quakeforge/libs/video/renderer/vulkan/vulkan_compose.c

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/*
vulkan_compose.c
Vulkan compose pass pipeline
Copyright (C) 2021 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2021/2/23
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include "qfalloca.h"
#include "QF/cvar.h"
#include "QF/sys.h"
#include "QF/Vulkan/qf_compose.h"
#include "QF/Vulkan/qf_translucent.h"
#include "QF/Vulkan/debug.h"
#include "QF/Vulkan/descriptor.h"
#include "QF/Vulkan/device.h"
#include "QF/Vulkan/image.h"
#include "QF/Vulkan/instance.h"
#include "QF/Vulkan/render.h"
#include "r_internal.h"
#include "vid_vulkan.h"
static VkDescriptorImageInfo base_image_info = {
0, 0, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
};
static VkWriteDescriptorSet base_image_write = {
VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, 0, 0,
0, 0, 1,
VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT,
0, 0, 0
};
static void
compose_draw (const exprval_t **params, exprval_t *result, exprctx_t *ectx)
{
auto taskctx = (qfv_taskctx_t *) ectx;
auto ctx = taskctx->ctx;
auto device = ctx->device;
auto dfunc = device->funcs;
auto cctx = ctx->compose_context;
auto cframe = &cctx->frames.a[ctx->curFrame];
auto layout = taskctx->pipeline->layout;
auto cmd = taskctx->cmd;
auto fb = &taskctx->renderpass->framebuffer;
cframe->imageInfo[0].imageView = fb->views[QFV_attachOpaque];
dfunc->vkUpdateDescriptorSets (device->dev, COMPOSE_IMAGE_INFOS,
cframe->descriptors, 0, 0);
VkDescriptorSet sets[] = {
cframe->descriptors[0].dstSet,
Vulkan_Translucent_Descriptors (ctx, ctx->curFrame),
};
dfunc->vkCmdBindDescriptorSets (cmd, VK_PIPELINE_BIND_POINT_GRAPHICS,
layout, 0, 2, sets, 0, 0);
dfunc->vkCmdDraw (cmd, 3, 1, 0, 0);
}
static exprfunc_t compose_draw_func[] = {
{ .func = compose_draw },
{}
};
static exprsym_t compose_task_syms[] = {
{ "compose_draw", &cexpr_function, compose_draw_func },
{}
};
void
Vulkan_Compose_Init (vulkan_ctx_t *ctx)
{
qfv_device_t *device = ctx->device;
qfvPushDebug (ctx, "compose init");
QFV_Render_AddTasks (ctx, compose_task_syms);
composectx_t *cctx = calloc (1, sizeof (composectx_t));
ctx->compose_context = cctx;
auto rctx = ctx->render_context;
size_t frames = rctx->frames.size;
DARRAY_INIT (&cctx->frames, frames);
DARRAY_RESIZE (&cctx->frames, frames);
cctx->frames.grow = 0;
__auto_type attach = QFV_AllocDescriptorSetLayoutSet (frames, alloca);
for (size_t i = 0; i < frames; i++) {
attach->a[i] = Vulkan_CreateDescriptorSetLayout (ctx,
"compose_attach");
}
__auto_type attach_pool = Vulkan_CreateDescriptorPool (ctx,
"compose_attach_pool");
__auto_type attach_set = QFV_AllocateDescriptorSet (device, attach_pool,
attach);
for (size_t i = 0; i < frames; i++) {
__auto_type cframe = &cctx->frames.a[i];
for (int j = 0; j < COMPOSE_IMAGE_INFOS; j++) {
cframe->imageInfo[j] = base_image_info;
cframe->imageInfo[j].sampler = 0;
cframe->descriptors[j] = base_image_write;
cframe->descriptors[j].dstSet = attach_set->a[i];
cframe->descriptors[j].dstBinding = j;
cframe->descriptors[j].pImageInfo = &cframe->imageInfo[j];
}
}
free (attach_set);
qfvPopDebug (ctx);
}
void
Vulkan_Compose_Shutdown (vulkan_ctx_t *ctx)
{
composectx_t *cctx = ctx->compose_context;
free (cctx->frames.a);
free (cctx);
}