1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../../SDL_internal.h"
22
23 #if SDL_VIDEO_DRIVER_VITA
24
25 #include "SDL_vitavideo.h"
26
27 #include <psp2/kernel/sysmem.h>
28
29 #define SCREEN_W 960
30 #define SCREEN_H 544
31 #define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
32 #define DISPLAY_PIXEL_FORMAT SCE_DISPLAY_PIXELFORMAT_A8B8G8R8
33
vita_gpu_alloc(SceKernelMemBlockType type,unsigned int size,SceUID * uid)34 void *vita_gpu_alloc(SceKernelMemBlockType type, unsigned int size, SceUID *uid)
35 {
36 void *mem;
37
38 if (type == SCE_KERNEL_MEMBLOCK_TYPE_USER_CDRAM_RW) {
39 size = ALIGN(size, 256*1024);
40 } else {
41 size = ALIGN(size, 4*1024);
42 }
43
44 *uid = sceKernelAllocMemBlock("gpu_mem", type, size, NULL);
45
46 if (*uid < 0)
47 return NULL;
48
49 if (sceKernelGetMemBlockBase(*uid, &mem) < 0)
50 return NULL;
51
52 return mem;
53 }
54
vita_gpu_free(SceUID uid)55 void vita_gpu_free(SceUID uid)
56 {
57 void *mem = NULL;
58 if (sceKernelGetMemBlockBase(uid, &mem) < 0)
59 return;
60 sceKernelFreeMemBlock(uid);
61 }
62
VITA_CreateWindowFramebuffer(_THIS,SDL_Window * window,Uint32 * format,void ** pixels,int * pitch)63 int VITA_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
64 {
65 SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
66 SceDisplayFrameBuf framebuf;
67
68 *format = SDL_PIXELFORMAT_ABGR8888;
69 *pitch = SCREEN_W * 4;
70
71 data->buffer = vita_gpu_alloc(
72 SCE_KERNEL_MEMBLOCK_TYPE_USER_CDRAM_RW,
73 4 * SCREEN_W * SCREEN_H,
74 &data->buffer_uid
75 );
76
77 // SDL_memset the buffer to black
78 SDL_memset(data->buffer, 0x0, SCREEN_W*SCREEN_H*4);
79
80 SDL_memset(&framebuf, 0x00, sizeof(SceDisplayFrameBuf));
81 framebuf.size = sizeof(SceDisplayFrameBuf);
82 framebuf.base = data->buffer;
83 framebuf.pitch = SCREEN_W;
84 framebuf.pixelformat = DISPLAY_PIXEL_FORMAT;
85 framebuf.width = SCREEN_W;
86 framebuf.height = SCREEN_H;
87 sceDisplaySetFrameBuf(&framebuf, SCE_DISPLAY_SETBUF_NEXTFRAME);
88
89 *pixels = data->buffer;
90
91 return 0;
92 }
93
VITA_UpdateWindowFramebuffer(_THIS,SDL_Window * window,const SDL_Rect * rects,int numrects)94 int VITA_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
95 {
96 // do nothing
97 return 0;
98 }
99
VITA_DestroyWindowFramebuffer(_THIS,SDL_Window * window)100 void VITA_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
101 {
102 SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
103
104 if (!data) {
105 /* The window wasn't fully initialized */
106 return;
107 }
108
109 vita_gpu_free(data->buffer_uid);
110 data->buffer = NULL;
111 return;
112 }
113
114 #endif /* SDL_VIDEO_DRIVER_VITA */
115
116 /* vi: set ts=4 sw=4 expandtab: */
117