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test/source/blender/draw/tests/eevee_test.cc
Clément Foucault a0f5240089 EEVEE-Next: Virtual Shadow Map initial implementation 
Implements virtual shadow mapping for EEVEE-Next primary shadow solution.
This technique aims to deliver really high precision shadowing for many
lights while keeping a relatively low cost.

The technique works by splitting each shadows in tiles that are only
allocated & updated on demand by visible surfaces and volumes.
Local lights use cubemap projection with mipmap level of detail to adapt
the resolution to the receiver distance.
Sun lights use clipmap distribution or cascade distribution (depending on
which is better) for selecting the level of detail with the distance to
the camera.

Current maximum shadow precision for local light is about 1 pixel per 0.01
degrees.
For sun light, the maximum resolution is based on the camera far clip
distance which sets the most coarse clipmap.

## Limitation:
Alpha Blended surfaces might not get correct shadowing in some corner
casses. This is to be fixed in another commit.
While resolution is greatly increase, it is still finite. It is virtually
equivalent to one 8K shadow per shadow cube face and per clipmap level.
There is no filtering present for now.

## Parameters:
Shadow Pool Size: In bytes, amount of GPU memory to dedicate to the
shadow pool (is allocated per viewport).
Shadow Scaling: Scale the shadow resolution. Base resolution should
target subpixel accuracy (within the limitation of the technique).

Related to #93220
Related to #104472
2023-02-08 21:18:44 +01:00

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/* SPDX-License-Identifier: Apache-2.0 */
#include "testing/testing.h"
#include "BKE_context.h"
#include "BKE_idtype.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BKE_object.h"
#include "DEG_depsgraph.h"
#include "RNA_define.h"
#include "GPU_batch.h"
#include "draw_shader.h"
#include "draw_testing.hh"
#include "engines/eevee_next/eevee_instance.hh"
namespace blender::draw {
using namespace blender::eevee;
/* Replace with template version that is not GPU only. */
using ShadowPageCacheBuf = draw::StorageArrayBuffer<uint2, SHADOW_MAX_PAGE, false>;
using ShadowTileDataBuf = draw::StorageArrayBuffer<ShadowTileDataPacked, SHADOW_MAX_TILE, false>;
static void test_eevee_shadow_shift_clear()
{
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
int tiles_index = 1;
int tile_lod0 = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 5;
int tile_lod1 = tile_lod0 + square_i(SHADOW_TILEMAP_RES);
{
ShadowTileMapData tilemap = {};
tilemap.tiles_index = tiles_index * SHADOW_TILEDATA_PER_TILEMAP;
tilemap.grid_shift = int2(SHADOW_TILEMAP_RES);
tilemap.projection_type = SHADOW_PROJECTION_CUBEFACE;
tilemaps_data.append(tilemap);
tilemaps_data.push_update();
}
{
ShadowTileData tile;
tile.page = uint2(1, 2);
tile.is_used = true;
tile.do_update = true;
tiles_data[tile_lod0] = shadow_tile_pack(tile);
tile.page = uint2(3, 4);
tile.is_used = false;
tile.do_update = false;
tiles_data[tile_lod1] = shadow_tile_pack(tile);
tiles_data.push_update();
}
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_tilemap_init");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.dispatch(int3(1, 1, tilemaps_data.size()));
Manager manager;
manager.submit(pass);
GPU_finish();
tilemaps_data.read();
tiles_data.read();
EXPECT_EQ(tilemaps_data[0].grid_offset, int2(0));
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_lod0]).page, uint2(1, 2));
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_lod0]).is_used, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_lod0]).do_update, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_lod1]).page, uint2(3, 4));
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_lod1]).is_used, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_lod1]).do_update, true);
GPU_shader_free(sh);
DRW_shaders_free();
}
DRAW_TEST(eevee_shadow_shift_clear)
static void test_eevee_shadow_shift()
{
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
{
ShadowTileMapData tilemap = {};
tilemap.tiles_index = 0;
tilemap.clip_data_index = 0;
tilemap.grid_shift = int2(-1, 2);
tilemap.projection_type = SHADOW_PROJECTION_CLIPMAP;
tilemaps_data.append(tilemap);
tilemaps_data.push_update();
}
{
ShadowTileData tile = shadow_tile_unpack(ShadowTileDataPacked(SHADOW_NO_DATA));
for (auto x : IndexRange(SHADOW_TILEMAP_RES)) {
for (auto y : IndexRange(SHADOW_TILEMAP_RES)) {
tile.is_allocated = true;
tile.is_rendered = true;
tile.do_update = true;
tile.page = uint2(x, y);
tiles_data[x + y * SHADOW_TILEMAP_RES] = shadow_tile_pack(tile);
}
}
tiles_data.push_update();
}
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_tilemap_init");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.dispatch(int3(1, 1, tilemaps_data.size()));
Manager manager;
manager.submit(pass);
GPU_finish();
tilemaps_data.read();
tiles_data.read();
EXPECT_EQ(tilemaps_data[0].grid_offset, int2(0));
EXPECT_EQ(shadow_tile_unpack(tiles_data[0]).page, uint2(SHADOW_TILEMAP_RES - 1, 2));
EXPECT_EQ(shadow_tile_unpack(tiles_data[0]).do_update, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[0]).is_rendered, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[0]).is_allocated, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[1]).page, uint2(0, 2));
EXPECT_EQ(shadow_tile_unpack(tiles_data[1]).do_update, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[1]).is_rendered, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[1]).is_allocated, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[0 + SHADOW_TILEMAP_RES * 2]).page,
uint2(SHADOW_TILEMAP_RES - 1, 4));
EXPECT_EQ(shadow_tile_unpack(tiles_data[0 + SHADOW_TILEMAP_RES * 2]).do_update, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[0 + SHADOW_TILEMAP_RES * 2]).is_rendered, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[0 + SHADOW_TILEMAP_RES * 2]).is_allocated, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[1 + SHADOW_TILEMAP_RES * 2]).page, uint2(0, 4));
EXPECT_EQ(shadow_tile_unpack(tiles_data[1 + SHADOW_TILEMAP_RES * 2]).do_update, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[1 + SHADOW_TILEMAP_RES * 2]).is_rendered, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[1 + SHADOW_TILEMAP_RES * 2]).is_allocated, true);
GPU_shader_free(sh);
DRW_shaders_free();
}
DRAW_TEST(eevee_shadow_shift)
static void test_eevee_shadow_tag_update()
{
using namespace blender::math;
StorageVectorBuffer<uint, 128> past_casters_updated = {"PastCastersUpdated"};
StorageVectorBuffer<uint, 128> curr_casters_updated = {"CurrCastersUpdated"};
Manager manager;
{
/* Simulate 1 object moving and 1 object static with changing resource index. */
float4x4 obmat = float4x4::identity();
float4x4 obmat2 = from_loc_rot_scale<float4x4>(
float3(1.0f), Quaternion::identity(), float3(0.5f));
float3 half_extent = float3(0.24f, 0.249f, 0.001f);
{
manager.begin_sync();
ResourceHandle hdl = manager.resource_handle(obmat, float3(0.5f, 0.5f, -1.0f), half_extent);
manager.resource_handle(obmat2);
manager.end_sync();
past_casters_updated.append(hdl.resource_index());
past_casters_updated.push_update();
}
{
manager.begin_sync();
manager.resource_handle(obmat2);
ResourceHandle hdl = manager.resource_handle(obmat, float3(-1.0f, 0.5f, -1.0f), half_extent);
manager.end_sync();
curr_casters_updated.append(hdl.resource_index());
curr_casters_updated.push_update();
}
}
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
tiles_data.clear_to_zero();
{
ShadowTileMap tilemap(0 * SHADOW_TILEDATA_PER_TILEMAP);
tilemap.sync_cubeface(float4x4::identity(), 0.01f, 1.0f, Z_NEG, 0.0f);
tilemaps_data.append(tilemap);
}
{
ShadowTileMap tilemap(1 * SHADOW_TILEDATA_PER_TILEMAP);
tilemap.sync_orthographic(float4x4::identity(), int2(0), 1, 0.0f, SHADOW_PROJECTION_CLIPMAP);
tilemaps_data.append(tilemap);
}
tilemaps_data.push_update();
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_tag_update");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.bind_ssbo("bounds_buf", &manager.bounds_buf.previous());
pass.bind_ssbo("resource_ids_buf", past_casters_updated);
pass.dispatch(int3(past_casters_updated.size(), 1, tilemaps_data.size()));
pass.bind_ssbo("bounds_buf", &manager.bounds_buf.current());
pass.bind_ssbo("resource_ids_buf", curr_casters_updated);
pass.dispatch(int3(curr_casters_updated.size(), 1, tilemaps_data.size()));
manager.submit(pass);
GPU_finish();
tiles_data.read();
/** The layout of these expected strings is Y down. */
StringRefNull expected_lod0 =
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"xxxx----------------xxxxxxxx----"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------";
StringRefNull expected_lod1 =
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"xx--------xxxx--"
"xx--------xxxx--"
"xx--------xxxx--"
"xx--------xxxx--"
"----------------"
"----------------";
StringRefNull expected_lod2 =
"--------"
"--------"
"--------"
"--------"
"--------"
"x----xx-"
"x----xx-"
"--------";
StringRefNull expected_lod3 =
"----"
"----"
"x-xx"
"x-xx";
StringRefNull expected_lod4 =
"--"
"xx";
StringRefNull expected_lod5 = "x";
const uint lod0_len = SHADOW_TILEMAP_LOD0_LEN;
const uint lod1_len = SHADOW_TILEMAP_LOD1_LEN;
const uint lod2_len = SHADOW_TILEMAP_LOD2_LEN;
const uint lod3_len = SHADOW_TILEMAP_LOD3_LEN;
const uint lod4_len = SHADOW_TILEMAP_LOD4_LEN;
const uint lod5_len = SHADOW_TILEMAP_LOD5_LEN;
auto stringify_result = [&](uint start, uint len) -> std::string {
std::string result = "";
for (auto i : IndexRange(start, len)) {
result += (shadow_tile_unpack(tiles_data[i]).do_update) ? "x" : "-";
}
return result;
};
EXPECT_EQ(stringify_result(0, lod0_len), expected_lod0);
EXPECT_EQ(stringify_result(lod0_len, lod1_len), expected_lod1);
EXPECT_EQ(stringify_result(lod0_len + lod1_len, lod2_len), expected_lod2);
EXPECT_EQ(stringify_result(lod0_len + lod1_len + lod2_len, lod3_len), expected_lod3);
EXPECT_EQ(stringify_result(lod0_len + lod1_len + lod2_len + lod3_len, lod4_len), expected_lod4);
EXPECT_EQ(stringify_result(lod0_len + lod1_len + lod2_len + lod3_len + lod4_len, lod5_len),
expected_lod5);
GPU_shader_free(sh);
DRW_shaders_free();
}
DRAW_TEST(eevee_shadow_tag_update)
static void test_eevee_shadow_free()
{
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
ShadowPageHeapBuf pages_free_data = {"PagesFreeBuf"};
ShadowPageCacheBuf pages_cached_data = {"PagesCachedBuf"};
ShadowPagesInfoDataBuf pages_infos_data = {"PagesInfosBuf"};
int tiles_index = 1;
int tile_orphaned_cached = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 5;
int tile_orphaned_allocated = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 6;
int tile_used_cached = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 260;
int tile_used_allocated = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 32;
int tile_used_unallocated = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 64;
int tile_unused_cached = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 9;
int tile_unused_allocated = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 8;
int page_free_count = SHADOW_MAX_PAGE - 6;
for (uint i : IndexRange(2, page_free_count)) {
uint2 page = {i % SHADOW_PAGE_PER_ROW, i / SHADOW_PAGE_PER_ROW};
pages_free_data[i] = page.x | (page.y << 16u);
}
pages_free_data.push_update();
pages_infos_data.page_free_count = page_free_count;
pages_infos_data.page_alloc_count = 0;
pages_infos_data.page_cached_next = 2u;
pages_infos_data.page_cached_start = 0u;
pages_infos_data.page_cached_end = 2u;
pages_infos_data.push_update();
for (uint i : IndexRange(pages_cached_data.size())) {
pages_cached_data[i] = uint2(-1, -1);
}
pages_cached_data[0] = uint2(0, tile_orphaned_cached);
pages_cached_data[1] = uint2(1, tile_used_cached);
pages_cached_data.push_update();
{
ShadowTileData tile;
/* is_orphaned = true */
tile.is_used = false;
tile.do_update = true;
tile.is_cached = true;
tile.is_allocated = false;
tiles_data[tile_orphaned_cached] = shadow_tile_pack(tile);
tile.is_cached = false;
tile.is_allocated = true;
tiles_data[tile_orphaned_allocated] = shadow_tile_pack(tile);
/* is_orphaned = false */
tile.do_update = false;
tile.is_used = true;
tile.is_cached = true;
tile.is_allocated = false;
tiles_data[tile_used_cached] = shadow_tile_pack(tile);
tile.is_cached = false;
tile.is_allocated = true;
tiles_data[tile_used_allocated] = shadow_tile_pack(tile);
tile.is_cached = false;
tile.is_allocated = false;
tiles_data[tile_used_unallocated] = shadow_tile_pack(tile);
tile.is_used = false;
tile.is_cached = true;
tile.is_allocated = false;
tiles_data[tile_unused_cached] = shadow_tile_pack(tile);
tile.is_cached = false;
tile.is_allocated = true;
tiles_data[tile_unused_allocated] = shadow_tile_pack(tile);
tiles_data.push_update();
}
{
ShadowTileMapData tilemap = {};
tilemap.tiles_index = tiles_index * SHADOW_TILEDATA_PER_TILEMAP;
tilemaps_data.append(tilemap);
tilemaps_data.push_update();
}
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_page_free");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.bind_ssbo("pages_infos_buf", pages_infos_data);
pass.bind_ssbo("pages_free_buf", pages_free_data);
pass.bind_ssbo("pages_cached_buf", pages_cached_data);
pass.dispatch(int3(1, 1, tilemaps_data.size()));
Manager manager;
manager.submit(pass);
GPU_finish();
tiles_data.read();
pages_infos_data.read();
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_orphaned_cached]).is_cached, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_orphaned_cached]).is_allocated, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_orphaned_allocated]).is_cached, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_orphaned_allocated]).is_allocated, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_used_cached]).is_cached, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_used_cached]).is_allocated, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_used_allocated]).is_cached, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_used_allocated]).is_allocated, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_used_unallocated]).is_cached, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_used_unallocated]).is_allocated, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_unused_cached]).is_cached, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_unused_cached]).is_allocated, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_unused_allocated]).is_cached, true);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_unused_allocated]).is_allocated, false);
EXPECT_EQ(pages_infos_data.page_alloc_count, 1);
EXPECT_EQ(pages_infos_data.page_free_count, page_free_count + 2);
EXPECT_EQ(pages_infos_data.page_cached_next, 3);
EXPECT_EQ(pages_infos_data.page_cached_end, 2);
GPU_shader_free(sh);
DRW_shaders_free();
}
DRAW_TEST(eevee_shadow_free)
class TestDefrag {
private:
ShadowTileDataBuf tiles_data = {"tiles_data"};
ShadowPageHeapBuf pages_free_data = {"PagesFreeBuf"};
ShadowPageCacheBuf pages_cached_data = {"PagesCachedBuf"};
ShadowPagesInfoDataBuf pages_infos_data = {"PagesInfosBuf"};
public:
TestDefrag(int allocation_count,
int descriptor_offset,
StringRefNull descriptor,
StringRefNull expect)
{
for (uint i : IndexRange(SHADOW_MAX_PAGE)) {
uint2 page = {i % SHADOW_PAGE_PER_ROW, i / SHADOW_PAGE_PER_ROW};
pages_free_data[i] = page.x | (page.y << 16u);
}
for (uint i : IndexRange(tiles_data.size())) {
tiles_data[i] = 0;
}
int free_count = SHADOW_MAX_PAGE;
int tile_index = 0;
for (uint i : IndexRange(pages_cached_data.size())) {
pages_cached_data[i] = uint2(-1, -1);
}
int cached_index = descriptor_offset;
int hole_count = 0;
int inserted_count = 0;
ShadowTileData tile = {};
tile.is_cached = true;
for (char c : descriptor) {
switch (c) {
case 'c':
tile.cache_index = cached_index++ % SHADOW_MAX_PAGE;
pages_cached_data[tile.cache_index] = uint2(pages_free_data[--free_count], tile_index);
tiles_data[tile_index++] = shadow_tile_pack(tile);
break;
case 'f':
pages_cached_data[cached_index++ % SHADOW_MAX_PAGE] = uint2(-1, -1);
hole_count++;
break;
case 'i':
tile.cache_index = (cached_index + inserted_count++) % SHADOW_MAX_PAGE;
pages_cached_data[tile.cache_index] = uint2(pages_free_data[--free_count], tile_index);
tiles_data[tile_index++] = shadow_tile_pack(tile);
break;
default:
break;
}
}
pages_infos_data.page_alloc_count = allocation_count;
pages_infos_data.page_cached_next = cached_index + inserted_count;
pages_infos_data.page_free_count = free_count;
pages_infos_data.page_cached_start = descriptor_offset;
pages_infos_data.page_cached_end = cached_index;
tiles_data.push_update();
pages_infos_data.push_update();
pages_free_data.push_update();
pages_cached_data.push_update();
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_page_defrag");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.bind_ssbo("pages_infos_buf", pages_infos_data);
pass.bind_ssbo("pages_free_buf", pages_free_data);
pass.bind_ssbo("pages_cached_buf", pages_cached_data);
pass.dispatch(int3(1, 1, 1));
Manager manager;
manager.submit(pass);
GPU_finish();
tiles_data.read();
pages_cached_data.read();
pages_infos_data.read();
std::string result = "";
int expect_cached_len = 0;
for (auto i : IndexRange(descriptor_offset, descriptor.size())) {
if (pages_cached_data[i % SHADOW_MAX_PAGE].y != -1) {
result += 'c';
expect_cached_len++;
}
else {
result += 'f';
}
}
EXPECT_EQ(expect, result);
allocation_count = min_ii(allocation_count, SHADOW_MAX_PAGE);
int additional_pages = max_ii(0, allocation_count - free_count);
int expected_free_count = max_ii(free_count, allocation_count);
int expected_start = descriptor_offset + hole_count + additional_pages;
int result_cached_len = pages_infos_data.page_cached_end - pages_infos_data.page_cached_start;
if (expected_start > SHADOW_MAX_PAGE) {
expected_start -= SHADOW_MAX_PAGE;
}
EXPECT_EQ(expected_free_count, pages_infos_data.page_free_count);
EXPECT_EQ(expected_start, pages_infos_data.page_cached_start);
EXPECT_EQ(expect_cached_len, result_cached_len);
EXPECT_EQ(pages_infos_data.page_cached_end, pages_infos_data.page_cached_next);
GPU_shader_free(sh);
DRW_shaders_free();
}
};
static void test_eevee_shadow_defrag()
{
TestDefrag(0, 0, "cfi", "fcc");
TestDefrag(0, 0, "fci", "fcc");
TestDefrag(0, 47, "ccfcffccfcfciiiii", "fffffcccccccccccc");
TestDefrag(10, SHADOW_MAX_PAGE - 5, "ccfcffccfcfciiiii", "fffffcccccccccccc");
TestDefrag(SHADOW_MAX_PAGE - 8, 30, "ccfcffccfcfciiiii", "fffffffffcccccccc");
TestDefrag(SHADOW_MAX_PAGE - 4, 30, "ccfcffccfcfciiiii", "fffffffffffffcccc");
/* Over allocation but should not crash. */
TestDefrag(SHADOW_MAX_PAGE + 4, 30, "ccfcffccfcfciiiii", "fffffffffffffffff");
}
DRAW_TEST(eevee_shadow_defrag)
class TestAlloc {
private:
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
ShadowPageHeapBuf pages_free_data = {"PagesFreeBuf"};
ShadowPageCacheBuf pages_cached_data = {"PagesCachedBuf"};
ShadowPagesInfoDataBuf pages_infos_data = {"PagesInfosBuf"};
public:
TestAlloc(int page_free_count)
{
int tiles_index = 1;
for (uint i : IndexRange(0, page_free_count)) {
uint2 page = {i % SHADOW_PAGE_PER_ROW, i / SHADOW_PAGE_PER_ROW};
pages_free_data[i] = page.x | (page.y << 16u);
}
pages_free_data.push_update();
pages_cached_data.push_update();
pages_infos_data.page_free_count = page_free_count;
pages_infos_data.page_alloc_count = 1;
pages_infos_data.page_cached_next = 0u;
pages_infos_data.page_cached_start = 0u;
pages_infos_data.page_cached_end = 0u;
pages_infos_data.view_count = 0u;
pages_infos_data.page_size = 256u;
pages_infos_data.push_update();
int tile_allocated = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 5;
int tile_free = tiles_index * SHADOW_TILEDATA_PER_TILEMAP + 6;
{
ShadowTileData tile;
tile.is_used = true;
tile.do_update = false;
tile.is_cached = false;
tile.is_allocated = false;
tiles_data[tile_free] = shadow_tile_pack(tile);
tile.is_cached = false;
tile.is_allocated = true;
tiles_data[tile_allocated] = shadow_tile_pack(tile);
tiles_data.push_update();
}
{
ShadowTileMapData tilemap = {};
tilemap.tiles_index = tiles_index * SHADOW_TILEDATA_PER_TILEMAP;
tilemaps_data.append(tilemap);
tilemaps_data.push_update();
}
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_page_allocate");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.bind_ssbo("pages_infos_buf", pages_infos_data);
pass.bind_ssbo("pages_free_buf", pages_free_data);
pass.bind_ssbo("pages_cached_buf", pages_cached_data);
pass.dispatch(int3(1, 1, tilemaps_data.size()));
Manager manager;
manager.submit(pass);
GPU_finish();
tiles_data.read();
pages_infos_data.read();
bool alloc_success = page_free_count >= 1;
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_free]).do_update, alloc_success);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_free]).is_allocated, alloc_success);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_allocated]).do_update, false);
EXPECT_EQ(shadow_tile_unpack(tiles_data[tile_allocated]).is_allocated, true);
EXPECT_EQ(pages_infos_data.page_free_count, page_free_count - 1);
GPU_shader_free(sh);
DRW_shaders_free();
}
};
static void test_eevee_shadow_alloc()
{
TestAlloc(SHADOW_MAX_PAGE);
TestAlloc(1);
TestAlloc(0);
}
DRAW_TEST(eevee_shadow_alloc)
static void test_eevee_shadow_finalize()
{
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
ShadowPageHeapBuf pages_free_data = {"PagesFreeBuf"};
ShadowPageCacheBuf pages_cached_data = {"PagesCachedBuf"};
ShadowPagesInfoDataBuf pages_infos_data = {"PagesInfosBuf"};
const uint lod0_len = SHADOW_TILEMAP_LOD0_LEN;
const uint lod1_len = SHADOW_TILEMAP_LOD1_LEN;
const uint lod2_len = SHADOW_TILEMAP_LOD2_LEN;
const uint lod3_len = SHADOW_TILEMAP_LOD3_LEN;
const uint lod4_len = SHADOW_TILEMAP_LOD4_LEN;
const uint lod0_ofs = 0;
const uint lod1_ofs = lod0_len;
const uint lod2_ofs = lod1_ofs + lod1_len;
const uint lod3_ofs = lod2_ofs + lod2_len;
const uint lod4_ofs = lod3_ofs + lod3_len;
const uint lod5_ofs = lod4_ofs + lod4_len;
for (auto i : IndexRange(SHADOW_TILEDATA_PER_TILEMAP)) {
tiles_data[i] = 0;
}
{
ShadowTileData tile;
tile.is_used = true;
tile.is_allocated = true;
tile.page = uint2(1, 0);
tile.do_update = false;
tiles_data[lod0_ofs] = shadow_tile_pack(tile);
tile.page = uint2(2, 0);
tile.do_update = false;
tiles_data[lod1_ofs] = shadow_tile_pack(tile);
tile.page = uint2(3, 0);
tile.do_update = true;
tiles_data[lod2_ofs] = shadow_tile_pack(tile);
tile.page = uint2(4, 0);
tile.do_update = false;
tiles_data[lod3_ofs] = shadow_tile_pack(tile);
tile.page = uint2(5, 0);
tile.do_update = true;
tiles_data[lod4_ofs] = shadow_tile_pack(tile);
tile.page = uint2(6, 0);
tile.do_update = true;
tiles_data[lod5_ofs] = shadow_tile_pack(tile);
tile.page = uint2(7, 0);
tile.do_update = true;
tiles_data[lod0_ofs + 8] = shadow_tile_pack(tile);
tiles_data.push_update();
}
{
ShadowTileMapData tilemap = {};
tilemap.tiles_index = 0;
tilemap.projection_type = SHADOW_PROJECTION_CUBEFACE;
tilemaps_data.append(tilemap);
tilemaps_data.push_update();
}
{
pages_infos_data.page_free_count = -5;
pages_infos_data.page_alloc_count = 0;
pages_infos_data.page_cached_next = 0u;
pages_infos_data.page_cached_start = 0u;
pages_infos_data.page_cached_end = 0u;
pages_infos_data.view_count = 0u;
pages_infos_data.page_size = 256u;
pages_infos_data.push_update();
}
Texture tilemap_tx = {"tilemap_tx"};
tilemap_tx.ensure_2d(GPU_R32UI,
int2(SHADOW_TILEMAP_RES),
GPU_TEXTURE_USAGE_HOST_READ | GPU_TEXTURE_USAGE_SHADER_READ |
GPU_TEXTURE_USAGE_SHADER_WRITE);
tilemap_tx.clear(uint4(0));
Texture render_map_tx = {"ShadowRenderMap",
GPU_R32UI,
GPU_TEXTURE_USAGE_HOST_READ | GPU_TEXTURE_USAGE_SHADER_READ |
GPU_TEXTURE_USAGE_SHADER_WRITE,
int2(SHADOW_TILEMAP_RES),
1, /* Only one layer for the test. */
nullptr,
SHADOW_TILEMAP_LOD + 1};
render_map_tx.ensure_mip_views();
View shadow_multi_view = {"ShadowMultiView", 64, true};
StorageBuffer<DispatchCommand> clear_dispatch_buf;
StorageArrayBuffer<uint, SHADOW_MAX_PAGE> clear_page_buf = {"clear_page_buf"};
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_tilemap_finalize");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.bind_ssbo("pages_infos_buf", pages_infos_data);
pass.bind_image("tilemaps_img", tilemap_tx);
pass.bind_ssbo("view_infos_buf", shadow_multi_view.matrices_ubo_get());
pass.bind_ssbo("clear_dispatch_buf", clear_dispatch_buf);
pass.bind_ssbo("clear_page_buf", clear_page_buf);
pass.bind_image("render_map_lod0_img", render_map_tx.mip_view(0));
pass.bind_image("render_map_lod1_img", render_map_tx.mip_view(1));
pass.bind_image("render_map_lod2_img", render_map_tx.mip_view(2));
pass.bind_image("render_map_lod3_img", render_map_tx.mip_view(3));
pass.bind_image("render_map_lod4_img", render_map_tx.mip_view(4));
pass.bind_image("render_map_lod5_img", render_map_tx.mip_view(5));
pass.dispatch(int3(1, 1, tilemaps_data.size()));
Manager manager;
manager.submit(pass);
GPU_finish();
GPU_memory_barrier(GPU_BARRIER_TEXTURE_UPDATE);
{
uint *pixels = tilemap_tx.read<uint32_t>(GPU_DATA_UINT);
std::string result = "";
for (auto y : IndexRange(SHADOW_TILEMAP_RES)) {
for (auto x : IndexRange(SHADOW_TILEMAP_RES)) {
result += std::to_string(shadow_tile_unpack(pixels[y * SHADOW_TILEMAP_RES + x]).page.x);
}
}
MEM_SAFE_FREE(pixels);
/** The layout of these expected strings is Y down. */
StringRefNull expected_pages =
"12334444755555556666666666666666"
"22334444555555556666666666666666"
"33334444555555556666666666666666"
"33334444555555556666666666666666"
"44444444555555556666666666666666"
"44444444555555556666666666666666"
"44444444555555556666666666666666"
"44444444555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"55555555555555556666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666"
"66666666666666666666666666666666";
EXPECT_EQ(expected_pages, result);
}
{
auto stringify_lod = [](Span<uint> data) -> std::string {
std::string result = "";
for (auto x : data) {
result += (x == 0xFFFFFFFFu) ? '-' : '0' + (x % 10);
}
return result;
};
/** The layout of these expected strings is Y down. */
StringRefNull expected_lod0 =
"--------7-----------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------";
StringRefNull expected_lod1 =
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------"
"----------------";
StringRefNull expected_lod2 =
"3-------"
"--------"
"--------"
"--------"
"--------"
"--------"
"--------"
"--------";
StringRefNull expected_lod3 =
"----"
"----"
"----"
"----";
StringRefNull expected_lod4 =
"5-"
"--";
StringRefNull expected_lod5 = "6";
uint *pixels_lod0 = render_map_tx.read<uint32_t>(GPU_DATA_UINT, 0);
uint *pixels_lod1 = render_map_tx.read<uint32_t>(GPU_DATA_UINT, 1);
uint *pixels_lod2 = render_map_tx.read<uint32_t>(GPU_DATA_UINT, 2);
uint *pixels_lod3 = render_map_tx.read<uint32_t>(GPU_DATA_UINT, 3);
uint *pixels_lod4 = render_map_tx.read<uint32_t>(GPU_DATA_UINT, 4);
uint *pixels_lod5 = render_map_tx.read<uint32_t>(GPU_DATA_UINT, 5);
EXPECT_EQ(stringify_lod(Span<uint>(pixels_lod0, lod0_len)), expected_lod0);
EXPECT_EQ(stringify_lod(Span<uint>(pixels_lod1, lod1_len)), expected_lod1);
EXPECT_EQ(stringify_lod(Span<uint>(pixels_lod2, lod2_len)), expected_lod2);
EXPECT_EQ(stringify_lod(Span<uint>(pixels_lod3, lod3_len)), expected_lod3);
EXPECT_EQ(stringify_lod(Span<uint>(pixels_lod4, lod4_len)), expected_lod4);
EXPECT_EQ(stringify_lod(Span<uint>(pixels_lod5, 1)), expected_lod5);
MEM_SAFE_FREE(pixels_lod0);
MEM_SAFE_FREE(pixels_lod1);
MEM_SAFE_FREE(pixels_lod2);
MEM_SAFE_FREE(pixels_lod3);
MEM_SAFE_FREE(pixels_lod4);
MEM_SAFE_FREE(pixels_lod5);
}
pages_infos_data.read();
EXPECT_EQ(pages_infos_data.page_free_count, 0);
EXPECT_EQ(pages_infos_data.view_count, 1);
GPU_shader_free(sh);
DRW_shaders_free();
}
DRAW_TEST(eevee_shadow_finalize)
static void test_eevee_shadow_page_mask()
{
ShadowTileMapDataBuf tilemaps_data = {"tilemaps_data"};
ShadowTileDataBuf tiles_data = {"tiles_data"};
{
ShadowTileMap tilemap(0);
tilemap.sync_cubeface(float4x4::identity(), 0.01f, 1.0f, Z_NEG, 0.0f);
tilemaps_data.append(tilemap);
}
const uint lod0_len = SHADOW_TILEMAP_LOD0_LEN;
const uint lod1_len = SHADOW_TILEMAP_LOD1_LEN;
const uint lod2_len = SHADOW_TILEMAP_LOD2_LEN;
const uint lod3_len = SHADOW_TILEMAP_LOD3_LEN;
const uint lod4_len = SHADOW_TILEMAP_LOD4_LEN;
const uint lod5_len = SHADOW_TILEMAP_LOD5_LEN;
const uint lod0_ofs = 0;
const uint lod1_ofs = lod0_ofs + lod0_len;
const uint lod2_ofs = lod1_ofs + lod1_len;
const uint lod3_ofs = lod2_ofs + lod2_len;
const uint lod4_ofs = lod3_ofs + lod3_len;
const uint lod5_ofs = lod4_ofs + lod4_len;
{
ShadowTileData tile;
/* Init all LOD to true. */
for (auto i : IndexRange(SHADOW_TILEDATA_PER_TILEMAP)) {
tile.is_used = true;
tiles_data[i] = shadow_tile_pack(tile);
}
/* Init all of LOD0 to false. */
for (auto i : IndexRange(square_i(SHADOW_TILEMAP_RES))) {
tile.is_used = false;
tiles_data[i] = shadow_tile_pack(tile);
}
/* Bottom Left of the LOD0 to true. */
for (auto y : IndexRange((SHADOW_TILEMAP_RES / 2) + 1)) {
for (auto x : IndexRange((SHADOW_TILEMAP_RES / 2) + 1)) {
tile.is_used = true;
tiles_data[x + y * SHADOW_TILEMAP_RES] = shadow_tile_pack(tile);
}
}
/* All Bottom of the LOD0 to true. */
for (auto x : IndexRange(SHADOW_TILEMAP_RES)) {
tile.is_used = true;
tiles_data[x] = shadow_tile_pack(tile);
}
/* Bottom Left of the LOD1 to false. */
/* Should still cover bottom LODs since it is itself fully masked */
for (auto y : IndexRange((SHADOW_TILEMAP_RES / 8))) {
for (auto x : IndexRange((SHADOW_TILEMAP_RES / 8))) {
tile.is_used = false;
tiles_data[x + y * (SHADOW_TILEMAP_RES / 2) + lod0_len] = shadow_tile_pack(tile);
}
}
/* Top right Center of the LOD1 to false. */
/* Should un-cover 1 LOD2 tile. */
{
int x = SHADOW_TILEMAP_RES / 4;
int y = SHADOW_TILEMAP_RES / 4;
tile.is_used = false;
tiles_data[x + y * (SHADOW_TILEMAP_RES / 2) + lod0_len] = shadow_tile_pack(tile);
}
tiles_data.push_update();
}
tilemaps_data.push_update();
GPUShader *sh = GPU_shader_create_from_info_name("eevee_shadow_page_mask");
PassSimple pass("Test");
pass.shader_set(sh);
pass.bind_ssbo("tilemaps_buf", tilemaps_data);
pass.bind_ssbo("tiles_buf", tiles_data);
pass.dispatch(int3(1, 1, tilemaps_data.size()));
Manager manager;
manager.submit(pass);
GPU_finish();
tiles_data.read();
/** The layout of these expected strings is Y down. */
StringRefNull expected_lod0 =
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"xxxxxxxxxxxxxxxxx---------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------"
"--------------------------------";
StringRefNull expected_lod1 =
"--------xxxxxxxx"
"--------xxxxxxxx"
"--------xxxxxxxx"
"--------xxxxxxxx"
"--------xxxxxxxx"
"--------xxxxxxxx"
"--------xxxxxxxx"
"--------xxxxxxxx"
"xxxxxxxx-xxxxxxx"
"xxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxx"
"xxxxxxxxxxxxxxxx";
StringRefNull expected_lod2 =
"--------"
"--------"
"--------"
"--------"
"----x---"
"--------"
"--------"
"--------";
StringRefNull expected_lod3 =
"----"
"----"
"----"
"----";
StringRefNull expected_lod4 =
"--"
"--";
StringRefNull expected_lod5 = "-";
auto stringify_result = [&](uint start, uint len) -> std::string {
std::string result = "";
for (auto i : IndexRange(start, len)) {
result += (shadow_tile_unpack(tiles_data[i]).is_used) ? "x" : "-";
}
return result;
};
EXPECT_EQ(stringify_result(lod0_ofs, lod0_len), expected_lod0);
EXPECT_EQ(stringify_result(lod1_ofs, lod1_len), expected_lod1);
EXPECT_EQ(stringify_result(lod2_ofs, lod2_len), expected_lod2);
EXPECT_EQ(stringify_result(lod3_ofs, lod3_len), expected_lod3);
EXPECT_EQ(stringify_result(lod4_ofs, lod4_len), expected_lod4);
EXPECT_EQ(stringify_result(lod5_ofs, lod5_len), expected_lod5);
GPU_shader_free(sh);
DRW_shaders_free();
}
DRAW_TEST(eevee_shadow_page_mask)
} // namespace blender::draw
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