radeonsi: add sampling of 4:2:2 subsampled textures

This makes 4:2:2 video surfaces work in VDPAU.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeon/r600_texture.c b/src/gallium/drivers/radeon/r600_texture.c
index 3a37465..a20b0c8 100644 (file)
--- a/src/gallium/drivers/radeon/r600_texture.c
+++ b/src/gallium/drivers/radeon/r600_texture.c
@@ -737,9 +737,8 @@ static unsigned r600_choose_tiling(struct r600_common_screen *rscreen,
         * Compressed textures must always be tiled. */
        if (!(templ->flags & R600_RESOURCE_FLAG_FORCE_TILING) &&
            !util_format_is_compressed(templ->format)) {
-               /* Tiling doesn't work with the 422 (SUBSAMPLED) formats on R600-Cayman. */
-               if (rscreen->chip_class <= CAYMAN &&
-                   desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED)
+               /* Tiling doesn't work with the 422 (SUBSAMPLED) formats on R600+. */
+               if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED)
                        return RADEON_SURF_MODE_LINEAR_ALIGNED;
 
                /* Cursors are linear on SI.

diff --git a/src/gallium/drivers/radeonsi/si_blit.c b/src/gallium/drivers/radeonsi/si_blit.c
index e02615f..8c3e136 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_blit.c
+++ b/src/gallium/drivers/radeonsi/si_blit.c
@@ -548,46 +548,63 @@ static void si_resource_copy_region(struct pipe_context *ctx,
                dstx = util_format_get_nblocksx(orig_info[1].format, dstx);
                dsty = util_format_get_nblocksy(orig_info[1].format, dsty);
        } else if (!util_blitter_is_copy_supported(sctx->blitter, dst, src)) {
-               unsigned blocksize = util_format_get_blocksize(src->format);
-
-               switch (blocksize) {
-               case 1:
-                       si_change_format(src, src_level, &orig_info[0],
-                                        PIPE_FORMAT_R8_UNORM);
-                       si_change_format(dst, dst_level, &orig_info[1],
-                                        PIPE_FORMAT_R8_UNORM);
-                       break;
-               case 2:
-                       si_change_format(src, src_level, &orig_info[0],
-                                        PIPE_FORMAT_R8G8_UNORM);
-                       si_change_format(dst, dst_level, &orig_info[1],
-                                        PIPE_FORMAT_R8G8_UNORM);
-                       break;
-               case 4:
-                       si_change_format(src, src_level, &orig_info[0],
-                                        PIPE_FORMAT_R8G8B8A8_UNORM);
-                       si_change_format(dst, dst_level, &orig_info[1],
-                                        PIPE_FORMAT_R8G8B8A8_UNORM);
-                       break;
-               case 8:
-                       si_change_format(src, src_level, &orig_info[0],
-                                        PIPE_FORMAT_R16G16B16A16_UINT);
-                       si_change_format(dst, dst_level, &orig_info[1],
-                                        PIPE_FORMAT_R16G16B16A16_UINT);
-                       break;
-               case 16:
+               if (util_format_is_subsampled_422(src->format)) {
+                       /* XXX untested */
                        si_change_format(src, src_level, &orig_info[0],
-                                        PIPE_FORMAT_R32G32B32A32_UINT);
+                                        PIPE_FORMAT_R8G8B8A8_UINT);
                        si_change_format(dst, dst_level, &orig_info[1],
-                                        PIPE_FORMAT_R32G32B32A32_UINT);
-                       break;
-               default:
-                       fprintf(stderr, "Unhandled format %s with blocksize %u\n",
-                               util_format_short_name(src->format), blocksize);
-                       assert(0);
+                                        PIPE_FORMAT_R8G8B8A8_UINT);
+
+                       sbox = *src_box;
+                       sbox.x = util_format_get_nblocksx(orig_info[0].format, src_box->x);
+                       sbox.width = util_format_get_nblocksx(orig_info[0].format, src_box->width);
+                       src_box = &sbox;
+                       dstx = util_format_get_nblocksx(orig_info[1].format, dstx);
+
+                       restore_orig[0] = TRUE;
+                       restore_orig[1] = TRUE;
+               } else {
+                       unsigned blocksize = util_format_get_blocksize(src->format);
+
+                       switch (blocksize) {
+                       case 1:
+                               si_change_format(src, src_level, &orig_info[0],
+                                               PIPE_FORMAT_R8_UNORM);
+                               si_change_format(dst, dst_level, &orig_info[1],
+                                               PIPE_FORMAT_R8_UNORM);
+                               break;
+                       case 2:
+                               si_change_format(src, src_level, &orig_info[0],
+                                               PIPE_FORMAT_R8G8_UNORM);
+                               si_change_format(dst, dst_level, &orig_info[1],
+                                               PIPE_FORMAT_R8G8_UNORM);
+                               break;
+                       case 4:
+                               si_change_format(src, src_level, &orig_info[0],
+                                               PIPE_FORMAT_R8G8B8A8_UNORM);
+                               si_change_format(dst, dst_level, &orig_info[1],
+                                               PIPE_FORMAT_R8G8B8A8_UNORM);
+                               break;
+                       case 8:
+                               si_change_format(src, src_level, &orig_info[0],
+                                               PIPE_FORMAT_R16G16B16A16_UINT);
+                               si_change_format(dst, dst_level, &orig_info[1],
+                                               PIPE_FORMAT_R16G16B16A16_UINT);
+                               break;
+                       case 16:
+                               si_change_format(src, src_level, &orig_info[0],
+                                               PIPE_FORMAT_R32G32B32A32_UINT);
+                               si_change_format(dst, dst_level, &orig_info[1],
+                                               PIPE_FORMAT_R32G32B32A32_UINT);
+                               break;
+                       default:
+                               fprintf(stderr, "Unhandled format %s with blocksize %u\n",
+                                       util_format_short_name(src->format), blocksize);
+                               assert(0);
+                       }
+                       restore_orig[0] = TRUE;
+                       restore_orig[1] = TRUE;
                }
-               restore_orig[0] = TRUE;
-               restore_orig[1] = TRUE;
        }
 
        /* Initialize the surface. */

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 19d2b55..cbd51ad 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -1102,6 +1102,19 @@ static uint32_t si_translate_texformat(struct pipe_screen *screen,
                }
        }
 
+       if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED) {
+               switch (format) {
+               case PIPE_FORMAT_R8G8_B8G8_UNORM:
+               case PIPE_FORMAT_G8R8_B8R8_UNORM:
+                       return V_008F14_IMG_DATA_FORMAT_GB_GR;
+               case PIPE_FORMAT_G8R8_G8B8_UNORM:
+               case PIPE_FORMAT_R8G8_R8B8_UNORM:
+                       return V_008F14_IMG_DATA_FORMAT_BG_RG;
+               default:
+                       goto out_unknown;
+               }
+       }
+
        if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC) {
 
                if (!enable_s3tc)
@@ -2481,6 +2494,8 @@ static struct pipe_sampler_view *si_create_sampler_view(struct pipe_context *ctx
                                        num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
                                        break;
                                }
+                       } else if (desc->layout == UTIL_FORMAT_LAYOUT_SUBSAMPLED) {
+                               num_format = V_008F14_IMG_NUM_FORMAT_UNORM;
                        } else {
                                num_format = V_008F14_IMG_NUM_FORMAT_FLOAT;
                        }