84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
#pragma once
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#include "../main.h"
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#include "color.h"
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#include "xcursor/xcursor.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// This defines a default target display mode for graphics_Init().
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#define HELOS_GRAPHICS_TARGET_MODE_WIDTH 1600
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#define HELOS_GRAPHICS_TARGET_MODE_HEIGHT 900
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typedef enum {
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graphics_PixelFormat_RGBA_8bit,
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graphics_PixelFormat_BGRA_8bit,
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} graphics_PixelFormat;
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typedef struct {
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int Width, Height;
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int PixelsPerLine;
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graphics_PixelFormat PixelFormat;
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} HelosGraphics_Mode;
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extern void * graphics_DeviceFramebuffer; // this is the framebuffer directly for the device via memory mapping.
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extern void * graphics_Framebuffer; // this is the double-buffered framebuffer (back buffer)
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extern uint64_t graphics_FramebufferSize;
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extern HelosGraphics_Mode graphics_SystemVideoMode; // system video mode
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extern xcursor_ChunkHeader_Image *graphics_Cursor; // mouse cursor image
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// Init() must be called prior to ExitBootServices()
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void graphics_Init();
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// bitsPerPixel does not count the alpha bits, i.e., is 24 on most modern monitors
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void graphics_GetSize(int *sizeX, int *sizeY, int *bitsPerPixel);
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void graphics_ClearBuffer(const HelosGraphics_Color *color);
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void graphics_SwapBuffer();
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void graphics_Invalidate(int left, int top, int width, int height); // Invalidates a rectangular region
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// graphics_SetPixel_RGB/BGR writes the given pixel to the framebuffer in RGB/BGR format.
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void graphics_SetPixel_RGB(int posX, int posY, const HelosGraphics_Color *color);
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void graphics_SetPixel_BGR(int posX, int posY, const HelosGraphics_Color *color);
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// graphics_SetPixel calls one of SetPixel_RGB/BGR according to the framebuffer format.
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static inline void graphics_SetPixel(int posX, int posY, const HelosGraphics_Color *color) {
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if (graphics_SystemVideoMode.PixelFormat == graphics_PixelFormat_BGRA_8bit)
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graphics_SetPixel_BGR(posX, posY, color);
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else if (graphics_SystemVideoMode.PixelFormat == graphics_PixelFormat_RGBA_8bit)
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graphics_SetPixel_RGB(posX, posY, color);
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}
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void graphics_FillPixel(int startX, int startY, int endX, int endY, const HelosGraphics_Color *color);
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extern int graphics_CursorX, graphics_CursorY;
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// graphics_Scroll scrolls the display vertically by scrollY pixels.
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void graphics_Scroll(int scrollY);
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// graphics_ElementSize handles size of an graphics element: scrolling, line breaking, etc.
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//
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// It does not change CursorX/Y, however. Neither does it call Invalidate().
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void graphics_ElementSize(int sizeX, int sizeY);
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void graphics_Newline(int advanceY);
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void console_WriteChar(const HelosGraphics_Color *color, uint32_t c);
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void console_Write(const HelosGraphics_Color *color, const uint32_t *str, int len);
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void console_WriteUTF16(const HelosGraphics_Color *color, const uint16_t *str, int len);
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void console_WriteASCII(const HelosGraphics_Color *color, const char *str, int len);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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