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third_party_mesa3d/src/gallium/drivers/panfrost/pan_cmdstream.c
Alyssa Rosenzweig e646c861fc panfrost: Use packs for vertex attribute buffers 
Eliminates messy staging, I think.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6326>
2020-08-17 11:43:52 +00:00

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/*
* 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 "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;
}
static void
panfrost_vt_emit_shared_memory(struct panfrost_context *ctx,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_device *dev = pan_device(ctx->base.screen);
struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx);
unsigned shift = panfrost_get_stack_shift(batch->stack_size);
struct mali_shared_memory shared = {
.stack_shift = shift,
.scratchpad = panfrost_batch_get_scratchpad(batch, shift, dev->thread_tls_alloc, dev->core_count)->gpu,
.shared_workgroup_count = ~0,
};
postfix->shared_memory = panfrost_pool_upload(&batch->pool, &shared, sizeof(shared));
}
static void
panfrost_vt_attach_framebuffer(struct panfrost_context *ctx,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx);
postfix->shared_memory = panfrost_batch_reserve_framebuffer(batch);
}
static void
panfrost_vt_update_rasterizer(struct panfrost_context *ctx,
struct mali_vertex_tiler_prefix *prefix,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_rasterizer *rasterizer = ctx->rasterizer;
postfix->gl_enables |= 0x7;
SET_BIT(postfix->gl_enables, MALI_FRONT_CCW_TOP,
rasterizer && rasterizer->base.front_ccw);
SET_BIT(postfix->gl_enables, MALI_CULL_FACE_FRONT,
rasterizer && (rasterizer->base.cull_face & PIPE_FACE_FRONT));
SET_BIT(postfix->gl_enables, MALI_CULL_FACE_BACK,
rasterizer && (rasterizer->base.cull_face & PIPE_FACE_BACK));
SET_BIT(prefix->unknown_draw, MALI_DRAW_FLATSHADE_FIRST,
rasterizer && rasterizer->base.flatshade_first);
}
void
panfrost_vt_update_primitive_size(struct panfrost_context *ctx,
struct mali_vertex_tiler_prefix *prefix,
union midgard_primitive_size *primitive_size)
{
struct panfrost_rasterizer *rasterizer = ctx->rasterizer;
if (!panfrost_writes_point_size(ctx)) {
bool points = prefix->draw_mode == MALI_DRAW_MODE_POINTS;
float val = 0.0f;
if (rasterizer)
val = points ?
rasterizer->base.point_size :
rasterizer->base.line_width;
primitive_size->constant = val;
}
}
static void
panfrost_vt_update_occlusion_query(struct panfrost_context *ctx,
struct mali_vertex_tiler_postfix *postfix)
{
SET_BIT(postfix->gl_enables, MALI_OCCLUSION_QUERY, ctx->occlusion_query);
if (ctx->occlusion_query) {
postfix->occlusion_counter = ctx->occlusion_query->bo->gpu;
panfrost_batch_add_bo(ctx->batch, ctx->occlusion_query->bo,
PAN_BO_ACCESS_SHARED |
PAN_BO_ACCESS_RW |
PAN_BO_ACCESS_FRAGMENT);
} else {
postfix->occlusion_counter = 0;
}
}
void
panfrost_vt_init(struct panfrost_context *ctx,
enum pipe_shader_type stage,
struct mali_vertex_tiler_prefix *prefix,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_device *device = pan_device(ctx->base.screen);
if (!ctx->shader[stage])
return;
memset(prefix, 0, sizeof(*prefix));
memset(postfix, 0, sizeof(*postfix));
if (device->quirks & IS_BIFROST) {
postfix->gl_enables = 0x2;
panfrost_vt_emit_shared_memory(ctx, postfix);
} else {
postfix->gl_enables = 0x6;
panfrost_vt_attach_framebuffer(ctx, postfix);
}
if (stage == PIPE_SHADER_FRAGMENT) {
panfrost_vt_update_occlusion_query(ctx, postfix);
panfrost_vt_update_rasterizer(ctx, prefix, postfix);
}
}
static unsigned
panfrost_translate_index_size(unsigned size)
{
switch (size) {
case 1:
return MALI_DRAW_INDEXED_UINT8;
case 2:
return MALI_DRAW_INDEXED_UINT16;
case 4:
return MALI_DRAW_INDEXED_UINT32;
default:
unreachable("Invalid index size");
}
}
/* 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. */
static 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->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;
out = panfrost_pool_upload(&batch->pool, ibuf8 + offset,
info->count *
info->index_size);
}
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;
}
void
panfrost_vt_set_draw_info(struct panfrost_context *ctx,
const struct pipe_draw_info *info,
enum mali_draw_mode draw_mode,
struct mali_vertex_tiler_postfix *vertex_postfix,
struct mali_vertex_tiler_prefix *tiler_prefix,
struct mali_vertex_tiler_postfix *tiler_postfix,
unsigned *vertex_count,
unsigned *padded_count)
{
tiler_prefix->draw_mode = draw_mode;
unsigned draw_flags = 0;
if (panfrost_writes_point_size(ctx))
draw_flags |= MALI_DRAW_VARYING_SIZE;
if (info->primitive_restart)
draw_flags |= MALI_DRAW_PRIMITIVE_RESTART_FIXED_INDEX;
/* These doesn't make much sense */
draw_flags |= 0x3000;
if (info->index_size) {
unsigned min_index = 0, max_index = 0;
tiler_prefix->indices = panfrost_get_index_buffer_bounded(ctx,
info,
&min_index,
&max_index);
/* Use the corresponding values */
*vertex_count = max_index - min_index + 1;
tiler_postfix->offset_start = vertex_postfix->offset_start = min_index + info->index_bias;
tiler_prefix->offset_bias_correction = -min_index;
tiler_prefix->index_count = MALI_POSITIVE(info->count);
draw_flags |= panfrost_translate_index_size(info->index_size);
} else {
tiler_prefix->indices = 0;
*vertex_count = ctx->vertex_count;
tiler_postfix->offset_start = vertex_postfix->offset_start = info->start;
tiler_prefix->offset_bias_correction = 0;
tiler_prefix->index_count = MALI_POSITIVE(ctx->vertex_count);
}
tiler_prefix->unknown_draw = draw_flags;
/* Encode the padded vertex count */
if (info->instance_count > 1) {
*padded_count = panfrost_padded_vertex_count(*vertex_count);
unsigned shift = __builtin_ctz(ctx->padded_count);
unsigned k = ctx->padded_count >> (shift + 1);
tiler_postfix->instance_shift = vertex_postfix->instance_shift = shift;
tiler_postfix->instance_odd = vertex_postfix->instance_odd = k;
} else {
*padded_count = *vertex_count;
/* Reset instancing state */
tiler_postfix->instance_shift = vertex_postfix->instance_shift = 0;
tiler_postfix->instance_odd = vertex_postfix->instance_odd = 0;
}
}
static void
panfrost_shader_meta_init(struct panfrost_context *ctx,
enum pipe_shader_type st,
struct mali_shader_meta *meta)
{
const struct panfrost_device *dev = pan_device(ctx->base.screen);
struct panfrost_shader_state *ss = panfrost_get_shader_state(ctx, st);
memset(meta, 0, sizeof(*meta));
meta->shader = (ss->bo ? ss->bo->gpu : 0) | ss->first_tag;
meta->attribute_count = ss->attribute_count;
meta->varying_count = ss->varying_count;
meta->texture_count = ctx->sampler_view_count[st];
meta->sampler_count = ctx->sampler_count[st];
if (dev->quirks & IS_BIFROST) {
if (st == PIPE_SHADER_VERTEX)
meta->bifrost1.unk1 = 0x800000;
else {
/* First clause ATEST |= 0x4000000.
* Less than 32 regs |= 0x200 */
meta->bifrost1.unk1 = 0x950020;
}
meta->bifrost1.uniform_buffer_count = panfrost_ubo_count(ctx, st);
if (st == PIPE_SHADER_VERTEX)
meta->bifrost2.preload_regs = 0xC0;
else {
meta->bifrost2.preload_regs = 0x1;
SET_BIT(meta->bifrost2.preload_regs, 0x10, ss->reads_frag_coord);
}
meta->bifrost2.uniform_count = MIN2(ss->uniform_count,
ss->uniform_cutoff);
} else {
meta->midgard1.uniform_count = MIN2(ss->uniform_count,
ss->uniform_cutoff);
meta->midgard1.work_count = ss->work_reg_count;
/* TODO: This is not conformant on ES3 */
meta->midgard1.flags_hi = MALI_SUPPRESS_INF_NAN;
meta->midgard1.flags_lo = 0x20;
meta->midgard1.uniform_buffer_count = panfrost_ubo_count(ctx, st);
SET_BIT(meta->midgard1.flags_hi, MALI_WRITES_GLOBAL, ss->writes_global);
}
}
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.magnify_linear = cso->mag_img_filter == PIPE_TEX_FILTER_LINEAR;
cfg.minify_linear = cso->min_img_filter == PIPE_TEX_FILTER_LINEAR;
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 void
panfrost_frag_meta_rasterizer_update(struct panfrost_context *ctx,
struct mali_shader_meta *fragmeta)
{
if (!ctx->rasterizer) {
SET_BIT(fragmeta->unknown2_4, MALI_NO_MSAA, true);
SET_BIT(fragmeta->unknown2_3, MALI_HAS_MSAA, false);
fragmeta->depth_units = 0.0f;
fragmeta->depth_factor = 0.0f;
SET_BIT(fragmeta->unknown2_4, MALI_DEPTH_RANGE_A, false);
SET_BIT(fragmeta->unknown2_4, MALI_DEPTH_RANGE_B, false);
SET_BIT(fragmeta->unknown2_3, MALI_DEPTH_CLIP_NEAR, true);
SET_BIT(fragmeta->unknown2_3, MALI_DEPTH_CLIP_FAR, true);
return;
}
struct pipe_rasterizer_state *rast = &ctx->rasterizer->base;
bool msaa = rast->multisample;
/* TODO: Sample size */
SET_BIT(fragmeta->unknown2_3, MALI_HAS_MSAA, msaa);
SET_BIT(fragmeta->unknown2_4, MALI_NO_MSAA, !msaa);
struct panfrost_shader_state *fs;
fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT);
/* EXT_shader_framebuffer_fetch requires the shader to be run
* per-sample when outputs are read. */
bool per_sample = ctx->min_samples > 1 || fs->outputs_read;
SET_BIT(fragmeta->unknown2_3, MALI_PER_SAMPLE, msaa && per_sample);
fragmeta->depth_units = rast->offset_units * 2.0f;
fragmeta->depth_factor = rast->offset_scale;
/* XXX: Which bit is which? Does this maybe allow offseting not-tri? */
SET_BIT(fragmeta->unknown2_4, MALI_DEPTH_RANGE_A, rast->offset_tri);
SET_BIT(fragmeta->unknown2_4, MALI_DEPTH_RANGE_B, rast->offset_tri);
SET_BIT(fragmeta->unknown2_3, MALI_DEPTH_CLIP_NEAR, rast->depth_clip_near);
SET_BIT(fragmeta->unknown2_3, MALI_DEPTH_CLIP_FAR, rast->depth_clip_far);
}
static void
panfrost_frag_meta_zsa_update(struct panfrost_context *ctx,
struct mali_shader_meta *fragmeta)
{
const struct panfrost_zsa_state *so = ctx->depth_stencil;
int zfunc = PIPE_FUNC_ALWAYS;
if (!so) {
/* If stenciling is disabled, the state is irrelevant */
SET_BIT(fragmeta->unknown2_4, MALI_STENCIL_TEST, false);
SET_BIT(fragmeta->unknown2_3, MALI_DEPTH_WRITEMASK, false);
} else {
SET_BIT(fragmeta->unknown2_4, MALI_STENCIL_TEST,
so->base.stencil[0].enabled);
fragmeta->stencil_mask_front = so->stencil_mask_front;
fragmeta->stencil_mask_back = so->stencil_mask_back;
/* Bottom bits for stencil ref, exactly one word */
fragmeta->stencil_front.opaque[0] = so->stencil_front.opaque[0] | ctx->stencil_ref.ref_value[0];
/* If back-stencil is not enabled, use the front values */
if (so->base.stencil[1].enabled)
fragmeta->stencil_back.opaque[0] = so->stencil_back.opaque[0] | ctx->stencil_ref.ref_value[1];
else
fragmeta->stencil_back = fragmeta->stencil_front;
if (so->base.depth.enabled)
zfunc = so->base.depth.func;
/* Depth state (TODO: Refactor) */
SET_BIT(fragmeta->unknown2_3, MALI_DEPTH_WRITEMASK,
so->base.depth.writemask);
}
fragmeta->unknown2_3 &= ~MALI_DEPTH_FUNC_MASK;
fragmeta->unknown2_3 |= MALI_DEPTH_FUNC(panfrost_translate_compare_func(zfunc));
}
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_frag_meta_blend_update(struct panfrost_context *ctx,
struct mali_shader_meta *fragmeta,
void *rts)
{
struct panfrost_batch *batch = panfrost_get_batch_for_fbo(ctx);
const struct panfrost_device *dev = pan_device(ctx->base.screen);
struct panfrost_shader_state *fs;
fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT);
SET_BIT(fragmeta->unknown2_4, MALI_NO_DITHER,
(dev->quirks & MIDGARD_SFBD) && ctx->blend &&
!ctx->blend->base.dither);
SET_BIT(fragmeta->unknown2_4, MALI_ALPHA_TO_COVERAGE,
ctx->blend->base.alpha_to_coverage);
/* Get blending setup */
unsigned rt_count = MAX2(ctx->pipe_framebuffer.nr_cbufs, 1);
struct panfrost_blend_final blend[PIPE_MAX_COLOR_BUFS];
unsigned shader_offset = 0;
struct panfrost_bo *shader_bo = NULL;
for (unsigned c = 0; c < rt_count; ++c)
blend[c] = panfrost_get_blend_for_context(ctx, c, &shader_bo,
&shader_offset);
/* Disable shader execution if we can */
if (dev->quirks & MIDGARD_SHADERLESS
&& !panfrost_fs_required(fs, blend, rt_count)) {
fragmeta->shader = 0;
fragmeta->attribute_count = 0;
fragmeta->varying_count = 0;
fragmeta->texture_count = 0;
fragmeta->sampler_count = 0;
/* This feature is not known to work on Bifrost */
fragmeta->midgard1.work_count = 1;
fragmeta->midgard1.uniform_count = 0;
fragmeta->midgard1.uniform_buffer_count = 0;
}
/* If there is a blend shader, work registers are shared. We impose 8
* work registers as a limit for blend shaders. Should be lower XXX */
if (!(dev->quirks & IS_BIFROST)) {
for (unsigned c = 0; c < rt_count; ++c) {
if (blend[c].is_shader) {
fragmeta->midgard1.work_count =
MAX2(fragmeta->midgard1.work_count, 8);
}
}
}
/* Even on MFBD, the shader descriptor gets blend shaders. It's *also*
* copied to the blend_meta appended (by convention), but this is the
* field actually read by the hardware. (Or maybe both are read...?).
* Specify the last RTi with a blend shader. */
fragmeta->blend.shader = 0;
for (signed rt = (rt_count - 1); rt >= 0; --rt) {
if (!blend[rt].is_shader)
continue;
fragmeta->blend.shader = blend[rt].shader.gpu |
blend[rt].shader.first_tag;
break;
}
if (dev->quirks & MIDGARD_SFBD) {
/* When only a single render target platform is used, the blend
* information is inside the shader meta itself. We additionally
* need to signal CAN_DISCARD for nontrivial blend modes (so
* we're able to read back the destination buffer) */
SET_BIT(fragmeta->unknown2_3, MALI_HAS_BLEND_SHADER,
blend[0].is_shader);
if (!blend[0].is_shader) {
fragmeta->blend.equation = *blend[0].equation.equation;
fragmeta->blend.constant = blend[0].equation.constant;
}
SET_BIT(fragmeta->unknown2_3, MALI_CAN_DISCARD,
!blend[0].no_blending || fs->can_discard);
batch->draws |= PIPE_CLEAR_COLOR0;
return;
}
if (dev->quirks & IS_BIFROST) {
bool no_blend = true;
for (unsigned i = 0; i < rt_count; ++i)
no_blend &= (blend[i].no_blending | blend[i].no_colour);
SET_BIT(fragmeta->bifrost1.unk1, MALI_BIFROST_EARLY_Z,
!fs->can_discard && !fs->writes_depth && no_blend);
}
/* Additional blend descriptor tacked on for jobs using MFBD */
for (unsigned i = 0; i < rt_count; ++i) {
unsigned flags = 0;
if (ctx->pipe_framebuffer.nr_cbufs > i && !blend[i].no_colour) {
flags = 0x200;
batch->draws |= (PIPE_CLEAR_COLOR0 << i);
bool is_srgb = (ctx->pipe_framebuffer.nr_cbufs > i) &&
(ctx->pipe_framebuffer.cbufs[i]) &&
util_format_is_srgb(ctx->pipe_framebuffer.cbufs[i]->format);
SET_BIT(flags, MALI_BLEND_MRT_SHADER, blend[i].is_shader);
SET_BIT(flags, MALI_BLEND_LOAD_TIB, !blend[i].no_blending);
SET_BIT(flags, MALI_BLEND_SRGB, is_srgb);
SET_BIT(flags, MALI_BLEND_NO_DITHER, !ctx->blend->base.dither);
}
if (dev->quirks & IS_BIFROST) {
struct bifrost_blend_rt *brts = rts;
brts[i].flags = flags;
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->gpu & (0xffffffffull << 32)));
brts[i].shader = blend[i].shader.gpu;
brts[i].unk2 = 0x0;
} else if (ctx->pipe_framebuffer.nr_cbufs > i) {
enum pipe_format format = ctx->pipe_framebuffer.cbufs[i]->format;
const struct util_format_description *format_desc;
format_desc = util_format_description(format);
brts[i].equation = *blend[i].equation.equation;
/* TODO: this is a bit more complicated */
brts[i].constant = blend[i].equation.constant;
brts[i].format = panfrost_format_to_bifrost_blend(format_desc);
/* 0x19 disables blending and forces REPLACE
* mode (equivalent to rgb_mode = alpha_mode =
* x122, colour mask = 0xF). 0x1a allows
* blending. */
brts[i].unk2 = blend[i].no_blending ? 0x19 : 0x1a;
brts[i].shader_type = fs->blend_types[i];
} else {
/* Dummy attachment for depth-only */
brts[i].unk2 = 0x3;
brts[i].shader_type = fs->blend_types[i];
}
} else {
struct midgard_blend_rt *mrts = rts;
mrts[i].flags = flags;
if (blend[i].is_shader) {
mrts[i].blend.shader = blend[i].shader.gpu | blend[i].shader.first_tag;
} else {
mrts[i].blend.equation = *blend[i].equation.equation;
mrts[i].blend.constant = blend[i].equation.constant;
}
}
}
}
static void
panfrost_frag_shader_meta_init(struct panfrost_context *ctx,
struct mali_shader_meta *fragmeta,
void *rts)
{
const struct panfrost_device *dev = pan_device(ctx->base.screen);
struct panfrost_shader_state *fs;
fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT);
bool msaa = ctx->rasterizer && ctx->rasterizer->base.multisample;
fragmeta->coverage_mask = msaa ? ctx->sample_mask : ~0;
fragmeta->unknown2_3 = MALI_DEPTH_FUNC(MALI_FUNC_ALWAYS) | 0x10;
fragmeta->unknown2_4 = 0x4e0;
/* unknown2_4 has 0x10 bit set on T6XX and T720. We don't know why this
* is required (independent of 32-bit/64-bit descriptors), or why it's
* not used on later GPU revisions. Otherwise, all shader jobs fault on
* these earlier chips (perhaps this is a chicken bit of some kind).
* More investigation is needed. */
SET_BIT(fragmeta->unknown2_4, 0x10, dev->quirks & MIDGARD_SFBD);
if (dev->quirks & IS_BIFROST) {
/* TODO */
} else {
/* Depending on whether it's legal to in the given shader, we try to
* enable early-z testing. TODO: respect e-z force */
SET_BIT(fragmeta->midgard1.flags_lo, MALI_EARLY_Z,
!fs->can_discard && !fs->writes_global &&
!fs->writes_depth && !fs->writes_stencil &&
!ctx->blend->base.alpha_to_coverage);
/* Add the writes Z/S flags if needed. */
SET_BIT(fragmeta->midgard1.flags_lo, MALI_WRITES_Z, fs->writes_depth);
SET_BIT(fragmeta->midgard1.flags_hi, MALI_WRITES_S, fs->writes_stencil);
/* Any time texturing is used, derivatives are implicitly calculated,
* so we need to enable helper invocations */
SET_BIT(fragmeta->midgard1.flags_lo, MALI_HELPER_INVOCATIONS,
fs->helper_invocations);
/* If discard is enabled, which bit we set to convey this
* depends on if depth/stencil is used for the draw or not.
* Just one of depth OR stencil is enough to trigger this. */
const struct pipe_depth_stencil_alpha_state *zsa = &ctx->depth_stencil->base;
bool zs_enabled = fs->writes_depth || fs->writes_stencil;
if (zsa) {
zs_enabled |= (zsa->depth.enabled && zsa->depth.func != PIPE_FUNC_ALWAYS);
zs_enabled |= zsa->stencil[0].enabled;
}
SET_BIT(fragmeta->midgard1.flags_lo, MALI_READS_TILEBUFFER,
fs->outputs_read || (!zs_enabled && fs->can_discard));
SET_BIT(fragmeta->midgard1.flags_lo, MALI_READS_ZS, zs_enabled && fs->can_discard);
}
panfrost_frag_meta_rasterizer_update(ctx, fragmeta);
panfrost_frag_meta_zsa_update(ctx, fragmeta);
panfrost_frag_meta_blend_update(ctx, fragmeta, rts);
}
void
panfrost_emit_shader_meta(struct panfrost_batch *batch,
enum pipe_shader_type st,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_shader_state *ss = panfrost_get_shader_state(ctx, st);
if (!ss) {
postfix->shader = 0;
return;
}
struct mali_shader_meta meta;
panfrost_shader_meta_init(ctx, st, &meta);
/* Add the shader BO to the batch. */
panfrost_batch_add_bo(batch, ss->bo,
PAN_BO_ACCESS_PRIVATE |
PAN_BO_ACCESS_READ |
panfrost_bo_access_for_stage(st));
mali_ptr shader_ptr;
if (st == PIPE_SHADER_FRAGMENT) {
struct panfrost_device *dev = pan_device(ctx->base.screen);
unsigned rt_count = MAX2(ctx->pipe_framebuffer.nr_cbufs, 1);
size_t desc_size = sizeof(meta);
void *rts = NULL;
struct panfrost_transfer xfer;
unsigned rt_size;
if (dev->quirks & MIDGARD_SFBD)
rt_size = 0;
else if (dev->quirks & IS_BIFROST)
rt_size = sizeof(struct bifrost_blend_rt);
else
rt_size = sizeof(struct midgard_blend_rt);
desc_size += rt_size * rt_count;
if (rt_size)
rts = rzalloc_size(ctx, rt_size * rt_count);
panfrost_frag_shader_meta_init(ctx, &meta, rts);
xfer = panfrost_pool_alloc(&batch->pool, desc_size);
memcpy(xfer.cpu, &meta, sizeof(meta));
memcpy(xfer.cpu + sizeof(meta), rts, rt_size * rt_count);
if (rt_size)
ralloc_free(rts);
shader_ptr = xfer.gpu;
} else {
shader_ptr = panfrost_pool_upload(&batch->pool, &meta,
sizeof(meta));
}
postfix->shader = shader_ptr;
}
void
panfrost_emit_viewport(struct panfrost_batch *batch,
struct mali_vertex_tiler_postfix *tiler_postfix)
{
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 = (int) (vp->translate[0] - fabsf(vp->scale[0]));
float vp_maxx = (int) (vp->translate[0] + fabsf(vp->scale[0]));
float vp_miny = (int) (vp->translate[1] - fabsf(vp->scale[1]));
float vp_maxy = (int) (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, vp_minx);
unsigned maxx = MIN2(fb->width, vp_maxx);
unsigned miny = MIN2(fb->height, vp_miny);
unsigned maxy = MIN2(fb->height, vp_maxy);
if (ss && rast && rast->scissor) {
minx = MAX2(ss->minx, minx);
miny = MAX2(ss->miny, miny);
maxx = MIN2(ss->maxx, maxx);
maxy = MIN2(ss->maxy, maxy);
}
struct panfrost_transfer T = panfrost_pool_alloc(&batch->pool, MALI_VIEWPORT_LENGTH);
pan_pack(T.cpu, VIEWPORT, cfg) {
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;
}
tiler_postfix->viewport = T.gpu;
panfrost_batch_union_scissor(batch, minx, miny, maxx, maxy);
}
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->gpu + cb->buffer_offset;
} else if (cb->user_buffer) {
return panfrost_pool_upload(&batch->pool,
cb->user_buffer +
cb->buffer_offset,
cb->buffer_size);
} 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->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->cpu;
else if (cb->user_buffer)
return cb->user_buffer;
else
unreachable("No constant buffer");
}
void
panfrost_emit_const_buf(struct panfrost_batch *batch,
enum pipe_shader_type stage,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_shader_variants *all = ctx->shader[stage];
if (!all)
return;
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_transfer transfer = panfrost_pool_alloc(&batch->pool,
size);
/* 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 */
unsigned ubo_count = panfrost_ubo_count(ctx, stage);
assert(ubo_count >= 1);
size_t sz = MALI_UNIFORM_BUFFER_LENGTH * ubo_count;
struct panfrost_transfer ubos = panfrost_pool_alloc(&batch->pool, sz);
uint64_t *ubo_ptr = (uint64_t *) ubos.cpu;
/* Upload uniforms as a UBO */
if (ss->uniform_count) {
pan_pack(ubo_ptr, UNIFORM_BUFFER, cfg) {
cfg.entries = ss->uniform_count;
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;
}
pan_pack(ubo_ptr + ubo, UNIFORM_BUFFER, cfg) {
cfg.entries = DIV_ROUND_UP(usz, 16);
cfg.pointer = panfrost_map_constant_buffer_gpu(batch,
stage, buf, ubo);
}
}
postfix->uniforms = transfer.gpu;
postfix->uniform_buffers = ubos.gpu;
buf->dirty_mask = 0;
}
void
panfrost_emit_shared_memory(struct panfrost_batch *batch,
const struct pipe_grid_info *info,
struct midgard_payload_vertex_tiler *vtp)
{
struct panfrost_context *ctx = batch->ctx;
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 shared_size = single_size * info->grid[0] * info->grid[1] *
info->grid[2] * 4;
struct panfrost_bo *bo = panfrost_batch_get_shared_memory(batch,
shared_size,
1);
struct mali_shared_memory shared = {
.shared_memory = bo->gpu,
.shared_workgroup_count =
util_logbase2_ceil(info->grid[0]) +
util_logbase2_ceil(info->grid[1]) +
util_logbase2_ceil(info->grid[2]),
.shared_unk1 = 0x2,
.shared_shift = util_logbase2(single_size) - 1
};
vtp->postfix.shared_memory = panfrost_pool_upload(&batch->pool, &shared,
sizeof(shared));
}
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->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->gpu ||
view->modifier != rsrc->modifier) {
panfrost_bo_unreference(view->bo);
panfrost_create_sampler_view_bo(view, pctx, &rsrc->base);
}
}
void
panfrost_emit_texture_descriptors(struct panfrost_batch *batch,
enum pipe_shader_type stage,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_device *device = pan_device(ctx->base.screen);
if (!ctx->sampler_view_count[stage])
return;
if (device->quirks & IS_BIFROST) {
struct panfrost_transfer T = panfrost_pool_alloc(&batch->pool,
MALI_BIFROST_TEXTURE_LENGTH *
ctx->sampler_view_count[stage]);
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));
}
postfix->textures = 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);
}
postfix->textures = panfrost_pool_upload(&batch->pool,
trampolines,
sizeof(uint64_t) *
ctx->sampler_view_count[stage]);
}
}
void
panfrost_emit_sampler_descriptors(struct panfrost_batch *batch,
enum pipe_shader_type stage,
struct mali_vertex_tiler_postfix *postfix)
{
struct panfrost_context *ctx = batch->ctx;
if (!ctx->sampler_count[stage])
return;
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_transfer T = panfrost_pool_alloc(&batch->pool, sz);
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;
postfix->sampler_descriptor = T.gpu;
}
void
panfrost_emit_vertex_data(struct panfrost_batch *batch,
struct mali_vertex_tiler_postfix *vertex_postfix)
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_vertex_state *so = ctx->vertex;
unsigned instance_shift = vertex_postfix->instance_shift;
unsigned instance_odd = vertex_postfix->instance_odd;
/* Worst case: everything is NPOT */
struct panfrost_transfer S = panfrost_pool_alloc(&batch->pool,
MALI_ATTRIBUTE_LENGTH * PIPE_MAX_ATTRIBS * 2);
struct panfrost_transfer T = panfrost_pool_alloc(&batch->pool,
MALI_ATTRIBUTE_LENGTH * (PAN_INSTANCE_ID + 1));
struct mali_attribute_buffer_packed *bufs =
(struct mali_attribute_buffer_packed *) S.cpu;
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 a mali_attr to be 1:1 with the mali_attr_meta, 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->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.pointer = addr;
cfg.stride = stride;
cfg.size = size;
cfg.divisor_r = instance_shift;
cfg.divisor_p = instance_odd;
}
} 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 */
panfrost_vertex_id(ctx->padded_count, (union mali_attr *) &bufs[k]);
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, (union mali_attr *) &bufs[k]);
pan_pack(out + PAN_INSTANCE_ID, ATTRIBUTE, cfg) {
cfg.buffer_index = k++;
cfg.format = so->formats[PAN_INSTANCE_ID];
}
/* 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.
*/
unsigned start = vertex_postfix->offset_start;
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 && start)
src_offset -= buf->stride * start;
pan_pack(out + i, ATTRIBUTE, cfg) {
cfg.buffer_index = attrib_to_buffer[i];
cfg.format = so->formats[i];
cfg.offset = src_offset;
}
}
vertex_postfix->attributes = S.gpu;
vertex_postfix->attribute_meta = T.gpu;
}
static mali_ptr
panfrost_emit_varyings(struct panfrost_batch *batch, union mali_attr *slot,
unsigned stride, unsigned count)
{
/* Fill out the descriptor */
slot->stride = stride;
slot->size = stride * count;
slot->shift = slot->extra_flags = 0;
struct panfrost_transfer transfer = panfrost_pool_alloc(&batch->pool,
slot->size);
slot->elements = transfer.gpu | MALI_ATTR_LINEAR;
return transfer.gpu;
}
static unsigned
panfrost_streamout_offset(unsigned stride, unsigned offset,
struct pipe_stream_output_target *target)
{
return (target->buffer_offset + (offset * stride * 4)) & 63;
}
static void
panfrost_emit_streamout(struct panfrost_batch *batch, union mali_attr *slot,
unsigned stride, unsigned offset, unsigned count,
struct pipe_stream_output_target *target)
{
/* Fill out the descriptor */
slot->stride = stride * 4;
slot->shift = slot->extra_flags = 0;
unsigned max_size = target->buffer_size;
unsigned expected_size = slot->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->gpu + target->buffer_offset + (offset * slot->stride);
slot->elements = (addr & ~63) | MALI_ATTR_LINEAR;
slot->size = MIN2(max_size, expected_size) + (addr & 63);
}
static bool
has_point_coord(unsigned mask, gl_varying_slot loc)
{
if ((loc >= VARYING_SLOT_TEX0) && (loc <= VARYING_SLOT_TEX7))
return (mask & (1 << (loc - VARYING_SLOT_TEX0)));
else if (loc == VARYING_SLOT_PNTC)
return (mask & (1 << 8));
else
return false;
}
/* 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)
{
/* 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 (has_point_coord(fs->point_sprite_mask, loc))
present |= (1 << PAN_VARY_PNTCOORD);
}
return present;
}
/* Emitters for varying records */
static struct mali_attr_meta
pan_emit_vary(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);
struct mali_attr_meta meta = {
.index = pan_varying_index(present, buf),
.unknown1 = quirks & IS_BIFROST ? 0x0 : 0x2,
.format = (format << 12) | swizzle,
.src_offset = offset
};
return meta;
}
/* General varying that is unused */
static struct mali_attr_meta
pan_emit_vary_only(unsigned present, unsigned quirks)
{
return pan_emit_vary(present, 0, quirks, MALI_VARYING_DISCARD, 0);
}
/* Special records */
static const enum mali_format pan_varying_formats[PAN_VARY_MAX] = {
[PAN_VARY_POSITION] = MALI_VARYING_POS,
[PAN_VARY_PSIZ] = MALI_R16F,
[PAN_VARY_PNTCOORD] = MALI_R16F,
[PAN_VARY_FACE] = MALI_R32I,
[PAN_VARY_FRAGCOORD] = MALI_RGBA32F
};
static struct mali_attr_meta
pan_emit_vary_special(unsigned present, enum pan_special_varying buf,
unsigned quirks)
{
assert(buf < PAN_VARY_MAX);
return pan_emit_vary(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 struct mali_attr_meta
pan_emit_vary_xfb(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);
/* Otherwise construct a record for it */
struct mali_attr_meta meta = {
/* XFB buffers come after everything else */
.index = pan_xfb_base(present) + o.output_buffer,
/* As usual unknown bit */
.unknown1 = quirks & IS_BIFROST ? 0x0 : 0x2,
/* Override number of channels and precision to highp */
.format = (pan_xfb_format(format, o.num_components) << 12) | swizzle,
/* Apply given offsets together */
.src_offset = (o.dst_offset * 4) /* dwords */
+ streamout_offsets[o.output_buffer]
};
return meta;
}
/* 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;
}
/* Higher-level wrapper around all of the above, classifying a varying into one
* of the above types */
static struct mali_attr_meta
panfrost_emit_varying(
struct panfrost_shader_state *stage,
struct panfrost_shader_state *other,
struct panfrost_shader_state *xfb,
unsigned present,
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 (has_point_coord(stage->point_sprite_mask, loc)) {
return pan_emit_vary_special(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);
return pan_emit_vary_xfb(present, max_xfb, streamout_offsets, quirks, format, *o);
} else if (loc == VARYING_SLOT_POS) {
if (is_fragment)
return pan_emit_vary_special(present, PAN_VARY_FRAGCOORD, quirks);
else
return pan_emit_vary_special(present, PAN_VARY_POSITION, quirks);
} else if (loc == VARYING_SLOT_PSIZ) {
return pan_emit_vary_special(present, PAN_VARY_PSIZ, quirks);
} else if (loc == VARYING_SLOT_PNTC) {
return pan_emit_vary_special(present, PAN_VARY_PNTCOORD, quirks);
} else if (loc == VARYING_SLOT_FACE) {
return pan_emit_vary_special(present, PAN_VARY_FACE, quirks);
}
/* We've exhausted special cases, so it's otherwise a general varying. 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)
return pan_emit_vary_only(present, quirks);
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;
}
return pan_emit_vary(present, PAN_VARY_GENERAL,
quirks, format, offset);
}
static void
pan_emit_special_input(union mali_attr *varyings,
unsigned present,
enum pan_special_varying v,
mali_ptr addr)
{
if (present & (1 << v)) {
/* Ensure we write exactly once for performance and with fields
* zeroed appropriately to avoid flakes */
union mali_attr s = {
.elements = addr
};
varyings[pan_varying_index(present, v)] = s;
}
}
void
panfrost_emit_varying_descriptor(struct panfrost_batch *batch,
unsigned vertex_count,
struct mali_vertex_tiler_postfix *vertex_postfix,
struct mali_vertex_tiler_postfix *tiler_postfix,
union midgard_primitive_size *primitive_size)
{
/* 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 = sizeof(struct mali_attr_meta) * vs->varying_count;
fs_size = sizeof(struct mali_attr_meta) * fs->varying_count;
struct panfrost_transfer trans = panfrost_pool_alloc(&batch->pool,
vs_size +
fs_size);
struct pipe_stream_output_info *so = &vs->stream_output;
unsigned present = pan_varying_present(vs, fs, dev->quirks);
/* 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.offsets[i],
ctx->streamout.targets[i]);
}
struct mali_attr_meta *ovs = (struct mali_attr_meta *)trans.cpu;
struct mali_attr_meta *ofs = ovs + vs->varying_count;
for (unsigned i = 0; i < vs->varying_count; i++) {
ovs[i] = panfrost_emit_varying(vs, fs, vs, present,
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++) {
ofs[i] = panfrost_emit_varying(fs, vs, vs, present,
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_transfer T = panfrost_pool_alloc(&batch->pool,
sizeof(union mali_attr) * (xfb_base + ctx->streamout.num_targets));
union mali_attr *varyings = (union mali_attr *) T.cpu;
/* 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],
ctx->streamout.offsets[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 */
tiler_postfix->position_varying = panfrost_emit_varyings(batch,
&varyings[pan_varying_index(present, PAN_VARY_POSITION)],
sizeof(float) * 4, vertex_count);
if (present & (1 << PAN_VARY_PSIZ)) {
primitive_size->pointer = 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_VARYING_POINT_COORD);
pan_emit_special_input(varyings, present, PAN_VARY_FACE, MALI_VARYING_FRONT_FACING);
pan_emit_special_input(varyings, present, PAN_VARY_FRAGCOORD, MALI_VARYING_FRAG_COORD);
vertex_postfix->varyings = T.gpu;
tiler_postfix->varyings = T.gpu;
vertex_postfix->varying_meta = trans.gpu;
tiler_postfix->varying_meta = trans.gpu + vs_size;
}
void
panfrost_emit_vertex_tiler_jobs(struct panfrost_batch *batch,
struct mali_vertex_tiler_prefix *vertex_prefix,
struct mali_vertex_tiler_postfix *vertex_postfix,
struct mali_vertex_tiler_prefix *tiler_prefix,
struct mali_vertex_tiler_postfix *tiler_postfix,
union midgard_primitive_size *primitive_size)
{
struct panfrost_context *ctx = batch->ctx;
struct panfrost_device *device = pan_device(ctx->base.screen);
bool wallpapering = ctx->wallpaper_batch && batch->scoreboard.tiler_dep;
struct bifrost_payload_vertex bifrost_vertex = {0,};
struct bifrost_payload_tiler bifrost_tiler = {0,};
struct midgard_payload_vertex_tiler midgard_vertex = {0,};
struct midgard_payload_vertex_tiler midgard_tiler = {0,};
void *vp, *tp;
size_t vp_size, tp_size;
if (device->quirks & IS_BIFROST) {
bifrost_vertex.prefix = *vertex_prefix;
bifrost_vertex.postfix = *vertex_postfix;
vp = &bifrost_vertex;
vp_size = sizeof(bifrost_vertex);
bifrost_tiler.prefix = *tiler_prefix;
bifrost_tiler.tiler.primitive_size = *primitive_size;
bifrost_tiler.tiler.tiler_meta = panfrost_batch_get_tiler_meta(batch, ~0);
bifrost_tiler.postfix = *tiler_postfix;
tp = &bifrost_tiler;
tp_size = sizeof(bifrost_tiler);
} else {
midgard_vertex.prefix = *vertex_prefix;
midgard_vertex.postfix = *vertex_postfix;
vp = &midgard_vertex;
vp_size = sizeof(midgard_vertex);
midgard_tiler.prefix = *tiler_prefix;
midgard_tiler.postfix = *tiler_postfix;
midgard_tiler.primitive_size = *primitive_size;
tp = &midgard_tiler;
tp_size = sizeof(midgard_tiler);
}
if (wallpapering) {
/* Inject in reverse order, with "predicted" job indices.
* THIS IS A HACK XXX */
panfrost_new_job(&batch->pool, &batch->scoreboard, MALI_JOB_TYPE_TILER, false,
batch->scoreboard.job_index + 2, tp, tp_size, true);
panfrost_new_job(&batch->pool, &batch->scoreboard, MALI_JOB_TYPE_VERTEX, false, 0,
vp, vp_size, true);
return;
}
/* If rasterizer discard is enable, only submit the vertex */
bool rasterizer_discard = ctx->rasterizer &&
ctx->rasterizer->base.rasterizer_discard;
unsigned vertex = panfrost_new_job(&batch->pool, &batch->scoreboard, MALI_JOB_TYPE_VERTEX, false, 0,
vp, vp_size, false);
if (rasterizer_discard)
return;
panfrost_new_job(&batch->pool, &batch->scoreboard, MALI_JOB_TYPE_TILER, false, vertex, tp, tp_size,
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(&batch->pool, locations, 96 * sizeof(uint16_t));
}
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