[Mesa-dev] [PATCH] r600g: add htile support v8

Jerome Glisse j.glisse at gmail.com
Fri Jul 13 17:20:03 PDT 2012


On Fri, Jul 13, 2012 at 8:02 PM, Marek Olšák <maraeo at gmail.com> wrote:
> Hi Jerome,
>
> I have a lot of remarks.
>
> 1) The DB decompression fix (where you update DB_RENDER_CONTROL) could
> be in a separate patch.
>
> 2) The fix with EARLY_Z_THEN_LATE_Z (in update_dual_export) could also
> be in a separate patch.

> 3) r600_context::use_hyperz is set to FALSE by default, why? If the
> fast clear works and there are no piglit regressions, then please
> enable it. If the fast clear doesn't work reliably, please put it in a
> branch. Merging non-working code on purpose is a very bad idea.

Again it does work, but it has a non null probability to lockup gpu,
probability depends on the gpu and application, but it can be quite
high. So again code works but given it leads to lockup i dont want it
to enable it by default. And I do intend to merge this.


> 4) The depth clear value should be per-layer in addition to being
> per-level. Otherwise, cubemaps and texture arrays would be broken.

Yeah overlook that case

> 5) You added r600_db_misc_state::resummarize, but it's unused. Please
> pay attention to detail.

It's left over.

> Also there are additional comments inline below.
>
> On Fri, Jul 13, 2012 at 8:30 PM,  <j.glisse at gmail.com> wrote:
>> From: Jerome Glisse <jglisse at redhat.com>
>>
>> htile is used for HiZ and HiS support and fast Z/S clears.
>> This commit just adds the htile setup and Fast Z clear.
>> We don't take full advantage of HiS with that patch.
>>
>> v2 really use fast clear, still random issue with some tiles
>>    need to try more flush combination, fix depth/stencil
>>    texture decompression
>> v3 fix random issue on r6xx/r7xx
>> v4 rebase on top of lastest mesa, disable CB export when clearing
>>    htile surface to avoid wasting bandwidth
>> v5 resummarize htile surface when uploading z value. Fix z/stencil
>>    decompression, the custom blitter with custom dsa is no longer
>>    needed.
>> v6 Reorganize render control/override update mecanism, fixing more
>>    issues in the process.
>> v7 Add nop after depth surface base update to work around some htile
>>    flushing issue. For htile to 8x8 on r6xx/r7xx as other combination
>>    have issue. Do not enable hyperz when flushing/uncompressing
>>    depth buffer.
>> v8 Fix htile surface, preload and prefetch setup. Only set preload
>>    and prefetch on htile surface clear like fglrx. Record depth
>>    clear value per level. Support several level for the htile
>>    surface. First depth clear can't be a fast clear.
>>
>> Signed-off-by: Pierre-Eric Pelloux-Prayer <pelloux at gmail.com>
>> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>> Signed-off-by: Jerome Glisse <jglisse at redhat.com>
>> ---
>>  src/gallium/drivers/r600/evergreen_hw_context.c |    8 +-
>>  src/gallium/drivers/r600/evergreen_state.c      |   97 ++++++++++++-----
>>  src/gallium/drivers/r600/evergreend.h           |    4 +
>>  src/gallium/drivers/r600/r600_blit.c            |   37 +++++--
>>  src/gallium/drivers/r600/r600_hw_context.c      |   25 +++++
>>  src/gallium/drivers/r600/r600_pipe.c            |    1 +
>>  src/gallium/drivers/r600/r600_pipe.h            |   13 ++-
>>  src/gallium/drivers/r600/r600_resource.h        |    7 ++
>>  src/gallium/drivers/r600/r600_state.c           |  133 ++++++++++++++++++++---
>>  src/gallium/drivers/r600/r600_state_common.c    |    6 +
>>  src/gallium/drivers/r600/r600_texture.c         |   98 +++++++++++++++++
>>  src/gallium/drivers/r600/r600d.h                |    6 +
>>  12 files changed, 376 insertions(+), 59 deletions(-)
>>
>> diff --git a/src/gallium/drivers/r600/evergreen_hw_context.c b/src/gallium/drivers/r600/evergreen_hw_context.c
>> index 53d4582..546c884 100644
>> --- a/src/gallium/drivers/r600/evergreen_hw_context.c
>> +++ b/src/gallium/drivers/r600/evergreen_hw_context.c
>> @@ -43,7 +43,6 @@ static const struct r600_reg evergreen_ctl_const_list[] = {
>>  };
>>
>>  static const struct r600_reg evergreen_context_reg_list[] = {
>> -       {R_028000_DB_RENDER_CONTROL, 0, 0},
>>         {R_028008_DB_DEPTH_VIEW, 0, 0},
>>         {R_028010_DB_RENDER_OVERRIDE2, 0, 0},
>>         {GROUP_FORCE_NEW_BLOCK, 0, 0},
>> @@ -63,6 +62,9 @@ static const struct r600_reg evergreen_context_reg_list[] = {
>>         {GROUP_FORCE_NEW_BLOCK, 0, 0},
>>         {R_028058_DB_DEPTH_SIZE, 0, 0},
>>         {R_02805C_DB_DEPTH_SLICE, 0, 0},
>> +       {R_02802C_DB_DEPTH_CLEAR, 0, 0},
>> +       {R_028ABC_DB_HTILE_SURFACE, 0, 0},
>> +       {R_028AC8_DB_PRELOAD_CONTROL, 0, 0},
>>         {R_028204_PA_SC_WINDOW_SCISSOR_TL, 0, 0},
>>         {R_028208_PA_SC_WINDOW_SCISSOR_BR, 0, 0},
>>         {R_028234_PA_SU_HARDWARE_SCREEN_OFFSET, 0, 0},
>> @@ -301,7 +303,6 @@ static const struct r600_reg evergreen_context_reg_list[] = {
>>  };
>>
>>  static const struct r600_reg cayman_context_reg_list[] = {
>> -       {R_028000_DB_RENDER_CONTROL, 0, 0},
>>         {R_028008_DB_DEPTH_VIEW, 0, 0},
>>         {R_028010_DB_RENDER_OVERRIDE2, 0, 0},
>>         {GROUP_FORCE_NEW_BLOCK, 0, 0},
>> @@ -321,6 +322,9 @@ static const struct r600_reg cayman_context_reg_list[] = {
>>         {GROUP_FORCE_NEW_BLOCK, 0, 0},
>>         {R_028058_DB_DEPTH_SIZE, 0, 0},
>>         {R_02805C_DB_DEPTH_SLICE, 0, 0},
>> +       {R_02802C_DB_DEPTH_CLEAR, 0, 0},
>> +       {R_028ABC_DB_HTILE_SURFACE, 0, 0},
>> +       {R_028AC8_DB_PRELOAD_CONTROL, 0, 0},
>>         {R_028204_PA_SC_WINDOW_SCISSOR_TL, 0, 0},
>>         {R_028208_PA_SC_WINDOW_SCISSOR_BR, 0, 0},
>>         {R_028234_PA_SU_HARDWARE_SCREEN_OFFSET, 0, 0},
>> diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
>> index 404df02..9cadaa1 100644
>> --- a/src/gallium/drivers/r600/evergreen_state.c
>> +++ b/src/gallium/drivers/r600/evergreen_state.c
>> @@ -710,13 +710,15 @@ static void *evergreen_create_blend_state(struct pipe_context *ctx,
>>         }
>>         blend->cb_target_mask = target_mask;
>>
>> -       if (target_mask)
>> +       if (target_mask) {
>>                 color_control |= S_028808_MODE(V_028808_CB_NORMAL);
>> -       else
>> +       } else {
>>                 color_control |= S_028808_MODE(V_028808_CB_DISABLE);
>> +       }
>>
>>         r600_pipe_state_add_reg(rstate, R_028808_CB_COLOR_CONTROL,
>>                                 color_control);
>> +
>>         /* only have dual source on MRT0 */
>>         blend->dual_src_blend = util_blend_state_is_dual(state, 0);
>>         for (int i = 0; i < 8; i++) {
>> @@ -759,7 +761,6 @@ static void *evergreen_create_dsa_state(struct pipe_context *ctx,
>>         struct r600_context *rctx = (struct r600_context *)ctx;
>>         struct r600_pipe_dsa *dsa = CALLOC_STRUCT(r600_pipe_dsa);
>>         unsigned db_depth_control, alpha_test_control, alpha_ref;
>> -       unsigned db_render_control;
>>         struct r600_pipe_state *rstate;
>>
>>         if (dsa == NULL) {
>> @@ -807,9 +808,7 @@ static void *evergreen_create_dsa_state(struct pipe_context *ctx,
>>         dsa->alpha_ref = alpha_ref;
>>
>>         /* misc */
>> -       db_render_control = 0;
>>         r600_pipe_state_add_reg(rstate, R_028800_DB_DEPTH_CONTROL, db_depth_control);
>> -       r600_pipe_state_add_reg(rstate, R_028000_DB_RENDER_CONTROL, db_render_control);
>>         return rstate;
>>  }
>>
>> @@ -1671,6 +1670,28 @@ static void evergreen_db(struct r600_context *rctx, struct r600_pipe_state *rsta
>>                 }
>>         }
>>
>> +       /* hyperz */
>> +       if (rtex->hyperz) {
>> +               uint64_t htile_offset = rtex->hyperz->surface.level[level].offset;
>> +
>> +               if (!rctx->db_misc_state.hyperz) {
>> +                       rctx->db_misc_state.hyperz = true;
>> +                       r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> +               }
>> +               z_info |= S_028040_TILE_SURFACE_ENABLE(1);
>> +               r600_pipe_state_add_reg_bo(rstate, R_028014_DB_HTILE_DATA_BASE,
>> +                                          htile_offset >> 8, &rtex->hyperz->resource,
>> +                                          RADEON_USAGE_READWRITE);
>> +               /* FORCE_OFF means HiZ/HiS are determined by DB_SHADER_CONTROL */
>> +               r600_pipe_state_add_reg(rstate, R_028ABC_DB_HTILE_SURFACE, rtex->db_htile_surface);
>> +               r600_pipe_state_add_reg(rstate, R_028AC8_DB_PRELOAD_CONTROL, rtex->db_preload_control);
>> +       } else {
>> +               if (rctx->db_misc_state.hyperz) {
>> +                       rctx->db_misc_state.hyperz = FALSE;
>> +                       r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> +               }
>> +       }
>> +
>>         r600_pipe_state_add_reg_bo(rstate, R_028040_DB_Z_INFO, z_info,
>>                                 &rtex->resource, RADEON_USAGE_READWRITE);
>>         r600_pipe_state_add_reg(rstate, R_028058_DB_DEPTH_SIZE,
>> @@ -1750,19 +1771,47 @@ static void evergreen_emit_db_misc_state(struct r600_context *rctx, struct r600_
>>  {
>>         struct radeon_winsys_cs *cs = rctx->cs;
>>         struct r600_db_misc_state *a = (struct r600_db_misc_state*)atom;
>> +       unsigned db_render_override = 0;
>> +       unsigned db_render_control = 0;
>>         unsigned db_count_control = 0;
>> -       unsigned db_render_override =
>> -               S_02800C_FORCE_HIZ_ENABLE(V_02800C_FORCE_DISABLE) |
>> -               S_02800C_FORCE_HIS_ENABLE0(V_02800C_FORCE_DISABLE) |
>> -               S_02800C_FORCE_HIS_ENABLE1(V_02800C_FORCE_DISABLE);
>> -
>> +       unsigned cliprect_rule = 0xffff;
>> +
>> +       db_render_override = S_02800C_FORCE_HIS_ENABLE0(V_02800C_FORCE_DISABLE) |
>> +                            S_02800C_FORCE_HIS_ENABLE1(V_02800C_FORCE_DISABLE);
>> +       if (a->hyperz && !a->flush_depthstencil_through_cb) {
>> +               /* FORCE_OFF means HiZ/HiS are determined by DB_SHADER_CONTROL */
>> +               db_render_override |= S_02800C_FORCE_HIZ_ENABLE(V_02800C_FORCE_OFF);
>> +               if (a->clear_depthstencil) {
>> +                       db_render_control |= S_028000_DEPTH_CLEAR_ENABLE(1);
>> +                       /* need to disable cliprect for fast clear */
>> +                       cliprect_rule = 0;
>> +               }
>> +       } else {
>> +               db_render_override |= S_02800C_FORCE_HIZ_ENABLE(V_02800C_FORCE_DISABLE);
>> +       }
>>         if (a->occlusion_query_enabled) {
>>                 db_count_control |= S_028004_PERFECT_ZPASS_COUNTS(1);
>>                 db_render_override |= S_02800C_NOOP_CULL_DISABLE(1);
>>         }
>> +       if (a->flush_depthstencil_through_cb) {
>> +               db_render_control |= S_028000_DEPTH_COPY_ENABLE(1) |
>> +                                    S_028000_STENCIL_COPY_ENABLE(1) |
>> +                                    S_028000_COPY_CENTROID(1);
>> +       }
>>
>> +       if (rctx->framebuffer.zsbuf) {
>> +               struct r600_resource_texture *rtex;
>> +               unsigned level = rctx->framebuffer.zsbuf->u.tex.level;
>> +
>> +               rtex = (struct r600_resource_texture*)rctx->framebuffer.zsbuf->texture;
>> +               r600_write_context_reg_seq(cs, R_02802C_DB_DEPTH_CLEAR, 1);
>> +               r600_write_value(cs, fui((float)rtex->depth_clear_value[level]));
>> +       }
>
> This code depends on the zbuffer, but you don't call r600_atom_dirty
> when the zbuffer is changed. This should be fixed in
> set_framebuffer_state. Same for r600_state.c.

atom_dirty is call inside set_db only if there is hyperz and it's only
usefull with hyperz so it's fine. I think i need to make atom dirty
unconditional in set_db.

>> +       r600_write_context_reg(cs, R_028000_DB_RENDER_CONTROL, db_render_control);
>>         r600_write_context_reg(cs, R_028004_DB_COUNT_CONTROL, db_count_control);
>>         r600_write_context_reg(cs, R_02800C_DB_RENDER_OVERRIDE, db_render_override);
>> +       r600_write_context_reg_seq(cs, R_02820C_PA_SC_CLIPRECT_RULE, 1);
>> +       r600_write_value(cs, cliprect_rule);
>
> You could just use r600_write_context_reg here.

k

>>  }
>>
>>  static void evergreen_emit_vertex_buffers(struct r600_context *rctx, struct r600_atom *atom)
>> @@ -2033,19 +2082,15 @@ static void cayman_init_atom_start_cs(struct r600_context *rctx)
>>         r600_store_value(cb, ~0); /* CM_R_028C38_PA_SC_AA_MASK_X0Y0_X1Y0 */
>>         r600_store_value(cb, ~0); /* CM_R_028C3C_PA_SC_AA_MASK_X0Y1_X1Y1 */
>>
>> -       r600_store_context_reg_seq(cb, R_028028_DB_STENCIL_CLEAR, 2);
>> -       r600_store_value(cb, 0); /* R_028028_DB_STENCIL_CLEAR */
>> -       r600_store_value(cb, 0x3F800000); /* R_02802C_DB_DEPTH_CLEAR */
>> +       r600_store_context_reg_seq(cb, R_009830_DB_DEBUG, 3);
>> +       r600_store_value(cb, 0); /* R_009830_DB_DEBUG */
>> +       r600_store_value(cb, 0); /* R_009834_DB_DEBUG2 */
>> +       r600_store_value(cb, 0); /* R_009838_DB_DEBUG3 */
>> +       r600_store_config_reg(cb, R_009854_DB_WATERMARKS, 0x00420204);
>>
>>         r600_store_context_reg(cb, R_0286DC_SPI_FOG_CNTL, 0);
>>
>> -       r600_store_context_reg_seq(cb, R_028AC0_DB_SRESULTS_COMPARE_STATE0, 3);
>> -       r600_store_value(cb, 0); /* R_028AC0_DB_SRESULTS_COMPARE_STATE0 */
>> -       r600_store_value(cb, 0); /* R_028AC4_DB_SRESULTS_COMPARE_STATE1 */
>> -       r600_store_value(cb, 0); /* R_028AC8_DB_PRELOAD_CONTROL */
>> -
>>         r600_store_context_reg(cb, R_028200_PA_SC_WINDOW_OFFSET, 0);
>> -       r600_store_context_reg(cb, R_02820C_PA_SC_CLIPRECT_RULE, 0xFFFF);
>>
>>         r600_store_context_reg_seq(cb, R_0282D0_PA_SC_VPORT_ZMIN_0, 2);
>>         r600_store_value(cb, 0); /* R_0282D0_PA_SC_VPORT_ZMIN_0 */
>> @@ -2520,7 +2565,6 @@ void evergreen_init_atom_start_cs(struct r600_context *rctx)
>>         r600_store_value(cb, 0x3F800000); /* R_02802C_DB_DEPTH_CLEAR */
>>
>>         r600_store_context_reg(cb, R_028200_PA_SC_WINDOW_OFFSET, 0);
>> -       r600_store_context_reg(cb, R_02820C_PA_SC_CLIPRECT_RULE, 0xFFFF);
>>         r600_store_context_reg(cb, R_028230_PA_SC_EDGERULE, 0xAAAAAAAA);
>>
>>         r600_store_context_reg_seq(cb, R_0282D0_PA_SC_VPORT_ZMIN_0, 2);
>> @@ -2531,10 +2575,9 @@ void evergreen_init_atom_start_cs(struct r600_context *rctx)
>>         r600_store_context_reg(cb, R_028818_PA_CL_VTE_CNTL, 0x0000043F);
>>         r600_store_context_reg(cb, R_028820_PA_CL_NANINF_CNTL, 0);
>>
>> -       r600_store_context_reg_seq(cb, R_028AC0_DB_SRESULTS_COMPARE_STATE0, 3);
>> +       r600_store_context_reg_seq(cb, R_028AC0_DB_SRESULTS_COMPARE_STATE0, 2);
>>         r600_store_value(cb, 0); /* R_028AC0_DB_SRESULTS_COMPARE_STATE0 */
>>         r600_store_value(cb, 0); /* R_028AC4_DB_SRESULTS_COMPARE_STATE1 */
>> -       r600_store_value(cb, 0); /* R_028AC8_DB_PRELOAD_CONTROL */
>>
>>         r600_store_context_reg(cb, R_028B70_DB_ALPHA_TO_MASK, 0x0000AA00);
>>
>> @@ -2634,7 +2677,7 @@ void evergreen_pipe_shader_ps(struct pipe_context *ctx, struct r600_pipe_shader
>>
>>         rstate->nregs = 0;
>>
>> -       db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
>> +       db_shader_control = 0;
>>         for (i = 0; i < rshader->ninput; i++) {
>>                 /* evergreen NUM_INTERP only contains values interpolated into the LDS,
>>                    POSITION goes via GPRs from the SC so isn't counted */
>> @@ -2840,11 +2883,6 @@ void *evergreen_create_db_flush_dsa(struct r600_context *rctx)
>>         memset(&dsa, 0, sizeof(dsa));
>>
>>         rstate = rctx->context.create_depth_stencil_alpha_state(&rctx->context, &dsa);
>> -       r600_pipe_state_add_reg(rstate,
>> -                               R_028000_DB_RENDER_CONTROL,
>> -                               S_028000_DEPTH_COPY_ENABLE(1) |
>> -                               S_028000_STENCIL_COPY_ENABLE(1) |
>> -                               S_028000_COPY_CENTROID(1));
>>         /* Don't set the 'is_flush' flag in r600_pipe_dsa, evergreen doesn't need it. */
>>         return rstate;
>>  }
>> @@ -2853,14 +2891,13 @@ void evergreen_update_dual_export_state(struct r600_context * rctx)
>>  {
>>         unsigned dual_export = rctx->export_16bpc && rctx->nr_cbufs &&
>>                         !rctx->ps_shader->current->ps_depth_export;
>> -
>>         unsigned db_source_format = dual_export ? V_02880C_EXPORT_DB_TWO :
>>                         V_02880C_EXPORT_DB_FULL;
>> -
>>         unsigned db_shader_control = rctx->ps_shader->current->db_shader_control |
>>                         S_02880C_DUAL_EXPORT_ENABLE(dual_export) |
>>                         S_02880C_DB_SOURCE_FORMAT(db_source_format);
>>
>> +       db_shader_control |= S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
>>         if (db_shader_control != rctx->db_shader_control) {
>>                 struct r600_pipe_state rstate;
>>
>> diff --git a/src/gallium/drivers/r600/evergreend.h b/src/gallium/drivers/r600/evergreend.h
>> index 6c4873c..1ac5944 100644
>> --- a/src/gallium/drivers/r600/evergreend.h
>> +++ b/src/gallium/drivers/r600/evergreend.h
>> @@ -1589,6 +1589,10 @@
>>  #define   S_028008_SLICE_MAX(x)                        (((x) & 0x7FF) << 13)
>>  #define   G_028008_SLICE_MAX(x)                        (((x) >> 13) & 0x7FF)
>>  #define   C_028008_SLICE_MAX                           0xFF001FFF
>> +#define R_009830_DB_DEBUG                            0x00009830
>> +#define R_009834_DB_DEBUG2                           0x00009834
>> +#define R_009838_DB_DEBUG3                           0x00009838
>> +#define R_009854_DB_WATERMARKS                       0x00009854
>>  #define R_02800C_DB_RENDER_OVERRIDE                  0x0002800C
>>  #define   V_02800C_FORCE_OFF                         0
>>  #define   V_02800C_FORCE_ENABLE                      1
>> diff --git a/src/gallium/drivers/r600/r600_blit.c b/src/gallium/drivers/r600/r600_blit.c
>> index fff48a4..4286cca 100644
>> --- a/src/gallium/drivers/r600/r600_blit.c
>> +++ b/src/gallium/drivers/r600/r600_blit.c
>> @@ -24,6 +24,7 @@
>>  #include "util/u_surface.h"
>>  #include "util/u_blitter.h"
>>  #include "util/u_format.h"
>> +#include "r600d.h"
>>
>>  enum r600_blitter_op /* bitmask */
>>  {
>> @@ -132,8 +133,7 @@ void r600_blit_uncompress_depth(struct pipe_context *ctx,
>>             rctx->family == CHIP_RV620 || rctx->family == CHIP_RV635)
>>                 depth = 0.0f;
>>
>> -       if (rctx->chip_class <= R700 &&
>> -           !rctx->db_misc_state.flush_depthstencil_through_cb) {
>> +       if (!rctx->db_misc_state.flush_depthstencil_through_cb) {
>>                 /* Enable decompression in DB_RENDER_CONTROL */
>>                 rctx->db_misc_state.flush_depthstencil_through_cb = true;
>>                 r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> @@ -179,11 +179,9 @@ void r600_blit_uncompress_depth(struct pipe_context *ctx,
>>                 }
>>         }
>>
>> -       if (rctx->chip_class <= R700) {
>> -               /* Disable decompression in DB_RENDER_CONTROL */
>> -               rctx->db_misc_state.flush_depthstencil_through_cb = false;
>> -               r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> -       }
>> +       /* reenable compression in DB_RENDER_CONTROL */
>> +       rctx->db_misc_state.flush_depthstencil_through_cb = false;
>> +       r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>>  }
>>
>>  static void r600_flush_depth_textures(struct r600_context *rctx,
>> @@ -223,6 +221,31 @@ static void r600_clear(struct pipe_context *ctx, unsigned buffers,
>>         struct r600_context *rctx = (struct r600_context *)ctx;
>>         struct pipe_framebuffer_state *fb = &rctx->framebuffer;
>>
>> +       /* if hyperz enabled just clear hyperz */
>> +       if (fb->zsbuf && (buffers & PIPE_CLEAR_DEPTHSTENCIL)) {
>> +               struct r600_resource_texture *rtex;
>> +               unsigned level = fb->zsbuf->u.tex.level;
>> +
>> +               rtex = (struct r600_resource_texture*)fb->zsbuf->texture;
>> +               if (rtex->hyperz) {
>> +                       /* set clear value, as we use R600_CLEAR_SURFACE
>> +                        * the framebuffer state will be reset with proper
>> +                        * depth clear value
>> +                        */
>
> This comment is wrong. We don't use R600_CLEAR_SURFACE in this function.

left over

>> +                       rtex->depth_clear_value[level] = depth;
>> +                       if (buffers & PIPE_CLEAR_DEPTH) {
>> +                               rctx->db_misc_state.hyperz = true;
>> +                               if (rtex->htile_initialized[level]) {
>> +                                       rctx->db_misc_state.clear_depthstencil = true;
>> +                               } else {
>> +                                       rtex->htile_initialized[level] = true;
>> +                                       rctx->db_misc_state.db_htile_surface_mask = 0xf;
>
> I don't like this 0xf magic value. Please use proper definitions from r600d.h.
>

Using define will make it a very big line.

>> +                               }
>> +                               r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> +                       }
>> +               }
>> +       }
>> +
>>         r600_blitter_begin(ctx, R600_CLEAR);
>>         util_blitter_clear(rctx->blitter, fb->width, fb->height,
>>                            fb->nr_cbufs, buffers, fb->nr_cbufs ? fb->cbufs[0]->format : PIPE_FORMAT_NONE,
>> diff --git a/src/gallium/drivers/r600/r600_hw_context.c b/src/gallium/drivers/r600/r600_hw_context.c
>> index b236069..d09e7d8 100644
>> --- a/src/gallium/drivers/r600/r600_hw_context.c
>> +++ b/src/gallium/drivers/r600/r600_hw_context.c
>> @@ -180,6 +180,27 @@ static void r600_init_block(struct r600_context *ctx,
>>                     (ctx->family < CHIP_RV770) && reg[i+j].flags & REG_FLAG_RV6XX_SBU) {
>>                         block->pm4[block->pm4_ndwords++] = PKT3(PKT3_SURFACE_BASE_UPDATE, 0, 0);
>>                         block->pm4[block->pm4_ndwords++] = reg[i+j].sbu_flags;
>> +                       if (reg[i+j].sbu_flags & SURFACE_BASE_UPDATE_DEPTH) {
>> +                               /* to work around flushing issue in htile surface */
>> +                               block->pm4[block->pm4_ndwords++] = PKT3(PKT3_NOP, 16, 0);
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                               block->pm4[block->pm4_ndwords++] = 0xcafedead;
>> +                       }
>>                 }
>>         }
>>         /* check that we stay in limit */
>> @@ -364,7 +385,11 @@ static const struct r600_reg r600_context_reg_list[] = {
>>         {GROUP_FORCE_NEW_BLOCK, 0, 0},
>>         {R_028010_DB_DEPTH_INFO, REG_FLAG_NEED_BO, 0},
>>         {R_028A6C_VGT_GS_OUT_PRIM_TYPE, 0, 0},
>> +       {R_02802C_DB_DEPTH_CLEAR, 0, 0},
>> +       {GROUP_FORCE_NEW_BLOCK, 0, 0},
>> +       {R_028014_DB_HTILE_DATA_BASE, REG_FLAG_NEED_BO, 0},
>>         {R_028D24_DB_HTILE_SURFACE, 0, 0},
>> +       {R_028D30_DB_PRELOAD_CONTROL, 0, 0},
>>         {R_028D34_DB_PREFETCH_LIMIT, 0, 0},
>>         {R_028204_PA_SC_WINDOW_SCISSOR_TL, 0, 0},
>>         {R_028208_PA_SC_WINDOW_SCISSOR_BR, 0, 0},
>> diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
>> index a0a8a58..1639eab 100644
>> --- a/src/gallium/drivers/r600/r600_pipe.c
>> +++ b/src/gallium/drivers/r600/r600_pipe.c
>> @@ -952,6 +952,7 @@ struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
>>
>>         rscreen->use_surface_alloc = debug_get_bool_option("R600_SURF", TRUE);
>>         rscreen->glsl_feature_level = debug_get_bool_option("R600_GLSL130", TRUE) ? 130 : 120;
>> +       rscreen->use_hyperz = debug_get_bool_option("R600_HYPERZ", FALSE);
>>
>>         rscreen->global_pool = compute_memory_pool_new(0, rscreen);
>>
>> diff --git a/src/gallium/drivers/r600/r600_pipe.h b/src/gallium/drivers/r600/r600_pipe.h
>> index 877088b..1b66e03 100644
>> --- a/src/gallium/drivers/r600/r600_pipe.h
>> +++ b/src/gallium/drivers/r600/r600_pipe.h
>> @@ -77,9 +77,13 @@ struct r600_surface_sync_cmd {
>>  };
>>
>>  struct r600_db_misc_state {
>> -       struct r600_atom atom;
>> -       bool occlusion_query_enabled;
>> -       bool flush_depthstencil_through_cb;
>> +       struct r600_atom        atom;
>> +       unsigned                db_htile_surface_mask;
>> +       bool                    occlusion_query_enabled;
>> +       bool                    flush_depthstencil_through_cb;
>> +       bool                    clear_depthstencil;
>> +       bool                    hyperz;
>> +       bool                    resummarize;
>>  };
>>
>>  struct r600_cb_misc_state {
>> @@ -144,6 +148,7 @@ struct r600_screen {
>>         struct r600_pipe_fences         fences;
>>
>>         bool                            use_surface_alloc;
>> +       bool                            use_hyperz;
>>         int                             glsl_feature_level;
>>
>>         /*for compute global memory binding, we allocate stuff here, instead of
>> @@ -183,7 +188,7 @@ struct r600_pipe_dsa {
>>         unsigned                        alpha_ref;
>>         ubyte                           valuemask[2];
>>         ubyte                           writemask[2];
>> -       unsigned                        sx_alpha_test_control;
>> +       unsigned                        sx_alpha_test_control;
>>  };
>>
>>  struct r600_vertex_element
>> diff --git a/src/gallium/drivers/r600/r600_resource.h b/src/gallium/drivers/r600/r600_resource.h
>> index a7570c7..59ec025 100644
>> --- a/src/gallium/drivers/r600/r600_resource.h
>> +++ b/src/gallium/drivers/r600/r600_resource.h
>> @@ -64,6 +64,13 @@ struct r600_resource_texture {
>>         struct r600_resource_texture    *flushed_depth_texture;
>>         boolean                         is_flushing_texture;
>>         struct radeon_surface           surface;
>> +       unsigned                        db_prefetch_limit;
>> +       unsigned                        db_htile_surface;
>> +       unsigned                        db_preload_control;
>> +       struct r600_resource_texture    *hyperz;
>> +       float                           depth_clear_value[PIPE_MAX_TEXTURE_LEVELS];
>> +       /* first depth clear initialize the htile buffer */
>> +       bool                            htile_initialized[PIPE_MAX_TEXTURE_LEVELS];
>>  };
>>
>>  #define R600_TEX_IS_TILED(tex, level) ((tex)->array_mode[level] != V_038000_ARRAY_LINEAR_GENERAL && (tex)->array_mode[level] != V_038000_ARRAY_LINEAR_ALIGNED)
>> diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
>> index 6c0c0fe..1341254 100644
>> --- a/src/gallium/drivers/r600/r600_state.c
>> +++ b/src/gallium/drivers/r600/r600_state.c
>> @@ -1581,6 +1581,7 @@ static void r600_db(struct r600_context *rctx, struct r600_pipe_state *rstate,
>>         struct r600_resource_texture *rtex;
>>         struct r600_surface *surf;
>>         unsigned level, pitch, slice, format, offset, array_mode;
>> +       unsigned db_depth_info;
>>
>>         if (state->zsbuf == NULL)
>>                 return;
>> @@ -1625,6 +1626,29 @@ static void r600_db(struct r600_context *rctx, struct r600_pipe_state *rstate,
>>
>>         format = r600_translate_dbformat(state->zsbuf->format);
>>         assert(format != ~0);
>> +       db_depth_info = S_028010_ARRAY_MODE(array_mode) | S_028010_FORMAT(format);
>> +
>> +       /* hyperz */
>> +       if (rtex->hyperz) {
>> +               uint64_t htile_offset = rtex->hyperz->surface.level[level].offset;
>> +
>> +               if (!rctx->db_misc_state.hyperz) {
>> +                       rctx->db_misc_state.hyperz = true;
>> +                       rctx->db_misc_state.db_htile_surface_mask = 0xffffffff;
>> +                       r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> +               }
>> +               db_depth_info |= S_028010_TILE_SURFACE_ENABLE(1);
>> +               r600_pipe_state_add_reg_bo(rstate, R_028014_DB_HTILE_DATA_BASE,
>> +                                          htile_offset >> 8, &rtex->hyperz->resource,
>> +                                          RADEON_USAGE_READWRITE);
>> +               r600_pipe_state_add_reg(rstate, R_028D30_DB_PRELOAD_CONTROL, rtex->db_preload_control);
>> +               r600_pipe_state_add_reg(rstate, R_028D34_DB_PREFETCH_LIMIT, rtex->db_prefetch_limit);
>> +       } else {
>> +               if (rctx->db_misc_state.hyperz) {
>> +                       rctx->db_misc_state.hyperz = FALSE;
>> +                       r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> +               }
>> +       }
>>
>>         r600_pipe_state_add_reg_bo(rstate, R_02800C_DB_DEPTH_BASE,
>>                                 offset >> 8, &rtex->resource, RADEON_USAGE_READWRITE);
>> @@ -1638,8 +1662,8 @@ static void r600_db(struct r600_context *rctx, struct r600_pipe_state *rstate,
>>                                         S_028004_SLICE_MAX(state->zsbuf->u.tex.last_layer));
>>         }
>>         r600_pipe_state_add_reg_bo(rstate, R_028010_DB_DEPTH_INFO,
>> -                               S_028010_ARRAY_MODE(array_mode) | S_028010_FORMAT(format),
>> -                               &rtex->resource, RADEON_USAGE_READWRITE);
>> +                                  db_depth_info,
>> +                                  &rtex->resource, RADEON_USAGE_READWRITE);
>>         r600_pipe_state_add_reg(rstate, R_028D34_DB_PREFETCH_LIMIT,
>>                                 (surf->aligned_height / 8) - 1);
>>  }
>> @@ -1723,10 +1747,34 @@ static void r600_emit_db_misc_state(struct r600_context *rctx, struct r600_atom
>>         struct radeon_winsys_cs *cs = rctx->cs;
>>         struct r600_db_misc_state *a = (struct r600_db_misc_state*)atom;
>>         unsigned db_render_control = 0;
>> -       unsigned db_render_override =
>> -               S_028D10_FORCE_HIZ_ENABLE(V_028D10_FORCE_DISABLE) |
>> -               S_028D10_FORCE_HIS_ENABLE0(V_028D10_FORCE_DISABLE) |
>> -               S_028D10_FORCE_HIS_ENABLE1(V_028D10_FORCE_DISABLE);
>> +       unsigned db_render_override = 0;
>> +       unsigned cliprect_rule = 0xffff;
>> +       unsigned db_htile_surface = 0;
>> +       struct r600_resource_texture *rtex;
>> +
>> +       if (a->hyperz && rctx->framebuffer.zsbuf) {
>> +               rtex = (struct r600_resource_texture*)rctx->framebuffer.zsbuf->texture;
>> +
>> +               db_htile_surface = rtex->db_htile_surface;
>> +               db_htile_surface &= rctx->db_misc_state.db_htile_surface_mask;
>> +               /* further htile surface without preload */
>> +               rctx->db_misc_state.db_htile_surface_mask = 0xf;
>
> Again, please use proper definitions from r600d.h in place of 0xf.
>
>> +       }
>> +
>> +       db_render_override |= S_028D10_FORCE_HIS_ENABLE0(V_028D10_FORCE_DISABLE) |
>> +                             S_028D10_FORCE_HIS_ENABLE1(V_028D10_FORCE_DISABLE);
>> +       if (a->hyperz) {
>> +               /* FORCE_OFF means HiZ/HiS are determined by DB_SHADER_CONTROL */
>> +               db_render_override |= S_028D10_FORCE_HIZ_ENABLE(V_028D10_FORCE_OFF);
>> +               if (a->clear_depthstencil) {
>> +                       db_render_control |= S_028D0C_DEPTH_CLEAR_ENABLE(1);
>> +                       db_render_control |= S_028D0C_ZPASS_INCREMENT_DISABLE(1);
>> +                       /* need to disable cliprect for fast clear */
>> +                       cliprect_rule = 0;
>> +               }
>> +       } else {
>> +               db_render_override |= S_028D10_FORCE_HIZ_ENABLE(V_028D10_FORCE_DISABLE);
>> +       }
>>
>>         if (a->occlusion_query_enabled) {
>>                 if (rctx->chip_class >= R700) {
>> @@ -1740,9 +1788,22 @@ static void r600_emit_db_misc_state(struct r600_context *rctx, struct r600_atom
>>                                      S_028D0C_COPY_CENTROID(1);
>>         }
>>
>> +       if (rctx->framebuffer.zsbuf) {
>> +               struct r600_resource_texture *rtex;
>> +               unsigned level = rctx->framebuffer.zsbuf->u.tex.level;
>> +
>> +               rtex = (struct r600_resource_texture*)rctx->framebuffer.zsbuf->texture;
>> +               r600_write_context_reg_seq(cs, R_02802C_DB_DEPTH_CLEAR, 1);
>> +               r600_write_value(cs, fui((float)rtex->depth_clear_value[level]));
>> +       }
>>         r600_write_context_reg_seq(cs, R_028D0C_DB_RENDER_CONTROL, 2);
>>         r600_write_value(cs, db_render_control); /* R_028D0C_DB_RENDER_CONTROL */
>>         r600_write_value(cs, db_render_override); /* R_028D10_DB_RENDER_OVERRIDE */
>> +       r600_write_context_reg_seq(cs, R_02820C_PA_SC_CLIPRECT_RULE, 1);
>> +       r600_write_value(cs, cliprect_rule);
>> +
>> +       r600_write_context_reg_seq(cs, R_028D24_DB_HTILE_SURFACE, 1);
>> +       r600_write_value(cs, db_htile_surface);
>
> Again, you could use r600_write_context_reg here.
>
>>  }
>>
>>  static void r600_emit_vertex_buffers(struct r600_context *rctx, struct r600_atom *atom)
>> @@ -1954,7 +2015,7 @@ void r600_init_atom_start_cs(struct r600_context *rctx)
>>         int num_es_stack_entries;
>>         enum radeon_family family;
>>         struct r600_command_buffer *cb = &rctx->start_cs_cmd;
>> -       uint32_t tmp;
>> +       uint32_t tmp, db_watermarks, db_debug;
>>         unsigned i;
>>
>>         r600_init_command_buffer(cb, 256, EMIT_EARLY);
>> @@ -1974,6 +2035,7 @@ void r600_init_atom_start_cs(struct r600_context *rctx)
>>         vs_prio = 1;
>>         gs_prio = 2;
>>         es_prio = 3;
>> +
>>         switch (family) {
>>         case CHIP_R600:
>>                 num_ps_gprs = 192;
>> @@ -2140,15 +2202,55 @@ void r600_init_atom_start_cs(struct r600_context *rctx)
>>
>>         if (rctx->chip_class >= R700) {
>>                 r600_store_config_reg(cb, R_008D8C_SQ_DYN_GPR_CNTL_PS_FLUSH_REQ, 0x00004000);
>> -               r600_store_config_reg(cb, R_009830_DB_DEBUG, 0);
>> -               r600_store_config_reg(cb, R_009838_DB_WATERMARKS, 0x00420204);
>>                 r600_store_context_reg(cb, R_0286C8_SPI_THREAD_GROUPING, 0);
>>         } else {
>>                 r600_store_config_reg(cb, R_008D8C_SQ_DYN_GPR_CNTL_PS_FLUSH_REQ, 0);
>> -               r600_store_config_reg(cb, R_009830_DB_DEBUG, 0x82000000);
>> -               r600_store_config_reg(cb, R_009838_DB_WATERMARKS, 0x01020204);
>>                 r600_store_context_reg(cb, R_0286C8_SPI_THREAD_GROUPING, 1);
>>         }
>> +
>> +       /* FIXME db_watermarks & db_debug need adjustment for MSAA */
>> +       switch (family) {
>> +       case CHIP_R600:
>> +               db_debug = 0x82200000;
>> +               db_watermarks = 0x01020204;
>> +               break;
>> +       case CHIP_RV630:
>> +               db_debug = 0x92000000;
>> +               db_watermarks = 0x01020204;
>> +               break;
>> +       case CHIP_RV635:
>> +               db_debug = 0x82000000;
>> +               db_watermarks = 0x01020204;
>> +               break;
>> +       case CHIP_RV610:
>> +               db_debug = 0x82000000;
>> +               db_watermarks = 0x01020204;
>> +               break;
>> +       case CHIP_RV620:
>> +       default:
>> +               db_debug = 0x82000000;
>> +               db_watermarks = 0x01020204;
>> +               break;
>> +       case CHIP_RS780:
>> +       case CHIP_RS880:
>> +               db_debug = 0x88000000;
>> +               db_watermarks = 0x81020204;
>> +               break;
>> +       case CHIP_RV670:
>> +               db_debug = 0x80000000;
>> +               db_watermarks = 0x01020204;
>> +               break;
>> +       case CHIP_RV770:
>> +       case CHIP_RV730:
>> +       case CHIP_RV740:
>> +       case CHIP_RV710:
>> +               db_debug = 0x00000000;
>> +               db_watermarks = 0x00420204;
>> +               break;
>> +       }
>> +       r600_store_config_reg(cb, R_009830_DB_DEBUG, db_debug);
>> +       r600_store_config_reg(cb, R_009838_DB_WATERMARKS, db_watermarks);
>> +
>>         r600_store_context_reg_seq(cb, R_0288A8_SQ_ESGS_RING_ITEMSIZE, 9);
>>         r600_store_value(cb, 0); /* R_0288A8_SQ_ESGS_RING_ITEMSIZE */
>>         r600_store_value(cb, 0); /* R_0288AC_SQ_GSVS_RING_ITEMSIZE */
>> @@ -2192,9 +2294,8 @@ void r600_init_atom_start_cs(struct r600_context *rctx)
>>
>>         r600_store_ctl_const(cb, R_03CFF0_SQ_VTX_BASE_VTX_LOC, 0);
>>
>> -       r600_store_context_reg_seq(cb, R_028028_DB_STENCIL_CLEAR, 2);
>> +       r600_store_context_reg_seq(cb, R_028028_DB_STENCIL_CLEAR, 1);
>>         r600_store_value(cb, 0); /* R_028028_DB_STENCIL_CLEAR */
>> -       r600_store_value(cb, 0x3F800000); /* R_02802C_DB_DEPTH_CLEAR */
>>
>>         r600_store_context_reg_seq(cb, R_0286DC_SPI_FOG_CNTL, 3);
>>         r600_store_value(cb, 0); /* R_0286DC_SPI_FOG_CNTL */
>> @@ -2234,7 +2335,6 @@ void r600_init_atom_start_cs(struct r600_context *rctx)
>>         }
>>
>>         r600_store_context_reg(cb, R_028200_PA_SC_WINDOW_OFFSET, 0);
>> -       r600_store_context_reg(cb, R_02820C_PA_SC_CLIPRECT_RULE, 0xFFFF);
>>
>>         if (rctx->chip_class >= R700) {
>>                 r600_store_context_reg(cb, R_028230_PA_SC_EDGERULE, 0xAAAAAAAA);
>> @@ -2317,7 +2417,7 @@ void r600_pipe_shader_ps(struct pipe_context *ctx, struct r600_pipe_shader *shad
>>                                 tmp);
>>         }
>>
>> -       db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
>> +       db_shader_control = 0;
>>         for (i = 0; i < rshader->noutput; i++) {
>>                 if (rshader->output[i].name == TGSI_SEMANTIC_POSITION)
>>                         z_export = 1;
>> @@ -2478,13 +2578,14 @@ void *r600_create_db_flush_dsa(struct r600_context *rctx)
>>         return rctx->context.create_depth_stencil_alpha_state(&rctx->context, &dsa);
>>  }
>>
>> -void r600_update_dual_export_state(struct r600_context * rctx)
>> +void r600_update_dual_export_state(struct r600_context *rctx)
>>  {
>>         unsigned dual_export = rctx->export_16bpc && rctx->nr_cbufs &&
>>                                !rctx->ps_shader->current->ps_depth_export;
>>         unsigned db_shader_control = rctx->ps_shader->current->db_shader_control |
>>                                      S_02880C_DUAL_EXPORT_ENABLE(dual_export);
>>
>> +       db_shader_control |= S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
>>         if (db_shader_control != rctx->db_shader_control) {
>>                 struct r600_pipe_state rstate;
>>
>> diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
>> index d952220..59efdb9 100644
>> --- a/src/gallium/drivers/r600/r600_state_common.c
>> +++ b/src/gallium/drivers/r600/r600_state_common.c
>> @@ -1004,6 +1004,12 @@ void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *dinfo)
>>                 rtex->dirty_db_mask |= 1 << surf->u.tex.level;
>>         }
>>
>> +       /* clear hyperz */
>> +       if (rctx->db_misc_state.clear_depthstencil) {
>> +               rctx->db_misc_state.clear_depthstencil = false;
>> +               r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
>> +       }
>> +
>
> Why did you add this code into draw_vbo? This looks like it should be
> at the end of r600_clear.
>
>>         pipe_resource_reference(&ib.buffer, NULL);
>>  }
>>
>> diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c
>> index d16c252..0bbddb9 100644
>> --- a/src/gallium/drivers/r600/r600_texture.c
>> +++ b/src/gallium/drivers/r600/r600_texture.c
>> @@ -471,6 +471,10 @@ static void r600_texture_destroy(struct pipe_screen *screen,
>>         if (rtex->stencil)
>>                 pipe_resource_reference((struct pipe_resource **)&rtex->stencil, NULL);
>>
>> +       if (rtex->hyperz) {
>> +               pipe_resource_reference((struct pipe_resource **)&rtex->hyperz, NULL);
>> +       }
>> +
>>         pb_reference(&resource->buf, NULL);
>>         FREE(rtex);
>>  }
>> @@ -487,6 +491,53 @@ static const struct u_resource_vtbl r600_texture_vtbl =
>>         NULL                            /* transfer_inline_write */
>>  };
>>
>> +static void r600_htile_settings(struct r600_screen *rscreen,
>> +                               struct r600_resource_texture *zbuf,
>> +                               struct radeon_surface *hsurface)
>> +{
>> +       unsigned max_pixels_per_db;
>> +       const unsigned k = 1024;
>> +       unsigned npix_x, npix_y;
>> +
>> +       npix_x = hsurface->npix_x  >> 5;
>> +       npix_y = hsurface->npix_y  >> 5;
>> +       npix_x = npix_x ? npix_x - 1 : 0;
>> +       npix_y = npix_y ? npix_y - 1 : 0;
>> +       max_pixels_per_db = (hsurface->npix_x * hsurface->npix_y * rscreen->info.r600_num_backends);
>> +       max_pixels_per_db /= (rscreen->info.r600_num_tile_pipes * 2);
>> +       zbuf->db_prefetch_limit = (hsurface->npix_y / 8);
>> +       zbuf->db_prefetch_limit = zbuf->db_prefetch_limit ? zbuf->db_prefetch_limit - 1 : 0;
>> +       zbuf->db_preload_control = S_028D30_START_X(0) | S_028D30_START_Y(0) |
>> +                                  S_028D30_MAX_X(npix_x) |
>> +                                  S_028D30_MAX_Y(npix_y);
>> +       /* force htile to always 8x8 as there is bug with 4x4, 4x8 or 8x4 configuration */
>> +       zbuf->db_htile_surface = S_028D24_HTILE_WIDTH(1) | S_028D24_HTILE_HEIGHT(1);
>> +//     zbuf->db_htile_surface |= S_028D24_PRELOAD(1);
>> +
>> +       if (max_pixels_per_db <= 64 * k) {
>> +               zbuf->db_htile_surface |= S_028D24_LINEAR(1);
>> +       } else if (max_pixels_per_db <= 512 * k) {
>> +               zbuf->db_htile_surface |= S_028D24_LINEAR(1);
>> +               zbuf->db_htile_surface |= S_028D24_FULL_CACHE(1);
>> +       } else {
>> +               zbuf->db_htile_surface |= S_028D24_FULL_CACHE(1);
>> +               if (hsurface->npix_x <= 512) {
>> +                       zbuf->db_htile_surface |= S_028D24_PREFETCH_WIDTH(16);
>> +                       zbuf->db_htile_surface |= S_028D24_PREFETCH_HEIGHT(4);
>> +               } else if (hsurface->npix_x <= 1024) {
>> +                       zbuf->db_htile_surface |= S_028D24_PREFETCH_WIDTH(16);
>> +                       zbuf->db_htile_surface |= S_028D24_PREFETCH_HEIGHT(2);
>> +               } else {
>> +                       zbuf->db_htile_surface |= S_028D24_PREFETCH_WIDTH(16);
>> +                       zbuf->db_htile_surface |= S_028D24_PREFETCH_HEIGHT(0);
>> +               }
>> +               /* r6xx, r7xx have issue with preload window, don't use it */
>> +               if (rscreen->family >= CHIP_CEDAR) {
>> +                       zbuf->db_htile_surface |= S_028D24_HTILE_USES_PRELOAD_WIN(1);
>> +               }
>> +       }
>> +}
>> +
>>  static struct r600_resource_texture *
>>  r600_texture_create_object(struct pipe_screen *screen,
>>                            const struct pipe_resource *base,
>> @@ -513,6 +564,7 @@ r600_texture_create_object(struct pipe_screen *screen,
>>         resource->b.b.screen = screen;
>>         rtex->pitch_override = pitch_in_bytes_override;
>>         rtex->real_format = base->format;
>> +       rtex->hyperz = NULL;
>>
>>         /* We must split depth and stencil into two separate buffers on Evergreen. */
>>         if ((base->bind & PIPE_BIND_DEPTH_STENCIL) &&
>> @@ -574,6 +626,52 @@ r600_texture_create_object(struct pipe_screen *screen,
>>                 }
>>         }
>>
>> +       if (!(base->flags & R600_RESOURCE_FLAG_TRANSFER) &&
>> +           util_format_is_depth_or_stencil(base->format) &&
>> +           rscreen->use_surface_alloc &&
>> +           rscreen->use_hyperz &&
>> +           rscreen->info.drm_minor >= 14 &&
>> +           base->target == PIPE_TEXTURE_2D) {
>> +               struct pipe_resource hyperz;
>> +               struct radeon_surface hsurface;
>> +
>> +               /* Allocate the hyperz buffer. */
>> +               hyperz = *base;
>> +               hyperz.format = PIPE_FORMAT_A8R8G8B8_UNORM;
>> +               hsurface = *surface;
>> +               hsurface.npix_x = rtex->surface.level[0].nblk_x * rtex->surface.blk_w;
>> +               hsurface.npix_y = rtex->surface.level[0].nblk_y * rtex->surface.blk_h;
>> +               hsurface.blk_w = 1;
>> +               hsurface.blk_h = 1;
>> +               hsurface.bpe = 4;
>> +               hsurface.flags = RADEON_SURF_CLR(hsurface.flags, MODE);
>> +               r600_htile_settings(rscreen, rtex, &hsurface);
>> +               hsurface.npix_x = align(hsurface.npix_x, 64);
>> +               hsurface.npix_y = align(hsurface.npix_y, 32);
>> +//             hsurface.npix_x = hsurface.npix_x / 8;
>> +//             hsurface.npix_y = hsurface.npix_y / 8;
>> +               hyperz.width0 = hsurface.npix_x;
>> +               hyperz.height0 = hsurface.npix_y;
>> +               hyperz.last_level = base->last_level;
>> +               hyperz.nr_samples = 1;
>> +               hyperz.bind = PIPE_BIND_RENDER_TARGET;
>> +               hyperz.flags = 0;
>> +
>> +               rtex->hyperz = r600_texture_create_object(screen, &hyperz, array_mode, 0,
>> +                                                         max_buffer_size, NULL, TRUE, &hsurface);
>> +               if (!rtex->hyperz) {
>> +                       FREE(rtex);
>> +                       return NULL;
>> +               }
>> +
>> +               /* this is ugly but it's needed so that hyperz works without
>> +                * glitch. Otherwise various tile will have wrong hyperz value.
>> +                */
>> +               for (r = 0; r <= base->last_level; r++) {
>> +                       rtex->htile_initialized[r] = false;
>> +               }
>
> rtex is calloc'd, which means the array is already initalized to false. :)
>
> Marek

left over from debugging.

Will respin with proper change

Cheers,
Jerome


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