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isl/surface_state: Set L2 bypass disable for certain BC* formats

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This commit is contained in:
Jason Ekstrand
2016-03-03 16:15:54 -08:00
parent 623ce595a9
commit 56ba13c994
1 changed files with 22 additions and 0 deletions
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22
src/intel/isl/isl_surface_state.c
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@@ -370,6 +370,28 @@ isl_genX(surf_fill_state_s)(const struct isl_device *dev, void *state,
s.MIPCountLOD = MAX(info->view->levels, 1) - 1; s.MIPCountLOD = MAX(info->view->levels, 1) - 1;
} }
#if GEN_GEN >= 8
/* From the CHV PRM, Volume 2d, page 321 (RENDER_SURFACE_STATE dword 0
* bit 9 "Sampler L2 Bypass Mode Disable" Programming Notes):
*
* This bit must be set for the following surface types: BC2_UNORM
* BC3_UNORM BC5_UNORM BC5_SNORM BC7_UNORM
*/
if (GEN_GEN >= 9 || dev->info->is_cherryview) {
switch (info->view->format) {
case ISL_FORMAT_BC2_UNORM:
case ISL_FORMAT_BC3_UNORM:
case ISL_FORMAT_BC5_UNORM:
case ISL_FORMAT_BC5_SNORM:
case ISL_FORMAT_BC7_UNORM:
s.SamplerL2BypassModeDisable = true;
break;
default:
break;
}
}
#endif
#if 0 #if 0
if (GEN_GEN == 8) { if (GEN_GEN == 8) {
if (isl_format_is_integer(info->view->format)) { if (isl_format_is_integer(info->view->format)) {