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quakeforge/libs/video/renderer/vulkan/vulkan_matrices.c
2022-05-08 17:57:40 +09:00

278 lines
7.6 KiB
C

/*
vid_common_vulkan.c
Common Vulkan video driver functions
Copyright (C) 2021 Bill Currie <bill@taniwha.org>
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
#ifdef HAVE_MATH_H
# include <math.h>
#endif
#include "QF/cvar.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/Vulkan/qf_matrices.h"
#include "QF/Vulkan/barrier.h"
#include "QF/Vulkan/buffer.h"
#include "QF/Vulkan/debug.h"
#include "QF/Vulkan/descriptor.h"
#include "QF/Vulkan/device.h"
#include "QF/Vulkan/instance.h"
#include "QF/Vulkan/renderpass.h"
#include "QF/Vulkan/staging.h"
#include "r_internal.h"
#include "vid_vulkan.h"
static void
setup_view (vulkan_ctx_t *ctx)
{
mat4f_t view;
// Quake's world is z-up, x-forward, y-left, but Vulkan's world is
// z-forward, x-right, y-down.
static mat4f_t z_up = {
{ 0, 0, 1, 0},
{-1, 0, 0, 0},
{ 0,-1, 0, 0},
{ 0, 0, 0, 1},
};
mmulf (view, z_up, r_refdef.camera_inverse);
Vulkan_SetViewMatrix (ctx, view);
}
static void
setup_sky (vulkan_ctx_t *ctx)
{
__auto_type mctx = ctx->matrix_context;
vec4f_t q;
mat4f_t m;
float blend;
mat4f_t mat;
while (vr_data.realtime - mctx->sky_time > 1) {
mctx->sky_rotation[0] = mctx->sky_rotation[1];
mctx->sky_rotation[1] = qmulf (mctx->sky_velocity,
mctx->sky_rotation[0]);
mctx->sky_time += 1;
}
blend = bound (0, (vr_data.realtime - mctx->sky_time), 1);
q = Blend (mctx->sky_rotation[0], mctx->sky_rotation[1], blend);
q = normalf (qmulf (mctx->sky_fix, q));
mat4fidentity (mat);
VectorNegate (r_refdef.frame.position, mat[3]);
mat4fquat (m, q);
mmulf (mat, m, mat);
Vulkan_SetSkyMatrix (ctx, mat);
}
void
Vulkan_SetViewMatrix (vulkan_ctx_t *ctx, mat4f_t view)
{
__auto_type mctx = ctx->matrix_context;
if (memcmp (mctx->matrices.View, view, sizeof (mat4f_t))) {
memcpy (mctx->matrices.View, view, sizeof (mat4f_t));
mctx->dirty = mctx->frames.size;
}
}
void
Vulkan_SetSkyMatrix (vulkan_ctx_t *ctx, mat4f_t sky)
{
__auto_type mctx = ctx->matrix_context;
if (memcmp (mctx->matrices.Sky, sky, sizeof (mat4f_t))) {
memcpy (mctx->matrices.Sky, sky, sizeof (mat4f_t));
mctx->dirty = mctx->frames.size;
}
}
void
Vulkan_Matrix_Draw (qfv_renderframe_t *rFrame)
{
vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
__auto_type mctx = ctx->matrix_context;
__auto_type mframe = &mctx->frames.a[ctx->curFrame];
setup_view (ctx);
setup_sky (ctx);
if (mctx->dirty <= 0) {
mctx->dirty = 0;
return;
}
mctx->dirty--;
qfv_packet_t *packet = QFV_PacketAcquire (mctx->stage);
qfv_matrix_buffer_t *m = QFV_PacketExtend (packet, sizeof (*m));
*m = mctx->matrices;
qfv_bufferbarrier_t bb = bufferBarriers[qfv_BB_Unknown_to_TransferWrite]; bb.barrier.buffer = mframe->buffer;
bb.barrier.size = packet->length;
dfunc->vkCmdPipelineBarrier (packet->cmd, bb.srcStages, bb.dstStages,
0, 0, 0, 1, &bb.barrier, 0, 0);
VkBufferCopy copy_region = { packet->offset, 0, packet->length };
dfunc->vkCmdCopyBuffer (packet->cmd, mctx->stage->buffer,
mframe->buffer, 1, &copy_region);
bb = bufferBarriers[qfv_LT_TransferDst_to_ShaderReadOnly];
bb.barrier.buffer = mframe->buffer;
bb.barrier.size = packet->length;
dfunc->vkCmdPipelineBarrier (packet->cmd, bb.srcStages, bb.dstStages,
0, 0, 0, 1, &bb.barrier, 0, 0);
QFV_PacketSubmit (packet);
}
void
Vulkan_Matrix_Init (vulkan_ctx_t *ctx)
{
qfvPushDebug (ctx, "matrix init");
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
matrixctx_t *mctx = calloc (1, sizeof (matrixctx_t));
ctx->matrix_context = mctx;
size_t frames = ctx->frames.size;
DARRAY_INIT (&mctx->frames, frames);
DARRAY_RESIZE (&mctx->frames, frames);
mctx->frames.grow = 0;
//__auto_type cmdBuffers = QFV_AllocCommandBufferSet (frames, alloca);
//QFV_AllocateCommandBuffers (device, ctx->cmdpool, 1, cmdBuffers);
mctx->pool = Vulkan_CreateDescriptorPool (ctx, "matrix_pool");
mctx->setLayout = Vulkan_CreateDescriptorSetLayout (ctx, "matrix_set");
__auto_type layouts = QFV_AllocDescriptorSetLayoutSet (frames, alloca);
for (size_t i = 0; i < layouts->size; i++) {
layouts->a[i] = mctx->setLayout;
}
for (size_t i = 0; i < frames; i++) {
__auto_type mframe = &mctx->frames.a[i];
//mframe->cmd = cmdBuffers->a[i];
mframe->buffer = QFV_CreateBuffer (device, sizeof (qfv_matrix_buffer_t),
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT
| VK_BUFFER_USAGE_TRANSFER_DST_BIT);
QFV_duSetObjectName (device, VK_OBJECT_TYPE_BUFFER,
mframe->buffer, va (ctx->va_ctx,
"buffer:matrices:%zd", i));
}
VkMemoryRequirements req;
//offset = (offset + req.alignment - 1) & ~(req.alignment - 1);
dfunc->vkGetBufferMemoryRequirements (device->dev,
mctx->frames.a[0].buffer, &req);
mctx->memory = QFV_AllocBufferMemory (device, mctx->frames.a[0].buffer,
VK_MEMORY_PROPERTY_HOST_CACHED_BIT,
frames * req.size, 0);
QFV_duSetObjectName (device, VK_OBJECT_TYPE_DEVICE_MEMORY,
mctx->memory, "memory:matrices");
__auto_type sets = QFV_AllocateDescriptorSet (device, mctx->pool, layouts);
for (size_t i = 0; i < frames; i++) {
__auto_type mframe = &mctx->frames.a[i];
QFV_BindBufferMemory (device, mframe->buffer, mctx->memory,
i * req.size);
mframe->descriptors = sets->a[i];
VkDescriptorBufferInfo bufferInfo = {
mframe->buffer, 0, VK_WHOLE_SIZE
};
VkWriteDescriptorSet write[] = {
{ VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, 0,
mframe->descriptors, 0, 0, 1,
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
0, &bufferInfo, 0 },
};
dfunc->vkUpdateDescriptorSets (device->dev, 1, write, 0, 0);
}
free (sets);
mctx->sky_fix = (vec4f_t) { 0, 0, 1, 1 } * sqrtf (0.5);
mctx->sky_rotation[0] = (vec4f_t) { 0, 0, 0, 1};
mctx->sky_rotation[1] = mctx->sky_rotation[0];
mctx->sky_velocity = (vec4f_t) { };
mctx->sky_velocity = qexpf (mctx->sky_velocity);
mctx->sky_time = vr_data.realtime;
mat4fidentity (mctx->matrices.Projection3d);
mat4fidentity (mctx->matrices.View);
mat4fidentity (mctx->matrices.Sky);
mat4fidentity (mctx->matrices.Projection2d);
mctx->dirty = mctx->frames.size;
mctx->stage = QFV_CreateStagingBuffer (device, "matrix",
frames * sizeof (qfv_matrix_buffer_t),
ctx->cmdpool);
qfvPopDebug (ctx);
}
void
Vulkan_Matrix_Shutdown (vulkan_ctx_t *ctx)
{
qfvPushDebug (ctx, "matrix shutdown");
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
__auto_type mctx = ctx->matrix_context;
QFV_DestroyStagingBuffer (mctx->stage);
for (size_t i = 0; i < mctx->frames.size; i++) {
__auto_type mframe = &mctx->frames.a[i];
dfunc->vkDestroyBuffer (device->dev, mframe->buffer, 0);
}
dfunc->vkFreeMemory (device->dev, mctx->memory, 0);
qfvPopDebug (ctx);
}
VkDescriptorSet
Vulkan_Matrix_Descriptors (vulkan_ctx_t *ctx, int frame)
{
__auto_type mctx = ctx->matrix_context;
return mctx->frames.a[frame].descriptors;
}