1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_N3DS
#include "../SDL_sysvideo.h"
#include "../../SDL_properties_c.h"
#include "SDL_n3dsframebuffer_c.h"
#include "SDL_n3dsvideo.h"
#define N3DS_SURFACE "SDL.internal.window.surface"
typedef struct
{
int width, height;
} Dimensions;
static void CopyFramebuffertoN3DS_16(u16 *dest, const Dimensions dest_dim, const u16 *source, const Dimensions source_dim);
static void CopyFramebuffertoN3DS_24(u8 *dest, const Dimensions dest_dim, const u8 *source, const Dimensions source_dim);
static void CopyFramebuffertoN3DS_32(u32 *dest, const Dimensions dest_dim, const u32 *source, const Dimensions source_dim);
static int GetDestOffset(int x, int y, int dest_width);
static int GetSourceOffset(int x, int y, int source_width);
static void FlushN3DSBuffer(const void *buffer, u32 bufsize, gfxScreen_t screen);
bool SDL_N3DS_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch)
{
SDL_Surface *framebuffer;
const SDL_DisplayMode *mode;
int w, h;
SDL_N3DS_DestroyWindowFramebuffer(_this, window);
mode = SDL_GetCurrentDisplayMode(SDL_GetDisplayForWindow(window));
SDL_GetWindowSizeInPixels(window, &w, &h);
framebuffer = SDL_CreateSurface(w, h, mode->format);
if (!framebuffer) {
return false;
}
SDL_SetSurfaceProperty(SDL_GetWindowProperties(window), N3DS_SURFACE, framebuffer);
*format = mode->format;
*pixels = framebuffer->pixels;
*pitch = framebuffer->pitch;
return true;
}
bool SDL_N3DS_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects)
{
SDL_WindowData *drv_data = window->internal;
SDL_Surface *surface;
u16 width, height;
void *framebuffer;
u32 bufsize;
surface = (SDL_Surface *)SDL_GetPointerProperty(SDL_GetWindowProperties(window), N3DS_SURFACE, NULL);
if (!surface) {
return SDL_SetError("%s: Unable to get the window surface.", __func__);
}
// Get the N3DS internal framebuffer and its size
framebuffer = gfxGetFramebuffer(drv_data->screen, GFX_LEFT, &width, &height);
bufsize = width * height * 4;
if (SDL_BYTESPERPIXEL(surface->format) == 2)
CopyFramebuffertoN3DS_16(framebuffer, (Dimensions){ width, height },
surface->pixels, (Dimensions){ surface->w, surface->h });
else if (SDL_BYTESPERPIXEL(surface->format) == 3)
CopyFramebuffertoN3DS_24(framebuffer, (Dimensions){ width, height },
surface->pixels, (Dimensions){ surface->w, surface->h });
else
CopyFramebuffertoN3DS_32(framebuffer, (Dimensions){ width, height },
surface->pixels, (Dimensions){ surface->w, surface->h });
FlushN3DSBuffer(framebuffer, bufsize, drv_data->screen);
return true;
}
static void CopyFramebuffertoN3DS_16(u16 *dest, const Dimensions dest_dim, const u16 *source, const Dimensions source_dim)
{
int rows = SDL_min(dest_dim.width, source_dim.height);
int cols = SDL_min(dest_dim.height, source_dim.width);
for (int y = 0; y < rows; ++y) {
for (int x = 0; x < cols; ++x) {
const u16 *s = source + GetSourceOffset(x, y, source_dim.width);
u16 *d = dest + GetDestOffset(x, y, dest_dim.width);
*d = *s;
}
}
}
static void CopyFramebuffertoN3DS_24(u8 *dest, const Dimensions dest_dim, const u8 *source, const Dimensions source_dim)
{
int rows = SDL_min(dest_dim.width, source_dim.height);
int cols = SDL_min(dest_dim.height, source_dim.width);
for (int y = 0; y < rows; ++y) {
for (int x = 0; x < cols; ++x) {
const u8 *s = source + GetSourceOffset(x, y, source_dim.width) * 3;
u8 *d = dest + GetDestOffset(x, y, dest_dim.width) * 3;
d[0] = s[0];
d[1] = s[1];
d[2] = s[2];
}
}
}
static void CopyFramebuffertoN3DS_32(u32 *dest, const Dimensions dest_dim, const u32 *source, const Dimensions source_dim)
{
int rows = SDL_min(dest_dim.width, source_dim.height);
int cols = SDL_min(dest_dim.height, source_dim.width);
for (int y = 0; y < rows; ++y) {
for (int x = 0; x < cols; ++x) {
const u32 *s = source + GetSourceOffset(x, y, source_dim.width);
u32 *d = dest + GetDestOffset(x, y, dest_dim.width);
*d = *s;
}
}
}
static int GetDestOffset(int x, int y, int dest_width)
{
return dest_width - y - 1 + dest_width * x;
}
static int GetSourceOffset(int x, int y, int source_width)
{
return x + y * source_width;
}
static void FlushN3DSBuffer(const void *buffer, u32 bufsize, gfxScreen_t screen)
{
GSPGPU_FlushDataCache(buffer, bufsize);
gfxScreenSwapBuffers(screen, false);
}
void SDL_N3DS_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_ClearProperty(SDL_GetWindowProperties(window), N3DS_SURFACE);
}
#endif // SDL_VIDEO_DRIVER_N3DS
|
