Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com>
---
src/mesa/drivers/dri/i965/brw_tex_layout.c | 80 ++++++++++++++++++++++++++++++
1 file changed, 80 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_tex_layout.c
b/src/mesa/drivers/dri/i965/brw_tex_layout.c
index 19ff5b8..d7cfe08 100644
--- a/src/mesa/drivers/dri/i965/brw_tex_layout.c
+++ b/src/mesa/drivers/dri/i965/brw_tex_layout.c
@@ -40,6 +40,80 @@
#define FILE_DEBUG_FLAG DEBUG_MIPTREE
static unsigned int
+tr_mode_horizontal_texture_alignment(struct brw_context *brw,
+ struct intel_mipmap_tree *mt)
+{
+ const unsigned *align_yf, *align_ys;
+ /* Bits per pixel/element. */
+ const unsigned bpp = _mesa_get_format_bytes(mt->format) * 8;
+
+ /* Horizontal alignment tables for TRMODE_{YF,YS}. Value in below
+ * tables specifies the horizontal alignment requirement in elements
+ * for the surface. An element is defined as a pixel in uncompressed
+ * surface formats, and as a compression block in compressed surface
+ * formats. For MSFMT_DEPTH_STENCIL type multisampled surfaces, an
+ * element is a sample.
+ */
+ const unsigned align_1d_yf[] = {4096, 2048, 1024, 512, 256};
+ const unsigned align_1d_ys[] = {65536, 32768, 16384, 8192, 4096};
+ const unsigned align_2d_yf[] = {64, 64, 32, 32, 16};
+ const unsigned align_2d_ys[] = {256, 256, 128, 128, 64};
+ const unsigned align_3d_yf[] = {16, 8, 8, 8, 4};
+ const unsigned align_3d_ys[] = {64, 32, 32, 32, 16};
+ int i = 0;
+
+ /* Alignment computations below assume bpp >= 8 and a power of 2. */
+ assert (bpp >= 8 && bpp <= 128 && (bpp & (bpp - 1)) == 0);
+
+ switch(mt->target) {
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_1D_ARRAY:
+ align_yf = align_1d_yf;
+ align_ys = align_1d_ys;
+ break;
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_RECTANGLE:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_CUBE_MAP:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ align_yf = align_2d_yf;
+ align_ys = align_2d_ys;
+ break;
+ case GL_TEXTURE_3D:
+ align_yf = align_3d_yf;
+ align_ys = align_3d_ys;
+ break;
+ default:
+ unreachable("not reached");
+ }
+
+ /* Compute array index. */
+ while (bpp >> (i + 4))
+ i++;
+
+ if (mt->num_samples > 1) {
+ const unsigned ms_align_div[] = {2, 2, 4, 4};
+ int j = 0;
+ /* num_samples must be power of 2. */
+ assert((mt->num_samples & (mt->num_samples -1)) == 0);
+
+ /* Compute array index. */
+ while (mt->num_samples >> (j + 2))
+ j++;
+
+ return mt->tr_mode == INTEL_MIPTREE_TRMODE_YF ?
+ align_yf[i] / ms_align_div[j] :
+ align_ys[i] / ms_align_div[j];
+ }
+
+ return (mt->tr_mode == INTEL_MIPTREE_TRMODE_YF ? align_yf[i]
+ : align_ys[i]);
+}
+
+
+static unsigned int
intel_horizontal_texture_alignment_unit(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
@@ -79,6 +153,12 @@ intel_horizontal_texture_alignment_unit(struct brw_context
*brw,
if (mt->format == MESA_FORMAT_S_UINT8)
return 8;
+ if (brw->gen >= 9 && mt->tr_mode != INTEL_MIPTREE_TRMODE_NONE) {
+ uint32_t align = tr_mode_horizontal_texture_alignment(brw, mt);
+ /* XY_FAST_COPY_BLT doesn't support horizontal alignment < 32. */
+ return align < 32 ? 32 : align;
+ }
+
if (brw->gen >= 7 && mt->format == MESA_FORMAT_Z_UNORM16)
return 8;
--
2.3.4
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