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/*
* Copyright 2018-2019 Alyssa Rosenzweig
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include "pan_bo.h"
#include "pan_context.h"
#include "pan_util.h"
#include "pan_format.h"
#include "util/format/u_format.h"
static struct mali_sfbd_format
panfrost_sfbd_format(struct pipe_surface *surf)
{
/* Explode details on the format */
const struct util_format_description *desc =
util_format_description(surf->format);
/* The swizzle for rendering is inverted from texturing */
unsigned char swizzle[4];
panfrost_invert_swizzle(desc->swizzle, swizzle);
struct mali_sfbd_format fmt = {
.unk1 = 0x1,
.swizzle = panfrost_translate_swizzle_4(swizzle),
.nr_channels = MALI_POSITIVE(desc->nr_channels),
.unk2 = 0x4,
.unk3 = 0xb,
};
if (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB)
fmt.unk2 |= MALI_SFBD_FORMAT_SRGB;
/* sRGB handled as a dedicated flag */
enum pipe_format linearized = util_format_linear(surf->format);
/* If RGB, we're good to go */
if (util_format_is_unorm8(desc))
return fmt;
switch (linearized) {
case PIPE_FORMAT_B5G6R5_UNORM:
fmt.unk1 = 0x5;
fmt.nr_channels = MALI_POSITIVE(2);
fmt.unk2 = 0x5;
break;
case PIPE_FORMAT_A4B4G4R4_UNORM:
case PIPE_FORMAT_B4G4R4A4_UNORM:
fmt.unk1 = 0x4;
fmt.nr_channels = MALI_POSITIVE(1);
fmt.unk2 = 0x5;
break;
default:
unreachable("Invalid format rendering");
}
return fmt;
}
static void
panfrost_sfbd_clear(
struct panfrost_batch *batch,
struct mali_single_framebuffer *sfbd)
{
if (batch->clear & PIPE_CLEAR_COLOR) {
sfbd->clear_color_1 = batch->clear_color[0][0];
sfbd->clear_color_2 = batch->clear_color[0][1];
sfbd->clear_color_3 = batch->clear_color[0][2];
sfbd->clear_color_4 = batch->clear_color[0][3];
}
if (batch->clear & PIPE_CLEAR_DEPTH) {
sfbd->clear_depth_1 = batch->clear_depth;
sfbd->clear_depth_2 = batch->clear_depth;
sfbd->clear_depth_3 = batch->clear_depth;
sfbd->clear_depth_4 = batch->clear_depth;
}
if (batch->clear & PIPE_CLEAR_STENCIL) {
sfbd->clear_stencil = batch->clear_stencil;
}
/* Set flags based on what has been cleared, for the SFBD case */
/* XXX: What do these flags mean? */
int clear_flags = 0x101100;
if (!(batch->clear & ~(PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))) {
/* On a tiler like this, it's fastest to clear all three buffers at once */
clear_flags |= MALI_CLEAR_FAST;
} else {
clear_flags |= MALI_CLEAR_SLOW;
if (batch->clear & PIPE_CLEAR_STENCIL)
clear_flags |= MALI_CLEAR_SLOW_STENCIL;
}
sfbd->clear_flags = clear_flags;
}
static void
panfrost_sfbd_set_cbuf(
struct mali_single_framebuffer *fb,
struct pipe_surface *surf)
{
struct panfrost_resource *rsrc = pan_resource(surf->texture);
unsigned level = surf->u.tex.level;
unsigned first_layer = surf->u.tex.first_layer;
assert(surf->u.tex.last_layer == first_layer);
signed stride = rsrc->slices[level].stride;
mali_ptr base = panfrost_get_texture_address(rsrc, level, first_layer);
fb->format = panfrost_sfbd_format(surf);
fb->framebuffer = base;
fb->stride = stride;
if (rsrc->layout == PAN_LINEAR)
fb->format.block = MALI_BLOCK_LINEAR;
else if (rsrc->layout == PAN_TILED) {
fb->format.block = MALI_BLOCK_TILED;
fb->stride *= 16;
} else {
fprintf(stderr, "Invalid render layout\n");
assert(0);
}
}
static void
panfrost_sfbd_set_zsbuf(
struct mali_single_framebuffer *fb,
struct pipe_surface *surf)
{
struct panfrost_resource *rsrc = pan_resource(surf->texture);
struct panfrost_context *ctx = pan_context(surf->context);
unsigned level = surf->u.tex.level;
assert(surf->u.tex.first_layer == 0);
if (rsrc->layout != PAN_LINEAR)
unreachable("Invalid render layout.");
fb->depth_buffer = rsrc->bo->gpu + rsrc->slices[level].offset;
fb->depth_stride = rsrc->slices[level].stride;
/* No stencil? Job done. */
if (!ctx->depth_stencil || !ctx->depth_stencil->stencil[0].enabled)
return;
if (panfrost_is_z24s8_variant(surf->format)) {
/* Stencil data is interleaved with depth */
fb->stencil_buffer = fb->depth_buffer;
fb->stencil_stride = fb->depth_stride;
} else if (surf->format == PIPE_FORMAT_Z32_UNORM ||
surf->format == PIPE_FORMAT_Z32_FLOAT) {
/* No stencil, nothing to do */
} else if (surf->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
/* Stencil data in separate buffer */
struct panfrost_resource *stencil = rsrc->separate_stencil;
struct panfrost_slice stencil_slice = stencil->slices[level];
fb->stencil_buffer = stencil->bo->gpu + stencil_slice.offset;
fb->stencil_stride = stencil_slice.stride;
} else
unreachable("Unsupported depth/stencil format.");
}
/* Creates an SFBD for the FRAGMENT section of the bound framebuffer */
mali_ptr
panfrost_sfbd_fragment(struct panfrost_batch *batch, bool has_draws)
{
struct mali_single_framebuffer fb = panfrost_emit_sfbd(batch, has_draws);
panfrost_sfbd_clear(batch, &fb);
/* SFBD does not support MRT natively; sanity check */
assert(batch->key.nr_cbufs <= 1);
if (batch->key.nr_cbufs) {
struct pipe_surface *surf = batch->key.cbufs[0];
struct panfrost_resource *rsrc = pan_resource(surf->texture);
struct panfrost_bo *bo = rsrc->bo;
panfrost_sfbd_set_cbuf(&fb, surf);
if (rsrc->checksummed) {
unsigned level = surf->u.tex.level;
struct panfrost_slice *slice = &rsrc->slices[level];
fb.checksum_stride = slice->checksum_stride;
fb.checksum = bo->gpu + slice->checksum_offset;
}
}
if (batch->key.zsbuf)
panfrost_sfbd_set_zsbuf(&fb, batch->key.zsbuf);
if (batch->requirements & PAN_REQ_MSAA) {
fb.format.unk1 |= MALI_SFBD_FORMAT_MSAA_A;
fb.format.unk2 |= MALI_SFBD_FORMAT_MSAA_B;
}
return panfrost_upload_transient(batch, &fb, sizeof(fb)) | MALI_SFBD;
}
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