mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-03 09:32:31 +00:00
e67ec84db9
While both matrices had positive determinants in the first place, I find the projection matrix easier to understand without all the negatives, and having quake-x/vulkan-z positively parallel in the z-up matrix makes that a lot easier to think about.
329 lines
9.3 KiB
C
329 lines
9.3 KiB
C
/*
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vid_common_vulkan.c
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Common Vulkan video driver functions
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Copyright (C) 2021 Bill Currie <bill@taniwha.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_MATH_H
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# include <math.h>
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#endif
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#include "QF/cvar.h"
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#include "QF/sys.h"
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#include "QF/va.h"
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#include "QF/vid.h"
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#include "QF/Vulkan/qf_matrices.h"
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#include "QF/Vulkan/barrier.h"
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#include "QF/Vulkan/buffer.h"
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#include "QF/Vulkan/debug.h"
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#include "QF/Vulkan/descriptor.h"
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#include "QF/Vulkan/device.h"
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#include "QF/Vulkan/instance.h"
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#include "QF/Vulkan/projection.h"
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#include "QF/Vulkan/renderpass.h"
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#include "QF/Vulkan/staging.h"
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#include "QF/ui/view.h"
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#include "r_internal.h"
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#include "vid_vulkan.h"
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#include "util.h"
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static void
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setup_view (vulkan_ctx_t *ctx)
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{
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mat4f_t view;
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// Quake's world is z-up, x-forward, y-left, but Vulkan's world is
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// z-forward, x-right, y-down.
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static mat4f_t z_up = {
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{ 0, 0, 1, 0},
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{-1, 0, 0, 0},
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{ 0,-1, 0, 0},
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{ 0, 0, 0, 1},
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};
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vec4f_t offset = { 0, 0, 0, 1 };
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/*x = r_refdef.vrect.x;
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y = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height));
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w = r_refdef.vrect.width;
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h = r_refdef.vrect.height;
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qfeglViewport (x, y, w, h);*/
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mat4fquat (view, qconjf (r_refdef.viewrotation));
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mmulf (view, z_up, view);
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offset = -r_refdef.viewposition;
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offset[3] = 1;
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view[3] = mvmulf (view, offset);
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Vulkan_SetViewMatrix (ctx, view);
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}
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static void
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setup_sky (vulkan_ctx_t *ctx)
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{
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__auto_type mctx = ctx->matrix_context;
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vec4f_t q;
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mat4f_t m;
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float blend;
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mat4f_t mat;
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while (vr_data.realtime - mctx->sky_time > 1) {
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mctx->sky_rotation[0] = mctx->sky_rotation[1];
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mctx->sky_rotation[1] = qmulf (mctx->sky_velocity,
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mctx->sky_rotation[0]);
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mctx->sky_time += 1;
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}
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blend = bound (0, (vr_data.realtime - mctx->sky_time), 1);
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q = Blend (mctx->sky_rotation[0], mctx->sky_rotation[1], blend);
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q = normalf (qmulf (mctx->sky_fix, q));
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mat4fidentity (mat);
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VectorNegate (r_origin, mat[3]);
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mat4fquat (m, q);
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mmulf (mat, m, mat);
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Vulkan_SetSkyMatrix (ctx, mat);
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}
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void
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Vulkan_SetViewMatrix (vulkan_ctx_t *ctx, mat4f_t view)
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{
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__auto_type mctx = ctx->matrix_context;
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if (memcmp (mctx->matrices.View, view, sizeof (mat4f_t))) {
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memcpy (mctx->matrices.View, view, sizeof (mat4f_t));
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mctx->dirty = mctx->frames.size;
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}
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}
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void
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Vulkan_SetSkyMatrix (vulkan_ctx_t *ctx, mat4f_t sky)
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{
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__auto_type mctx = ctx->matrix_context;
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if (memcmp (mctx->matrices.Sky, sky, sizeof (mat4f_t))) {
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memcpy (mctx->matrices.Sky, sky, sizeof (mat4f_t));
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mctx->dirty = mctx->frames.size;
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}
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}
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void
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Vulkan_Matrix_Draw (qfv_renderframe_t *rFrame)
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{
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vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
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qfv_device_t *device = ctx->device;
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qfv_devfuncs_t *dfunc = device->funcs;
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__auto_type mctx = ctx->matrix_context;
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__auto_type mframe = &mctx->frames.a[ctx->curFrame];
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setup_view (ctx);
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setup_sky (ctx);
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if (mctx->dirty <= 0) {
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mctx->dirty = 0;
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return;
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}
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mctx->dirty--;
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qfv_packet_t *packet = QFV_PacketAcquire (mctx->stage);
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qfv_matrix_buffer_t *m = QFV_PacketExtend (packet, sizeof (*m));
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*m = mctx->matrices;
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qfv_bufferbarrier_t bb = bufferBarriers[qfv_BB_Unknown_to_TransferWrite]; bb.barrier.buffer = mframe->buffer;
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bb.barrier.size = packet->length;
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dfunc->vkCmdPipelineBarrier (packet->cmd, bb.srcStages, bb.dstStages,
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0, 0, 0, 1, &bb.barrier, 0, 0);
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VkBufferCopy copy_region = { packet->offset, 0, packet->length };
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dfunc->vkCmdCopyBuffer (packet->cmd, mctx->stage->buffer,
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mframe->buffer, 1, ©_region);
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bb = bufferBarriers[qfv_LT_TransferDst_to_ShaderReadOnly];
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bb.barrier.buffer = mframe->buffer;
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bb.barrier.size = packet->length;
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dfunc->vkCmdPipelineBarrier (packet->cmd, bb.srcStages, bb.dstStages,
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0, 0, 0, 1, &bb.barrier, 0, 0);
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QFV_PacketSubmit (packet);
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}
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void
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Vulkan_CalcProjectionMatrices (vulkan_ctx_t *ctx)
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{
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__auto_type mctx = ctx->matrix_context;
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__auto_type mat = &mctx->matrices;
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int width = vid.conview->xlen;
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int height = vid.conview->ylen;
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QFV_Orthographic (mat->Projection2d, 0, width, 0, height, 0, 99999);
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float aspect = (float) r_refdef.vrect.width / r_refdef.vrect.height;
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QFV_Perspective (mat->Projection3d, r_refdef.fov_y, aspect);
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#if 0
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Sys_MaskPrintf (SYS_vulkan, "ortho:\n");
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Sys_MaskPrintf (SYS_vulkan, " [[%g, %g, %g, %g],\n",
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QuatExpand (mat->Projection2d + 0));
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Sys_MaskPrintf (SYS_vulkan, " [%g, %g, %g, %g],\n",
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QuatExpand (mat->Projection2d + 4));
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Sys_MaskPrintf (SYS_vulkan, " [%g, %g, %g, %g],\n",
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QuatExpand (mat->Projection2d + 8));
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Sys_MaskPrintf (SYS_vulkan, " [%g, %g, %g, %g]]\n",
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QuatExpand (mat->Projection2d + 12));
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Sys_MaskPrintf (SYS_vulkan, "presp:\n");
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Sys_MaskPrintf (SYS_vulkan, " [[%g, %g, %g, %g],\n",
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QuatExpand (mat->Projection3d + 0));
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Sys_MaskPrintf (SYS_vulkan, " [%g, %g, %g, %g],\n",
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QuatExpand (mat->Projection3d + 4));
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Sys_MaskPrintf (SYS_vulkan, " [%g, %g, %g, %g],\n",
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QuatExpand (mat->Projection3d + 8));
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Sys_MaskPrintf (SYS_vulkan, " [%g, %g, %g, %g]]\n",
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QuatExpand (mat->Projection3d + 12));
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#endif
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mctx->dirty = mctx->frames.size;
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}
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void
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Vulkan_Matrix_Init (vulkan_ctx_t *ctx)
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{
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qfvPushDebug (ctx, "matrix init");
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qfv_device_t *device = ctx->device;
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qfv_devfuncs_t *dfunc = device->funcs;
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matrixctx_t *mctx = calloc (1, sizeof (matrixctx_t));
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ctx->matrix_context = mctx;
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size_t frames = ctx->frames.size;
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DARRAY_INIT (&mctx->frames, frames);
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DARRAY_RESIZE (&mctx->frames, frames);
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mctx->frames.grow = 0;
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//__auto_type cmdBuffers = QFV_AllocCommandBufferSet (frames, alloca);
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//QFV_AllocateCommandBuffers (device, ctx->cmdpool, 1, cmdBuffers);
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mctx->pool = Vulkan_CreateDescriptorPool (ctx, "matrix_pool");
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mctx->setLayout = Vulkan_CreateDescriptorSetLayout (ctx, "matrix_set");
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__auto_type layouts = QFV_AllocDescriptorSetLayoutSet (frames, alloca);
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for (size_t i = 0; i < layouts->size; i++) {
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layouts->a[i] = mctx->setLayout;
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}
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for (size_t i = 0; i < frames; i++) {
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__auto_type mframe = &mctx->frames.a[i];
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//mframe->cmd = cmdBuffers->a[i];
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mframe->buffer = QFV_CreateBuffer (device, sizeof (qfv_matrix_buffer_t),
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VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT
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| VK_BUFFER_USAGE_TRANSFER_DST_BIT);
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QFV_duSetObjectName (device, VK_OBJECT_TYPE_BUFFER,
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mframe->buffer, va (ctx->va_ctx,
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"buffer:matrices:%zd", i));
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}
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VkMemoryRequirements req;
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//offset = (offset + req.alignment - 1) & ~(req.alignment - 1);
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dfunc->vkGetBufferMemoryRequirements (device->dev,
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mctx->frames.a[0].buffer, &req);
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mctx->memory = QFV_AllocBufferMemory (device, mctx->frames.a[0].buffer,
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VK_MEMORY_PROPERTY_HOST_CACHED_BIT,
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frames * req.size, 0);
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QFV_duSetObjectName (device, VK_OBJECT_TYPE_DEVICE_MEMORY,
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mctx->memory, "memory:matrices");
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__auto_type sets = QFV_AllocateDescriptorSet (device, mctx->pool, layouts);
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for (size_t i = 0; i < frames; i++) {
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__auto_type mframe = &mctx->frames.a[i];
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QFV_BindBufferMemory (device, mframe->buffer, mctx->memory,
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i * req.size);
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mframe->descriptors = sets->a[i];
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VkDescriptorBufferInfo bufferInfo = {
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mframe->buffer, 0, VK_WHOLE_SIZE
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};
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VkWriteDescriptorSet write[] = {
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{ VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, 0,
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mframe->descriptors, 0, 0, 1,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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0, &bufferInfo, 0 },
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};
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dfunc->vkUpdateDescriptorSets (device->dev, 1, write, 0, 0);
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}
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free (sets);
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mctx->sky_fix = (vec4f_t) { 0, 0, 1, 1 } * sqrtf (0.5);
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mctx->sky_rotation[0] = (vec4f_t) { 0, 0, 0, 1};
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mctx->sky_rotation[1] = mctx->sky_rotation[0];
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mctx->sky_velocity = (vec4f_t) { };
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mctx->sky_velocity = qexpf (mctx->sky_velocity);
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mctx->sky_time = vr_data.realtime;
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mat4fidentity (mctx->matrices.Projection3d);
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mat4fidentity (mctx->matrices.View);
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mat4fidentity (mctx->matrices.Sky);
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mat4fidentity (mctx->matrices.Projection2d);
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mctx->dirty = mctx->frames.size;
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mctx->stage = QFV_CreateStagingBuffer (device, "matrix",
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frames * sizeof (qfv_matrix_buffer_t),
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ctx->cmdpool);
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qfvPopDebug (ctx);
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}
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void
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Vulkan_Matrix_Shutdown (vulkan_ctx_t *ctx)
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{
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qfvPushDebug (ctx, "matrix shutdown");
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qfv_device_t *device = ctx->device;
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qfv_devfuncs_t *dfunc = device->funcs;
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__auto_type mctx = ctx->matrix_context;
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QFV_DestroyStagingBuffer (mctx->stage);
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for (size_t i = 0; i < mctx->frames.size; i++) {
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__auto_type mframe = &mctx->frames.a[i];
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dfunc->vkDestroyBuffer (device->dev, mframe->buffer, 0);
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}
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dfunc->vkFreeMemory (device->dev, mctx->memory, 0);
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qfvPopDebug (ctx);
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}
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VkDescriptorSet
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Vulkan_Matrix_Descriptors (vulkan_ctx_t *ctx, int frame)
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{
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__auto_type mctx = ctx->matrix_context;
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return mctx->frames.a[frame].descriptors;
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}
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