Add measured frame cycles
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5e95b35900
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@ -30,8 +30,6 @@ namespace GPU {
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Regs g_regs;
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Memory::MemorySystem* g_memory;
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/// 268MHz CPU clocks / 60Hz frames per second
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const u64 frame_ticks = static_cast<u64>(BASE_CLOCK_RATE_ARM11 / SCREEN_REFRESH_RATE);
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/// Event id for CoreTiming
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static Core::TimingEventType* vblank_event;
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@ -12,6 +12,7 @@
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#include "common/bit_field.h"
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#include "common/common_funcs.h"
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#include "common/common_types.h"
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#include "core/core_timing.h"
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namespace Memory {
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class MemorySystem;
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@ -19,10 +20,12 @@ class MemorySystem;
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namespace GPU {
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// TODO(xperia64): This should be defined by the number of
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// ARM11 cycles per vblank interval once that value is measured
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// and not the other way around
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constexpr double SCREEN_REFRESH_RATE = 59.833997376556916;
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// Measured on hardware to be 2240568 timer cycles or 4481136 ARM11 cycles
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constexpr u64 frame_ticks = 4481136ull;
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// Refresh rate defined by ratio of ARM11 frequency to ARM11 ticks per frame
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// (268,111,856) / (4,481,136) = 59.83122493939037Hz
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constexpr double SCREEN_REFRESH_RATE = BASE_CLOCK_RATE_ARM11 / static_cast<double>(frame_ticks);
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// Returns index corresponding to the Regs member labeled by field_name
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#define GPU_REG_INDEX(field_name) (offsetof(GPU::Regs, field_name) / sizeof(u32))
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