68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
#include "Display.hpp"
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#include "Game.hpp"
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Display::Display(Node* parent) : Node(parent) {}
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glm::ivec2 Display::get_window_size()
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{
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glm::ivec2 size;
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SDL_GetWindowSize(get_root()->window, &size.x, &size.y);
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return size;
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}
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void Display::get_screen_pixels(unsigned char* pixels, int w, int h, int x, int y)
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{
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if (get_root()->is_gl_context)
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{
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GLenum format;
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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format = GL_RGBA;
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#else
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format = GL_BGRA;
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#endif
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glReadPixels(x, y, w, h, format, GL_UNSIGNED_BYTE, pixels);
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}
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else
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{
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Uint32 format;
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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format = SDL_PIXELFORMAT_ABGR8888;
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#else
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format = SDL_PIXELFORMAT_ARGB8888;
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#endif
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SDL_RenderReadPixels(
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get_root()->renderer, NULL, format, pixels, bpp / 8 * w);
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}
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}
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SDL_Surface* Display::get_screen_surface()
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{
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glm::ivec2 size = get_window_size();
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unsigned char* pixels = new unsigned char[bpp / 8 * size.x * size.y];
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get_screen_pixels(pixels, size.x, size.y);
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SDL_Surface* surface = get_screen_surface_from_pixels(
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pixels, get_root()->is_gl_context);
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delete[] pixels;
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return surface;
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}
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SDL_Surface* Display::get_screen_surface_from_pixels(
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unsigned char* pixels, bool flip)
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{
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glm::ivec2 size = get_window_size();
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SDL_Surface* surface;
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if (flip)
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{
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SDL_Surface* pixel_surface = SDL_CreateRGBSurfaceFrom(
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pixels, size.x, size.y, bpp, bpp / 8 * size.x, 0, 0, 0, 0);
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surface = zoomSurface(pixel_surface, 1, -1, SMOOTHING_OFF);
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SDL_FreeSurface(pixel_surface);
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}
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else
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{
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surface = SDL_CreateRGBSurface(0, size.x, size.y, bpp, 0, 0, 0, 0);
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std::memcpy(surface->pixels, pixels, bpp / 8 * size.x * size.y);
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}
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return surface;
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}
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