/* * © Copyright 2018 Alyssa Rosenzweig * * 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 #include #include "pan_context.h" #include "compiler/nir/nir.h" #include "nir/tgsi_to_nir.h" #include "midgard/midgard_compile.h" #include "util/u_dynarray.h" #include "tgsi/tgsi_dump.h" void panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *meta, const char *src, int type, struct panfrost_shader_state *state) { uint8_t *dst; nir_shader *s; struct pipe_shader_state *cso = state->base; if (cso->type == PIPE_SHADER_IR_NIR) { s = nir_shader_clone(NULL, cso->ir.nir); } else { assert (cso->type == PIPE_SHADER_IR_TGSI); //tgsi_dump(cso->tokens, 0); s = tgsi_to_nir(cso->tokens, ctx->base.screen); } s->info.stage = type == JOB_TYPE_VERTEX ? MESA_SHADER_VERTEX : MESA_SHADER_FRAGMENT; if (s->info.stage == MESA_SHADER_FRAGMENT) { /* Inject the alpha test now if we need to */ if (state->alpha_state.enabled) { NIR_PASS_V(s, nir_lower_alpha_test, state->alpha_state.func, false); } } /* Call out to Midgard compiler given the above NIR */ midgard_program program = { .alpha_ref = state->alpha_state.ref_value }; midgard_compile_shader_nir(s, &program, false); /* Prepare the compiled binary for upload */ int size = program.compiled.size; dst = program.compiled.data; /* Upload the shader. The lookahead tag is ORed on as a tagged pointer. * I bet someone just thought that would be a cute pun. At least, * that's how I'd do it. */ meta->shader = panfrost_upload(&ctx->shaders, dst, size, true) | program.first_tag; util_dynarray_fini(&program.compiled); /* Sysvals are prepended */ program.uniform_count += program.sysval_count; state->sysval_count = program.sysval_count; memcpy(state->sysval, program.sysvals, sizeof(state->sysval[0]) * state->sysval_count); meta->midgard1.uniform_count = MIN2(program.uniform_count, program.uniform_cutoff); meta->attribute_count = program.attribute_count; meta->varying_count = program.varying_count; meta->midgard1.work_count = program.work_register_count; state->can_discard = program.can_discard; state->writes_point_size = program.writes_point_size; state->reads_point_coord = false; /* Separate as primary uniform count is truncated */ state->uniform_count = program.uniform_count; meta->midgard1.unknown2 = 8; /* XXX */ unsigned default_vec1_swizzle = panfrost_get_default_swizzle(1); unsigned default_vec2_swizzle = panfrost_get_default_swizzle(2); unsigned default_vec4_swizzle = panfrost_get_default_swizzle(4); /* Iterate the varyings and emit the corresponding descriptor */ unsigned general_purpose_count = 0; for (unsigned i = 0; i < program.varying_count; ++i) { unsigned location = program.varyings[i]; /* Default to a vec4 varying */ struct mali_attr_meta v = { .format = MALI_RGBA16F, .swizzle = default_vec4_swizzle, .unknown1 = 0x2, }; /* Check for special cases, otherwise assume general varying */ if (location == VARYING_SLOT_POS) { v.index = 1; v.format = MALI_VARYING_POS; } else if (location == VARYING_SLOT_PSIZ) { v.index = 2; v.format = MALI_R16F; v.swizzle = default_vec1_swizzle; state->writes_point_size = true; } else if (location == VARYING_SLOT_PNTC) { v.index = 3; v.format = MALI_RG16F; v.swizzle = default_vec2_swizzle; state->reads_point_coord = true; } else { v.index = 0; v.src_offset = 8 * (general_purpose_count++); } state->varyings[i] = v; } /* Set the stride for the general purpose fp16 vec4 varyings */ state->general_varying_stride = (2 * 4) * general_purpose_count; }