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quakeforge/libs/video/renderer/vulkan/vulkan_iqm.c
Bill Currie bbca22c722 [vulkan] Add support for IQM models 
Despite the base IQM specification not supporting blend-shapes, I think
IQM will become the basis for QF's generic model representation (at
least for the more advanced renderers). After my experience with .mu
models (KSP) and unity mesh objects (both normal and skinned), and
reviewing the IQM spec, it looks like with the addition of support for
blend-shapes, IQM is actually pretty good.

This is just the preliminary work to get standard IQM models loading in
vulkan (seems to work, along with unloading), and they very basics into
the renderer (most likely not working: not tested yet). The rest of the
renderer seems to be unaffected, though, which is good.
2022-05-04 14:07:27 +09:00

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/*
vulkan_iqm.c
Vulkan IQM model pipeline
Copyright (C) 2022 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2022/5/3
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
#include <string.h>
#include "QF/cvar.h"
#include "QF/va.h"
#include "QF/scene/entity.h"
#include "QF/Vulkan/qf_iqm.h"
#include "QF/Vulkan/qf_matrices.h"
#include "QF/Vulkan/qf_texture.h"
#include "QF/Vulkan/debug.h"
#include "QF/Vulkan/device.h"
#include "QF/Vulkan/instance.h"
#include "QF/Vulkan/renderpass.h"
#include "r_internal.h"
#include "vid_vulkan.h"
typedef struct {
mat4f_t mat;
float blend;
byte colorA[4];
byte colorB[4];
vec4f_t base_color;
vec4f_t fog;
} iqm_push_constants_t;
static const char * __attribute__((used)) iqm_pass_names[] = {
"depth",
"g-buffer",
"translucent",
};
static QFV_Subpass subpass_map[] = {
QFV_passDepth, // QFV_iqmDepth
QFV_passGBuffer, // QFV_iqmGBuffer
QFV_passTranslucent, // QFV_iqmTranslucent
};
static void
emit_commands (VkCommandBuffer cmd, int pose1, int pose2,
qfv_iqm_skin_t **skins,
uint32_t numPC, qfv_push_constants_t *constants,
iqm_t *iqm, qfv_renderframe_t *rFrame)
{
vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
iqmctx_t *ictx = ctx->iqm_context;
__auto_type mesh = (qfv_iqm_t *) iqm->extra_data;
VkDeviceSize offsets[] = { 0, 0, };
VkBuffer buffers[] = {
mesh->geom_buffer,
mesh->rend_buffer,
};
int bindingCount = skins ? 2 : 1;
dfunc->vkCmdBindVertexBuffers (cmd, 0, bindingCount, buffers, offsets);
dfunc->vkCmdBindIndexBuffer (cmd, mesh->index_buffer, 0,
VK_INDEX_TYPE_UINT32);
QFV_PushConstants (device, cmd, ictx->layout, numPC, constants);
for (int i = 0; i < iqm->num_meshes; i++) {
if (skins) {
VkDescriptorSet sets[] = {
skins[i]->descriptor,
};
dfunc->vkCmdBindDescriptorSets (cmd,
VK_PIPELINE_BIND_POINT_GRAPHICS,
ictx->layout, 1, 1, sets, 0, 0);
}
dfunc->vkCmdDrawIndexed (cmd, 3 * iqm->meshes[i].num_triangles, 1,
3 * iqm->meshes[i].first_triangle, 0, 0);
}
}
void
Vulkan_DrawIQM (entity_t *ent, qfv_renderframe_t *rFrame)
{
vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
iqmctx_t *ictx = ctx->iqm_context;
iqm_frame_t *aframe = &ictx->frames.a[ctx->curFrame];
model_t *model = ent->renderer.model;
iqm_t *iqm = (iqm_t *) model->aliashdr;
qfv_iqm_t *mesh = iqm->extra_data;
qfv_iqm_skin_t **skins = &mesh->skins;
iqm_push_constants_t constants = {};
constants.blend = R_IQMGetLerpedFrames (ent, iqm);
qfv_push_constants_t push_constants[] = {
{ VK_SHADER_STAGE_VERTEX_BIT,
field_offset (iqm_push_constants_t, mat),
sizeof (mat4f_t), Transform_GetWorldMatrixPtr (ent->transform) },
{ VK_SHADER_STAGE_VERTEX_BIT,
field_offset (iqm_push_constants_t, blend),
sizeof (float), &constants.blend },
{ VK_SHADER_STAGE_FRAGMENT_BIT,
field_offset (iqm_push_constants_t, colorA),
sizeof (constants.colorA), constants.colorA },
{ VK_SHADER_STAGE_FRAGMENT_BIT,
field_offset (iqm_push_constants_t, colorB),
sizeof (constants.colorB), constants.colorB },
{ VK_SHADER_STAGE_FRAGMENT_BIT,
field_offset (iqm_push_constants_t, base_color),
sizeof (constants.base_color), &constants.base_color },
{ VK_SHADER_STAGE_FRAGMENT_BIT,
field_offset (iqm_push_constants_t, fog),
sizeof (constants.fog), &constants.fog },
};
QuatCopy (ent->renderer.colormod, constants.base_color);
QuatCopy (skins[0]->colora, constants.colorA);
QuatCopy (skins[0]->colorb, constants.colorB);
QuatZero (constants.fog);
emit_commands (aframe->cmdSet.a[QFV_iqmDepth],
ent->animation.pose1, ent->animation.pose2,
0, 2, push_constants, iqm, rFrame);
emit_commands (aframe->cmdSet.a[QFV_iqmGBuffer],
ent->animation.pose1, ent->animation.pose2,
skins, 6, push_constants, iqm, rFrame);
}
static void
alias_begin_subpass (QFV_IQMSubpass subpass, VkPipeline pipeline,
qfv_renderframe_t *rFrame)
{
vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
iqmctx_t *ictx = ctx->iqm_context;
__auto_type cframe = &ctx->frames.a[ctx->curFrame];
iqm_frame_t *aframe = &ictx->frames.a[ctx->curFrame];
VkCommandBuffer cmd = aframe->cmdSet.a[subpass];
dfunc->vkResetCommandBuffer (cmd, 0);
VkCommandBufferInheritanceInfo inherit = {
VK_STRUCTURE_TYPE_COMMAND_BUFFER_INHERITANCE_INFO, 0,
rFrame->renderpass->renderpass, subpass_map[subpass],
cframe->framebuffer,
0, 0, 0,
};
VkCommandBufferBeginInfo beginInfo = {
VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, 0,
VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT
| VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT, &inherit,
};
dfunc->vkBeginCommandBuffer (cmd, &beginInfo);
QFV_duCmdBeginLabel (device, cmd, va (ctx->va_ctx, "iqm:%s",
iqm_pass_names[subpass]),
{ 0.6, 0.5, 0, 1});
dfunc->vkCmdBindPipeline (cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
VkDescriptorSet sets[] = {
Vulkan_Matrix_Descriptors (ctx, ctx->curFrame),
};
dfunc->vkCmdBindDescriptorSets (cmd, VK_PIPELINE_BIND_POINT_GRAPHICS,
ictx->layout, 0, 1, sets, 0, 0);
dfunc->vkCmdSetViewport (cmd, 0, 1, &rFrame->renderpass->viewport);
dfunc->vkCmdSetScissor (cmd, 0, 1, &rFrame->renderpass->scissor);
//XXX glsl_Fog_GetColor (fog);
//XXX fog[3] = glsl_Fog_GetDensity () / 64.0;
}
static void
alias_end_subpass (VkCommandBuffer cmd, vulkan_ctx_t *ctx)
{
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
QFV_duCmdEndLabel (device, cmd);
dfunc->vkEndCommandBuffer (cmd);
}
void
Vulkan_IQMBegin (qfv_renderframe_t *rFrame)
{
vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
iqmctx_t *ictx = ctx->iqm_context;
iqm_frame_t *aframe = &ictx->frames.a[ctx->curFrame];
//XXX quat_t fog;
DARRAY_APPEND (&rFrame->subpassCmdSets[QFV_passDepth],
aframe->cmdSet.a[QFV_iqmDepth]);
DARRAY_APPEND (&rFrame->subpassCmdSets[QFV_passGBuffer],
aframe->cmdSet.a[QFV_iqmGBuffer]);
alias_begin_subpass (QFV_iqmDepth, ictx->depth, rFrame);
alias_begin_subpass (QFV_iqmGBuffer, ictx->gbuf, rFrame);
}
void
Vulkan_IQMEnd (qfv_renderframe_t *rFrame)
{
vulkan_ctx_t *ctx = rFrame->vulkan_ctx;
iqmctx_t *ictx = ctx->iqm_context;
iqm_frame_t *aframe = &ictx->frames.a[ctx->curFrame];
alias_end_subpass (aframe->cmdSet.a[QFV_iqmDepth], ctx);
alias_end_subpass (aframe->cmdSet.a[QFV_iqmGBuffer], ctx);
}
void
Vulkan_IQMAddSkin (vulkan_ctx_t *ctx, qfv_iqm_skin_t *skin)
{
iqmctx_t *ictx = ctx->iqm_context;
skin->descriptor = Vulkan_CreateCombinedImageSampler (ctx, skin->view,
ictx->sampler);
}
void
Vulkan_IQMRemoveSkin (vulkan_ctx_t *ctx, qfv_iqm_skin_t *skin)
{
Vulkan_FreeTexture (ctx, skin->descriptor);
skin->descriptor = 0;
}
void
Vulkan_IQM_Init (vulkan_ctx_t *ctx)
{
qfv_device_t *device = ctx->device;
qfvPushDebug (ctx, "iqm init");
iqmctx_t *ictx = calloc (1, sizeof (iqmctx_t));
ctx->iqm_context = ictx;
size_t frames = ctx->frames.size;
DARRAY_INIT (&ictx->frames, frames);
DARRAY_RESIZE (&ictx->frames, frames);
ictx->frames.grow = 0;
ictx->depth = Vulkan_CreateGraphicsPipeline (ctx, "alias_depth");
ictx->gbuf = Vulkan_CreateGraphicsPipeline (ctx, "alias_gbuf");
ictx->layout = Vulkan_CreatePipelineLayout (ctx, "alias_layout");
ictx->sampler = Vulkan_CreateSampler (ctx, "alias_sampler");
for (size_t i = 0; i < frames; i++) {
__auto_type aframe = &ictx->frames.a[i];
DARRAY_INIT (&aframe->cmdSet, QFV_iqmNumPasses);
DARRAY_RESIZE (&aframe->cmdSet, QFV_iqmNumPasses);
aframe->cmdSet.grow = 0;
QFV_AllocateCommandBuffers (device, ctx->cmdpool, 1, &aframe->cmdSet);
for (int j = 0; j < QFV_iqmNumPasses; j++) {
QFV_duSetObjectName (device, VK_OBJECT_TYPE_COMMAND_BUFFER,
aframe->cmdSet.a[j],
va (ctx->va_ctx, "cmd:iqm:%zd:%s", i,
iqm_pass_names[j]));
}
}
qfvPopDebug (ctx);
}
void
Vulkan_IQM_Shutdown (vulkan_ctx_t *ctx)
{
qfv_device_t *device = ctx->device;
qfv_devfuncs_t *dfunc = device->funcs;
iqmctx_t *ictx = ctx->iqm_context;
for (size_t i = 0; i < ictx->frames.size; i++) {
__auto_type aframe = &ictx->frames.a[i];
free (aframe->cmdSet.a);
}
dfunc->vkDestroyPipeline (device->dev, ictx->depth, 0);
dfunc->vkDestroyPipeline (device->dev, ictx->gbuf, 0);
free (ictx->frames.a);
free (ictx);
}
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