/* * Copyright (c) 2014 Scott Mansell * Copyright © 2014 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 #include "pipe/p_state.h" #include "util/u_format.h" #include "util/u_hash_table.h" #include "util/u_hash.h" #include "util/u_memory.h" #include "util/ralloc.h" #include "tgsi/tgsi_dump.h" #include "tgsi/tgsi_info.h" #include "vc4_context.h" #include "vc4_qpu.h" #include "vc4_qir.h" #ifdef USE_VC4_SIMULATOR #include "simpenrose/simpenrose.h" #endif struct vc4_key { struct pipe_shader_state *shader_state; struct { enum pipe_format format; unsigned compare_mode:1; unsigned compare_func:3; uint8_t swizzle[4]; } tex[VC4_MAX_TEXTURE_SAMPLERS]; }; struct vc4_fs_key { struct vc4_key base; enum pipe_format color_format; bool depth_enabled; bool stencil_enabled; bool stencil_twoside; bool stencil_full_writemasks; bool is_points; bool is_lines; bool alpha_test; bool point_coord_upper_left; uint8_t alpha_test_func; uint32_t point_sprite_mask; struct pipe_rt_blend_state blend; }; struct vc4_vs_key { struct vc4_key base; enum pipe_format attr_formats[8]; bool per_vertex_point_size; }; static void resize_qreg_array(struct vc4_compile *c, struct qreg **regs, uint32_t *size, uint32_t decl_size) { if (*size >= decl_size) return; uint32_t old_size = *size; *size = MAX2(*size * 2, decl_size); *regs = reralloc(c, *regs, struct qreg, *size); if (!*regs) { fprintf(stderr, "Malloc failure\n"); abort(); } for (uint32_t i = old_size; i < *size; i++) (*regs)[i] = c->undef; } static struct qreg add_uniform(struct vc4_compile *c, enum quniform_contents contents, uint32_t data) { uint32_t uniform = c->num_uniforms++; struct qreg u = { QFILE_UNIF, uniform }; c->uniform_contents[uniform] = contents; c->uniform_data[uniform] = data; return u; } static struct qreg get_temp_for_uniform(struct vc4_compile *c, enum quniform_contents contents, uint32_t data) { for (int i = 0; i < c->num_uniforms; i++) { if (c->uniform_contents[i] == contents && c->uniform_data[i] == data) return c->uniforms[i]; } struct qreg u = add_uniform(c, contents, data); struct qreg t = qir_MOV(c, u); resize_qreg_array(c, &c->uniforms, &c->uniforms_array_size, u.index + 1); c->uniforms[u.index] = t; return t; } static struct qreg qir_uniform_ui(struct vc4_compile *c, uint32_t ui) { return get_temp_for_uniform(c, QUNIFORM_CONSTANT, ui); } static struct qreg qir_uniform_f(struct vc4_compile *c, float f) { return qir_uniform_ui(c, fui(f)); } static struct qreg get_src(struct vc4_compile *c, unsigned tgsi_op, struct tgsi_src_register *src, int i) { struct qreg r = c->undef; uint32_t s = i; switch (i) { case TGSI_SWIZZLE_X: s = src->SwizzleX; break; case TGSI_SWIZZLE_Y: s = src->SwizzleY; break; case TGSI_SWIZZLE_Z: s = src->SwizzleZ; break; case TGSI_SWIZZLE_W: s = src->SwizzleW; break; default: abort(); } assert(!src->Indirect); switch (src->File) { case TGSI_FILE_NULL: return r; case TGSI_FILE_TEMPORARY: r = c->temps[src->Index * 4 + s]; break; case TGSI_FILE_IMMEDIATE: r = c->consts[src->Index * 4 + s]; break; case TGSI_FILE_CONSTANT: r = get_temp_for_uniform(c, QUNIFORM_UNIFORM, src->Index * 4 + s); break; case TGSI_FILE_INPUT: r = c->inputs[src->Index * 4 + s]; break; case TGSI_FILE_SAMPLER: case TGSI_FILE_SAMPLER_VIEW: r = c->undef; break; default: fprintf(stderr, "unknown src file %d\n", src->File); abort(); } if (src->Absolute) r = qir_FMAXABS(c, r, r); if (src->Negate) { switch (tgsi_opcode_infer_src_type(tgsi_op)) { case TGSI_TYPE_SIGNED: case TGSI_TYPE_UNSIGNED: r = qir_SUB(c, qir_uniform_ui(c, 0), r); break; default: r = qir_FSUB(c, qir_uniform_f(c, 0.0), r); break; } } return r; }; static void update_dst(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, int i, struct qreg val) { struct tgsi_dst_register *tgsi_dst = &tgsi_inst->Dst[0].Register; assert(!tgsi_dst->Indirect); switch (tgsi_dst->File) { case TGSI_FILE_TEMPORARY: c->temps[tgsi_dst->Index * 4 + i] = val; break; case TGSI_FILE_OUTPUT: c->outputs[tgsi_dst->Index * 4 + i] = val; c->num_outputs = MAX2(c->num_outputs, tgsi_dst->Index * 4 + i + 1); break; default: fprintf(stderr, "unknown dst file %d\n", tgsi_dst->File); abort(); } }; static struct qreg get_swizzled_channel(struct vc4_compile *c, struct qreg *srcs, int swiz) { switch (swiz) { default: case UTIL_FORMAT_SWIZZLE_NONE: fprintf(stderr, "warning: unknown swizzle\n"); /* FALLTHROUGH */ case UTIL_FORMAT_SWIZZLE_0: return qir_uniform_f(c, 0.0); case UTIL_FORMAT_SWIZZLE_1: return qir_uniform_f(c, 1.0); case UTIL_FORMAT_SWIZZLE_X: case UTIL_FORMAT_SWIZZLE_Y: case UTIL_FORMAT_SWIZZLE_Z: case UTIL_FORMAT_SWIZZLE_W: return srcs[swiz]; } } static struct qreg tgsi_to_qir_alu(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg dst = qir_get_temp(c); qir_emit(c, qir_inst4(op, dst, src[0 * 4 + i], src[1 * 4 + i], src[2 * 4 + i], c->undef)); return dst; } static struct qreg tgsi_to_qir_umul(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg src0_hi = qir_SHR(c, src[0 * 4 + i], qir_uniform_ui(c, 16)); struct qreg src0_lo = qir_AND(c, src[0 * 4 + i], qir_uniform_ui(c, 0xffff)); struct qreg src1_hi = qir_SHR(c, src[1 * 4 + i], qir_uniform_ui(c, 16)); struct qreg src1_lo = qir_AND(c, src[1 * 4 + i], qir_uniform_ui(c, 0xffff)); struct qreg hilo = qir_MUL24(c, src0_hi, src1_lo); struct qreg lohi = qir_MUL24(c, src0_lo, src1_hi); struct qreg lolo = qir_MUL24(c, src0_lo, src1_lo); return qir_ADD(c, lolo, qir_SHL(c, qir_ADD(c, hilo, lohi), qir_uniform_ui(c, 16))); } static struct qreg tgsi_to_qir_idiv(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return qir_FTOI(c, qir_FMUL(c, qir_ITOF(c, src[0 * 4 + i]), qir_RCP(c, qir_ITOF(c, src[1 * 4 + i])))); } static struct qreg tgsi_to_qir_ineg(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return qir_SUB(c, qir_uniform_ui(c, 0), src[0 * 4 + i]); } static struct qreg tgsi_to_qir_seq(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_ZS(c, qir_uniform_f(c, 1.0)); } static struct qreg tgsi_to_qir_sne(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_ZC(c, qir_uniform_f(c, 1.0)); } static struct qreg tgsi_to_qir_slt(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_NS(c, qir_uniform_f(c, 1.0)); } static struct qreg tgsi_to_qir_sge(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_NC(c, qir_uniform_f(c, 1.0)); } static struct qreg tgsi_to_qir_fseq(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_ZS(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_fsne(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_ZC(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_fslt(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_NS(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_fsge(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_FSUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_NC(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_useq(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_ZS(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_usne(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_ZC(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_islt(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_NS(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_isge(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, qir_SUB(c, src[0 * 4 + i], src[1 * 4 + i])); return qir_SEL_X_0_NC(c, qir_uniform_ui(c, ~0)); } static struct qreg tgsi_to_qir_cmp(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { qir_SF(c, src[0 * 4 + i]); return qir_SEL_X_Y_NS(c, src[1 * 4 + i], src[2 * 4 + i]); } static struct qreg tgsi_to_qir_mad(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return qir_FADD(c, qir_FMUL(c, src[0 * 4 + i], src[1 * 4 + i]), src[2 * 4 + i]); } static struct qreg tgsi_to_qir_lit(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg x = src[0 * 4 + 0]; struct qreg y = src[0 * 4 + 1]; struct qreg w = src[0 * 4 + 3]; switch (i) { case 0: case 3: return qir_uniform_f(c, 1.0); case 1: return qir_FMAX(c, src[0 * 4 + 0], qir_uniform_f(c, 0.0)); case 2: { struct qreg zero = qir_uniform_f(c, 0.0); qir_SF(c, x); /* XXX: Clamp w to -128..128 */ return qir_SEL_X_0_NC(c, qir_EXP2(c, qir_FMUL(c, w, qir_LOG2(c, qir_FMAX(c, y, zero))))); } default: assert(!"not reached"); return c->undef; } } static struct qreg tgsi_to_qir_lrp(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg src0 = src[0 * 4 + i]; struct qreg src1 = src[1 * 4 + i]; struct qreg src2 = src[2 * 4 + i]; /* LRP is: * src0 * src1 + (1 - src0) * src2. * -> src0 * src1 + src2 - src0 * src2 * -> src2 + src0 * (src1 - src2) */ return qir_FADD(c, src2, qir_FMUL(c, src0, qir_FSUB(c, src1, src2))); } static void tgsi_to_qir_tex(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src) { assert(!tgsi_inst->Instruction.Saturate); struct qreg s = src[0 * 4 + 0]; struct qreg t = src[0 * 4 + 1]; uint32_t unit = tgsi_inst->Src[1].Register.Index; struct qreg proj = c->undef; if (tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXP) { proj = qir_RCP(c, src[0 * 4 + 3]); s = qir_FMUL(c, s, proj); t = qir_FMUL(c, t, proj); } /* 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 (tgsi_inst->Texture.Texture == TGSI_TEXTURE_RECT || tgsi_inst->Texture.Texture == TGSI_TEXTURE_SHADOWRECT) { s = qir_FMUL(c, s, get_temp_for_uniform(c, QUNIFORM_TEXRECT_SCALE_X, unit)); t = qir_FMUL(c, t, get_temp_for_uniform(c, QUNIFORM_TEXRECT_SCALE_Y, unit)); } qir_TEX_T(c, t, add_uniform(c, QUNIFORM_TEXTURE_CONFIG_P0, unit)); struct qreg sampler_p1 = add_uniform(c, QUNIFORM_TEXTURE_CONFIG_P1, unit); if (tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXB) { qir_TEX_B(c, src[0 * 4 + 3], sampler_p1); qir_TEX_S(c, s, add_uniform(c, QUNIFORM_CONSTANT, 0)); } else { qir_TEX_S(c, s, sampler_p1); } c->num_texture_samples++; struct qreg r4 = qir_TEX_RESULT(c); enum pipe_format format = c->key->tex[unit].format; struct qreg unpacked[4]; if (util_format_is_depth_or_stencil(format)) { struct qreg depthf = qir_ITOF(c, qir_SHR(c, r4, qir_uniform_ui(c, 8))); struct qreg normalized = qir_FMUL(c, depthf, qir_uniform_f(c, 1.0f/0xffffff)); struct qreg depth_output; struct qreg compare = src[0 * 4 + 2]; if (tgsi_inst->Instruction.Opcode == TGSI_OPCODE_TXP) compare = qir_FMUL(c, compare, proj); struct qreg one = qir_uniform_f(c, 1.0f); if (c->key->tex[unit].compare_mode) { switch (c->key->tex[unit].compare_func) { case PIPE_FUNC_NEVER: depth_output = qir_uniform_f(c, 0.0f); break; case PIPE_FUNC_ALWAYS: depth_output = one; break; case PIPE_FUNC_EQUAL: qir_SF(c, qir_FSUB(c, compare, normalized)); depth_output = qir_SEL_X_0_ZS(c, one); break; case PIPE_FUNC_NOTEQUAL: qir_SF(c, qir_FSUB(c, compare, normalized)); depth_output = qir_SEL_X_0_ZC(c, one); break; case PIPE_FUNC_GREATER: qir_SF(c, qir_FSUB(c, compare, normalized)); depth_output = qir_SEL_X_0_NC(c, one); break; case PIPE_FUNC_GEQUAL: qir_SF(c, qir_FSUB(c, normalized, compare)); depth_output = qir_SEL_X_0_NS(c, one); break; case PIPE_FUNC_LESS: qir_SF(c, qir_FSUB(c, compare, normalized)); depth_output = qir_SEL_X_0_NS(c, one); break; case PIPE_FUNC_LEQUAL: qir_SF(c, qir_FSUB(c, normalized, compare)); depth_output = qir_SEL_X_0_NC(c, one); break; } } else { depth_output = normalized; } for (int i = 0; i < 4; i++) unpacked[i] = depth_output; } else { for (int i = 0; i < 4; i++) unpacked[i] = qir_R4_UNPACK(c, r4, i); } const uint8_t *format_swiz = vc4_get_format_swizzle(format); uint8_t swiz[4]; util_format_compose_swizzles(format_swiz, c->key->tex[unit].swizzle, swiz); for (int i = 0; i < 4; i++) { if (!(tgsi_inst->Dst[0].Register.WriteMask & (1 << i))) continue; update_dst(c, tgsi_inst, i, get_swizzled_channel(c, unpacked, swiz[i])); } } static struct qreg tgsi_to_qir_pow(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { /* Note that this instruction replicates its result from the x channel */ return qir_EXP2(c, qir_FMUL(c, src[1 * 4 + 0], qir_LOG2(c, src[0 * 4 + 0]))); } static struct qreg tgsi_to_qir_trunc(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i])); } /** * Computes x - floor(x), which is tricky because our FTOI truncates (rounds * to zero). */ static struct qreg tgsi_to_qir_frc(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i])); struct qreg diff = qir_FSUB(c, src[0 * 4 + i], trunc); qir_SF(c, diff); return qir_SEL_X_Y_NS(c, qir_FADD(c, diff, qir_uniform_f(c, 1.0)), diff); } /** * Computes floor(x), which is tricky because our FTOI truncates (rounds to * zero). */ static struct qreg tgsi_to_qir_flr(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i])); /* This will be < 0 if we truncated and the truncation was of a value * that was < 0 in the first place. */ qir_SF(c, qir_FSUB(c, src[0 * 4 + i], trunc)); return qir_SEL_X_Y_NS(c, qir_FSUB(c, trunc, qir_uniform_f(c, 1.0)), trunc); } static struct qreg tgsi_to_qir_dp(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, int num, struct qreg *src, int i) { struct qreg sum = qir_FMUL(c, src[0 * 4 + 0], src[1 * 4 + 0]); for (int j = 1; j < num; j++) { sum = qir_FADD(c, sum, qir_FMUL(c, src[0 * 4 + j], src[1 * 4 + j])); } return sum; } static struct qreg tgsi_to_qir_dp2(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return tgsi_to_qir_dp(c, tgsi_inst, 2, src, i); } static struct qreg tgsi_to_qir_dp3(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return tgsi_to_qir_dp(c, tgsi_inst, 3, src, i); } static struct qreg tgsi_to_qir_dp4(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { return tgsi_to_qir_dp(c, tgsi_inst, 4, src, i); } static struct qreg tgsi_to_qir_abs(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { struct qreg arg = src[0 * 4 + i]; return qir_FMAXABS(c, arg, arg); } /* Note that this instruction replicates its result from the x channel */ static struct qreg tgsi_to_qir_sin(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { float coeff[] = { 2.0 * M_PI, -pow(2.0 * M_PI, 3) / (3 * 2 * 1), pow(2.0 * M_PI, 5) / (5 * 4 * 3 * 2 * 1), -pow(2.0 * M_PI, 7) / (7 * 6 * 5 * 4 * 3 * 2 * 1), }; struct qreg scaled_x = qir_FMUL(c, src[0 * 4 + 0], qir_uniform_f(c, 1.0f / (M_PI * 2.0f))); struct qreg x = tgsi_to_qir_frc(c, NULL, 0, &scaled_x, 0); struct qreg x2 = qir_FMUL(c, x, x); struct qreg sum = qir_FMUL(c, x, qir_uniform_f(c, coeff[0])); for (int i = 1; i < ARRAY_SIZE(coeff); i++) { x = qir_FMUL(c, x, x2); sum = qir_FADD(c, sum, qir_FMUL(c, x, qir_uniform_f(c, coeff[i]))); } return sum; } /* Note that this instruction replicates its result from the x channel */ static struct qreg tgsi_to_qir_cos(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i) { float coeff[] = { 1.0f, -pow(2.0 * M_PI, 2) / (2 * 1), pow(2.0 * M_PI, 4) / (4 * 3 * 2 * 1), -pow(2.0 * M_PI, 6) / (6 * 5 * 4 * 3 * 2 * 1), }; struct qreg scaled_x = qir_FMUL(c, src[0 * 4 + 0], qir_uniform_f(c, 1.0f / (M_PI * 2.0f))); struct qreg x_frac = tgsi_to_qir_frc(c, NULL, 0, &scaled_x, 0); struct qreg sum = qir_uniform_f(c, coeff[0]); struct qreg x2 = qir_FMUL(c, x_frac, x_frac); struct qreg x = x2; /* Current x^2, x^4, or x^6 */ for (int i = 1; i < ARRAY_SIZE(coeff); i++) { if (i != 1) x = qir_FMUL(c, x, x2); struct qreg mul = qir_FMUL(c, x, qir_uniform_f(c, coeff[i])); if (i == 0) sum = mul; else sum = qir_FADD(c, sum, mul); } return sum; } static void emit_vertex_input(struct vc4_compile *c, int attr) { enum pipe_format format = c->vs_key->attr_formats[attr]; struct qreg vpm_reads[4]; /* Right now, we're setting the VPM offsets to be 16 bytes wide every * time, so we always read 4 32-bit VPM entries. */ for (int i = 0; i < 4; i++) { vpm_reads[i] = qir_get_temp(c); qir_emit(c, qir_inst(QOP_VPM_READ, vpm_reads[i], c->undef, c->undef)); c->num_inputs++; } bool format_warned = false; const struct util_format_description *desc = util_format_description(format); for (int i = 0; i < 4; i++) { uint8_t swiz = desc->swizzle[i]; struct qreg result; if (swiz > UTIL_FORMAT_SWIZZLE_W) result = get_swizzled_channel(c, vpm_reads, swiz); else if (desc->channel[swiz].size == 32 && desc->channel[swiz].type == UTIL_FORMAT_TYPE_FLOAT) { result = get_swizzled_channel(c, vpm_reads, swiz); } else if (desc->channel[swiz].size == 8 && (desc->channel[swiz].type == UTIL_FORMAT_TYPE_UNSIGNED || desc->channel[swiz].type == UTIL_FORMAT_TYPE_SIGNED) && desc->channel[swiz].normalized) { struct qreg vpm = vpm_reads[0]; if (desc->channel[swiz].type == UTIL_FORMAT_TYPE_SIGNED) vpm = qir_XOR(c, vpm, qir_uniform_ui(c, 0x80808080)); result = qir_UNPACK_8(c, vpm, swiz); } else { if (!format_warned) { fprintf(stderr, "vtx element %d unsupported type: %s\n", attr, util_format_name(format)); format_warned = true; } result = qir_uniform_f(c, 0.0); } if (desc->channel[swiz].normalized && desc->channel[swiz].type == UTIL_FORMAT_TYPE_SIGNED) { result = qir_FSUB(c, qir_FMUL(c, result, qir_uniform_f(c, 2.0)), qir_uniform_f(c, 1.0)); } c->inputs[attr * 4 + i] = result; } } static void tgsi_to_qir_kill_if(struct vc4_compile *c, struct qreg *src, int i) { if (c->discard.file == QFILE_NULL) c->discard = qir_uniform_f(c, 0.0); qir_SF(c, src[0 * 4 + i]); c->discard = qir_SEL_X_Y_NS(c, qir_uniform_f(c, 1.0), c->discard); } static void emit_fragcoord_input(struct vc4_compile *c, int attr) { c->inputs[attr * 4 + 0] = qir_FRAG_X(c); c->inputs[attr * 4 + 1] = qir_FRAG_Y(c); c->inputs[attr * 4 + 2] = qir_FMUL(c, qir_ITOF(c, qir_FRAG_Z(c)), qir_uniform_f(c, 1.0 / 0xffffff)); c->inputs[attr * 4 + 3] = qir_RCP(c, qir_FRAG_W(c)); } static void emit_point_coord_input(struct vc4_compile *c, int attr) { if (c->point_x.file == QFILE_NULL) { c->point_x = qir_uniform_f(c, 0.0); c->point_y = qir_uniform_f(c, 0.0); } c->inputs[attr * 4 + 0] = c->point_x; if (c->fs_key->point_coord_upper_left) { c->inputs[attr * 4 + 1] = qir_FSUB(c, qir_uniform_f(c, 1.0), c->point_y); } else { c->inputs[attr * 4 + 1] = c->point_y; } c->inputs[attr * 4 + 2] = qir_uniform_f(c, 0.0); c->inputs[attr * 4 + 3] = qir_uniform_f(c, 1.0); } static struct qreg emit_fragment_varying(struct vc4_compile *c, int index) { struct qreg vary = { QFILE_VARY, index }; return qir_VARY_ADD_C(c, qir_FMUL(c, vary, qir_FRAG_W(c))); } static void emit_fragment_input(struct vc4_compile *c, int attr, struct tgsi_full_declaration *decl) { for (int i = 0; i < 4; i++) { c->inputs[attr * 4 + i] = emit_fragment_varying(c, attr * 4 + i); c->num_inputs++; if (decl->Semantic.Name == TGSI_SEMANTIC_COLOR || decl->Semantic.Name == TGSI_SEMANTIC_BCOLOR) c->color_inputs |= 1 << i; } } static void emit_tgsi_declaration(struct vc4_compile *c, struct tgsi_full_declaration *decl) { switch (decl->Declaration.File) { case TGSI_FILE_TEMPORARY: resize_qreg_array(c, &c->temps, &c->temps_array_size, (decl->Range.Last + 1) * 4); break; case TGSI_FILE_INPUT: resize_qreg_array(c, &c->inputs, &c->inputs_array_size, (decl->Range.Last + 1) * 4); for (int i = decl->Range.First; i <= decl->Range.Last; i++) { if (c->stage == QSTAGE_FRAG) { if (decl->Semantic.Name == TGSI_SEMANTIC_POSITION) { emit_fragcoord_input(c, i); } else if (decl->Semantic.Name == TGSI_SEMANTIC_GENERIC && (c->fs_key->point_sprite_mask & (1 << decl->Semantic.Index))) { emit_point_coord_input(c, i); } else { emit_fragment_input(c, i, decl); } } else { emit_vertex_input(c, i); } } break; case TGSI_FILE_OUTPUT: resize_qreg_array(c, &c->outputs, &c->outputs_array_size, (decl->Range.Last + 1) * 4); switch (decl->Semantic.Name) { case TGSI_SEMANTIC_POSITION: c->output_position_index = decl->Range.First * 4; break; case TGSI_SEMANTIC_COLOR: c->output_color_index = decl->Range.First * 4; break; case TGSI_SEMANTIC_PSIZE: c->output_point_size_index = decl->Range.First * 4; break; } break; } } static void emit_tgsi_instruction(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst) { struct { enum qop op; struct qreg (*func)(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, enum qop op, struct qreg *src, int i); } op_trans[] = { [TGSI_OPCODE_MOV] = { QOP_MOV, tgsi_to_qir_alu }, [TGSI_OPCODE_ABS] = { 0, tgsi_to_qir_abs }, [TGSI_OPCODE_MUL] = { QOP_FMUL, tgsi_to_qir_alu }, [TGSI_OPCODE_ADD] = { QOP_FADD, tgsi_to_qir_alu }, [TGSI_OPCODE_SUB] = { QOP_FSUB, tgsi_to_qir_alu }, [TGSI_OPCODE_MIN] = { QOP_FMIN, tgsi_to_qir_alu }, [TGSI_OPCODE_MAX] = { QOP_FMAX, tgsi_to_qir_alu }, [TGSI_OPCODE_F2I] = { QOP_FTOI, tgsi_to_qir_alu }, [TGSI_OPCODE_I2F] = { QOP_ITOF, tgsi_to_qir_alu }, [TGSI_OPCODE_UADD] = { QOP_ADD, tgsi_to_qir_alu }, [TGSI_OPCODE_USHR] = { QOP_SHR, tgsi_to_qir_alu }, [TGSI_OPCODE_ISHR] = { QOP_ASR, tgsi_to_qir_alu }, [TGSI_OPCODE_SHL] = { QOP_SHL, tgsi_to_qir_alu }, [TGSI_OPCODE_IMIN] = { QOP_MIN, tgsi_to_qir_alu }, [TGSI_OPCODE_IMAX] = { QOP_MAX, tgsi_to_qir_alu }, [TGSI_OPCODE_AND] = { QOP_AND, tgsi_to_qir_alu }, [TGSI_OPCODE_OR] = { QOP_OR, tgsi_to_qir_alu }, [TGSI_OPCODE_XOR] = { QOP_XOR, tgsi_to_qir_alu }, [TGSI_OPCODE_NOT] = { QOP_NOT, tgsi_to_qir_alu }, [TGSI_OPCODE_UMUL] = { 0, tgsi_to_qir_umul }, [TGSI_OPCODE_IDIV] = { 0, tgsi_to_qir_idiv }, [TGSI_OPCODE_INEG] = { 0, tgsi_to_qir_ineg }, [TGSI_OPCODE_RSQ] = { QOP_RSQ, tgsi_to_qir_alu }, [TGSI_OPCODE_SEQ] = { 0, tgsi_to_qir_seq }, [TGSI_OPCODE_SNE] = { 0, tgsi_to_qir_sne }, [TGSI_OPCODE_SGE] = { 0, tgsi_to_qir_sge }, [TGSI_OPCODE_SLT] = { 0, tgsi_to_qir_slt }, [TGSI_OPCODE_FSEQ] = { 0, tgsi_to_qir_fseq }, [TGSI_OPCODE_FSNE] = { 0, tgsi_to_qir_fsne }, [TGSI_OPCODE_FSGE] = { 0, tgsi_to_qir_fsge }, [TGSI_OPCODE_FSLT] = { 0, tgsi_to_qir_fslt }, [TGSI_OPCODE_USEQ] = { 0, tgsi_to_qir_useq }, [TGSI_OPCODE_USNE] = { 0, tgsi_to_qir_usne }, [TGSI_OPCODE_ISGE] = { 0, tgsi_to_qir_isge }, [TGSI_OPCODE_ISLT] = { 0, tgsi_to_qir_islt }, [TGSI_OPCODE_CMP] = { 0, tgsi_to_qir_cmp }, [TGSI_OPCODE_MAD] = { 0, tgsi_to_qir_mad }, [TGSI_OPCODE_DP2] = { 0, tgsi_to_qir_dp2 }, [TGSI_OPCODE_DP3] = { 0, tgsi_to_qir_dp3 }, [TGSI_OPCODE_DP4] = { 0, tgsi_to_qir_dp4 }, [TGSI_OPCODE_RCP] = { QOP_RCP, tgsi_to_qir_alu }, [TGSI_OPCODE_RSQ] = { QOP_RSQ, tgsi_to_qir_alu }, [TGSI_OPCODE_EX2] = { QOP_EXP2, tgsi_to_qir_alu }, [TGSI_OPCODE_LG2] = { QOP_LOG2, tgsi_to_qir_alu }, [TGSI_OPCODE_LIT] = { 0, tgsi_to_qir_lit }, [TGSI_OPCODE_LRP] = { 0, tgsi_to_qir_lrp }, [TGSI_OPCODE_POW] = { 0, tgsi_to_qir_pow }, [TGSI_OPCODE_TRUNC] = { 0, tgsi_to_qir_trunc }, [TGSI_OPCODE_FRC] = { 0, tgsi_to_qir_frc }, [TGSI_OPCODE_FLR] = { 0, tgsi_to_qir_flr }, [TGSI_OPCODE_SIN] = { 0, tgsi_to_qir_sin }, [TGSI_OPCODE_COS] = { 0, tgsi_to_qir_cos }, }; static int asdf = 0; uint32_t tgsi_op = tgsi_inst->Instruction.Opcode; if (tgsi_op == TGSI_OPCODE_END) return; struct qreg src_regs[12]; for (int s = 0; s < 3; s++) { for (int i = 0; i < 4; i++) { src_regs[4 * s + i] = get_src(c, tgsi_inst->Instruction.Opcode, &tgsi_inst->Src[s].Register, i); } } switch (tgsi_op) { case TGSI_OPCODE_TEX: case TGSI_OPCODE_TXP: case TGSI_OPCODE_TXB: tgsi_to_qir_tex(c, tgsi_inst, op_trans[tgsi_op].op, src_regs); return; case TGSI_OPCODE_KILL: c->discard = qir_uniform_f(c, 1.0); return; case TGSI_OPCODE_KILL_IF: for (int i = 0; i < 4; i++) tgsi_to_qir_kill_if(c, src_regs, i); return; default: break; } if (tgsi_op > ARRAY_SIZE(op_trans) || !(op_trans[tgsi_op].func)) { fprintf(stderr, "unknown tgsi inst: "); tgsi_dump_instruction(tgsi_inst, asdf++); fprintf(stderr, "\n"); abort(); } for (int i = 0; i < 4; i++) { if (!(tgsi_inst->Dst[0].Register.WriteMask & (1 << i))) continue; struct qreg result; result = op_trans[tgsi_op].func(c, tgsi_inst, op_trans[tgsi_op].op, src_regs, i); if (tgsi_inst->Instruction.Saturate) { float low = (tgsi_inst->Instruction.Saturate == TGSI_SAT_MINUS_PLUS_ONE ? -1.0 : 0.0); result = qir_FMAX(c, qir_FMIN(c, result, qir_uniform_f(c, 1.0)), qir_uniform_f(c, low)); } update_dst(c, tgsi_inst, i, result); } } static void parse_tgsi_immediate(struct vc4_compile *c, struct tgsi_full_immediate *imm) { for (int i = 0; i < 4; i++) { unsigned n = c->num_consts++; resize_qreg_array(c, &c->consts, &c->consts_array_size, n + 1); c->consts[n] = qir_uniform_ui(c, imm->u[i].Uint); } } static struct qreg vc4_blend_channel(struct vc4_compile *c, struct qreg *dst, struct qreg *src, struct qreg val, unsigned factor, int channel) { switch(factor) { case PIPE_BLENDFACTOR_ONE: return val; case PIPE_BLENDFACTOR_SRC_COLOR: return qir_FMUL(c, val, src[channel]); case PIPE_BLENDFACTOR_SRC_ALPHA: return qir_FMUL(c, val, src[3]); case PIPE_BLENDFACTOR_DST_ALPHA: return qir_FMUL(c, val, dst[3]); case PIPE_BLENDFACTOR_DST_COLOR: return qir_FMUL(c, val, dst[channel]); case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE: return qir_FMIN(c, src[3], qir_FSUB(c, qir_uniform_f(c, 1.0), dst[3])); case PIPE_BLENDFACTOR_CONST_COLOR: return qir_FMUL(c, val, get_temp_for_uniform(c, QUNIFORM_BLEND_CONST_COLOR, channel)); case PIPE_BLENDFACTOR_CONST_ALPHA: return qir_FMUL(c, val, get_temp_for_uniform(c, QUNIFORM_BLEND_CONST_COLOR, 3)); case PIPE_BLENDFACTOR_ZERO: return qir_uniform_f(c, 0.0); case PIPE_BLENDFACTOR_INV_SRC_COLOR: return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0), src[channel])); case PIPE_BLENDFACTOR_INV_SRC_ALPHA: return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0), src[3])); case PIPE_BLENDFACTOR_INV_DST_ALPHA: return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0), dst[3])); case PIPE_BLENDFACTOR_INV_DST_COLOR: return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0), dst[channel])); case PIPE_BLENDFACTOR_INV_CONST_COLOR: return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0), get_temp_for_uniform(c, QUNIFORM_BLEND_CONST_COLOR, channel))); case PIPE_BLENDFACTOR_INV_CONST_ALPHA: return qir_FMUL(c, val, qir_FSUB(c, qir_uniform_f(c, 1.0), get_temp_for_uniform(c, QUNIFORM_BLEND_CONST_COLOR, 3))); default: case PIPE_BLENDFACTOR_SRC1_COLOR: case PIPE_BLENDFACTOR_SRC1_ALPHA: case PIPE_BLENDFACTOR_INV_SRC1_COLOR: case PIPE_BLENDFACTOR_INV_SRC1_ALPHA: /* Unsupported. */ fprintf(stderr, "Unknown blend factor %d\n", factor); return val; } } static struct qreg vc4_blend_func(struct vc4_compile *c, struct qreg src, struct qreg dst, unsigned func) { switch (func) { case PIPE_BLEND_ADD: return qir_FADD(c, src, dst); case PIPE_BLEND_SUBTRACT: return qir_FSUB(c, src, dst); case PIPE_BLEND_REVERSE_SUBTRACT: return qir_FSUB(c, dst, src); case PIPE_BLEND_MIN: return qir_FMIN(c, src, dst); case PIPE_BLEND_MAX: return qir_FMAX(c, src, dst); default: /* Unsupported. */ fprintf(stderr, "Unknown blend func %d\n", func); return src; } } /** * Implements fixed function blending in shader code. * * VC4 doesn't have any hardware support for blending. Instead, you read the * current contents of the destination from the tile buffer after having * waited for the scoreboard (which is handled by vc4_qpu_emit.c), then do * math using your output color and that destination value, and update the * output color appropriately. */ static void vc4_blend(struct vc4_compile *c, struct qreg *result, struct qreg *dst_color, struct qreg *src_color) { struct pipe_rt_blend_state *blend = &c->fs_key->blend; if (!blend->blend_enable) { for (int i = 0; i < 4; i++) result[i] = src_color[i]; return; } struct qreg src_blend[4], dst_blend[4]; for (int i = 0; i < 3; i++) { src_blend[i] = vc4_blend_channel(c, dst_color, src_color, src_color[i], blend->rgb_src_factor, i); dst_blend[i] = vc4_blend_channel(c, dst_color, src_color, dst_color[i], blend->rgb_dst_factor, i); } src_blend[3] = vc4_blend_channel(c, dst_color, src_color, src_color[3], blend->alpha_src_factor, 3); dst_blend[3] = vc4_blend_channel(c, dst_color, src_color, dst_color[3], blend->alpha_dst_factor, 3); for (int i = 0; i < 3; i++) { result[i] = vc4_blend_func(c, src_blend[i], dst_blend[i], blend->rgb_func); } result[3] = vc4_blend_func(c, src_blend[3], dst_blend[3], blend->alpha_func); } static void alpha_test_discard(struct vc4_compile *c) { struct qreg src_alpha; struct qreg alpha_ref = get_temp_for_uniform(c, QUNIFORM_ALPHA_REF, 0); if (!c->fs_key->alpha_test) return; if (c->output_color_index != -1) src_alpha = c->outputs[c->output_color_index + 3]; else src_alpha = qir_uniform_f(c, 1.0); if (c->discard.file == QFILE_NULL) c->discard = qir_uniform_f(c, 0.0); switch (c->fs_key->alpha_test_func) { case PIPE_FUNC_NEVER: c->discard = qir_uniform_f(c, 1.0); break; case PIPE_FUNC_ALWAYS: break; case PIPE_FUNC_EQUAL: qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref)); c->discard = qir_SEL_X_Y_ZS(c, c->discard, qir_uniform_f(c, 1.0)); break; case PIPE_FUNC_NOTEQUAL: qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref)); c->discard = qir_SEL_X_Y_ZC(c, c->discard, qir_uniform_f(c, 1.0)); break; case PIPE_FUNC_GREATER: qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref)); c->discard = qir_SEL_X_Y_NC(c, c->discard, qir_uniform_f(c, 1.0)); break; case PIPE_FUNC_GEQUAL: qir_SF(c, qir_FSUB(c, alpha_ref, src_alpha)); c->discard = qir_SEL_X_Y_NS(c, c->discard, qir_uniform_f(c, 1.0)); break; case PIPE_FUNC_LESS: qir_SF(c, qir_FSUB(c, src_alpha, alpha_ref)); c->discard = qir_SEL_X_Y_NS(c, c->discard, qir_uniform_f(c, 1.0)); break; case PIPE_FUNC_LEQUAL: qir_SF(c, qir_FSUB(c, alpha_ref, src_alpha)); c->discard = qir_SEL_X_Y_NC(c, c->discard, qir_uniform_f(c, 1.0)); break; } } static void emit_frag_end(struct vc4_compile *c) { alpha_test_discard(c); enum pipe_format color_format = c->fs_key->color_format; const uint8_t *format_swiz = vc4_get_format_swizzle(color_format); struct qreg tlb_read_color[4] = { c->undef, c->undef, c->undef, c->undef }; struct qreg dst_color[4] = { c->undef, c->undef, c->undef, c->undef }; if (c->fs_key->blend.blend_enable || c->fs_key->blend.colormask != 0xf) { struct qreg r4 = qir_TLB_COLOR_READ(c); for (int i = 0; i < 4; i++) tlb_read_color[i] = qir_R4_UNPACK(c, r4, i); for (int i = 0; i < 4; i++) dst_color[i] = get_swizzled_channel(c, tlb_read_color, format_swiz[i]); } struct qreg blend_color[4]; struct qreg undef_array[4] = { c->undef, c->undef, c->undef, c->undef }; vc4_blend(c, blend_color, dst_color, (c->output_color_index != -1 ? c->outputs + c->output_color_index : undef_array)); /* If the bit isn't set in the color mask, then just return the * original dst color, instead. */ for (int i = 0; i < 4; i++) { if (!(c->fs_key->blend.colormask & (1 << i))) { blend_color[i] = dst_color[i]; } } /* Debug: Sometimes you're getting a black output and just want to see * if the FS is getting executed at all. Spam magenta into the color * output. */ if (0) { blend_color[0] = qir_uniform_f(c, 1.0); blend_color[1] = qir_uniform_f(c, 0.0); blend_color[2] = qir_uniform_f(c, 1.0); blend_color[3] = qir_uniform_f(c, 0.5); } struct qreg swizzled_outputs[4]; for (int i = 0; i < 4; i++) { swizzled_outputs[i] = get_swizzled_channel(c, blend_color, format_swiz[i]); } if (c->discard.file != QFILE_NULL) qir_TLB_DISCARD_SETUP(c, c->discard); if (c->fs_key->stencil_enabled) { qir_TLB_STENCIL_SETUP(c, add_uniform(c, QUNIFORM_STENCIL, 0)); if (c->fs_key->stencil_twoside) { qir_TLB_STENCIL_SETUP(c, add_uniform(c, QUNIFORM_STENCIL, 1)); } if (c->fs_key->stencil_full_writemasks) { qir_TLB_STENCIL_SETUP(c, add_uniform(c, QUNIFORM_STENCIL, 2)); } } if (c->fs_key->depth_enabled) { struct qreg z; if (c->output_position_index != -1) { z = qir_FTOI(c, qir_FMUL(c, c->outputs[c->output_position_index + 2], qir_uniform_f(c, 0xffffff))); } else { z = qir_FRAG_Z(c); } qir_TLB_Z_WRITE(c, z); } bool color_written = false; for (int i = 0; i < 4; i++) { if (swizzled_outputs[i].file != QFILE_NULL) color_written = true; } struct qreg packed_color; if (color_written) { /* Fill in any undefined colors. The simulator will assertion * fail if we read something that wasn't written, and I don't * know what hardware does. */ for (int i = 0; i < 4; i++) { if (swizzled_outputs[i].file == QFILE_NULL) swizzled_outputs[i] = qir_uniform_f(c, 0.0); } packed_color = qir_get_temp(c); qir_emit(c, qir_inst4(QOP_PACK_COLORS, packed_color, swizzled_outputs[0], swizzled_outputs[1], swizzled_outputs[2], swizzled_outputs[3])); } else { packed_color = qir_uniform_ui(c, 0); } qir_emit(c, qir_inst(QOP_TLB_COLOR_WRITE, c->undef, packed_color, c->undef)); } static void emit_scaled_viewport_write(struct vc4_compile *c, struct qreg rcp_w) { struct qreg xyi[2]; for (int i = 0; i < 2; i++) { struct qreg scale = add_uniform(c, QUNIFORM_VIEWPORT_X_SCALE + i, 0); xyi[i] = qir_FTOI(c, qir_FMUL(c, qir_FMUL(c, c->outputs[i], scale), rcp_w)); } qir_VPM_WRITE(c, qir_PACK_SCALED(c, xyi[0], xyi[1])); } static void emit_zs_write(struct vc4_compile *c, struct qreg rcp_w) { struct qreg zscale = add_uniform(c, QUNIFORM_VIEWPORT_Z_SCALE, 0); struct qreg zoffset = add_uniform(c, QUNIFORM_VIEWPORT_Z_OFFSET, 0); qir_VPM_WRITE(c, qir_FMUL(c, qir_FADD(c, qir_FMUL(c, c->outputs[2], zscale), zoffset), rcp_w)); } static void emit_rcp_wc_write(struct vc4_compile *c, struct qreg rcp_w) { qir_VPM_WRITE(c, rcp_w); } static void emit_point_size_write(struct vc4_compile *c) { struct qreg point_size; if (c->output_point_size_index) point_size = c->outputs[c->output_point_size_index + 3]; else point_size = qir_uniform_f(c, 1.0); /* Workaround: HW-2726 PTB does not handle zero-size points (BCM2835, * BCM21553). */ point_size = qir_FMAX(c, point_size, qir_uniform_f(c, .125)); qir_VPM_WRITE(c, point_size); } static void emit_vert_end(struct vc4_compile *c) { struct qreg rcp_w = qir_RCP(c, c->outputs[3]); emit_scaled_viewport_write(c, rcp_w); emit_zs_write(c, rcp_w); emit_rcp_wc_write(c, rcp_w); if (c->vs_key->per_vertex_point_size) emit_point_size_write(c); for (int i = 4; i < c->num_outputs; i++) { qir_VPM_WRITE(c, c->outputs[i]); } } static void emit_coord_end(struct vc4_compile *c) { struct qreg rcp_w = qir_RCP(c, c->outputs[3]); for (int i = 0; i < 4; i++) qir_VPM_WRITE(c, c->outputs[i]); emit_scaled_viewport_write(c, rcp_w); emit_zs_write(c, rcp_w); emit_rcp_wc_write(c, rcp_w); if (c->vs_key->per_vertex_point_size) emit_point_size_write(c); } static struct vc4_compile * vc4_shader_tgsi_to_qir(struct vc4_context *vc4, struct vc4_compiled_shader *shader, enum qstage stage, struct vc4_key *key) { struct vc4_compile *c = qir_compile_init(); int ret; c->stage = stage; c->uniform_data = ralloc_array(c, uint32_t, 1024); c->uniform_contents = ralloc_array(c, enum quniform_contents, 1024); c->shader_state = key->shader_state; ret = tgsi_parse_init(&c->parser, c->shader_state->tokens); assert(ret == TGSI_PARSE_OK); if (vc4_debug & VC4_DEBUG_TGSI) { fprintf(stderr, "TGSI:\n"); tgsi_dump(c->shader_state->tokens, 0); } c->key = key; switch (stage) { case QSTAGE_FRAG: c->fs_key = (struct vc4_fs_key *)key; if (c->fs_key->is_points) { c->point_x = emit_fragment_varying(c, 0); c->point_y = emit_fragment_varying(c, 0); } else if (c->fs_key->is_lines) { c->line_x = emit_fragment_varying(c, 0); } break; case QSTAGE_VERT: c->vs_key = (struct vc4_vs_key *)key; break; case QSTAGE_COORD: c->vs_key = (struct vc4_vs_key *)key; break; } while (!tgsi_parse_end_of_tokens(&c->parser)) { tgsi_parse_token(&c->parser); switch (c->parser.FullToken.Token.Type) { case TGSI_TOKEN_TYPE_DECLARATION: emit_tgsi_declaration(c, &c->parser.FullToken.FullDeclaration); break; case TGSI_TOKEN_TYPE_INSTRUCTION: emit_tgsi_instruction(c, &c->parser.FullToken.FullInstruction); break; case TGSI_TOKEN_TYPE_IMMEDIATE: parse_tgsi_immediate(c, &c->parser.FullToken.FullImmediate); break; } } switch (stage) { case QSTAGE_FRAG: emit_frag_end(c); break; case QSTAGE_VERT: emit_vert_end(c); break; case QSTAGE_COORD: emit_coord_end(c); break; } tgsi_parse_free(&c->parser); qir_optimize(c); if (vc4_debug & VC4_DEBUG_QIR) { fprintf(stderr, "QIR:\n"); qir_dump(c); } qir_reorder_uniforms(c); vc4_generate_code(vc4, c); if (vc4_debug & VC4_DEBUG_SHADERDB) { fprintf(stderr, "SHADER-DB: %s: %d instructions\n", qir_get_stage_name(c->stage), c->qpu_inst_count); fprintf(stderr, "SHADER-DB: %s: %d uniforms\n", qir_get_stage_name(c->stage), c->num_uniforms); } return c; } static void * vc4_shader_state_create(struct pipe_context *pctx, const struct pipe_shader_state *cso) { struct pipe_shader_state *so = CALLOC_STRUCT(pipe_shader_state); if (!so) return NULL; so->tokens = tgsi_dup_tokens(cso->tokens); return so; } static void copy_uniform_state_to_shader(struct vc4_compiled_shader *shader, int shader_index, struct vc4_compile *c) { int count = c->num_uniforms; struct vc4_shader_uniform_info *uinfo = &shader->uniforms[shader_index]; uinfo->count = count; uinfo->data = malloc(count * sizeof(*uinfo->data)); memcpy(uinfo->data, c->uniform_data, count * sizeof(*uinfo->data)); uinfo->contents = malloc(count * sizeof(*uinfo->contents)); memcpy(uinfo->contents, c->uniform_contents, count * sizeof(*uinfo->contents)); uinfo->num_texture_samples = c->num_texture_samples; } static void vc4_fs_compile(struct vc4_context *vc4, struct vc4_compiled_shader *shader, struct vc4_fs_key *key) { struct vc4_compile *c = vc4_shader_tgsi_to_qir(vc4, shader, QSTAGE_FRAG, &key->base); shader->num_inputs = c->num_inputs; shader->color_inputs = c->color_inputs; copy_uniform_state_to_shader(shader, 0, c); shader->bo = vc4_bo_alloc_mem(vc4->screen, c->qpu_insts, c->qpu_inst_count * sizeof(uint64_t), "fs_code"); qir_compile_destroy(c); } static void vc4_vs_compile(struct vc4_context *vc4, struct vc4_compiled_shader *shader, struct vc4_vs_key *key) { struct vc4_compile *vs_c = vc4_shader_tgsi_to_qir(vc4, shader, QSTAGE_VERT, &key->base); copy_uniform_state_to_shader(shader, 0, vs_c); struct vc4_compile *cs_c = vc4_shader_tgsi_to_qir(vc4, shader, QSTAGE_COORD, &key->base); copy_uniform_state_to_shader(shader, 1, cs_c); uint32_t vs_size = vs_c->qpu_inst_count * sizeof(uint64_t); uint32_t cs_size = cs_c->qpu_inst_count * sizeof(uint64_t); shader->coord_shader_offset = vs_size; /* XXX: alignment? */ shader->bo = vc4_bo_alloc(vc4->screen, shader->coord_shader_offset + cs_size, "vs_code"); void *map = vc4_bo_map(shader->bo); memcpy(map, vs_c->qpu_insts, vs_size); memcpy(map + shader->coord_shader_offset, cs_c->qpu_insts, cs_size); qir_compile_destroy(vs_c); qir_compile_destroy(cs_c); } static void vc4_setup_shared_key(struct vc4_key *key, struct vc4_texture_stateobj *texstate) { for (int i = 0; i < texstate->num_textures; i++) { struct pipe_sampler_view *sampler = texstate->textures[i]; struct pipe_sampler_state *sampler_state = texstate->samplers[i]; if (sampler) { struct pipe_resource *prsc = sampler->texture; key->tex[i].format = prsc->format; key->tex[i].swizzle[0] = sampler->swizzle_r; key->tex[i].swizzle[1] = sampler->swizzle_g; key->tex[i].swizzle[2] = sampler->swizzle_b; key->tex[i].swizzle[3] = sampler->swizzle_a; key->tex[i].compare_mode = sampler_state->compare_mode; key->tex[i].compare_func = sampler_state->compare_func; } } } static void vc4_update_compiled_fs(struct vc4_context *vc4, uint8_t prim_mode) { struct vc4_fs_key local_key; struct vc4_fs_key *key = &local_key; memset(key, 0, sizeof(*key)); vc4_setup_shared_key(&key->base, &vc4->fragtex); key->base.shader_state = vc4->prog.bind_fs; key->is_points = (prim_mode == PIPE_PRIM_POINTS); key->is_lines = (prim_mode >= PIPE_PRIM_LINES && prim_mode <= PIPE_PRIM_LINE_STRIP); key->blend = vc4->blend->rt[0]; if (vc4->framebuffer.cbufs[0]) key->color_format = vc4->framebuffer.cbufs[0]->format; key->stencil_enabled = vc4->zsa->stencil_uniforms[0] != 0; key->stencil_twoside = vc4->zsa->stencil_uniforms[1] != 0; key->stencil_full_writemasks = vc4->zsa->stencil_uniforms[2] != 0; key->depth_enabled = (vc4->zsa->base.depth.enabled || key->stencil_enabled); if (vc4->zsa->base.alpha.enabled) { key->alpha_test = true; key->alpha_test_func = vc4->zsa->base.alpha.func; } if (key->is_points) { key->point_sprite_mask = vc4->rasterizer->base.sprite_coord_enable; key->point_coord_upper_left = (vc4->rasterizer->base.sprite_coord_mode == PIPE_SPRITE_COORD_UPPER_LEFT); } vc4->prog.fs = util_hash_table_get(vc4->fs_cache, key); if (vc4->prog.fs) return; key = malloc(sizeof(*key)); memcpy(key, &local_key, sizeof(*key)); struct vc4_compiled_shader *shader = CALLOC_STRUCT(vc4_compiled_shader); vc4_fs_compile(vc4, shader, key); util_hash_table_set(vc4->fs_cache, key, shader); if (vc4->rasterizer->base.flatshade && vc4->prog.fs && vc4->prog.fs->color_inputs != shader->color_inputs) { vc4->dirty |= VC4_DIRTY_FLAT_SHADE_FLAGS; } vc4->prog.fs = shader; } static void vc4_update_compiled_vs(struct vc4_context *vc4, uint8_t prim_mode) { struct vc4_vs_key local_key; struct vc4_vs_key *key = &local_key; memset(key, 0, sizeof(*key)); vc4_setup_shared_key(&key->base, &vc4->verttex); key->base.shader_state = vc4->prog.bind_vs; for (int i = 0; i < ARRAY_SIZE(key->attr_formats); i++) key->attr_formats[i] = vc4->vtx->pipe[i].src_format; key->per_vertex_point_size = (prim_mode == PIPE_PRIM_POINTS && vc4->rasterizer->base.point_size_per_vertex); vc4->prog.vs = util_hash_table_get(vc4->vs_cache, key); if (vc4->prog.vs) return; key = malloc(sizeof(*key)); memcpy(key, &local_key, sizeof(*key)); struct vc4_compiled_shader *shader = CALLOC_STRUCT(vc4_compiled_shader); vc4_vs_compile(vc4, shader, key); util_hash_table_set(vc4->vs_cache, key, shader); vc4->prog.vs = shader; } void vc4_update_compiled_shaders(struct vc4_context *vc4, uint8_t prim_mode) { vc4_update_compiled_fs(vc4, prim_mode); vc4_update_compiled_vs(vc4, prim_mode); } static unsigned fs_cache_hash(void *key) { return util_hash_crc32(key, sizeof(struct vc4_fs_key)); } static unsigned vs_cache_hash(void *key) { return util_hash_crc32(key, sizeof(struct vc4_vs_key)); } static int fs_cache_compare(void *key1, void *key2) { return memcmp(key1, key2, sizeof(struct vc4_fs_key)); } static int vs_cache_compare(void *key1, void *key2) { return memcmp(key1, key2, sizeof(struct vc4_vs_key)); } struct delete_state { struct vc4_context *vc4; struct pipe_shader_state *shader_state; }; static enum pipe_error fs_delete_from_cache(void *in_key, void *in_value, void *data) { struct delete_state *del = data; struct vc4_fs_key *key = in_key; struct vc4_compiled_shader *shader = in_value; if (key->base.shader_state == data) { util_hash_table_remove(del->vc4->fs_cache, key); vc4_bo_unreference(&shader->bo); free(shader); } return 0; } static enum pipe_error vs_delete_from_cache(void *in_key, void *in_value, void *data) { struct delete_state *del = data; struct vc4_vs_key *key = in_key; struct vc4_compiled_shader *shader = in_value; if (key->base.shader_state == data) { util_hash_table_remove(del->vc4->vs_cache, key); vc4_bo_unreference(&shader->bo); free(shader); } return 0; } static void vc4_shader_state_delete(struct pipe_context *pctx, void *hwcso) { struct vc4_context *vc4 = vc4_context(pctx); struct pipe_shader_state *so = hwcso; struct delete_state del; del.vc4 = vc4; del.shader_state = so; util_hash_table_foreach(vc4->fs_cache, fs_delete_from_cache, &del); util_hash_table_foreach(vc4->vs_cache, vs_delete_from_cache, &del); free((void *)so->tokens); free(so); } static uint32_t translate_wrap(uint32_t p_wrap) { switch (p_wrap) { case PIPE_TEX_WRAP_REPEAT: return 0; case PIPE_TEX_WRAP_CLAMP: case PIPE_TEX_WRAP_CLAMP_TO_EDGE: return 1; case PIPE_TEX_WRAP_MIRROR_REPEAT: return 2; case PIPE_TEX_WRAP_CLAMP_TO_BORDER: return 3; default: fprintf(stderr, "Unknown wrap mode %d\n", p_wrap); assert(!"not reached"); return 0; } } static void write_texture_p0(struct vc4_context *vc4, struct vc4_texture_stateobj *texstate, uint32_t unit) { struct pipe_sampler_view *texture = texstate->textures[unit]; struct vc4_resource *rsc = vc4_resource(texture->texture); cl_reloc(vc4, &vc4->uniforms, rsc->bo, rsc->slices[0].offset | texture->u.tex.last_level | ((rsc->vc4_format & 7) << 4)); } static void write_texture_p1(struct vc4_context *vc4, struct vc4_texture_stateobj *texstate, uint32_t unit) { struct pipe_sampler_view *texture = texstate->textures[unit]; struct vc4_resource *rsc = vc4_resource(texture->texture); struct pipe_sampler_state *sampler = texstate->samplers[unit]; static const uint32_t mipfilter_map[] = { [PIPE_TEX_MIPFILTER_NEAREST] = 2, [PIPE_TEX_MIPFILTER_LINEAR] = 4, [PIPE_TEX_MIPFILTER_NONE] = 0 }; static const uint32_t imgfilter_map[] = { [PIPE_TEX_FILTER_NEAREST] = 1, [PIPE_TEX_FILTER_LINEAR] = 0, }; cl_u32(&vc4->uniforms, ((rsc->vc4_format >> 4) << 31) | (texture->texture->height0 << 20) | (texture->texture->width0 << 8) | (imgfilter_map[sampler->mag_img_filter] << 7) | ((imgfilter_map[sampler->min_img_filter] + mipfilter_map[sampler->min_mip_filter]) << 4) | (translate_wrap(sampler->wrap_t) << 2) | (translate_wrap(sampler->wrap_s) << 0)); } static uint32_t get_texrect_scale(struct vc4_texture_stateobj *texstate, enum quniform_contents contents, uint32_t data) { struct pipe_sampler_view *texture = texstate->textures[data]; uint32_t dim; if (contents == QUNIFORM_TEXRECT_SCALE_X) dim = texture->texture->width0; else dim = texture->texture->height0; return fui(1.0f / dim); } void vc4_write_uniforms(struct vc4_context *vc4, struct vc4_compiled_shader *shader, struct vc4_constbuf_stateobj *cb, struct vc4_texture_stateobj *texstate, int shader_index) { struct vc4_shader_uniform_info *uinfo = &shader->uniforms[shader_index]; const uint32_t *gallium_uniforms = cb->cb[0].user_buffer; cl_start_shader_reloc(&vc4->uniforms, uinfo->num_texture_samples); for (int i = 0; i < uinfo->count; i++) { switch (uinfo->contents[i]) { case QUNIFORM_CONSTANT: cl_u32(&vc4->uniforms, uinfo->data[i]); break; case QUNIFORM_UNIFORM: cl_u32(&vc4->uniforms, gallium_uniforms[uinfo->data[i]]); break; case QUNIFORM_VIEWPORT_X_SCALE: cl_f(&vc4->uniforms, vc4->viewport.scale[0] * 16.0f); break; case QUNIFORM_VIEWPORT_Y_SCALE: cl_f(&vc4->uniforms, vc4->viewport.scale[1] * 16.0f); break; case QUNIFORM_VIEWPORT_Z_OFFSET: cl_f(&vc4->uniforms, vc4->viewport.translate[2]); break; case QUNIFORM_VIEWPORT_Z_SCALE: cl_f(&vc4->uniforms, vc4->viewport.scale[2]); break; case QUNIFORM_TEXTURE_CONFIG_P0: write_texture_p0(vc4, texstate, uinfo->data[i]); break; case QUNIFORM_TEXTURE_CONFIG_P1: write_texture_p1(vc4, texstate, uinfo->data[i]); break; case QUNIFORM_TEXRECT_SCALE_X: case QUNIFORM_TEXRECT_SCALE_Y: cl_u32(&vc4->uniforms, get_texrect_scale(texstate, uinfo->contents[i], uinfo->data[i])); break; case QUNIFORM_BLEND_CONST_COLOR: cl_f(&vc4->uniforms, vc4->blend_color.color[uinfo->data[i]]); break; case QUNIFORM_STENCIL: cl_u32(&vc4->uniforms, vc4->zsa->stencil_uniforms[uinfo->data[i]] | (uinfo->data[i] <= 1 ? (vc4->stencil_ref.ref_value[uinfo->data[i]] << 8) : 0)); break; case QUNIFORM_ALPHA_REF: cl_f(&vc4->uniforms, vc4->zsa->base.alpha.ref_value); break; } #if 0 uint32_t written_val = *(uint32_t *)(vc4->uniforms.next - 4); fprintf(stderr, "%p/%d: %d: 0x%08x (%f)\n", shader, shader_index, i, written_val, uif(written_val)); #endif } } static void vc4_fp_state_bind(struct pipe_context *pctx, void *hwcso) { struct vc4_context *vc4 = vc4_context(pctx); vc4->prog.bind_fs = hwcso; vc4->prog.dirty |= VC4_SHADER_DIRTY_FP; vc4->dirty |= VC4_DIRTY_PROG; } static void vc4_vp_state_bind(struct pipe_context *pctx, void *hwcso) { struct vc4_context *vc4 = vc4_context(pctx); vc4->prog.bind_vs = hwcso; vc4->prog.dirty |= VC4_SHADER_DIRTY_VP; vc4->dirty |= VC4_DIRTY_PROG; } void vc4_program_init(struct pipe_context *pctx) { struct vc4_context *vc4 = vc4_context(pctx); pctx->create_vs_state = vc4_shader_state_create; pctx->delete_vs_state = vc4_shader_state_delete; pctx->create_fs_state = vc4_shader_state_create; pctx->delete_fs_state = vc4_shader_state_delete; pctx->bind_fs_state = vc4_fp_state_bind; pctx->bind_vs_state = vc4_vp_state_bind; vc4->fs_cache = util_hash_table_create(fs_cache_hash, fs_cache_compare); vc4->vs_cache = util_hash_table_create(vs_cache_hash, vs_cache_compare); }