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GPU: Implement "Crop Mode" (none, overscan, all borders)

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This commit is contained in:
Connor McLaughlin
2020-02-28 17:01:01 +10:00
parent 5df7fbd68c
commit fcc0ae9571
28 changed files with 491 additions and 337 deletions
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31
src/core/gpu.h
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@ -496,28 +496,32 @@ protected:
union
{
u32 display_address_start;
BitField<u32, u32, 0, 10> X;
BitField<u32, u32, 10, 9> Y;
BitField<u32, u16, 0, 10> X;
BitField<u32, u16, 10, 9> Y;
};
union
{
u32 horizontal_display_range;
BitField<u32, u32, 0, 12> X1;
BitField<u32, u32, 12, 12> X2;
BitField<u32, u16, 0, 12> X1;
BitField<u32, u16, 12, 12> X2;
};
union
{
u32 vertical_display_range;
BitField<u32, u32, 0, 10> Y1;
BitField<u32, u32, 10, 10> Y2;
BitField<u32, u16, 0, 10> Y1;
BitField<u32, u16, 10, 10> Y2;
};
} regs;
TickCount dot_clock_divider;
u16 dot_clock_divider;
u32 display_width;
u32 display_height;
u16 visible_display_width;
u16 visible_display_height;
u16 active_display_left;
u16 active_display_top;
u16 active_display_width;
u16 active_display_height;
TickCount horizontal_total;
TickCount horizontal_display_start;
@ -533,6 +537,15 @@ protected:
float display_aspect_ratio;
bool in_hblank;
bool in_vblank;
/// Returns a rectangle representing the active display region within the visible area of the screen, i.e. where the
/// VRAM texture should be "scanned out" to. Areas outside this region (the border) should be displayed as black.
Common::Rectangle<s32> GetActiveDisplayRectangle() const
{
return Common::Rectangle<s32>::FromExtents(
static_cast<s32>(ZeroExtend32(active_display_left)), static_cast<s32>(ZeroExtend32(active_display_top)),
static_cast<s32>(ZeroExtend32(active_display_width)), static_cast<s32>(ZeroExtend32(active_display_height)));
}
} m_crtc_state = {};
State m_state = State::Idle;