| /* Copyright © 2011 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "brw_vec4.h" |
| #include "glsl/ir_print_visitor.h" |
| |
| extern "C" { |
| #include "brw_eu.h" |
| #include "main/macros.h" |
| }; |
| |
| using namespace brw; |
| |
| namespace brw { |
| |
| int |
| vec4_visitor::setup_attributes(int payload_reg) |
| { |
| int nr_attributes; |
| int attribute_map[VERT_ATTRIB_MAX + 1]; |
| |
| nr_attributes = 0; |
| for (int i = 0; i < VERT_ATTRIB_MAX; i++) { |
| if (prog_data->inputs_read & BITFIELD64_BIT(i)) { |
| attribute_map[i] = payload_reg + nr_attributes; |
| nr_attributes++; |
| } |
| } |
| |
| /* VertexID is stored by the VF as the last vertex element, but we |
| * don't represent it with a flag in inputs_read, so we call it |
| * VERT_ATTRIB_MAX. |
| */ |
| if (prog_data->uses_vertexid) { |
| attribute_map[VERT_ATTRIB_MAX] = payload_reg + nr_attributes; |
| nr_attributes++; |
| } |
| |
| foreach_list(node, &this->instructions) { |
| vec4_instruction *inst = (vec4_instruction *)node; |
| |
| /* We have to support ATTR as a destination for GL_FIXED fixup. */ |
| if (inst->dst.file == ATTR) { |
| int grf = attribute_map[inst->dst.reg + inst->dst.reg_offset]; |
| |
| struct brw_reg reg = brw_vec8_grf(grf, 0); |
| reg.dw1.bits.writemask = inst->dst.writemask; |
| |
| inst->dst.file = HW_REG; |
| inst->dst.fixed_hw_reg = reg; |
| } |
| |
| for (int i = 0; i < 3; i++) { |
| if (inst->src[i].file != ATTR) |
| continue; |
| |
| int grf = attribute_map[inst->src[i].reg + inst->src[i].reg_offset]; |
| |
| struct brw_reg reg = brw_vec8_grf(grf, 0); |
| reg.dw1.bits.swizzle = inst->src[i].swizzle; |
| reg.type = inst->src[i].type; |
| if (inst->src[i].abs) |
| reg = brw_abs(reg); |
| if (inst->src[i].negate) |
| reg = negate(reg); |
| |
| inst->src[i].file = HW_REG; |
| inst->src[i].fixed_hw_reg = reg; |
| } |
| } |
| |
| /* The BSpec says we always have to read at least one thing from |
| * the VF, and it appears that the hardware wedges otherwise. |
| */ |
| if (nr_attributes == 0) |
| nr_attributes = 1; |
| |
| prog_data->urb_read_length = (nr_attributes + 1) / 2; |
| |
| unsigned vue_entries = MAX2(nr_attributes, c->prog_data.vue_map.num_slots); |
| |
| if (intel->gen == 6) |
| c->prog_data.urb_entry_size = ALIGN(vue_entries, 8) / 8; |
| else |
| c->prog_data.urb_entry_size = ALIGN(vue_entries, 4) / 4; |
| |
| return payload_reg + nr_attributes; |
| } |
| |
| int |
| vec4_visitor::setup_uniforms(int reg) |
| { |
| /* The pre-gen6 VS requires that some push constants get loaded no |
| * matter what, or the GPU would hang. |
| */ |
| if (intel->gen < 6 && this->uniforms == 0) { |
| this->uniform_vector_size[this->uniforms] = 1; |
| |
| for (unsigned int i = 0; i < 4; i++) { |
| unsigned int slot = this->uniforms * 4 + i; |
| static float zero = 0.0; |
| c->prog_data.param[slot] = &zero; |
| } |
| |
| this->uniforms++; |
| reg++; |
| } else { |
| reg += ALIGN(uniforms, 2) / 2; |
| } |
| |
| c->prog_data.nr_params = this->uniforms * 4; |
| |
| c->prog_data.curb_read_length = reg - 1; |
| c->prog_data.uses_new_param_layout = true; |
| |
| return reg; |
| } |
| |
| void |
| vec4_visitor::setup_payload(void) |
| { |
| int reg = 0; |
| |
| /* The payload always contains important data in g0, which contains |
| * the URB handles that are passed on to the URB write at the end |
| * of the thread. So, we always start push constants at g1. |
| */ |
| reg++; |
| |
| reg = setup_uniforms(reg); |
| |
| reg = setup_attributes(reg); |
| |
| this->first_non_payload_grf = reg; |
| } |
| |
| struct brw_reg |
| vec4_instruction::get_dst(void) |
| { |
| struct brw_reg brw_reg; |
| |
| switch (dst.file) { |
| case GRF: |
| brw_reg = brw_vec8_grf(dst.reg + dst.reg_offset, 0); |
| brw_reg = retype(brw_reg, dst.type); |
| brw_reg.dw1.bits.writemask = dst.writemask; |
| break; |
| |
| case MRF: |
| brw_reg = brw_message_reg(dst.reg + dst.reg_offset); |
| brw_reg = retype(brw_reg, dst.type); |
| brw_reg.dw1.bits.writemask = dst.writemask; |
| break; |
| |
| case HW_REG: |
| brw_reg = dst.fixed_hw_reg; |
| break; |
| |
| case BAD_FILE: |
| brw_reg = brw_null_reg(); |
| break; |
| |
| default: |
| assert(!"not reached"); |
| brw_reg = brw_null_reg(); |
| break; |
| } |
| return brw_reg; |
| } |
| |
| struct brw_reg |
| vec4_instruction::get_src(int i) |
| { |
| struct brw_reg brw_reg; |
| |
| switch (src[i].file) { |
| case GRF: |
| brw_reg = brw_vec8_grf(src[i].reg + src[i].reg_offset, 0); |
| brw_reg = retype(brw_reg, src[i].type); |
| brw_reg.dw1.bits.swizzle = src[i].swizzle; |
| if (src[i].abs) |
| brw_reg = brw_abs(brw_reg); |
| if (src[i].negate) |
| brw_reg = negate(brw_reg); |
| break; |
| |
| case IMM: |
| switch (src[i].type) { |
| case BRW_REGISTER_TYPE_F: |
| brw_reg = brw_imm_f(src[i].imm.f); |
| break; |
| case BRW_REGISTER_TYPE_D: |
| brw_reg = brw_imm_d(src[i].imm.i); |
| break; |
| case BRW_REGISTER_TYPE_UD: |
| brw_reg = brw_imm_ud(src[i].imm.u); |
| break; |
| default: |
| assert(!"not reached"); |
| brw_reg = brw_null_reg(); |
| break; |
| } |
| break; |
| |
| case UNIFORM: |
| brw_reg = stride(brw_vec4_grf(1 + (src[i].reg + src[i].reg_offset) / 2, |
| ((src[i].reg + src[i].reg_offset) % 2) * 4), |
| 0, 4, 1); |
| brw_reg = retype(brw_reg, src[i].type); |
| brw_reg.dw1.bits.swizzle = src[i].swizzle; |
| if (src[i].abs) |
| brw_reg = brw_abs(brw_reg); |
| if (src[i].negate) |
| brw_reg = negate(brw_reg); |
| |
| /* This should have been moved to pull constants. */ |
| assert(!src[i].reladdr); |
| break; |
| |
| case HW_REG: |
| brw_reg = src[i].fixed_hw_reg; |
| break; |
| |
| case BAD_FILE: |
| /* Probably unused. */ |
| brw_reg = brw_null_reg(); |
| break; |
| case ATTR: |
| default: |
| assert(!"not reached"); |
| brw_reg = brw_null_reg(); |
| break; |
| } |
| |
| return brw_reg; |
| } |
| |
| void |
| vec4_visitor::generate_math1_gen4(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src) |
| { |
| brw_math(p, |
| dst, |
| brw_math_function(inst->opcode), |
| inst->base_mrf, |
| src, |
| BRW_MATH_DATA_VECTOR, |
| BRW_MATH_PRECISION_FULL); |
| } |
| |
| static void |
| check_gen6_math_src_arg(struct brw_reg src) |
| { |
| /* Source swizzles are ignored. */ |
| assert(!src.abs); |
| assert(!src.negate); |
| assert(src.dw1.bits.swizzle == BRW_SWIZZLE_XYZW); |
| } |
| |
| void |
| vec4_visitor::generate_math1_gen6(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src) |
| { |
| /* Can't do writemask because math can't be align16. */ |
| assert(dst.dw1.bits.writemask == WRITEMASK_XYZW); |
| check_gen6_math_src_arg(src); |
| |
| brw_set_access_mode(p, BRW_ALIGN_1); |
| brw_math(p, |
| dst, |
| brw_math_function(inst->opcode), |
| inst->base_mrf, |
| src, |
| BRW_MATH_DATA_SCALAR, |
| BRW_MATH_PRECISION_FULL); |
| brw_set_access_mode(p, BRW_ALIGN_16); |
| } |
| |
| void |
| vec4_visitor::generate_math2_gen7(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src0, |
| struct brw_reg src1) |
| { |
| brw_math2(p, |
| dst, |
| brw_math_function(inst->opcode), |
| src0, src1); |
| } |
| |
| void |
| vec4_visitor::generate_math2_gen6(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src0, |
| struct brw_reg src1) |
| { |
| /* Can't do writemask because math can't be align16. */ |
| assert(dst.dw1.bits.writemask == WRITEMASK_XYZW); |
| /* Source swizzles are ignored. */ |
| check_gen6_math_src_arg(src0); |
| check_gen6_math_src_arg(src1); |
| |
| brw_set_access_mode(p, BRW_ALIGN_1); |
| brw_math2(p, |
| dst, |
| brw_math_function(inst->opcode), |
| src0, src1); |
| brw_set_access_mode(p, BRW_ALIGN_16); |
| } |
| |
| void |
| vec4_visitor::generate_math2_gen4(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src0, |
| struct brw_reg src1) |
| { |
| /* From the Ironlake PRM, Volume 4, Part 1, Section 6.1.13 |
| * "Message Payload": |
| * |
| * "Operand0[7]. For the INT DIV functions, this operand is the |
| * denominator." |
| * ... |
| * "Operand1[7]. For the INT DIV functions, this operand is the |
| * numerator." |
| */ |
| bool is_int_div = inst->opcode != SHADER_OPCODE_POW; |
| struct brw_reg &op0 = is_int_div ? src1 : src0; |
| struct brw_reg &op1 = is_int_div ? src0 : src1; |
| |
| brw_push_insn_state(p); |
| brw_set_saturate(p, false); |
| brw_set_predicate_control(p, BRW_PREDICATE_NONE); |
| brw_MOV(p, retype(brw_message_reg(inst->base_mrf + 1), op1.type), op1); |
| brw_pop_insn_state(p); |
| |
| brw_math(p, |
| dst, |
| brw_math_function(inst->opcode), |
| inst->base_mrf, |
| op0, |
| BRW_MATH_DATA_VECTOR, |
| BRW_MATH_PRECISION_FULL); |
| } |
| |
| void |
| vec4_visitor::generate_tex(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src) |
| { |
| int msg_type = -1; |
| |
| if (intel->gen >= 5) { |
| switch (inst->opcode) { |
| case SHADER_OPCODE_TEX: |
| case SHADER_OPCODE_TXL: |
| if (inst->shadow_compare) { |
| msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE; |
| } else { |
| msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LOD; |
| } |
| break; |
| case SHADER_OPCODE_TXD: |
| if (inst->shadow_compare) { |
| /* Gen7.5+. Otherwise, lowered by brw_lower_texture_gradients(). */ |
| assert(intel->is_haswell); |
| msg_type = HSW_SAMPLER_MESSAGE_SAMPLE_DERIV_COMPARE; |
| } else { |
| msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS; |
| } |
| break; |
| case SHADER_OPCODE_TXF: |
| msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_LD; |
| break; |
| case SHADER_OPCODE_TXS: |
| msg_type = GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO; |
| break; |
| default: |
| assert(!"should not get here: invalid VS texture opcode"); |
| break; |
| } |
| } else { |
| switch (inst->opcode) { |
| case SHADER_OPCODE_TEX: |
| case SHADER_OPCODE_TXL: |
| if (inst->shadow_compare) { |
| msg_type = BRW_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_LOD_COMPARE; |
| assert(inst->mlen == 3); |
| } else { |
| msg_type = BRW_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_LOD; |
| assert(inst->mlen == 2); |
| } |
| break; |
| case SHADER_OPCODE_TXD: |
| /* There is no sample_d_c message; comparisons are done manually. */ |
| msg_type = BRW_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_GRADIENTS; |
| assert(inst->mlen == 4); |
| break; |
| case SHADER_OPCODE_TXF: |
| msg_type = BRW_SAMPLER_MESSAGE_SIMD4X2_LD; |
| assert(inst->mlen == 2); |
| break; |
| case SHADER_OPCODE_TXS: |
| msg_type = BRW_SAMPLER_MESSAGE_SIMD4X2_RESINFO; |
| assert(inst->mlen == 2); |
| break; |
| default: |
| assert(!"should not get here: invalid VS texture opcode"); |
| break; |
| } |
| } |
| |
| assert(msg_type != -1); |
| |
| /* Load the message header if present. If there's a texture offset, we need |
| * to set it up explicitly and load the offset bitfield. Otherwise, we can |
| * use an implied move from g0 to the first message register. |
| */ |
| if (inst->texture_offset) { |
| /* Explicitly set up the message header by copying g0 to the MRF. */ |
| brw_MOV(p, retype(brw_message_reg(inst->base_mrf), BRW_REGISTER_TYPE_UD), |
| retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UD)); |
| |
| /* Then set the offset bits in DWord 2. */ |
| brw_set_access_mode(p, BRW_ALIGN_1); |
| brw_MOV(p, |
| retype(brw_vec1_reg(BRW_MESSAGE_REGISTER_FILE, inst->base_mrf, 2), |
| BRW_REGISTER_TYPE_UD), |
| brw_imm_uw(inst->texture_offset)); |
| brw_set_access_mode(p, BRW_ALIGN_16); |
| } else if (inst->header_present) { |
| /* Set up an implied move from g0 to the MRF. */ |
| src = brw_vec8_grf(0, 0); |
| } |
| |
| uint32_t return_format; |
| |
| switch (dst.type) { |
| case BRW_REGISTER_TYPE_D: |
| return_format = BRW_SAMPLER_RETURN_FORMAT_SINT32; |
| break; |
| case BRW_REGISTER_TYPE_UD: |
| return_format = BRW_SAMPLER_RETURN_FORMAT_UINT32; |
| break; |
| default: |
| return_format = BRW_SAMPLER_RETURN_FORMAT_FLOAT32; |
| break; |
| } |
| |
| brw_SAMPLE(p, |
| dst, |
| inst->base_mrf, |
| src, |
| SURF_INDEX_VS_TEXTURE(inst->sampler), |
| inst->sampler, |
| WRITEMASK_XYZW, |
| msg_type, |
| 1, /* response length */ |
| inst->mlen, |
| inst->header_present, |
| BRW_SAMPLER_SIMD_MODE_SIMD4X2, |
| return_format); |
| } |
| |
| void |
| vec4_visitor::generate_urb_write(vec4_instruction *inst) |
| { |
| brw_urb_WRITE(p, |
| brw_null_reg(), /* dest */ |
| inst->base_mrf, /* starting mrf reg nr */ |
| brw_vec8_grf(0, 0), /* src */ |
| false, /* allocate */ |
| true, /* used */ |
| inst->mlen, |
| 0, /* response len */ |
| inst->eot, /* eot */ |
| inst->eot, /* writes complete */ |
| inst->offset, /* urb destination offset */ |
| BRW_URB_SWIZZLE_INTERLEAVE); |
| } |
| |
| void |
| vec4_visitor::generate_oword_dual_block_offsets(struct brw_reg m1, |
| struct brw_reg index) |
| { |
| int second_vertex_offset; |
| |
| if (intel->gen >= 6) |
| second_vertex_offset = 1; |
| else |
| second_vertex_offset = 16; |
| |
| m1 = retype(m1, BRW_REGISTER_TYPE_D); |
| |
| /* Set up M1 (message payload). Only the block offsets in M1.0 and |
| * M1.4 are used, and the rest are ignored. |
| */ |
| struct brw_reg m1_0 = suboffset(vec1(m1), 0); |
| struct brw_reg m1_4 = suboffset(vec1(m1), 4); |
| struct brw_reg index_0 = suboffset(vec1(index), 0); |
| struct brw_reg index_4 = suboffset(vec1(index), 4); |
| |
| brw_push_insn_state(p); |
| brw_set_mask_control(p, BRW_MASK_DISABLE); |
| brw_set_access_mode(p, BRW_ALIGN_1); |
| |
| brw_MOV(p, m1_0, index_0); |
| |
| brw_set_predicate_inverse(p, true); |
| if (index.file == BRW_IMMEDIATE_VALUE) { |
| index_4.dw1.ud += second_vertex_offset; |
| brw_MOV(p, m1_4, index_4); |
| } else { |
| brw_ADD(p, m1_4, index_4, brw_imm_d(second_vertex_offset)); |
| } |
| |
| brw_pop_insn_state(p); |
| } |
| |
| void |
| vec4_visitor::generate_scratch_read(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg index) |
| { |
| struct brw_reg header = brw_vec8_grf(0, 0); |
| |
| gen6_resolve_implied_move(p, &header, inst->base_mrf); |
| |
| generate_oword_dual_block_offsets(brw_message_reg(inst->base_mrf + 1), |
| index); |
| |
| uint32_t msg_type; |
| |
| if (intel->gen >= 6) |
| msg_type = GEN6_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ; |
| else if (intel->gen == 5 || intel->is_g4x) |
| msg_type = G45_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ; |
| else |
| msg_type = BRW_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ; |
| |
| /* Each of the 8 channel enables is considered for whether each |
| * dword is written. |
| */ |
| struct brw_instruction *send = brw_next_insn(p, BRW_OPCODE_SEND); |
| brw_set_dest(p, send, dst); |
| brw_set_src0(p, send, header); |
| if (intel->gen < 6) |
| send->header.destreg__conditionalmod = inst->base_mrf; |
| brw_set_dp_read_message(p, send, |
| 255, /* binding table index: stateless access */ |
| BRW_DATAPORT_OWORD_DUAL_BLOCK_1OWORD, |
| msg_type, |
| BRW_DATAPORT_READ_TARGET_RENDER_CACHE, |
| 2, /* mlen */ |
| 1 /* rlen */); |
| } |
| |
| void |
| vec4_visitor::generate_scratch_write(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg src, |
| struct brw_reg index) |
| { |
| struct brw_reg header = brw_vec8_grf(0, 0); |
| bool write_commit; |
| |
| /* If the instruction is predicated, we'll predicate the send, not |
| * the header setup. |
| */ |
| brw_set_predicate_control(p, false); |
| |
| gen6_resolve_implied_move(p, &header, inst->base_mrf); |
| |
| generate_oword_dual_block_offsets(brw_message_reg(inst->base_mrf + 1), |
| index); |
| |
| brw_MOV(p, |
| retype(brw_message_reg(inst->base_mrf + 2), BRW_REGISTER_TYPE_D), |
| retype(src, BRW_REGISTER_TYPE_D)); |
| |
| uint32_t msg_type; |
| |
| if (intel->gen >= 7) |
| msg_type = GEN7_DATAPORT_WRITE_MESSAGE_OWORD_DUAL_BLOCK_WRITE; |
| else if (intel->gen == 6) |
| msg_type = GEN6_DATAPORT_WRITE_MESSAGE_OWORD_DUAL_BLOCK_WRITE; |
| else |
| msg_type = BRW_DATAPORT_WRITE_MESSAGE_OWORD_DUAL_BLOCK_WRITE; |
| |
| brw_set_predicate_control(p, inst->predicate); |
| |
| /* Pre-gen6, we have to specify write commits to ensure ordering |
| * between reads and writes within a thread. Afterwards, that's |
| * guaranteed and write commits only matter for inter-thread |
| * synchronization. |
| */ |
| if (intel->gen >= 6) { |
| write_commit = false; |
| } else { |
| /* The visitor set up our destination register to be g0. This |
| * means that when the next read comes along, we will end up |
| * reading from g0 and causing a block on the write commit. For |
| * write-after-read, we are relying on the value of the previous |
| * read being used (and thus blocking on completion) before our |
| * write is executed. This means we have to be careful in |
| * instruction scheduling to not violate this assumption. |
| */ |
| write_commit = true; |
| } |
| |
| /* Each of the 8 channel enables is considered for whether each |
| * dword is written. |
| */ |
| struct brw_instruction *send = brw_next_insn(p, BRW_OPCODE_SEND); |
| brw_set_dest(p, send, dst); |
| brw_set_src0(p, send, header); |
| if (intel->gen < 6) |
| send->header.destreg__conditionalmod = inst->base_mrf; |
| brw_set_dp_write_message(p, send, |
| 255, /* binding table index: stateless access */ |
| BRW_DATAPORT_OWORD_DUAL_BLOCK_1OWORD, |
| msg_type, |
| 3, /* mlen */ |
| true, /* header present */ |
| false, /* not a render target write */ |
| write_commit, /* rlen */ |
| false, /* eot */ |
| write_commit); |
| } |
| |
| void |
| vec4_visitor::generate_pull_constant_load(vec4_instruction *inst, |
| struct brw_reg dst, |
| struct brw_reg index, |
| struct brw_reg offset) |
| { |
| assert(index.file == BRW_IMMEDIATE_VALUE && |
| index.type == BRW_REGISTER_TYPE_UD); |
| uint32_t surf_index = index.dw1.ud; |
| |
| if (intel->gen == 7) { |
| gen6_resolve_implied_move(p, &offset, inst->base_mrf); |
| brw_instruction *insn = brw_next_insn(p, BRW_OPCODE_SEND); |
| brw_set_dest(p, insn, dst); |
| brw_set_src0(p, insn, offset); |
| brw_set_sampler_message(p, insn, |
| surf_index, |
| 0, /* LD message ignores sampler unit */ |
| GEN5_SAMPLER_MESSAGE_SAMPLE_LD, |
| 1, /* rlen */ |
| 1, /* mlen */ |
| false, /* no header */ |
| BRW_SAMPLER_SIMD_MODE_SIMD4X2, |
| 0); |
| return; |
| } |
| |
| struct brw_reg header = brw_vec8_grf(0, 0); |
| |
| gen6_resolve_implied_move(p, &header, inst->base_mrf); |
| |
| brw_MOV(p, retype(brw_message_reg(inst->base_mrf + 1), BRW_REGISTER_TYPE_D), |
| offset); |
| |
| uint32_t msg_type; |
| |
| if (intel->gen >= 6) |
| msg_type = GEN6_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ; |
| else if (intel->gen == 5 || intel->is_g4x) |
| msg_type = G45_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ; |
| else |
| msg_type = BRW_DATAPORT_READ_MESSAGE_OWORD_DUAL_BLOCK_READ; |
| |
| /* Each of the 8 channel enables is considered for whether each |
| * dword is written. |
| */ |
| struct brw_instruction *send = brw_next_insn(p, BRW_OPCODE_SEND); |
| brw_set_dest(p, send, dst); |
| brw_set_src0(p, send, header); |
| if (intel->gen < 6) |
| send->header.destreg__conditionalmod = inst->base_mrf; |
| brw_set_dp_read_message(p, send, |
| surf_index, |
| BRW_DATAPORT_OWORD_DUAL_BLOCK_1OWORD, |
| msg_type, |
| BRW_DATAPORT_READ_TARGET_DATA_CACHE, |
| 2, /* mlen */ |
| 1 /* rlen */); |
| } |
| |
| void |
| vec4_visitor::generate_vs_instruction(vec4_instruction *instruction, |
| struct brw_reg dst, |
| struct brw_reg *src) |
| { |
| vec4_instruction *inst = (vec4_instruction *)instruction; |
| |
| switch (inst->opcode) { |
| case SHADER_OPCODE_RCP: |
| case SHADER_OPCODE_RSQ: |
| case SHADER_OPCODE_SQRT: |
| case SHADER_OPCODE_EXP2: |
| case SHADER_OPCODE_LOG2: |
| case SHADER_OPCODE_SIN: |
| case SHADER_OPCODE_COS: |
| if (intel->gen == 6) { |
| generate_math1_gen6(inst, dst, src[0]); |
| } else { |
| /* Also works for Gen7. */ |
| generate_math1_gen4(inst, dst, src[0]); |
| } |
| break; |
| |
| case SHADER_OPCODE_POW: |
| case SHADER_OPCODE_INT_QUOTIENT: |
| case SHADER_OPCODE_INT_REMAINDER: |
| if (intel->gen >= 7) { |
| generate_math2_gen7(inst, dst, src[0], src[1]); |
| } else if (intel->gen == 6) { |
| generate_math2_gen6(inst, dst, src[0], src[1]); |
| } else { |
| generate_math2_gen4(inst, dst, src[0], src[1]); |
| } |
| break; |
| |
| case SHADER_OPCODE_TEX: |
| case SHADER_OPCODE_TXD: |
| case SHADER_OPCODE_TXF: |
| case SHADER_OPCODE_TXL: |
| case SHADER_OPCODE_TXS: |
| generate_tex(inst, dst, src[0]); |
| break; |
| |
| case VS_OPCODE_URB_WRITE: |
| generate_urb_write(inst); |
| break; |
| |
| case VS_OPCODE_SCRATCH_READ: |
| generate_scratch_read(inst, dst, src[0]); |
| break; |
| |
| case VS_OPCODE_SCRATCH_WRITE: |
| generate_scratch_write(inst, dst, src[0], src[1]); |
| break; |
| |
| case VS_OPCODE_PULL_CONSTANT_LOAD: |
| generate_pull_constant_load(inst, dst, src[0], src[1]); |
| break; |
| |
| default: |
| if (inst->opcode < (int)ARRAY_SIZE(brw_opcodes)) { |
| fail("unsupported opcode in `%s' in VS\n", |
| brw_opcodes[inst->opcode].name); |
| } else { |
| fail("Unsupported opcode %d in VS", inst->opcode); |
| } |
| } |
| } |
| |
| bool |
| vec4_visitor::run() |
| { |
| if (c->key.userclip_active && !c->key.uses_clip_distance) |
| setup_uniform_clipplane_values(); |
| |
| /* Generate VS IR for main(). (the visitor only descends into |
| * functions called "main"). |
| */ |
| visit_instructions(shader->ir); |
| |
| emit_urb_writes(); |
| |
| /* Before any optimization, push array accesses out to scratch |
| * space where we need them to be. This pass may allocate new |
| * virtual GRFs, so we want to do it early. It also makes sure |
| * that we have reladdr computations available for CSE, since we'll |
| * often do repeated subexpressions for those. |
| */ |
| move_grf_array_access_to_scratch(); |
| move_uniform_array_access_to_pull_constants(); |
| pack_uniform_registers(); |
| move_push_constants_to_pull_constants(); |
| |
| bool progress; |
| do { |
| progress = false; |
| progress = dead_code_eliminate() || progress; |
| progress = opt_copy_propagation() || progress; |
| progress = opt_algebraic() || progress; |
| progress = opt_compute_to_mrf() || progress; |
| } while (progress); |
| |
| |
| if (failed) |
| return false; |
| |
| setup_payload(); |
| |
| if (false) { |
| /* Debug of register spilling: Go spill everything. */ |
| const int grf_count = virtual_grf_count; |
| float spill_costs[virtual_grf_count]; |
| bool no_spill[virtual_grf_count]; |
| evaluate_spill_costs(spill_costs, no_spill); |
| for (int i = 0; i < grf_count; i++) { |
| if (no_spill[i]) |
| continue; |
| spill_reg(i); |
| } |
| } |
| |
| while (!reg_allocate()) { |
| if (failed) |
| break; |
| } |
| |
| if (failed) |
| return false; |
| |
| brw_set_access_mode(p, BRW_ALIGN_16); |
| |
| generate_code(); |
| |
| return !failed; |
| } |
| |
| void |
| vec4_visitor::generate_code() |
| { |
| int last_native_inst = 0; |
| const char *last_annotation_string = NULL; |
| ir_instruction *last_annotation_ir = NULL; |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_VS)) { |
| printf("Native code for vertex shader %d:\n", prog->Name); |
| } |
| |
| foreach_list(node, &this->instructions) { |
| vec4_instruction *inst = (vec4_instruction *)node; |
| struct brw_reg src[3], dst; |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_VS)) { |
| if (last_annotation_ir != inst->ir) { |
| last_annotation_ir = inst->ir; |
| if (last_annotation_ir) { |
| printf(" "); |
| last_annotation_ir->print(); |
| printf("\n"); |
| } |
| } |
| if (last_annotation_string != inst->annotation) { |
| last_annotation_string = inst->annotation; |
| if (last_annotation_string) |
| printf(" %s\n", last_annotation_string); |
| } |
| } |
| |
| for (unsigned int i = 0; i < 3; i++) { |
| src[i] = inst->get_src(i); |
| } |
| dst = inst->get_dst(); |
| |
| brw_set_conditionalmod(p, inst->conditional_mod); |
| brw_set_predicate_control(p, inst->predicate); |
| brw_set_predicate_inverse(p, inst->predicate_inverse); |
| brw_set_saturate(p, inst->saturate); |
| |
| switch (inst->opcode) { |
| case BRW_OPCODE_MOV: |
| brw_MOV(p, dst, src[0]); |
| break; |
| case BRW_OPCODE_ADD: |
| brw_ADD(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_MUL: |
| brw_MUL(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_MACH: |
| brw_set_acc_write_control(p, 1); |
| brw_MACH(p, dst, src[0], src[1]); |
| brw_set_acc_write_control(p, 0); |
| break; |
| |
| case BRW_OPCODE_FRC: |
| brw_FRC(p, dst, src[0]); |
| break; |
| case BRW_OPCODE_RNDD: |
| brw_RNDD(p, dst, src[0]); |
| break; |
| case BRW_OPCODE_RNDE: |
| brw_RNDE(p, dst, src[0]); |
| break; |
| case BRW_OPCODE_RNDZ: |
| brw_RNDZ(p, dst, src[0]); |
| break; |
| |
| case BRW_OPCODE_AND: |
| brw_AND(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_OR: |
| brw_OR(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_XOR: |
| brw_XOR(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_NOT: |
| brw_NOT(p, dst, src[0]); |
| break; |
| case BRW_OPCODE_ASR: |
| brw_ASR(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_SHR: |
| brw_SHR(p, dst, src[0], src[1]); |
| break; |
| case BRW_OPCODE_SHL: |
| brw_SHL(p, dst, src[0], src[1]); |
| break; |
| |
| case BRW_OPCODE_CMP: |
| brw_CMP(p, dst, inst->conditional_mod, src[0], src[1]); |
| break; |
| case BRW_OPCODE_SEL: |
| brw_SEL(p, dst, src[0], src[1]); |
| break; |
| |
| case BRW_OPCODE_DP4: |
| brw_DP4(p, dst, src[0], src[1]); |
| break; |
| |
| case BRW_OPCODE_DP3: |
| brw_DP3(p, dst, src[0], src[1]); |
| break; |
| |
| case BRW_OPCODE_DP2: |
| brw_DP2(p, dst, src[0], src[1]); |
| break; |
| |
| case BRW_OPCODE_IF: |
| if (inst->src[0].file != BAD_FILE) { |
| /* The instruction has an embedded compare (only allowed on gen6) */ |
| assert(intel->gen == 6); |
| gen6_IF(p, inst->conditional_mod, src[0], src[1]); |
| } else { |
| struct brw_instruction *brw_inst = brw_IF(p, BRW_EXECUTE_8); |
| brw_inst->header.predicate_control = inst->predicate; |
| } |
| break; |
| |
| case BRW_OPCODE_ELSE: |
| brw_ELSE(p); |
| break; |
| case BRW_OPCODE_ENDIF: |
| brw_ENDIF(p); |
| break; |
| |
| case BRW_OPCODE_DO: |
| brw_DO(p, BRW_EXECUTE_8); |
| break; |
| |
| case BRW_OPCODE_BREAK: |
| brw_BREAK(p); |
| brw_set_predicate_control(p, BRW_PREDICATE_NONE); |
| break; |
| case BRW_OPCODE_CONTINUE: |
| /* FINISHME: We need to write the loop instruction support still. */ |
| if (intel->gen >= 6) |
| gen6_CONT(p); |
| else |
| brw_CONT(p); |
| brw_set_predicate_control(p, BRW_PREDICATE_NONE); |
| break; |
| |
| case BRW_OPCODE_WHILE: |
| brw_WHILE(p); |
| break; |
| |
| default: |
| generate_vs_instruction(inst, dst, src); |
| break; |
| } |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_VS)) { |
| for (unsigned int i = last_native_inst; i < p->nr_insn; i++) { |
| if (0) { |
| printf("0x%08x 0x%08x 0x%08x 0x%08x ", |
| ((uint32_t *)&p->store[i])[3], |
| ((uint32_t *)&p->store[i])[2], |
| ((uint32_t *)&p->store[i])[1], |
| ((uint32_t *)&p->store[i])[0]); |
| } |
| brw_disasm(stdout, &p->store[i], intel->gen); |
| } |
| } |
| |
| last_native_inst = p->nr_insn; |
| } |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_VS)) { |
| printf("\n"); |
| } |
| |
| brw_set_uip_jip(p); |
| |
| /* OK, while the INTEL_DEBUG=vs above is very nice for debugging VS |
| * emit issues, it doesn't get the jump distances into the output, |
| * which is often something we want to debug. So this is here in |
| * case you're doing that. |
| */ |
| if (0) { |
| if (unlikely(INTEL_DEBUG & DEBUG_VS)) { |
| for (unsigned int i = 0; i < p->nr_insn; i++) { |
| printf("0x%08x 0x%08x 0x%08x 0x%08x ", |
| ((uint32_t *)&p->store[i])[3], |
| ((uint32_t *)&p->store[i])[2], |
| ((uint32_t *)&p->store[i])[1], |
| ((uint32_t *)&p->store[i])[0]); |
| brw_disasm(stdout, &p->store[i], intel->gen); |
| } |
| } |
| } |
| } |
| |
| extern "C" { |
| |
| bool |
| brw_vs_emit(struct gl_shader_program *prog, struct brw_vs_compile *c) |
| { |
| struct brw_context *brw = c->func.brw; |
| struct intel_context *intel = &c->func.brw->intel; |
| bool start_busy = false; |
| float start_time = 0; |
| |
| if (!prog) |
| return false; |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_PERF)) { |
| start_busy = (intel->batch.last_bo && |
| drm_intel_bo_busy(intel->batch.last_bo)); |
| start_time = get_time(); |
| } |
| |
| struct brw_shader *shader = |
| (brw_shader *) prog->_LinkedShaders[MESA_SHADER_VERTEX]; |
| if (!shader) |
| return false; |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_VS)) { |
| printf("GLSL IR for native vertex shader %d:\n", prog->Name); |
| _mesa_print_ir(shader->ir, NULL); |
| printf("\n\n"); |
| } |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_PERF)) { |
| if (shader->compiled_once) { |
| brw_vs_debug_recompile(brw, prog, &c->key); |
| } |
| if (start_busy && !drm_intel_bo_busy(intel->batch.last_bo)) { |
| perf_debug("VS compile took %.03f ms and stalled the GPU\n", |
| (get_time() - start_time) * 1000); |
| } |
| } |
| |
| vec4_visitor v(c, prog, shader); |
| if (!v.run()) { |
| prog->LinkStatus = false; |
| ralloc_strcat(&prog->InfoLog, v.fail_msg); |
| return false; |
| } |
| |
| shader->compiled_once = true; |
| |
| return true; |
| } |
| |
| } /* extern "C" */ |
| |
| } /* namespace brw */ |