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rt: add staging buffer for light grid, fix #368

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Ivan 'provod' Avdeev 2022-08-07 10:14:52 -07:00 committed by Ivan Avdeev
parent 1d25b718dd
commit 1d2e763baf
1 changed files with 38 additions and 10 deletions
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48
ref_vk/vk_light.c
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@ -51,7 +51,7 @@ static struct {
vk_emissive_texture_t emissive_textures[MAX_TEXTURES];
} map;
// TODO vk_buffer_t staging;
vk_buffer_t staging;
vk_buffer_t buffer;
} g_lights_;
@ -77,8 +77,14 @@ qboolean VK_LightsInit( void ) {
gEngine.Cmd_AddCommand("vk_lights_dump", debugDumpLights, "Dump all light sources for next frame");
if (!VK_BufferCreate("rt lights buffer", &g_lights_.buffer, sizeof(struct Lights),
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT /* | VK_BUFFER_USAGE_TRANSFER_DST_BIT */,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT | VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT)) {
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT)) {
// FIXME complain, handle
return false;
}
if (!VK_BufferCreate("rt lights staging buffer", &g_lights_.staging, sizeof(struct Lights),
VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT)) {
// FIXME complain, handle
return false;
}
@ -89,6 +95,7 @@ qboolean VK_LightsInit( void ) {
static void clusterBitMapShutdown( void );
void VK_LightsShutdown( void ) {
VK_BufferDestroy(&g_lights_.staging);
VK_BufferDestroy(&g_lights_.buffer);
gEngine.Cmd_RemoveCommand("vk_lights_dump");
@ -1142,10 +1149,7 @@ int RT_LightAddPolygon(const rt_light_add_polygon_t *addpoly) {
}
}
static void uploadGrid( void ) {
struct Lights *lights = g_lights_.buffer.mapped;
vk_ray_shader_light_grid_t *grid = &lights->grid;
static void uploadGrid( vk_ray_shader_light_grid_t *grid ) {
ASSERT(g_lights.map.grid_cells <= MAX_LIGHT_CLUSTERS);
VectorCopy(g_lights.map.grid_min_cell, grid->min_cell);
@ -1163,10 +1167,8 @@ static void uploadGrid( void ) {
}
vk_lights_bindings_t VK_LightsUpload( VkCommandBuffer cmdbuf ) {
uploadGrid();
// Upload polygon lights
struct Lights *lights = g_lights_.buffer.mapped;
struct Lights *lights = g_lights_.staging.mapped;
struct LightsMetadata *metadata = &lights->metadata;
ASSERT(g_lights.num_polygons <= MAX_EMISSIVE_KUSOCHKI);
@ -1207,12 +1209,38 @@ vk_lights_bindings_t VK_LightsUpload( VkCommandBuffer cmdbuf ) {
dst->environment = !!(src->flags & LightFlag_Environment);
}
uploadGrid( &lights->grid );
// TODO static assert
ASSERT(sizeof(metadata->polygon_vertices) >= sizeof(g_lights.polygon_vertices));
for (int i = 0; i < g_lights.num_polygon_vertices; ++i) {
VectorCopy(g_lights.polygon_vertices[i], metadata->polygon_vertices[i]);
}
{
const VkBufferCopy regions[] = {
{
.srcOffset = 0,
.dstOffset = 0,
.size = sizeof(struct Lights),
},
};
vkCmdCopyBuffer(cmdbuf, g_lights_.staging.buffer, g_lights_.buffer.buffer, COUNTOF(regions), regions);
const VkBufferMemoryBarrier bmb[] = {{
.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
.dstAccessMask = VK_ACCESS_SHADER_READ_BIT,
.buffer = g_lights_.buffer.buffer,
.offset = 0,
.size = VK_WHOLE_SIZE,
}};
vkCmdPipelineBarrier(cmdbuf,
VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_PIPELINE_STAGE_RAY_TRACING_SHADER_BIT_KHR,
0, 0, NULL, ARRAYSIZE(bmb), bmb, 0, NULL);
}
return (vk_lights_bindings_t){
.buffer = g_lights_.buffer.buffer,
.metadata = {