diff options
| -rw-r--r-- | src/intel/isl/isl_surface_state.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/intel/isl/isl_surface_state.c b/src/intel/isl/isl_surface_state.c index b7354781cf0..c7b220b73fb 100644 --- a/src/intel/isl/isl_surface_state.c +++ b/src/intel/isl/isl_surface_state.c @@ -453,6 +453,38 @@ isl_genX(surf_fill_state_s)(const struct isl_device *dev, void *state, #endif #if (GEN_GEN >= 8 || GEN_IS_HASWELL) + if (info->view->usage & ISL_SURF_USAGE_RENDER_TARGET_BIT) { + /* From the Sky Lake PRM Vol. 2d, + * RENDER_SURFACE_STATE::Shader Channel Select Red + * + * "For Render Target, Red, Green and Blue Shader Channel Selects + * MUST be such that only valid components can be swapped i.e. only + * change the order of components in the pixel. Any other values for + * these Shader Channel Select fields are not valid for Render + * Targets. This also means that there MUST not be multiple shader + * channels mapped to the same RT channel." + */ + assert(info->view->swizzle.r == ISL_CHANNEL_SELECT_RED || + info->view->swizzle.r == ISL_CHANNEL_SELECT_GREEN || + info->view->swizzle.r == ISL_CHANNEL_SELECT_BLUE); + assert(info->view->swizzle.g == ISL_CHANNEL_SELECT_RED || + info->view->swizzle.g == ISL_CHANNEL_SELECT_GREEN || + info->view->swizzle.g == ISL_CHANNEL_SELECT_BLUE); + assert(info->view->swizzle.b == ISL_CHANNEL_SELECT_RED || + info->view->swizzle.b == ISL_CHANNEL_SELECT_GREEN || + info->view->swizzle.b == ISL_CHANNEL_SELECT_BLUE); + assert(info->view->swizzle.r != info->view->swizzle.g); + assert(info->view->swizzle.r != info->view->swizzle.b); + assert(info->view->swizzle.g != info->view->swizzle.b); + + /* From the Sky Lake PRM Vol. 2d, + * RENDER_SURFACE_STATE::Shader Channel Select Alpha + * + * "For Render Target, this field MUST be programmed to + * value = SCS_ALPHA." + */ + assert(info->view->swizzle.a == ISL_CHANNEL_SELECT_ALPHA); + } s.ShaderChannelSelectRed = info->view->swizzle.r; s.ShaderChannelSelectGreen = info->view->swizzle.g; s.ShaderChannelSelectBlue = info->view->swizzle.b; |