/************************************************************************** * * Copyright 2010 VMware. * All Rights Reserved. * * 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, 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 VMWARE AND/OR ITS 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. * **************************************************************************/ #include "util/u_math.h" #include "util/u_memory.h" #include "util/u_simple_list.h" #include "os/os_time.h" #include "gallivm/lp_bld_arit.h" #include "gallivm/lp_bld_const.h" #include "gallivm/lp_bld_debug.h" #include "gallivm/lp_bld_init.h" #include "gallivm/lp_bld_intr.h" #include "gallivm/lp_bld_flow.h" #include "gallivm/lp_bld_type.h" #include /* for LLVMVerifyFunction */ #include "lp_perf.h" #include "lp_debug.h" #include "lp_flush.h" #include "lp_screen.h" #include "lp_context.h" #include "lp_state.h" #include "lp_state_fs.h" #include "lp_state_setup.h" /* currently organized to interpolate full float[4] attributes even * when some elements are unused. Later, can pack vertex data more * closely. */ struct lp_setup_args { /* Function arguments: */ LLVMValueRef v0; LLVMValueRef v1; LLVMValueRef v2; LLVMValueRef facing; /* boolean */ LLVMValueRef a0; LLVMValueRef dadx; LLVMValueRef dady; /* Derived: */ LLVMValueRef x0_center; LLVMValueRef y0_center; LLVMValueRef dy20_ooa; LLVMValueRef dy01_ooa; LLVMValueRef dx20_ooa; LLVMValueRef dx01_ooa; /* Temporary, per-attribute: */ LLVMValueRef v0a; LLVMValueRef v1a; LLVMValueRef v2a; }; static LLVMTypeRef type4f(struct gallivm_state *gallivm) { return LLVMVectorType(LLVMFloatTypeInContext(gallivm->context), 4); } /* Equivalent of _mm_setr_ps(a,b,c,d) */ static LLVMValueRef vec4f(struct gallivm_state *gallivm, LLVMValueRef a, LLVMValueRef b, LLVMValueRef c, LLVMValueRef d, const char *name) { LLVMBuilderRef bld = gallivm->builder; LLVMValueRef i0 = lp_build_const_int32(gallivm, 0); LLVMValueRef i1 = lp_build_const_int32(gallivm, 1); LLVMValueRef i2 = lp_build_const_int32(gallivm, 2); LLVMValueRef i3 = lp_build_const_int32(gallivm, 3); LLVMValueRef res = LLVMGetUndef(type4f(gallivm)); res = LLVMBuildInsertElement(bld, res, a, i0, ""); res = LLVMBuildInsertElement(bld, res, b, i1, ""); res = LLVMBuildInsertElement(bld, res, c, i2, ""); res = LLVMBuildInsertElement(bld, res, d, i3, name); return res; } /* Equivalent of _mm_set1_ps(a) */ static LLVMValueRef vec4f_from_scalar(struct gallivm_state *gallivm, LLVMValueRef a, const char *name) { LLVMBuilderRef bld = gallivm->builder; LLVMValueRef res = LLVMGetUndef(type4f(gallivm)); int i; for(i = 0; i < 4; ++i) { LLVMValueRef index = lp_build_const_int32(gallivm, i); res = LLVMBuildInsertElement(bld, res, a, index, i == 3 ? name : ""); } return res; } static void store_coef(struct gallivm_state *gallivm, struct lp_setup_args *args, unsigned slot, LLVMValueRef a0, LLVMValueRef dadx, LLVMValueRef dady) { LLVMBuilderRef builder = gallivm->builder; LLVMValueRef idx = lp_build_const_int32(gallivm, slot); LLVMBuildStore(builder, a0, LLVMBuildGEP(builder, args->a0, &idx, 1, "")); LLVMBuildStore(builder, dadx, LLVMBuildGEP(builder, args->dadx, &idx, 1, "")); LLVMBuildStore(builder, dady, LLVMBuildGEP(builder, args->dady, &idx, 1, "")); } static void emit_constant_coef4(struct gallivm_state *gallivm, struct lp_setup_args *args, unsigned slot, LLVMValueRef vert) { LLVMValueRef zero = lp_build_const_float(gallivm, 0.0); LLVMValueRef zerovec = vec4f_from_scalar(gallivm, zero, "zero"); store_coef(gallivm, args, slot, vert, zerovec, zerovec); } /** * Setup the fragment input attribute with the front-facing value. * \param frontface is the triangle front facing? */ static void emit_facing_coef(struct gallivm_state *gallivm, struct lp_setup_args *args, unsigned slot ) { LLVMBuilderRef builder = gallivm->builder; LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context); LLVMValueRef a0_0 = args->facing; LLVMValueRef a0_0f = LLVMBuildSIToFP(builder, a0_0, float_type, ""); LLVMValueRef zero = lp_build_const_float(gallivm, 0.0); LLVMValueRef a0 = vec4f(gallivm, a0_0f, zero, zero, zero, "facing"); LLVMValueRef zerovec = vec4f_from_scalar(gallivm, zero, "zero"); store_coef(gallivm, args, slot, a0, zerovec, zerovec); } static LLVMValueRef vert_attrib(struct gallivm_state *gallivm, LLVMValueRef vert, int attr, int elem, const char *name) { LLVMBuilderRef b = gallivm->builder; LLVMValueRef idx[2]; idx[0] = lp_build_const_int32(gallivm, attr); idx[1] = lp_build_const_int32(gallivm, elem); return LLVMBuildLoad(b, LLVMBuildGEP(b, vert, idx, 2, ""), name); } static LLVMValueRef vert_clamp(LLVMBuilderRef b, LLVMValueRef x, LLVMValueRef min, LLVMValueRef max) { LLVMValueRef min_result = LLVMBuildFCmp(b, LLVMRealUGT, min, x, ""); LLVMValueRef max_result = LLVMBuildFCmp(b, LLVMRealUGT, x, max, ""); LLVMValueRef clamp_value; clamp_value = LLVMBuildSelect(b, min_result, min, x, ""); clamp_value = LLVMBuildSelect(b, max_result, max, x, ""); return clamp_value; } static void lp_twoside(struct gallivm_state *gallivm, struct lp_setup_args *args, const struct lp_setup_variant_key *key, int bcolor_slot) { LLVMBuilderRef b = gallivm->builder; LLVMValueRef a0_back, a1_back, a2_back; LLVMValueRef idx2 = lp_build_const_int32(gallivm, bcolor_slot); LLVMValueRef facing = args->facing; LLVMValueRef front_facing = LLVMBuildICmp(b, LLVMIntEQ, facing, lp_build_const_int32(gallivm, 0), ""); /** need i1 for if condition */ a0_back = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx2, 1, ""), "v0a_back"); a1_back = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx2, 1, ""), "v1a_back"); a2_back = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx2, 1, ""), "v2a_back"); /* Possibly swap the front and back attrib values, * * Prefer select to if so we don't have to worry about phis or * allocas. */ args->v0a = LLVMBuildSelect(b, front_facing, a0_back, args->v0a, ""); args->v1a = LLVMBuildSelect(b, front_facing, a1_back, args->v1a, ""); args->v2a = LLVMBuildSelect(b, front_facing, a2_back, args->v2a, ""); } static void lp_do_offset_tri(struct gallivm_state *gallivm, struct lp_setup_args *args, const struct lp_setup_variant_key *key) { LLVMBuilderRef b = gallivm->builder; struct lp_build_context bld; LLVMValueRef zoffset, mult; LLVMValueRef z0_new, z1_new, z2_new; LLVMValueRef dzdx0, dzdx, dzdy0, dzdy; LLVMValueRef max, max_value; LLVMValueRef one = lp_build_const_float(gallivm, 1.0); LLVMValueRef zero = lp_build_const_float(gallivm, 0.0); LLVMValueRef two = lp_build_const_int32(gallivm, 2); /* edge vectors: e = v0 - v2, f = v1 - v2 */ LLVMValueRef v0_x = vert_attrib(gallivm, args->v0, 0, 0, "v0_x"); LLVMValueRef v1_x = vert_attrib(gallivm, args->v1, 0, 0, "v1_x"); LLVMValueRef v2_x = vert_attrib(gallivm, args->v2, 0, 0, "v2_x"); LLVMValueRef v0_y = vert_attrib(gallivm, args->v0, 0, 1, "v0_y"); LLVMValueRef v1_y = vert_attrib(gallivm, args->v1, 0, 1, "v1_y"); LLVMValueRef v2_y = vert_attrib(gallivm, args->v2, 0, 1, "v2_y"); LLVMValueRef v0_z = vert_attrib(gallivm, args->v0, 0, 2, "v0_z"); LLVMValueRef v1_z = vert_attrib(gallivm, args->v1, 0, 2, "v1_z"); LLVMValueRef v2_z = vert_attrib(gallivm, args->v2, 0, 2, "v2_z"); /* edge vectors: e = v0 - v2, f = v1 - v2 */ LLVMValueRef dx02 = LLVMBuildFSub(b, v0_x, v2_x, "dx02"); LLVMValueRef dy02 = LLVMBuildFSub(b, v0_y, v2_y, "dy02"); LLVMValueRef dz02 = LLVMBuildFSub(b, v0_z, v2_z, "dz02"); LLVMValueRef dx12 = LLVMBuildFSub(b, v1_x, v2_x, "dx12"); LLVMValueRef dy12 = LLVMBuildFSub(b, v1_y, v2_y, "dy12"); LLVMValueRef dz12 = LLVMBuildFSub(b, v1_z, v2_z, "dz12"); /* det = cross(e,f).z */ LLVMValueRef dx02_dy12 = LLVMBuildFMul(b, dx02, dy12, "dx02_dy12"); LLVMValueRef dy02_dx12 = LLVMBuildFMul(b, dy02, dx12, "dy02_dx12"); LLVMValueRef det = LLVMBuildFSub(b, dx02_dy12, dy02_dx12, "det"); LLVMValueRef inv_det = LLVMBuildFDiv(b, one, det, "inv_det"); /* (res1,res2) = cross(e,f).xy */ LLVMValueRef dy02_dz12 = LLVMBuildFMul(b, dy02, dz12, "dy02_dz12"); LLVMValueRef dz02_dy12 = LLVMBuildFMul(b, dz02, dy12, "dz02_dy12"); LLVMValueRef dz02_dx12 = LLVMBuildFMul(b, dz02, dx12, "dz02_dx12"); LLVMValueRef dx02_dz12 = LLVMBuildFMul(b, dx02, dz12, "dx02_dz12"); LLVMValueRef res1 = LLVMBuildFSub(b, dy02_dz12, dz02_dy12, "res1"); LLVMValueRef res2 = LLVMBuildFSub(b, dz02_dx12, dx02_dz12, "res2"); /* dzdx = fabsf(res1 * inv_det), dydx = fabsf(res2 * inv_det)*/ lp_build_context_init(&bld, gallivm, lp_type_float(32)); dzdx0 = LLVMBuildFMul(b, res1, inv_det, "dzdx"); dzdx = lp_build_abs(&bld, dzdx0); dzdy0 = LLVMBuildFMul(b, res2, inv_det, "dzdy"); dzdy = lp_build_abs(&bld, dzdy0); /* zoffset = offset->units + MAX2(dzdx, dzdy) * offset->scale */ max = LLVMBuildFCmp(b, LLVMRealUGT, dzdx, dzdy, ""); max_value = LLVMBuildSelect(b, max, dzdx, dzdy, "max"); mult = LLVMBuildFMul(b, max_value, lp_build_const_float(gallivm, key->scale), ""); zoffset = LLVMBuildFAdd(b, lp_build_const_float(gallivm, key->units), mult, "zoffset"); /* clamp and do offset */ z0_new = vert_clamp(b, LLVMBuildFAdd(b, v0_z, zoffset, ""), zero, one); z1_new = vert_clamp(b, LLVMBuildFAdd(b, v1_z, zoffset, ""), zero, one); z2_new = vert_clamp(b, LLVMBuildFAdd(b, v2_z, zoffset, ""), zero, one); /* insert into args->a0.z, a1.z, a2.z: */ args->v0a = LLVMBuildInsertElement(b, args->v0a, z0_new, two, ""); args->v1a = LLVMBuildInsertElement(b, args->v1a, z1_new, two, ""); args->v2a = LLVMBuildInsertElement(b, args->v2a, z2_new, two, ""); } static void load_attribute(struct gallivm_state *gallivm, struct lp_setup_args *args, const struct lp_setup_variant_key *key, unsigned vert_attr) { LLVMBuilderRef b = gallivm->builder; LLVMValueRef idx = lp_build_const_int32(gallivm, vert_attr); /* Load the vertex data */ args->v0a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx, 1, ""), "v0a"); args->v1a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx, 1, ""), "v1a"); args->v2a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx, 1, ""), "v2a"); /* Potentially modify it according to twoside, offset, etc: */ if (vert_attr == 0 && (key->scale != 0.0f || key->units != 0.0f)) { lp_do_offset_tri(gallivm, args, key); } if (key->twoside) { if (vert_attr == key->color_slot && key->bcolor_slot >= 0) lp_twoside(gallivm, args, key, key->bcolor_slot); else if (vert_attr == key->spec_slot && key->bspec_slot >= 0) lp_twoside(gallivm, args, key, key->bspec_slot); } } static void emit_coef4( struct gallivm_state *gallivm, struct lp_setup_args *args, unsigned slot, LLVMValueRef a0, LLVMValueRef a1, LLVMValueRef a2) { LLVMBuilderRef b = gallivm->builder; LLVMValueRef dy20_ooa = args->dy20_ooa; LLVMValueRef dy01_ooa = args->dy01_ooa; LLVMValueRef dx20_ooa = args->dx20_ooa; LLVMValueRef dx01_ooa = args->dx01_ooa; LLVMValueRef x0_center = args->x0_center; LLVMValueRef y0_center = args->y0_center; /* XXX: using fsub, fmul on vector types -- does this work?? */ LLVMValueRef da01 = LLVMBuildFSub(b, a0, a1, "da01"); LLVMValueRef da20 = LLVMBuildFSub(b, a2, a0, "da20"); /* Calculate dadx (vec4f) */ LLVMValueRef da01_dy20_ooa = LLVMBuildFMul(b, da01, dy20_ooa, "da01_dy20_ooa"); LLVMValueRef da20_dy01_ooa = LLVMBuildFMul(b, da20, dy01_ooa, "da20_dy01_ooa"); LLVMValueRef dadx = LLVMBuildFSub(b, da01_dy20_ooa, da20_dy01_ooa, "dadx"); /* Calculate dady (vec4f) */ LLVMValueRef da01_dx20_ooa = LLVMBuildFMul(b, da01, dx20_ooa, "da01_dx20_ooa"); LLVMValueRef da20_dx01_ooa = LLVMBuildFMul(b, da20, dx01_ooa, "da20_dx01_ooa"); LLVMValueRef dady = LLVMBuildFSub(b, da20_dx01_ooa, da01_dx20_ooa, "dady"); /* Calculate a0 - the attribute value at the origin */ LLVMValueRef dadx_x0 = LLVMBuildFMul(b, dadx, x0_center, "dadx_x0"); LLVMValueRef dady_y0 = LLVMBuildFMul(b, dady, y0_center, "dady_y0"); LLVMValueRef attr_v0 = LLVMBuildFAdd(b, dadx_x0, dady_y0, "attr_v0"); LLVMValueRef attr_0 = LLVMBuildFSub(b, a0, attr_v0, "attr_0"); store_coef(gallivm, args, slot, attr_0, dadx, dady); } static void emit_linear_coef( struct gallivm_state *gallivm, struct lp_setup_args *args, unsigned slot) { /* nothing to do anymore */ emit_coef4(gallivm, args, slot, args->v0a, args->v1a, args->v2a); } /** * Compute a0, dadx and dady for a perspective-corrected interpolant, * for a triangle. * We basically multiply the vertex value by 1/w before computing * the plane coefficients (a0, dadx, dady). * Later, when we compute the value at a particular fragment position we'll * divide the interpolated value by the interpolated W at that fragment. */ static void emit_perspective_coef( struct gallivm_state *gallivm, struct lp_setup_args *args, unsigned slot) { LLVMBuilderRef b = gallivm->builder; /* premultiply by 1/w (v[0][3] is always 1/w): */ LLVMValueRef v0_oow = vec4f_from_scalar(gallivm, vert_attrib(gallivm, args->v0, 0, 3, ""), "v0_oow"); LLVMValueRef v1_oow = vec4f_from_scalar(gallivm, vert_attrib(gallivm, args->v1, 0, 3, ""), "v1_oow"); LLVMValueRef v2_oow = vec4f_from_scalar(gallivm, vert_attrib(gallivm, args->v2, 0, 3, ""), "v2_oow"); LLVMValueRef v0_oow_v0a = LLVMBuildFMul(b, args->v0a, v0_oow, "v0_oow_v0a"); LLVMValueRef v1_oow_v1a = LLVMBuildFMul(b, args->v1a, v1_oow, "v1_oow_v1a"); LLVMValueRef v2_oow_v2a = LLVMBuildFMul(b, args->v2a, v2_oow, "v2_oow_v2a"); emit_coef4(gallivm, args, slot, v0_oow_v0a, v1_oow_v1a, v2_oow_v2a); } static void emit_position_coef( struct gallivm_state *gallivm, struct lp_setup_args *args, int slot ) { emit_linear_coef(gallivm, args, slot); } /** * Compute the inputs-> dadx, dady, a0 values. */ static void emit_tri_coef( struct gallivm_state *gallivm, const struct lp_setup_variant_key *key, struct lp_setup_args *args ) { unsigned slot; /* The internal position input is in slot zero: */ load_attribute(gallivm, args, key, 0); emit_position_coef(gallivm, args, 0); /* setup interpolation for all the remaining attributes: */ for (slot = 0; slot < key->num_inputs; slot++) { if (key->inputs[slot].interp == LP_INTERP_CONSTANT || key->inputs[slot].interp == LP_INTERP_LINEAR || key->inputs[slot].interp == LP_INTERP_PERSPECTIVE) load_attribute(gallivm, args, key, key->inputs[slot].src_index); switch (key->inputs[slot].interp) { case LP_INTERP_CONSTANT: if (key->flatshade_first) { emit_constant_coef4(gallivm, args, slot+1, args->v0a); } else { emit_constant_coef4(gallivm, args, slot+1, args->v2a); } break; case LP_INTERP_LINEAR: emit_linear_coef(gallivm, args, slot+1); break; case LP_INTERP_PERSPECTIVE: emit_perspective_coef(gallivm, args, slot+1); break; case LP_INTERP_POSITION: /* * The generated pixel interpolators will pick up the coeffs from * slot 0. */ break; case LP_INTERP_FACING: emit_facing_coef(gallivm, args, slot+1); break; default: assert(0); } } } /* XXX: This is generic code, share with fs/vs codegen: */ static lp_jit_setup_triangle finalize_function(struct gallivm_state *gallivm, LLVMBuilderRef builder, LLVMValueRef function) { void *f; /* Verify the LLVM IR. If invalid, dump and abort */ #ifdef DEBUG if (LLVMVerifyFunction(function, LLVMPrintMessageAction)) { if (1) lp_debug_dump_value(function); abort(); } #endif /* Apply optimizations to LLVM IR */ LLVMRunFunctionPassManager(gallivm->passmgr, function); if (gallivm_debug & GALLIVM_DEBUG_IR) { /* Print the LLVM IR to stderr */ lp_debug_dump_value(function); debug_printf("\n"); } /* * Translate the LLVM IR into machine code. */ f = LLVMGetPointerToGlobal(gallivm->engine, function); if (gallivm_debug & GALLIVM_DEBUG_ASM) { lp_disassemble(f); } lp_func_delete_body(function); return (lp_jit_setup_triangle) pointer_to_func(f); } /* XXX: Generic code: */ static void lp_emit_emms(struct gallivm_state *gallivm) { #ifdef PIPE_ARCH_X86 /* Avoid corrupting the FPU stack on 32bit OSes. */ lp_build_intrinsic(gallivm->builder, "llvm.x86.mmx.emms", LLVMVoidTypeInContext(gallivm->context), NULL, 0); #endif } /* XXX: generic code: */ static void set_noalias(LLVMBuilderRef builder, LLVMValueRef function, const LLVMTypeRef *arg_types, int nr_args) { int i; for(i = 0; i < Elements(arg_types); ++i) if(LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind) LLVMAddAttribute(LLVMGetParam(function, i), LLVMNoAliasAttribute); } static void init_args(struct gallivm_state *gallivm, struct lp_setup_args *args, const struct lp_setup_variant *variant) { LLVMBuilderRef b = gallivm->builder; LLVMValueRef v0_x = vert_attrib(gallivm, args->v0, 0, 0, "v0_x"); LLVMValueRef v0_y = vert_attrib(gallivm, args->v0, 0, 1, "v0_y"); LLVMValueRef v1_x = vert_attrib(gallivm, args->v1, 0, 0, "v1_x"); LLVMValueRef v1_y = vert_attrib(gallivm, args->v1, 0, 1, "v1_y"); LLVMValueRef v2_x = vert_attrib(gallivm, args->v2, 0, 0, "v2_x"); LLVMValueRef v2_y = vert_attrib(gallivm, args->v2, 0, 1, "v2_y"); LLVMValueRef pixel_center = lp_build_const_float(gallivm, variant->key.pixel_center_half ? 0.5 : 0); LLVMValueRef x0_center = LLVMBuildFSub(b, v0_x, pixel_center, "x0_center" ); LLVMValueRef y0_center = LLVMBuildFSub(b, v0_y, pixel_center, "y0_center" ); LLVMValueRef dx01 = LLVMBuildFSub(b, v0_x, v1_x, "dx01"); LLVMValueRef dy01 = LLVMBuildFSub(b, v0_y, v1_y, "dy01"); LLVMValueRef dx20 = LLVMBuildFSub(b, v2_x, v0_x, "dx20"); LLVMValueRef dy20 = LLVMBuildFSub(b, v2_y, v0_y, "dy20"); LLVMValueRef one = lp_build_const_float(gallivm, 1.0); LLVMValueRef e = LLVMBuildFMul(b, dx01, dy20, "e"); LLVMValueRef f = LLVMBuildFMul(b, dx20, dy01, "f"); LLVMValueRef ooa = LLVMBuildFDiv(b, one, LLVMBuildFSub(b, e, f, ""), "ooa"); LLVMValueRef dy20_ooa = LLVMBuildFMul(b, dy20, ooa, "dy20_ooa"); LLVMValueRef dy01_ooa = LLVMBuildFMul(b, dy01, ooa, "dy01_ooa"); LLVMValueRef dx20_ooa = LLVMBuildFMul(b, dx20, ooa, "dx20_ooa"); LLVMValueRef dx01_ooa = LLVMBuildFMul(b, dx01, ooa, "dx01_ooa"); args->dy20_ooa = vec4f_from_scalar(gallivm, dy20_ooa, "dy20_ooa_4f"); args->dy01_ooa = vec4f_from_scalar(gallivm, dy01_ooa, "dy01_ooa_4f"); args->dx20_ooa = vec4f_from_scalar(gallivm, dx20_ooa, "dx20_ooa_4f"); args->dx01_ooa = vec4f_from_scalar(gallivm, dx01_ooa, "dx01_ooa_4f"); args->x0_center = vec4f_from_scalar(gallivm, x0_center, "x0_center_4f"); args->y0_center = vec4f_from_scalar(gallivm, y0_center, "y0_center_4f"); } /** * Generate the runtime callable function for the coefficient calculation. * */ static struct lp_setup_variant * generate_setup_variant(struct gallivm_state *gallivm, struct lp_setup_variant_key *key, struct llvmpipe_context *lp) { struct lp_setup_variant *variant = NULL; struct lp_setup_args args; char func_name[256]; LLVMTypeRef vec4f_type; LLVMTypeRef func_type; LLVMTypeRef arg_types[7]; LLVMBasicBlockRef block; LLVMBuilderRef builder = gallivm->builder; int64_t t0 = 0, t1; if (0) goto fail; variant = CALLOC_STRUCT(lp_setup_variant); if (variant == NULL) goto fail; if (LP_DEBUG & DEBUG_COUNTERS) { t0 = os_time_get(); } memcpy(&variant->key, key, key->size); variant->list_item_global.base = variant; util_snprintf(func_name, sizeof(func_name), "fs%u_setup%u", 0, variant->no); /* Currently always deal with full 4-wide vertex attributes from * the vertices. */ vec4f_type = LLVMVectorType(LLVMFloatTypeInContext(gallivm->context), 4); arg_types[0] = LLVMPointerType(vec4f_type, 0); /* v0 */ arg_types[1] = LLVMPointerType(vec4f_type, 0); /* v1 */ arg_types[2] = LLVMPointerType(vec4f_type, 0); /* v2 */ arg_types[3] = LLVMInt32TypeInContext(gallivm->context); /* facing */ arg_types[4] = LLVMPointerType(vec4f_type, 0); /* a0, aligned */ arg_types[5] = LLVMPointerType(vec4f_type, 0); /* dadx, aligned */ arg_types[6] = LLVMPointerType(vec4f_type, 0); /* dady, aligned */ func_type = LLVMFunctionType(LLVMVoidTypeInContext(gallivm->context), arg_types, Elements(arg_types), 0); variant->function = LLVMAddFunction(gallivm->module, func_name, func_type); if (!variant->function) goto fail; LLVMSetFunctionCallConv(variant->function, LLVMCCallConv); args.v0 = LLVMGetParam(variant->function, 0); args.v1 = LLVMGetParam(variant->function, 1); args.v2 = LLVMGetParam(variant->function, 2); args.facing = LLVMGetParam(variant->function, 3); args.a0 = LLVMGetParam(variant->function, 4); args.dadx = LLVMGetParam(variant->function, 5); args.dady = LLVMGetParam(variant->function, 6); lp_build_name(args.v0, "in_v0"); lp_build_name(args.v1, "in_v1"); lp_build_name(args.v2, "in_v2"); lp_build_name(args.facing, "in_facing"); lp_build_name(args.a0, "out_a0"); lp_build_name(args.dadx, "out_dadx"); lp_build_name(args.dady, "out_dady"); /* * Function body */ block = LLVMAppendBasicBlockInContext(gallivm->context, variant->function, "entry"); LLVMPositionBuilderAtEnd(builder, block); set_noalias(builder, variant->function, arg_types, Elements(arg_types)); init_args(gallivm, &args, variant); emit_tri_coef(gallivm, &variant->key, &args); lp_emit_emms(gallivm); LLVMBuildRetVoid(builder); variant->jit_function = finalize_function(gallivm, builder, variant->function); if (!variant->jit_function) goto fail; /* * Update timing information: */ if (LP_DEBUG & DEBUG_COUNTERS) { t1 = os_time_get(); LP_COUNT_ADD(llvm_compile_time, t1 - t0); LP_COUNT_ADD(nr_llvm_compiles, 1); } return variant; fail: if (variant) { if (variant->function) { if (variant->jit_function) LLVMFreeMachineCodeForFunction(gallivm->engine, variant->function); LLVMDeleteFunction(variant->function); } FREE(variant); } return NULL; } static void lp_make_setup_variant_key(struct llvmpipe_context *lp, struct lp_setup_variant_key *key) { struct lp_fragment_shader *fs = lp->fs; unsigned i; assert(sizeof key->inputs[0] == sizeof(ushort)); key->num_inputs = fs->info.base.num_inputs; key->flatshade_first = lp->rasterizer->flatshade_first; key->pixel_center_half = lp->rasterizer->gl_rasterization_rules; key->twoside = lp->rasterizer->light_twoside; key->size = Offset(struct lp_setup_variant_key, inputs[key->num_inputs]); key->color_slot = lp->color_slot [0]; key->bcolor_slot = lp->bcolor_slot[0]; key->spec_slot = lp->color_slot [1]; key->bspec_slot = lp->bcolor_slot[1]; assert(key->color_slot == lp->color_slot [0]); assert(key->bcolor_slot == lp->bcolor_slot[0]); assert(key->spec_slot == lp->color_slot [1]); assert(key->bspec_slot == lp->bcolor_slot[1]); key->units = (float) (lp->rasterizer->offset_units * lp->mrd); key->scale = lp->rasterizer->offset_scale; key->pad = 0; memcpy(key->inputs, fs->inputs, key->num_inputs * sizeof key->inputs[0]); for (i = 0; i < key->num_inputs; i++) { if (key->inputs[i].interp == LP_INTERP_COLOR) { if (lp->rasterizer->flatshade) key->inputs[i].interp = LP_INTERP_CONSTANT; else key->inputs[i].interp = LP_INTERP_LINEAR; } } } static void remove_setup_variant(struct llvmpipe_context *lp, struct lp_setup_variant *variant) { if (gallivm_debug & GALLIVM_DEBUG_IR) { debug_printf("llvmpipe: del setup_variant #%u total %u\n", variant->no, lp->nr_setup_variants); } if (variant->function) { if (variant->jit_function) LLVMFreeMachineCodeForFunction(lp->gallivm->engine, variant->function); LLVMDeleteFunction(variant->function); } remove_from_list(&variant->list_item_global); lp->nr_setup_variants--; FREE(variant); } /* When the number of setup variants exceeds a threshold, cull a * fraction (currently a quarter) of them. */ static void cull_setup_variants(struct llvmpipe_context *lp) { struct pipe_context *pipe = &lp->pipe; int i; /* * XXX: we need to flush the context until we have some sort of reference * counting in fragment shaders as they may still be binned * Flushing alone might not be sufficient we need to wait on it too. */ llvmpipe_finish(pipe, __FUNCTION__); for (i = 0; i < LP_MAX_SETUP_VARIANTS / 4; i++) { struct lp_setup_variant_list_item *item; if (is_empty_list(&lp->setup_variants_list)) { break; } item = last_elem(&lp->setup_variants_list); assert(item); assert(item->base); remove_setup_variant(lp, item->base); } } /** * Update fragment/vertex shader linkage state. This is called just * prior to drawing something when some fragment-related state has * changed. */ void llvmpipe_update_setup(struct llvmpipe_context *lp) { struct lp_setup_variant_key *key = &lp->setup_variant.key; struct lp_setup_variant *variant = NULL; struct lp_setup_variant_list_item *li; lp_make_setup_variant_key(lp, key); foreach(li, &lp->setup_variants_list) { if(li->base->key.size == key->size && memcmp(&li->base->key, key, key->size) == 0) { variant = li->base; break; } } if (variant) { move_to_head(&lp->setup_variants_list, &variant->list_item_global); } else { if (lp->nr_setup_variants >= LP_MAX_SETUP_VARIANTS) { cull_setup_variants(lp); } variant = generate_setup_variant(lp->gallivm, key, lp); if (variant) { insert_at_head(&lp->setup_variants_list, &variant->list_item_global); lp->nr_setup_variants++; llvmpipe_variant_count++; } } lp_setup_set_setup_variant(lp->setup, variant); } void lp_delete_setup_variants(struct llvmpipe_context *lp) { struct lp_setup_variant_list_item *li; li = first_elem(&lp->setup_variants_list); while(!at_end(&lp->setup_variants_list, li)) { struct lp_setup_variant_list_item *next = next_elem(li); remove_setup_variant(lp, li->base); li = next; } } void lp_dump_setup_coef( const struct lp_setup_variant_key *key, const float (*sa0)[4], const float (*sdadx)[4], const float (*sdady)[4]) { int i, slot; for (i = 0; i < TGSI_NUM_CHANNELS; i++) { float a0 = sa0 [0][i]; float dadx = sdadx[0][i]; float dady = sdady[0][i]; debug_printf("POS.%c: a0 = %f, dadx = %f, dady = %f\n", "xyzw"[i], a0, dadx, dady); } for (slot = 0; slot < key->num_inputs; slot++) { unsigned usage_mask = key->inputs[slot].usage_mask; for (i = 0; i < TGSI_NUM_CHANNELS; i++) { if (usage_mask & (1 << i)) { float a0 = sa0 [1 + slot][i]; float dadx = sdadx[1 + slot][i]; float dady = sdady[1 + slot][i]; debug_printf("IN[%u].%c: a0 = %f, dadx = %f, dady = %f\n", slot, "xyzw"[i], a0, dadx, dady); } } } }