[Mesa-dev] [PATCH 43/64] i965/blorp: Add a generic ISL-based surface state emit path
Jason Ekstrand
jason at jlekstrand.net
Sat Jun 11 16:02:58 UTC 2016
---
src/mesa/drivers/dri/i965/brw_blorp.c | 146 ++++++++++++++++++++++++++++++++++
src/mesa/drivers/dri/i965/brw_blorp.h | 6 ++
2 files changed, 152 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_blorp.c b/src/mesa/drivers/dri/i965/brw_blorp.c
index 9590968..1089a49 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.c
+++ b/src/mesa/drivers/dri/i965/brw_blorp.c
@@ -240,6 +240,152 @@ brw_blorp_compile_nir_shader(struct brw_context *brw, struct nir_shader *nir,
return program;
}
+static enum isl_msaa_layout
+get_isl_msaa_layout(enum intel_msaa_layout layout)
+{
+ switch (layout) {
+ case INTEL_MSAA_LAYOUT_NONE:
+ return ISL_MSAA_LAYOUT_NONE;
+ case INTEL_MSAA_LAYOUT_IMS:
+ return ISL_MSAA_LAYOUT_INTERLEAVED;
+ case INTEL_MSAA_LAYOUT_UMS:
+ case INTEL_MSAA_LAYOUT_CMS:
+ return ISL_MSAA_LAYOUT_ARRAY;
+ default:
+ unreachable("Invalid MSAA layout");
+ }
+}
+
+struct surface_state_info {
+ unsigned num_dwords;
+ unsigned ss_align; /* Required alignment of RENDER_SURFACE_STATE in bytes */
+ unsigned reloc_dw;
+ unsigned aux_reloc_dw;
+ unsigned tex_mocs;
+ unsigned rb_mocs;
+};
+
+static const struct surface_state_info surface_state_infos[] = {
+ [6] = {6, 32, 1, 0},
+ [7] = {8, 32, 1, 6, GEN7_MOCS_L3, GEN7_MOCS_L3},
+ [8] = {13, 64, 8, 10, BDW_MOCS_WB, BDW_MOCS_PTE},
+ [9] = {16, 64, 8, 10, SKL_MOCS_WB, SKL_MOCS_PTE},
+};
+
+uint32_t
+brw_blorp_emit_surface_state(struct brw_context *brw,
+ const struct brw_blorp_surface_info *surface,
+ uint32_t read_domains, uint32_t write_domain,
+ bool is_render_target)
+{
+ /* TODO: This should go in the context */
+ struct isl_device isl_dev;
+ isl_device_init(&isl_dev, brw->intelScreen->devinfo, brw->has_swizzling);
+
+ const struct surface_state_info ss_info = surface_state_infos[brw->gen];
+
+ struct isl_surf surf;
+ intel_miptree_get_isl_surf(brw, surface->mt, &surf);
+
+ /* Stomp surface dimensions and tiling (if needed) with info from blorp */
+ surf.dim = ISL_SURF_DIM_2D;
+ surf.dim_layout = ISL_DIM_LAYOUT_GEN4_2D;
+ surf.msaa_layout = get_isl_msaa_layout(surface->msaa_layout);
+ surf.logical_level0_px.width = surface->width;
+ surf.logical_level0_px.height = surface->height;
+ surf.levels = 1;
+ surf.samples = MAX2(surface->num_samples, 1);
+
+ if (brw->gen == 6 && surface->num_samples > 1) {
+ /* Since gen6 uses INTEL_MSAA_LAYOUT_IMS, width and height are measured
+ * in samples. But SURFACE_STATE wants them in pixels, so we need to
+ * divide them each by 2.
+ */
+ surf.logical_level0_px.width /= 2;
+ surf.logical_level0_px.height /= 2;
+ }
+
+ if (surface->map_stencil_as_y_tiled) {
+ /* We need to fake W-tiling with Y-tiling */
+ surf.tiling = ISL_TILING_Y0;
+ surf.row_pitch *= 2;
+ }
+
+ union isl_color_value clear_color = { .u32 = { 0, 0, 0, 0 } };
+
+ struct isl_surf *aux_surf = NULL, aux_surf_s;
+ uint64_t aux_offset;
+ if (surface->mt->mcs_mt) {
+ /* We should probably to similar stomping to above but most of the aux
+ * surf gets ignored when we fill out the surface state anyway so
+ * there's no point.
+ */
+ intel_miptree_get_ccs_isl_surf(brw, surface->mt, &aux_surf_s);
+ aux_surf = &aux_surf_s;
+ assert(surface->mt->mcs_mt->offset == 0);
+ aux_offset = surface->mt->mcs_mt->bo->offset64;
+
+ /* We only really need a clear color if we also have an auxiliary
+ * surfacae. Without one, it does nothing.
+ */
+ clear_color = intel_miptree_get_isl_clear_color(brw, surface->mt);
+ }
+
+ struct isl_view view = {
+ .format = surface->brw_surfaceformat,
+ .base_level = 0,
+ .levels = 1,
+ .base_array_layer = 0,
+ .array_len = 1,
+ .channel_select = {
+ ISL_CHANNEL_SELECT_RED,
+ ISL_CHANNEL_SELECT_GREEN,
+ ISL_CHANNEL_SELECT_BLUE,
+ ISL_CHANNEL_SELECT_ALPHA,
+ },
+ .usage = is_render_target ? ISL_SURF_USAGE_RENDER_TARGET_BIT :
+ ISL_SURF_USAGE_TEXTURE_BIT,
+ };
+
+ uint32_t offset, tile_x, tile_y;
+ offset = brw_blorp_compute_tile_offsets(surface, &tile_x, &tile_y);
+
+ uint32_t surf_offset;
+ uint32_t *dw = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE,
+ ss_info.num_dwords * 4, ss_info.ss_align,
+ &surf_offset);
+
+ const uint32_t mocs = is_render_target ? ss_info.rb_mocs : ss_info.tex_mocs;
+
+ isl_surf_fill_state(&isl_dev, dw, .surf = &surf, .view = &view,
+ .address = surface->mt->bo->offset64 + offset,
+ .aux_surf = aux_surf, .aux_address = aux_offset,
+ .mocs = mocs, .clear_color = clear_color,
+ .x_offset = tile_x, .y_offset = tile_y);
+
+ /* Emit relocation to surface contents */
+ drm_intel_bo_emit_reloc(brw->batch.bo,
+ surf_offset + ss_info.reloc_dw * 4,
+ surface->mt->bo,
+ dw[ss_info.reloc_dw] - surface->mt->bo->offset64,
+ read_domains, write_domain);
+
+ if (aux_surf) {
+ /* On gen7 and prior, the bottom 12 bits of the MCS base address are
+ * used to store other information. This should be ok, however, because
+ * surface buffer addresses are always 4K page alinged.
+ */
+ assert((aux_offset & 0xfff) == 0);
+ drm_intel_bo_emit_reloc(brw->batch.bo,
+ surf_offset + ss_info.aux_reloc_dw * 4,
+ surface->mt->mcs_mt->bo,
+ dw[ss_info.aux_reloc_dw] & 0xfff,
+ read_domains, write_domain);
+ }
+
+ return surf_offset;
+}
+
/**
* Perform a HiZ or depth resolve operation.
*
diff --git a/src/mesa/drivers/dri/i965/brw_blorp.h b/src/mesa/drivers/dri/i965/brw_blorp.h
index 7ec5875..bacdecb 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp.h
+++ b/src/mesa/drivers/dri/i965/brw_blorp.h
@@ -372,6 +372,12 @@ brw_blorp_compile_nir_shader(struct brw_context *brw, struct nir_shader *nir,
struct brw_blorp_prog_data *prog_data,
unsigned *program_size);
+uint32_t
+brw_blorp_emit_surface_state(struct brw_context *brw,
+ const struct brw_blorp_surface_info *surface,
+ uint32_t read_domains, uint32_t write_domain,
+ bool is_render_target);
+
void
gen6_blorp_init(struct brw_context *brw);
--
2.5.0.400.gff86faf
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