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e128baca5e
Co-authored-by: Lydacious <81742991+lydacious@users.noreply.github.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
86 lines
3.4 KiB
C++
86 lines
3.4 KiB
C++
// Tests for video::MobileScaleBudget (runtime/video/scale_budget.cpp): Auto
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// internal resolution's budget on iPhones and iPads, chip by chip, and what
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// it makes of the phones' screens with video::AutoRenderScale. From the repo
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// root:
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// clang++ -std=c++20 -O2 -Iruntime tests/scale_budget_test.cpp runtime/video/scale_budget.cpp runtime/video/picture_fit.cpp -o build/scale_budget_test
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// build/scale_budget_test
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#include <video/picture_fit.h>
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#include <video/scale_budget.h>
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#include <cstdio>
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#include <cstring>
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using video::AutoRenderScale;
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using video::MobileScaleBudget;
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using video::ScaleBudget;
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static int g_failures = 0;
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#define CHECK(cond, ...) do { if (!(cond)) { g_failures++; printf(" FAIL %s:%d: %s: ", __FILE__, __LINE__, #cond); printf(__VA_ARGS__); printf("\n"); } } while (0)
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static void Budget(const char* gpu, unsigned want)
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{
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ScaleBudget b = MobileScaleBudget(gpu);
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printf("\"%s\": %u (%s)\n", gpu, b.pixels, b.reason);
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CHECK(b.pixels == want, "\"%s\": budget %u, want %u", gpu, b.pixels, want);
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CHECK(b.reason && std::strlen(b.reason) > 0, "\"%s\": no reason for the log", gpu);
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}
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// The scale Auto picks for a phone filling its screen (Hor+: the picture is
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// the whole swapchain) with the budget its GPU gets.
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static void Phone(const char* gpu, unsigned w, unsigned h, unsigned wantX, unsigned wantY)
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{
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unsigned sx = 0, sy = 0;
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AutoRenderScale(w, h, MobileScaleBudget(gpu).pixels, sx, sy);
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printf("\"%s\" on %ux%u: %ux%u\n", gpu, w, h, sx, sy);
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CHECK(sx == wantX && sy == wantY, "\"%s\" on %ux%u: %ux%u, want %ux%u", gpu, w, h, sx, sy, wantX, wantY);
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}
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int main()
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{
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printf("Measured chips:\n");
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Budget("Apple A20 Pro GPU", 1); // iPhone 18 Pro Max: serious thermal state at 1x1 within 6 minutes
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Budget("Apple A20 Pro", 1); // the same chip without Metal's " GPU"
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Budget("Apple A17 Pro GPU", 1); // iPhone 15 Pro Max: 2x2 is 36-40 ms of GPU a frame
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Budget("Apple A16 GPU", 1);
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Budget("Apple A15 GPU", 1);
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Budget("Apple M2 GPU", 1); // iPad Pro M2: 43-50 fps at 2x2
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printf("Chips not measured (1x1 until they are):\n");
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Budget("Apple A20 GPU", 1); // the iPhone 18's A20, not the Pro
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Budget("Apple A18 Pro GPU", 1);
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Budget("Apple A19 Pro GPU", 1);
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Budget("Apple A21 Pro GPU", 1); // a newer chip: not "A20 or later"
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Budget("Apple A22 Pro GPU", 1);
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Budget("Apple M4 GPU", 1);
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Budget("Apple M5 Pro GPU", 1);
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printf("Names that only look alike:\n");
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Budget("Apple A2 Pro GPU", 1); // "A2", not "A20"
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Budget("Apple A200 Pro GPU", 1);
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Budget("Apple A20 Pro Max GPU", 1); // another tier
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Budget("Apple A20 Promax GPU", 1);
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Budget("Apple A20X Pro GPU", 1);
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Budget("Apple A Pro GPU", 1);
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Budget("Apple GPU", 1);
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Budget("Apple ", 1);
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Budget("", 1);
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Budget("AMD Radeon RX 7600 (RADV NAVI33)", 1);
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Budget("A20 Pro GPU", 1); // not Metal's name
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Budget("Apple A20 Pro GPU (simulated)", 1);
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printf("The phones' screens:\n");
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Phone("Apple A20 Pro GPU", 2868, 1320, 1, 1); // iPhone 18 Pro Max: 1280x720 (2x2 would be 2560x1440)
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Phone("Apple A17 Pro GPU", 2796, 1290, 1, 1); // iPhone 15 Pro Max: 1280x720
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Phone("Apple A20 GPU", 2622, 1206, 1, 1);
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// Present Scale 75% (a smaller drawable).
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Phone("Apple A20 Pro GPU", 2151, 990, 1, 1);
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if (g_failures)
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{
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printf("%d FAILED\n", g_failures);
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return 1;
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}
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printf("all passed\n");
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return 0;
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}
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