/* * Copyright 2012 Advanced Micro Devices, Inc. * * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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. * * Authors: * Tom Stellard * Michel Dänzer * Christian König */ #include "gallivm/lp_bld_tgsi_action.h" #include "gallivm/lp_bld_const.h" #include "gallivm/lp_bld_gather.h" #include "gallivm/lp_bld_intr.h" #include "gallivm/lp_bld_logic.h" #include "gallivm/lp_bld_tgsi.h" #include "gallivm/lp_bld_arit.h" #include "radeon_llvm.h" #include "radeon_llvm_emit.h" #include "util/u_memory.h" #include "tgsi/tgsi_info.h" #include "tgsi/tgsi_parse.h" #include "tgsi/tgsi_scan.h" #include "tgsi/tgsi_dump.h" #include "radeonsi_pipe.h" #include "radeonsi_shader.h" #include "si_state.h" #include "sid.h" #include #include #include struct si_shader_context { struct radeon_llvm_context radeon_bld; struct tgsi_parse_context parse; struct tgsi_token * tokens; struct si_pipe_shader *shader; unsigned type; /* TGSI_PROCESSOR_* specifies the type of shader. */ LLVMValueRef const_md; LLVMValueRef const_resource; LLVMValueRef *constants; LLVMValueRef *resources; LLVMValueRef *samplers; }; static struct si_shader_context * si_shader_context( struct lp_build_tgsi_context * bld_base) { return (struct si_shader_context *)bld_base; } #define PERSPECTIVE_BASE 0 #define LINEAR_BASE 9 #define SAMPLE_OFFSET 0 #define CENTER_OFFSET 2 #define CENTROID_OFSET 4 #define USE_SGPR_MAX_SUFFIX_LEN 5 #define CONST_ADDR_SPACE 2 #define USER_SGPR_ADDR_SPACE 8 /** * Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad * * @param offset The offset parameter specifies the number of * elements to offset, not the number of bytes or dwords. An element is the * the type pointed to by the base_ptr parameter (e.g. int is the element of * an int* pointer) * * When LLVM lowers the load instruction, it will convert the element offset * into a dword offset automatically. * */ static LLVMValueRef build_indexed_load( struct si_shader_context * si_shader_ctx, LLVMValueRef base_ptr, LLVMValueRef offset) { struct lp_build_context * base = &si_shader_ctx->radeon_bld.soa.bld_base.base; LLVMValueRef computed_ptr = LLVMBuildGEP( base->gallivm->builder, base_ptr, &offset, 1, ""); LLVMValueRef result = LLVMBuildLoad(base->gallivm->builder, computed_ptr, ""); LLVMSetMetadata(result, 1, si_shader_ctx->const_md); return result; } static LLVMValueRef get_instance_index( struct radeon_llvm_context * radeon_bld, unsigned divisor) { struct gallivm_state * gallivm = radeon_bld->soa.bld_base.base.gallivm; LLVMValueRef result = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_INSTANCE_ID); result = LLVMBuildAdd(gallivm->builder, result, LLVMGetParam( radeon_bld->main_fn, SI_PARAM_START_INSTANCE), ""); if (divisor > 1) result = LLVMBuildUDiv(gallivm->builder, result, lp_build_const_int32(gallivm, divisor), ""); return result; } static void declare_input_vs( struct si_shader_context * si_shader_ctx, unsigned input_index, const struct tgsi_full_declaration *decl) { struct lp_build_context * base = &si_shader_ctx->radeon_bld.soa.bld_base.base; unsigned divisor = si_shader_ctx->shader->key.vs.instance_divisors[input_index]; unsigned chan; LLVMValueRef t_list_ptr; LLVMValueRef t_offset; LLVMValueRef t_list; LLVMValueRef attribute_offset; LLVMValueRef buffer_index; LLVMValueRef args[3]; LLVMTypeRef vec4_type; LLVMValueRef input; /* Load the T list */ t_list_ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_VERTEX_BUFFER); t_offset = lp_build_const_int32(base->gallivm, input_index); t_list = build_indexed_load(si_shader_ctx, t_list_ptr, t_offset); /* Build the attribute offset */ attribute_offset = lp_build_const_int32(base->gallivm, 0); if (divisor) { /* Build index from instance ID, start instance and divisor */ si_shader_ctx->shader->shader.uses_instanceid = true; buffer_index = get_instance_index(&si_shader_ctx->radeon_bld, divisor); } else { /* Load the buffer index, which is always stored in VGPR0 * for Vertex Shaders */ buffer_index = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_VERTEX_ID); } vec4_type = LLVMVectorType(base->elem_type, 4); args[0] = t_list; args[1] = attribute_offset; args[2] = buffer_index; input = build_intrinsic(base->gallivm->builder, "llvm.SI.vs.load.input", vec4_type, args, 3, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); /* Break up the vec4 into individual components */ for (chan = 0; chan < 4; chan++) { LLVMValueRef llvm_chan = lp_build_const_int32(base->gallivm, chan); /* XXX: Use a helper function for this. There is one in * tgsi_llvm.c. */ si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, chan)] = LLVMBuildExtractElement(base->gallivm->builder, input, llvm_chan, ""); } } static void declare_input_fs( struct si_shader_context * si_shader_ctx, unsigned input_index, const struct tgsi_full_declaration *decl) { struct si_shader *shader = &si_shader_ctx->shader->shader; struct lp_build_context * base = &si_shader_ctx->radeon_bld.soa.bld_base.base; struct gallivm_state * gallivm = base->gallivm; LLVMTypeRef input_type = LLVMFloatTypeInContext(gallivm->context); LLVMValueRef main_fn = si_shader_ctx->radeon_bld.main_fn; LLVMValueRef interp_param; const char * intr_name; /* This value is: * [15:0] NewPrimMask (Bit mask for each quad. It is set it the * quad begins a new primitive. Bit 0 always needs * to be unset) * [32:16] ParamOffset * */ LLVMValueRef params = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_PRIM_MASK); LLVMValueRef attr_number; unsigned chan; if (decl->Semantic.Name == TGSI_SEMANTIC_POSITION) { for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { unsigned soa_index = radeon_llvm_reg_index_soa(input_index, chan); si_shader_ctx->radeon_bld.inputs[soa_index] = LLVMGetParam(main_fn, SI_PARAM_POS_X_FLOAT + chan); if (chan == 3) /* RCP for fragcoord.w */ si_shader_ctx->radeon_bld.inputs[soa_index] = LLVMBuildFDiv(gallivm->builder, lp_build_const_float(gallivm, 1.0f), si_shader_ctx->radeon_bld.inputs[soa_index], ""); } return; } if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) { LLVMValueRef face, is_face_positive; face = LLVMGetParam(main_fn, SI_PARAM_FRONT_FACE); is_face_positive = LLVMBuildFCmp(gallivm->builder, LLVMRealUGT, face, lp_build_const_float(gallivm, 0.0f), ""); si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 0)] = LLVMBuildSelect(gallivm->builder, is_face_positive, lp_build_const_float(gallivm, 1.0f), lp_build_const_float(gallivm, 0.0f), ""); si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 1)] = si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 2)] = lp_build_const_float(gallivm, 0.0f); si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 3)] = lp_build_const_float(gallivm, 1.0f); return; } shader->input[input_index].param_offset = shader->ninterp++; attr_number = lp_build_const_int32(gallivm, shader->input[input_index].param_offset); /* XXX: Handle all possible interpolation modes */ switch (decl->Interp.Interpolate) { case TGSI_INTERPOLATE_COLOR: if (si_shader_ctx->shader->key.ps.flatshade) { interp_param = 0; } else { if (decl->Interp.Centroid) interp_param = LLVMGetParam(main_fn, SI_PARAM_PERSP_CENTROID); else interp_param = LLVMGetParam(main_fn, SI_PARAM_PERSP_CENTER); } break; case TGSI_INTERPOLATE_CONSTANT: interp_param = 0; break; case TGSI_INTERPOLATE_LINEAR: if (decl->Interp.Centroid) interp_param = LLVMGetParam(main_fn, SI_PARAM_LINEAR_CENTROID); else interp_param = LLVMGetParam(main_fn, SI_PARAM_LINEAR_CENTER); break; case TGSI_INTERPOLATE_PERSPECTIVE: if (decl->Interp.Centroid) interp_param = LLVMGetParam(main_fn, SI_PARAM_PERSP_CENTROID); else interp_param = LLVMGetParam(main_fn, SI_PARAM_PERSP_CENTER); break; default: fprintf(stderr, "Warning: Unhandled interpolation mode.\n"); return; } intr_name = interp_param ? "llvm.SI.fs.interp" : "llvm.SI.fs.constant"; /* XXX: Could there be more than TGSI_NUM_CHANNELS (4) ? */ if (decl->Semantic.Name == TGSI_SEMANTIC_COLOR && si_shader_ctx->shader->key.ps.color_two_side) { LLVMValueRef args[4]; LLVMValueRef face, is_face_positive; LLVMValueRef back_attr_number = lp_build_const_int32(gallivm, shader->input[input_index].param_offset + 1); face = LLVMGetParam(main_fn, SI_PARAM_FRONT_FACE); is_face_positive = LLVMBuildFCmp(gallivm->builder, LLVMRealUGT, face, lp_build_const_float(gallivm, 0.0f), ""); args[2] = params; args[3] = interp_param; for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { LLVMValueRef llvm_chan = lp_build_const_int32(gallivm, chan); unsigned soa_index = radeon_llvm_reg_index_soa(input_index, chan); LLVMValueRef front, back; args[0] = llvm_chan; args[1] = attr_number; front = build_intrinsic(base->gallivm->builder, intr_name, input_type, args, args[3] ? 4 : 3, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); args[1] = back_attr_number; back = build_intrinsic(base->gallivm->builder, intr_name, input_type, args, args[3] ? 4 : 3, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); si_shader_ctx->radeon_bld.inputs[soa_index] = LLVMBuildSelect(gallivm->builder, is_face_positive, front, back, ""); } shader->ninterp++; } else { for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { LLVMValueRef args[4]; LLVMValueRef llvm_chan = lp_build_const_int32(gallivm, chan); unsigned soa_index = radeon_llvm_reg_index_soa(input_index, chan); args[0] = llvm_chan; args[1] = attr_number; args[2] = params; args[3] = interp_param; si_shader_ctx->radeon_bld.inputs[soa_index] = build_intrinsic(base->gallivm->builder, intr_name, input_type, args, args[3] ? 4 : 3, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); } } } static void declare_input( struct radeon_llvm_context * radeon_bld, unsigned input_index, const struct tgsi_full_declaration *decl) { struct si_shader_context * si_shader_ctx = si_shader_context(&radeon_bld->soa.bld_base); if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX) { declare_input_vs(si_shader_ctx, input_index, decl); } else if (si_shader_ctx->type == TGSI_PROCESSOR_FRAGMENT) { declare_input_fs(si_shader_ctx, input_index, decl); } else { fprintf(stderr, "Warning: Unsupported shader type,\n"); } } static void declare_system_value( struct radeon_llvm_context * radeon_bld, unsigned index, const struct tgsi_full_declaration *decl) { LLVMValueRef value = 0; switch (decl->Semantic.Name) { case TGSI_SEMANTIC_INSTANCEID: value = get_instance_index(radeon_bld, 1); break; case TGSI_SEMANTIC_VERTEXID: value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_VERTEX_ID); break; default: assert(!"unknown system value"); return; } radeon_bld->system_values[index] = value; } static LLVMValueRef fetch_constant( struct lp_build_tgsi_context * bld_base, const struct tgsi_full_src_register *reg, enum tgsi_opcode_type type, unsigned swizzle) { struct si_shader_context *si_shader_ctx = si_shader_context(bld_base); struct lp_build_context * base = &bld_base->base; const struct tgsi_ind_register *ireg = ®->Indirect; unsigned idx; LLVMValueRef args[2]; LLVMValueRef addr; LLVMValueRef result; if (swizzle == LP_CHAN_ALL) { unsigned chan; LLVMValueRef values[4]; for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) values[chan] = fetch_constant(bld_base, reg, type, chan); return lp_build_gather_values(bld_base->base.gallivm, values, 4); } idx = reg->Register.Index * 4 + swizzle; if (!reg->Register.Indirect) return bitcast(bld_base, type, si_shader_ctx->constants[idx]); args[0] = si_shader_ctx->const_resource; args[1] = lp_build_const_int32(base->gallivm, idx * 4); addr = si_shader_ctx->radeon_bld.soa.addr[ireg->Index][ireg->Swizzle]; addr = LLVMBuildLoad(base->gallivm->builder, addr, "load addr reg"); addr = lp_build_mul_imm(&bld_base->uint_bld, addr, 16); args[1] = lp_build_add(&bld_base->uint_bld, addr, args[1]); result = build_intrinsic(base->gallivm->builder, "llvm.SI.load.const", base->elem_type, args, 2, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); return bitcast(bld_base, type, result); } /* Initialize arguments for the shader export intrinsic */ static void si_llvm_init_export_args(struct lp_build_tgsi_context *bld_base, struct tgsi_full_declaration *d, unsigned index, unsigned target, LLVMValueRef *args) { struct si_shader_context *si_shader_ctx = si_shader_context(bld_base); struct lp_build_context *uint = &si_shader_ctx->radeon_bld.soa.bld_base.uint_bld; struct lp_build_context *base = &bld_base->base; unsigned compressed = 0; unsigned chan; if (si_shader_ctx->type == TGSI_PROCESSOR_FRAGMENT) { int cbuf = target - V_008DFC_SQ_EXP_MRT; if (cbuf >= 0 && cbuf < 8) { compressed = (si_shader_ctx->shader->key.ps.export_16bpc >> cbuf) & 0x1; if (compressed) si_shader_ctx->shader->spi_shader_col_format |= V_028714_SPI_SHADER_FP16_ABGR << (4 * cbuf); else si_shader_ctx->shader->spi_shader_col_format |= V_028714_SPI_SHADER_32_ABGR << (4 * cbuf); } } if (compressed) { /* Pixel shader needs to pack output values before export */ for (chan = 0; chan < 2; chan++ ) { LLVMValueRef *out_ptr = si_shader_ctx->radeon_bld.soa.outputs[index]; args[0] = LLVMBuildLoad(base->gallivm->builder, out_ptr[2 * chan], ""); args[1] = LLVMBuildLoad(base->gallivm->builder, out_ptr[2 * chan + 1], ""); args[chan + 5] = build_intrinsic(base->gallivm->builder, "llvm.SI.packf16", LLVMInt32TypeInContext(base->gallivm->context), args, 2, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); args[chan + 7] = args[chan + 5] = LLVMBuildBitCast(base->gallivm->builder, args[chan + 5], LLVMFloatTypeInContext(base->gallivm->context), ""); } /* Set COMPR flag */ args[4] = uint->one; } else { for (chan = 0; chan < 4; chan++ ) { LLVMValueRef out_ptr = si_shader_ctx->radeon_bld.soa.outputs[index][chan]; /* +5 because the first output value will be * the 6th argument to the intrinsic. */ args[chan + 5] = LLVMBuildLoad(base->gallivm->builder, out_ptr, ""); } /* Clear COMPR flag */ args[4] = uint->zero; } /* XXX: This controls which components of the output * registers actually get exported. (e.g bit 0 means export * X component, bit 1 means export Y component, etc.) I'm * hard coding this to 0xf for now. In the future, we might * want to do something else. */ args[0] = lp_build_const_int32(base->gallivm, 0xf); /* Specify whether the EXEC mask represents the valid mask */ args[1] = uint->zero; /* Specify whether this is the last export */ args[2] = uint->zero; /* Specify the target we are exporting */ args[3] = lp_build_const_int32(base->gallivm, target); /* XXX: We probably need to keep track of the output * values, so we know what we are passing to the next * stage. */ } static void si_alpha_test(struct lp_build_tgsi_context *bld_base, unsigned index) { struct si_shader_context *si_shader_ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = bld_base->base.gallivm; if (si_shader_ctx->shader->key.ps.alpha_func != PIPE_FUNC_NEVER) { LLVMValueRef out_ptr = si_shader_ctx->radeon_bld.soa.outputs[index][3]; LLVMValueRef alpha_pass = lp_build_cmp(&bld_base->base, si_shader_ctx->shader->key.ps.alpha_func, LLVMBuildLoad(gallivm->builder, out_ptr, ""), lp_build_const_float(gallivm, si_shader_ctx->shader->key.ps.alpha_ref)); LLVMValueRef arg = lp_build_select(&bld_base->base, alpha_pass, lp_build_const_float(gallivm, 1.0f), lp_build_const_float(gallivm, -1.0f)); build_intrinsic(gallivm->builder, "llvm.AMDGPU.kill", LLVMVoidTypeInContext(gallivm->context), &arg, 1, 0); } else { build_intrinsic(gallivm->builder, "llvm.AMDGPU.kilp", LLVMVoidTypeInContext(gallivm->context), NULL, 0, 0); } } /* XXX: This is partially implemented for VS only at this point. It is not complete */ static void si_llvm_emit_epilogue(struct lp_build_tgsi_context * bld_base) { struct si_shader_context * si_shader_ctx = si_shader_context(bld_base); struct si_shader * shader = &si_shader_ctx->shader->shader; struct lp_build_context * base = &bld_base->base; struct lp_build_context * uint = &si_shader_ctx->radeon_bld.soa.bld_base.uint_bld; struct tgsi_parse_context *parse = &si_shader_ctx->parse; LLVMValueRef args[9]; LLVMValueRef last_args[9] = { 0 }; unsigned color_count = 0; unsigned param_count = 0; int depth_index = -1, stencil_index = -1; while (!tgsi_parse_end_of_tokens(parse)) { struct tgsi_full_declaration *d = &parse->FullToken.FullDeclaration; unsigned target; unsigned index; int i; tgsi_parse_token(parse); if (parse->FullToken.Token.Type == TGSI_TOKEN_TYPE_PROPERTY && parse->FullToken.FullProperty.Property.PropertyName == TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS) shader->fs_write_all = TRUE; if (parse->FullToken.Token.Type != TGSI_TOKEN_TYPE_DECLARATION) continue; switch (d->Declaration.File) { case TGSI_FILE_INPUT: i = shader->ninput++; shader->input[i].name = d->Semantic.Name; shader->input[i].sid = d->Semantic.Index; shader->input[i].interpolate = d->Interp.Interpolate; shader->input[i].centroid = d->Interp.Centroid; continue; case TGSI_FILE_OUTPUT: i = shader->noutput++; shader->output[i].name = d->Semantic.Name; shader->output[i].sid = d->Semantic.Index; shader->output[i].interpolate = d->Interp.Interpolate; break; default: continue; } for (index = d->Range.First; index <= d->Range.Last; index++) { /* Select the correct target */ switch(d->Semantic.Name) { case TGSI_SEMANTIC_PSIZE: target = V_008DFC_SQ_EXP_POS; break; case TGSI_SEMANTIC_POSITION: if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX) { target = V_008DFC_SQ_EXP_POS; break; } else { depth_index = index; continue; } case TGSI_SEMANTIC_STENCIL: stencil_index = index; continue; case TGSI_SEMANTIC_COLOR: if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX) { case TGSI_SEMANTIC_BCOLOR: target = V_008DFC_SQ_EXP_PARAM + param_count; shader->output[i].param_offset = param_count; param_count++; } else { target = V_008DFC_SQ_EXP_MRT + color_count; if (color_count == 0 && si_shader_ctx->shader->key.ps.alpha_func != PIPE_FUNC_ALWAYS) si_alpha_test(bld_base, index); color_count++; } break; case TGSI_SEMANTIC_FOG: case TGSI_SEMANTIC_GENERIC: target = V_008DFC_SQ_EXP_PARAM + param_count; shader->output[i].param_offset = param_count; param_count++; break; default: target = 0; fprintf(stderr, "Warning: SI unhandled output type:%d\n", d->Semantic.Name); } si_llvm_init_export_args(bld_base, d, index, target, args); if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX ? (d->Semantic.Name == TGSI_SEMANTIC_POSITION) : (d->Semantic.Name == TGSI_SEMANTIC_COLOR)) { if (last_args[0]) { lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", LLVMVoidTypeInContext(base->gallivm->context), last_args, 9); } memcpy(last_args, args, sizeof(args)); } else { lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", LLVMVoidTypeInContext(base->gallivm->context), args, 9); } } } if (depth_index >= 0 || stencil_index >= 0) { LLVMValueRef out_ptr; unsigned mask = 0; /* Specify the target we are exporting */ args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_MRTZ); if (depth_index >= 0) { out_ptr = si_shader_ctx->radeon_bld.soa.outputs[depth_index][2]; args[5] = LLVMBuildLoad(base->gallivm->builder, out_ptr, ""); mask |= 0x1; if (stencil_index < 0) { args[6] = args[7] = args[8] = args[5]; } } if (stencil_index >= 0) { out_ptr = si_shader_ctx->radeon_bld.soa.outputs[stencil_index][1]; args[7] = args[8] = args[6] = LLVMBuildLoad(base->gallivm->builder, out_ptr, ""); mask |= 0x2; if (depth_index < 0) args[5] = args[6]; } /* Specify which components to enable */ args[0] = lp_build_const_int32(base->gallivm, mask); args[1] = args[2] = args[4] = uint->zero; if (last_args[0]) lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", LLVMVoidTypeInContext(base->gallivm->context), args, 9); else memcpy(last_args, args, sizeof(args)); } if (!last_args[0]) { assert(si_shader_ctx->type == TGSI_PROCESSOR_FRAGMENT); /* Specify which components to enable */ last_args[0] = lp_build_const_int32(base->gallivm, 0x0); /* Specify the target we are exporting */ last_args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_MRT); /* Set COMPR flag to zero to export data as 32-bit */ last_args[4] = uint->zero; /* dummy bits */ last_args[5]= uint->zero; last_args[6]= uint->zero; last_args[7]= uint->zero; last_args[8]= uint->zero; si_shader_ctx->shader->spi_shader_col_format |= V_028714_SPI_SHADER_32_ABGR; } /* Specify whether the EXEC mask represents the valid mask */ last_args[1] = lp_build_const_int32(base->gallivm, si_shader_ctx->type == TGSI_PROCESSOR_FRAGMENT); if (shader->fs_write_all && shader->nr_cbufs > 1) { int i; /* Specify that this is not yet the last export */ last_args[2] = lp_build_const_int32(base->gallivm, 0); for (i = 1; i < shader->nr_cbufs; i++) { /* Specify the target we are exporting */ last_args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_MRT + i); lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", LLVMVoidTypeInContext(base->gallivm->context), last_args, 9); si_shader_ctx->shader->spi_shader_col_format |= si_shader_ctx->shader->spi_shader_col_format << 4; } last_args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_MRT); } /* Specify that this is the last export */ last_args[2] = lp_build_const_int32(base->gallivm, 1); lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", LLVMVoidTypeInContext(base->gallivm->context), last_args, 9); /* XXX: Look up what this function does */ /* ctx->shader->output[i].spi_sid = r600_spi_sid(&ctx->shader->output[i]);*/ } static void tex_fetch_args( struct lp_build_tgsi_context * bld_base, struct lp_build_emit_data * emit_data) { struct si_shader_context *si_shader_ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = bld_base->base.gallivm; const struct tgsi_full_instruction * inst = emit_data->inst; unsigned opcode = inst->Instruction.Opcode; unsigned target = inst->Texture.Texture; LLVMValueRef coords[4]; LLVMValueRef address[16]; unsigned count = 0; unsigned chan; /* Fetch and project texture coordinates */ coords[3] = lp_build_emit_fetch(bld_base, emit_data->inst, 0, TGSI_CHAN_W); for (chan = 0; chan < 3; chan++ ) { coords[chan] = lp_build_emit_fetch(bld_base, emit_data->inst, 0, chan); if (opcode == TGSI_OPCODE_TXP) coords[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_DIV, coords[chan], coords[3]); } if (opcode == TGSI_OPCODE_TXP) coords[3] = bld_base->base.one; /* Pack LOD bias value */ if (opcode == TGSI_OPCODE_TXB) address[count++] = coords[3]; if ((target == TGSI_TEXTURE_CUBE || target == TGSI_TEXTURE_SHADOWCUBE) && opcode != TGSI_OPCODE_TXQ) radeon_llvm_emit_prepare_cube_coords(bld_base, emit_data, coords); /* Pack depth comparison value */ switch (target) { case TGSI_TEXTURE_SHADOW1D: case TGSI_TEXTURE_SHADOW1D_ARRAY: case TGSI_TEXTURE_SHADOW2D: case TGSI_TEXTURE_SHADOWRECT: address[count++] = coords[2]; break; case TGSI_TEXTURE_SHADOWCUBE: case TGSI_TEXTURE_SHADOW2D_ARRAY: address[count++] = coords[3]; break; case TGSI_TEXTURE_SHADOWCUBE_ARRAY: address[count++] = lp_build_emit_fetch(bld_base, inst, 1, 0); } /* Pack texture coordinates */ address[count++] = coords[0]; switch (target) { case TGSI_TEXTURE_2D: case TGSI_TEXTURE_2D_ARRAY: case TGSI_TEXTURE_3D: case TGSI_TEXTURE_CUBE: case TGSI_TEXTURE_RECT: case TGSI_TEXTURE_SHADOW2D: case TGSI_TEXTURE_SHADOWRECT: case TGSI_TEXTURE_SHADOW2D_ARRAY: case TGSI_TEXTURE_SHADOWCUBE: case TGSI_TEXTURE_2D_MSAA: case TGSI_TEXTURE_2D_ARRAY_MSAA: case TGSI_TEXTURE_CUBE_ARRAY: case TGSI_TEXTURE_SHADOWCUBE_ARRAY: address[count++] = coords[1]; } switch (target) { case TGSI_TEXTURE_3D: case TGSI_TEXTURE_CUBE: case TGSI_TEXTURE_SHADOWCUBE: case TGSI_TEXTURE_CUBE_ARRAY: case TGSI_TEXTURE_SHADOWCUBE_ARRAY: address[count++] = coords[2]; } /* Pack array slice */ switch (target) { case TGSI_TEXTURE_1D_ARRAY: address[count++] = coords[1]; } switch (target) { case TGSI_TEXTURE_2D_ARRAY: case TGSI_TEXTURE_2D_ARRAY_MSAA: case TGSI_TEXTURE_SHADOW2D_ARRAY: address[count++] = coords[2]; } switch (target) { case TGSI_TEXTURE_CUBE_ARRAY: case TGSI_TEXTURE_SHADOW1D_ARRAY: case TGSI_TEXTURE_SHADOWCUBE_ARRAY: address[count++] = coords[3]; } /* Pack LOD */ if (opcode == TGSI_OPCODE_TXL) address[count++] = coords[3]; if (count > 16) { assert(!"Cannot handle more than 16 texture address parameters"); count = 16; } for (chan = 0; chan < count; chan++ ) { address[chan] = LLVMBuildBitCast(gallivm->builder, address[chan], LLVMInt32TypeInContext(gallivm->context), ""); } /* Pad to power of two vector */ while (count < util_next_power_of_two(count)) address[count++] = LLVMGetUndef(LLVMInt32TypeInContext(gallivm->context)); emit_data->args[0] = lp_build_gather_values(gallivm, address, count); /* Resource */ emit_data->args[1] = si_shader_ctx->resources[emit_data->inst->Src[1].Register.Index]; /* Sampler */ emit_data->args[2] = si_shader_ctx->samplers[emit_data->inst->Src[1].Register.Index]; /* Dimensions */ emit_data->args[3] = lp_build_const_int32(bld_base->base.gallivm, target); emit_data->arg_count = 4; emit_data->dst_type = LLVMVectorType( LLVMFloatTypeInContext(bld_base->base.gallivm->context), 4); } static void build_tex_intrinsic(const struct lp_build_tgsi_action * action, struct lp_build_tgsi_context * bld_base, struct lp_build_emit_data * emit_data) { struct lp_build_context * base = &bld_base->base; char intr_name[23]; sprintf(intr_name, "%sv%ui32", action->intr_name, LLVMGetVectorSize(LLVMTypeOf(emit_data->args[0]))); emit_data->output[emit_data->chan] = build_intrinsic( base->gallivm->builder, intr_name, emit_data->dst_type, emit_data->args, emit_data->arg_count, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); } static const struct lp_build_tgsi_action tex_action = { .fetch_args = tex_fetch_args, .emit = build_tex_intrinsic, .intr_name = "llvm.SI.sample." }; static const struct lp_build_tgsi_action txb_action = { .fetch_args = tex_fetch_args, .emit = build_tex_intrinsic, .intr_name = "llvm.SI.sampleb." }; static const struct lp_build_tgsi_action txl_action = { .fetch_args = tex_fetch_args, .emit = build_tex_intrinsic, .intr_name = "llvm.SI.samplel." }; static void create_meta_data(struct si_shader_context *si_shader_ctx) { struct gallivm_state *gallivm = si_shader_ctx->radeon_bld.soa.bld_base.base.gallivm; LLVMValueRef args[3]; args[0] = LLVMMDStringInContext(gallivm->context, "const", 5); args[1] = 0; args[2] = lp_build_const_int32(gallivm, 1); si_shader_ctx->const_md = LLVMMDNodeInContext(gallivm->context, args, 3); } static void create_function(struct si_shader_context *si_shader_ctx) { struct gallivm_state *gallivm = si_shader_ctx->radeon_bld.soa.bld_base.base.gallivm; LLVMTypeRef params[20], f32, i8, i32, v2i32, v3i32; unsigned i; i8 = LLVMInt8TypeInContext(gallivm->context); i32 = LLVMInt32TypeInContext(gallivm->context); f32 = LLVMFloatTypeInContext(gallivm->context); v2i32 = LLVMVectorType(i32, 2); v3i32 = LLVMVectorType(i32, 3); params[SI_PARAM_CONST] = LLVMPointerType(LLVMVectorType(i8, 16), CONST_ADDR_SPACE); params[SI_PARAM_SAMPLER] = params[SI_PARAM_CONST]; params[SI_PARAM_RESOURCE] = LLVMPointerType(LLVMVectorType(i8, 32), CONST_ADDR_SPACE); if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX) { params[SI_PARAM_VERTEX_BUFFER] = params[SI_PARAM_SAMPLER]; params[SI_PARAM_START_INSTANCE] = i32; params[SI_PARAM_VERTEX_ID] = i32; params[SI_PARAM_DUMMY_0] = i32; params[SI_PARAM_DUMMY_1] = i32; params[SI_PARAM_INSTANCE_ID] = i32; radeon_llvm_create_func(&si_shader_ctx->radeon_bld, params, 9); } else { params[SI_PARAM_PRIM_MASK] = i32; params[SI_PARAM_PERSP_SAMPLE] = v2i32; params[SI_PARAM_PERSP_CENTER] = v2i32; params[SI_PARAM_PERSP_CENTROID] = v2i32; params[SI_PARAM_PERSP_PULL_MODEL] = v3i32; params[SI_PARAM_LINEAR_SAMPLE] = v2i32; params[SI_PARAM_LINEAR_CENTER] = v2i32; params[SI_PARAM_LINEAR_CENTROID] = v2i32; params[SI_PARAM_LINE_STIPPLE_TEX] = f32; params[SI_PARAM_POS_X_FLOAT] = f32; params[SI_PARAM_POS_Y_FLOAT] = f32; params[SI_PARAM_POS_Z_FLOAT] = f32; params[SI_PARAM_POS_W_FLOAT] = f32; params[SI_PARAM_FRONT_FACE] = f32; params[SI_PARAM_ANCILLARY] = f32; params[SI_PARAM_SAMPLE_COVERAGE] = f32; params[SI_PARAM_POS_FIXED_PT] = f32; radeon_llvm_create_func(&si_shader_ctx->radeon_bld, params, 20); } radeon_llvm_shader_type(si_shader_ctx->radeon_bld.main_fn, si_shader_ctx->type); for (i = SI_PARAM_CONST; i <= SI_PARAM_VERTEX_BUFFER; ++i) { LLVMValueRef P = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, i); LLVMAddAttribute(P, LLVMInRegAttribute); } if (si_shader_ctx->type == TGSI_PROCESSOR_VERTEX) { LLVMValueRef P = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_START_INSTANCE); LLVMAddAttribute(P, LLVMInRegAttribute); } } static void preload_constants(struct si_shader_context *si_shader_ctx) { struct lp_build_tgsi_context * bld_base = &si_shader_ctx->radeon_bld.soa.bld_base; struct gallivm_state * gallivm = bld_base->base.gallivm; const struct tgsi_shader_info * info = bld_base->info; unsigned i, num_const = info->file_max[TGSI_FILE_CONSTANT] + 1; LLVMValueRef ptr; if (num_const == 0) return; /* Allocate space for the constant values */ si_shader_ctx->constants = CALLOC(num_const * 4, sizeof(LLVMValueRef)); /* Load the resource descriptor */ ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_CONST); si_shader_ctx->const_resource = build_indexed_load(si_shader_ctx, ptr, bld_base->uint_bld.zero); /* Load the constants, we rely on the code sinking to do the rest */ for (i = 0; i < num_const * 4; ++i) { LLVMValueRef args[2] = { si_shader_ctx->const_resource, lp_build_const_int32(gallivm, i * 4) }; si_shader_ctx->constants[i] = build_intrinsic(gallivm->builder, "llvm.SI.load.const", bld_base->base.elem_type, args, 2, LLVMReadNoneAttribute | LLVMNoUnwindAttribute); } } static void preload_samplers(struct si_shader_context *si_shader_ctx) { struct lp_build_tgsi_context * bld_base = &si_shader_ctx->radeon_bld.soa.bld_base; struct gallivm_state * gallivm = bld_base->base.gallivm; const struct tgsi_shader_info * info = bld_base->info; unsigned i, num_samplers = info->file_max[TGSI_FILE_SAMPLER] + 1; LLVMValueRef res_ptr, samp_ptr; LLVMValueRef offset; if (num_samplers == 0) return; /* Allocate space for the values */ si_shader_ctx->resources = CALLOC(num_samplers, sizeof(LLVMValueRef)); si_shader_ctx->samplers = CALLOC(num_samplers, sizeof(LLVMValueRef)); res_ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_RESOURCE); samp_ptr = LLVMGetParam(si_shader_ctx->radeon_bld.main_fn, SI_PARAM_SAMPLER); /* Load the resources and samplers, we rely on the code sinking to do the rest */ for (i = 0; i < num_samplers; ++i) { /* Resource */ offset = lp_build_const_int32(gallivm, i); si_shader_ctx->resources[i] = build_indexed_load(si_shader_ctx, res_ptr, offset); /* Sampler */ offset = lp_build_const_int32(gallivm, i); si_shader_ctx->samplers[i] = build_indexed_load(si_shader_ctx, samp_ptr, offset); } } int si_compile_llvm(struct r600_context *rctx, struct si_pipe_shader *shader, LLVMModuleRef mod) { unsigned i; uint32_t *ptr; bool dump; struct radeon_llvm_binary binary; dump = debug_get_bool_option("RADEON_DUMP_SHADERS", FALSE); memset(&binary, 0, sizeof(binary)); radeon_llvm_compile(mod, &binary, r600_get_llvm_processor_name(rctx->screen->family), dump); if (dump) { fprintf(stderr, "SI CODE:\n"); for (i = 0; i < binary.code_size; i+=4 ) { fprintf(stderr, "%02x%02x%02x%02x\n", binary.code[i + 3], binary.code[i + 2], binary.code[i + 1], binary.code[i]); } } /* XXX: We may be able to emit some of these values directly rather than * extracting fields to be emitted later. */ for (i = 0; i < binary.config_size; i+= 8) { unsigned reg = util_le32_to_cpu(*(uint32_t*)(binary.config + i)); unsigned value = util_le32_to_cpu(*(uint32_t*)(binary.config + i + 4)); switch (reg) { case R_00B028_SPI_SHADER_PGM_RSRC1_PS: case R_00B128_SPI_SHADER_PGM_RSRC1_VS: case R_00B228_SPI_SHADER_PGM_RSRC1_GS: case R_00B848_COMPUTE_PGM_RSRC1: shader->num_sgprs = (G_00B028_SGPRS(value) + 1) * 8; shader->num_vgprs = (G_00B028_VGPRS(value) + 1) * 4; break; case R_0286CC_SPI_PS_INPUT_ENA: shader->spi_ps_input_ena = value; break; default: fprintf(stderr, "Warning: Compiler emitted unknown " "config register: 0x%x\n", reg); break; } } /* copy new shader */ si_resource_reference(&shader->bo, NULL); shader->bo = si_resource_create_custom(rctx->context.screen, PIPE_USAGE_IMMUTABLE, binary.code_size); if (shader->bo == NULL) { return -ENOMEM; } ptr = (uint32_t*)rctx->ws->buffer_map(shader->bo->cs_buf, rctx->cs, PIPE_TRANSFER_WRITE); if (0 /*R600_BIG_ENDIAN*/) { for (i = 0; i < binary.code_size / 4; ++i) { ptr[i] = util_bswap32(*(uint32_t*)(binary.code + i*4)); } } else { memcpy(ptr, binary.code, binary.code_size); } rctx->ws->buffer_unmap(shader->bo->cs_buf); free(binary.code); free(binary.config); return 0; } int si_pipe_shader_create( struct pipe_context *ctx, struct si_pipe_shader *shader) { struct r600_context *rctx = (struct r600_context*)ctx; struct si_pipe_shader_selector *sel = shader->selector; struct si_shader_context si_shader_ctx; struct tgsi_shader_info shader_info; struct lp_build_tgsi_context * bld_base; LLVMModuleRef mod; bool dump; int r = 0; dump = debug_get_bool_option("RADEON_DUMP_SHADERS", FALSE); assert(shader->shader.noutput == 0); assert(shader->shader.ninterp == 0); assert(shader->shader.ninput == 0); memset(&si_shader_ctx, 0, sizeof(si_shader_ctx)); radeon_llvm_context_init(&si_shader_ctx.radeon_bld); bld_base = &si_shader_ctx.radeon_bld.soa.bld_base; tgsi_scan_shader(sel->tokens, &shader_info); shader->shader.uses_kill = shader_info.uses_kill; shader->shader.uses_instanceid = shader_info.uses_instanceid; bld_base->info = &shader_info; bld_base->emit_fetch_funcs[TGSI_FILE_CONSTANT] = fetch_constant; bld_base->emit_epilogue = si_llvm_emit_epilogue; bld_base->op_actions[TGSI_OPCODE_TEX] = tex_action; bld_base->op_actions[TGSI_OPCODE_TXB] = txb_action; bld_base->op_actions[TGSI_OPCODE_TXL] = txl_action; bld_base->op_actions[TGSI_OPCODE_TXP] = tex_action; si_shader_ctx.radeon_bld.load_input = declare_input; si_shader_ctx.radeon_bld.load_system_value = declare_system_value; si_shader_ctx.tokens = sel->tokens; tgsi_parse_init(&si_shader_ctx.parse, si_shader_ctx.tokens); si_shader_ctx.shader = shader; si_shader_ctx.type = si_shader_ctx.parse.FullHeader.Processor.Processor; create_meta_data(&si_shader_ctx); create_function(&si_shader_ctx); preload_constants(&si_shader_ctx); preload_samplers(&si_shader_ctx); shader->shader.nr_cbufs = rctx->framebuffer.nr_cbufs; /* Dump TGSI code before doing TGSI->LLVM conversion in case the * conversion fails. */ if (dump) { tgsi_dump(sel->tokens, 0); } if (!lp_build_tgsi_llvm(bld_base, sel->tokens)) { fprintf(stderr, "Failed to translate shader from TGSI to LLVM\n"); FREE(si_shader_ctx.constants); FREE(si_shader_ctx.resources); FREE(si_shader_ctx.samplers); return -EINVAL; } radeon_llvm_finalize_module(&si_shader_ctx.radeon_bld); mod = bld_base->base.gallivm->module; r = si_compile_llvm(rctx, shader, mod); radeon_llvm_dispose(&si_shader_ctx.radeon_bld); tgsi_parse_free(&si_shader_ctx.parse); FREE(si_shader_ctx.constants); FREE(si_shader_ctx.resources); FREE(si_shader_ctx.samplers); return r; } void si_pipe_shader_destroy(struct pipe_context *ctx, struct si_pipe_shader *shader) { si_resource_reference(&shader->bo, NULL); }