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GPU/HW: Track dirty area of VRAM shadow texture via drawing area

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This commit is contained in:
Connor McLaughlin
2019-11-05 19:19:49 +10:00
parent 65197d4350
commit afbec85f89
9 changed files with 95 additions and 117 deletions
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27
src/core/gpu.h
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@ -1,5 +1,6 @@
#pragma once
#include "common/bitfield.h"
#include "common/rectangle.h"
#include "timers.h"
#include "types.h"
#include <array>
@ -289,8 +290,6 @@ protected:
// Rendering in the backend
virtual void UpdateDisplay();
virtual void UpdateDrawingArea();
virtual void UpdateDrawingOffset();
virtual void ReadVRAM(u32 x, u32 y, u32 width, u32 height, void* buffer);
virtual void FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color);
virtual void UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data);
@ -370,6 +369,21 @@ protected:
(static_cast<u8>(TextureMode::Palette4Bit) | static_cast<u8>(TextureMode::Palette8Bit))) != 0;
}
/// Returns a rectangle comprising the texture page area.
Common::Rectangle<u32> GetTexturePageRectangle() const
{
return Common::Rectangle<u32>::FromExtents(texture_page_x, texture_page_y, TEXTURE_PAGE_WIDTH,
TEXTURE_PAGE_HEIGHT);
}
/// Returns a rectangle comprising the texture palette area.
Common::Rectangle<u32> GetTexturePaletteRectangle() const
{
static constexpr std::array<u32, 4> palette_widths = {{16, 256, 0, 0}};
return Common::Rectangle<u32>::FromExtents(texture_palette_x, texture_palette_y,
palette_widths[static_cast<u8>(texture_mode) & 3], 1);
}
bool IsTexturePageChanged() const { return texture_page_changed; }
void ClearTexturePageChangedFlag() { texture_page_changed = false; }
@ -384,11 +398,7 @@ protected:
void SetTextureWindow(u32 value);
} m_render_state = {};
struct DrawingArea
{
u32 left, top;
u32 right, bottom;
} m_drawing_area = {};
Common::Rectangle<u32> m_drawing_area;
struct DrawingOffset
{
@ -396,6 +406,9 @@ protected:
s32 y;
} m_drawing_offset = {};
bool m_drawing_area_changed = false;
bool m_drawing_offset_changed = false;
struct CRTCState
{
struct Regs