158 lines
4.3 KiB
C++
158 lines
4.3 KiB
C++
#include <devices/video/display.h>
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#include <SDL.h>
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#include <loguru.hpp>
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class Display::Impl {
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public:
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bool resizing = false;
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uint32_t disp_wnd_id = 0;
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SDL_Window* display_wnd = 0;
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SDL_Renderer* renderer = 0;
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SDL_Texture* disp_texture = 0;
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SDL_Texture* cursor_texture = 0;
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SDL_Rect cursor_rect; // destination rectangle for cursor drawing
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};
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Display::Display(): impl(std::make_unique<Impl>())
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{
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}
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Display::~Display()
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{
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if (impl->cursor_texture) {
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SDL_DestroyTexture(impl->cursor_texture);
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}
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if (impl->disp_texture) {
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SDL_DestroyTexture(impl->disp_texture);
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}
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if (impl->renderer) {
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SDL_DestroyRenderer(impl->renderer);
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}
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if (impl->display_wnd) {
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SDL_DestroyWindow(impl->display_wnd);
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}
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}
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bool Display::configure(int width, int height)
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{
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bool is_initialization = false;
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if (!impl->display_wnd) { // create display window
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impl->display_wnd = SDL_CreateWindow(
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"DingusPPC Display",
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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width, height,
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SDL_WINDOW_OPENGL
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);
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impl->disp_wnd_id = SDL_GetWindowID(impl->display_wnd);
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if (impl->display_wnd == NULL) {
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ABORT_F("Display: SDL_CreateWindow failed with %s", SDL_GetError());
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}
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impl->renderer = SDL_CreateRenderer(impl->display_wnd, -1, SDL_RENDERER_ACCELERATED);
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if (impl->renderer == NULL) {
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ABORT_F("Display: SDL_CreateRenderer failed with %s", SDL_GetError());
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}
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is_initialization = true;
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} else { // resize display window
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SDL_SetWindowSize(impl->display_wnd, width, height);
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impl->resizing = true;
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}
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if (impl->disp_texture) {
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SDL_DestroyTexture(impl->disp_texture);
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}
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impl->disp_texture = SDL_CreateTexture(
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impl->renderer,
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SDL_PIXELFORMAT_ARGB8888,
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SDL_TEXTUREACCESS_STREAMING,
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width, height
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);
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if (impl->disp_texture == NULL) {
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ABORT_F("Display: SDL_CreateTexture failed with %s", SDL_GetError());
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}
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return is_initialization;
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}
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void Display::handle_events(const WindowEvent& wnd_event)
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{
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if (wnd_event.sub_type == SDL_WINDOWEVENT_SIZE_CHANGED &&
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wnd_event.window_id == impl->disp_wnd_id)
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impl->resizing = false;
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}
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void Display::blank()
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{
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SDL_SetRenderDrawColor(impl->renderer, 0, 0, 0, 255);
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SDL_RenderClear(impl->renderer);
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SDL_RenderPresent(impl->renderer);
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}
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void Display::update(std::function<void(uint8_t *dst_buf, int dst_pitch)> convert_fb_cb, bool draw_hw_cursor, int cursor_x, int cursor_y)
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{
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if (impl->resizing)
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return;
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uint8_t* dst_buf;
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int dst_pitch;
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SDL_LockTexture(impl->disp_texture, NULL, (void **)&dst_buf, &dst_pitch);
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// texture update callback to get ARGB data from guest framebuffer
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convert_fb_cb(dst_buf, dst_pitch);
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SDL_UnlockTexture(impl->disp_texture);
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SDL_RenderClear(impl->renderer);
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SDL_RenderCopy(impl->renderer, impl->disp_texture, NULL, NULL);
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// draw HW cursor if enabled
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if (draw_hw_cursor) {
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impl->cursor_rect.x = cursor_x;
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impl->cursor_rect.y = cursor_y;
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SDL_RenderCopy(impl->renderer, impl->cursor_texture, NULL, &impl->cursor_rect);
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}
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SDL_RenderPresent(impl->renderer);
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}
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void Display::setup_hw_cursor(std::function<void(uint8_t *dst_buf, int dst_pitch)> draw_hw_cursor, int cursor_width, int cursor_height)
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{
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uint8_t* dst_buf;
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int dst_pitch;
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if (impl->cursor_texture) {
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SDL_DestroyTexture(impl->cursor_texture);
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}
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impl->cursor_texture = SDL_CreateTexture(
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impl->renderer,
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SDL_PIXELFORMAT_ARGB8888,
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SDL_TEXTUREACCESS_STREAMING,
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cursor_width, cursor_height
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);
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if (impl->cursor_texture == NULL) {
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ABORT_F("SDL_CreateTexture for HW cursor failed with %s", SDL_GetError());
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}
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SDL_LockTexture(impl->cursor_texture, NULL, (void **)&dst_buf, &dst_pitch);
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SDL_SetTextureBlendMode(impl->cursor_texture, SDL_BLENDMODE_BLEND);
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draw_hw_cursor(dst_buf, dst_pitch);
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SDL_UnlockTexture(impl->cursor_texture);
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impl->cursor_rect.x = 0;
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impl->cursor_rect.y = 0;
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impl->cursor_rect.w = cursor_width;
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impl->cursor_rect.h = cursor_height;
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}
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