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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_context.h"
#include "pan_util.h"
#include "pan_format.h"
#include "util/u_format.h"
static unsigned
panfrost_sfbd_format(struct pipe_surface *surf)
{
/* TODO */
return 0xb84e0281; /* RGB32, no MSAA */
}
static void
panfrost_sfbd_clear(
struct panfrost_job *job,
struct mali_single_framebuffer *sfbd)
{
struct panfrost_context *ctx = job->ctx;
if (job->clear & PIPE_CLEAR_COLOR) {
sfbd->clear_color_1 = job->clear_color;
sfbd->clear_color_2 = job->clear_color;
sfbd->clear_color_3 = job->clear_color;
sfbd->clear_color_4 = job->clear_color;
}
if (job->clear & PIPE_CLEAR_DEPTH) {
sfbd->clear_depth_1 = job->clear_depth;
sfbd->clear_depth_2 = job->clear_depth;
sfbd->clear_depth_3 = job->clear_depth;
sfbd->clear_depth_4 = job->clear_depth;
sfbd->depth_buffer = ctx->depth_stencil_buffer.gpu;
sfbd->depth_buffer_enable = MALI_DEPTH_STENCIL_ENABLE;
}
if (job->clear & PIPE_CLEAR_STENCIL) {
sfbd->clear_stencil = job->clear_stencil;
sfbd->stencil_buffer = ctx->depth_stencil_buffer.gpu;
sfbd->stencil_buffer_enable = MALI_DEPTH_STENCIL_ENABLE;
}
/* Set flags based on what has been cleared, for the SFBD case */
/* XXX: What do these flags mean? */
int clear_flags = 0x101100;
if (!(job->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 (job->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,
bool flip_y)
{
struct panfrost_resource *rsrc = pan_resource(surf->texture);
signed stride = rsrc->bo->stride;
fb->format = panfrost_sfbd_format(surf);
if (rsrc->bo->layout == PAN_LINEAR) {
mali_ptr framebuffer = rsrc->bo->gpu[0];
/* The default is upside down from OpenGL's perspective. */
if (flip_y) {
framebuffer += stride * (surf->texture->height0 - 1);
stride = -stride;
}
fb->framebuffer = framebuffer;
fb->stride = stride;
} else {
fprintf(stderr, "Invalid render layout\n");
assert(0);
}
}
/* Creates an SFBD for the FRAGMENT section of the bound framebuffer */
mali_ptr
panfrost_sfbd_fragment(struct panfrost_context *ctx, bool flip_y)
{
struct panfrost_job *job = panfrost_get_job_for_fbo(ctx);
struct mali_single_framebuffer fb = panfrost_emit_sfbd(ctx);
panfrost_sfbd_clear(job, &fb);
/* SFBD does not support MRT natively; sanity check */
assert(ctx->pipe_framebuffer.nr_cbufs == 1);
panfrost_sfbd_set_cbuf(&fb, ctx->pipe_framebuffer.cbufs[0], flip_y);
if (ctx->pipe_framebuffer.zsbuf) {
/* TODO */
}
if (job->requirements & PAN_REQ_MSAA)
fb.format |= MALI_FRAMEBUFFER_MSAA_A | MALI_FRAMEBUFFER_MSAA_B;
return panfrost_upload_transient(ctx, &fb, sizeof(fb)) | MALI_SFBD;
}
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