diff options
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c | 74 |
1 files changed, 2 insertions, 72 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c index 9e2a0ebbb55..f5fa18fd38a 100644 --- a/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c +++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c @@ -1506,80 +1506,10 @@ static void tex_fetch_args( for (chan = 0; chan < count; chan++) address[chan] = ac_to_integer(&ctx->ac, address[chan]); - /* Adjust the sample index according to FMASK. - * - * For uncompressed MSAA surfaces, FMASK should return 0x76543210, - * which is the identity mapping. Each nibble says which physical sample - * should be fetched to get that sample. - * - * For example, 0x11111100 means there are only 2 samples stored and - * the second sample covers 3/4 of the pixel. When reading samples 0 - * and 1, return physical sample 0 (determined by the first two 0s - * in FMASK), otherwise return physical sample 1. - * - * The sample index should be adjusted as follows: - * sample_index = (fmask >> (sample_index * 4)) & 0xF; - */ if (target == TGSI_TEXTURE_2D_MSAA || target == TGSI_TEXTURE_2D_ARRAY_MSAA) { - struct lp_build_emit_data txf_emit_data = *emit_data; - LLVMValueRef txf_address[4]; - /* We only need .xy for non-arrays, and .xyz for arrays. */ - unsigned txf_count = target == TGSI_TEXTURE_2D_MSAA ? 2 : 3; - struct tgsi_full_instruction inst = {}; - - memcpy(txf_address, address, sizeof(txf_address)); - - /* Read FMASK using TXF_LZ. */ - inst.Instruction.Opcode = TGSI_OPCODE_TXF_LZ; - inst.Texture.Texture = target; - txf_emit_data.inst = &inst; - txf_emit_data.chan = 0; - set_tex_fetch_args(ctx, &txf_emit_data, - target, fmask_ptr, NULL, - txf_address, txf_count, 0xf); - build_tex_intrinsic(&tex_action, bld_base, &txf_emit_data); - - /* Initialize some constants. */ - LLVMValueRef four = LLVMConstInt(ctx->i32, 4, 0); - LLVMValueRef F = LLVMConstInt(ctx->i32, 0xF, 0); - - /* Apply the formula. */ - LLVMValueRef fmask = - LLVMBuildExtractElement(ctx->ac.builder, - txf_emit_data.output[0], - ctx->i32_0, ""); - - unsigned sample_chan = txf_count; /* the sample index is last */ - - LLVMValueRef sample_index4 = - LLVMBuildMul(ctx->ac.builder, address[sample_chan], four, ""); - - LLVMValueRef shifted_fmask = - LLVMBuildLShr(ctx->ac.builder, fmask, sample_index4, ""); - - LLVMValueRef final_sample = - LLVMBuildAnd(ctx->ac.builder, shifted_fmask, F, ""); - - /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK - * resource descriptor is 0 (invalid), - */ - LLVMValueRef fmask_desc = - LLVMBuildBitCast(ctx->ac.builder, fmask_ptr, - ctx->v8i32, ""); - - LLVMValueRef fmask_word1 = - LLVMBuildExtractElement(ctx->ac.builder, fmask_desc, - ctx->i32_1, ""); - - LLVMValueRef word1_is_nonzero = - LLVMBuildICmp(ctx->ac.builder, LLVMIntNE, - fmask_word1, ctx->i32_0, ""); - - /* Replace the MSAA sample index. */ - address[sample_chan] = - LLVMBuildSelect(ctx->ac.builder, word1_is_nonzero, - final_sample, address[sample_chan], ""); + ac_apply_fmask_to_sample(&ctx->ac, fmask_ptr, address, + target == TGSI_TEXTURE_2D_ARRAY_MSAA); } if (opcode == TGSI_OPCODE_TXF || |