enum gen_surface_tiling tiling;
enum ilo_image_aux_type aux;
+
+ int align_i;
+ int align_j;
};
static enum ilo_image_walk_type
}
}
+static void
+image_get_gen6_alignments(const struct ilo_dev *dev,
+ const struct ilo_image_info *info,
+ int *align_i, int *align_j)
+{
+ ILO_DEV_ASSERT(dev, 6, 6);
+
+ /*
+ * From the Sandy Bridge PRM, volume 1 part 1, page 113:
+ *
+ * "surface format align_i align_j
+ * YUV 4:2:2 formats 4 *see below
+ * BC1-5 4 4
+ * FXT1 8 4
+ * all other formats 4 *see below"
+ *
+ * "- align_j = 4 for any depth buffer
+ * - align_j = 2 for separate stencil buffer
+ * - align_j = 4 for any render target surface is multisampled (4x)
+ * - align_j = 4 for any render target surface with Surface Vertical
+ * Alignment = VALIGN_4
+ * - align_j = 2 for any render target surface with Surface Vertical
+ * Alignment = VALIGN_2
+ * - align_j = 2 for all other render target surface
+ * - align_j = 2 for any sampling engine surface with Surface Vertical
+ * Alignment = VALIGN_2
+ * - align_j = 4 for any sampling engine surface with Surface Vertical
+ * Alignment = VALIGN_4"
+ *
+ * From the Sandy Bridge PRM, volume 4 part 1, page 86:
+ *
+ * "This field (Surface Vertical Alignment) must be set to VALIGN_2 if
+ * the Surface Format is 96 bits per element (BPE)."
+ *
+ * They can be rephrased as
+ *
+ * align_i align_j
+ * compressed formats block width block height
+ * GEN6_FORMAT_R8_UINT 4 2
+ * other depth/stencil formats 4 4
+ * 4x multisampled 4 4
+ * bpp 96 4 2
+ * others 4 2 or 4
+ */
+
+ *align_i = (info->compressed) ? info->block_width : 4;
+ if (info->compressed) {
+ *align_j = info->block_height;
+ } else if (info->bind_zs) {
+ *align_j = (info->format == GEN6_FORMAT_R8_UINT) ? 2 : 4;
+ } else {
+ *align_j = (info->sample_count > 1 || info->block_size != 12) ? 4 : 2;
+ }
+}
+
+static void
+image_get_gen7_alignments(const struct ilo_dev *dev,
+ const struct ilo_image_info *info,
+ enum gen_surface_tiling tiling,
+ int *align_i, int *align_j)
+{
+ int i, j;
+
+ ILO_DEV_ASSERT(dev, 7, 8);
+
+ /*
+ * From the Ivy Bridge PRM, volume 1 part 1, page 110:
+ *
+ * "surface defined by surface format align_i align_j
+ * 3DSTATE_DEPTH_BUFFER D16_UNORM 8 4
+ * not D16_UNORM 4 4
+ * 3DSTATE_STENCIL_BUFFER N/A 8 8
+ * SURFACE_STATE BC*, ETC*, EAC* 4 4
+ * FXT1 8 4
+ * all others (set by SURFACE_STATE)"
+ *
+ * From the Ivy Bridge PRM, volume 4 part 1, page 63:
+ *
+ * "- This field (Surface Vertical Aligment) is intended to be set to
+ * VALIGN_4 if the surface was rendered as a depth buffer, for a
+ * multisampled (4x) render target, or for a multisampled (8x)
+ * render target, since these surfaces support only alignment of 4.
+ * - Use of VALIGN_4 for other surfaces is supported, but uses more
+ * memory.
+ * - This field must be set to VALIGN_4 for all tiled Y Render Target
+ * surfaces.
+ * - Value of 1 is not supported for format YCRCB_NORMAL (0x182),
+ * YCRCB_SWAPUVY (0x183), YCRCB_SWAPUV (0x18f), YCRCB_SWAPY (0x190)
+ * - If Number of Multisamples is not MULTISAMPLECOUNT_1, this field
+ * must be set to VALIGN_4."
+ * - VALIGN_4 is not supported for surface format R32G32B32_FLOAT."
+ *
+ * "- This field (Surface Horizontal Aligment) is intended to be set to
+ * HALIGN_8 only if the surface was rendered as a depth buffer with
+ * Z16 format or a stencil buffer, since these surfaces support only
+ * alignment of 8.
+ * - Use of HALIGN_8 for other surfaces is supported, but uses more
+ * memory.
+ * - This field must be set to HALIGN_4 if the Surface Format is BC*.
+ * - This field must be set to HALIGN_8 if the Surface Format is
+ * FXT1."
+ *
+ * They can be rephrased as
+ *
+ * align_i align_j
+ * compressed formats block width block height
+ * GEN6_FORMAT_R16_UNORM 8 4
+ * GEN6_FORMAT_R8_UINT 8 8
+ * other depth/stencil formats 4 4
+ * 2x or 4x multisampled 4 or 8 4
+ * tiled Y 4 or 8 4 (if rt)
+ * GEN6_FORMAT_R32G32B32_FLOAT 4 or 8 2
+ * others 4 or 8 2 or 4
+ */
+ if (info->compressed) {
+ i = info->block_width;
+ j = info->block_height;
+ } else if (info->bind_zs) {
+ switch (info->format) {
+ case GEN6_FORMAT_R16_UNORM:
+ i = 8;
+ j = 4;
+ break;
+ case GEN6_FORMAT_R8_UINT:
+ i = 8;
+ j = 8;
+ break;
+ default:
+ i = 4;
+ j = 4;
+ break;
+ }
+ } else {
+ const bool valign_4 =
+ (info->sample_count > 1 || ilo_dev_gen(dev) >= ILO_GEN(8) ||
+ (tiling == GEN6_TILING_Y && info->bind_surface_dp_render));
+
+ if (ilo_dev_gen(dev) < ILO_GEN(8) && valign_4)
+ assert(info->format != GEN6_FORMAT_R32G32B32_FLOAT);
+
+ i = 4;
+ j = (valign_4) ? 4 : 2;
+ }
+
+ *align_i = i;
+ *align_j = j;
+}
+
static bool
image_get_gen6_layout(const struct ilo_dev *dev,
const struct ilo_image_info *info,
else
layout->aux = ILO_IMAGE_AUX_NONE;
+ if (ilo_dev_gen(dev) >= ILO_GEN(7)) {
+ image_get_gen7_alignments(dev, info, layout->tiling,
+ &layout->align_i, &layout->align_j);
+ } else {
+ image_get_gen6_alignments(dev, info,
+ &layout->align_i, &layout->align_j);
+ }
+
+ /*
+ * the fact that align i and j are multiples of block width and height
+ * respectively is what makes the size of the bo a multiple of the block
+ * size, slices start at block boundaries, and many of the computations
+ * work.
+ */
+ assert(layout->align_i % info->block_width == 0);
+ assert(layout->align_j % info->block_height == 0);
+
+ /* make sure align() works */
+ assert(util_is_power_of_two(layout->align_i) &&
+ util_is_power_of_two(layout->align_j));
+ assert(util_is_power_of_two(info->block_width) &&
+ util_is_power_of_two(info->block_height));
+
return true;
}
}
}
-static void
-img_init_alignments(struct ilo_image *img,
- const struct ilo_image_params *params)
-{
- const struct ilo_image_info *info = params->info;
-
- /*
- * From the Sandy Bridge PRM, volume 1 part 1, page 113:
- *
- * "surface format align_i align_j
- * YUV 4:2:2 formats 4 *see below
- * BC1-5 4 4
- * FXT1 8 4
- * all other formats 4 *see below"
- *
- * "- align_j = 4 for any depth buffer
- * - align_j = 2 for separate stencil buffer
- * - align_j = 4 for any render target surface is multisampled (4x)
- * - align_j = 4 for any render target surface with Surface Vertical
- * Alignment = VALIGN_4
- * - align_j = 2 for any render target surface with Surface Vertical
- * Alignment = VALIGN_2
- * - align_j = 2 for all other render target surface
- * - align_j = 2 for any sampling engine surface with Surface Vertical
- * Alignment = VALIGN_2
- * - align_j = 4 for any sampling engine surface with Surface Vertical
- * Alignment = VALIGN_4"
- *
- * From the Sandy Bridge PRM, volume 4 part 1, page 86:
- *
- * "This field (Surface Vertical Alignment) must be set to VALIGN_2 if
- * the Surface Format is 96 bits per element (BPE)."
- *
- * They can be rephrased as
- *
- * align_i align_j
- * compressed formats block width block height
- * GEN6_FORMAT_R8_UINT 4 2
- * other depth/stencil formats 4 4
- * 4x multisampled 4 4
- * bpp 96 4 2
- * others 4 2 or 4
- */
-
- /*
- * From the Ivy Bridge PRM, volume 1 part 1, page 110:
- *
- * "surface defined by surface format align_i align_j
- * 3DSTATE_DEPTH_BUFFER D16_UNORM 8 4
- * not D16_UNORM 4 4
- * 3DSTATE_STENCIL_BUFFER N/A 8 8
- * SURFACE_STATE BC*, ETC*, EAC* 4 4
- * FXT1 8 4
- * all others (set by SURFACE_STATE)"
- *
- * From the Ivy Bridge PRM, volume 4 part 1, page 63:
- *
- * "- This field (Surface Vertical Aligment) is intended to be set to
- * VALIGN_4 if the surface was rendered as a depth buffer, for a
- * multisampled (4x) render target, or for a multisampled (8x)
- * render target, since these surfaces support only alignment of 4.
- * - Use of VALIGN_4 for other surfaces is supported, but uses more
- * memory.
- * - This field must be set to VALIGN_4 for all tiled Y Render Target
- * surfaces.
- * - Value of 1 is not supported for format YCRCB_NORMAL (0x182),
- * YCRCB_SWAPUVY (0x183), YCRCB_SWAPUV (0x18f), YCRCB_SWAPY (0x190)
- * - If Number of Multisamples is not MULTISAMPLECOUNT_1, this field
- * must be set to VALIGN_4."
- * - VALIGN_4 is not supported for surface format R32G32B32_FLOAT."
- *
- * "- This field (Surface Horizontal Aligment) is intended to be set to
- * HALIGN_8 only if the surface was rendered as a depth buffer with
- * Z16 format or a stencil buffer, since these surfaces support only
- * alignment of 8.
- * - Use of HALIGN_8 for other surfaces is supported, but uses more
- * memory.
- * - This field must be set to HALIGN_4 if the Surface Format is BC*.
- * - This field must be set to HALIGN_8 if the Surface Format is
- * FXT1."
- *
- * They can be rephrased as
- *
- * align_i align_j
- * compressed formats block width block height
- * GEN6_FORMAT_R16_UNORM 8 4
- * GEN6_FORMAT_R8_UINT 8 8
- * other depth/stencil formats 4 4
- * 2x or 4x multisampled 4 or 8 4
- * tiled Y 4 or 8 4 (if rt)
- * GEN6_FORMAT_R32G32B32_FLOAT 4 or 8 2
- * others 4 or 8 2 or 4
- */
-
- if (info->compressed) {
- /* this happens to be the case */
- img->align_i = img->block_width;
- img->align_j = img->block_height;
- } else if (info->bind_zs) {
- if (ilo_dev_gen(params->dev) >= ILO_GEN(7)) {
- switch (img->format) {
- case GEN6_FORMAT_R16_UNORM:
- img->align_i = 8;
- img->align_j = 4;
- break;
- case GEN6_FORMAT_R8_UINT:
- img->align_i = 8;
- img->align_j = 8;
- break;
- default:
- img->align_i = 4;
- img->align_j = 4;
- break;
- }
- } else {
- switch (img->format) {
- case GEN6_FORMAT_R8_UINT:
- img->align_i = 4;
- img->align_j = 2;
- break;
- default:
- img->align_i = 4;
- img->align_j = 4;
- break;
- }
- }
- } else {
- const bool valign_4 =
- (info->sample_count > 1) ||
- (ilo_dev_gen(params->dev) >= ILO_GEN(8)) ||
- (ilo_dev_gen(params->dev) >= ILO_GEN(7) &&
- img->tiling == GEN6_TILING_Y &&
- info->bind_surface_dp_render);
-
- if (ilo_dev_gen(params->dev) >= ILO_GEN(7) &&
- ilo_dev_gen(params->dev) <= ILO_GEN(7.5) && valign_4)
- assert(img->format != GEN6_FORMAT_R32G32B32_FLOAT);
-
- img->align_i = 4;
- img->align_j = (valign_4) ? 4 : 2;
- }
-
- /*
- * the fact that align i and j are multiples of block width and height
- * respectively is what makes the size of the bo a multiple of the block
- * size, slices start at block boundaries, and many of the computations
- * work.
- */
- assert(img->align_i % img->block_width == 0);
- assert(img->align_j % img->block_height == 0);
-
- /* make sure align() works */
- assert(util_is_power_of_two(img->align_i) &&
- util_is_power_of_two(img->align_j));
- assert(util_is_power_of_two(img->block_width) &&
- util_is_power_of_two(img->block_height));
-}
-
static void
img_init_size_and_format(struct ilo_image *img,
struct ilo_image_params *params)
img->aux.type = layout.aux;
- img_init_alignments(img, params);
+ img->align_i = layout.align_i;
+ img->align_j = layout.align_j;
+
img_init_lods(img, params);
img_init_layer_height(img, params);
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