dingusppc/devices/video/videoctrl.cpp
2022-05-21 14:51:27 +02:00

153 lines
4.5 KiB
C++

/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-21 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file Video Conroller base class implementation. */
#include "videoctrl.h"
#include <loguru.hpp>
#include <SDL.h>
#include <chrono>
#include <cinttypes>
VideoCtrlBase::VideoCtrlBase(int width, int height)
{
LOG_F(INFO, "Create display window...");
this->active_width = width;
this->active_height = height;
// Create display window
this->display_wnd = SDL_CreateWindow(
"DingusPPC Display",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
this->active_width,
this->active_height,
SDL_WINDOW_OPENGL
);
if (this->display_wnd == NULL) {
LOG_F(ERROR, "Display: SDL_CreateWindow failed with %s\n", SDL_GetError());
}
this->renderer = SDL_CreateRenderer(this->display_wnd, -1, SDL_RENDERER_ACCELERATED);
if (this->renderer == NULL) {
LOG_F(ERROR, "Display: SDL_CreateRenderer failed with %s\n", SDL_GetError());
}
SDL_SetRenderDrawColor(this->renderer, 0, 0, 0, 255);
SDL_RenderClear(this->renderer);
SDL_RenderPresent(this->renderer);
// Stupidly poll for 10 events.
// Otherwise no window will be shown on mac OS!
SDL_Event e;
for (int i = 0; i < 10; i++) {
SDL_PollEvent(&e);
}
this->disp_texture = SDL_CreateTexture(
this->renderer,
SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING,
width, height
);
if (this->disp_texture == NULL) {
LOG_F(ERROR, "Display: SDL_CreateTexture failed with %s\n", SDL_GetError());
}
}
VideoCtrlBase::~VideoCtrlBase()
{
if (this->disp_texture) {
SDL_DestroyTexture(this->disp_texture);
}
if (this->renderer) {
SDL_DestroyRenderer(this->renderer);
}
if (this->display_wnd) {
SDL_DestroyWindow(this->display_wnd);
}
}
void VideoCtrlBase::update_screen()
{
uint8_t* dst_buf;
int dst_pitch;
//auto start_time = std::chrono::steady_clock::now();
SDL_LockTexture(this->disp_texture, NULL, (void **)&dst_buf, &dst_pitch);
// texture update callback to get ARGB data from guest framebuffer
this->convert_fb_cb(dst_buf, dst_pitch);
SDL_UnlockTexture(this->disp_texture);
SDL_RenderClear(this->renderer);
SDL_RenderCopy(this->renderer, this->disp_texture, NULL, NULL);
SDL_RenderPresent(this->renderer);
// HW cursor data is stored at the beginning of the video memory
// HACK: use src_offset to recognize cursor data being ready
// Normally, we should check GEN_CUR_ENABLE bit in the GEN_TEST_CNTL register
//if (src_offset > 0x400 && READ_DWORD_LE_A(&this->block_io_regs[ATI_CUR_OFFSET])) {
// this->draw_hw_cursor(dst_buf + dst_pitch * 20 + 120, dst_pitch);
//}
//auto end_time = std::chrono::steady_clock::now();
//auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
//LOG_F(INFO, "Display uodate took: %lld ns", time_elapsed.count());
SDL_Delay(15);
}
void VideoCtrlBase::convert_frame_1bpp(uint8_t *dst_buf, int dst_pitch)
{
// TODO: implement me!
}
void VideoCtrlBase::convert_frame_8bpp(uint8_t *dst_buf, int dst_pitch)
{
uint8_t *src_buf, *src_row, *dst_row, pix;
int src_pitch;
src_buf = this->fb_ptr;
src_pitch = this->fb_pitch;
for (int h = 0; h < this->active_height; h++) {
src_row = &src_buf[h * src_pitch];
dst_row = &dst_buf[h * dst_pitch];
for (int x = 0; x < this->active_width; x++) {
pix = src_row[x];
dst_row[0] = this->palette[pix][2]; // B
dst_row[1] = this->palette[pix][1]; // G
dst_row[2] = this->palette[pix][0]; // R
dst_row[3] = 255; // Alpha
dst_row += 4;
}
}
}