display.cpp

#include "config.h"
#include "display.h"

#include <cstring>

#define SCREEN_SCALING 2

Display::Display(Graphics &graphics) : m_graphics(graphics) {
	SDL_Init(SDL_INIT_VIDEO);
	m_sdlWindow = SDL_CreateWindow("Shiro", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 160 * SCREEN_SCALING, 144 * SCREEN_SCALING, SDL_WINDOW_VULKAN);
	m_sdlRenderer = SDL_CreateRenderer(m_sdlWindow, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
	m_sdlTexture = SDL_CreateTexture(m_sdlRenderer,SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 160, 144);

	if (Config::getInstance().s_showSpriteDebug)
	{
		m_sdlWindowSpriteDebug = SDL_CreateWindow("DEBUG - OAM", SDL_WINDOWPOS_CENTERED, 400, 8 * 40, 16, SDL_WINDOW_VULKAN);
		m_sdlRendererSpriteDebug = SDL_CreateRenderer(m_sdlWindowSpriteDebug, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
		m_sdlTextureSpriteDebug = SDL_CreateTexture(m_sdlRendererSpriteDebug, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 8 * 40, 16);
	}
}

Display::~Display() {
	SDL_DestroyTexture(m_sdlTexture);
	SDL_DestroyRenderer(m_sdlRenderer);
	SDL_DestroyWindow(m_sdlWindow);
	if (Config::getInstance().s_showSpriteDebug)
	{
		SDL_DestroyTexture(m_sdlTextureSpriteDebug);
		SDL_DestroyRenderer(m_sdlRendererSpriteDebug);
		SDL_DestroyWindow(m_sdlWindowSpriteDebug);
	}
	SDL_Quit();
}


void Display::render() {

	int pitch;
	void * screenTexture;
	SDL_LockTexture(m_sdlTexture, NULL, &screenTexture, &pitch);

	std::memcpy(screenTexture, m_graphics.getScreenBuffer(), m_graphics.getScreenBufferSize());

	//SDL_RenderClear(m_sdlRenderer);
	SDL_RenderCopy(m_sdlRenderer, m_sdlTexture, NULL, NULL);
	SDL_RenderPresent(m_sdlRenderer);

	SDL_UnlockTexture(m_sdlTexture);
}

void Display::renderSpriteDebug() {

	int pitch;
	void * spriteDebugTexture;
	Uint32 window_flags = SDL_GetWindowFlags(m_sdlWindowSpriteDebug);

	if (window_flags & SDL_WINDOW_HIDDEN)
		return;

	SDL_LockTexture(m_sdlTextureSpriteDebug, NULL, &spriteDebugTexture, &pitch);

	std::memcpy(spriteDebugTexture, m_graphics.getSpriteDebugBuffer(), m_graphics.getSpriteDebugBufferSize());

	SDL_RenderCopy(m_sdlRendererSpriteDebug, m_sdlTextureSpriteDebug, NULL, NULL);
	SDL_RenderPresent(m_sdlRendererSpriteDebug);

	SDL_UnlockTexture(m_sdlTextureSpriteDebug);
}

void Display::toggleOAMWindow()
{
	Uint32 window_flags = SDL_GetWindowFlags(m_sdlWindowSpriteDebug);

	if (window_flags & SDL_WINDOW_HIDDEN)
		SDL_ShowWindow(m_sdlWindowSpriteDebug);
	else
		SDL_HideWindow(m_sdlWindowSpriteDebug);
}