v3d33_tex.c revision b8e80941
1/* 2 * Copyright © 2016-2018 Broadcom 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24#include "v3d_compiler.h" 25 26/* We don't do any address packing. */ 27#define __gen_user_data void 28#define __gen_address_type uint32_t 29#define __gen_address_offset(reloc) (*reloc) 30#define __gen_emit_reloc(cl, reloc) 31#include "cle/v3d_packet_v33_pack.h" 32 33void 34v3d33_vir_emit_tex(struct v3d_compile *c, nir_tex_instr *instr) 35{ 36 unsigned unit = instr->texture_index; 37 38 struct V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1 p0_unpacked = { 39 V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1_header, 40 41 .fetch_sample_mode = instr->op == nir_texop_txf, 42 }; 43 44 struct V3D33_TEXTURE_UNIFORM_PARAMETER_1_CFG_MODE1 p1_unpacked = { 45 }; 46 47 switch (instr->sampler_dim) { 48 case GLSL_SAMPLER_DIM_1D: 49 if (instr->is_array) 50 p0_unpacked.lookup_type = TEXTURE_1D_ARRAY; 51 else 52 p0_unpacked.lookup_type = TEXTURE_1D; 53 break; 54 case GLSL_SAMPLER_DIM_2D: 55 case GLSL_SAMPLER_DIM_RECT: 56 if (instr->is_array) 57 p0_unpacked.lookup_type = TEXTURE_2D_ARRAY; 58 else 59 p0_unpacked.lookup_type = TEXTURE_2D; 60 break; 61 case GLSL_SAMPLER_DIM_3D: 62 p0_unpacked.lookup_type = TEXTURE_3D; 63 break; 64 case GLSL_SAMPLER_DIM_CUBE: 65 p0_unpacked.lookup_type = TEXTURE_CUBE_MAP; 66 break; 67 default: 68 unreachable("Bad sampler type"); 69 } 70 71 struct qreg coords[5]; 72 int next_coord = 0; 73 for (unsigned i = 0; i < instr->num_srcs; i++) { 74 switch (instr->src[i].src_type) { 75 case nir_tex_src_coord: 76 for (int j = 0; j < instr->coord_components; j++) { 77 coords[next_coord++] = 78 ntq_get_src(c, instr->src[i].src, j); 79 } 80 if (instr->coord_components < 2) 81 coords[next_coord++] = vir_uniform_f(c, 0.5); 82 break; 83 case nir_tex_src_bias: 84 coords[next_coord++] = 85 ntq_get_src(c, instr->src[i].src, 0); 86 87 p0_unpacked.bias_supplied = true; 88 break; 89 case nir_tex_src_lod: 90 coords[next_coord++] = 91 vir_FADD(c, 92 ntq_get_src(c, instr->src[i].src, 0), 93 vir_uniform(c, QUNIFORM_TEXTURE_FIRST_LEVEL, 94 unit)); 95 96 if (instr->op != nir_texop_txf && 97 instr->op != nir_texop_tg4) { 98 p0_unpacked.disable_autolod_use_bias_only = true; 99 } 100 break; 101 case nir_tex_src_comparator: 102 coords[next_coord++] = 103 ntq_get_src(c, instr->src[i].src, 0); 104 105 p0_unpacked.shadow = true; 106 break; 107 108 case nir_tex_src_offset: { 109 p0_unpacked.texel_offset_for_s_coordinate = 110 nir_src_comp_as_int(instr->src[i].src, 0); 111 112 if (instr->coord_components >= 2) 113 p0_unpacked.texel_offset_for_t_coordinate = 114 nir_src_comp_as_int(instr->src[i].src, 1); 115 116 if (instr->coord_components >= 3) 117 p0_unpacked.texel_offset_for_r_coordinate = 118 nir_src_comp_as_int(instr->src[i].src, 2); 119 break; 120 } 121 122 default: 123 unreachable("unknown texture source"); 124 } 125 } 126 127 /* Limit the number of channels returned to both how many the NIR 128 * instruction writes and how many the instruction could produce. 129 */ 130 assert(instr->dest.is_ssa); 131 p1_unpacked.return_words_of_texture_data = 132 nir_ssa_def_components_read(&instr->dest.ssa); 133 134 uint32_t p0_packed; 135 V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1_pack(NULL, 136 (uint8_t *)&p0_packed, 137 &p0_unpacked); 138 139 uint32_t p1_packed; 140 V3D33_TEXTURE_UNIFORM_PARAMETER_1_CFG_MODE1_pack(NULL, 141 (uint8_t *)&p1_packed, 142 &p1_unpacked); 143 /* Load unit number into the address field, which will be be used by 144 * the driver to decide which texture to put in the actual address 145 * field. 146 */ 147 p1_packed |= unit << 5; 148 149 /* There is no native support for GL texture rectangle coordinates, so 150 * we have to rescale from ([0, width], [0, height]) to ([0, 1], [0, 151 * 1]). 152 */ 153 if (instr->sampler_dim == GLSL_SAMPLER_DIM_RECT) { 154 coords[0] = vir_FMUL(c, coords[0], 155 vir_uniform(c, QUNIFORM_TEXRECT_SCALE_X, 156 unit)); 157 coords[1] = vir_FMUL(c, coords[1], 158 vir_uniform(c, QUNIFORM_TEXRECT_SCALE_Y, 159 unit)); 160 } 161 162 int texture_u[] = { 163 vir_get_uniform_index(c, QUNIFORM_TEXTURE_CONFIG_P0_0 + unit, p0_packed), 164 vir_get_uniform_index(c, QUNIFORM_TEXTURE_CONFIG_P1, p1_packed), 165 }; 166 167 for (int i = 0; i < next_coord; i++) { 168 struct qreg dst; 169 170 if (i == next_coord - 1) 171 dst = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUL); 172 else 173 dst = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMU); 174 175 struct qinst *tmu = vir_MOV_dest(c, dst, coords[i]); 176 177 if (i < 2) 178 tmu->uniform = texture_u[i]; 179 } 180 181 vir_emit_thrsw(c); 182 183 for (int i = 0; i < 4; i++) { 184 if (p1_unpacked.return_words_of_texture_data & (1 << i)) 185 ntq_store_dest(c, &instr->dest, i, vir_LDTMU(c)); 186 } 187} 188