| /* |
| * Copyright © 2016-2018 Broadcom |
| * |
| * 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 "v3d_compiler.h" |
| |
| /* We don't do any address packing. */ |
| #define __gen_user_data void |
| #define __gen_address_type uint32_t |
| #define __gen_address_offset(reloc) (*reloc) |
| #define __gen_emit_reloc(cl, reloc) |
| #include "cle/v3d_packet_v33_pack.h" |
| |
| void |
| v3d33_vir_emit_tex(struct v3d_compile *c, nir_tex_instr *instr) |
| { |
| /* FIXME: We don't bother implementing pipelining for texture reads |
| * for any pre 4.x hardware. It should be straight forward to do but |
| * we are not really testing or even targetting this hardware at |
| * present. |
| */ |
| ntq_flush_tmu(c); |
| |
| unsigned unit = instr->texture_index; |
| |
| struct V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1 p0_unpacked = { |
| V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1_header, |
| |
| .fetch_sample_mode = instr->op == nir_texop_txf, |
| }; |
| |
| struct V3D33_TEXTURE_UNIFORM_PARAMETER_1_CFG_MODE1 p1_unpacked = { |
| }; |
| |
| switch (instr->sampler_dim) { |
| case GLSL_SAMPLER_DIM_1D: |
| if (instr->is_array) |
| p0_unpacked.lookup_type = TEXTURE_1D_ARRAY; |
| else |
| p0_unpacked.lookup_type = TEXTURE_1D; |
| break; |
| case GLSL_SAMPLER_DIM_2D: |
| case GLSL_SAMPLER_DIM_RECT: |
| if (instr->is_array) |
| p0_unpacked.lookup_type = TEXTURE_2D_ARRAY; |
| else |
| p0_unpacked.lookup_type = TEXTURE_2D; |
| break; |
| case GLSL_SAMPLER_DIM_3D: |
| p0_unpacked.lookup_type = TEXTURE_3D; |
| break; |
| case GLSL_SAMPLER_DIM_CUBE: |
| p0_unpacked.lookup_type = TEXTURE_CUBE_MAP; |
| break; |
| default: |
| unreachable("Bad sampler type"); |
| } |
| |
| struct qreg coords[5]; |
| int next_coord = 0; |
| for (unsigned i = 0; i < instr->num_srcs; i++) { |
| switch (instr->src[i].src_type) { |
| case nir_tex_src_coord: |
| for (int j = 0; j < instr->coord_components; j++) { |
| coords[next_coord++] = |
| ntq_get_src(c, instr->src[i].src, j); |
| } |
| if (instr->coord_components < 2) |
| coords[next_coord++] = vir_uniform_f(c, 0.5); |
| break; |
| case nir_tex_src_bias: |
| coords[next_coord++] = |
| ntq_get_src(c, instr->src[i].src, 0); |
| |
| p0_unpacked.bias_supplied = true; |
| break; |
| case nir_tex_src_lod: |
| coords[next_coord++] = |
| vir_FADD(c, |
| ntq_get_src(c, instr->src[i].src, 0), |
| vir_uniform(c, QUNIFORM_TEXTURE_FIRST_LEVEL, |
| unit)); |
| |
| if (instr->op != nir_texop_txf && |
| instr->op != nir_texop_tg4) { |
| p0_unpacked.disable_autolod_use_bias_only = true; |
| } |
| break; |
| case nir_tex_src_comparator: |
| coords[next_coord++] = |
| ntq_get_src(c, instr->src[i].src, 0); |
| |
| p0_unpacked.shadow = true; |
| break; |
| |
| case nir_tex_src_offset: { |
| p0_unpacked.texel_offset_for_s_coordinate = |
| nir_src_comp_as_int(instr->src[i].src, 0); |
| |
| if (instr->coord_components >= 2) |
| p0_unpacked.texel_offset_for_t_coordinate = |
| nir_src_comp_as_int(instr->src[i].src, 1); |
| |
| if (instr->coord_components >= 3) |
| p0_unpacked.texel_offset_for_r_coordinate = |
| nir_src_comp_as_int(instr->src[i].src, 2); |
| break; |
| } |
| |
| default: |
| unreachable("unknown texture source"); |
| } |
| } |
| |
| /* Limit the number of channels returned to both how many the NIR |
| * instruction writes and how many the instruction could produce. |
| */ |
| p1_unpacked.return_words_of_texture_data = |
| instr->dest.is_ssa ? |
| nir_ssa_def_components_read(&instr->dest.ssa) : |
| (1 << instr->dest.reg.reg->num_components) - 1; |
| |
| uint32_t p0_packed; |
| V3D33_TEXTURE_UNIFORM_PARAMETER_0_CFG_MODE1_pack(NULL, |
| (uint8_t *)&p0_packed, |
| &p0_unpacked); |
| |
| uint32_t p1_packed; |
| V3D33_TEXTURE_UNIFORM_PARAMETER_1_CFG_MODE1_pack(NULL, |
| (uint8_t *)&p1_packed, |
| &p1_unpacked); |
| /* Load unit number into the address field, which will be be used by |
| * the driver to decide which texture to put in the actual address |
| * field. |
| */ |
| p1_packed |= unit << 5; |
| |
| /* There is no native support for GL texture rectangle coordinates, so |
| * we have to rescale from ([0, width], [0, height]) to ([0, 1], [0, |
| * 1]). |
| */ |
| if (instr->sampler_dim == GLSL_SAMPLER_DIM_RECT) { |
| coords[0] = vir_FMUL(c, coords[0], |
| vir_uniform(c, QUNIFORM_TEXRECT_SCALE_X, |
| unit)); |
| coords[1] = vir_FMUL(c, coords[1], |
| vir_uniform(c, QUNIFORM_TEXRECT_SCALE_Y, |
| unit)); |
| } |
| |
| int texture_u[] = { |
| vir_get_uniform_index(c, QUNIFORM_TEXTURE_CONFIG_P0_0 + unit, p0_packed), |
| vir_get_uniform_index(c, QUNIFORM_TEXTURE_CONFIG_P1, p1_packed), |
| }; |
| |
| for (int i = 0; i < next_coord; i++) { |
| struct qreg dst; |
| |
| if (i == next_coord - 1) |
| dst = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMUL); |
| else |
| dst = vir_reg(QFILE_MAGIC, V3D_QPU_WADDR_TMU); |
| |
| struct qinst *tmu = vir_MOV_dest(c, dst, coords[i]); |
| |
| if (i < 2) |
| tmu->uniform = texture_u[i]; |
| } |
| |
| vir_emit_thrsw(c); |
| |
| for (int i = 0; i < 4; i++) { |
| if (p1_unpacked.return_words_of_texture_data & (1 << i)) |
| ntq_store_dest(c, &instr->dest, i, vir_LDTMU(c)); |
| } |
| } |
