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sm64pc/src/pc/gfx/gfx_sdl2.c

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#ifdef WAPI_SDL2
#ifdef __MINGW32__
#define FOR_WINDOWS 1
#else
#define FOR_WINDOWS 0
#endif
#if FOR_WINDOWS
#define GLEW_STATIC
#include <GL/glew.h>
#include <SDL2/SDL.h>
#define GL_GLEXT_PROTOTYPES 1
#include <SDL2/SDL_opengl.h>
#else
#include <SDL2/SDL.h>
#define GL_GLEXT_PROTOTYPES 1
#ifdef OSX_BUILD
#include <SDL2/SDL_opengl.h>
#else
#include <SDL2/SDL_opengles2.h>
#endif
#endif // End of OS-Specific GL defines
#include <stdio.h>
#include "gfx_window_manager_api.h"
#include "gfx_screen_config.h"
#include "../pc_main.h"
#include "../configfile.h"
#include "../cliopts.h"
#include "src/pc/controller/controller_keyboard.h"
// TODO: figure out if this shit even works
#ifdef VERSION_EU
# define FRAMERATE 25
#else
# define FRAMERATE 30
#endif
static const Uint32 FRAME_TIME = 1000 / FRAMERATE;
static SDL_Window *wnd;
static SDL_GLContext ctx = NULL;
static int inverted_scancode_table[512];
static kb_callback_t kb_key_down = NULL;
static kb_callback_t kb_key_up = NULL;
static void (*kb_all_keys_up)(void) = NULL;
const SDL_Scancode windows_scancode_table[] = {
/* 0 1 2 3 4 5 6 7 */
/* 8 9 A B C D E F */
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_ESCAPE, SDL_SCANCODE_1, SDL_SCANCODE_2, SDL_SCANCODE_3, SDL_SCANCODE_4, SDL_SCANCODE_5, SDL_SCANCODE_6, /* 0 */
SDL_SCANCODE_7, SDL_SCANCODE_8, SDL_SCANCODE_9, SDL_SCANCODE_0, SDL_SCANCODE_MINUS, SDL_SCANCODE_EQUALS, SDL_SCANCODE_BACKSPACE, SDL_SCANCODE_TAB, /* 0 */
SDL_SCANCODE_Q, SDL_SCANCODE_W, SDL_SCANCODE_E, SDL_SCANCODE_R, SDL_SCANCODE_T, SDL_SCANCODE_Y, SDL_SCANCODE_U, SDL_SCANCODE_I, /* 1 */
SDL_SCANCODE_O, SDL_SCANCODE_P, SDL_SCANCODE_LEFTBRACKET, SDL_SCANCODE_RIGHTBRACKET, SDL_SCANCODE_RETURN, SDL_SCANCODE_LCTRL, SDL_SCANCODE_A, SDL_SCANCODE_S, /* 1 */
SDL_SCANCODE_D, SDL_SCANCODE_F, SDL_SCANCODE_G, SDL_SCANCODE_H, SDL_SCANCODE_J, SDL_SCANCODE_K, SDL_SCANCODE_L, SDL_SCANCODE_SEMICOLON, /* 2 */
SDL_SCANCODE_APOSTROPHE, SDL_SCANCODE_GRAVE, SDL_SCANCODE_LSHIFT, SDL_SCANCODE_BACKSLASH, SDL_SCANCODE_Z, SDL_SCANCODE_X, SDL_SCANCODE_C, SDL_SCANCODE_V, /* 2 */
SDL_SCANCODE_B, SDL_SCANCODE_N, SDL_SCANCODE_M, SDL_SCANCODE_COMMA, SDL_SCANCODE_PERIOD, SDL_SCANCODE_SLASH, SDL_SCANCODE_RSHIFT, SDL_SCANCODE_PRINTSCREEN,/* 3 */
SDL_SCANCODE_LALT, SDL_SCANCODE_SPACE, SDL_SCANCODE_CAPSLOCK, SDL_SCANCODE_F1, SDL_SCANCODE_F2, SDL_SCANCODE_F3, SDL_SCANCODE_F4, SDL_SCANCODE_F5, /* 3 */
SDL_SCANCODE_F6, SDL_SCANCODE_F7, SDL_SCANCODE_F8, SDL_SCANCODE_F9, SDL_SCANCODE_F10, SDL_SCANCODE_NUMLOCKCLEAR, SDL_SCANCODE_SCROLLLOCK, SDL_SCANCODE_HOME, /* 4 */
SDL_SCANCODE_UP, SDL_SCANCODE_PAGEUP, SDL_SCANCODE_KP_MINUS, SDL_SCANCODE_LEFT, SDL_SCANCODE_KP_5, SDL_SCANCODE_RIGHT, SDL_SCANCODE_KP_PLUS, SDL_SCANCODE_END, /* 4 */
SDL_SCANCODE_DOWN, SDL_SCANCODE_PAGEDOWN, SDL_SCANCODE_INSERT, SDL_SCANCODE_DELETE, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_NONUSBACKSLASH, SDL_SCANCODE_F11, /* 5 */
SDL_SCANCODE_F12, SDL_SCANCODE_PAUSE, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_LGUI, SDL_SCANCODE_RGUI, SDL_SCANCODE_APPLICATION, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, /* 5 */
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_F13, SDL_SCANCODE_F14, SDL_SCANCODE_F15, SDL_SCANCODE_F16, /* 6 */
SDL_SCANCODE_F17, SDL_SCANCODE_F18, SDL_SCANCODE_F19, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, /* 6 */
SDL_SCANCODE_INTERNATIONAL2, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_INTERNATIONAL1, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN, /* 7 */
SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_INTERNATIONAL4, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_INTERNATIONAL5, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_INTERNATIONAL3, SDL_SCANCODE_UNKNOWN, SDL_SCANCODE_UNKNOWN /* 7 */
};
const SDL_Scancode scancode_rmapping_extended[][2] = {
{SDL_SCANCODE_KP_ENTER, SDL_SCANCODE_RETURN},
{SDL_SCANCODE_RALT, SDL_SCANCODE_LALT},
{SDL_SCANCODE_RCTRL, SDL_SCANCODE_LCTRL},
{SDL_SCANCODE_KP_DIVIDE, SDL_SCANCODE_SLASH},
//{SDL_SCANCODE_KP_PLUS, SDL_SCANCODE_CAPSLOCK}
};
const SDL_Scancode scancode_rmapping_nonextended[][2] = {
{SDL_SCANCODE_KP_7, SDL_SCANCODE_HOME},
{SDL_SCANCODE_KP_8, SDL_SCANCODE_UP},
{SDL_SCANCODE_KP_9, SDL_SCANCODE_PAGEUP},
{SDL_SCANCODE_KP_4, SDL_SCANCODE_LEFT},
{SDL_SCANCODE_KP_6, SDL_SCANCODE_RIGHT},
{SDL_SCANCODE_KP_1, SDL_SCANCODE_END},
{SDL_SCANCODE_KP_2, SDL_SCANCODE_DOWN},
{SDL_SCANCODE_KP_3, SDL_SCANCODE_PAGEDOWN},
{SDL_SCANCODE_KP_0, SDL_SCANCODE_INSERT},
{SDL_SCANCODE_KP_PERIOD, SDL_SCANCODE_DELETE},
{SDL_SCANCODE_KP_MULTIPLY, SDL_SCANCODE_PRINTSCREEN}
};
#define IS_FULLSCREEN() ((SDL_GetWindowFlags(wnd) & SDL_WINDOW_FULLSCREEN_DESKTOP) != 0)
static void gfx_sdl_set_fullscreen() {
if (configWindow.reset)
configWindow.fullscreen = false;
if (configWindow.fullscreen == IS_FULLSCREEN())
return;
if (configWindow.fullscreen) {
SDL_SetWindowFullscreen(wnd, SDL_WINDOW_FULLSCREEN_DESKTOP);
SDL_ShowCursor(SDL_DISABLE);
} else {
SDL_SetWindowFullscreen(wnd, 0);
SDL_ShowCursor(SDL_ENABLE);
configWindow.exiting_fullscreen = true;
}
}
static void gfx_sdl_reset_dimension_and_pos(void) {
if (configWindow.exiting_fullscreen)
configWindow.exiting_fullscreen = false;
if (configWindow.reset) {
configWindow.x = WAPI_WIN_CENTERPOS;
configWindow.y = WAPI_WIN_CENTERPOS;
configWindow.w = DESIRED_SCREEN_WIDTH;
configWindow.h = DESIRED_SCREEN_HEIGHT;
configWindow.reset = false;
} else if (!configWindow.settings_changed) {
return;
}
int xpos = (configWindow.x == WAPI_WIN_CENTERPOS) ? SDL_WINDOWPOS_CENTERED : configWindow.x;
int ypos = (configWindow.y == WAPI_WIN_CENTERPOS) ? SDL_WINDOWPOS_CENTERED : configWindow.y;
SDL_SetWindowSize(wnd, configWindow.w, configWindow.h);
SDL_SetWindowPosition(wnd, xpos, ypos);
SDL_GL_SetSwapInterval(configWindow.vsync); // in case vsync changed
}
static void gfx_sdl_init(const char *window_title) {
SDL_Init(SDL_INIT_VIDEO);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
#ifdef USE_GLES
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2); // These attributes allow for hardware acceleration on RPis.
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
#endif
//SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
//SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
int xpos = (configWindow.x == WAPI_WIN_CENTERPOS) ? SDL_WINDOWPOS_CENTERED : configWindow.x;
int ypos = (configWindow.y == WAPI_WIN_CENTERPOS) ? SDL_WINDOWPOS_CENTERED : configWindow.y;
wnd = SDL_CreateWindow(
window_title,
xpos, ypos, configWindow.w, configWindow.h,
SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE
);
ctx = SDL_GL_CreateContext(wnd);
SDL_GL_SetSwapInterval(configWindow.vsync);
gfx_sdl_set_fullscreen();
for (size_t i = 0; i < sizeof(windows_scancode_table) / sizeof(SDL_Scancode); i++) {
inverted_scancode_table[windows_scancode_table[i]] = i;
}
for (size_t i = 0; i < sizeof(scancode_rmapping_extended) / sizeof(scancode_rmapping_extended[0]); i++) {
inverted_scancode_table[scancode_rmapping_extended[i][0]] = inverted_scancode_table[scancode_rmapping_extended[i][1]] + 0x100;
}
for (size_t i = 0; i < sizeof(scancode_rmapping_nonextended) / sizeof(scancode_rmapping_nonextended[0]); i++) {
inverted_scancode_table[scancode_rmapping_nonextended[i][0]] = inverted_scancode_table[scancode_rmapping_nonextended[i][1]];
inverted_scancode_table[scancode_rmapping_nonextended[i][1]] += 0x100;
}
}
static void gfx_sdl_main_loop(void (*run_one_game_iter)(void)) {
Uint32 t = SDL_GetTicks();
run_one_game_iter();
t = SDL_GetTicks() - t;
if (t < FRAME_TIME && configWindow.vsync <= 1)
SDL_Delay(FRAME_TIME - t);
}
static void gfx_sdl_get_dimensions(uint32_t *width, uint32_t *height) {
SDL_GetWindowSize(wnd, width, height);
}
static int translate_scancode(int scancode) {
if (scancode < 512) {
return inverted_scancode_table[scancode];
} else {
return 0;
}
}
static void gfx_sdl_onkeydown(int scancode) {
if (kb_key_down)
kb_key_down(translate_scancode(scancode));
const Uint8 *state = SDL_GetKeyboardState(NULL);
if (state[SDL_SCANCODE_LALT] && state[SDL_SCANCODE_RETURN]) {
configWindow.fullscreen = !configWindow.fullscreen;
configWindow.settings_changed = true;
}
}
static void gfx_sdl_onkeyup(int scancode) {
if (kb_key_up)
kb_key_up(translate_scancode(scancode));
}
static void gfx_sdl_handle_events(void) {
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch (event.type) {
#ifndef TARGET_WEB
// Scancodes are broken in Emscripten SDL2: https://bugzilla.libsdl.org/show_bug.cgi?id=3259
case SDL_KEYDOWN:
gfx_sdl_onkeydown(event.key.keysym.scancode);
break;
case SDL_KEYUP:
gfx_sdl_onkeyup(event.key.keysym.scancode);
break;
#endif
case SDL_WINDOWEVENT: // TODO: Check if this makes sense to be included in the Web build
if (!IS_FULLSCREEN()) {
switch (event.window.event) {
case SDL_WINDOWEVENT_MOVED:
if (!configWindow.exiting_fullscreen) {
if (event.window.data1 >= 0) configWindow.x = event.window.data1;
if (event.window.data2 >= 0) configWindow.y = event.window.data2;
}
break;
case SDL_WINDOWEVENT_SIZE_CHANGED:
configWindow.w = event.window.data1;
configWindow.h = event.window.data2;
break;
}
}
break;
case SDL_QUIT:
game_exit();
break;
}
}
if (configWindow.settings_changed) {
gfx_sdl_set_fullscreen();
gfx_sdl_reset_dimension_and_pos();
configWindow.settings_changed = false;
}
}
static void gfx_sdl_set_keyboard_callbacks(kb_callback_t on_key_down, kb_callback_t on_key_up, void (*on_all_keys_up)(void)) {
kb_key_down = on_key_down;
kb_key_up = on_key_up;
kb_all_keys_up = on_all_keys_up;
}
static bool gfx_sdl_start_frame(void) {
return true;
}
static void gfx_sdl_swap_buffers_begin(void) {
SDL_GL_SwapWindow(wnd);
}
static void gfx_sdl_swap_buffers_end(void) {
}
static double gfx_sdl_get_time(void) {
return 0.0;
}
static void gfx_sdl_shutdown(void) {
if (SDL_WasInit(0)) {
if (ctx) { SDL_GL_DeleteContext(ctx); ctx = NULL; }
if (wnd) { SDL_DestroyWindow(wnd); wnd = NULL; }
SDL_Quit();
}
}
struct GfxWindowManagerAPI gfx_sdl = {
gfx_sdl_init,
gfx_sdl_set_keyboard_callbacks,
gfx_sdl_main_loop,
gfx_sdl_get_dimensions,
gfx_sdl_handle_events,
gfx_sdl_start_frame,
gfx_sdl_swap_buffers_begin,
gfx_sdl_swap_buffers_end,
gfx_sdl_get_time,
gfx_sdl_shutdown
};
#endif // BACKEND_WM
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