diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen8_fs_generator.cpp | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp b/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp index f9026912b1f..332b14f6031 100644 --- a/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp +++ b/src/mesa/drivers/dri/i965/gen8_fs_generator.cpp @@ -252,6 +252,23 @@ gen8_fs_generator::generate_tex(fs_inst *ir, brw_imm_ud(ir->texture_offset)); } + if (ir->sampler >= 16) { + /* The "Sampler Index" field can only store values between 0 and 15. + * However, we can add an offset to the "Sampler State Pointer" + * field, effectively selecting a different set of 16 samplers. + * + * The "Sampler State Pointer" needs to be aligned to a 32-byte + * offset, and each sampler state is only 16-bytes, so we can't + * exclusively use the offset - we have to use both. + */ + gen8_instruction *add = + ADD(get_element_ud(src, 3), + get_element_ud(brw_vec8_grf(0, 0), 3), + brw_imm_ud(16 * (ir->sampler / 16) * + sizeof(gen7_sampler_state))); + gen8_set_mask_control(add, BRW_MASK_DISABLE); + } + default_state.exec_size = save_exec_size; } @@ -263,7 +280,7 @@ gen8_fs_generator::generate_tex(fs_inst *ir, gen8_set_src0(brw, inst, src); gen8_set_sampler_message(brw, inst, surf_index, - ir->sampler, + ir->sampler % 16, msg_type, rlen, ir->mlen, |