#include "isl_priv.h"
bool
-gen4_choose_msaa_layout(const struct isl_device *dev,
- const struct isl_surf_init_info *info,
- enum isl_tiling tiling,
- enum isl_msaa_layout *msaa_layout)
+isl_gen4_choose_msaa_layout(const struct isl_device *dev,
+ const struct isl_surf_init_info *info,
+ enum isl_tiling tiling,
+ enum isl_msaa_layout *msaa_layout)
{
/* Gen4 and Gen5 do not support MSAA */
assert(info->samples >= 1);
}
void
-gen4_choose_image_alignment_el(const struct isl_device *dev,
- const struct isl_surf_init_info *restrict info,
- enum isl_tiling tiling,
- enum isl_msaa_layout msaa_layout,
- struct isl_extent3d *image_align_el)
+isl_gen4_filter_tiling(const struct isl_device *dev,
+ const struct isl_surf_init_info *restrict info,
+ isl_tiling_flags_t *flags)
+{
+ /* Gen4-5 only support linear, X, and Y-tiling. */
+ *flags &= (ISL_TILING_LINEAR_BIT | ISL_TILING_X_BIT | ISL_TILING_Y0_BIT);
+
+ if (isl_surf_usage_is_depth_or_stencil(info->usage)) {
+ assert(!ISL_DEV_USE_SEPARATE_STENCIL(dev));
+
+ /* From the g35 PRM Vol. 2, 3DSTATE_DEPTH_BUFFER::Tile Walk:
+ *
+ * "The Depth Buffer, if tiled, must use Y-Major tiling"
+ */
+ *flags &= (ISL_TILING_LINEAR_BIT | ISL_TILING_Y0_BIT);
+ }
+
+ if (info->usage & (ISL_SURF_USAGE_DISPLAY_ROTATE_90_BIT |
+ ISL_SURF_USAGE_DISPLAY_ROTATE_180_BIT |
+ ISL_SURF_USAGE_DISPLAY_ROTATE_270_BIT)) {
+ assert(*flags & ISL_SURF_USAGE_DISPLAY_BIT);
+ isl_finishme("%s:%s: handle rotated display surfaces",
+ __FILE__, __func__);
+ }
+
+ if (info->usage & (ISL_SURF_USAGE_DISPLAY_FLIP_X_BIT |
+ ISL_SURF_USAGE_DISPLAY_FLIP_Y_BIT)) {
+ assert(*flags & ISL_SURF_USAGE_DISPLAY_BIT);
+ isl_finishme("%s:%s: handle flipped display surfaces",
+ __FILE__, __func__);
+ }
+
+ if (info->usage & ISL_SURF_USAGE_DISPLAY_BIT) {
+ /* Before Skylake, the display engine does not accept Y */
+ *flags &= (ISL_TILING_LINEAR_BIT | ISL_TILING_X_BIT);
+ }
+
+ assert(info->samples == 1);
+
+ /* From the g35 PRM, Volume 1, 11.5.5, "Per-Stream Tile Format Support":
+ *
+ * "NOTE: 128BPE Format Color buffer ( render target ) MUST be either
+ * TileX or Linear."
+ *
+ * This is required all the way up to Sandy Bridge.
+ */
+ if (isl_format_get_layout(info->format)->bpb >= 128)
+ *flags &= ~ISL_TILING_Y0_BIT;
+}
+
+void
+isl_gen4_choose_image_alignment_el(const struct isl_device *dev,
+ const struct isl_surf_init_info *restrict info,
+ enum isl_tiling tiling,
+ enum isl_dim_layout dim_layout,
+ enum isl_msaa_layout msaa_layout,
+ struct isl_extent3d *image_align_el)
{
assert(info->samples == 1);
assert(msaa_layout == ISL_MSAA_LAYOUT_NONE);