| /* |
| * Copyright (C) 2020 Collabora, Ltd. |
| * |
| * 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. |
| * |
| * Authors: |
| * Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> |
| */ |
| |
| #include <math.h> |
| #include <stdio.h> |
| #include "pan_encoder.h" |
| #include "pan_pool.h" |
| #include "pan_scoreboard.h" |
| #include "pan_texture.h" |
| #include "panfrost-quirks.h" |
| #include "../midgard/midgard_compile.h" |
| #include "compiler/nir/nir_builder.h" |
| #include "util/u_math.h" |
| |
| /* On Midgard, the native blit infrastructure (via MFBD preloads) is broken or |
| * missing in many cases. We instead use software paths as fallbacks to |
| * implement blits, which are done as TILER jobs. No vertex shader is |
| * necessary since we can supply screen-space coordinates directly. |
| * |
| * This is primarily designed as a fallback for preloads but could be extended |
| * for other clears/blits if needed in the future. */ |
| |
| static void |
| panfrost_build_blit_shader(panfrost_program *program, unsigned gpu_id, gl_frag_result loc, nir_alu_type T, bool ms) |
| { |
| bool is_colour = loc >= FRAG_RESULT_DATA0; |
| |
| nir_shader *shader = nir_shader_create(NULL, MESA_SHADER_FRAGMENT, &midgard_nir_options, NULL); |
| nir_function *fn = nir_function_create(shader, "main"); |
| nir_function_impl *impl = nir_function_impl_create(fn); |
| |
| nir_variable *c_src = nir_variable_create(shader, nir_var_shader_in, glsl_vector_type(GLSL_TYPE_FLOAT, 2), "coord"); |
| nir_variable *c_out = nir_variable_create(shader, nir_var_shader_out, glsl_vector_type( |
| GLSL_TYPE_FLOAT, is_colour ? 4 : 1), "out"); |
| |
| c_src->data.location = VARYING_SLOT_TEX0; |
| c_out->data.location = loc; |
| |
| nir_builder _b; |
| nir_builder *b = &_b; |
| nir_builder_init(b, impl); |
| b->cursor = nir_before_block(nir_start_block(impl)); |
| |
| nir_ssa_def *coord = nir_load_var(b, c_src); |
| |
| nir_tex_instr *tex = nir_tex_instr_create(shader, ms ? 3 : 1); |
| |
| tex->dest_type = T; |
| |
| if (ms) { |
| tex->src[0].src_type = nir_tex_src_coord; |
| tex->src[0].src = nir_src_for_ssa(nir_f2i32(b, coord)); |
| tex->coord_components = 2; |
| |
| tex->src[1].src_type = nir_tex_src_ms_index; |
| tex->src[1].src = nir_src_for_ssa(nir_load_sample_id(b)); |
| |
| tex->src[2].src_type = nir_tex_src_lod; |
| tex->src[2].src = nir_src_for_ssa(nir_imm_int(b, 0)); |
| tex->sampler_dim = GLSL_SAMPLER_DIM_MS; |
| tex->op = nir_texop_txf_ms; |
| } else { |
| tex->op = nir_texop_tex; |
| |
| tex->src[0].src_type = nir_tex_src_coord; |
| tex->src[0].src = nir_src_for_ssa(coord); |
| tex->coord_components = 2; |
| |
| tex->sampler_dim = GLSL_SAMPLER_DIM_2D; |
| } |
| |
| nir_ssa_dest_init(&tex->instr, &tex->dest, 4, 32, NULL); |
| nir_builder_instr_insert(b, &tex->instr); |
| |
| if (is_colour) |
| nir_store_var(b, c_out, &tex->dest.ssa, 0xFF); |
| else |
| nir_store_var(b, c_out, nir_channel(b, &tex->dest.ssa, 0), 0xFF); |
| |
| midgard_compile_shader_nir(shader, program, false, 0, gpu_id, false, true); |
| } |
| |
| /* Compile and upload all possible blit shaders ahead-of-time to reduce draw |
| * time overhead. There's only ~30 of them at the moment, so this is fine */ |
| |
| void |
| panfrost_init_blit_shaders(struct panfrost_device *dev) |
| { |
| static const struct { |
| gl_frag_result loc; |
| unsigned types; |
| } shader_descs[] = { |
| { FRAG_RESULT_DEPTH, 1 << PAN_BLIT_FLOAT }, |
| { FRAG_RESULT_STENCIL, 1 << PAN_BLIT_UINT }, |
| { FRAG_RESULT_DATA0, ~0 }, |
| { FRAG_RESULT_DATA1, ~0 }, |
| { FRAG_RESULT_DATA2, ~0 }, |
| { FRAG_RESULT_DATA3, ~0 }, |
| { FRAG_RESULT_DATA4, ~0 }, |
| { FRAG_RESULT_DATA5, ~0 }, |
| { FRAG_RESULT_DATA6, ~0 }, |
| { FRAG_RESULT_DATA7, ~0 } |
| }; |
| |
| nir_alu_type nir_types[PAN_BLIT_NUM_TYPES] = { |
| nir_type_float, |
| nir_type_uint, |
| nir_type_int |
| }; |
| |
| /* Total size = # of shaders * bytes per shader. There are |
| * shaders for each RT (so up to DATA7 -- overestimate is |
| * okay) and up to NUM_TYPES variants of each, * 2 for multisampling |
| * variants. These shaders are simple enough that they should be less |
| * than 8 quadwords each (again, overestimate is fine). */ |
| |
| unsigned offset = 0; |
| unsigned total_size = (FRAG_RESULT_DATA7 * PAN_BLIT_NUM_TYPES) |
| * (8 * 16) * 2; |
| |
| dev->blit_shaders.bo = panfrost_bo_create(dev, total_size, PAN_BO_EXECUTE); |
| |
| /* Don't bother generating multisampling variants if we don't actually |
| * support multisampling */ |
| bool has_ms = !(dev->quirks & MIDGARD_SFBD); |
| |
| for (unsigned ms = 0; ms <= has_ms; ++ms) { |
| for (unsigned i = 0; i < ARRAY_SIZE(shader_descs); ++i) { |
| unsigned loc = shader_descs[i].loc; |
| |
| for (enum pan_blit_type T = 0; T < PAN_BLIT_NUM_TYPES; ++T) { |
| if (!(shader_descs[i].types & (1 << T))) |
| continue; |
| |
| panfrost_program program; |
| panfrost_build_blit_shader(&program, dev->gpu_id, loc, |
| nir_types[T], ms); |
| |
| assert(offset + program.compiled.size < total_size); |
| memcpy(dev->blit_shaders.bo->cpu + offset, program.compiled.data, program.compiled.size); |
| |
| dev->blit_shaders.loads[loc][T][ms] = (dev->blit_shaders.bo->gpu + offset) | program.first_tag; |
| offset += ALIGN_POT(program.compiled.size, 64); |
| util_dynarray_fini(&program.compiled); |
| } |
| } |
| } |
| } |
| |
| /* Add a shader-based load on Midgard (draw-time for GL). Shaders are |
| * precached */ |
| |
| void |
| panfrost_load_midg( |
| struct pan_pool *pool, |
| struct pan_scoreboard *scoreboard, |
| mali_ptr blend_shader, |
| mali_ptr fbd, |
| mali_ptr coordinates, unsigned vertex_count, |
| struct pan_image *image, |
| unsigned loc) |
| { |
| unsigned width = u_minify(image->width0, image->first_level); |
| unsigned height = u_minify(image->height0, image->first_level); |
| |
| struct panfrost_transfer viewport = panfrost_pool_alloc(pool, MALI_VIEWPORT_LENGTH); |
| struct panfrost_transfer sampler = panfrost_pool_alloc(pool, MALI_MIDGARD_SAMPLER_LENGTH); |
| |
| pan_pack(viewport.cpu, VIEWPORT, cfg) { |
| cfg.scissor_maximum_x = width - 1; /* Inclusive */ |
| cfg.scissor_maximum_y = height - 1; |
| } |
| |
| union mali_attr varying = { |
| .elements = coordinates | MALI_ATTR_LINEAR, |
| .stride = 4 * sizeof(float), |
| .size = 4 * sizeof(float) * vertex_count, |
| }; |
| |
| struct mali_attr_meta varying_meta = { |
| .index = 0, |
| .unknown1 = 2, |
| .swizzle = (MALI_CHANNEL_RED << 0) | (MALI_CHANNEL_GREEN << 3), |
| .format = MALI_RGBA32F |
| }; |
| |
| struct mali_stencil_packed stencil; |
| pan_pack(&stencil, STENCIL, cfg) { |
| cfg.compare_function = MALI_FUNC_ALWAYS; |
| cfg.stencil_fail = MALI_STENCIL_OP_REPLACE; |
| cfg.depth_fail = MALI_STENCIL_OP_REPLACE; |
| cfg.depth_pass = MALI_STENCIL_OP_REPLACE; |
| }; |
| |
| union midgard_blend replace = { |
| .equation = { |
| .rgb_mode = 0x122, |
| .alpha_mode = 0x122, |
| .color_mask = MALI_MASK_R | MALI_MASK_G | MALI_MASK_B | MALI_MASK_A, |
| } |
| }; |
| |
| if (blend_shader) |
| replace.shader = blend_shader; |
| |
| /* Determine the sampler type needed. Stencil is always sampled as |
| * UINT. Pure (U)INT is always (U)INT. Everything else is FLOAT. */ |
| |
| enum pan_blit_type T = |
| (loc == FRAG_RESULT_STENCIL) ? PAN_BLIT_UINT : |
| (util_format_is_pure_uint(image->format)) ? PAN_BLIT_UINT : |
| (util_format_is_pure_sint(image->format)) ? PAN_BLIT_INT : |
| PAN_BLIT_FLOAT; |
| |
| bool ms = image->nr_samples > 1; |
| |
| struct mali_shader_meta shader_meta = { |
| .shader = pool->dev->blit_shaders.loads[loc][T][ms], |
| .sampler_count = 1, |
| .texture_count = 1, |
| .varying_count = 1, |
| .midgard1 = { |
| .flags_lo = 0x20, |
| .work_count = 4, |
| }, |
| .coverage_mask = ~0, |
| .unknown2_3 = MALI_DEPTH_FUNC(MALI_FUNC_ALWAYS) | 0x10, |
| .unknown2_4 = 0x4e0, |
| .stencil_mask_front = ~0, |
| .stencil_mask_back = ~0, |
| .stencil_front = stencil, |
| .stencil_back = stencil, |
| .blend = { |
| .shader = blend_shader |
| } |
| }; |
| |
| if (ms) |
| shader_meta.unknown2_3 |= MALI_HAS_MSAA | MALI_PER_SAMPLE; |
| else |
| shader_meta.unknown2_4 |= MALI_NO_MSAA; |
| |
| assert(shader_meta.shader); |
| |
| if (pool->dev->quirks & MIDGARD_SFBD) { |
| shader_meta.unknown2_4 |= (0x10 | MALI_NO_DITHER); |
| shader_meta.blend = replace; |
| |
| if (loc < FRAG_RESULT_DATA0) |
| shader_meta.blend.equation.color_mask = 0x0; |
| } |
| |
| if (loc == FRAG_RESULT_DEPTH) { |
| shader_meta.midgard1.flags_lo |= MALI_WRITES_Z; |
| shader_meta.unknown2_3 |= MALI_DEPTH_WRITEMASK; |
| } else if (loc == FRAG_RESULT_STENCIL) { |
| shader_meta.midgard1.flags_hi |= MALI_WRITES_S; |
| shader_meta.unknown2_4 |= MALI_STENCIL_TEST; |
| } else { |
| shader_meta.midgard1.flags_lo |= MALI_EARLY_Z; |
| } |
| |
| /* Create the texture descriptor. We partially compute the base address |
| * ourselves to account for layer, such that the texture descriptor |
| * itself is for a 2D texture with array size 1 even for 3D/array |
| * textures, removing the need to separately key the blit shaders for |
| * 2D and 3D variants */ |
| |
| struct panfrost_transfer texture_t = panfrost_pool_alloc(pool, MALI_MIDGARD_TEXTURE_LENGTH + sizeof(mali_ptr) * 2 * MAX2(image->nr_samples, 1)); |
| |
| panfrost_new_texture(texture_t.cpu, |
| image->width0, image->height0, |
| MAX2(image->nr_samples, 1), 1, |
| image->format, MALI_TEXTURE_DIMENSION_2D, |
| image->modifier, |
| image->first_level, image->last_level, |
| 0, 0, |
| image->nr_samples, |
| 0, |
| (MALI_CHANNEL_RED << 0) | (MALI_CHANNEL_GREEN << 3) | (MALI_CHANNEL_BLUE << 6) | (MALI_CHANNEL_ALPHA << 9), |
| image->bo->gpu + image->first_layer * |
| panfrost_get_layer_stride(image->slices, |
| image->dim == MALI_TEXTURE_DIMENSION_3D, |
| image->cubemap_stride, image->first_level), |
| image->slices); |
| |
| pan_pack(sampler.cpu, MIDGARD_SAMPLER, cfg) |
| cfg.normalized_coordinates = false; |
| |
| struct panfrost_transfer shader_meta_t = panfrost_pool_alloc(pool, sizeof(shader_meta) + 8 * sizeof(struct midgard_blend_rt)); |
| memcpy(shader_meta_t.cpu, &shader_meta, sizeof(shader_meta)); |
| |
| for (unsigned i = 0; i < 8; ++i) { |
| void *dest = shader_meta_t.cpu + sizeof(shader_meta) + sizeof(struct midgard_blend_rt) * i; |
| |
| if (loc == (FRAG_RESULT_DATA0 + i)) { |
| struct midgard_blend_rt blend_rt = { |
| .flags = 0x200 | MALI_BLEND_NO_DITHER, |
| .blend = replace, |
| }; |
| |
| if (util_format_is_srgb(image->format)) |
| blend_rt.flags |= MALI_BLEND_SRGB; |
| |
| if (blend_shader) { |
| blend_rt.flags |= MALI_BLEND_MRT_SHADER; |
| blend_rt.blend.shader = blend_shader; |
| } |
| |
| memcpy(dest, &blend_rt, sizeof(struct midgard_blend_rt)); |
| } else { |
| memset(dest, 0x0, sizeof(struct midgard_blend_rt)); |
| } |
| } |
| |
| struct midgard_payload_vertex_tiler payload = { |
| .prefix = { |
| .draw_mode = MALI_DRAW_MODE_TRIANGLES, |
| .unknown_draw = 0x3000, |
| .index_count = MALI_POSITIVE(vertex_count) |
| }, |
| .postfix = { |
| .gl_enables = 0x7, |
| .position_varying = coordinates, |
| .textures = panfrost_pool_upload(pool, &texture_t.gpu, sizeof(texture_t.gpu)), |
| .sampler_descriptor = sampler.gpu, |
| .shader = shader_meta_t.gpu, |
| .varyings = panfrost_pool_upload(pool, &varying, sizeof(varying)), |
| .varying_meta = panfrost_pool_upload(pool, &varying_meta, sizeof(varying_meta)), |
| .viewport = viewport.gpu, |
| .shared_memory = fbd |
| } |
| }; |
| |
| panfrost_pack_work_groups_compute(&payload.prefix, 1, vertex_count, 1, 1, 1, 1, true); |
| payload.prefix.workgroups_x_shift_3 = 6; |
| |
| panfrost_new_job(pool, scoreboard, MALI_JOB_TYPE_TILER, false, 0, &payload, sizeof(payload), true); |
| } |