_info *out);
  bool si_init_flushed_depth_texture(struct pipe_context *ctx,
                     struct pipe_resource *texture,
                     struct r600_texture **staging);
  void si_print_texture_info(struct r600_common_screen *rscreen,
                 struct r600_texture *rtex, struct u_log_context *log);
  struct pipe_resource *si_texture_create(struct pipe_screen *screen,
                      const struct pipe_resource *templ);
  bool vi_dcc_formats_compatible(enum pipe_format format1,
                     enum pipe_format format2);
  bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,
@@ -750,34 +753,28 @@ bool vi_dcc_formats_are_incompatible(struct pipe_resource *tex,   void vi_disable_dcc_if_incompatible_format(struct r600_common_context *rctx,
                         struct pipe_resource *tex,
                         unsigned level,
                         enum pipe_format view_format);
  struct pipe_surface *si_create_surface_custom(struct pipe_context *pipe,
                            struct pipe_resource *texture,
                            const struct pipe_surface *templ,
                            unsigned width0, unsigned height0,
                            unsigned width, unsigned height);
  unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap);
+void vi_separate_dcc_try_enable(struct r600_common_context *rctx,
+                struct r600_texture *tex);
  void vi_separate_dcc_start_query(struct pipe_context *ctx,
                   struct r600_texture *tex);
  void vi_separate_dcc_stop_query(struct pipe_context *ctx,
                  struct r600_texture *tex);
  void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
                           struct r600_texture *tex);
-void vi_dcc_clear_level(struct r600_common_context *rctx,
-            struct r600_texture *rtex,
-            unsigned level, unsigned clear_value);
-void si_do_fast_color_clear(struct r600_common_context *rctx,
-                struct pipe_framebuffer_state *fb,
-                struct r600_atom *fb_state,
-                unsigned *buffers, ubyte *dirty_cbufs,
-                const union pipe_color_union *color);
  bool si_texture_disable_dcc(struct r600_common_context *rctx,
                  struct r600_texture *rtex);
  void si_init_screen_texture_functions(struct r600_common_screen *rscreen);   void si_init_context_texture_functions(struct r600_common_context *rctx);
  /* Inline helpers. */
  static inline struct r600_resource *r600_resource(struct pipe_resource *r)
  {
diff --git a/src/gallium/drivers/radeon/r600_texture.c b/src/gallium/drivers/radeon/r600_texture.c
index e3658b4..46962eb 100644
--- a/src/gallium/drivers/radeon/r600_texture.c
+++ b/src/gallium/drivers/radeon/r600_texture.c
@@ -770,23 +770,23 @@ void si_texture_get_fmask_info(struct r600_common_screen *rscreen,   static void r600_texture_allocate_fmask(struct r600_common_screen *rscreen,
                      struct r600_texture *rtex)
  {
      si_texture_get_fmask_info(rscreen, rtex,
                      rtex->resource.b.b.nr_samples, &rtex->fmask);
      rtex->fmask.offset = align64(rtex->size, rtex->fmask.alignment);
      rtex->size = rtex->fmask.offset + rtex->fmask.size;
  }
-static void si_texture_get_cmask_info(struct r600_common_screen *rscreen,
-                      struct r600_texture *rtex,
-                      struct r600_cmask_info *out)
+void si_texture_get_cmask_info(struct r600_common_screen *rscreen,
+                   struct r600_texture *rtex,
+                   struct r600_cmask_info *out)
  {
      unsigned pipe_interleave_bytes = rscreen->info.pipe_interleave_bytes;
      unsigned num_pipes = rscreen->info.num_tile_pipes;
      unsigned cl_width, cl_height;
      if (rscreen->chip_class >= GFX9) {
          out->alignment = rtex->surface.u.gfx9.cmask_alignment;
          out->size = rtex->surface.u.gfx9.cmask_size;
          return;
      }
@@ -835,51 +835,20 @@ static void r600_texture_allocate_cmask(struct r600_common_screen *rscreen,
                      struct r600_texture *rtex)
  {
      si_texture_get_cmask_info(rscreen, rtex, &rtex->cmask);
      rtex->cmask.offset = align64(rtex->size, rtex->cmask.alignment);
      rtex->size = rtex->cmask.offset + rtex->cmask.size;
      rtex->cb_color_info |= S_028C70_FAST_CLEAR(1);
  }
-static void r600_texture_alloc_cmask_separate(struct r600_common_screen *rscreen,
-                          struct r600_texture *rtex)
-{
-    if (rtex->cmask_buffer)
-                return;
-
-    assert(rtex->cmask.size == 0);
-
-    si_texture_get_cmask_info(rscreen, rtex, &rtex->cmask);
-    if (!rtex->cmask.size)
-        return;
-
-    rtex->cmask_buffer = (struct r600_resource *)
-        si_aligned_buffer_create(&rscreen->b,
-                       R600_RESOURCE_FLAG_UNMAPPABLE,
-                       PIPE_USAGE_DEFAULT,
-                       rtex->cmask.size,
-                       rtex->cmask.alignment);
-    if (rtex->cmask_buffer == NULL) {
-        rtex->cmask.size = 0;
-        return;
-    }
-
-    /* update colorbuffer state bits */
-    rtex->cmask.base_address_reg = rtex->cmask_buffer->gpu_address >> 8;
-
-    rtex->cb_color_info |= S_028C70_FAST_CLEAR(1);
-
-    p_atomic_inc(&rscreen->compressed_colortex_counter);
-}
-
  static void r600_texture_get_htile_size(struct r600_common_screen *rscreen,
                      struct r600_texture *rtex)
  {
      unsigned cl_width, cl_height, width, height;
      unsigned slice_elements, slice_bytes, pipe_interleave_bytes, base_align;
      unsigned num_pipes = rscreen->info.num_tile_pipes;
      assert(rscreen->chip_class <= VI);
      rtex->surface.htile_size = 0;
@@ -1966,85 +1935,20 @@ static struct pipe_surface *r600_create_surface(struct pipe_context *pipe,
                        width, height);
  }
  static void r600_surface_destroy(struct pipe_context *pipe,
                   struct pipe_surface *surface)
  {
      pipe_resource_reference(&surface->texture, NULL);
      FREE(surface);
  }
-static void r600_clear_texture(struct pipe_context *pipe,
-                   struct pipe_resource *tex,
-                   unsigned level,
-                   const struct pipe_box *box,
-                   const void *data)
-{
-    struct pipe_screen *screen = pipe->screen;
-    struct r600_texture *rtex = (struct r600_texture*)tex;
-    struct pipe_surface tmpl = {{0}};
-    struct pipe_surface *sf;
-    const struct util_format_description *desc =
-        util_format_description(tex->format);
-
-    tmpl.format = tex->format;
-    tmpl.u.tex.first_layer = box->z;
-    tmpl.u.tex.last_layer = box->z + box->depth - 1;
-    tmpl.u.tex.level = level;
-    sf = pipe->create_surface(pipe, tex, &tmpl);
-    if (!sf)
-        return;
-
-    if (rtex->is_depth) {
-        unsigned clear;
-        float depth;
-        uint8_t stencil = 0;
-
-        /* Depth is always present. */
-        clear = PIPE_CLEAR_DEPTH;
-        desc->unpack_z_float(&depth, 0, data, 0, 1, 1);
-
-        if (rtex->surface.has_stencil) {
-            clear |= PIPE_CLEAR_STENCIL;
-            desc->unpack_s_8uint(&stencil, 0, data, 0, 1, 1);
-        }
-
-        pipe->clear_depth_stencil(pipe, sf, clear, depth, stencil,
-                      box->x, box->y,
-                      box->width, box->height, false);
-    } else {
-        union pipe_color_union color;
-
-        /* pipe_color_union requires the full vec4 representation. */
-        if (util_format_is_pure_uint(tex->format))
-            desc->unpack_rgba_uint(color.ui, 0, data, 0, 1, 1);
-        else if (util_format_is_pure_sint(tex->format))
-            desc->unpack_rgba_sint(color.i, 0, data, 0, 1, 1);
-        else
-            desc->unpack_rgba_float(color.f, 0, data, 0, 1, 1);
-
-        if (screen->is_format_supported(screen, tex->format,
-                        tex->target, 0,
-                        PIPE_BIND_RENDER_TARGET)) {
-            pipe->clear_render_target(pipe, sf, &color,
-                          box->x, box->y,
-                          box->width, box->height, false);
-        } else {
-            /* Software fallback - just for R9G9B9E5_FLOAT */
-            util_clear_render_target(pipe, sf, &color,
-                         box->x, box->y,
-                         box->width, box->height);
-        }
-    }
-    pipe_surface_reference(&sf, NULL);
-}
-
  unsigned si_translate_colorswap(enum pipe_format format, bool do_endian_swap)
  {
      const struct util_format_description *desc = util_format_description(format);   #define HAS_SWIZZLE(chan,swz) (desc->swizzle[chan] == PIPE_SWIZZLE_##swz)
      if (format == PIPE_FORMAT_R11G11B10_FLOAT) /* isn't plain */
          return V_028C70_SWAP_STD;
      if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
@@ -2214,22 +2118,22 @@ void vi_separate_dcc_stop_query(struct pipe_context *ctx,
  }
  static bool vi_should_enable_separate_dcc(struct r600_texture *tex)
  {
      /* The minimum number of fullscreen draws per frame that is required
       * to enable DCC. */
      return tex->ps_draw_ratio + tex->num_slow_clears >= 5;
  }
  /* Called by fast clear. */
-static void vi_separate_dcc_try_enable(struct r600_common_context *rctx,
-                       struct r600_texture *tex)
+void vi_separate_dcc_try_enable(struct r600_common_context *rctx,
+                struct r600_texture *tex)
  {
      /* The intent is to use this with shared displayable back buffers,
       * but it's not strictly limited only to them.
       */
      if (!tex->resource.b.is_shared ||
          !(tex->resource.external_usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH) ||
          tex->resource.b.b.target != PIPE_TEXTURE_2D ||
          tex->resource.b.b.last_level > 0 ||
          !tex->surface.dcc_size)
          return;
@@ -2329,460 +2233,20 @@ void vi_separate_dcc_process_and_reset_stats(struct pipe_context *ctx,
          assert(!tex->last_dcc_separate_buffer);
          tex->last_dcc_separate_buffer = tex->dcc_separate_buffer;
          tex->dcc_separate_buffer = NULL;
          tex->dcc_offset = 0;
          /* no need to flag anything since this is called after
           * decompression that re-sets framebuffer state
           */
      }
  }
-/* FAST COLOR CLEAR */
-
-static void evergreen_set_clear_color(struct r600_texture *rtex,
-                      enum pipe_format surface_format,
-                      const union pipe_color_union *color)
-{
-    union util_color uc;
-
-    memset(&uc, 0, sizeof(uc));
-
-    if (rtex->surface.bpe == 16) {
-        /* DCC fast clear only:
-         *   CLEAR_WORD0 = R = G = B
-         *   CLEAR_WORD1 = A
-         */
-        assert(color->ui[0] == color->ui[1] &&
-               color->ui[0] == color->ui[2]);
-        uc.ui[0] = color->ui[0];
-        uc.ui[1] = color->ui[3];
-    } else if (util_format_is_pure_uint(surface_format)) {
-        util_format_write_4ui(surface_format, color->ui, 0, &uc, 0, 0, 0, 1, 1);
-    } else if (util_format_is_pure_sint(surface_format)) {
-        util_format_write_4i(surface_format, color->i, 0, &uc, 0, 0, 0, 1, 1);
-    } else {
-        util_pack_color(color->f, surface_format, &uc);
-    }
-
-    memcpy(rtex->color_clear_value, &uc, 2 * sizeof(uint32_t));
-}
-
-static bool vi_get_fast_clear_parameters(enum pipe_format surface_format,
-                     const union pipe_color_union *color,
-                     uint32_t* reset_value,
-                     bool* clear_words_needed)
-{
-    bool values[4] = {};
-    int i;
-    bool main_value = false;
-    bool extra_value = false;
-    int extra_channel;
-
-    /* This is needed to get the correct DCC clear value for luminance formats. -     * 1) Get the linear format (because the next step can't handle L8_SRGB).
-     * 2) Convert luminance to red. (the real hw format for luminance)
-     */
-    surface_format = util_format_linear(surface_format);
-    surface_format = util_format_luminance_to_red(surface_format);
-
-    const struct util_format_description *desc = util_format_description(surface_format);
-
-    if (desc->block.bits == 128 &&
-        (color->ui[0] != color->ui[1] ||
-         color->ui[0] != color->ui[2]))
-        return false;
-
-    *clear_words_needed = true;
-    *reset_value = 0x20202020U;
-
-    /* If we want to clear without needing a fast clear eliminate step, we
-     * can set each channel to 0 or 1 (or 0/max for integer formats). We
-     * have two sets of flags, one for the last or first channel(extra) and
-     * one for the other channels(main).
-     */
-
-    if (surface_format == PIPE_FORMAT_R11G11B10_FLOAT ||
-        surface_format == PIPE_FORMAT_B5G6R5_UNORM ||
-        surface_format == PIPE_FORMAT_B5G6R5_SRGB ||
-        util_format_is_alpha(surface_format)) {
-        extra_channel = -1;
-    } else if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
-        if(si_translate_colorswap(surface_format, false) <= 1)
-            extra_channel = desc->nr_channels - 1;
-        else
-            extra_channel = 0;
-    } else
-        return true;
-
-    for (i = 0; i < 4; ++i) {
-        int index = desc->swizzle[i] - PIPE_SWIZZLE_X;
-
-        if (desc->swizzle[i] < PIPE_SWIZZLE_X ||
-            desc->swizzle[i] > PIPE_SWIZZLE_W)
-            continue;
-
-        if (desc->channel[i].pure_integer &&
-            desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
-            /* Use the maximum value for clamping the clear color. */
-            int max = u_bit_consecutive(0, desc->channel[i].size - 1);
-
-            values[i] = color->i[i] != 0;
-            if (color->i[i] != 0 && MIN2(color->i[i], max) != max)
-                return true;
-        } else if (desc->channel[i].pure_integer &&
-               desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) {
-            /* Use the maximum value for clamping the clear color. */
-            unsigned max = u_bit_consecutive(0, desc->channel[i].size);
-
-            values[i] = color->ui[i] != 0U;
-            if (color->ui[i] != 0U && MIN2(color->ui[i], max) != max)
-                return true;
-        } else {
-            values[i] = color->f[i] != 0.0F;
-            if (color->f[i] != 0.0F && color->f[i] != 1.0F)
-                return true;
-        }
-
-        if (index == extra_channel)
-            extra_value = values[i];
-        else
-            main_value = values[i];
-    }
-
-    for (int i = 0; i < 4; ++i)
-        if (values[i] != main_value &&
-            desc->swizzle[i] - PIPE_SWIZZLE_X != extra_channel &&
-            desc->swizzle[i] >= PIPE_SWIZZLE_X &&
-            desc->swizzle[i] <= PIPE_SWIZZLE_W)
-            return true;
-
-    *clear_words_needed = false;
-    if (main_value)
-        *reset_value |= 0x80808080U;
-
-    if (extra_value)
-        *reset_value |= 0x40404040U;
-    return true;
-}
-
-void vi_dcc_clear_level(struct r600_common_context *rctx,
-            struct r600_texture *rtex,
-            unsigned level, unsigned clear_value)
-{
-    struct pipe_resource *dcc_buffer;
-    uint64_t dcc_offset, clear_size;
-
-    assert(vi_dcc_enabled(rtex, level));
-
-    if (rtex->dcc_separate_buffer) {
-        dcc_buffer = &rtex->dcc_separate_buffer->b.b;
-        dcc_offset = 0;
-    } else {
-        dcc_buffer = &rtex->resource.b.b;
-        dcc_offset = rtex->dcc_offset;
-    }
-
-    if (rctx->chip_class >= GFX9) {
-        /* Mipmap level clears aren't implemented. */
-        assert(rtex->resource.b.b.last_level == 0);
-        /* MSAA needs a different clear size. */
-        assert(rtex->resource.b.b.nr_samples <= 1);
-        clear_size = rtex->surface.dcc_size;
-    } else {
-        unsigned num_layers = util_max_layer(&rtex->resource.b.b, level) + 1;
-
-        /* If this is 0, fast clear isn't possible. (can occur with MSAA) */
-        assert(rtex->surface.u.legacy.level[level].dcc_fast_clear_size);
-        /* Layered MSAA DCC fast clears need to clear dcc_fast_clear_size
-         * bytes for each layer. This is not currently implemented, and
-         * therefore MSAA DCC isn't even enabled with multiple layers.
-         */
-        assert(rtex->resource.b.b.nr_samples <= 1 || num_layers == 1);
-
-        dcc_offset += rtex->surface.u.legacy.level[level].dcc_offset;
-        clear_size = rtex->surface.u.legacy.level[level].dcc_fast_clear_size *
-                 num_layers;
-    }
-
-    rctx->clear_buffer(&rctx->b, dcc_buffer, dcc_offset, clear_size,
-               clear_value, R600_COHERENCY_CB_META);
-}
-
-/* Set the same micro tile mode as the destination of the last MSAA resolve. - * This allows hitting the MSAA resolve fast path, which requires that both
- * src and dst micro tile modes match.
- */
-static void si_set_optimal_micro_tile_mode(struct r600_common_screen *rscreen,
-                       struct r600_texture *rtex)
-{
-    if (rtex->resource.b.is_shared ||
-        rtex->resource.b.b.nr_samples <= 1 ||
-        rtex->surface.micro_tile_mode == rtex->last_msaa_resolve_target_micro_mode)
-        return;
-
-    assert(rscreen->chip_class >= GFX9 ||
-           rtex->surface.u.legacy.level[0].mode == RADEON_SURF_MODE_2D);
-    assert(rtex->resource.b.b.last_level == 0);
-
-    if (rscreen->chip_class >= GFX9) {
-        /* 4K or larger tiles only. 0 is linear. 1-3 are 256B tiles. */
-        assert(rtex->surface.u.gfx9.surf.swizzle_mode >= 4);
-
-        /* If you do swizzle_mode % 4, you'll get:
-         *   0 = Depth
-         *   1 = Standard,
-         *   2 = Displayable
-         *   3 = Rotated
-         *
-         * Depth-sample order isn't allowed:
-         */
-        assert(rtex->surface.u.gfx9.surf.swizzle_mode % 4 != 0);
-
-        switch (rtex->last_msaa_resolve_target_micro_mode) {
-        case RADEON_MICRO_MODE_DISPLAY:
-            rtex->surface.u.gfx9.surf.swizzle_mode &= ~0x3;
-            rtex->surface.u.gfx9.surf.swizzle_mode += 2; /* D */
-            break;
-        case RADEON_MICRO_MODE_THIN:
-            rtex->surface.u.gfx9.surf.swizzle_mode &= ~0x3;
-            rtex->surface.u.gfx9.surf.swizzle_mode += 1; /* S */
-            break;
-        case RADEON_MICRO_MODE_ROTATED:
-            rtex->surface.u.gfx9.surf.swizzle_mode &= ~0x3;
-            rtex->surface.u.gfx9.surf.swizzle_mode += 3; /* R */
-            break;
-        default: /* depth */
-            assert(!"unexpected micro mode");
-            return;
-        }
-    } else if (rscreen->chip_class >= CIK) {
-        /* These magic numbers were copied from addrlib. It doesn't use
-         * any definitions for them either. They are all 2D_TILED_THIN1
-         * modes with different bpp and micro tile mode.
-         */
-        switch (rtex->last_msaa_resolve_target_micro_mode) {
-        case RADEON_MICRO_MODE_DISPLAY:
-            rtex->surface.u.legacy.tiling_index[0] = 10;
-            break;
-        case RADEON_MICRO_MODE_THIN:
-            rtex->surface.u.legacy.tiling_index[0] = 14;
-            break;
-        case RADEON_MICRO_MODE_ROTATED:
-            rtex->surface.u.legacy.tiling_index[0] = 28;
-            break;
-        default: /* depth, thick */
-            assert(!"unexpected micro mode");
-            return;
-        }
-    } else { /* SI */
-        switch (rtex->last_msaa_resolve_target_micro_mode) {
-        case RADEON_MICRO_MODE_DISPLAY:
-            switch (rtex->surface.bpe) {
-            case 1:
-                            rtex->surface.u.legacy.tiling_index[0] = 10;
-                            break;
-            case 2:
-                            rtex->surface.u.legacy.tiling_index[0] = 11;
-                            break;
-            default: /* 4, 8 */
-                            rtex->surface.u.legacy.tiling_index[0] = 12;
-                            break;
-            }
-            break;
-        case RADEON_MICRO_MODE_THIN:
-            switch (rtex->surface.bpe) {
-            case 1:
- rtex->surface.u.legacy.tiling_index[0] = 14;
-                                break;
-            case 2:
- rtex->surface.u.legacy.tiling_index[0] = 15;
-                                break;
-            case 4:
- rtex->surface.u.legacy.tiling_index[0] = 16;
-                                break;
-            default: /* 8, 16 */
- rtex->surface.u.legacy.tiling_index[0] = 17;
-                                break;
-            }
-            break;
-        default: /* depth, thick */
-            assert(!"unexpected micro mode");
-            return;
-        }
-    }
-
-    rtex->surface.micro_tile_mode = rtex->last_msaa_resolve_target_micro_mode;
-
-    p_atomic_inc(&rscreen->dirty_tex_counter);
-}
-
-void si_do_fast_color_clear(struct r600_common_context *rctx,
-                   struct pipe_framebuffer_state *fb,
-                   struct r600_atom *fb_state,
-                   unsigned *buffers, ubyte *dirty_cbufs,
-                   const union pipe_color_union *color)
-{
-    int i;
-
-    /* This function is broken in BE, so just disable this path for now */
-#ifdef PIPE_ARCH_BIG_ENDIAN
-    return;
-#endif
-
-    if (rctx->render_cond)
-        return;
-
-    for (i = 0; i < fb->nr_cbufs; i++) {
-        struct r600_texture *tex;
-        unsigned clear_bit = PIPE_CLEAR_COLOR0 << i;
-        unsigned level = fb->cbufs[i]->u.tex.level;
-
-        if (!fb->cbufs[i])
-            continue;
-
-        /* if this colorbuffer is not being cleared */
-        if (!(*buffers & clear_bit))
-            continue;
-
-        tex = (struct r600_texture *)fb->cbufs[i]->texture;
-
-        /* the clear is allowed if all layers are bound */
-        if (fb->cbufs[i]->u.tex.first_layer != 0 ||
-            fb->cbufs[i]->u.tex.last_layer != util_max_layer(&tex->resource.b.b, 0)) {
-            continue;
-        }
-
-        /* cannot clear mipmapped textures */
-        if (fb->cbufs[i]->texture->last_level != 0) {
-            continue;
-        }
-
-        /* only supported on tiled surfaces */
-        if (tex->surface.is_linear) {
-            continue;
-        }
-
-        /* shared textures can't use fast clear without an explicit flush,
-         * because there is no way to communicate the clear color among
-         * all clients
-         */
-        if (tex->resource.b.is_shared &&
-            !(tex->resource.external_usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH))
-            continue;
-
-        /* fast color clear with 1D tiling doesn't work on old kernels and CIK */
-        if (rctx->chip_class == CIK &&
-            tex->surface.u.legacy.level[0].mode == RADEON_SURF_MODE_1D &&
-            rctx->screen->info.drm_major == 2 &&
-            rctx->screen->info.drm_minor < 38) {
-            continue;
-        }
-
-        /* Fast clear is the most appropriate place to enable DCC for
-         * displayable surfaces.
-         */
-        if (rctx->chip_class >= VI &&
-            !(rctx->screen->debug_flags & DBG(NO_DCC_FB))) {
-            vi_separate_dcc_try_enable(rctx, tex);
-
-            /* RB+ isn't supported with a CMASK clear only on Stoney,
-             * so all clears are considered to be hypothetically slow
-             * clears, which is weighed when determining whether to
-             * enable separate DCC.
-             */
-            if (tex->dcc_gather_statistics &&
-                rctx->family == CHIP_STONEY)
-                tex->num_slow_clears++;
-        }
-
-        /* Try to clear DCC first, otherwise try CMASK. */
-        if (vi_dcc_enabled(tex, 0)) {
-            uint32_t reset_value;
-            bool clear_words_needed, cleared_cmask = false;
-
-            if (rctx->screen->debug_flags & DBG(NO_DCC_CLEAR))
-                continue;
-
-            /* This can only occur with MSAA. */
-            if (rctx->chip_class == VI &&
-                !tex->surface.u.legacy.level[level].dcc_fast_clear_size)
-                continue;
-
-            if (!vi_get_fast_clear_parameters(fb->cbufs[i]->format,
-                              color, &reset_value,
-                              &clear_words_needed))
-                continue;
-
-            /* DCC fast clear with MSAA should clear CMASK to 0xC. */
-            if (tex->resource.b.b.nr_samples >= 2 && tex->cmask.size) {
-                /* TODO: This doesn't work with MSAA. */
-                if (clear_words_needed)
-                    continue;
-
-                rctx->clear_buffer(&rctx->b, &tex->cmask_buffer->b.b,
-                           tex->cmask.offset, tex->cmask.size,
-                           0xCCCCCCCC, R600_COHERENCY_CB_META);
-                cleared_cmask = true;
-            }
-
-            vi_dcc_clear_level(rctx, tex, 0, reset_value);
-
-            if (clear_words_needed || cleared_cmask) {
-                bool need_compressed_update = !tex->dirty_level_mask;
-
-                tex->dirty_level_mask |= 1 << level;
-
-                if (need_compressed_update)
- p_atomic_inc(&rctx->screen->compressed_colortex_counter);
-            }
-            tex->separate_dcc_dirty = true;
-        } else {
-            /* 128-bit formats are unusupported */
-            if (tex->surface.bpe > 8) {
-                continue;
-            }
-
-            /* RB+ doesn't work with CMASK fast clear on Stoney. */
-            if (rctx->family == CHIP_STONEY)
-                continue;
-
-            /* ensure CMASK is enabled */
-            r600_texture_alloc_cmask_separate(rctx->screen, tex);
-            if (tex->cmask.size == 0) {
-                continue;
-            }
-
-            /* Do the fast clear. */
-            rctx->clear_buffer(&rctx->b, &tex->cmask_buffer->b.b,
-                       tex->cmask.offset, tex->cmask.size, 0,
-                       R600_COHERENCY_CB_META);
-
-            bool need_compressed_update = !tex->dirty_level_mask;
-
-            tex->dirty_level_mask |= 1 << level;
-
-            if (need_compressed_update)
- p_atomic_inc(&rctx->screen->compressed_colortex_counter);
-        }
-
-        /* We can change the micro tile mode before a full clear. */
-        si_set_optimal_micro_tile_mode(rctx->screen, tex);
-
-        evergreen_set_clear_color(tex, fb->cbufs[i]->format, color);
-
-        if (dirty_cbufs)
-            *dirty_cbufs |= 1 << i;
-        rctx->set_atom_dirty(rctx, fb_state, true);
-        *buffers &= ~clear_bit;
-    }
-}
-
  static struct pipe_memory_object *
  r600_memobj_from_handle(struct pipe_screen *screen,
              struct winsys_handle *whandle,
              bool dedicated)
  {
      struct r600_common_screen *rscreen = (struct r600_common_screen*)screen;       struct r600_memory_object *memobj = CALLOC_STRUCT(r600_memory_object);
      struct pb_buffer *buf = NULL;
      uint32_t stride, offset;
@@ -2915,12 +2379,11 @@ void si_init_screen_texture_functions(struct r600_common_screen *rscreen)
      rscreen->b.resource_from_memobj = r600_texture_from_memobj;
      rscreen->b.memobj_create_from_handle = r600_memobj_from_handle;
      rscreen->b.memobj_destroy = r600_memobj_destroy;
      rscreen->b.check_resource_capability = si_check_resource_capability;
  }
  void si_init_context_texture_functions(struct r600_common_context *rctx)
  {
      rctx->b.create_surface = r600_create_surface;
      rctx->b.surface_destroy = r600_surface_destroy;
-    rctx->b.clear_texture = r600_clear_texture;
  }
diff --git a/src/gallium/drivers/radeonsi/Makefile.sources b/src/gallium/drivers/radeonsi/Makefile.sources
index 8dd33f6..18cd7d1 100644
--- a/src/gallium/drivers/radeonsi/Makefile.sources
+++ b/src/gallium/drivers/radeonsi/Makefile.sources
@@ -1,18 +1,19 @@
  GENERATED_SOURCES := \
      si_driinfo.h
  C_SOURCES := \
      $(GENERATED_SOURCES) \
      cik_sdma.c \
      driinfo_radeonsi.h \
      si_blit.c \
+    si_clear.c \
      si_compute.c \
      si_compute.h \
      si_cp_dma.c \
      si_debug.c \
      si_descriptors.c \
      si_dma.c \
      si_fence.c \
      si_hw_context.c \
      si_pipe.c \
      si_pipe.h \
diff --git a/src/gallium/drivers/radeonsi/meson.build b/src/gallium/drivers/radeonsi/meson.build
index 974004d..a04ea4c 100644
--- a/src/gallium/drivers/radeonsi/meson.build
+++ b/src/gallium/drivers/radeonsi/meson.build
@@ -15,20 +15,21 @@
  # 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.
  files_libradeonsi = files(
    'cik_sdma.c',
    'driinfo_radeonsi.h',
    'si_blit.c',
+  'si_clear.c',
    'si_compute.c',
    'si_compute.h',
    'si_cp_dma.c',
    'si_debug.c',
    'si_descriptors.c',
    'si_dma.c',
    'si_fence.c',
    'si_hw_context.c',
    'si_pipe.c',
    'si_pipe.h',
diff --git a/src/gallium/drivers/radeonsi/si_blit.c b/src/gallium/drivers/radeonsi/si_blit.c
index abf25b6..e80bf5c2 100644
--- a/src/gallium/drivers/radeonsi/si_blit.c
+++ b/src/gallium/drivers/radeonsi/si_blit.c
@@ -20,44 +20,34 @@
   * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
   * USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  #include "si_pipe.h"
  #include "si_compute.h"
  #include "util/u_format.h"
  #include "util/u_log.h"
  #include "util/u_surface.h"
-enum si_blitter_op /* bitmask */
-{
-    SI_SAVE_TEXTURES      = 1,
-    SI_SAVE_FRAMEBUFFER   = 2,
-    SI_SAVE_FRAGMENT_STATE = 4,
-    SI_DISABLE_RENDER_COND = 8,
-
-    SI_CLEAR         = SI_SAVE_FRAGMENT_STATE,
-
-    SI_CLEAR_SURFACE = SI_SAVE_FRAMEBUFFER | SI_SAVE_FRAGMENT_STATE,
-
+enum {
      SI_COPY          = SI_SAVE_FRAMEBUFFER | SI_SAVE_TEXTURES |
                 SI_SAVE_FRAGMENT_STATE | SI_DISABLE_RENDER_COND,
      SI_BLIT          = SI_SAVE_FRAMEBUFFER | SI_SAVE_TEXTURES |
                 SI_SAVE_FRAGMENT_STATE,
      SI_DECOMPRESS    = SI_SAVE_FRAMEBUFFER | SI_SAVE_FRAGMENT_STATE |
                 SI_DISABLE_RENDER_COND,
      SI_COLOR_RESOLVE = SI_SAVE_FRAMEBUFFER | SI_SAVE_FRAGMENT_STATE
  };
-static void si_blitter_begin(struct pipe_context *ctx, enum si_blitter_op op)
+void si_blitter_begin(struct pipe_context *ctx, enum si_blitter_op op)
  {
      struct si_context *sctx = (struct si_context *)ctx;
      util_blitter_save_vertex_shader(sctx->blitter, sctx->vs_shader.cso);       util_blitter_save_tessctrl_shader(sctx->blitter, sctx->tcs_shader.cso);       util_blitter_save_tesseval_shader(sctx->blitter, sctx->tes_shader.cso);       util_blitter_save_geometry_shader(sctx->blitter, sctx->gs_shader.cso);       util_blitter_save_so_targets(sctx->blitter, sctx->streamout.num_targets,                        (struct pipe_stream_output_target**)sctx->streamout.targets);       util_blitter_save_rasterizer(sctx->blitter, sctx->queued.named.rasterizer); @@ -80,21 +70,21 @@ static void si_blitter_begin(struct pipe_context *ctx, enum si_blitter_op op) (void**)sctx->samplers[PIPE_SHADER_FRAGMENT].sampler_states);
          util_blitter_save_fragment_sampler_views(sctx->blitter, 2,
              sctx->samplers[PIPE_SHADER_FRAGMENT].views);
      }
      if (op & SI_DISABLE_RENDER_COND)
          sctx->b.render_cond_force_off = true;
  }
-static void si_blitter_end(struct pipe_context *ctx)
+void si_blitter_end(struct pipe_context *ctx)
  {
      struct si_context *sctx = (struct si_context *)ctx;
      sctx->b.render_cond_force_off = false;
      /* Restore shader pointers because the VS blit shader changed all
       * non-global VS user SGPRs. */
      sctx->shader_pointers_dirty |= SI_DESCS_SHADER_MASK(VERTEX);
      sctx->vertex_buffer_pointer_dirty = true;
      si_mark_atom_dirty(sctx, &sctx->shader_pointers.atom);
@@ -812,169 +802,20 @@ void si_decompress_textures(struct si_context *sctx, unsigned shader_mask)
      } else if (shader_mask & (1 << PIPE_SHADER_COMPUTE)) {
          if (sctx->cs_shader_state.program->uses_bindless_samplers)
              si_decompress_resident_textures(sctx);
          if (sctx->cs_shader_state.program->uses_bindless_images)
              si_decompress_resident_images(sctx);
      }
      si_check_render_feedback(sctx);
  }
-static void si_clear(struct pipe_context *ctx, unsigned buffers,
-             const union pipe_color_union *color,
-             double depth, unsigned stencil)
-{
-    struct si_context *sctx = (struct si_context *)ctx;
-    struct pipe_framebuffer_state *fb = &sctx->framebuffer.state;
-    struct pipe_surface *zsbuf = fb->zsbuf;
-    struct r600_texture *zstex =
-        zsbuf ? (struct r600_texture*)zsbuf->texture : NULL;
-
-    if (buffers & PIPE_CLEAR_COLOR) {
-        si_do_fast_color_clear(&sctx->b, fb,
-                          &sctx->framebuffer.atom, &buffers,
-                          &sctx->framebuffer.dirty_cbufs,
-                          color);
-        if (!buffers)
-            return; /* all buffers have been fast cleared */
-    }
-
-    if (buffers & PIPE_CLEAR_COLOR) {
-        int i;
-
-        /* These buffers cannot use fast clear, make sure to disable expansion. */
-        for (i = 0; i < fb->nr_cbufs; i++) {
-            struct r600_texture *tex;
-
-            /* If not clearing this buffer, skip. */
-            if (!(buffers & (PIPE_CLEAR_COLOR0 << i)))
-                continue;
-
-            if (!fb->cbufs[i])
-                continue;
-
-            tex = (struct r600_texture *)fb->cbufs[i]->texture;
-            if (tex->fmask.size == 0)
-                tex->dirty_level_mask &= ~(1 << fb->cbufs[i]->u.tex.level);
-        }
-    }
-
-    if (zstex &&
-        r600_htile_enabled(zstex, zsbuf->u.tex.level) &&
-        zsbuf->u.tex.first_layer == 0 &&
-        zsbuf->u.tex.last_layer == util_max_layer(&zstex->resource.b.b, 0)) {
-        /* TC-compatible HTILE only supports depth clears to 0 or 1. */
-        if (buffers & PIPE_CLEAR_DEPTH &&
-            (!zstex->tc_compatible_htile ||
-             depth == 0 || depth == 1)) {
-            /* Need to disable EXPCLEAR temporarily if clearing
-             * to a new value. */
-            if (!zstex->depth_cleared || zstex->depth_clear_value != depth) {
-                sctx->db_depth_disable_expclear = true;
-            }
-
-            zstex->depth_clear_value = depth;
-            sctx->framebuffer.dirty_zsbuf = true;
-            si_mark_atom_dirty(sctx, &sctx->framebuffer.atom); /* updates DB_DEPTH_CLEAR */
-            sctx->db_depth_clear = true;
-            si_mark_atom_dirty(sctx, &sctx->db_render_state);
-        }
-
-        /* TC-compatible HTILE only supports stencil clears to 0. */
-        if (buffers & PIPE_CLEAR_STENCIL &&
-            (!zstex->tc_compatible_htile || stencil == 0)) {
-            stencil &= 0xff;
-
-            /* Need to disable EXPCLEAR temporarily if clearing
-             * to a new value. */
-            if (!zstex->stencil_cleared || zstex->stencil_clear_value != stencil) {
-                sctx->db_stencil_disable_expclear = true;
-            }
-
-            zstex->stencil_clear_value = stencil;
-            sctx->framebuffer.dirty_zsbuf = true;
-            si_mark_atom_dirty(sctx, &sctx->framebuffer.atom); /* updates DB_STENCIL_CLEAR */
-            sctx->db_stencil_clear = true;
-            si_mark_atom_dirty(sctx, &sctx->db_render_state);
-        }
-
-        /* TODO: Find out what's wrong here. Fast depth clear leads to
-         * corruption in ARK: Survival Evolved, but that may just be
-         * a coincidence and the root cause is elsewhere.
-         *
-         * The corruption can be fixed by putting the DB flush before
-         * or after the depth clear. (surprisingly)
-         *
-         * https://bugs.freedesktop.org/show_bug.cgi?id=102955 (apitrace)
-         *
-         * This hack decreases back-to-back ClearDepth performance.
-         */
-        if (sctx->screen->clear_db_cache_before_clear) {
-            sctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_DB;
-        }
-    }
-
-    si_blitter_begin(ctx, SI_CLEAR);
-    util_blitter_clear(sctx->blitter, fb->width, fb->height,
-               util_framebuffer_get_num_layers(fb),
-               buffers, color, depth, stencil);
-    si_blitter_end(ctx);
-
-    if (sctx->db_depth_clear) {
-        sctx->db_depth_clear = false;
-        sctx->db_depth_disable_expclear = false;
-        zstex->depth_cleared = true;
-        si_mark_atom_dirty(sctx, &sctx->db_render_state);
-    }
-
-    if (sctx->db_stencil_clear) {
-        sctx->db_stencil_clear = false;
-        sctx->db_stencil_disable_expclear = false;
-        zstex->stencil_cleared = true;
-        si_mark_atom_dirty(sctx, &sctx->db_render_state);
-    }
-}
-
-static void si_clear_render_target(struct pipe_context *ctx,
-                   struct pipe_surface *dst,
-                   const union pipe_color_union *color,
-                   unsigned dstx, unsigned dsty,
-                   unsigned width, unsigned height,
-                   bool render_condition_enabled)
-{
-    struct si_context *sctx = (struct si_context *)ctx;
-
-    si_blitter_begin(ctx, SI_CLEAR_SURFACE |
-             (render_condition_enabled ? 0 : SI_DISABLE_RENDER_COND));
-    util_blitter_clear_render_target(sctx->blitter, dst, color,
-                     dstx, dsty, width, height);
-    si_blitter_end(ctx);
-}
-
-static void si_clear_depth_stencil(struct pipe_context *ctx,
-                   struct pipe_surface *dst,
-                   unsigned clear_flags,
-                   double depth,
-                   unsigned stencil,
-                   unsigned dstx, unsigned dsty,
-                   unsigned width, unsigned height,
-                   bool render_condition_enabled)
-{
-    struct si_context *sctx = (struct si_context *)ctx;
-
-    si_blitter_begin(ctx, SI_CLEAR_SURFACE |
-             (render_condition_enabled ? 0 : SI_DISABLE_RENDER_COND));
-    util_blitter_clear_depth_stencil(sctx->blitter, dst, clear_flags, depth, stencil,
-                     dstx, dsty, width, height);
-    si_blitter_end(ctx);
-}
-
  /* Helper for decompressing a portion of a color or depth resource before
   * blitting if any decompression is needed.
   * The driver doesn't decompress resources automatically while u_blitter is
   * rendering. */
  static void si_decompress_subresource(struct pipe_context *ctx,
                        struct pipe_resource *tex,
                        unsigned planes, unsigned level,
                        unsigned first_layer, unsigned last_layer)
  {
      struct si_context *sctx = (struct si_context *)ctx;
@@ -1293,21 +1134,21 @@ static bool do_hardware_msaa_resolve(struct pipe_context *ctx,
          /* Resolving into a surface with DCC is unsupported. Since
           * it's being overwritten anyway, clear it to uncompressed.
           * This is still the fastest codepath even with this clear.
           */
          if (vi_dcc_enabled(dst, info->dst.level)) {
              /* TODO: Implement per-level DCC clears for GFX9. */
              if (sctx->b.chip_class >= GFX9 &&
                  info->dst.resource->last_level != 0)
                  goto resolve_to_temp;
-            vi_dcc_clear_level(&sctx->b, dst, info->dst.level,
+            vi_dcc_clear_level(sctx, dst, info->dst.level,
                         0xFFFFFFFF);
              dst->dirty_level_mask &= ~(1 << info->dst.level);
          }
          /* Resolve directly from src to dst. */
          si_do_CB_resolve(sctx, info, info->dst.resource,
                   info->dst.level, info->dst.box.z, format);
          return true;
      }
@@ -1537,21 +1378,18 @@ static void si_pipe_clear_buffer(struct pipe_context *ctx,
      default:
          dword_value = *(uint32_t*)clear_value_ptr;
      }
      sctx->b.clear_buffer(ctx, dst, offset, size, dword_value,
                   R600_COHERENCY_SHADER);
  }
  void si_init_blit_functions(struct si_context *sctx)
  {
-    sctx->b.b.clear = si_clear;
      sctx->b.b.clear_buffer = si_pipe_clear_buffer;
-    sctx->b.b.clear_render_target = si_clear_render_target;
-    sctx->b.b.clear_depth_stencil = si_clear_depth_stencil;
      sctx->b.b.resource_copy_region = si_resource_copy_region;
      sctx->b.b.blit = si_blit;
      sctx->b.b.flush_resource = si_flush_resource;
      sctx->b.b.generate_mipmap = si_generate_mipmap;
      sctx->b.blit_decompress_depth = si_blit_decompress_depth;
      sctx->b.decompress_dcc = si_decompress_dcc;
  }
diff --git a/src/gallium/drivers/radeonsi/si_clear.c b/src/gallium/drivers/radeonsi/si_clear.c
new file mode 100644
index 0000000..d99947f
--- /dev/null
+++ b/src/gallium/drivers/radeonsi/si_clear.c
@@ -0,0 +1,725 @@
+/*
+ * Copyright 2017 Advanced Micro Devices, 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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 "si_pipe.h"
+#include "sid.h"
+
+#include "util/u_format.h"
+#include "util/u_pack_color.h"
+#include "util/u_surface.h"
+
+enum {
+    SI_CLEAR         = SI_SAVE_FRAGMENT_STATE,
+    SI_CLEAR_SURFACE = SI_SAVE_FRAMEBUFFER | SI_SAVE_FRAGMENT_STATE,
+};
+
+static void si_alloc_separate_cmask(struct si_screen *sscreen,
+                    struct r600_texture *rtex)
+{
+    if (rtex->cmask_buffer)
+                return;
+
+    assert(rtex->cmask.size == 0);
+
+    si_texture_get_cmask_info(&sscreen->b, rtex, &rtex->cmask);
+    if (!rtex->cmask.size)
+        return;
+
+    rtex->cmask_buffer = (struct r600_resource *)
+        si_aligned_buffer_create(&sscreen->b.b,
+                     R600_RESOURCE_FLAG_UNMAPPABLE,
+                     PIPE_USAGE_DEFAULT,
+                     rtex->cmask.size,
+                     rtex->cmask.alignment);
+    if (rtex->cmask_buffer == NULL) {
+        rtex->cmask.size = 0;
+        return;
+    }
+
+    /* update colorbuffer state bits */
+    rtex->cmask.base_address_reg = rtex->cmask_buffer->gpu_address >> 8;
+
+    rtex->cb_color_info |= S_028C70_FAST_CLEAR(1);
+
+    p_atomic_inc(&sscreen->b.compressed_colortex_counter);
+}
+
+static void si_set_clear_color(struct r600_texture *rtex,
+                   enum pipe_format surface_format,
+                   const union pipe_color_union *color)
+{
+    union util_color uc;
+
+    memset(&uc, 0, sizeof(uc));
+
+    if (rtex->surface.bpe == 16) {
+        /* DCC fast clear only:
+         *   CLEAR_WORD0 = R = G = B
+         *   CLEAR_WORD1 = A
+         */
+        assert(color->ui[0] == color->ui[1] &&
+               color->ui[0] == color->ui[2]);
+        uc.ui[0] = color->ui[0];
+        uc.ui[1] = color->ui[3];
+    } else if (util_format_is_pure_uint(surface_format)) {
+        util_format_write_4ui(surface_format, color->ui, 0, &uc, 0, 0, 0, 1, 1);
+    } else if (util_format_is_pure_sint(surface_format)) {
+        util_format_write_4i(surface_format, color->i, 0, &uc, 0, 0, 0, 1, 1);
+    } else {
+        util_pack_color(color->f, surface_format, &uc);
+    }
+
+    memcpy(rtex->color_clear_value, &uc, 2 * sizeof(uint32_t));
+}
+
+static bool vi_get_fast_clear_parameters(enum pipe_format surface_format,
+                     const union pipe_color_union *color,
+                     uint32_t* reset_value,
+                     bool* clear_words_needed)
+{
+    bool values[4] = {};
+    int i;
+    bool main_value = false;
+    bool extra_value = false;
+    int extra_channel;
+
+    /* This is needed to get the correct DCC clear value for luminance formats. +     * 1) Get the linear format (because the next step can't handle L8_SRGB).
+     * 2) Convert luminance to red. (the real hw format for luminance)
+     */
+    surface_format = util_format_linear(surface_format);
+    surface_format = util_format_luminance_to_red(surface_format);
+
+    const struct util_format_description *desc = util_format_description(surface_format);
+
+    if (desc->block.bits == 128 &&
+        (color->ui[0] != color->ui[1] ||
+         color->ui[0] != color->ui[2]))
+        return false;
+
+    *clear_words_needed = true;
+    *reset_value = 0x20202020U;
+
+    /* If we want to clear without needing a fast clear eliminate step, we
+     * can set each channel to 0 or 1 (or 0/max for integer formats). We
+     * have two sets of flags, one for the last or first channel(extra) and
+     * one for the other channels(main).
+     */
+
+    if (surface_format == PIPE_FORMAT_R11G11B10_FLOAT ||
+        surface_format == PIPE_FORMAT_B5G6R5_UNORM ||
+        surface_format == PIPE_FORMAT_B5G6R5_SRGB ||
+        util_format_is_alpha(surface_format)) {
+        extra_channel = -1;
+    } else if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
+        if (si_translate_colorswap(surface_format, false) <= 1)
+            extra_channel = desc->nr_channels - 1;
+        else
+            extra_channel = 0;
+    } else
+        return true;
+
+    for (i = 0; i < 4; ++i) {
+        int index = desc->swizzle[i] - PIPE_SWIZZLE_X;
+
+        if (desc->swizzle[i] < PIPE_SWIZZLE_X ||
+            desc->swizzle[i] > PIPE_SWIZZLE_W)
+            continue;
+
+        if (desc->channel[i].pure_integer &&
+            desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
+            /* Use the maximum value for clamping the clear color. */
+            int max = u_bit_consecutive(0, desc->channel[i].size - 1);
+
+            values[i] = color->i[i] != 0;
+            if (color->i[i] != 0 && MIN2(color->i[i], max) != max)
+                return true;
+        } else if (desc->channel[i].pure_integer &&
+               desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) {
+            /* Use the maximum value for clamping the clear color. */
+            unsigned max = u_bit_consecutive(0, desc->channel[i].size);
+
+            values[i] = color->ui[i] != 0U;
+            if (color->ui[i] != 0U && MIN2(color->ui[i], max) != max)
+                return true;
+        } else {
+            values[i] = color->f[i] != 0.0F;
+            if (color->f[i] != 0.0F && color->f[i] != 1.0F)
+                return true;
+        }
+
+        if (index == extra_channel)
+            extra_value = values[i];
+        else
+            main_value = values[i];
+    }
+
+    for (int i = 0; i < 4; ++i)
+        if (values[i] != main_value &&
+            desc->swizzle[i] - PIPE_SWIZZLE_X != extra_channel &&
+            desc->swizzle[i] >= PIPE_SWIZZLE_X &&
+            desc->swizzle[i] <= PIPE_SWIZZLE_W)
+            return true;
+
+    *clear_words_needed = false;
+    if (main_value)
+        *reset_value |= 0x80808080U;
+
+    if (extra_value)
+        *reset_value |= 0x40404040U;
+    return true;
+}
+
+void vi_dcc_clear_level(struct si_context *sctx,
+            struct r600_texture *rtex,
+            unsigned level, unsigned clear_value)
+{
+    struct pipe_resource *dcc_buffer;
+    uint64_t dcc_offset, clear_size;
+
+    assert(vi_dcc_enabled(rtex, level));
+
+    if (rtex->dcc_separate_buffer) {
+        dcc_buffer = &rtex->dcc_separate_buffer->b.b;
+        dcc_offset = 0;
+    } else {
+        dcc_buffer = &rtex->resource.b.b;
+        dcc_offset = rtex->dcc_offset;
+    }
+
+    if (sctx->b.chip_class >= GFX9) {
+        /* Mipmap level clears aren't implemented. */
+        assert(rtex->resource.b.b.last_level == 0);
+        /* MSAA needs a different clear size. */
+        assert(rtex->resource.b.b.nr_samples <= 1);
+        clear_size = rtex->surface.dcc_size;
+    } else {
+        unsigned num_layers = util_max_layer(&rtex->resource.b.b, level) + 1;
+
+        /* If this is 0, fast clear isn't possible. (can occur with MSAA) */
+        assert(rtex->surface.u.legacy.level[level].dcc_fast_clear_size);
+        /* Layered MSAA DCC fast clears need to clear dcc_fast_clear_size
+         * bytes for each layer. This is not currently implemented, and
+         * therefore MSAA DCC isn't even enabled with multiple layers.
+         */
+        assert(rtex->resource.b.b.nr_samples <= 1 || num_layers == 1);
+
+        dcc_offset += rtex->surface.u.legacy.level[level].dcc_offset;
+        clear_size = rtex->surface.u.legacy.level[level].dcc_fast_clear_size *
+                 num_layers;
+    }
+
+    si_clear_buffer(&sctx->b.b, dcc_buffer, dcc_offset, clear_size,
+            clear_value, R600_COHERENCY_CB_META);
+}
+
+/* Set the same micro tile mode as the destination of the last MSAA resolve. + * This allows hitting the MSAA resolve fast path, which requires that both
+ * src and dst micro tile modes match.
+ */
+static void si_set_optimal_micro_tile_mode(struct si_screen *sscreen,
+                       struct r600_texture *rtex)
+{
+    if (rtex->resource.b.is_shared ||
+        rtex->resource.b.b.nr_samples <= 1 ||
+        rtex->surface.micro_tile_mode == rtex->last_msaa_resolve_target_micro_mode)
+        return;
+
+    assert(sscreen->b.chip_class >= GFX9 ||
+           rtex->surface.u.legacy.level[0].mode == RADEON_SURF_MODE_2D);
+    assert(rtex->resource.b.b.last_level == 0);
+
+    if (sscreen->b.chip_class >= GFX9) {
+        /* 4K or larger tiles only. 0 is linear. 1-3 are 256B tiles. */
+        assert(rtex->surface.u.gfx9.surf.swizzle_mode >= 4);
+
+        /* If you do swizzle_mode % 4, you'll get:
+         *   0 = Depth
+         *   1 = Standard,
+         *   2 = Displayable
+         *   3 = Rotated
+         *
+         * Depth-sample order isn't allowed:
+         */
+        assert(rtex->surface.u.gfx9.surf.swizzle_mode % 4 != 0);
+
+        switch (rtex->last_msaa_resolve_target_micro_mode) {
+        case RADEON_MICRO_MODE_DISPLAY:
+            rtex->surface.u.gfx9.surf.swizzle_mode &= ~0x3;
+            rtex->surface.u.gfx9.surf.swizzle_mode += 2; /* D */
+            break;
+        case RADEON_MICRO_MODE_THIN:
+            rtex->surface.u.gfx9.surf.swizzle_mode &= ~0x3;
+            rtex->surface.u.gfx9.surf.swizzle_mode += 1; /* S */
+            break;
+        case RADEON_MICRO_MODE_ROTATED:
+            rtex->surface.u.gfx9.surf.swizzle_mode &= ~0x3;
+            rtex->surface.u.gfx9.surf.swizzle_mode += 3; /* R */
+            break;
+        default: /* depth */
+            assert(!"unexpected micro mode");
+            return;
+        }
+    } else if (sscreen->b.chip_class >= CIK) {
+        /* These magic numbers were copied from addrlib. It doesn't use
+         * any definitions for them either. They are all 2D_TILED_THIN1
+         * modes with different bpp and micro tile mode.
+         */
+        switch (rtex->last_msaa_resolve_target_micro_mode) {
+        case RADEON_MICRO_MODE_DISPLAY:
+            rtex->surface.u.legacy.tiling_index[0] = 10;
+            break;
+        case RADEON_MICRO_MODE_THIN:
+            rtex->surface.u.legacy.tiling_index[0] = 14;
+            break;
+        case RADEON_MICRO_MODE_ROTATED:
+            rtex->surface.u.legacy.tiling_index[0] = 28;
+            break;
+        default: /* depth, thick */
+            assert(!"unexpected micro mode");
+            return;
+        }
+    } else { /* SI */
+        switch (rtex->last_msaa_resolve_target_micro_mode) {
+        case RADEON_MICRO_MODE_DISPLAY:
+            switch (rtex->surface.bpe) {
+            case 1:
+                            rtex->surface.u.legacy.tiling_index[0] = 10;
+                            break;
+            case 2:
+                            rtex->surface.u.legacy.tiling_index[0] = 11;
+                            break;
+            default: /* 4, 8 */
+                            rtex->surface.u.legacy.tiling_index[0] = 12;
+                            break;
+            }
+            break;
+        case RADEON_MICRO_MODE_THIN:
+            switch (rtex->surface.bpe) {
+            case 1:
+ rtex->surface.u.legacy.tiling_index[0] = 14;
+                                break;
+            case 2:
+ rtex->surface.u.legacy.tiling_index[0] = 15;
+                                break;
+            case 4:
+ rtex->surface.u.legacy.tiling_index[0] = 16;
+                                break;
+            default: /* 8, 16 */
+ rtex->surface.u.legacy.tiling_index[0] = 17;
+                                break;
+            }
+            break;
+        default: /* depth, thick */
+            assert(!"unexpected micro mode");
+            return;
+        }
+    }
+
+    rtex->surface.micro_tile_mode = rtex->last_msaa_resolve_target_micro_mode;
+
+    p_atomic_inc(&sscreen->b.dirty_tex_counter);
+}
+
+static void si_do_fast_color_clear(struct si_context *sctx,
+                   struct pipe_framebuffer_state *fb,
+                   struct r600_atom *fb_state,
+                   unsigned *buffers, ubyte *dirty_cbufs,
+                   const union pipe_color_union *color)
+{
+    int i;
+
+    /* This function is broken in BE, so just disable this path for now */
+#ifdef PIPE_ARCH_BIG_ENDIAN
+    return;
+#endif
+
+    if (sctx->b.render_cond)
+        return;
+
+    for (i = 0; i < fb->nr_cbufs; i++) {
+        struct r600_texture *tex;
+        unsigned clear_bit = PIPE_CLEAR_COLOR0 << i;
+
+        if (!fb->cbufs[i])
+            continue;
+
+        /* if this colorbuffer is not being cleared */
+        if (!(*buffers & clear_bit))
+            continue;
+
+        unsigned level = fb->cbufs[i]->u.tex.level;
+        tex = (struct r600_texture *)fb->cbufs[i]->texture;
+
+        /* the clear is allowed if all layers are bound */
+        if (fb->cbufs[i]->u.tex.first_layer != 0 ||
+            fb->cbufs[i]->u.tex.last_layer != util_max_layer(&tex->resource.b.b, 0)) {
+            continue;
+        }
+
+        /* cannot clear mipmapped textures */
+        if (fb->cbufs[i]->texture->last_level != 0) {
+            continue;
+        }
+
+        /* only supported on tiled surfaces */
+        if (tex->surface.is_linear) {
+            continue;
+        }
+
+        /* shared textures can't use fast clear without an explicit flush,
+         * because there is no way to communicate the clear color among
+         * all clients
+         */
+        if (tex->resource.b.is_shared &&
+            !(tex->resource.external_usage & PIPE_HANDLE_USAGE_EXPLICIT_FLUSH))
+            continue;
+
+        /* fast color clear with 1D tiling doesn't work on old kernels and CIK */
+        if (sctx->b.chip_class == CIK &&
+            tex->surface.u.legacy.level[0].mode == RADEON_SURF_MODE_1D &&
+            sctx->screen->b.info.drm_major == 2 &&
+            sctx->screen->b.info.drm_minor < 38) {
+            continue;
+        }
+
+        /* Fast clear is the most appropriate place to enable DCC for
+         * displayable surfaces.
+         */
+        if (sctx->b.chip_class >= VI &&
+            !(sctx->screen->b.debug_flags & DBG(NO_DCC_FB))) {
+            vi_separate_dcc_try_enable(&sctx->b, tex);
+
+            /* RB+ isn't supported with a CMASK clear only on Stoney,
+             * so all clears are considered to be hypothetically slow
+             * clears, which is weighed when determining whether to
+             * enable separate DCC.
+             */
+            if (tex->dcc_gather_statistics &&
+                sctx->b.family == CHIP_STONEY)
+                tex->num_slow_clears++;
+        }
+
+        /* Try to clear DCC first, otherwise try CMASK. */
+        if (vi_dcc_enabled(tex, 0)) {
+            uint32_t reset_value;
+            bool clear_words_needed, cleared_cmask = false;
+
+            if (sctx->screen->b.debug_flags & DBG(NO_DCC_CLEAR))
+                continue;
+
+            /* This can only occur with MSAA. */
+            if (sctx->b.chip_class == VI &&
+                !tex->surface.u.legacy.level[level].dcc_fast_clear_size)
+                continue;
+
+            if (!vi_get_fast_clear_parameters(fb->cbufs[i]->format,
+                              color, &reset_value,
+                              &clear_words_needed))
+                continue;
+
+            /* DCC fast clear with MSAA should clear CMASK to 0xC. */
+            if (tex->resource.b.b.nr_samples >= 2 && tex->cmask.size) {
+                /* TODO: This doesn't work with MSAA. */
+                if (clear_words_needed)
+                    continue;
+
+                si_clear_buffer(&sctx->b.b, &tex->cmask_buffer->b.b,
+                        tex->cmask.offset, tex->cmask.size,
+                        0xCCCCCCCC, R600_COHERENCY_CB_META);
+                cleared_cmask = true;
+            }
+
+            vi_dcc_clear_level(sctx, tex, 0, reset_value);
+
+            if (clear_words_needed || cleared_cmask) {
+                bool need_compressed_update = !tex->dirty_level_mask;
+
+                tex->dirty_level_mask |= 1 << level;
+
+                if (need_compressed_update)
+ p_atomic_inc(&sctx->screen->b.compressed_colortex_counter);
+            }
+            tex->separate_dcc_dirty = true;
+        } else {
+            /* 128-bit formats are unusupported */
+            if (tex->surface.bpe > 8) {
+                continue;
+            }
+
+            /* RB+ doesn't work with CMASK fast clear on Stoney. */
+            if (sctx->b.family == CHIP_STONEY)
+                continue;
+
+            /* ensure CMASK is enabled */
+            si_alloc_separate_cmask(sctx->screen, tex);
+            if (tex->cmask.size == 0) {
+                continue;
+            }
+
+            /* Do the fast clear. */
+            si_clear_buffer(&sctx->b.b, &tex->cmask_buffer->b.b,
+                    tex->cmask.offset, tex->cmask.size, 0,
+                    R600_COHERENCY_CB_META);
+
+            bool need_compressed_update = !tex->dirty_level_mask;
+
+            tex->dirty_level_mask |= 1 << level;
+
+            if (need_compressed_update)
+ p_atomic_inc(&sctx->screen->b.compressed_colortex_counter);
+        }
+
+        /* We can change the micro tile mode before a full clear. */
+        si_set_optimal_micro_tile_mode(sctx->screen, tex);
+
+        si_set_clear_color(tex, fb->cbufs[i]->format, color);
+
+        if (dirty_cbufs)
+            *dirty_cbufs |= 1 << i;
+        sctx->b.set_atom_dirty(&sctx->b, fb_state, true);
+        *buffers &= ~clear_bit;
+    }
+}
+
+static void si_clear(struct pipe_context *ctx, unsigned buffers,
+             const union pipe_color_union *color,
+             double depth, unsigned stencil)
+{
+    struct si_context *sctx = (struct si_context *)ctx;
+    struct pipe_framebuffer_state *fb = &sctx->framebuffer.state;
+    struct pipe_surface *zsbuf = fb->zsbuf;
+    struct r600_texture *zstex =
+        zsbuf ? (struct r600_texture*)zsbuf->texture : NULL;
+
+    if (buffers & PIPE_CLEAR_COLOR) {
+        si_do_fast_color_clear(sctx, fb,
+                       &sctx->framebuffer.atom, &buffers,
+                       &sctx->framebuffer.dirty_cbufs,
+                       color);
+        if (!buffers)
+            return; /* all buffers have been fast cleared */
+    }
+
+    if (buffers & PIPE_CLEAR_COLOR) {
+        int i;
+
+        /* These buffers cannot use fast clear, make sure to disable expansion. */
+        for (i = 0; i < fb->nr_cbufs; i++) {
+            struct r600_texture *tex;
+
+            /* If not clearing this buffer, skip. */
+            if (!(buffers & (PIPE_CLEAR_COLOR0 << i)))
+                continue;
+
+            if (!fb->cbufs[i])
+                continue;
+
+            tex = (struct r600_texture *)fb->cbufs[i]->texture;
+            if (tex->fmask.size == 0)
+                tex->dirty_level_mask &= ~(1 << fb->cbufs[i]->u.tex.level);
+        }
+    }
+
+    if (zstex &&
+        r600_htile_enabled(zstex, zsbuf->u.tex.level) &&
+        zsbuf->u.tex.first_layer == 0 &&
+        zsbuf->u.tex.last_layer == util_max_layer(&zstex->resource.b.b, 0)) {
+        /* TC-compatible HTILE only supports depth clears to 0 or 1. */
+        if (buffers & PIPE_CLEAR_DEPTH &&
+            (!zstex->tc_compatible_htile ||
+             depth == 0 || depth == 1)) {
+            /* Need to disable EXPCLEAR temporarily if clearing
+             * to a new value. */
+            if (!zstex->depth_cleared || zstex->depth_clear_value != depth) {
+                sctx->db_depth_disable_expclear = true;
+            }
+
+            zstex->depth_clear_value = depth;
+            sctx->framebuffer.dirty_zsbuf = true;
+            si_mark_atom_dirty(sctx, &sctx->framebuffer.atom); /* updates DB_DEPTH_CLEAR */
+            sctx->db_depth_clear = true;
+            si_mark_atom_dirty(sctx, &sctx->db_render_state);
+        }
+
+        /* TC-compatible HTILE only supports stencil clears to 0. */
+        if (buffers & PIPE_CLEAR_STENCIL &&
+            (!zstex->tc_compatible_htile || stencil == 0)) {
+            stencil &= 0xff;
+
+            /* Need to disable EXPCLEAR temporarily if clearing
+             * to a new value. */
+            if (!zstex->stencil_cleared || zstex->stencil_clear_value != stencil) {
+                sctx->db_stencil_disable_expclear = true;
+            }
+
+            zstex->stencil_clear_value = stencil;
+            sctx->framebuffer.dirty_zsbuf = true;
+            si_mark_atom_dirty(sctx, &sctx->framebuffer.atom); /* updates DB_STENCIL_CLEAR */
+            sctx->db_stencil_clear = true;
+            si_mark_atom_dirty(sctx, &sctx->db_render_state);
+        }
+
+        /* TODO: Find out what's wrong here. Fast depth clear leads to
+         * corruption in ARK: Survival Evolved, but that may just be
+         * a coincidence and the root cause is elsewhere.
+         *
+         * The corruption can be fixed by putting the DB flush before
+         * or after the depth clear. (surprisingly)
+         *
+         * https://bugs.freedesktop.org/show_bug.cgi?id=102955 (apitrace)
+         *
+         * This hack decreases back-to-back ClearDepth performance.
+         */
+        if (sctx->screen->clear_db_cache_before_clear) {
+            sctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_DB;
+        }
+    }
+
+    si_blitter_begin(ctx, SI_CLEAR);
+    util_blitter_clear(sctx->blitter, fb->width, fb->height,
+               util_framebuffer_get_num_layers(fb),
+               buffers, color, depth, stencil);
+    si_blitter_end(ctx);
+
+    if (sctx->db_depth_clear) {
+        sctx->db_depth_clear = false;
+        sctx->db_depth_disable_expclear = false;
+        zstex->depth_cleared = true;
+        si_mark_atom_dirty(sctx, &sctx->db_render_state);
+    }
+
+    if (sctx->db_stencil_clear) {
+        sctx->db_stencil_clear = false;
+        sctx->db_stencil_disable_expclear = false;
+        zstex->stencil_cleared = true;
+        si_mark_atom_dirty(sctx, &sctx->db_render_state);
+    }
+}
+
+static void si_clear_render_target(struct pipe_context *ctx,
+                   struct pipe_surface *dst,
+                   const union pipe_color_union *color,
+                   unsigned dstx, unsigned dsty,
+                   unsigned width, unsigned height,
+                   bool render_condition_enabled)
+{
+    struct si_context *sctx = (struct si_context *)ctx;
+
+    si_blitter_begin(ctx, SI_CLEAR_SURFACE |
+             (render_condition_enabled ? 0 : SI_DISABLE_RENDER_COND));
+    util_blitter_clear_render_target(sctx->blitter, dst, color,
+                     dstx, dsty, width, height);
+    si_blitter_end(ctx);
+}
+
+static void si_clear_depth_stencil(struct pipe_context *ctx,
+                   struct pipe_surface *dst,
+                   unsigned clear_flags,
+                   double depth,
+                   unsigned stencil,
+                   unsigned dstx, unsigned dsty,
+                   unsigned width, unsigned height,
+                   bool render_condition_enabled)
+{
+    struct si_context *sctx = (struct si_context *)ctx;
+
+    si_blitter_begin(ctx, SI_CLEAR_SURFACE |
+             (render_condition_enabled ? 0 : SI_DISABLE_RENDER_COND));
+    util_blitter_clear_depth_stencil(sctx->blitter, dst, clear_flags, depth, stencil,
+                     dstx, dsty, width, height);
+    si_blitter_end(ctx);
+}
+
+static void si_clear_texture(struct pipe_context *pipe,
+                 struct pipe_resource *tex,
+                 unsigned level,
+                 const struct pipe_box *box,
+                 const void *data)
+{
+    struct pipe_screen *screen = pipe->screen;
+    struct r600_texture *rtex = (struct r600_texture*)tex;
+    struct pipe_surface tmpl = {{0}};
+    struct pipe_surface *sf;
+    const struct util_format_description *desc =
+        util_format_description(tex->format);
+
+    tmpl.format = tex->format;
+    tmpl.u.tex.first_layer = box->z;
+    tmpl.u.tex.last_layer = box->z + box->depth - 1;
+    tmpl.u.tex.level = level;
+    sf = pipe->create_surface(pipe, tex, &tmpl);
+    if (!sf)
+        return;
+
+    if (rtex->is_depth) {
+        unsigned clear;
+        float depth;
+        uint8_t stencil = 0;
+
+        /* Depth is always present. */
+        clear = PIPE_CLEAR_DEPTH;
+        desc->unpack_z_float(&depth, 0, data, 0, 1, 1);
+
+        if (rtex->surface.has_stencil) {
+            clear |= PIPE_CLEAR_STENCIL;
+            desc->unpack_s_8uint(&stencil, 0, data, 0, 1, 1);
+        }
+
+        si_clear_depth_stencil(pipe, sf, clear, depth, stencil,
+                       box->x, box->y,
+                       box->width, box->height, false);
+    } else {
+        union pipe_color_union color;
+
+        /* pipe_color_union requires the full vec4 representation. */
+        if (util_format_is_pure_uint(tex->format))
+            desc->unpack_rgba_uint(color.ui, 0, data, 0, 1, 1);
+        else if (util_format_is_pure_sint(tex->format))
+            desc->unpack_rgba_sint(color.i, 0, data, 0, 1, 1);
+        else
+            desc->unpack_rgba_float(color.f, 0, data, 0, 1, 1);
+
+        if (screen->is_format_supported(screen, tex->format,
+                        tex->target, 0,
+                        PIPE_BIND_RENDER_TARGET)) {
+            si_clear_render_target(pipe, sf, &color,
+                           box->x, box->y,
+                           box->width, box->height, false);
+        } else {
+            /* Software fallback - just for R9G9B9E5_FLOAT */
+            util_clear_render_target(pipe, sf, &color,
+                         box->x, box->y,
+                         box->width, box->height);
+        }
+    }
+    pipe_surface_reference(&sf, NULL);
+}
+
+void si_init_clear_functions(struct si_context *sctx)
+{
+    sctx->b.b.clear = si_clear;
+    sctx->b.b.clear_render_target = si_clear_render_target;
+    sctx->b.b.clear_depth_stencil = si_clear_depth_stencil;
+    sctx->b.b.clear_texture = si_clear_texture;
+}
diff --git a/src/gallium/drivers/radeonsi/si_cp_dma.c b/src/gallium/drivers/radeonsi/si_cp_dma.c
index 4ac0c34..ca82626 100644
--- a/src/gallium/drivers/radeonsi/si_cp_dma.c
+++ b/src/gallium/drivers/radeonsi/si_cp_dma.c
@@ -196,23 +196,23 @@ static void si_cp_dma_prepare(struct si_context *sctx, struct pipe_resource *dst
      *is_first = false;
      /* Do the synchronization after the last dma, so that all data
       * is written to memory.
       */
      if (!(user_flags & SI_CPDMA_SKIP_SYNC_AFTER) &&
          byte_count == remaining_size)
          *packet_flags |= CP_DMA_SYNC;
  }
-static void si_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
-                uint64_t offset, uint64_t size, unsigned value,
-                enum r600_coherency coher)
+void si_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
+             uint64_t offset, uint64_t size, unsigned value,
+             enum r600_coherency coher)
  {
      struct si_context *sctx = (struct si_context*)ctx;
      struct radeon_winsys *ws = sctx->b.ws;
      struct r600_resource *rdst = r600_resource(dst);
      unsigned tc_l2_flag = get_tc_l2_flag(sctx, coher);
      unsigned flush_flags = get_flush_flags(sctx, coher);
      uint64_t dma_clear_size;
      bool is_first = true;
      if (!size)
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index 6e433a3..f0a9ad1 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -202,20 +202,21 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen,
      sctx->b.set_atom_dirty = (void *)si_set_atom_dirty;
      sctx->screen = sscreen; /* Easy accessing of screen/winsys. */
      sctx->is_debug = (flags & PIPE_CONTEXT_DEBUG) != 0;
      if (!si_common_context_init(&sctx->b, &sscreen->b, flags))
          goto fail;
      if (sscreen->b.info.drm_major == 3)
          sctx->b.b.get_device_reset_status = si_amdgpu_get_reset_status;
+    si_init_clear_functions(sctx);
      si_init_blit_functions(sctx);
      si_init_compute_functions(sctx);
      si_init_cp_dma_functions(sctx);
      si_init_debug_functions(sctx);
      si_init_msaa_functions(sctx);
      si_init_streamout_functions(sctx);
      if (sscreen->b.info.has_hw_decode) {
          sctx->b.b.create_video_codec = si_uvd_create_decoder;
          sctx->b.b.create_video_buffer = si_video_buffer_create;
diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h
index 751441d..820e5b2 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.h
+++ b/src/gallium/drivers/radeonsi/si_pipe.h
@@ -551,42 +551,61 @@ struct si_context {
      float            sample_locations_2x[2][2];
      float            sample_locations_4x[4][2];
      float            sample_locations_8x[8][2];
      float            sample_locations_16x[16][2];
  };
  /* cik_sdma.c */
  void cik_init_sdma_functions(struct si_context *sctx);
  /* si_blit.c */
+enum si_blitter_op /* bitmask */
+{
+    SI_SAVE_TEXTURES      = 1,
+    SI_SAVE_FRAMEBUFFER   = 2,
+    SI_SAVE_FRAGMENT_STATE = 4,
+    SI_DISABLE_RENDER_COND = 8,
+};
+
+void si_blitter_begin(struct pipe_context *ctx, enum si_blitter_op op);
+void si_blitter_end(struct pipe_context *ctx);
  void si_init_blit_functions(struct si_context *sctx);
  void si_decompress_textures(struct si_context *sctx, unsigned shader_mask);
  void si_resource_copy_region(struct pipe_context *ctx,
                   struct pipe_resource *dst,
                   unsigned dst_level,
                   unsigned dstx, unsigned dsty, unsigned dstz,
                   struct pipe_resource *src,
                   unsigned src_level,
                   const struct pipe_box *src_box);
+/* si_clear.c */
+void vi_dcc_clear_level(struct si_context *sctx,
+            struct r600_texture *rtex,
+            unsigned level, unsigned clear_value);
+void si_init_clear_functions(struct si_context *sctx);
+
  /* si_cp_dma.c */
  #define SI_CPDMA_SKIP_CHECK_CS_SPACE    (1 << 0) /* don't call need_cs_space */   #define SI_CPDMA_SKIP_SYNC_AFTER    (1 << 1) /* don't wait for DMA after the copy */   #define SI_CPDMA_SKIP_SYNC_BEFORE    (1 << 2) /* don't wait for DMA before the copy (RAW hazards) */   #define SI_CPDMA_SKIP_GFX_SYNC        (1 << 3) /* don't flush caches and don't wait for PS/CS */   #define SI_CPDMA_SKIP_BO_LIST_UPDATE    (1 << 4) /* don't update the BO list */
  #define SI_CPDMA_SKIP_ALL (SI_CPDMA_SKIP_CHECK_CS_SPACE | \
                 SI_CPDMA_SKIP_SYNC_AFTER | \
                 SI_CPDMA_SKIP_SYNC_BEFORE | \
                 SI_CPDMA_SKIP_GFX_SYNC | \
                 SI_CPDMA_SKIP_BO_LIST_UPDATE)
+void si_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
+             uint64_t offset, uint64_t size, unsigned value,
+             enum r600_coherency coher);
  void si_copy_buffer(struct si_context *sctx,
              struct pipe_resource *dst, struct pipe_resource *src,
              uint64_t dst_offset, uint64_t src_offset, unsigned size,
              unsigned user_flags);
  void cik_prefetch_TC_L2_async(struct si_context *sctx, struct pipe_resource *buf,
                    uint64_t offset, unsigned size);
  void cik_emit_prefetch_L2(struct si_context *sctx);
  void si_init_cp_dma_functions(struct si_context *sctx);
  /* si_debug.c */





--
Lerne, wie die Welt wirklich ist,
Aber vergiss niemals, wie sie sein sollte.
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