diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_tex_layout.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_tex_layout.c b/src/mesa/drivers/dri/i965/brw_tex_layout.c index e461bfc4e05..4c66bb53fa1 100644 --- a/src/mesa/drivers/dri/i965/brw_tex_layout.c +++ b/src/mesa/drivers/dri/i965/brw_tex_layout.c @@ -40,6 +40,81 @@ #define FILE_DEBUG_FLAG DEBUG_MIPTREE static unsigned int +tr_mode_horizontal_texture_alignment(const struct brw_context *brw, + const struct intel_mipmap_tree *mt) +{ + const unsigned *align_yf, *align_ys; + const unsigned bpp = _mesa_get_format_bytes(mt->format) * 8; + unsigned ret_align, divisor; + + /* 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 && is_power_of_two(bpp)); + + 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. */ + i = ffs(bpp/8) - 1; + + ret_align = mt->tr_mode == INTEL_MIPTREE_TRMODE_YF ? + align_yf[i] : align_ys[i]; + + assert(is_power_of_two(mt->num_samples)); + + switch (mt->num_samples) { + case 2: + case 4: + divisor = 2; + break; + case 8: + case 16: + divisor = 4; + break; + default: + divisor = 1; + break; + } + return ret_align / divisor; +} + + +static unsigned int intel_horizontal_texture_alignment_unit(struct brw_context *brw, struct intel_mipmap_tree *mt) { @@ -88,6 +163,12 @@ 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; |