panfrost: Always write reloaded tiles when making CRC data valid

If CRC data is currently invalid and the current batch will make it
valid, write even clean tiles to make sure CRC data is updated.

Fixes: 8ba2f9f6985 ("panfrost: Create a blitter library to replace the existing preload helpers")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10566>

diff --git a/src/panfrost/lib/pan_blitter.c b/src/panfrost/lib/pan_blitter.c
index 0e1e7de..a4ecd63 100644 (file)
--- a/src/panfrost/lib/pan_blitter.c
+++ b/src/panfrost/lib/pan_blitter.c
@@ -911,7 +911,7 @@ pan_preload_emit_dcd(struct pan_pool *pool,
                      struct pan_fb_info *fb, bool zs,
                      mali_ptr coordinates,
                      mali_ptr tsd, mali_ptr rsd,
-                     void *out)
+                     void *out, bool always_write)
 {
         pan_pack(out, DRAW, cfg) {
                 cfg.four_components_per_vertex = true;
@@ -929,7 +929,7 @@ pan_preload_emit_dcd(struct pan_pool *pool,
                         /* Tiles updated by blit shaders are still considered
                          * clean (separate for colour and Z/S), allowing us to
                          * suppress unnecessary writeback */
-                        cfg.clean_fragment_write = true;
+                        cfg.clean_fragment_write = !always_write;
                 } else {
                         pan_preload_emit_midgard_sampler(pool, &cfg);
                         cfg.texture_descriptor_is_64b = true;
@@ -966,7 +966,8 @@ pan_preload_emit_midgard_tiler_job(struct pan_pool *desc_pool,
                 panfrost_pool_alloc_desc(desc_pool, MIDGARD_TILER_JOB);
 
         pan_preload_emit_dcd(desc_pool, fb, zs, coords, tsd, rsd,
-                             pan_section_ptr(job.cpu, MIDGARD_TILER_JOB, DRAW));
+                             pan_section_ptr(job.cpu, MIDGARD_TILER_JOB, DRAW),
+                             false);
 
         pan_section_pack(job.cpu, MIDGARD_TILER_JOB, PRIMITIVE, cfg) {
                 cfg.draw_mode = MALI_DRAW_MODE_TRIANGLE_STRIP;
@@ -994,13 +995,32 @@ pan_preload_emit_bifrost_pre_frame_dcd(struct pan_pool *desc_pool,
                                        mali_ptr coords, mali_ptr rsd,
                                        mali_ptr tsd)
 {
+        struct panfrost_device *dev = desc_pool->dev;
+
         unsigned dcd_idx = zs ? 0 : 1;
         pan_preload_fb_bifrost_alloc_pre_post_dcds(desc_pool, fb);
         assert(fb->bifrost.pre_post.dcds.cpu);
         void *dcd = fb->bifrost.pre_post.dcds.cpu +
                     (dcd_idx * (MALI_DRAW_LENGTH + MALI_DRAW_PADDING_LENGTH));
 
-        pan_preload_emit_dcd(desc_pool, fb, zs, coords, tsd, rsd, dcd);
+        int crc_rt = pan_select_crc_rt(dev, fb);
+
+        bool always_write = false;
+
+        /* If CRC data is currently invalid and this batch will make it valid,
+         * write even clean tiles to make sure CRC data is updated. */
+        if (crc_rt >= 0) {
+                unsigned level = fb->rts[crc_rt].view->first_level;
+                bool valid = fb->rts[crc_rt].state->slices[level].crc_valid;
+                bool full = !fb->extent.minx && !fb->extent.miny &&
+                        fb->extent.maxx == (fb->width - 1) &&
+                        fb->extent.maxy == (fb->height - 1);
+
+                if (full && !valid)
+                        always_write = true;
+        }
+
+        pan_preload_emit_dcd(desc_pool, fb, zs, coords, tsd, rsd, dcd, always_write);
         if (zs) {
                 enum pipe_format fmt = fb->zs.view.zs->image->layout.format;
                 bool always = false;
@@ -1029,6 +1049,7 @@ pan_preload_emit_bifrost_pre_frame_dcd(struct pan_pool *desc_pool,
                         MALI_PRE_POST_FRAME_SHADER_MODE_INTERSECT;
         } else {
                 fb->bifrost.pre_post.modes[dcd_idx] =
+                        always_write ? MALI_PRE_POST_FRAME_SHADER_MODE_ALWAYS :
                         MALI_PRE_POST_FRAME_SHADER_MODE_INTERSECT;
         }
 }