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Native framebuffer for software renderer

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Ivan Epifanov 2020-12-28 15:32:52 +03:00 committed by Sam Lantinga
parent ff5f98b87b
commit 1e2eed1a01
4 changed files with 158 additions and 0 deletions
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121
src/video/vita/SDL_vitaframebuffer.c Normal file
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@ -0,0 +1,121 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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"
#if SDL_VIDEO_DRIVER_VITA
#include "SDL_vitavideo.h"
#include <psp2/kernel/sysmem.h>
#define SCREEN_W 960
#define SCREEN_H 544
#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
#define DISPLAY_PIXEL_FORMAT SCE_DISPLAY_PIXELFORMAT_A8B8G8R8
void *vita_gpu_alloc(SceKernelMemBlockType type, unsigned int size, SceUID *uid)
{
void *mem;
if (type == SCE_KERNEL_MEMBLOCK_TYPE_USER_CDRAM_RW) {
size = ALIGN(size, 256*1024);
} else {
size = ALIGN(size, 4*1024);
}
*uid = sceKernelAllocMemBlock("gpu_mem", type, size, NULL);
if (*uid < 0)
return NULL;
if (sceKernelGetMemBlockBase(*uid, &mem) < 0)
return NULL;
return mem;
}
void vita_gpu_free(SceUID uid)
{
void *mem = NULL;
if (sceKernelGetMemBlockBase(uid, &mem) < 0)
return;
sceKernelFreeMemBlock(uid);
}
int VITA_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
SceDisplayFrameBuf framebuf;
*format = SDL_PIXELFORMAT_ABGR8888;
*pitch = SCREEN_W * 4;
data->buffer = vita_gpu_alloc(
SCE_KERNEL_MEMBLOCK_TYPE_USER_CDRAM_RW,
4 * SCREEN_W * SCREEN_H,
&data->buffer_uid
);
// memset the buffer to black
for (int y = 0; y < SCREEN_H; y++) {
unsigned int *row = (unsigned int *)data->buffer + y * SCREEN_W;
for (int x = 0; x < SCREEN_W; x++) {
row[x] = 0xff0000FF;
}
}
SDL_memset(&framebuf, 0x00, sizeof(SceDisplayFrameBuf));
framebuf.size = sizeof(SceDisplayFrameBuf);
framebuf.base = data->buffer;
framebuf.pitch = SCREEN_W;
framebuf.pixelformat = DISPLAY_PIXEL_FORMAT;
framebuf.width = SCREEN_W;
framebuf.height = SCREEN_H;
sceDisplaySetFrameBuf(&framebuf, SCE_DISPLAY_SETBUF_NEXTFRAME);
*pixels = data->buffer;
return 0;
}
int VITA_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
{
// do nothing
return 0;
}
void VITA_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
if (!data) {
/* The window wasn't fully initialized */
return;
}
vita_gpu_free(data->buffer_uid);
data->buffer = NULL;
return;
}
#endif /* SDL_VIDEO_DRIVER_VITA */
/* vi: set ts=4 sw=4 expandtab: */

27
src/video/vita/SDL_vitaframebuffer.h Normal file
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@ -0,0 +1,27 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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"
extern int VITA_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch);
extern int VITA_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects);
extern void VITA_DestroyWindowFramebuffer(_THIS, SDL_Window * window);
/* vi: set ts=4 sw=4 expandtab: */

5
src/video/vita/SDL_vitavideo.c
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@ -37,6 +37,7 @@
#include "SDL_vitatouch.h"
#include "SDL_vitakeyboard.h"
#include "SDL_vitamouse_c.h"
#include "SDL_vitaframebuffer.h"
#if SDLVIDEO_OPENGL_ES2
#include "SDL_vitagl_c.h"
#endif
@ -121,6 +122,10 @@ VITA_Create()
device->DestroyWindow = VITA_DestroyWindow;
device->GetWindowWMInfo = VITA_GetWindowWMInfo;
device->CreateWindowFramebuffer = VITA_CreateWindowFramebuffer;
device->UpdateWindowFramebuffer = VITA_UpdateWindowFramebuffer;
device->DestroyWindowFramebuffer = VITA_DestroyWindowFramebuffer;
#if SDL_VIDEO_OPENGL_ES2
device->GL_LoadLibrary = VITA_GL_LoadLibrary;
device->GL_GetProcAddress = VITA_GL_GetProcAddress;

5
src/video/vita/SDL_vitavideo.h
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@ -25,6 +25,8 @@
#include "../../SDL_internal.h"
#include "../SDL_sysvideo.h"
#include <psp2/types.h>
#include <psp2/display.h>
#include <psp2/ime_dialog.h>
typedef struct SDL_VideoData
@ -34,6 +36,7 @@ typedef struct SDL_VideoData
wchar_t ime_buffer[SCE_IME_DIALOG_MAX_TEXT_LENGTH];
SDL_bool ime_active;
} SDL_VideoData;
@ -46,6 +49,8 @@ typedef struct SDL_DisplayData
typedef struct SDL_WindowData
{
SDL_bool uses_gles;
SceUID buffer_uid;
void* buffer;
} SDL_WindowData;