-
- /* If there are forms of indirect addressing that the driver
- * cannot handle, perform the lowering pass.
- */
- if (options->EmitNoIndirectInput || options->EmitNoIndirectOutput ||
- options->EmitNoIndirectTemp || options->EmitNoIndirectUniform) {
- lower_variable_index_to_cond_assign(stage, ir,
- options->EmitNoIndirectInput,
- options->EmitNoIndirectOutput,
- options->EmitNoIndirectTemp,
- options->EmitNoIndirectUniform);
- }
-
- if (!pscreen->get_param(pscreen, PIPE_CAP_INT64_DIVMOD))
- lower_64bit_integer_instructions(ir, DIV64 | MOD64);
-
- if (ctx->Extensions.ARB_shading_language_packing) {
- unsigned lower_inst = LOWER_PACK_SNORM_2x16 |
- LOWER_UNPACK_SNORM_2x16 |
- LOWER_PACK_UNORM_2x16 |
- LOWER_UNPACK_UNORM_2x16 |
- LOWER_PACK_SNORM_4x8 |
- LOWER_UNPACK_SNORM_4x8 |
- LOWER_UNPACK_UNORM_4x8 |
- LOWER_PACK_UNORM_4x8;
-
- if (ctx->Extensions.ARB_gpu_shader5)
- lower_inst |= LOWER_PACK_USE_BFI |
- LOWER_PACK_USE_BFE;
- if (!ctx->st->has_half_float_packing)
- lower_inst |= LOWER_PACK_HALF_2x16 |
- LOWER_UNPACK_HALF_2x16;
-
- lower_packing_builtins(ir, lower_inst);
- }
-
- if (!pscreen->get_param(pscreen, PIPE_CAP_TEXTURE_GATHER_OFFSETS))
- lower_offset_arrays(ir);
- do_mat_op_to_vec(ir);
-
- if (stage == MESA_SHADER_FRAGMENT)
- lower_blend_equation_advanced(
- shader, ctx->Extensions.KHR_blend_equation_advanced_coherent);
-
- lower_instructions(ir,
- MOD_TO_FLOOR |
- FDIV_TO_MUL_RCP |
- EXP_TO_EXP2 |
- LOG_TO_LOG2 |
- (have_ldexp ? 0 : LDEXP_TO_ARITH) |
- (have_dfrexp ? 0 : DFREXP_DLDEXP_TO_ARITH) |
- CARRY_TO_ARITH |
- BORROW_TO_ARITH |
- (have_dround ? 0 : DOPS_TO_DFRAC) |
- (options->EmitNoPow ? POW_TO_EXP2 : 0) |
- (!ctx->Const.NativeIntegers ? INT_DIV_TO_MUL_RCP : 0) |
- (options->EmitNoSat ? SAT_TO_CLAMP : 0) |
- (ctx->Const.ForceGLSLAbsSqrt ? SQRT_TO_ABS_SQRT : 0) |
- /* Assume that if ARB_gpu_shader5 is not supported
- * then all of the extended integer functions need
- * lowering. It may be necessary to add some caps
- * for individual instructions.
- */
- (!ctx->Extensions.ARB_gpu_shader5
- ? BIT_COUNT_TO_MATH |
- EXTRACT_TO_SHIFTS |
- INSERT_TO_SHIFTS |
- REVERSE_TO_SHIFTS |
- FIND_LSB_TO_FLOAT_CAST |
- FIND_MSB_TO_FLOAT_CAST |
- IMUL_HIGH_TO_MUL
- : 0));
-
- do_vec_index_to_cond_assign(ir);
- lower_vector_insert(ir, true);
- lower_quadop_vector(ir, false);
- lower_noise(ir);
- if (options->MaxIfDepth == 0) {
- lower_discard(ir);
- }
-