[Mesa-dev] [PATCH 5/5] i965 gen7: add support for layered color renderbuffers
Paul Berry
stereotype441 at gmail.com
Tue May 21 07:55:44 PDT 2013
On 20 May 2013 20:13, Chia-I Wu <olvaffe at gmail.com> wrote:
> On Tue, May 21, 2013 at 5:08 AM, Paul Berry <stereotype441 at gmail.com>
> wrote:
> > On 17 May 2013 21:44, Chia-I Wu <olvaffe at gmail.com> wrote:
> >>
> >> On Sat, May 18, 2013 at 10:11 AM, Jordan Justen
> >> <jordan.l.justen at intel.com> wrote:
> >> > Rather than pointing the surface_state directly at a single
> >> > sub-image of the texture for rendering, we now point the
> >> > surface_state at the top level of the texture, and configure
> >> > the surface_state as needed based on this.
> >> >
> >> > We now also need to stop setting the FORCE_ZERO_RTAINDEX bit
> >> > in the clip date so render target array values other than zero
> >> > will be used.
> >> >
> >> > Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
> >> > ---
> >> > src/mesa/drivers/dri/i965/brw_defines.h | 2 +
> >> > src/mesa/drivers/dri/i965/gen7_clip_state.c | 3 +-
> >> > src/mesa/drivers/dri/i965/gen7_wm_surface_state.c | 63
> >> > +++++++++++++++------
> >> > 3 files changed, 48 insertions(+), 20 deletions(-)
> >> >
> >> > diff --git a/src/mesa/drivers/dri/i965/brw_defines.h
> >> > b/src/mesa/drivers/dri/i965/brw_defines.h
> >> > index fedd78c..d61151f 100644
> >> > --- a/src/mesa/drivers/dri/i965/brw_defines.h
> >> > +++ b/src/mesa/drivers/dri/i965/brw_defines.h
> >> > @@ -539,6 +539,8 @@
> >> > #define GEN7_SURFACE_MULTISAMPLECOUNT_8 (3 << 3)
> >> > #define GEN7_SURFACE_MSFMT_MSS (0 << 6)
> >> > #define GEN7_SURFACE_MSFMT_DEPTH_STENCIL (1 << 6)
> >> > +#define GEN7_SURFACE_MIN_ARRAY_ELEMENT_SHIFT 18
> >> > +#define GEN7_SURFACE_RENDER_TARGET_VIEW_EXTENT_SHIFT 7
> >> >
> >> > /* Surface state DW5 */
> >> > #define BRW_SURFACE_X_OFFSET_SHIFT 25
> >> > diff --git a/src/mesa/drivers/dri/i965/gen7_clip_state.c
> >> > b/src/mesa/drivers/dri/i965/gen7_clip_state.c
> >> > index 29a5ed5..1256f32 100644
> >> > --- a/src/mesa/drivers/dri/i965/gen7_clip_state.c
> >> > +++ b/src/mesa/drivers/dri/i965/gen7_clip_state.c
> >> > @@ -107,8 +107,7 @@ upload_clip_state(struct brw_context *brw)
> >> > GEN6_CLIP_XY_TEST |
> >> > dw2);
> >> > OUT_BATCH(U_FIXED(0.125, 3) << GEN6_CLIP_MIN_POINT_WIDTH_SHIFT |
> >> > - U_FIXED(255.875, 3) << GEN6_CLIP_MAX_POINT_WIDTH_SHIFT |
> >> > - GEN6_CLIP_FORCE_ZERO_RTAINDEX);
> >> > + U_FIXED(255.875, 3) << GEN6_CLIP_MAX_POINT_WIDTH_SHIFT);
> >> > ADVANCE_BATCH();
> >> > }
> >> >
> >> > diff --git a/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
> >> > b/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
> >> > index 6c01545..5f15eff 100644
> >> > --- a/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
> >> > +++ b/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c
> >> > @@ -23,6 +23,7 @@
> >> > #include "main/mtypes.h"
> >> > #include "main/blend.h"
> >> > #include "main/samplerobj.h"
> >> > +#include "main/texformat.h"
> >> > #include "program/prog_parameter.h"
> >> >
> >> > #include "intel_mipmap_tree.h"
> >> > @@ -529,12 +530,13 @@ gen7_update_renderbuffer_surface(struct
> >> > brw_context *brw,
> >> > struct gl_context *ctx = &intel->ctx;
> >> > struct intel_renderbuffer *irb = intel_renderbuffer(rb);
> >> > struct intel_region *region = irb->mt->region;
> >> > - uint32_t tile_x, tile_y;
> >> > uint32_t format;
> >> > /* _NEW_BUFFERS */
> >> > gl_format rb_format = _mesa_get_render_format(ctx,
> >> > intel_rb_format(irb));
> >> > -
> >> > - assert(!layered);
> >> > + uint32_t surftype;
> >> > + bool is_array = false;
> >> > + int depth = rb->Depth > 0 ? rb->Depth - 1 : 0;
> >> > + int min_array_element = 0;
> >> >
> >> > uint32_t *surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
> >> > 8 * 4, 32,
> >> > &brw->wm.surf_offset[unit]);
> >> > @@ -550,7 +552,23 @@ gen7_update_renderbuffer_surface(struct
> brw_context
> >> > *brw,
> >> > __FUNCTION__, _mesa_get_format_name(rb_format));
> >> > }
> >> >
> >> > - surf[0] = BRW_SURFACE_2D << BRW_SURFACE_TYPE_SHIFT |
> >> > + if (rb->TexImage) {
> >> > + surftype =
> translate_tex_target(rb->TexImage->TexObject->Target);
> >> > + is_array =
> >> > _mesa_tex_target_is_array(rb->TexImage->TexObject->Target);
> >> > + if (rb->TexImage->TexObject->Target ==
> GL_TEXTURE_CUBE_MAP_ARRAY)
> >> > {
> >> > + assert(rb->Depth > 0);
> >> > + surftype = BRW_SURFACE_2D;
> >> > + depth = (6 * (depth + 1)) - 1;
> >> > + } else if (rb->TexImage->TexObject->Target ==
> >> > GL_TEXTURE_CUBE_MAP) {
> >> > + surftype = BRW_SURFACE_2D;
> >> > + depth = 5;
> >> > + is_array = true;
> >> > + }
> >> > + } else {
> >> > + surftype = BRW_SURFACE_2D;
> >> > + }
> >> > +
> >> > + surf[0] = surftype << BRW_SURFACE_TYPE_SHIFT |
> >> > format << BRW_SURFACE_FORMAT_SHIFT |
> >> > (irb->mt->array_spacing_lod0 ? GEN7_SURFACE_ARYSPC_LOD0
> >> > :
> GEN7_SURFACE_ARYSPC_FULL) |
> >> > @@ -561,24 +579,33 @@ gen7_update_renderbuffer_surface(struct
> >> > brw_context *brw,
> >> > if (irb->mt->align_w == 8)
> >> > surf[0] |= GEN7_SURFACE_HALIGN_8;
> >> >
> >> > - /* reloc */
> >> > - surf[1] = intel_renderbuffer_tile_offsets(irb, &tile_x, &tile_y) +
> >> > - region->bo->offset; /* reloc */
> >> > + if (is_array) {
> >> > + surf[0] |= GEN7_SURFACE_IS_ARRAY;
> >> > + }
> >> > +
> >> > + if (!layered) {
> >> > + if (irb->mt->num_samples > 1) {
> >> > + min_array_element = irb->mt_layer / irb->mt->num_samples;
> >> > + } else {
> >> > + min_array_element = irb->mt_layer;
> >> > + }
> >> > + }
> >> > +
> >> > + surf[1] = region->bo->offset;
> >> >
> >> > assert(brw->has_surface_tile_offset);
> >> > - /* Note that the low bits of these fields are missing, so
> >> > - * there's the possibility of getting in trouble.
> >> > - */
> >> > - assert(tile_x % 4 == 0);
> >> > - assert(tile_y % 2 == 0);
> >> > - surf[5] = SET_FIELD(tile_x / 4, BRW_SURFACE_X_OFFSET) |
> >> > - SET_FIELD(tile_y / 2, BRW_SURFACE_Y_OFFSET);
> >> >
> >> > - surf[2] = SET_FIELD(rb->Width - 1, GEN7_SURFACE_WIDTH) |
> >> > - SET_FIELD(rb->Height - 1, GEN7_SURFACE_HEIGHT);
> >> > - surf[3] = region->pitch - 1;
> >> > + surf[5] = irb->mt_level;
> >> The PRM says that the LOD field of all render targets and the depth
> >> buffer must be the same. Is this going to violate that?
> > Based on some discussions with the hardware architects, and the fact that
> > this patch series doesn't cause any piglit regressions, we believe that
> is
> > not actually a hard requirement.
> Great to know that. Does this mean that things like
> brw_workaround_depthstencil_alignment() will not be needed once
> 3DSTATE_DEPTH_BUFFER points to the entire mipmap tree instead of a
> single level/layer?
>
Yes, my hope is that most of the madness of
brw_workaround_depthstencil_alignment() will be able to go away. A small
amount of madness will remain, to cover the case where the client binds the
depth buffer to a different level/layer than the stencil buffer, but that's
a much more rare situation.
>
> >
> >>
> >>
> >> > +
> >> > + surf[2] = SET_FIELD(irb->mt->logical_width0 - 1,
> GEN7_SURFACE_WIDTH)
> >> > |
> >> > + SET_FIELD(irb->mt->logical_height0 - 1,
> >> > GEN7_SURFACE_HEIGHT);
> >> > +
> >> > + surf[3] = (depth << BRW_SURFACE_DEPTH_SHIFT) |
> >> > + (region->pitch - 1);
> >> >
> >> > - surf[4] = gen7_surface_msaa_bits(irb->mt->num_samples,
> >> > irb->mt->msaa_layout);
> >> > + surf[4] = gen7_surface_msaa_bits(irb->mt->num_samples,
> >> > irb->mt->msaa_layout) |
> >> > + min_array_element <<
> GEN7_SURFACE_MIN_ARRAY_ELEMENT_SHIFT
> >> > |
> >> > + depth << GEN7_SURFACE_RENDER_TARGET_VIEW_EXTENT_SHIFT;
> >> >
> >> > if (irb->mt->msaa_layout == INTEL_MSAA_LAYOUT_CMS) {
> >> > gen7_set_surface_mcs_info(brw, surf, brw->wm.surf_offset[unit],
> >> > --
> >> > 1.7.10.4
> >> >
> >> > _______________________________________________
> >> > mesa-dev mailing list
> >> > mesa-dev at lists.freedesktop.org
> >> > http://lists.freedesktop.org/mailman/listinfo/mesa-dev
> >>
> >>
> >>
> >> --
> >> olv at LunarG.com
> >> _______________________________________________
> >> mesa-dev mailing list
> >> mesa-dev at lists.freedesktop.org
> >> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
> >
> >
>
>
>
> --
> olv at LunarG.com
>
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