/* * Copyright (C) 2018 Alyssa Rosenzweig * 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. */ #include "util/macros.h" #include "util/u_prim.h" #include "util/u_vbuf.h" #include "util/u_helpers.h" #include "panfrost-quirks.h" #include "pan_pool.h" #include "pan_bo.h" #include "pan_cmdstream.h" #include "pan_context.h" #include "pan_job.h" /* If a BO is accessed for a particular shader stage, will it be in the primary * batch (vertex/tiler) or the secondary batch (fragment)? Anything but * fragment will be primary, e.g. compute jobs will be considered * "vertex/tiler" by analogy */ static inline uint32_t panfrost_bo_access_for_stage(enum pipe_shader_type stage) { assert(stage == PIPE_SHADER_FRAGMENT || stage == PIPE_SHADER_VERTEX || stage == PIPE_SHADER_COMPUTE); return stage == PIPE_SHADER_FRAGMENT ? PAN_BO_ACCESS_FRAGMENT : PAN_BO_ACCESS_VERTEX_TILER; } /* Gets a GPU address for the associated index buffer. Only gauranteed to be * good for the duration of the draw (transient), could last longer. Also get * the bounds on the index buffer for the range accessed by the draw. We do * these operations together because there are natural optimizations which * require them to be together. */ mali_ptr panfrost_get_index_buffer_bounded(struct panfrost_context *ctx, const struct pipe_draw_info *info, unsigned *min_index, unsigned *max_index) { struct panfrost_resource *rsrc = pan_resource(info->index.resource); struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx); off_t offset = info->start * info->index_size; bool needs_indices = true; mali_ptr out = 0; if (info->max_index != ~0u) { *min_index = info->min_index; *max_index = info->max_index; needs_indices = false; } if (!info->has_user_indices) { /* Only resources can be directly mapped */ panfrost_batch_add_bo(batch, rsrc->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | PAN_BO_ACCESS_VERTEX_TILER); out = rsrc->bo->ptr.gpu + offset; /* Check the cache */ needs_indices = !panfrost_minmax_cache_get(rsrc->index_cache, info->start, info->count, min_index, max_index); } else { /* Otherwise, we need to upload to transient memory */ const uint8_t *ibuf8 = (const uint8_t *) info->index.user; struct panfrost_ptr T = panfrost_pool_alloc_aligned(&batch->pool, info->count * info->index_size, info->index_size); memcpy(T.cpu, ibuf8 + offset, info->count * info->index_size); out = T.gpu; } if (needs_indices) { /* Fallback */ u_vbuf_get_minmax_index(&ctx->base, info, min_index, max_index); if (!info->has_user_indices) panfrost_minmax_cache_add(rsrc->index_cache, info->start, info->count, *min_index, *max_index); } return out; } static unsigned translate_tex_wrap(enum pipe_tex_wrap w) { switch (w) { case PIPE_TEX_WRAP_REPEAT: return MALI_WRAP_MODE_REPEAT; case PIPE_TEX_WRAP_CLAMP: return MALI_WRAP_MODE_CLAMP; case PIPE_TEX_WRAP_CLAMP_TO_EDGE: return MALI_WRAP_MODE_CLAMP_TO_EDGE; case PIPE_TEX_WRAP_CLAMP_TO_BORDER: return MALI_WRAP_MODE_CLAMP_TO_BORDER; case PIPE_TEX_WRAP_MIRROR_REPEAT: return MALI_WRAP_MODE_MIRRORED_REPEAT; case PIPE_TEX_WRAP_MIRROR_CLAMP: return MALI_WRAP_MODE_MIRRORED_CLAMP; case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: return MALI_WRAP_MODE_MIRRORED_CLAMP_TO_EDGE; case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: return MALI_WRAP_MODE_MIRRORED_CLAMP_TO_BORDER; default: unreachable("Invalid wrap"); } } /* The hardware compares in the wrong order order, so we have to flip before * encoding. Yes, really. */ static enum mali_func panfrost_sampler_compare_func(const struct pipe_sampler_state *cso) { if (!cso->compare_mode) return MALI_FUNC_NEVER; enum mali_func f = panfrost_translate_compare_func(cso->compare_func); return panfrost_flip_compare_func(f); } static enum mali_mipmap_mode pan_pipe_to_mipmode(enum pipe_tex_mipfilter f) { switch (f) { case PIPE_TEX_MIPFILTER_NEAREST: return MALI_MIPMAP_MODE_NEAREST; case PIPE_TEX_MIPFILTER_LINEAR: return MALI_MIPMAP_MODE_TRILINEAR; case PIPE_TEX_MIPFILTER_NONE: return MALI_MIPMAP_MODE_NONE; default: unreachable("Invalid"); } } void panfrost_sampler_desc_init(const struct pipe_sampler_state *cso, struct mali_midgard_sampler_packed *hw) { pan_pack(hw, MIDGARD_SAMPLER, cfg) { cfg.magnify_nearest = cso->mag_img_filter == PIPE_TEX_FILTER_NEAREST; cfg.minify_nearest = cso->min_img_filter == PIPE_TEX_FILTER_NEAREST; cfg.mipmap_mode = (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR) ? MALI_MIPMAP_MODE_TRILINEAR : MALI_MIPMAP_MODE_NEAREST; cfg.normalized_coordinates = cso->normalized_coords; cfg.lod_bias = FIXED_16(cso->lod_bias, true); cfg.minimum_lod = FIXED_16(cso->min_lod, false); /* If necessary, we disable mipmapping in the sampler descriptor by * clamping the LOD as tight as possible (from 0 to epsilon, * essentially -- remember these are fixed point numbers, so * epsilon=1/256) */ cfg.maximum_lod = (cso->min_mip_filter == PIPE_TEX_MIPFILTER_NONE) ? cfg.minimum_lod + 1 : FIXED_16(cso->max_lod, false); cfg.wrap_mode_s = translate_tex_wrap(cso->wrap_s); cfg.wrap_mode_t = translate_tex_wrap(cso->wrap_t); cfg.wrap_mode_r = translate_tex_wrap(cso->wrap_r); cfg.compare_function = panfrost_sampler_compare_func(cso); cfg.seamless_cube_map = cso->seamless_cube_map; cfg.border_color_r = cso->border_color.f[0]; cfg.border_color_g = cso->border_color.f[1]; cfg.border_color_b = cso->border_color.f[2]; cfg.border_color_a = cso->border_color.f[3]; } } void panfrost_sampler_desc_init_bifrost(const struct pipe_sampler_state *cso, struct mali_bifrost_sampler_packed *hw) { pan_pack(hw, BIFROST_SAMPLER, cfg) { cfg.point_sample_magnify = cso->mag_img_filter == PIPE_TEX_FILTER_NEAREST; cfg.point_sample_minify = cso->min_img_filter == PIPE_TEX_FILTER_NEAREST; cfg.mipmap_mode = pan_pipe_to_mipmode(cso->min_mip_filter); cfg.normalized_coordinates = cso->normalized_coords; cfg.lod_bias = FIXED_16(cso->lod_bias, true); cfg.minimum_lod = FIXED_16(cso->min_lod, false); cfg.maximum_lod = FIXED_16(cso->max_lod, false); cfg.wrap_mode_s = translate_tex_wrap(cso->wrap_s); cfg.wrap_mode_t = translate_tex_wrap(cso->wrap_t); cfg.wrap_mode_r = translate_tex_wrap(cso->wrap_r); cfg.compare_function = panfrost_sampler_compare_func(cso); cfg.seamless_cube_map = cso->seamless_cube_map; } } static bool panfrost_fs_required( struct panfrost_shader_state *fs, struct panfrost_blend_final *blend, unsigned rt_count) { /* If we generally have side effects */ if (fs->fs_sidefx) return true; /* If colour is written we need to execute */ for (unsigned i = 0; i < rt_count; ++i) { if (!blend[i].no_colour) return true; } /* If depth is written and not implied we need to execute. * TODO: Predicate on Z/S writes being enabled */ return (fs->writes_depth || fs->writes_stencil); } static void panfrost_emit_bifrost_blend(struct panfrost_batch *batch, struct panfrost_blend_final *blend, void *rts) { unsigned rt_count = batch->key.nr_cbufs; if (rt_count == 0) { /* Disable blending for depth-only */ pan_pack(rts, BLEND, cfg) { cfg.enable = false; cfg.bifrost.internal.mode = MALI_BIFROST_BLEND_MODE_OFF; } return; } const struct panfrost_device *dev = pan_device(batch->ctx->base.screen); struct panfrost_shader_state *fs = panfrost_get_shader_state(batch->ctx, PIPE_SHADER_FRAGMENT); for (unsigned i = 0; i < rt_count; ++i) { pan_pack(rts + i * MALI_BLEND_LENGTH, BLEND, cfg) { if (blend[i].no_colour) { cfg.enable = false; } else { cfg.srgb = util_format_is_srgb(batch->key.cbufs[i]->format); cfg.load_destination = blend[i].load_dest; cfg.round_to_fb_precision = !batch->ctx->blend->base.dither; } if (blend[i].is_shader) { /* The blend shader's address needs to be at * the same top 32 bit as the fragment shader. * TODO: Ensure that's always the case. */ assert((blend[i].shader.gpu & (0xffffffffull << 32)) == (fs->bo->ptr.gpu & (0xffffffffull << 32))); cfg.bifrost.internal.shader.pc = (u32)blend[i].shader.gpu; assert(!(fs->blend_ret_addrs[i] & 0x7)); cfg.bifrost.internal.shader.return_value = fs->blend_ret_addrs[i]; cfg.bifrost.internal.mode = MALI_BIFROST_BLEND_MODE_SHADER; } else { enum pipe_format format = batch->key.cbufs[i]->format; const struct util_format_description *format_desc; unsigned chan_size = 0; format_desc = util_format_description(format); for (unsigned i = 0; i < format_desc->nr_channels; i++) chan_size = MAX2(format_desc->channel[0].size, chan_size); cfg.bifrost.equation = blend[i].equation.equation; /* Fixed point constant */ u16 constant = blend[i].equation.constant * ((1 << chan_size) - 1); constant <<= 16 - chan_size; cfg.bifrost.constant = constant; if (blend[i].opaque) cfg.bifrost.internal.mode = MALI_BIFROST_BLEND_MODE_OPAQUE; else cfg.bifrost.internal.mode = MALI_BIFROST_BLEND_MODE_FIXED_FUNCTION; /* If we want the conversion to work properly, * num_comps must be set to 4 */ cfg.bifrost.internal.fixed_function.num_comps = 4; cfg.bifrost.internal.fixed_function.conversion.memory_format.format = panfrost_format_to_bifrost_blend(format_desc, true); if (dev->quirks & HAS_SWIZZLES) { cfg.bifrost.internal.fixed_function.conversion.memory_format.swizzle = panfrost_get_default_swizzle(4); } cfg.bifrost.internal.fixed_function.conversion.register_format = fs->blend_types[i]; } } } } static void panfrost_emit_midgard_blend(struct panfrost_batch *batch, struct panfrost_blend_final *blend, void *rts) { unsigned rt_count = batch->key.nr_cbufs; if (rt_count == 0) { /* Disable blending for depth-only */ pan_pack(rts, BLEND, cfg) { cfg.midgard.equation.color_mask = 0xf; cfg.midgard.equation.rgb.a = MALI_BLEND_OPERAND_A_SRC; cfg.midgard.equation.rgb.b = MALI_BLEND_OPERAND_B_SRC; cfg.midgard.equation.rgb.c = MALI_BLEND_OPERAND_C_ZERO; cfg.midgard.equation.alpha.a = MALI_BLEND_OPERAND_A_SRC; cfg.midgard.equation.alpha.b = MALI_BLEND_OPERAND_B_SRC; cfg.midgard.equation.alpha.c = MALI_BLEND_OPERAND_C_ZERO; } return; } for (unsigned i = 0; i < rt_count; ++i) { pan_pack(rts + i * MALI_BLEND_LENGTH, BLEND, cfg) { if (blend[i].no_colour) { cfg.enable = false; continue; } cfg.srgb = util_format_is_srgb(batch->key.cbufs[i]->format); cfg.load_destination = blend[i].load_dest; cfg.round_to_fb_precision = !batch->ctx->blend->base.dither; cfg.midgard.blend_shader = blend[i].is_shader; if (blend[i].is_shader) { cfg.midgard.shader_pc = blend[i].shader.gpu | blend[i].shader.first_tag; } else { cfg.midgard.equation = blend[i].equation.equation; cfg.midgard.constant = blend[i].equation.constant; } } } } static void panfrost_emit_blend(struct panfrost_batch *batch, void *rts, struct panfrost_blend_final *blend) { const struct panfrost_device *dev = pan_device(batch->ctx->base.screen); if (dev->quirks & IS_BIFROST) panfrost_emit_bifrost_blend(batch, blend, rts); else panfrost_emit_midgard_blend(batch, blend, rts); for (unsigned i = 0; i < batch->key.nr_cbufs; ++i) { if (!blend[i].no_colour) batch->draws |= (PIPE_CLEAR_COLOR0 << i); } } static void panfrost_prepare_bifrost_fs_state(struct panfrost_context *ctx, struct panfrost_blend_final *blend, struct MALI_RENDERER_STATE *state) { struct panfrost_shader_state *fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT); unsigned rt_count = ctx->pipe_framebuffer.nr_cbufs; if (!panfrost_fs_required(fs, blend, rt_count)) { state->properties.uniform_buffer_count = 32; state->properties.bifrost.shader_modifies_coverage = true; state->properties.bifrost.allow_forward_pixel_to_kill = true; state->properties.bifrost.allow_forward_pixel_to_be_killed = true; state->properties.bifrost.zs_update_operation = MALI_PIXEL_KILL_STRONG_EARLY; } else { bool no_blend = true; for (unsigned i = 0; i < rt_count; ++i) no_blend &= (!blend[i].load_dest | blend[i].no_colour); state->properties = fs->properties; state->properties.bifrost.allow_forward_pixel_to_kill = !fs->can_discard && !fs->writes_depth && no_blend; state->shader = fs->shader; state->preload = fs->preload; } } static void panfrost_prepare_midgard_fs_state(struct panfrost_context *ctx, struct panfrost_blend_final *blend, struct MALI_RENDERER_STATE *state) { const struct panfrost_device *dev = pan_device(ctx->base.screen); struct panfrost_shader_state *fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT); const struct panfrost_zsa_state *zsa = ctx->depth_stencil; unsigned rt_count = ctx->pipe_framebuffer.nr_cbufs; bool alpha_to_coverage = ctx->blend->base.alpha_to_coverage; if (!panfrost_fs_required(fs, blend, rt_count)) { state->shader.shader = 0x1; state->properties.midgard.work_register_count = 1; state->properties.depth_source = MALI_DEPTH_SOURCE_FIXED_FUNCTION; state->properties.midgard.force_early_z = true; } else { /* Reasons to disable early-Z from a shader perspective */ bool late_z = fs->can_discard || fs->writes_global || fs->writes_depth || fs->writes_stencil; /* If either depth or stencil is enabled, discard matters */ bool zs_enabled = (zsa->base.depth.enabled && zsa->base.depth.func != PIPE_FUNC_ALWAYS) || zsa->base.stencil[0].enabled; bool has_blend_shader = false; for (unsigned c = 0; c < rt_count; ++c) has_blend_shader |= blend[c].is_shader; /* TODO: Reduce this limit? */ state->properties = fs->properties; if (has_blend_shader) state->properties.midgard.work_register_count = MAX2(fs->work_reg_count, 8); else state->properties.midgard.work_register_count = fs->work_reg_count; state->properties.midgard.force_early_z = !(late_z || alpha_to_coverage); /* Workaround a hardware errata where early-z cannot be enabled * when discarding even when the depth buffer is read-only, by * lying to the hardware about the discard and setting the * reads tilebuffer? flag to compensate */ state->properties.midgard.shader_reads_tilebuffer = fs->outputs_read || (!zs_enabled && fs->can_discard); state->properties.midgard.shader_contains_discard = zs_enabled && fs->can_discard; state->shader = fs->shader; } if (dev->quirks & MIDGARD_SFBD) { state->multisample_misc.sfbd_load_destination = blend[0].load_dest; state->multisample_misc.sfbd_blend_shader = blend[0].is_shader; state->stencil_mask_misc.sfbd_write_enable = !blend[0].no_colour; state->stencil_mask_misc.sfbd_srgb = util_format_is_srgb(ctx->pipe_framebuffer.cbufs[0]->format); state->stencil_mask_misc.sfbd_dither_disable = !ctx->blend->base.dither; if (blend[0].is_shader) { state->sfbd_blend_shader = blend[0].shader.gpu | blend[0].shader.first_tag; } else { state->sfbd_blend_equation = blend[0].equation.equation; state->sfbd_blend_constant = blend[0].equation.constant; } } else { /* Bug where MRT-capable hw apparently reads the last blend * shader from here instead of the usual location? */ for (signed rt = ((signed) rt_count - 1); rt >= 0; --rt) { if (!blend[rt].is_shader) continue; state->sfbd_blend_shader = blend[rt].shader.gpu | blend[rt].shader.first_tag; break; } } } static void panfrost_prepare_fs_state(struct panfrost_context *ctx, struct panfrost_blend_final *blend, struct MALI_RENDERER_STATE *state) { const struct panfrost_device *dev = pan_device(ctx->base.screen); struct panfrost_shader_state *fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT); struct pipe_rasterizer_state *rast = &ctx->rasterizer->base; const struct panfrost_zsa_state *zsa = ctx->depth_stencil; bool alpha_to_coverage = ctx->blend->base.alpha_to_coverage; if (dev->quirks & IS_BIFROST) panfrost_prepare_bifrost_fs_state(ctx, blend, state); else panfrost_prepare_midgard_fs_state(ctx, blend, state); bool msaa = rast->multisample; state->multisample_misc.multisample_enable = msaa; state->multisample_misc.sample_mask = (msaa ? ctx->sample_mask : ~0) & 0xFFFF; /* EXT_shader_framebuffer_fetch requires per-sample */ bool per_sample = ctx->min_samples > 1 || fs->outputs_read; state->multisample_misc.evaluate_per_sample = msaa && per_sample; state->multisample_misc.depth_function = zsa->base.depth.enabled ? panfrost_translate_compare_func(zsa->base.depth.func) : MALI_FUNC_ALWAYS; state->multisample_misc.depth_write_mask = zsa->base.depth.writemask; state->multisample_misc.fixed_function_near_discard = rast->depth_clip_near; state->multisample_misc.fixed_function_far_discard = rast->depth_clip_far; state->multisample_misc.shader_depth_range_fixed = true; state->stencil_mask_misc.stencil_mask_front = zsa->stencil_mask_front; state->stencil_mask_misc.stencil_mask_back = zsa->stencil_mask_back; state->stencil_mask_misc.stencil_enable = zsa->base.stencil[0].enabled; state->stencil_mask_misc.alpha_to_coverage = alpha_to_coverage; state->stencil_mask_misc.alpha_test_compare_function = MALI_FUNC_ALWAYS; state->stencil_mask_misc.depth_range_1 = rast->offset_tri; state->stencil_mask_misc.depth_range_2 = rast->offset_tri; state->stencil_mask_misc.single_sampled_lines = !rast->multisample; state->depth_units = rast->offset_units * 2.0f; state->depth_factor = rast->offset_scale; bool back_enab = zsa->base.stencil[1].enabled; state->stencil_front = zsa->stencil_front; state->stencil_back = zsa->stencil_back; state->stencil_front.reference_value = ctx->stencil_ref.ref_value[0]; state->stencil_back.reference_value = ctx->stencil_ref.ref_value[back_enab ? 1 : 0]; } static void panfrost_emit_frag_shader(struct panfrost_context *ctx, struct mali_renderer_state_packed *fragmeta, struct panfrost_blend_final *blend) { pan_pack(fragmeta, RENDERER_STATE, cfg) { panfrost_prepare_fs_state(ctx, blend, &cfg); } } mali_ptr panfrost_emit_compute_shader_meta(struct panfrost_batch *batch, enum pipe_shader_type stage) { struct panfrost_shader_state *ss = panfrost_get_shader_state(batch->ctx, stage); panfrost_batch_add_bo(batch, ss->bo, PAN_BO_ACCESS_PRIVATE | PAN_BO_ACCESS_READ | PAN_BO_ACCESS_VERTEX_TILER); panfrost_batch_add_bo(batch, pan_resource(ss->upload.rsrc)->bo, PAN_BO_ACCESS_PRIVATE | PAN_BO_ACCESS_READ | PAN_BO_ACCESS_VERTEX_TILER); return pan_resource(ss->upload.rsrc)->bo->ptr.gpu + ss->upload.offset; } mali_ptr panfrost_emit_frag_shader_meta(struct panfrost_batch *batch) { struct panfrost_context *ctx = batch->ctx; struct panfrost_shader_state *ss = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT); /* Add the shader BO to the batch. */ panfrost_batch_add_bo(batch, ss->bo, PAN_BO_ACCESS_PRIVATE | PAN_BO_ACCESS_READ | PAN_BO_ACCESS_FRAGMENT); struct panfrost_device *dev = pan_device(ctx->base.screen); unsigned rt_count = MAX2(ctx->pipe_framebuffer.nr_cbufs, 1); struct panfrost_ptr xfer; unsigned rt_size; if (dev->quirks & MIDGARD_SFBD) rt_size = 0; else rt_size = MALI_BLEND_LENGTH; unsigned desc_size = MALI_RENDERER_STATE_LENGTH + rt_size * rt_count; xfer = panfrost_pool_alloc_aligned(&batch->pool, desc_size, MALI_RENDERER_STATE_LENGTH); struct panfrost_blend_final blend[PIPE_MAX_COLOR_BUFS]; unsigned shader_offset = 0; struct panfrost_bo *shader_bo = NULL; for (unsigned c = 0; c < ctx->pipe_framebuffer.nr_cbufs; ++c) blend[c] = panfrost_get_blend_for_context(ctx, c, &shader_bo, &shader_offset); panfrost_emit_frag_shader(ctx, (struct mali_renderer_state_packed *) xfer.cpu, blend); if (!(dev->quirks & MIDGARD_SFBD)) panfrost_emit_blend(batch, xfer.cpu + MALI_RENDERER_STATE_LENGTH, blend); else batch->draws |= PIPE_CLEAR_COLOR0; return xfer.gpu; } mali_ptr panfrost_emit_viewport(struct panfrost_batch *batch) { struct panfrost_context *ctx = batch->ctx; const struct pipe_viewport_state *vp = &ctx->pipe_viewport; const struct pipe_scissor_state *ss = &ctx->scissor; const struct pipe_rasterizer_state *rast = &ctx->rasterizer->base; const struct pipe_framebuffer_state *fb = &ctx->pipe_framebuffer; /* Derive min/max from translate/scale. Note since |x| >= 0 by * definition, we have that -|x| <= |x| hence translate - |scale| <= * translate + |scale|, so the ordering is correct here. */ float vp_minx = vp->translate[0] - fabsf(vp->scale[0]); float vp_maxx = vp->translate[0] + fabsf(vp->scale[0]); float vp_miny = vp->translate[1] - fabsf(vp->scale[1]); float vp_maxy = vp->translate[1] + fabsf(vp->scale[1]); float minz = (vp->translate[2] - fabsf(vp->scale[2])); float maxz = (vp->translate[2] + fabsf(vp->scale[2])); /* Scissor to the intersection of viewport and to the scissor, clamped * to the framebuffer */ unsigned minx = MIN2(fb->width, MAX2((int) vp_minx, 0)); unsigned maxx = MIN2(fb->width, MAX2((int) vp_maxx, 0)); unsigned miny = MIN2(fb->height, MAX2((int) vp_miny, 0)); unsigned maxy = MIN2(fb->height, MAX2((int) vp_maxy, 0)); if (ss && rast->scissor) { minx = MAX2(ss->minx, minx); miny = MAX2(ss->miny, miny); maxx = MIN2(ss->maxx, maxx); maxy = MIN2(ss->maxy, maxy); } /* Set the range to [1, 1) so max values don't wrap round */ if (maxx == 0 || maxy == 0) maxx = maxy = minx = miny = 1; struct panfrost_ptr T = panfrost_pool_alloc(&batch->pool, MALI_VIEWPORT_LENGTH); pan_pack(T.cpu, VIEWPORT, cfg) { /* [minx, maxx) and [miny, maxy) are exclusive ranges, but * these are inclusive */ cfg.scissor_minimum_x = minx; cfg.scissor_minimum_y = miny; cfg.scissor_maximum_x = maxx - 1; cfg.scissor_maximum_y = maxy - 1; cfg.minimum_z = rast->depth_clip_near ? minz : -INFINITY; cfg.maximum_z = rast->depth_clip_far ? maxz : INFINITY; } panfrost_batch_union_scissor(batch, minx, miny, maxx, maxy); return T.gpu; } static mali_ptr panfrost_map_constant_buffer_gpu(struct panfrost_batch *batch, enum pipe_shader_type st, struct panfrost_constant_buffer *buf, unsigned index) { struct pipe_constant_buffer *cb = &buf->cb[index]; struct panfrost_resource *rsrc = pan_resource(cb->buffer); if (rsrc) { panfrost_batch_add_bo(batch, rsrc->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | panfrost_bo_access_for_stage(st)); /* Alignment gauranteed by * PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT */ return rsrc->bo->ptr.gpu + cb->buffer_offset; } else if (cb->user_buffer) { return panfrost_pool_upload_aligned(&batch->pool, cb->user_buffer + cb->buffer_offset, cb->buffer_size, 16); } else { unreachable("No constant buffer"); } } struct sysval_uniform { union { float f[4]; int32_t i[4]; uint32_t u[4]; uint64_t du[2]; }; }; static void panfrost_upload_viewport_scale_sysval(struct panfrost_batch *batch, struct sysval_uniform *uniform) { struct panfrost_context *ctx = batch->ctx; const struct pipe_viewport_state *vp = &ctx->pipe_viewport; uniform->f[0] = vp->scale[0]; uniform->f[1] = vp->scale[1]; uniform->f[2] = vp->scale[2]; } static void panfrost_upload_viewport_offset_sysval(struct panfrost_batch *batch, struct sysval_uniform *uniform) { struct panfrost_context *ctx = batch->ctx; const struct pipe_viewport_state *vp = &ctx->pipe_viewport; uniform->f[0] = vp->translate[0]; uniform->f[1] = vp->translate[1]; uniform->f[2] = vp->translate[2]; } static void panfrost_upload_txs_sysval(struct panfrost_batch *batch, enum pipe_shader_type st, unsigned int sysvalid, struct sysval_uniform *uniform) { struct panfrost_context *ctx = batch->ctx; unsigned texidx = PAN_SYSVAL_ID_TO_TXS_TEX_IDX(sysvalid); unsigned dim = PAN_SYSVAL_ID_TO_TXS_DIM(sysvalid); bool is_array = PAN_SYSVAL_ID_TO_TXS_IS_ARRAY(sysvalid); struct pipe_sampler_view *tex = &ctx->sampler_views[st][texidx]->base; assert(dim); uniform->i[0] = u_minify(tex->texture->width0, tex->u.tex.first_level); if (dim > 1) uniform->i[1] = u_minify(tex->texture->height0, tex->u.tex.first_level); if (dim > 2) uniform->i[2] = u_minify(tex->texture->depth0, tex->u.tex.first_level); if (is_array) uniform->i[dim] = tex->texture->array_size; } static void panfrost_upload_ssbo_sysval(struct panfrost_batch *batch, enum pipe_shader_type st, unsigned ssbo_id, struct sysval_uniform *uniform) { struct panfrost_context *ctx = batch->ctx; assert(ctx->ssbo_mask[st] & (1 << ssbo_id)); struct pipe_shader_buffer sb = ctx->ssbo[st][ssbo_id]; /* Compute address */ struct panfrost_bo *bo = pan_resource(sb.buffer)->bo; panfrost_batch_add_bo(batch, bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_RW | panfrost_bo_access_for_stage(st)); /* Upload address and size as sysval */ uniform->du[0] = bo->ptr.gpu + sb.buffer_offset; uniform->u[2] = sb.buffer_size; } static void panfrost_upload_sampler_sysval(struct panfrost_batch *batch, enum pipe_shader_type st, unsigned samp_idx, struct sysval_uniform *uniform) { struct panfrost_context *ctx = batch->ctx; struct pipe_sampler_state *sampl = &ctx->samplers[st][samp_idx]->base; uniform->f[0] = sampl->min_lod; uniform->f[1] = sampl->max_lod; uniform->f[2] = sampl->lod_bias; /* Even without any errata, Midgard represents "no mipmapping" as * fixing the LOD with the clamps; keep behaviour consistent. c.f. * panfrost_create_sampler_state which also explains our choice of * epsilon value (again to keep behaviour consistent) */ if (sampl->min_mip_filter == PIPE_TEX_MIPFILTER_NONE) uniform->f[1] = uniform->f[0] + (1.0/256.0); } static void panfrost_upload_num_work_groups_sysval(struct panfrost_batch *batch, struct sysval_uniform *uniform) { struct panfrost_context *ctx = batch->ctx; uniform->u[0] = ctx->compute_grid->grid[0]; uniform->u[1] = ctx->compute_grid->grid[1]; uniform->u[2] = ctx->compute_grid->grid[2]; } static void panfrost_upload_sysvals(struct panfrost_batch *batch, void *buf, struct panfrost_shader_state *ss, enum pipe_shader_type st) { struct sysval_uniform *uniforms = (void *)buf; for (unsigned i = 0; i < ss->sysval_count; ++i) { int sysval = ss->sysval[i]; switch (PAN_SYSVAL_TYPE(sysval)) { case PAN_SYSVAL_VIEWPORT_SCALE: panfrost_upload_viewport_scale_sysval(batch, &uniforms[i]); break; case PAN_SYSVAL_VIEWPORT_OFFSET: panfrost_upload_viewport_offset_sysval(batch, &uniforms[i]); break; case PAN_SYSVAL_TEXTURE_SIZE: panfrost_upload_txs_sysval(batch, st, PAN_SYSVAL_ID(sysval), &uniforms[i]); break; case PAN_SYSVAL_SSBO: panfrost_upload_ssbo_sysval(batch, st, PAN_SYSVAL_ID(sysval), &uniforms[i]); break; case PAN_SYSVAL_NUM_WORK_GROUPS: panfrost_upload_num_work_groups_sysval(batch, &uniforms[i]); break; case PAN_SYSVAL_SAMPLER: panfrost_upload_sampler_sysval(batch, st, PAN_SYSVAL_ID(sysval), &uniforms[i]); break; default: assert(0); } } } static const void * panfrost_map_constant_buffer_cpu(struct panfrost_constant_buffer *buf, unsigned index) { struct pipe_constant_buffer *cb = &buf->cb[index]; struct panfrost_resource *rsrc = pan_resource(cb->buffer); if (rsrc) return rsrc->bo->ptr.cpu; else if (cb->user_buffer) return cb->user_buffer; else unreachable("No constant buffer"); } mali_ptr panfrost_emit_const_buf(struct panfrost_batch *batch, enum pipe_shader_type stage, mali_ptr *push_constants) { struct panfrost_context *ctx = batch->ctx; struct panfrost_shader_variants *all = ctx->shader[stage]; if (!all) return 0; struct panfrost_constant_buffer *buf = &ctx->constant_buffer[stage]; struct panfrost_shader_state *ss = &all->variants[all->active_variant]; /* Uniforms are implicitly UBO #0 */ bool has_uniforms = buf->enabled_mask & (1 << 0); /* Allocate room for the sysval and the uniforms */ size_t sys_size = sizeof(float) * 4 * ss->sysval_count; size_t uniform_size = has_uniforms ? (buf->cb[0].buffer_size) : 0; size_t size = sys_size + uniform_size; struct panfrost_ptr transfer = panfrost_pool_alloc_aligned(&batch->pool, size, 16); /* Upload sysvals requested by the shader */ panfrost_upload_sysvals(batch, transfer.cpu, ss, stage); /* Upload uniforms */ if (has_uniforms && uniform_size) { const void *cpu = panfrost_map_constant_buffer_cpu(buf, 0); memcpy(transfer.cpu + sys_size, cpu, uniform_size); } /* Next up, attach UBOs. UBO #0 is the uniforms we just * uploaded, so it's always included. The count is the highest UBO * addressable -- gaps are included. */ unsigned ubo_count = 32 - __builtin_clz(buf->enabled_mask | 1); size_t sz = MALI_UNIFORM_BUFFER_LENGTH * ubo_count; struct panfrost_ptr ubos = panfrost_pool_alloc_aligned(&batch->pool, sz, MALI_UNIFORM_BUFFER_LENGTH); uint64_t *ubo_ptr = (uint64_t *) ubos.cpu; /* Upload uniforms as a UBO */ if (size) { pan_pack(ubo_ptr, UNIFORM_BUFFER, cfg) { cfg.entries = DIV_ROUND_UP(size, 16); cfg.pointer = transfer.gpu; } } else { *ubo_ptr = 0; } /* The rest are honest-to-goodness UBOs */ for (unsigned ubo = 1; ubo < ubo_count; ++ubo) { size_t usz = buf->cb[ubo].buffer_size; bool enabled = buf->enabled_mask & (1 << ubo); bool empty = usz == 0; if (!enabled || empty) { ubo_ptr[ubo] = 0; continue; } /* Issue (57) for the ARB_uniform_buffer_object spec says that * the buffer can be larger than the uniform data inside it, * so clamp ubo size to what hardware supports. */ pan_pack(ubo_ptr + ubo, UNIFORM_BUFFER, cfg) { cfg.entries = MIN2(DIV_ROUND_UP(usz, 16), 1 << 12); cfg.pointer = panfrost_map_constant_buffer_gpu(batch, stage, buf, ubo); } } if (ss->uniform_count) *push_constants = transfer.gpu; buf->dirty_mask = 0; return ubos.gpu; } mali_ptr panfrost_emit_shared_memory(struct panfrost_batch *batch, const struct pipe_grid_info *info) { struct panfrost_context *ctx = batch->ctx; struct panfrost_device *dev = pan_device(ctx->base.screen); struct panfrost_shader_variants *all = ctx->shader[PIPE_SHADER_COMPUTE]; struct panfrost_shader_state *ss = &all->variants[all->active_variant]; unsigned single_size = util_next_power_of_two(MAX2(ss->shared_size, 128)); unsigned instances = util_next_power_of_two(info->grid[0]) * util_next_power_of_two(info->grid[1]) * util_next_power_of_two(info->grid[2]); unsigned shared_size = single_size * instances * dev->core_count; struct panfrost_bo *bo = panfrost_batch_get_shared_memory(batch, shared_size, 1); struct panfrost_ptr t = panfrost_pool_alloc_aligned(&batch->pool, MALI_LOCAL_STORAGE_LENGTH, 64); pan_pack(t.cpu, LOCAL_STORAGE, ls) { ls.wls_base_pointer = bo->ptr.gpu; ls.wls_instances = instances; ls.wls_size_scale = util_logbase2(single_size) + 1; }; return t.gpu; } static mali_ptr panfrost_get_tex_desc(struct panfrost_batch *batch, enum pipe_shader_type st, struct panfrost_sampler_view *view) { if (!view) return (mali_ptr) 0; struct pipe_sampler_view *pview = &view->base; struct panfrost_resource *rsrc = pan_resource(pview->texture); /* Add the BO to the job so it's retained until the job is done. */ panfrost_batch_add_bo(batch, rsrc->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | panfrost_bo_access_for_stage(st)); panfrost_batch_add_bo(batch, view->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | panfrost_bo_access_for_stage(st)); return view->bo->ptr.gpu; } static void panfrost_update_sampler_view(struct panfrost_sampler_view *view, struct pipe_context *pctx) { struct panfrost_resource *rsrc = pan_resource(view->base.texture); if (view->texture_bo != rsrc->bo->ptr.gpu || view->modifier != rsrc->modifier) { panfrost_bo_unreference(view->bo); panfrost_create_sampler_view_bo(view, pctx, &rsrc->base); } } mali_ptr panfrost_emit_texture_descriptors(struct panfrost_batch *batch, enum pipe_shader_type stage) { struct panfrost_context *ctx = batch->ctx; struct panfrost_device *device = pan_device(ctx->base.screen); if (!ctx->sampler_view_count[stage]) return 0; if (device->quirks & IS_BIFROST) { struct panfrost_ptr T = panfrost_pool_alloc_aligned(&batch->pool, MALI_BIFROST_TEXTURE_LENGTH * ctx->sampler_view_count[stage], MALI_BIFROST_TEXTURE_LENGTH); struct mali_bifrost_texture_packed *out = (struct mali_bifrost_texture_packed *) T.cpu; for (int i = 0; i < ctx->sampler_view_count[stage]; ++i) { struct panfrost_sampler_view *view = ctx->sampler_views[stage][i]; struct pipe_sampler_view *pview = &view->base; struct panfrost_resource *rsrc = pan_resource(pview->texture); panfrost_update_sampler_view(view, &ctx->base); out[i] = view->bifrost_descriptor; /* Add the BOs to the job so they are retained until the job is done. */ panfrost_batch_add_bo(batch, rsrc->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | panfrost_bo_access_for_stage(stage)); panfrost_batch_add_bo(batch, view->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | panfrost_bo_access_for_stage(stage)); } return T.gpu; } else { uint64_t trampolines[PIPE_MAX_SHADER_SAMPLER_VIEWS]; for (int i = 0; i < ctx->sampler_view_count[stage]; ++i) { struct panfrost_sampler_view *view = ctx->sampler_views[stage][i]; panfrost_update_sampler_view(view, &ctx->base); trampolines[i] = panfrost_get_tex_desc(batch, stage, view); } return panfrost_pool_upload_aligned(&batch->pool, trampolines, sizeof(uint64_t) * ctx->sampler_view_count[stage], sizeof(uint64_t)); } } mali_ptr panfrost_emit_sampler_descriptors(struct panfrost_batch *batch, enum pipe_shader_type stage) { struct panfrost_context *ctx = batch->ctx; if (!ctx->sampler_count[stage]) return 0; size_t desc_size = MALI_BIFROST_SAMPLER_LENGTH; assert(MALI_BIFROST_SAMPLER_LENGTH == MALI_MIDGARD_SAMPLER_LENGTH); size_t sz = desc_size * ctx->sampler_count[stage]; struct panfrost_ptr T = panfrost_pool_alloc_aligned(&batch->pool, sz, desc_size); struct mali_midgard_sampler_packed *out = (struct mali_midgard_sampler_packed *) T.cpu; for (unsigned i = 0; i < ctx->sampler_count[stage]; ++i) out[i] = ctx->samplers[stage][i]->hw; return T.gpu; } mali_ptr panfrost_emit_vertex_data(struct panfrost_batch *batch, mali_ptr *buffers) { struct panfrost_context *ctx = batch->ctx; struct panfrost_device *dev = pan_device(ctx->base.screen); bool is_bifrost = !!(dev->quirks & IS_BIFROST); struct panfrost_vertex_state *so = ctx->vertex; struct panfrost_shader_state *vs = panfrost_get_shader_state(ctx, PIPE_SHADER_VERTEX); /* Worst case: everything is NPOT, which is only possible if instancing * is enabled. Otherwise single record is gauranteed */ struct panfrost_ptr S = panfrost_pool_alloc_aligned(&batch->pool, MALI_ATTRIBUTE_BUFFER_LENGTH * (vs->attribute_count + 1) * (ctx->instance_count > 1 ? 2 : 1), MALI_ATTRIBUTE_BUFFER_LENGTH * 2); struct panfrost_ptr T = panfrost_pool_alloc_aligned(&batch->pool, MALI_ATTRIBUTE_LENGTH * vs->attribute_count, MALI_ATTRIBUTE_LENGTH); struct mali_attribute_buffer_packed *bufs = (struct mali_attribute_buffer_packed *) S.cpu; /* Determine (n + 1)'th index to suppress prefetch on Bifrost */ unsigned last = vs->attribute_count * ((ctx->instance_count > 1) ? 2 : 1); memset(bufs + last, 0, sizeof(*bufs)); struct mali_attribute_packed *out = (struct mali_attribute_packed *) T.cpu; unsigned attrib_to_buffer[PIPE_MAX_ATTRIBS] = { 0 }; unsigned k = 0; for (unsigned i = 0; i < so->num_elements; ++i) { /* We map buffers 1:1 with the attributes, which * means duplicating some vertex buffers (who cares? aside from * maybe some caching implications but I somehow doubt that * matters) */ struct pipe_vertex_element *elem = &so->pipe[i]; unsigned vbi = elem->vertex_buffer_index; attrib_to_buffer[i] = k; if (!(ctx->vb_mask & (1 << vbi))) continue; struct pipe_vertex_buffer *buf = &ctx->vertex_buffers[vbi]; struct panfrost_resource *rsrc; rsrc = pan_resource(buf->buffer.resource); if (!rsrc) continue; /* Add a dependency of the batch on the vertex buffer */ panfrost_batch_add_bo(batch, rsrc->bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_READ | PAN_BO_ACCESS_VERTEX_TILER); /* Mask off lower bits, see offset fixup below */ mali_ptr raw_addr = rsrc->bo->ptr.gpu + buf->buffer_offset; mali_ptr addr = raw_addr & ~63; /* Since we advanced the base pointer, we shrink the buffer * size, but add the offset we subtracted */ unsigned size = rsrc->base.width0 + (raw_addr - addr) - buf->buffer_offset; /* When there is a divisor, the hardware-level divisor is * the product of the instance divisor and the padded count */ unsigned divisor = elem->instance_divisor; unsigned hw_divisor = ctx->padded_count * divisor; unsigned stride = buf->stride; /* If there's a divisor(=1) but no instancing, we want every * attribute to be the same */ if (divisor && ctx->instance_count == 1) stride = 0; if (!divisor || ctx->instance_count <= 1) { pan_pack(bufs + k, ATTRIBUTE_BUFFER, cfg) { if (ctx->instance_count > 1) { cfg.type = MALI_ATTRIBUTE_TYPE_1D_MODULUS; cfg.divisor = ctx->padded_count; } cfg.pointer = addr; cfg.stride = stride; cfg.size = size; } } else if (util_is_power_of_two_or_zero(hw_divisor)) { pan_pack(bufs + k, ATTRIBUTE_BUFFER, cfg) { cfg.type = MALI_ATTRIBUTE_TYPE_1D_POT_DIVISOR; cfg.pointer = addr; cfg.stride = stride; cfg.size = size; cfg.divisor_r = __builtin_ctz(hw_divisor); } } else { unsigned shift = 0, extra_flags = 0; unsigned magic_divisor = panfrost_compute_magic_divisor(hw_divisor, &shift, &extra_flags); pan_pack(bufs + k, ATTRIBUTE_BUFFER, cfg) { cfg.type = MALI_ATTRIBUTE_TYPE_1D_NPOT_DIVISOR; cfg.pointer = addr; cfg.stride = stride; cfg.size = size; cfg.divisor_r = shift; cfg.divisor_e = extra_flags; } pan_pack(bufs + k + 1, ATTRIBUTE_BUFFER_CONTINUATION_NPOT, cfg) { cfg.divisor_numerator = magic_divisor; cfg.divisor = divisor; } ++k; } ++k; } /* Add special gl_VertexID/gl_InstanceID buffers */ if (unlikely(vs->attribute_count >= PAN_VERTEX_ID)) { panfrost_vertex_id(ctx->padded_count, &bufs[k], ctx->instance_count > 1); pan_pack(out + PAN_VERTEX_ID, ATTRIBUTE, cfg) { cfg.buffer_index = k++; cfg.format = so->formats[PAN_VERTEX_ID]; } panfrost_instance_id(ctx->padded_count, &bufs[k], ctx->instance_count > 1); pan_pack(out + PAN_INSTANCE_ID, ATTRIBUTE, cfg) { cfg.buffer_index = k++; cfg.format = so->formats[PAN_INSTANCE_ID]; } } /* We need an empty attrib buf to stop the prefetching on Bifrost */ if (is_bifrost) pan_pack(&bufs[k], ATTRIBUTE_BUFFER, cfg); /* Attribute addresses require 64-byte alignment, so let: * * base' = base & ~63 = base - (base & 63) * offset' = offset + (base & 63) * * Since base' + offset' = base + offset, these are equivalent * addressing modes and now base is 64 aligned. */ for (unsigned i = 0; i < so->num_elements; ++i) { unsigned vbi = so->pipe[i].vertex_buffer_index; struct pipe_vertex_buffer *buf = &ctx->vertex_buffers[vbi]; /* Adjust by the masked off bits of the offset. Make sure we * read src_offset from so->hw (which is not GPU visible) * rather than target (which is) due to caching effects */ unsigned src_offset = so->pipe[i].src_offset; /* BOs aligned to 4k so guaranteed aligned to 64 */ src_offset += (buf->buffer_offset & 63); /* Also, somewhat obscurely per-instance data needs to be * offset in response to a delayed start in an indexed draw */ if (so->pipe[i].instance_divisor && ctx->instance_count > 1) src_offset -= buf->stride * ctx->offset_start; pan_pack(out + i, ATTRIBUTE, cfg) { cfg.buffer_index = attrib_to_buffer[i]; cfg.format = so->formats[i]; cfg.offset = src_offset; } } *buffers = S.gpu; return T.gpu; } static mali_ptr panfrost_emit_varyings(struct panfrost_batch *batch, struct mali_attribute_buffer_packed *slot, unsigned stride, unsigned count) { unsigned size = stride * count; mali_ptr ptr = panfrost_pool_alloc_aligned(&batch->invisible_pool, size, 64).gpu; pan_pack(slot, ATTRIBUTE_BUFFER, cfg) { cfg.stride = stride; cfg.size = size; cfg.pointer = ptr; } return ptr; } static unsigned panfrost_streamout_offset(unsigned stride, struct pipe_stream_output_target *target) { return (target->buffer_offset + (pan_so_target(target)->offset * stride * 4)) & 63; } static void panfrost_emit_streamout(struct panfrost_batch *batch, struct mali_attribute_buffer_packed *slot, unsigned stride_words, unsigned count, struct pipe_stream_output_target *target) { unsigned stride = stride_words * 4; unsigned max_size = target->buffer_size; unsigned expected_size = stride * count; /* Grab the BO and bind it to the batch */ struct panfrost_bo *bo = pan_resource(target->buffer)->bo; /* Varyings are WRITE from the perspective of the VERTEX but READ from * the perspective of the TILER and FRAGMENT. */ panfrost_batch_add_bo(batch, bo, PAN_BO_ACCESS_SHARED | PAN_BO_ACCESS_RW | PAN_BO_ACCESS_VERTEX_TILER | PAN_BO_ACCESS_FRAGMENT); /* We will have an offset applied to get alignment */ mali_ptr addr = bo->ptr.gpu + target->buffer_offset + (pan_so_target(target)->offset * stride); pan_pack(slot, ATTRIBUTE_BUFFER, cfg) { cfg.pointer = (addr & ~63); cfg.stride = stride; cfg.size = MIN2(max_size, expected_size) + (addr & 63); } } /* Helpers for manipulating stream out information so we can pack varyings * accordingly. Compute the src_offset for a given captured varying */ static struct pipe_stream_output * pan_get_so(struct pipe_stream_output_info *info, gl_varying_slot loc) { for (unsigned i = 0; i < info->num_outputs; ++i) { if (info->output[i].register_index == loc) return &info->output[i]; } unreachable("Varying not captured"); } static unsigned pan_varying_size(enum mali_format fmt) { unsigned type = MALI_EXTRACT_TYPE(fmt); unsigned chan = MALI_EXTRACT_CHANNELS(fmt); unsigned bits = MALI_EXTRACT_BITS(fmt); unsigned bpc = 0; if (bits == MALI_CHANNEL_FLOAT) { /* No doubles */ bool fp16 = (type == MALI_FORMAT_SINT); assert(fp16 || (type == MALI_FORMAT_UNORM)); bpc = fp16 ? 2 : 4; } else { assert(type >= MALI_FORMAT_SNORM && type <= MALI_FORMAT_SINT); /* See the enums */ bits = 1 << bits; assert(bits >= 8); bpc = bits / 8; } return bpc * chan; } /* Indices for named (non-XFB) varyings that are present. These are packed * tightly so they correspond to a bitfield present (P) indexed by (1 << * PAN_VARY_*). This has the nice property that you can lookup the buffer index * of a given special field given a shift S by: * * idx = popcount(P & ((1 << S) - 1)) * * That is... look at all of the varyings that come earlier and count them, the * count is the new index since plus one. Likewise, the total number of special * buffers required is simply popcount(P) */ enum pan_special_varying { PAN_VARY_GENERAL = 0, PAN_VARY_POSITION = 1, PAN_VARY_PSIZ = 2, PAN_VARY_PNTCOORD = 3, PAN_VARY_FACE = 4, PAN_VARY_FRAGCOORD = 5, /* Keep last */ PAN_VARY_MAX, }; /* Given a varying, figure out which index it correpsonds to */ static inline unsigned pan_varying_index(unsigned present, enum pan_special_varying v) { unsigned mask = (1 << v) - 1; return util_bitcount(present & mask); } /* Get the base offset for XFB buffers, which by convention come after * everything else. Wrapper function for semantic reasons; by construction this * is just popcount. */ static inline unsigned pan_xfb_base(unsigned present) { return util_bitcount(present); } /* Computes the present mask for varyings so we can start emitting varying records */ static inline unsigned pan_varying_present( struct panfrost_shader_state *vs, struct panfrost_shader_state *fs, unsigned quirks, uint16_t point_coord_mask) { /* At the moment we always emit general and position buffers. Not * strictly necessary but usually harmless */ unsigned present = (1 << PAN_VARY_GENERAL) | (1 << PAN_VARY_POSITION); /* Enable special buffers by the shader info */ if (vs->writes_point_size) present |= (1 << PAN_VARY_PSIZ); if (fs->reads_point_coord) present |= (1 << PAN_VARY_PNTCOORD); if (fs->reads_face) present |= (1 << PAN_VARY_FACE); if (fs->reads_frag_coord && !(quirks & IS_BIFROST)) present |= (1 << PAN_VARY_FRAGCOORD); /* Also, if we have a point sprite, we need a point coord buffer */ for (unsigned i = 0; i < fs->varying_count; i++) { gl_varying_slot loc = fs->varyings_loc[i]; if (util_varying_is_point_coord(loc, point_coord_mask)) present |= (1 << PAN_VARY_PNTCOORD); } return present; } /* Emitters for varying records */ static void pan_emit_vary(struct mali_attribute_packed *out, unsigned present, enum pan_special_varying buf, unsigned quirks, enum mali_format format, unsigned offset) { unsigned nr_channels = MALI_EXTRACT_CHANNELS(format); unsigned swizzle = quirks & HAS_SWIZZLES ? panfrost_get_default_swizzle(nr_channels) : panfrost_bifrost_swizzle(nr_channels); pan_pack(out, ATTRIBUTE, cfg) { cfg.buffer_index = pan_varying_index(present, buf); cfg.offset_enable = quirks & IS_BIFROST ? false : true; cfg.format = (format << 12) | swizzle; cfg.offset = offset; } } /* General varying that is unused */ static void pan_emit_vary_only(struct mali_attribute_packed *out, unsigned present, unsigned quirks) { pan_emit_vary(out, present, 0, quirks, MALI_CONSTANT, 0); } /* Special records */ static const enum mali_format pan_varying_formats[PAN_VARY_MAX] = { [PAN_VARY_POSITION] = MALI_SNAP_4, [PAN_VARY_PSIZ] = MALI_R16F, [PAN_VARY_PNTCOORD] = MALI_R16F, [PAN_VARY_FACE] = MALI_R32I, [PAN_VARY_FRAGCOORD] = MALI_RGBA32F }; static void pan_emit_vary_special(struct mali_attribute_packed *out, unsigned present, enum pan_special_varying buf, unsigned quirks) { assert(buf < PAN_VARY_MAX); pan_emit_vary(out, present, buf, quirks, pan_varying_formats[buf], 0); } static enum mali_format pan_xfb_format(enum mali_format format, unsigned nr) { if (MALI_EXTRACT_BITS(format) == MALI_CHANNEL_FLOAT) return MALI_R32F | MALI_NR_CHANNELS(nr); else return MALI_EXTRACT_TYPE(format) | MALI_NR_CHANNELS(nr) | MALI_CHANNEL_32; } /* Transform feedback records. Note struct pipe_stream_output is (if packed as * a bitfield) 32-bit, smaller than a 64-bit pointer, so may as well pass by * value. */ static void pan_emit_vary_xfb(struct mali_attribute_packed *out, unsigned present, unsigned max_xfb, unsigned *streamout_offsets, unsigned quirks, enum mali_format format, struct pipe_stream_output o) { unsigned swizzle = quirks & HAS_SWIZZLES ? panfrost_get_default_swizzle(o.num_components) : panfrost_bifrost_swizzle(o.num_components); pan_pack(out, ATTRIBUTE, cfg) { /* XFB buffers come after everything else */ cfg.buffer_index = pan_xfb_base(present) + o.output_buffer; cfg.offset_enable = quirks & IS_BIFROST ? false : true; /* Override number of channels and precision to highp */ cfg.format = (pan_xfb_format(format, o.num_components) << 12) | swizzle; /* Apply given offsets together */ cfg.offset = (o.dst_offset * 4) /* dwords */ + streamout_offsets[o.output_buffer]; } } /* Determine if we should capture a varying for XFB. This requires actually * having a buffer for it. If we don't capture it, we'll fallback to a general * varying path (linked or unlinked, possibly discarding the write) */ static bool panfrost_xfb_captured(struct panfrost_shader_state *xfb, unsigned loc, unsigned max_xfb) { if (!(xfb->so_mask & (1ll << loc))) return false; struct pipe_stream_output *o = pan_get_so(&xfb->stream_output, loc); return o->output_buffer < max_xfb; } static void pan_emit_general_varying(struct mali_attribute_packed *out, struct panfrost_shader_state *other, struct panfrost_shader_state *xfb, gl_varying_slot loc, enum mali_format format, unsigned present, unsigned quirks, unsigned *gen_offsets, enum mali_format *gen_formats, unsigned *gen_stride, unsigned idx, bool should_alloc) { /* Check if we're linked */ signed other_idx = -1; for (unsigned j = 0; j < other->varying_count; ++j) { if (other->varyings_loc[j] == loc) { other_idx = j; break; } } if (other_idx < 0) { pan_emit_vary_only(out, present, quirks); return; } unsigned offset = gen_offsets[other_idx]; if (should_alloc) { /* We're linked, so allocate a space via a watermark allocation */ enum mali_format alt = other->varyings[other_idx]; /* Do interpolation at minimum precision */ unsigned size_main = pan_varying_size(format); unsigned size_alt = pan_varying_size(alt); unsigned size = MIN2(size_main, size_alt); /* If a varying is marked for XFB but not actually captured, we * should match the format to the format that would otherwise * be used for XFB, since dEQP checks for invariance here. It's * unclear if this is required by the spec. */ if (xfb->so_mask & (1ull << loc)) { struct pipe_stream_output *o = pan_get_so(&xfb->stream_output, loc); format = pan_xfb_format(format, o->num_components); size = pan_varying_size(format); } else if (size == size_alt) { format = alt; } gen_offsets[idx] = *gen_stride; gen_formats[other_idx] = format; offset = *gen_stride; *gen_stride += size; } pan_emit_vary(out, present, PAN_VARY_GENERAL, quirks, format, offset); } /* Higher-level wrapper around all of the above, classifying a varying into one * of the above types */ static void panfrost_emit_varying( struct mali_attribute_packed *out, struct panfrost_shader_state *stage, struct panfrost_shader_state *other, struct panfrost_shader_state *xfb, unsigned present, uint16_t point_sprite_mask, unsigned max_xfb, unsigned *streamout_offsets, unsigned quirks, unsigned *gen_offsets, enum mali_format *gen_formats, unsigned *gen_stride, unsigned idx, bool should_alloc, bool is_fragment) { gl_varying_slot loc = stage->varyings_loc[idx]; enum mali_format format = stage->varyings[idx]; /* Override format to match linkage */ if (!should_alloc && gen_formats[idx]) format = gen_formats[idx]; if (util_varying_is_point_coord(loc, point_sprite_mask)) { pan_emit_vary_special(out, present, PAN_VARY_PNTCOORD, quirks); } else if (panfrost_xfb_captured(xfb, loc, max_xfb)) { struct pipe_stream_output *o = pan_get_so(&xfb->stream_output, loc); pan_emit_vary_xfb(out, present, max_xfb, streamout_offsets, quirks, format, *o); } else if (loc == VARYING_SLOT_POS) { if (is_fragment) pan_emit_vary_special(out, present, PAN_VARY_FRAGCOORD, quirks); else pan_emit_vary_special(out, present, PAN_VARY_POSITION, quirks); } else if (loc == VARYING_SLOT_PSIZ) { pan_emit_vary_special(out, present, PAN_VARY_PSIZ, quirks); } else if (loc == VARYING_SLOT_PNTC) { pan_emit_vary_special(out, present, PAN_VARY_PNTCOORD, quirks); } else if (loc == VARYING_SLOT_FACE) { pan_emit_vary_special(out, present, PAN_VARY_FACE, quirks); } else { pan_emit_general_varying(out, other, xfb, loc, format, present, quirks, gen_offsets, gen_formats, gen_stride, idx, should_alloc); } } static void pan_emit_special_input(struct mali_attribute_buffer_packed *out, unsigned present, enum pan_special_varying v, unsigned special) { if (present & (1 << v)) { unsigned idx = pan_varying_index(present, v); pan_pack(out + idx, ATTRIBUTE_BUFFER, cfg) { cfg.special = special; cfg.type = 0; } } } void panfrost_emit_varying_descriptor(struct panfrost_batch *batch, unsigned vertex_count, mali_ptr *vs_attribs, mali_ptr *fs_attribs, mali_ptr *buffers, mali_ptr *position, mali_ptr *psiz) { /* Load the shaders */ struct panfrost_context *ctx = batch->ctx; struct panfrost_device *dev = pan_device(ctx->base.screen); struct panfrost_shader_state *vs, *fs; size_t vs_size, fs_size; /* Allocate the varying descriptor */ vs = panfrost_get_shader_state(ctx, PIPE_SHADER_VERTEX); fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT); vs_size = MALI_ATTRIBUTE_LENGTH * vs->varying_count; fs_size = MALI_ATTRIBUTE_LENGTH * fs->varying_count; struct panfrost_ptr trans = panfrost_pool_alloc_aligned( &batch->pool, vs_size + fs_size, MALI_ATTRIBUTE_LENGTH); struct pipe_stream_output_info *so = &vs->stream_output; uint16_t point_coord_mask = ctx->rasterizer->base.sprite_coord_enable; /* TODO: point sprites need lowering on Bifrost */ if (dev->quirks & IS_BIFROST) point_coord_mask = 0; unsigned present = pan_varying_present(vs, fs, dev->quirks, point_coord_mask); /* Check if this varying is linked by us. This is the case for * general-purpose, non-captured varyings. If it is, link it. If it's * not, use the provided stream out information to determine the * offset, since it was already linked for us. */ unsigned gen_offsets[32]; enum mali_format gen_formats[32]; memset(gen_offsets, 0, sizeof(gen_offsets)); memset(gen_formats, 0, sizeof(gen_formats)); unsigned gen_stride = 0; assert(vs->varying_count < ARRAY_SIZE(gen_offsets)); assert(fs->varying_count < ARRAY_SIZE(gen_offsets)); unsigned streamout_offsets[32]; for (unsigned i = 0; i < ctx->streamout.num_targets; ++i) { streamout_offsets[i] = panfrost_streamout_offset( so->stride[i], ctx->streamout.targets[i]); } struct mali_attribute_packed *ovs = (struct mali_attribute_packed *)trans.cpu; struct mali_attribute_packed *ofs = ovs + vs->varying_count; for (unsigned i = 0; i < vs->varying_count; i++) { panfrost_emit_varying(ovs + i, vs, fs, vs, present, 0, ctx->streamout.num_targets, streamout_offsets, dev->quirks, gen_offsets, gen_formats, &gen_stride, i, true, false); } for (unsigned i = 0; i < fs->varying_count; i++) { panfrost_emit_varying(ofs + i, fs, vs, vs, present, point_coord_mask, ctx->streamout.num_targets, streamout_offsets, dev->quirks, gen_offsets, gen_formats, &gen_stride, i, false, true); } unsigned xfb_base = pan_xfb_base(present); struct panfrost_ptr T = panfrost_pool_alloc_aligned(&batch->pool, MALI_ATTRIBUTE_BUFFER_LENGTH * (xfb_base + ctx->streamout.num_targets + 1), MALI_ATTRIBUTE_BUFFER_LENGTH * 2); struct mali_attribute_buffer_packed *varyings = (struct mali_attribute_buffer_packed *) T.cpu; /* Suppress prefetch on Bifrost */ memset(varyings + (xfb_base * ctx->streamout.num_targets), 0, sizeof(*varyings)); /* Emit the stream out buffers */ unsigned out_count = u_stream_outputs_for_vertices(ctx->active_prim, ctx->vertex_count); for (unsigned i = 0; i < ctx->streamout.num_targets; ++i) { panfrost_emit_streamout(batch, &varyings[xfb_base + i], so->stride[i], out_count, ctx->streamout.targets[i]); } panfrost_emit_varyings(batch, &varyings[pan_varying_index(present, PAN_VARY_GENERAL)], gen_stride, vertex_count); /* fp32 vec4 gl_Position */ *position = panfrost_emit_varyings(batch, &varyings[pan_varying_index(present, PAN_VARY_POSITION)], sizeof(float) * 4, vertex_count); if (present & (1 << PAN_VARY_PSIZ)) { *psiz = panfrost_emit_varyings(batch, &varyings[pan_varying_index(present, PAN_VARY_PSIZ)], 2, vertex_count); } pan_emit_special_input(varyings, present, PAN_VARY_PNTCOORD, MALI_ATTRIBUTE_SPECIAL_POINT_COORD); pan_emit_special_input(varyings, present, PAN_VARY_FACE, MALI_ATTRIBUTE_SPECIAL_FRONT_FACING); pan_emit_special_input(varyings, present, PAN_VARY_FRAGCOORD, MALI_ATTRIBUTE_SPECIAL_FRAG_COORD); *buffers = T.gpu; *vs_attribs = trans.gpu; *fs_attribs = trans.gpu + vs_size; } void panfrost_emit_vertex_tiler_jobs(struct panfrost_batch *batch, const struct panfrost_ptr *vertex_job, const struct panfrost_ptr *tiler_job) { struct panfrost_context *ctx = batch->ctx; /* If rasterizer discard is enable, only submit the vertex */ unsigned vertex = panfrost_add_job(&batch->pool, &batch->scoreboard, MALI_JOB_TYPE_VERTEX, false, 0, vertex_job, false); if (ctx->rasterizer->base.rasterizer_discard) return; panfrost_add_job(&batch->pool, &batch->scoreboard, MALI_JOB_TYPE_TILER, false, vertex, tiler_job, false); } /* TODO: stop hardcoding this */ mali_ptr panfrost_emit_sample_locations(struct panfrost_batch *batch) { uint16_t locations[] = { 128, 128, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 0, 256, 128, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; return panfrost_pool_upload_aligned(&batch->pool, locations, 96 * sizeof(uint16_t), 64); }