| /* |
| * © 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 <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include "pan_bo.h" |
| #include "pan_context.h" |
| #include "pan_util.h" |
| #include "panfrost-quirks.h" |
| |
| #include "compiler/nir/nir.h" |
| #include "nir/tgsi_to_nir.h" |
| #include "midgard/midgard_compile.h" |
| #include "bifrost/bifrost_compile.h" |
| #include "util/u_dynarray.h" |
| #include "util/u_upload_mgr.h" |
| |
| #include "tgsi/tgsi_dump.h" |
| |
| static void |
| pan_prepare_midgard_props(struct panfrost_shader_state *state, |
| gl_shader_stage stage) |
| { |
| pan_prepare(&state->properties, RENDERER_PROPERTIES); |
| state->properties.uniform_buffer_count = state->ubo_count; |
| state->properties.uniform_count = state->uniform_count; |
| state->properties.writes_globals = state->writes_global; |
| state->properties.suppress_inf_nan = true; /* XXX */ |
| |
| if (stage == MESA_SHADER_FRAGMENT) { |
| /* Work register count, early-z, reads at draw-time */ |
| state->properties.stencil_from_shader = state->writes_stencil; |
| state->properties.helper_invocation_enable = state->helper_invocations; |
| state->properties.depth_source = state->writes_depth ? |
| MALI_DEPTH_SOURCE_SHADER : |
| MALI_DEPTH_SOURCE_FIXED_FUNCTION; |
| } else { |
| state->properties.work_register_count = state->work_reg_count; |
| } |
| } |
| |
| static void |
| pan_prepare_bifrost_props(struct panfrost_shader_state *state, |
| gl_shader_stage stage) |
| { |
| |
| switch (stage) { |
| case MESA_SHADER_VERTEX: |
| pan_prepare(&state->properties, RENDERER_PROPERTIES); |
| state->properties.unknown = 0x800000; /* XXX */ |
| state->properties.uniform_buffer_count = state->ubo_count; |
| |
| pan_prepare(&state->preload, PRELOAD); |
| state->preload.uniform_count = state->uniform_count; |
| state->preload.vertex_id = true; |
| state->preload.instance_id = true; |
| break; |
| case MESA_SHADER_FRAGMENT: |
| pan_prepare(&state->properties, RENDERER_PROPERTIES); |
| /* Early-Z set at draw-time */ |
| state->properties.unknown = 0x950020; /* XXX */ |
| state->properties.uniform_buffer_count = state->ubo_count; |
| state->properties.helper_invocation_enable = state->helper_invocations; |
| |
| pan_prepare(&state->preload, PRELOAD); |
| state->preload.uniform_count = state->uniform_count; |
| state->preload.fragment_position = state->reads_frag_coord; |
| state->preload.unknown = true; |
| break; |
| default: |
| unreachable("TODO"); |
| } |
| } |
| |
| static void |
| pan_upload_shader_descriptor(struct panfrost_context *ctx, |
| struct panfrost_shader_state *state) |
| { |
| const struct panfrost_device *dev = pan_device(ctx->base.screen); |
| struct mali_state_packed *out; |
| |
| u_upload_alloc(ctx->state_uploader, 0, MALI_RENDERER_STATE_LENGTH, MALI_RENDERER_STATE_LENGTH, |
| &state->upload.offset, &state->upload.rsrc, (void **) &out); |
| |
| pan_pack(out, RENDERER_STATE, cfg) { |
| cfg.shader = state->shader; |
| cfg.properties = state->properties; |
| |
| if (dev->quirks & IS_BIFROST) |
| cfg.preload = state->preload; |
| } |
| |
| u_upload_unmap(ctx->state_uploader); |
| } |
| |
| static unsigned |
| pan_format_from_nir_base(nir_alu_type base) |
| { |
| switch (base) { |
| case nir_type_int: |
| return MALI_FORMAT_SINT; |
| case nir_type_uint: |
| case nir_type_bool: |
| return MALI_FORMAT_UINT; |
| case nir_type_float: |
| return MALI_CHANNEL_FLOAT; |
| default: |
| unreachable("Invalid base"); |
| } |
| } |
| |
| static unsigned |
| pan_format_from_nir_size(nir_alu_type base, unsigned size) |
| { |
| if (base == nir_type_float) { |
| switch (size) { |
| case 16: return MALI_FORMAT_SINT; |
| case 32: return MALI_FORMAT_UNORM; |
| default: |
| unreachable("Invalid float size for format"); |
| } |
| } else { |
| switch (size) { |
| case 1: |
| case 8: return MALI_CHANNEL_8; |
| case 16: return MALI_CHANNEL_16; |
| case 32: return MALI_CHANNEL_32; |
| default: |
| unreachable("Invalid int size for format"); |
| } |
| } |
| } |
| |
| static enum mali_format |
| pan_format_from_glsl(const struct glsl_type *type, unsigned precision, unsigned frac) |
| { |
| const struct glsl_type *column = glsl_without_array_or_matrix(type); |
| enum glsl_base_type glsl_base = glsl_get_base_type(column); |
| nir_alu_type t = nir_get_nir_type_for_glsl_base_type(glsl_base); |
| unsigned chan = glsl_get_components(column); |
| |
| /* If we have a fractional location added, we need to increase the size |
| * so it will fit, i.e. a vec3 in YZW requires us to allocate a vec4. |
| * We could do better but this is an edge case as it is, normally |
| * packed varyings will be aligned. */ |
| chan += frac; |
| |
| assert(chan >= 1 && chan <= 4); |
| |
| unsigned base = nir_alu_type_get_base_type(t); |
| unsigned size = nir_alu_type_get_type_size(t); |
| |
| /* Demote to fp16 where possible. int16 varyings are TODO as the hw |
| * will saturate instead of wrap which is not conformant, so we need to |
| * insert i2i16/u2u16 instructions before the st_vary_32i/32u to get |
| * the intended behaviour */ |
| |
| bool is_16 = (precision == GLSL_PRECISION_MEDIUM) |
| || (precision == GLSL_PRECISION_LOW); |
| |
| if (is_16 && base == nir_type_float) |
| size = 16; |
| else |
| size = 32; |
| |
| return pan_format_from_nir_base(base) | |
| pan_format_from_nir_size(base, size) | |
| MALI_NR_CHANNELS(chan); |
| } |
| |
| static enum mali_bifrost_register_file_format |
| bifrost_blend_type_from_nir(nir_alu_type nir_type) |
| { |
| switch(nir_type) { |
| case 0: /* Render target not in use */ |
| return 0; |
| case nir_type_float16: |
| return MALI_BIFROST_REGISTER_FILE_FORMAT_F16; |
| case nir_type_float32: |
| return MALI_BIFROST_REGISTER_FILE_FORMAT_F32; |
| case nir_type_int32: |
| return MALI_BIFROST_REGISTER_FILE_FORMAT_I32; |
| case nir_type_uint32: |
| return MALI_BIFROST_REGISTER_FILE_FORMAT_U32; |
| case nir_type_int16: |
| return MALI_BIFROST_REGISTER_FILE_FORMAT_I16; |
| case nir_type_uint16: |
| return MALI_BIFROST_REGISTER_FILE_FORMAT_U16; |
| default: |
| unreachable("Unsupported blend shader type for NIR alu type"); |
| return 0; |
| } |
| } |
| |
| void |
| panfrost_shader_compile(struct panfrost_context *ctx, |
| enum pipe_shader_ir ir_type, |
| const void *ir, |
| gl_shader_stage stage, |
| struct panfrost_shader_state *state, |
| uint64_t *outputs_written) |
| { |
| struct panfrost_device *dev = pan_device(ctx->base.screen); |
| |
| nir_shader *s; |
| |
| if (ir_type == PIPE_SHADER_IR_NIR) { |
| s = nir_shader_clone(NULL, ir); |
| } else { |
| assert (ir_type == PIPE_SHADER_IR_TGSI); |
| s = tgsi_to_nir(ir, ctx->base.screen, false); |
| } |
| |
| s->info.stage = stage; |
| |
| /* Call out to Midgard compiler given the above NIR */ |
| panfrost_program program = {0}; |
| struct panfrost_compile_inputs inputs = { |
| .gpu_id = dev->gpu_id, |
| .shaderdb = !!(dev->debug & PAN_DBG_PRECOMPILE), |
| }; |
| |
| memcpy(inputs.rt_formats, state->rt_formats, sizeof(inputs.rt_formats)); |
| |
| if (dev->quirks & IS_BIFROST) |
| bifrost_compile_shader_nir(s, &program, &inputs); |
| else |
| midgard_compile_shader_nir(s, &program, &inputs); |
| |
| /* Prepare the compiled binary for upload */ |
| mali_ptr shader = 0; |
| unsigned attribute_count = 0, varying_count = 0; |
| int size = program.compiled.size; |
| |
| if (size) { |
| state->bo = panfrost_bo_create(dev, size, PAN_BO_EXECUTE); |
| memcpy(state->bo->cpu, program.compiled.data, size); |
| shader = state->bo->gpu; |
| } |
| |
| /* Midgard needs the first tag on the bottom nibble */ |
| |
| if (!(dev->quirks & IS_BIFROST)) { |
| /* If size = 0, we tag as "end-of-shader" */ |
| |
| if (size) |
| shader |= program.first_tag; |
| else |
| shader = 0x1; |
| } |
| |
| util_dynarray_fini(&program.compiled); |
| |
| state->sysval_count = program.sysval_count; |
| memcpy(state->sysval, program.sysvals, sizeof(state->sysval[0]) * state->sysval_count); |
| |
| bool vertex_id = s->info.system_values_read & (1 << SYSTEM_VALUE_VERTEX_ID); |
| bool instance_id = s->info.system_values_read & (1 << SYSTEM_VALUE_INSTANCE_ID); |
| |
| /* On Bifrost it's a sysval, on Midgard it's a varying */ |
| state->reads_frag_coord = s->info.system_values_read & (1 << SYSTEM_VALUE_FRAG_COORD); |
| |
| state->writes_global = s->info.writes_memory; |
| |
| switch (stage) { |
| case MESA_SHADER_VERTEX: |
| attribute_count = util_bitcount64(s->info.inputs_read); |
| varying_count = util_bitcount64(s->info.outputs_written); |
| |
| if (vertex_id) |
| attribute_count = MAX2(attribute_count, PAN_VERTEX_ID + 1); |
| |
| if (instance_id) |
| attribute_count = MAX2(attribute_count, PAN_INSTANCE_ID + 1); |
| |
| break; |
| case MESA_SHADER_FRAGMENT: |
| varying_count = util_bitcount64(s->info.inputs_read); |
| if (s->info.outputs_written & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) |
| state->writes_depth = true; |
| if (s->info.outputs_written & BITFIELD64_BIT(FRAG_RESULT_STENCIL)) |
| state->writes_stencil = true; |
| |
| uint64_t outputs_read = s->info.outputs_read; |
| if (outputs_read & BITFIELD64_BIT(FRAG_RESULT_COLOR)) |
| outputs_read |= BITFIELD64_BIT(FRAG_RESULT_DATA0); |
| |
| state->outputs_read = outputs_read >> FRAG_RESULT_DATA0; |
| |
| /* List of reasons we need to execute frag shaders when things |
| * are masked off */ |
| |
| state->fs_sidefx = |
| s->info.writes_memory || |
| s->info.fs.uses_discard || |
| s->info.fs.uses_demote; |
| break; |
| case MESA_SHADER_COMPUTE: |
| /* TODO: images */ |
| state->shared_size = s->info.cs.shared_size; |
| break; |
| default: |
| unreachable("Unknown shader state"); |
| } |
| |
| state->can_discard = s->info.fs.uses_discard; |
| state->helper_invocations = s->info.fs.needs_helper_invocations; |
| state->stack_size = program.tls_size; |
| |
| state->reads_frag_coord = s->info.inputs_read & (1 << VARYING_SLOT_POS); |
| state->reads_point_coord = s->info.inputs_read & (1 << VARYING_SLOT_PNTC); |
| state->reads_face = s->info.inputs_read & (1 << VARYING_SLOT_FACE); |
| state->writes_point_size = s->info.outputs_written & (1 << VARYING_SLOT_PSIZ); |
| |
| if (outputs_written) |
| *outputs_written = s->info.outputs_written; |
| |
| /* Separate as primary uniform count is truncated. Sysvals are prefix |
| * uniforms */ |
| state->uniform_count = MIN2(s->num_uniforms + program.sysval_count, program.uniform_cutoff); |
| state->work_reg_count = program.work_register_count; |
| |
| if (dev->quirks & IS_BIFROST) |
| for (unsigned i = 0; i < ARRAY_SIZE(state->blend_types); i++) |
| state->blend_types[i] = bifrost_blend_type_from_nir(program.blend_types[i]); |
| |
| /* Record the varying mapping for the command stream's bookkeeping */ |
| |
| nir_variable_mode varying_mode = |
| stage == MESA_SHADER_VERTEX ? nir_var_shader_out : nir_var_shader_in; |
| |
| nir_foreach_variable_with_modes(var, s, varying_mode) { |
| unsigned loc = var->data.driver_location; |
| unsigned sz = glsl_count_attribute_slots(var->type, FALSE); |
| |
| for (int c = 0; c < sz; ++c) { |
| state->varyings_loc[loc + c] = var->data.location + c; |
| state->varyings[loc + c] = pan_format_from_glsl(var->type, |
| var->data.precision, var->data.location_frac); |
| } |
| } |
| |
| /* Needed for linkage */ |
| state->attribute_count = attribute_count; |
| state->varying_count = varying_count; |
| state->ubo_count = s->info.num_ubos + 1; /* off-by-one for uniforms */ |
| |
| /* Prepare the descriptors at compile-time */ |
| state->shader.shader = shader; |
| state->shader.attribute_count = attribute_count; |
| state->shader.varying_count = varying_count; |
| state->shader.texture_count = s->info.num_textures; |
| state->shader.sampler_count = s->info.num_textures; |
| |
| if (dev->quirks & IS_BIFROST) |
| pan_prepare_bifrost_props(state, stage); |
| else |
| pan_prepare_midgard_props(state, stage); |
| |
| if (stage != MESA_SHADER_FRAGMENT) |
| pan_upload_shader_descriptor(ctx, state); |
| |
| /* In both clone and tgsi_to_nir paths, the shader is ralloc'd against |
| * a NULL context */ |
| ralloc_free(s); |
| } |