OXYGENHUB
◆ main openmsx / src / video / v9990 / V9990SDLRasterizer.hh
4.5 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#ifndef V9990SDLRASTERIZER_HH
2 
#define V9990SDLRASTERIZER_HH
3
4 
#include "V9990BitmapConverter.hh"
5 
#include "V9990PxConverter.hh"
6 
#include "V9990Rasterizer.hh"
7
8 
#include "Observer.hh"
9
10 
#include <array>
11 
#include <cstdint>
12 
#include <memory>
13
14 
namespace openmsx {
15
16 
class Display;
17 
class V9990;
18 
class V9990VRAM;
19 
class RawFrame;
20 
class OutputSurface;
21 
class RenderSettings;
22 
class Setting;
23 
class PostProcessor;
24
25 
/** Rasterizer using SDL.
26 
  */
27 
class V9990SDLRasterizer final : public V9990Rasterizer
28 
                               , private Observer<Setting>
29 
{
30 
public:
31 
	using Pixel = uint32_t;
32
33 
	V9990SDLRasterizer(
34 
		V9990& vdp, Display& display, OutputSurface& screen,
35 
		std::unique_ptr<PostProcessor> postProcessor);
36 
	V9990SDLRasterizer(const V9990SDLRasterizer&) = delete;
37 
	V9990SDLRasterizer(V9990SDLRasterizer&&) = delete;
38 
	V9990SDLRasterizer& operator=(const V9990SDLRasterizer&) = delete;
39 
	V9990SDLRasterizer& operator=(V9990SDLRasterizer&&) = delete;
40 
	~V9990SDLRasterizer() override;
41
42 
	// Rasterizer interface:
43 
	[[nodiscard]] PostProcessor* getPostProcessor() const override;
44 
	[[nodiscard]] bool isActive() override;
45 
	void reset() override;
46 
	void frameStart() override;
47 
	void frameEnd(EmuTime time) override;
48 
	void setDisplayMode(V9990DisplayMode displayMode) override;
49 
	void setColorMode(V9990ColorMode colorMode) override;
50 
	void setPalette(int index, uint8_t r, uint8_t g, uint8_t b, bool ys) override;
51 
	void setSuperimpose(bool enabled) override;
52 
	void drawBorder(int fromX, int fromY, int limitX, int limitY) override;
53 
	void drawDisplay(int fromX, int fromY, int toX, int toY,
54 
	                 int displayX,
55 
	                 int displayY, int displayYA, int displayYB) override;
56 
	[[nodiscard]] bool isRecording() const override;
57
58 
	/** Fill the palettes.
59 
	  */
60 
	void preCalcPalettes();
61 
	void resetPalette();
62
63 
	void drawP1Mode(int fromX, int fromY, int displayX,
64 
	                int displayY, int displayYA, int displayYB,
65 
	                int displayWidth, int displayHeight, bool drawSprites);
66 
	void drawP2Mode(int fromX, int fromY, int displayX,
67 
	                int displayY, int displayYA,
68 
	                int displayWidth, int displayHeight, bool drawSprites);
69 
	void drawBxMode(int fromX, int fromY, int displayX,
70 
	                int displayY, int displayYA,
71 
	                int displayWidth, int displayHeight, bool drawSprites);
72
73 
	// Observer<Setting>
74 
	void update(const Setting& setting) noexcept override;
75
76 
private:
77 
	/** screen width for SDLLo
78 
	  */
79 
	static constexpr int SCREEN_WIDTH  = 320;
80
81 
	/** screen height for SDLLo
82 
	  */
83 
	static constexpr int SCREEN_HEIGHT = 240;
84
85 
	/** The VDP of which the video output is being rendered.
86 
	  */
87 
	V9990& vdp;
88
89 
	/** The VRAM whose contents are rendered.
90 
	  */
91 
	V9990VRAM& vram;
92
93 
	/** The surface which is visible to the user.
94 
	  */
95 
	OutputSurface& screen;
96
97 
	/** The next frame as it is delivered by the VDP, work in progress.
98 
	  */
99 
	std::unique_ptr<RawFrame> workFrame;
100
101 
	/** The current renderer settings (gamma, brightness, contrast)
102 
	  */
103 
	RenderSettings& renderSettings;
104
105 
	/** Line to render at top of display.
106 
	  * After all, our screen is 240 lines while display is 262 or 313.
107 
	  */
108 
	int lineRenderTop;
109
110 
	/** First display column to draw.  Since the width of the VDP lines <=
111 
	  * the screen width, colZero is <= 0. The non-displaying parts of the
112 
	  * screen will be filled as border.
113 
	  */
114 
	int colZero;
115
116 
	/** The current screen mode
117 
	  */
118 
	V9990DisplayMode displayMode = V9990DisplayMode::P1; // dummy value
119 
	V9990ColorMode   colorMode   = V9990ColorMode::PP; //   avoid UMR
120
121 
	/** Palette containing the complete V9990 Color space
122 
	  */
123 
	std::array<Pixel, 32768> palette32768;
124
125 
	/** The 256 color palette. A fixed subset of the palette32768.
126 
	  */
127 
	std::array<Pixel, 256> palette256;         // from index to host Pixel color
128 
	std::array<int16_t, 256> palette256_32768; // from index to 15bpp V9990 color
129 
	// invariant: palette256[i] == palette32768[palette256_32768[i]]
130
131 
	/** The 64 palette entries of the VDP - a subset of the palette32768.
132 
	  * These are colors influenced by the palette IO ports and registers
133 
	  */
134 
	std::array<Pixel, 64> palette64;         // from index to host Pixel color
135 
	std::array<int16_t, 64> palette64_32768; // from index to 15bpp V9990 color
136 
	// invariant: palette64[i] == palette32768[palette64_32768[i]]
137
138 
	/** The video post processor which displays the frames produced by this
139 
	  *  rasterizer.
140 
	  */
141 
	const std::unique_ptr<PostProcessor> postProcessor;
142
143 
	V9990BitmapConverter bitmapConverter;
144 
	V9990P1Converter p1Converter;
145 
	V9990P2Converter p2Converter;
146 
};
147
148 
} // namespace openmsx
149
150 
#endif