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-rw-r--r--src/tests/CMakeLists.txt1
-rw-r--r--src/tests/video_core/buffer_base.cpp473
-rw-r--r--src/video_core/CMakeLists.txt1
-rw-r--r--src/video_core/buffer_cache/buffer_base.h495
4 files changed, 970 insertions, 0 deletions
diff --git a/src/tests/CMakeLists.txt b/src/tests/CMakeLists.txt
index 33fa89583..6a5c18945 100644
--- a/src/tests/CMakeLists.txt
+++ b/src/tests/CMakeLists.txt
@@ -5,6 +5,7 @@ add_executable(tests
5 common/ring_buffer.cpp 5 common/ring_buffer.cpp
6 core/core_timing.cpp 6 core/core_timing.cpp
7 tests.cpp 7 tests.cpp
8 video_core/buffer_base.cpp
8) 9)
9 10
10create_target_directory_groups(tests) 11create_target_directory_groups(tests)
diff --git a/src/tests/video_core/buffer_base.cpp b/src/tests/video_core/buffer_base.cpp
new file mode 100644
index 000000000..651633e9e
--- /dev/null
+++ b/src/tests/video_core/buffer_base.cpp
@@ -0,0 +1,473 @@
1// Copyright 2020 yuzu Emulator Project
2// Licensed under GPLv2 or any later version
3// Refer to the license.txt file included.
4
5#include <stdexcept>
6#include <unordered_map>
7
8#include <catch2/catch.hpp>
9
10#include "common/alignment.h"
11#include "common/common_types.h"
12#include "video_core/buffer_cache/buffer_base.h"
13
14namespace {
15using VideoCommon::BufferBase;
16using Range = std::pair<u64, u64>;
17
18constexpr u64 PAGE = 4096;
19constexpr u64 WORD = 4096 * 64;
20
21constexpr VAddr c = 0x1328914000;
22
23class RasterizerInterface {
24public:
25 void UpdatePagesCachedCount(VAddr addr, u64 size, int delta) {
26 const u64 page_start{addr >> Core::Memory::PAGE_BITS};
27 const u64 page_end{(addr + size + Core::Memory::PAGE_SIZE - 1) >> Core::Memory::PAGE_BITS};
28 for (u64 page = page_start; page < page_end; ++page) {
29 int& value = page_table[page];
30 value += delta;
31 if (value < 0) {
32 throw std::logic_error{"negative page"};
33 }
34 if (value == 0) {
35 page_table.erase(page);
36 }
37 }
38 }
39
40 [[nodiscard]] int Count(VAddr addr) const noexcept {
41 const auto it = page_table.find(addr >> Core::Memory::PAGE_BITS);
42 return it == page_table.end() ? 0 : it->second;
43 }
44
45 [[nodiscard]] unsigned Count() const noexcept {
46 unsigned count = 0;
47 for (const auto [index, value] : page_table) {
48 count += value;
49 }
50 return count;
51 }
52
53private:
54 std::unordered_map<u64, int> page_table;
55};
56} // Anonymous namespace
57
58TEST_CASE("BufferBase: Small buffer", "[video_core]") {
59 RasterizerInterface rasterizer;
60 BufferBase buffer(rasterizer, c, WORD);
61 REQUIRE(rasterizer.Count() == 0);
62 buffer.UnmarkRegionAsCpuModified(c, WORD);
63 REQUIRE(rasterizer.Count() == WORD / PAGE);
64 REQUIRE(buffer.ModifiedCpuRegion(c, WORD) == Range{0, 0});
65
66 buffer.MarkRegionAsCpuModified(c + PAGE, 1);
67 REQUIRE(buffer.ModifiedCpuRegion(c, WORD) == Range{PAGE * 1, PAGE * 2});
68}
69
70TEST_CASE("BufferBase: Large buffer", "[video_core]") {
71 RasterizerInterface rasterizer;
72 BufferBase buffer(rasterizer, c, WORD * 32);
73 buffer.UnmarkRegionAsCpuModified(c, WORD * 32);
74 buffer.MarkRegionAsCpuModified(c + 4096, WORD * 4);
75 REQUIRE(buffer.ModifiedCpuRegion(c, WORD + PAGE * 2) == Range{PAGE, WORD + PAGE * 2});
76 REQUIRE(buffer.ModifiedCpuRegion(c + PAGE * 2, PAGE * 6) == Range{PAGE * 2, PAGE * 8});
77 REQUIRE(buffer.ModifiedCpuRegion(c, WORD * 32) == Range{PAGE, WORD * 4 + PAGE});
78 REQUIRE(buffer.ModifiedCpuRegion(c + WORD * 4, PAGE) == Range{WORD * 4, WORD * 4 + PAGE});
79 REQUIRE(buffer.ModifiedCpuRegion(c + WORD * 3 + PAGE * 63, PAGE) ==
80 Range{WORD * 3 + PAGE * 63, WORD * 4});
81
82 buffer.MarkRegionAsCpuModified(c + WORD * 5 + PAGE * 6, PAGE);
83 buffer.MarkRegionAsCpuModified(c + WORD * 5 + PAGE * 8, PAGE);
84 REQUIRE(buffer.ModifiedCpuRegion(c + WORD * 5, WORD) ==
85 Range{WORD * 5 + PAGE * 6, WORD * 5 + PAGE * 9});
86
87 buffer.UnmarkRegionAsCpuModified(c + WORD * 5 + PAGE * 8, PAGE);
88 REQUIRE(buffer.ModifiedCpuRegion(c + WORD * 5, WORD) ==
89 Range{WORD * 5 + PAGE * 6, WORD * 5 + PAGE * 7});
90
91 buffer.MarkRegionAsCpuModified(c + PAGE, WORD * 31 + PAGE * 63);
92 REQUIRE(buffer.ModifiedCpuRegion(c, WORD * 32) == Range{PAGE, WORD * 32});
93
94 buffer.UnmarkRegionAsCpuModified(c + PAGE * 4, PAGE);
95 buffer.UnmarkRegionAsCpuModified(c + PAGE * 6, PAGE);
96
97 buffer.UnmarkRegionAsCpuModified(c, WORD * 32);
98 REQUIRE(buffer.ModifiedCpuRegion(c, WORD * 32) == Range{0, 0});
99}
100
101TEST_CASE("BufferBase: Rasterizer counting", "[video_core]") {
102 RasterizerInterface rasterizer;
103 BufferBase buffer(rasterizer, c, PAGE * 2);
104 REQUIRE(rasterizer.Count() == 0);
105 buffer.UnmarkRegionAsCpuModified(c, PAGE);
106 REQUIRE(rasterizer.Count() == 1);
107 buffer.MarkRegionAsCpuModified(c, PAGE * 2);
108 REQUIRE(rasterizer.Count() == 0);
109 buffer.UnmarkRegionAsCpuModified(c, PAGE);
110 buffer.UnmarkRegionAsCpuModified(c + PAGE, PAGE);
111 REQUIRE(rasterizer.Count() == 2);
112 buffer.MarkRegionAsCpuModified(c, PAGE * 2);
113 REQUIRE(rasterizer.Count() == 0);
114}
115
116TEST_CASE("BufferBase: Basic range", "[video_core]") {
117 RasterizerInterface rasterizer;
118 BufferBase buffer(rasterizer, c, WORD);
119 buffer.UnmarkRegionAsCpuModified(c, WORD);
120 buffer.MarkRegionAsCpuModified(c, PAGE);
121 int num = 0;
122 buffer.ForEachUploadRange(c, WORD, [&](u64 offset, u64 size) {
123 REQUIRE(offset == 0U);
124 REQUIRE(size == PAGE);
125 ++num;
126 });
127 REQUIRE(num == 1U);
128}
129
130TEST_CASE("BufferBase: Border upload", "[video_core]") {
131 RasterizerInterface rasterizer;
132 BufferBase buffer(rasterizer, c, WORD * 2);
133 buffer.UnmarkRegionAsCpuModified(c, WORD * 2);
134 buffer.MarkRegionAsCpuModified(c + WORD - PAGE, PAGE * 2);
135 buffer.ForEachUploadRange(c, WORD * 2, [](u64 offset, u64 size) {
136 REQUIRE(offset == WORD - PAGE);
137 REQUIRE(size == PAGE * 2);
138 });
139}
140
141TEST_CASE("BufferBase: Border upload range", "[video_core]") {
142 RasterizerInterface rasterizer;
143 BufferBase buffer(rasterizer, c, WORD * 2);
144 buffer.UnmarkRegionAsCpuModified(c, WORD * 2);
145 buffer.MarkRegionAsCpuModified(c + WORD - PAGE, PAGE * 2);
146 buffer.ForEachUploadRange(c + WORD - PAGE, PAGE * 2, [](u64 offset, u64 size) {
147 REQUIRE(offset == WORD - PAGE);
148 REQUIRE(size == PAGE * 2);
149 });
150 buffer.MarkRegionAsCpuModified(c + WORD - PAGE, PAGE * 2);
151 buffer.ForEachUploadRange(c + WORD - PAGE, PAGE, [](u64 offset, u64 size) {
152 REQUIRE(offset == WORD - PAGE);
153 REQUIRE(size == PAGE);
154 });
155 buffer.ForEachUploadRange(c + WORD, PAGE, [](u64 offset, u64 size) {
156 REQUIRE(offset == WORD);
157 REQUIRE(size == PAGE);
158 });
159}
160
161TEST_CASE("BufferBase: Border upload partial range", "[video_core]") {
162 RasterizerInterface rasterizer;
163 BufferBase buffer(rasterizer, c, WORD * 2);
164 buffer.UnmarkRegionAsCpuModified(c, WORD * 2);
165 buffer.MarkRegionAsCpuModified(c + WORD - PAGE, PAGE * 2);
166 buffer.ForEachUploadRange(c + WORD - 1, 2, [](u64 offset, u64 size) {
167 REQUIRE(offset == WORD - PAGE);
168 REQUIRE(size == PAGE * 2);
169 });
170 buffer.MarkRegionAsCpuModified(c + WORD - PAGE, PAGE * 2);
171 buffer.ForEachUploadRange(c + WORD - 1, 1, [](u64 offset, u64 size) {
172 REQUIRE(offset == WORD - PAGE);
173 REQUIRE(size == PAGE);
174 });
175 buffer.ForEachUploadRange(c + WORD + 50, 1, [](u64 offset, u64 size) {
176 REQUIRE(offset == WORD);
177 REQUIRE(size == PAGE);
178 });
179}
180
181TEST_CASE("BufferBase: Partial word uploads", "[video_core]") {
182 RasterizerInterface rasterizer;
183 BufferBase buffer(rasterizer, c, 0x9d000);
184 int num = 0;
185 buffer.ForEachUploadRange(c, WORD, [&](u64 offset, u64 size) {
186 REQUIRE(offset == 0U);
187 REQUIRE(size == WORD);
188 ++num;
189 });
190 REQUIRE(num == 1);
191 buffer.ForEachUploadRange(c + WORD, WORD, [&](u64 offset, u64 size) {
192 REQUIRE(offset == WORD);
193 REQUIRE(size == WORD);
194 ++num;
195 });
196 REQUIRE(num == 2);
197 buffer.ForEachUploadRange(c + 0x79000, 0x24000, [&](u64 offset, u64 size) {
198 REQUIRE(offset == WORD * 2);
199 REQUIRE(size == PAGE * 0x1d);
200 ++num;
201 });
202 REQUIRE(num == 3);
203}
204
205TEST_CASE("BufferBase: Partial page upload", "[video_core]") {
206 RasterizerInterface rasterizer;
207 BufferBase buffer(rasterizer, c, WORD);
208 buffer.UnmarkRegionAsCpuModified(c, WORD);
209 int num = 0;
210 buffer.MarkRegionAsCpuModified(c + PAGE * 2, PAGE);
211 buffer.MarkRegionAsCpuModified(c + PAGE * 9, PAGE);
212 buffer.ForEachUploadRange(c, PAGE * 3, [&](u64 offset, u64 size) {
213 REQUIRE(offset == PAGE * 2);
214 REQUIRE(size == PAGE);
215 ++num;
216 });
217 REQUIRE(num == 1);
218 buffer.ForEachUploadRange(c + PAGE * 7, PAGE * 3, [&](u64 offset, u64 size) {
219 REQUIRE(offset == PAGE * 9);
220 REQUIRE(size == PAGE);
221 ++num;
222 });
223 REQUIRE(num == 2);
224}
225
226TEST_CASE("BufferBase: Partial page upload with multiple words on the right") {
227 RasterizerInterface rasterizer;
228 BufferBase buffer(rasterizer, c, WORD * 8);
229 buffer.UnmarkRegionAsCpuModified(c, WORD * 8);
230 buffer.MarkRegionAsCpuModified(c + PAGE * 13, WORD * 7);
231 int num = 0;
232 buffer.ForEachUploadRange(c + PAGE * 10, WORD * 7, [&](u64 offset, u64 size) {
233 REQUIRE(offset == PAGE * 13);
234 REQUIRE(size == WORD * 7 - PAGE * 3);
235 ++num;
236 });
237 REQUIRE(num == 1);
238 buffer.ForEachUploadRange(c + PAGE, WORD * 8, [&](u64 offset, u64 size) {
239 REQUIRE(offset == WORD * 7 + PAGE * 10);
240 REQUIRE(size == PAGE * 3);
241 ++num;
242 });
243 REQUIRE(num == 2);
244}
245
246TEST_CASE("BufferBase: Partial page upload with multiple words on the left", "[video_core]") {
247 RasterizerInterface rasterizer;
248 BufferBase buffer(rasterizer, c, WORD * 8);
249 buffer.UnmarkRegionAsCpuModified(c, WORD * 8);
250 buffer.MarkRegionAsCpuModified(c + PAGE * 13, WORD * 7);
251 int num = 0;
252 buffer.ForEachUploadRange(c + PAGE * 16, WORD * 7, [&](u64 offset, u64 size) {
253 REQUIRE(offset == PAGE * 16);
254 REQUIRE(size == WORD * 7 - PAGE * 3);
255 ++num;
256 });
257 REQUIRE(num == 1);
258 buffer.ForEachUploadRange(c + PAGE, WORD, [&](u64 offset, u64 size) {
259 REQUIRE(offset == PAGE * 13);
260 REQUIRE(size == PAGE * 3);
261 ++num;
262 });
263 REQUIRE(num == 2);
264}
265
266TEST_CASE("BufferBase: Partial page upload with multiple words in the middle", "[video_core]") {
267 RasterizerInterface rasterizer;
268 BufferBase buffer(rasterizer, c, WORD * 8);
269 buffer.UnmarkRegionAsCpuModified(c, WORD * 8);
270 buffer.MarkRegionAsCpuModified(c + PAGE * 13, PAGE * 140);
271 int num = 0;
272 buffer.ForEachUploadRange(c + PAGE * 16, WORD, [&](u64 offset, u64 size) {
273 REQUIRE(offset == PAGE * 16);
274 REQUIRE(size == WORD);
275 ++num;
276 });
277 REQUIRE(num == 1);
278 buffer.ForEachUploadRange(c, WORD, [&](u64 offset, u64 size) {
279 REQUIRE(offset == PAGE * 13);
280 REQUIRE(size == PAGE * 3);
281 ++num;
282 });
283 REQUIRE(num == 2);
284 buffer.ForEachUploadRange(c, WORD * 8, [&](u64 offset, u64 size) {
285 REQUIRE(offset == WORD + PAGE * 16);
286 REQUIRE(size == PAGE * 73);
287 ++num;
288 });
289 REQUIRE(num == 3);
290}
291
292TEST_CASE("BufferBase: Empty right bits", "[video_core]") {
293 RasterizerInterface rasterizer;
294 BufferBase buffer(rasterizer, c, WORD * 2048);
295 buffer.UnmarkRegionAsCpuModified(c, WORD * 2048);
296 buffer.MarkRegionAsCpuModified(c + WORD - PAGE, PAGE * 2);
297 buffer.ForEachUploadRange(c, WORD * 2048, [](u64 offset, u64 size) {
298 REQUIRE(offset == WORD - PAGE);
299 REQUIRE(size == PAGE * 2);
300 });
301}
302
303TEST_CASE("BufferBase: Out of bound ranges 1", "[video_core]") {
304 RasterizerInterface rasterizer;
305 BufferBase buffer(rasterizer, c, WORD);
306 buffer.UnmarkRegionAsCpuModified(c, WORD);
307 buffer.MarkRegionAsCpuModified(c, PAGE);
308 int num = 0;
309 buffer.ForEachUploadRange(c - WORD, WORD, [&](u64 offset, u64 size) { ++num; });
310 buffer.ForEachUploadRange(c + WORD, WORD, [&](u64 offset, u64 size) { ++num; });
311 buffer.ForEachUploadRange(c - PAGE, PAGE, [&](u64 offset, u64 size) { ++num; });
312 REQUIRE(num == 0);
313 buffer.ForEachUploadRange(c - PAGE, PAGE * 2, [&](u64 offset, u64 size) { ++num; });
314 REQUIRE(num == 1);
315 buffer.MarkRegionAsCpuModified(c, WORD);
316 REQUIRE(rasterizer.Count() == 0);
317}
318
319TEST_CASE("BufferBase: Out of bound ranges 2", "[video_core]") {
320 RasterizerInterface rasterizer;
321 BufferBase buffer(rasterizer, c, 0x22000);
322 REQUIRE_NOTHROW(buffer.UnmarkRegionAsCpuModified(c + 0x22000, PAGE));
323 REQUIRE_NOTHROW(buffer.UnmarkRegionAsCpuModified(c + 0x28000, PAGE));
324 REQUIRE(rasterizer.Count() == 0);
325 REQUIRE_NOTHROW(buffer.UnmarkRegionAsCpuModified(c + 0x21100, PAGE - 0x100));
326 REQUIRE(rasterizer.Count() == 1);
327 REQUIRE_NOTHROW(buffer.UnmarkRegionAsCpuModified(c - 0x1000, PAGE * 2));
328 buffer.UnmarkRegionAsCpuModified(c - 0x3000, PAGE * 2);
329 buffer.UnmarkRegionAsCpuModified(c - 0x2000, PAGE * 2);
330 REQUIRE(rasterizer.Count() == 2);
331}
332
333TEST_CASE("BufferBase: Out of bound ranges 3", "[video_core]") {
334 RasterizerInterface rasterizer;
335 BufferBase buffer(rasterizer, c, 0x310720);
336 buffer.UnmarkRegionAsCpuModified(c, 0x310720);
337 REQUIRE(rasterizer.Count(c) == 1);
338 REQUIRE(rasterizer.Count(c + PAGE) == 1);
339 REQUIRE(rasterizer.Count(c + WORD) == 1);
340 REQUIRE(rasterizer.Count(c + WORD + PAGE) == 1);
341}
342
343TEST_CASE("BufferBase: Sparse regions 1", "[video_core]") {
344 RasterizerInterface rasterizer;
345 BufferBase buffer(rasterizer, c, WORD);
346 buffer.UnmarkRegionAsCpuModified(c, WORD);
347 buffer.MarkRegionAsCpuModified(c + PAGE * 1, PAGE);
348 buffer.MarkRegionAsCpuModified(c + PAGE * 3, PAGE * 4);
349 buffer.ForEachUploadRange(c, WORD, [i = 0](u64 offset, u64 size) mutable {
350 static constexpr std::array<u64, 2> offsets{PAGE, PAGE * 3};
351 static constexpr std::array<u64, 2> sizes{PAGE, PAGE * 4};
352 REQUIRE(offset == offsets.at(i));
353 REQUIRE(size == sizes.at(i));
354 ++i;
355 });
356}
357
358TEST_CASE("BufferBase: Sparse regions 2", "[video_core]") {
359 RasterizerInterface rasterizer;
360 BufferBase buffer(rasterizer, c, 0x22000);
361 buffer.UnmarkRegionAsCpuModified(c, 0x22000);
362 REQUIRE(rasterizer.Count() == 0x22);
363 buffer.MarkRegionAsCpuModified(c + PAGE * 0x1B, PAGE);
364 buffer.MarkRegionAsCpuModified(c + PAGE * 0x21, PAGE);
365 buffer.ForEachUploadRange(c, WORD, [i = 0](u64 offset, u64 size) mutable {
366 static constexpr std::array<u64, 2> offsets{PAGE * 0x1B, PAGE * 0x21};
367 static constexpr std::array<u64, 2> sizes{PAGE, PAGE};
368 REQUIRE(offset == offsets.at(i));
369 REQUIRE(size == sizes.at(i));
370 ++i;
371 });
372}
373
374TEST_CASE("BufferBase: Single page modified range", "[video_core]") {
375 RasterizerInterface rasterizer;
376 BufferBase buffer(rasterizer, c, PAGE);
377 REQUIRE(buffer.IsRegionCpuModified(c, PAGE));
378 buffer.UnmarkRegionAsCpuModified(c, PAGE);
379 REQUIRE(!buffer.IsRegionCpuModified(c, PAGE));
380}
381
382TEST_CASE("BufferBase: Two page modified range", "[video_core]") {
383 RasterizerInterface rasterizer;
384 BufferBase buffer(rasterizer, c, PAGE * 2);
385 REQUIRE(buffer.IsRegionCpuModified(c, PAGE));
386 REQUIRE(buffer.IsRegionCpuModified(c + PAGE, PAGE));
387 REQUIRE(buffer.IsRegionCpuModified(c, PAGE * 2));
388 buffer.UnmarkRegionAsCpuModified(c, PAGE);
389 REQUIRE(!buffer.IsRegionCpuModified(c, PAGE));
390}
391
392TEST_CASE("BufferBase: Multi word modified ranges", "[video_core]") {
393 for (int offset = 0; offset < 4; ++offset) {
394 const VAddr address = c + WORD * offset;
395 RasterizerInterface rasterizer;
396 BufferBase buffer(rasterizer, address, WORD * 4);
397 REQUIRE(buffer.IsRegionCpuModified(address, PAGE));
398 REQUIRE(buffer.IsRegionCpuModified(address + PAGE * 48, PAGE));
399 REQUIRE(buffer.IsRegionCpuModified(address + PAGE * 56, PAGE));
400
401 buffer.UnmarkRegionAsCpuModified(address + PAGE * 32, PAGE);
402 REQUIRE(buffer.IsRegionCpuModified(address + PAGE, WORD));
403 REQUIRE(buffer.IsRegionCpuModified(address + PAGE * 31, PAGE));
404 REQUIRE(!buffer.IsRegionCpuModified(address + PAGE * 32, PAGE));
405 REQUIRE(buffer.IsRegionCpuModified(address + PAGE * 33, PAGE));
406 REQUIRE(buffer.IsRegionCpuModified(address + PAGE * 31, PAGE * 2));
407 REQUIRE(buffer.IsRegionCpuModified(address + PAGE * 32, PAGE * 2));
408
409 buffer.UnmarkRegionAsCpuModified(address + PAGE * 33, PAGE);
410 REQUIRE(!buffer.IsRegionCpuModified(address + PAGE * 32, PAGE * 2));
411 }
412}
413
414TEST_CASE("BufferBase: Single page in large buffer", "[video_core]") {
415 RasterizerInterface rasterizer;
416 BufferBase buffer(rasterizer, c, WORD * 16);
417 buffer.UnmarkRegionAsCpuModified(c, WORD * 16);
418 REQUIRE(!buffer.IsRegionCpuModified(c, WORD * 16));
419
420 buffer.MarkRegionAsCpuModified(c + WORD * 12 + PAGE * 8, PAGE);
421 REQUIRE(buffer.IsRegionCpuModified(c, WORD * 16));
422 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 10, WORD * 2));
423 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 11, WORD * 2));
424 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 12, WORD * 2));
425 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 12 + PAGE * 4, PAGE * 8));
426 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 12 + PAGE * 6, PAGE * 8));
427 REQUIRE(!buffer.IsRegionCpuModified(c + WORD * 12 + PAGE * 6, PAGE));
428 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 12 + PAGE * 7, PAGE * 2));
429 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 12 + PAGE * 8, PAGE * 2));
430}
431
432TEST_CASE("BufferBase: Out of bounds region query") {
433 RasterizerInterface rasterizer;
434 BufferBase buffer(rasterizer, c, WORD * 16);
435 REQUIRE(!buffer.IsRegionCpuModified(c - PAGE, PAGE));
436 REQUIRE(!buffer.IsRegionCpuModified(c - PAGE * 2, PAGE));
437 REQUIRE(!buffer.IsRegionCpuModified(c + WORD * 16, PAGE));
438 REQUIRE(buffer.IsRegionCpuModified(c + WORD * 16 - PAGE, WORD * 64));
439 REQUIRE(!buffer.IsRegionCpuModified(c + WORD * 16, WORD * 64));
440}
441
442TEST_CASE("BufferBase: Wrap word regions") {
443 RasterizerInterface rasterizer;
444 BufferBase buffer(rasterizer, c, WORD * 2);
445 buffer.UnmarkRegionAsCpuModified(c, WORD * 2);
446 buffer.MarkRegionAsCpuModified(c + PAGE * 63, PAGE * 2);
447 REQUIRE(buffer.IsRegionCpuModified(c, WORD * 2));
448 REQUIRE(!buffer.IsRegionCpuModified(c + PAGE * 62, PAGE));
449 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 63, PAGE));
450 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 64, PAGE));
451 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 63, PAGE * 2));
452 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 63, PAGE * 8));
453 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 60, PAGE * 8));
454
455 REQUIRE(!buffer.IsRegionCpuModified(c + PAGE * 127, WORD * 16));
456 buffer.MarkRegionAsCpuModified(c + PAGE * 127, PAGE);
457 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 127, WORD * 16));
458 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 127, PAGE));
459 REQUIRE(!buffer.IsRegionCpuModified(c + PAGE * 126, PAGE));
460 REQUIRE(buffer.IsRegionCpuModified(c + PAGE * 126, PAGE * 2));
461 REQUIRE(!buffer.IsRegionCpuModified(c + PAGE * 128, WORD * 16));
462}
463
464TEST_CASE("BufferBase: Unaligned page region query") {
465 RasterizerInterface rasterizer;
466 BufferBase buffer(rasterizer, c, WORD);
467 buffer.UnmarkRegionAsCpuModified(c, WORD);
468 buffer.MarkRegionAsCpuModified(c + 4000, 1000);
469 REQUIRE(buffer.IsRegionCpuModified(c, PAGE));
470 REQUIRE(buffer.IsRegionCpuModified(c + PAGE, PAGE));
471 REQUIRE(buffer.IsRegionCpuModified(c + 4000, 1000));
472 REQUIRE(buffer.IsRegionCpuModified(c + 4000, 1));
473}
diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt
index 7a20d3a79..e01ea55ab 100644
--- a/src/video_core/CMakeLists.txt
+++ b/src/video_core/CMakeLists.txt
@@ -1,6 +1,7 @@
1add_subdirectory(host_shaders) 1add_subdirectory(host_shaders)
2 2
3add_library(video_core STATIC 3add_library(video_core STATIC
4 buffer_cache/buffer_base.h
4 buffer_cache/buffer_block.h 5 buffer_cache/buffer_block.h
5 buffer_cache/buffer_cache.h 6 buffer_cache/buffer_cache.h
6 buffer_cache/map_interval.cpp 7 buffer_cache/map_interval.cpp
diff --git a/src/video_core/buffer_cache/buffer_base.h b/src/video_core/buffer_cache/buffer_base.h
new file mode 100644
index 000000000..fd740c2c1
--- /dev/null
+++ b/src/video_core/buffer_cache/buffer_base.h
@@ -0,0 +1,495 @@
1// Copyright 2020 yuzu Emulator Project
2// Licensed under GPLv2 or any later version
3// Refer to the license.txt file included.
4
5#pragma once
6
7#include <algorithm>
8#include <bit>
9#include <limits>
10#include <utility>
11
12#include "common/alignment.h"
13#include "common/common_funcs.h"
14#include "common/common_types.h"
15#include "common/div_ceil.h"
16#include "core/memory.h"
17
18namespace VideoCommon {
19
20enum class BufferFlagBits {
21 Picked = 1 << 0,
22};
23DECLARE_ENUM_FLAG_OPERATORS(BufferFlagBits)
24
25/// Tag for creating null buffers with no storage or size
26struct NullBufferParams {};
27
28/**
29 * Range tracking buffer container.
30 *
31 * It keeps track of the modified CPU and GPU ranges on a CPU page granularity, notifying the given
32 * rasterizer about state changes in the tracking behavior of the buffer.
33 *
34 * The buffer size and address is forcefully aligned to CPU page boundaries.
35 */
36template <class RasterizerInterface>
37class BufferBase {
38 static constexpr u64 PAGES_PER_WORD = 64;
39 static constexpr u64 BYTES_PER_PAGE = Core::Memory::PAGE_SIZE;
40 static constexpr u64 BYTES_PER_WORD = PAGES_PER_WORD * BYTES_PER_PAGE;
41
42 /// Vector tracking modified pages tightly packed with small vector optimization
43 union WrittenWords {
44 /// Returns the pointer to the words state
45 [[nodiscard]] const u64* Pointer(bool is_short) const noexcept {
46 return is_short ? &stack : heap;
47 }
48
49 /// Returns the pointer to the words state
50 [[nodiscard]] u64* Pointer(bool is_short) noexcept {
51 return is_short ? &stack : heap;
52 }
53
54 u64 stack = 0; ///< Small buffers storage
55 u64* heap; ///< Not-small buffers pointer to the storage
56 };
57
58 struct GpuCpuWords {
59 explicit GpuCpuWords() = default;
60 explicit GpuCpuWords(u64 size_bytes_) : size_bytes{size_bytes_} {
61 if (IsShort()) {
62 cpu.stack = ~u64{0};
63 gpu.stack = 0;
64 } else {
65 // Share allocation between CPU and GPU pages and set their default values
66 const size_t num_words = NumWords();
67 u64* const alloc = new u64[num_words * 2];
68 cpu.heap = alloc;
69 gpu.heap = alloc + num_words;
70 std::fill_n(cpu.heap, num_words, ~u64{0});
71 std::fill_n(gpu.heap, num_words, 0);
72 }
73 // Clean up tailing bits
74 const u64 last_local_page =
75 Common::DivCeil(size_bytes % BYTES_PER_WORD, BYTES_PER_PAGE);
76 const u64 shift = (PAGES_PER_WORD - last_local_page) % PAGES_PER_WORD;
77 u64& last_word = cpu.Pointer(IsShort())[NumWords() - 1];
78 last_word = (last_word << shift) >> shift;
79 }
80
81 ~GpuCpuWords() {
82 Release();
83 }
84
85 GpuCpuWords& operator=(GpuCpuWords&& rhs) noexcept {
86 Release();
87 size_bytes = rhs.size_bytes;
88 cpu = rhs.cpu;
89 gpu = rhs.gpu;
90 rhs.cpu.heap = nullptr;
91 return *this;
92 }
93
94 GpuCpuWords(GpuCpuWords&& rhs) noexcept
95 : size_bytes{rhs.size_bytes}, cpu{rhs.cpu}, gpu{rhs.gpu} {
96 rhs.cpu.heap = nullptr;
97 }
98
99 GpuCpuWords& operator=(const GpuCpuWords&) = delete;
100 GpuCpuWords(const GpuCpuWords&) = delete;
101
102 /// Returns true when the buffer fits in the small vector optimization
103 [[nodiscard]] bool IsShort() const noexcept {
104 return size_bytes <= BYTES_PER_WORD;
105 }
106
107 /// Returns the number of words of the buffer
108 [[nodiscard]] size_t NumWords() const noexcept {
109 return Common::DivCeil(size_bytes, BYTES_PER_WORD);
110 }
111
112 /// Release buffer resources
113 void Release() {
114 if (!IsShort()) {
115 // CPU written words is the base for the heap allocation
116 delete[] cpu.heap;
117 }
118 }
119
120 u64 size_bytes = 0;
121 WrittenWords cpu;
122 WrittenWords gpu;
123 };
124
125public:
126 explicit BufferBase(RasterizerInterface& rasterizer_, VAddr cpu_addr_, u64 size_bytes)
127 : rasterizer{&rasterizer_}, cpu_addr{Common::AlignDown(cpu_addr_, BYTES_PER_PAGE)},
128 words(Common::AlignUp(size_bytes + (cpu_addr_ - cpu_addr), BYTES_PER_PAGE)) {}
129
130 explicit BufferBase(NullBufferParams) {}
131
132 BufferBase& operator=(const BufferBase&) = delete;
133 BufferBase(const BufferBase&) = delete;
134
135 /// Returns the inclusive CPU modified range in a begin end pair
136 [[nodiscard]] std::pair<u64, u64> ModifiedCpuRegion(VAddr query_cpu_addr,
137 u64 query_size) const noexcept {
138 const u64 offset = query_cpu_addr - cpu_addr;
139 return ModifiedRegion<false>(offset, query_size);
140 }
141
142 /// Returns the inclusive GPU modified range in a begin end pair
143 [[nodiscard]] std::pair<u64, u64> ModifiedGpuRegion(VAddr query_cpu_addr,
144 u64 query_size) const noexcept {
145 const u64 offset = query_cpu_addr - cpu_addr;
146 return ModifiedRegion<true>(offset, query_size);
147 }
148
149 /// Returns true if a region has been modified from the CPU
150 [[nodiscard]] bool IsRegionCpuModified(VAddr query_cpu_addr, u64 query_size) const noexcept {
151 const u64 offset = query_cpu_addr - cpu_addr;
152 return IsRegionModified<false>(offset, query_size);
153 }
154
155 /// Returns true if a region has been modified from the GPU
156 [[nodiscard]] bool IsRegionGpuModified(VAddr query_cpu_addr, u64 query_size) const noexcept {
157 const u64 offset = query_cpu_addr - cpu_addr;
158 return IsRegionModified<true>(offset, query_size);
159 }
160
161 /// Mark region as CPU modified, notifying the rasterizer about this change
162 void MarkRegionAsCpuModified(VAddr dirty_cpu_addr, u64 size) {
163 ChangeRegionState<true, true>(words.cpu, dirty_cpu_addr, size);
164 }
165
166 /// Unmark region as CPU modified, notifying the rasterizer about this change
167 void UnmarkRegionAsCpuModified(VAddr dirty_cpu_addr, u64 size) {
168 ChangeRegionState<false, true>(words.cpu, dirty_cpu_addr, size);
169 }
170
171 /// Mark region as modified from the host GPU
172 void MarkRegionAsGpuModified(VAddr dirty_cpu_addr, u64 size) noexcept {
173 ChangeRegionState<true, false>(words.gpu, dirty_cpu_addr, size);
174 }
175
176 /// Unmark region as modified from the host GPU
177 void UnmarkRegionAsGpuModified(VAddr dirty_cpu_addr, u64 size) noexcept {
178 ChangeRegionState<false, false>(words.gpu, dirty_cpu_addr, size);
179 }
180
181 /// Call 'func' for each CPU modified range and unmark those pages as CPU modified
182 template <typename Func>
183 void ForEachUploadRange(VAddr query_cpu_range, u64 size, Func&& func) {
184 ForEachModifiedRange<false, true>(query_cpu_range, size, func);
185 }
186
187 /// Call 'func' for each GPU modified range and unmark those pages as GPU modified
188 template <typename Func>
189 void ForEachDownloadRange(VAddr query_cpu_range, u64 size, Func&& func) {
190 ForEachModifiedRange<true, false>(query_cpu_range, size, func);
191 }
192
193 /// Call 'func' for each GPU modified range and unmark those pages as GPU modified
194 template <typename Func>
195 void ForEachDownloadRange(Func&& func) {
196 ForEachModifiedRange<true, false>(cpu_addr, SizeBytes(), func);
197 }
198
199 /// Mark buffer as picked
200 void Pick() noexcept {
201 flags |= BufferFlagBits::Picked;
202 }
203
204 /// Unmark buffer as picked
205 void Unpick() noexcept {
206 flags &= ~BufferFlagBits::Picked;
207 }
208
209 /// Returns true when vaddr -> vaddr+size is fully contained in the buffer
210 [[nodiscard]] bool IsInBounds(VAddr addr, u64 size) const noexcept {
211 return addr >= cpu_addr && addr + size <= cpu_addr + SizeBytes();
212 }
213
214 /// Returns true if the buffer has been marked as picked
215 [[nodiscard]] bool IsPicked() const noexcept {
216 return True(flags & BufferFlagBits::Picked);
217 }
218
219 /// Returns the base CPU address of the buffer
220 [[nodiscard]] VAddr CpuAddr() const noexcept {
221 return cpu_addr;
222 }
223
224 /// Returns the offset relative to the given CPU address
225 /// @pre IsInBounds returns true
226 [[nodiscard]] u32 Offset(VAddr other_cpu_addr) const noexcept {
227 return static_cast<u32>(other_cpu_addr - cpu_addr);
228 }
229
230 /// Returns the size in bytes of the buffer
231 [[nodiscard]] u64 SizeBytes() const noexcept {
232 return words.size_bytes;
233 }
234
235private:
236 /**
237 * Change the state of a range of pages
238 *
239 * @param written_words Pages to be marked or unmarked as modified
240 * @param dirty_addr Base address to mark or unmark as modified
241 * @param size Size in bytes to mark or unmark as modified
242 *
243 * @tparam enable True when the bits will be set to one, false for zero
244 * @tparam notify_rasterizer True when the rasterizer has to be notified about the changes
245 */
246 template <bool enable, bool notify_rasterizer>
247 void ChangeRegionState(WrittenWords& written_words, u64 dirty_addr,
248 s64 size) noexcept(!notify_rasterizer) {
249 const s64 difference = dirty_addr - cpu_addr;
250 const u64 offset = std::max<s64>(difference, 0);
251 size += std::min<s64>(difference, 0);
252 if (offset >= SizeBytes() || size < 0) {
253 return;
254 }
255 u64* const state_words = written_words.Pointer(IsShort());
256 const u64 offset_end = std::min(offset + size, SizeBytes());
257 const u64 begin_page_index = offset / BYTES_PER_PAGE;
258 const u64 begin_word_index = begin_page_index / PAGES_PER_WORD;
259 const u64 end_page_index = Common::DivCeil(offset_end, BYTES_PER_PAGE);
260 const u64 end_word_index = Common::DivCeil(end_page_index, PAGES_PER_WORD);
261 u64 page_index = begin_page_index % PAGES_PER_WORD;
262 u64 word_index = begin_word_index;
263 while (word_index < end_word_index) {
264 const u64 next_word_first_page = (word_index + 1) * PAGES_PER_WORD;
265 const u64 left_offset =
266 std::min(next_word_first_page - end_page_index, PAGES_PER_WORD) % PAGES_PER_WORD;
267 const u64 right_offset = page_index;
268 u64 bits = ~u64{0};
269 bits = (bits >> right_offset) << right_offset;
270 bits = (bits << left_offset) >> left_offset;
271 if constexpr (notify_rasterizer) {
272 NotifyRasterizer<!enable>(word_index, state_words[word_index], bits);
273 }
274 if constexpr (enable) {
275 state_words[word_index] |= bits;
276 } else {
277 state_words[word_index] &= ~bits;
278 }
279 page_index = 0;
280 ++word_index;
281 }
282 }
283
284 /**
285 * Notify rasterizer about changes in the CPU tracking state of a word in the buffer
286 *
287 * @param word_index Index to the word to notify to the rasterizer
288 * @param current_bits Current state of the word
289 * @param new_bits New state of the word
290 *
291 * @tparam add_to_rasterizer True when the rasterizer should start tracking the new pages
292 */
293 template <bool add_to_rasterizer>
294 void NotifyRasterizer(u64 word_index, u64 current_bits, u64 new_bits) {
295 u64 changed_bits = (add_to_rasterizer ? current_bits : ~current_bits) & new_bits;
296 VAddr addr = cpu_addr + word_index * BYTES_PER_WORD;
297 while (changed_bits != 0) {
298 const int empty_bits = std::countr_zero(changed_bits);
299 addr += empty_bits * BYTES_PER_PAGE;
300 changed_bits >>= empty_bits;
301
302 const u32 continuous_bits = std::countr_one(changed_bits);
303 const u64 size = continuous_bits * BYTES_PER_PAGE;
304 const VAddr begin_addr = addr;
305 addr += size;
306 changed_bits = continuous_bits < PAGES_PER_WORD ? (changed_bits >> continuous_bits) : 0;
307 rasterizer->UpdatePagesCachedCount(begin_addr, size, add_to_rasterizer ? 1 : -1);
308 }
309 }
310
311 /**
312 * Loop over each page in the given range, turn off those bits and notify the rasterizer if
313 * needed. Call the given function on each turned off range.
314 *
315 * @param query_cpu_range Base CPU address to loop over
316 * @param size Size in bytes of the CPU range to loop over
317 * @param func Function to call for each turned off region
318 *
319 * @tparam gpu True for host GPU pages, false for CPU pages
320 * @tparam notify_rasterizer True when the rasterizer should be notified about state changes
321 */
322 template <bool gpu, bool notify_rasterizer, typename Func>
323 void ForEachModifiedRange(VAddr query_cpu_range, s64 size, Func&& func) {
324 const s64 difference = query_cpu_range - cpu_addr;
325 const u64 query_begin = std::max<s64>(difference, 0);
326 size += std::min<s64>(difference, 0);
327 if (query_begin >= SizeBytes() || size < 0) {
328 return;
329 }
330 const u64* const cpu_words = words.cpu.Pointer(IsShort());
331 const u64 query_end = query_begin + std::min(static_cast<u64>(size), SizeBytes());
332 u64* const state_words = (gpu ? words.gpu : words.cpu).Pointer(IsShort());
333 u64* const words_begin = state_words + query_begin / BYTES_PER_WORD;
334 u64* const words_end = state_words + Common::DivCeil(query_end, BYTES_PER_WORD);
335
336 const auto modified = [](u64 word) { return word != 0; };
337 const auto first_modified_word = std::find_if(words_begin, words_end, modified);
338 if (first_modified_word == words_end) {
339 // Exit early when the buffer is not modified
340 return;
341 }
342 const auto last_modified_word = std::find_if_not(first_modified_word, words_end, modified);
343
344 const u64 word_index_begin = std::distance(state_words, first_modified_word);
345 const u64 word_index_end = std::distance(state_words, last_modified_word);
346
347 const unsigned local_page_begin = std::countr_zero(*first_modified_word);
348 const unsigned local_page_end = PAGES_PER_WORD - std::countl_zero(last_modified_word[-1]);
349 const u64 word_page_begin = word_index_begin * PAGES_PER_WORD;
350 const u64 word_page_end = (word_index_end - 1) * PAGES_PER_WORD;
351 const u64 query_page_begin = query_begin / BYTES_PER_PAGE;
352 const u64 query_page_end = Common::DivCeil(query_end, BYTES_PER_PAGE);
353 const u64 page_index_begin = std::max(word_page_begin + local_page_begin, query_page_begin);
354 const u64 page_index_end = std::min(word_page_end + local_page_end, query_page_end);
355 const u64 first_word_page_begin = page_index_begin % PAGES_PER_WORD;
356 const u64 last_word_page_end = (page_index_end - 1) % PAGES_PER_WORD + 1;
357
358 u64 page_begin = first_word_page_begin;
359 u64 current_base = 0;
360 u64 current_size = 0;
361 bool on_going = false;
362 for (u64 word_index = word_index_begin; word_index < word_index_end; ++word_index) {
363 const bool is_last_word = word_index + 1 == word_index_end;
364 const u64 page_end = is_last_word ? last_word_page_end : PAGES_PER_WORD;
365 const u64 right_offset = page_begin;
366 const u64 left_offset = PAGES_PER_WORD - page_end;
367 u64 bits = ~u64{0};
368 bits = (bits >> right_offset) << right_offset;
369 bits = (bits << left_offset) >> left_offset;
370
371 const u64 current_word = state_words[word_index] & bits;
372 state_words[word_index] &= ~bits;
373
374 // Exclude CPU modified pages when visiting GPU pages
375 const u64 word = current_word & ~(gpu ? cpu_words[word_index] : 0);
376 if constexpr (notify_rasterizer) {
377 NotifyRasterizer<true>(word_index, word, ~u64{0});
378 }
379 u64 page = page_begin;
380 page_begin = 0;
381
382 while (page < page_end) {
383 const int empty_bits = std::countr_zero(word >> page);
384 if (on_going && empty_bits != 0) {
385 InvokeModifiedRange(func, current_size, current_base);
386 current_size = 0;
387 on_going = false;
388 }
389 page += empty_bits;
390
391 const int continuous_bits = std::countr_one(word >> page);
392 if (!on_going && continuous_bits != 0) {
393 current_base = word_index * PAGES_PER_WORD + page;
394 on_going = true;
395 }
396 current_size += continuous_bits;
397 page += continuous_bits;
398 }
399 }
400 if (on_going && current_size > 0) {
401 InvokeModifiedRange(func, current_size, current_base);
402 }
403 }
404
405 template <typename Func>
406 void InvokeModifiedRange(Func&& func, u64 current_size, u64 current_base) {
407 const u64 current_size_bytes = current_size * BYTES_PER_PAGE;
408 const u64 offset_begin = current_base * BYTES_PER_PAGE;
409 const u64 offset_end = std::min(offset_begin + current_size_bytes, SizeBytes());
410 func(offset_begin, offset_end - offset_begin);
411 }
412
413 /**
414 * Returns true when a region has been modified
415 *
416 * @param offset Offset in bytes from the start of the buffer
417 * @param size Size in bytes of the region to query for modifications
418 */
419 template <bool gpu>
420 [[nodiscard]] bool IsRegionModified(u64 offset, u64 size) const noexcept {
421 const u64* const cpu_words = words.cpu.Pointer(IsShort());
422 const u64* const state_words = (gpu ? words.gpu : words.cpu).Pointer(IsShort());
423 const u64 num_query_words = size / BYTES_PER_WORD + 1;
424 const u64 word_begin = offset / BYTES_PER_WORD;
425 const u64 word_end = std::min(word_begin + num_query_words, NumWords());
426 const u64 page_limit = Common::DivCeil(offset + size, BYTES_PER_PAGE);
427 u64 page_index = (offset / BYTES_PER_PAGE) % PAGES_PER_WORD;
428 for (u64 word_index = word_begin; word_index < word_end; ++word_index, page_index = 0) {
429 const u64 word = state_words[word_index] & ~(gpu ? cpu_words[word_index] : 0);
430 if (word == 0) {
431 continue;
432 }
433 const u64 page_end = std::min((word_index + 1) * PAGES_PER_WORD, page_limit);
434 const u64 local_page_end = page_end % PAGES_PER_WORD;
435 const u64 page_end_shift = (PAGES_PER_WORD - local_page_end) % PAGES_PER_WORD;
436 if (((word >> page_index) << page_index) << page_end_shift != 0) {
437 return true;
438 }
439 }
440 return false;
441 }
442
443 /**
444 * Returns a begin end pair with the inclusive modified region
445 *
446 * @param offset Offset in bytes from the start of the buffer
447 * @param size Size in bytes of the region to query for modifications
448 *
449 * @tparam True to query GPU modified pages, false for CPU pages
450 */
451 template <bool gpu>
452 [[nodiscard]] std::pair<u64, u64> ModifiedRegion(u64 offset, u64 size) const noexcept {
453 const u64* const cpu_words = words.cpu.Pointer(IsShort());
454 const u64* const state_words = (gpu ? words.gpu : words.cpu).Pointer(IsShort());
455 const u64 num_query_words = size / BYTES_PER_WORD + 1;
456 const u64 word_begin = offset / BYTES_PER_WORD;
457 const u64 word_end = std::min(word_begin + num_query_words, NumWords());
458 const u64 page_base = offset / BYTES_PER_PAGE;
459 const u64 page_limit = Common::DivCeil(offset + size, BYTES_PER_PAGE);
460 u64 begin = std::numeric_limits<u64>::max();
461 u64 end = 0;
462 for (u64 word_index = word_begin; word_index < word_end; ++word_index) {
463 const u64 word = state_words[word_index] & ~(gpu ? cpu_words[word_index] : 0);
464 if (word == 0) {
465 continue;
466 }
467 const u64 local_page_begin = std::countr_zero(word);
468 const u64 local_page_end = PAGES_PER_WORD - std::countl_zero(word);
469 const u64 page_index = word_index * PAGES_PER_WORD;
470 const u64 page_begin = std::max(page_index + local_page_begin, page_base);
471 const u64 page_end = std::min(page_index + local_page_end, page_limit);
472 begin = std::min(begin, page_begin);
473 end = std::max(end, page_end);
474 }
475 static constexpr std::pair<u64, u64> EMPTY{0, 0};
476 return begin < end ? std::make_pair(begin * BYTES_PER_PAGE, end * BYTES_PER_PAGE) : EMPTY;
477 }
478
479 /// Returns the number of words of the buffer
480 [[nodiscard]] size_t NumWords() const noexcept {
481 return words.NumWords();
482 }
483
484 /// Returns true when the buffer fits in the small vector optimization
485 [[nodiscard]] bool IsShort() const noexcept {
486 return words.IsShort();
487 }
488
489 RasterizerInterface* rasterizer = nullptr;
490 VAddr cpu_addr = 0;
491 GpuCpuWords words;
492 BufferFlagBits flags{};
493};
494
495} // namespace VideoCommon
HIC SVNT DRACONES