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SDL_ndsrender.c
595 lines (537 loc) · 19.9 KB
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include <stdio.h>
#include <stdlib.h>
#include <nds.h>
#include "SDL_config.h"
#include "SDL_video.h"
#include "../SDL_sysvideo.h"
#include "../SDL_yuv_sw_c.h"
#include "../SDL_renderer_sw.h"
/* SDL surface based renderer implementation */
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static SDL_Renderer *NDS_CreateRenderer(SDL_Window * window, Uint32 flags);
static int NDS_ActivateRenderer(SDL_Renderer * renderer);
static int NDS_DisplayModeChanged(SDL_Renderer * renderer);
static int NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static int NDS_QueryTexturePixels(SDL_Renderer * renderer,
SDL_Texture * texture, void **pixels,
int *pitch);
static int NDS_SetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture,
const SDL_Color * colors, int firstcolor,
int ncolors);
static int NDS_GetTexturePalette(SDL_Renderer * renderer,
SDL_Texture * texture, SDL_Color * colors,
int firstcolor, int ncolors);
static int NDS_SetTextureColorMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_SetTextureAlphaMod(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_SetTextureBlendMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_SetTextureScaleMode(SDL_Renderer * renderer,
SDL_Texture * texture);
static int NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels,
int pitch);
static int NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch);
static void NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void NDS_DirtyTexture(SDL_Renderer * renderer,
SDL_Texture * texture, int numrects,
const SDL_Rect * rects);
static int NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g,
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Uint8 b, Uint8 a, const SDL_Rect * rect);
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static int NDS_RenderCopy(SDL_Renderer * renderer,
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SDL_Texture * texture,
const SDL_Rect * srcrect,
const SDL_Rect * dstrect);
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static void NDS_RenderPresent(SDL_Renderer * renderer);
static void NDS_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
static void NDS_DestroyRenderer(SDL_Renderer * renderer);
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SDL_RenderDriver NDS_RenderDriver = {
NDS_CreateRenderer,
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{ "nds", /* char* name */
(SDL_RENDERER_SINGLEBUFFER|SDL_RENDERER_ACCELERATED), /* u32 flags */
(SDL_TEXTUREMODULATE_NONE), /* u32 mod_modes */
(SDL_TEXTUREBLENDMODE_NONE), /* u32 blend_modes */
(SDL_TEXTURESCALEMODE_NONE), /* u32 scale_modes */
3, /* u32 num_texture_formats */
{
SDL_PIXELFORMAT_INDEX8,
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SDL_PIXELFORMAT_ABGR1555,
SDL_PIXELFORMAT_BGR555,
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}, /* u32 texture_formats[20] */
(256), /* int max_texture_width */
(256), /* int max_texture_height */
}
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};
typedef struct
{
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bg_attribute *bg;
u8 bg_taken[4];
int sub;
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} NDS_RenderData;
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typedef struct
{
enum { NDSTX_BG, NDSTX_SPR } type;
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int hw_index;
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struct { int w, h, pitch, bpp; } dim;
u16 *vram;
} NDS_TextureData;
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/* this is mainly hackish testing/debugging stuff to get cleaned up soon
anything named sdlds_blah shouldn't make it into the stable version
*/
u16
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sdlds_rgb2bgr(u16 c)
{
/* hack to get the proper colors until I actually get BGR555 to work right */
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u16 Rmask = 0x7C00, Bmask = 0x001F, GAmask = 0x83E0, r, b;
r = (c & Rmask) >> 10;
b = (c & Bmask) << 10;
return (c & GAmask) | r | b;
}
void
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sdlds_print_pixfmt_info(SDL_PixelFormat * f)
{
if (!f)
return;
printf("bpp: %d\nRGBA: %x %x %x %x\n",
f->BitsPerPixel, f->Rmask, f->Gmask, f->Bmask, f->Amask);
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}
void
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sdlds_print_surface_info(SDL_Surface * s)
{
if (!s)
return;
printf("flags: %x\nsize: %dx%d, pitch: %d\nlocked: %d, refcount: %d\n",
s->flags, s->w, s->h, s->pitch, s->locked, s->refcount);
sdlds_print_pixfmt_info(s->format);
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}
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/* again the above shouldn't make it into the stable version */
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SDL_Renderer *
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NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
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{
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
SDL_DisplayMode *displayMode = &display->current_mode;
SDL_Renderer *renderer;
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NDS_RenderData *data;
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int i, n;
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int bpp = 15;
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Uint32 Rmask, Gmask, Bmask, Amask;
/* Uint32 Rmask = 0x7C00, Gmask = 0x03E0, Bmask = 0x001F, Amask = 0x8000;
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Uint32 Rmask = 0x001F, Gmask = 0x03E0, Bmask = 0x7C00, Amask = 0x8000;
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*/
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printf("+NDS_CreateRenderer\n");
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/* hard coded this to BGR555 for now */
if (!SDL_PixelFormatEnumToMasks(SDL_PIXELFORMAT_BGR555, &bpp,
&Rmask, &Gmask, &Bmask, &Amask)) {
SDL_SetError("Unknown display format");
return NULL;
}
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renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
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data = (NDS_RenderData *) SDL_malloc(sizeof(*data));
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if (!data) {
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NDS_DestroyRenderer(renderer);
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SDL_OutOfMemory();
return NULL;
}
SDL_zerop(data);
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renderer->RenderFill = NDS_RenderFill;
renderer->RenderCopy = NDS_RenderCopy;
renderer->RenderPresent = NDS_RenderPresent;
renderer->DestroyRenderer = NDS_DestroyRenderer;
renderer->info.name = NDS_RenderDriver.info.name;
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renderer->info.flags = 0;
renderer->window = window->id;
renderer->driverdata = data;
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renderer->CreateTexture = NDS_CreateTexture;
renderer->QueryTexturePixels = NDS_QueryTexturePixels;
renderer->SetTexturePalette = NDS_SetTexturePalette;
renderer->GetTexturePalette = NDS_GetTexturePalette;
renderer->SetTextureColorMod = NDS_SetTextureColorMod;
renderer->SetTextureAlphaMod = NDS_SetTextureAlphaMod;
renderer->SetTextureBlendMode = NDS_SetTextureBlendMode;
renderer->SetTextureScaleMode = NDS_SetTextureScaleMode;
renderer->UpdateTexture = NDS_UpdateTexture;
renderer->LockTexture = NDS_LockTexture;
renderer->UnlockTexture = NDS_UnlockTexture;
renderer->DirtyTexture = NDS_DirtyTexture;
renderer->DestroyTexture = NDS_DestroyTexture;
renderer->info.mod_modes = NDS_RenderDriver.info.mod_modes;
renderer->info.blend_modes = NDS_RenderDriver.info.blend_modes;
renderer->info.scale_modes = NDS_RenderDriver.info.scale_modes;
renderer->info.num_texture_formats =
NDS_RenderDriver.info.num_texture_formats;
SDL_memcpy(renderer->info.texture_formats,
NDS_RenderDriver.info.texture_formats,
sizeof(renderer->info.texture_formats));;
renderer->info.max_texture_width = NDS_RenderDriver.info.max_texture_width;
renderer->info.max_texture_height =
NDS_RenderDriver.info.max_texture_height;
/*data->fb = (u16*)0x06020000;*/
data->bg = &BACKGROUND;
data->bg_taken[2] = data->bg_taken[3] = 0;
data->sub = 0;
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printf("-NDS_CreateRenderer\n");
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return renderer;
}
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static int
NDS_ActivateRenderer(SDL_Renderer * renderer)
{
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
/* stub. TODO: figure out what needs to be done, if anything. */
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printf("!NDS_ActivateRenderer\n");
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return 0;
}
static int
NDS_DisplayModeChanged(SDL_Renderer * renderer)
{
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
/* stub. TODO: figure out what needs to be done */
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printf("!NDS_DisplayModeChanged\n");
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return 0;
}
static int
NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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NDS_TextureData *txdat = NULL;
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int i;
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printf("+NDS_CreateTexture\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
return -1;
} else {
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
if (!SDL_PixelFormatEnumToMasks
(texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
SDL_SetError("Unknown texture format");
return -1;
}
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/* conditional statements on w/h to place it as bg/sprite */
/*if(texture->w <= 64 && texture->h <= 64) {
sprites not implemented yet. elegant, I know.
} else*/ if(texture->w <= 256 && texture->h <= 256) {
int whichbg = -1;
if(!data->bg_taken[2]) {
whichbg = 2;
data->bg->bg2_rotation.xdx = 0x100;
data->bg->bg2_rotation.xdy = 0;
data->bg->bg2_rotation.ydx = 0;
data->bg->bg2_rotation.ydy = 0x100;
data->bg->bg2_rotation.centerX = 0;
data->bg->bg2_rotation.centerY = 0;
} else if(!data->bg_taken[3]) {
whichbg = 3;
data->bg->bg3_rotation.xdx = 0x100;
data->bg->bg3_rotation.xdy = 0;
data->bg->bg3_rotation.ydx = 0;
data->bg->bg3_rotation.ydy = 0x100;
data->bg->bg3_rotation.centerX = 0;
data->bg->bg3_rotation.centerY = 0;
}
if(whichbg >= 0) {
data->bg->control[whichbg] = (bpp == 8) ?
BG_BMP8_256x256 : BG_BMP16_256x256;
data->bg->scroll[whichbg].x = 0;
data->bg->scroll[whichbg].y = 0;
texture->driverdata = SDL_calloc(1, sizeof(NDS_TextureData));
txdat = (NDS_TextureData*)texture->driverdata;
txdat->type = NDSTX_BG;
txdat->hw_index = whichbg;
txdat->dim.w = texture->w;
txdat->dim.h = texture->h;
txdat->dim.pitch = 256 * (bpp/8);
txdat->dim.bpp = bpp;
txdat->vram = (u16*)(data->sub ?
BG_BMP_RAM_SUB(whichbg) : BG_BMP_RAM(whichbg));
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for(i = 0; i < 256*256; ++i) {
txdat->vram[i] = 0x8000|RGB15(0,31,31);
}
for(i = 0; i < 60; ++i) swiWaitForVBlank();
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} else {
SDL_SetError("Out of NDS backgrounds.");
}
} else {
SDL_SetError("Texture too big for NDS hardware.");
}
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}
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printf("-NDS_CreateTexture\n");
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if (!texture->driverdata) {
return -1;
}
return 0;
}
static int
NDS_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
void **pixels, int *pitch)
{
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printf("+NDS_QueryTexturePixels\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
return -1;
} else {
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
*pixels = txdat->vram;
*pitch = txdat->dim.pitch;
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printf("-NDS_QueryTexturePixels\n");
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return 0;
}
}
static int
NDS_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Color * colors, int firstcolor, int ncolors)
{
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printf("+NDS_SetTexturePalette\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("YUV textures don't have a palette");
return -1;
} else {
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
/* TODO: mess with 8-bit modes and/or 16-color palette modes */
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printf("-NDS_SetTexturePalette\n");
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return 0;
}
}
static int
NDS_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
SDL_Color * colors, int firstcolor, int ncolors)
{
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printf("+NDS_GetTexturePalette\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("YUV textures don't have a palette");
return -1;
} else {
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
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printf("-NDS_GetTexturePalette\n");
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/* TODO: mess with 8-bit modes and/or 16-color palette modes */
return 0;
}
}
static int
NDS_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
{
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printf("!NDS_SetTextureColorMod\n");
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/* stub. TODO: figure out what needs to be done, if anything */
return 0;
}
static int
NDS_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
{
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printf("!NDS_SetTextureAlphaMod\n");
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/* stub. TODO: figure out what needs to be done, if anything */
return 0;
}
static int
NDS_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
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printf("!NDS_SetTextureBlendMode\n");
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/* stub. TODO: figure out what needs to be done, if anything */
return 0;
}
static int
NDS_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture)
{
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printf("!NDS_SetTextureScaleMode\n");
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/* stub. TODO: figure out what needs to be done.
(NDS hardware scaling is nearest neighbor.) */
return 0;
}
static int
NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
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printf("+NDS_UpdateTexture\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
return -1;
} else {
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
Uint8 *src, *dst;
int row;
size_t length;
/* IMPORTANT! copy the new pixels into the sprite or bg. */
src = (Uint8 *) pixels;
dst =
(Uint8 *) txdat->vram + rect->y * txdat->dim.pitch +
rect->x * (txdat->dim.bpp/8);
length = rect->w * (txdat->dim.bpp/8);
for (row = 0; row < rect->h; ++row) {
SDL_memcpy(dst, src, length);
src += pitch;
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dst += txdat->dim.pitch;
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}
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printf("-NDS_UpdateTexture\n");
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return 0;
}
}
static int
NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, int markDirty, void **pixels,
int *pitch)
{
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printf("+NDS_LockTexture\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
return -1;
} else {
NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
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if (markDirty) {
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/*SDL_AddDirtyRect(&txdat->dirty, rect);*/
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}
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*pixels = (void *) ((u8 *)txdat->vram + rect->y * txdat->dim.pitch
+ rect->x * (txdat->dim.bpp/8));
*pitch = txdat->dim.pitch;
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printf("-NDS_LockTexture\n");
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return 0;
}
}
static void
NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
}
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printf("+NDS_UnlockTexture\n-NDS_UnlockTexture\n");
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}
static void
NDS_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
int numrects, const SDL_Rect * rects)
{ /* stub */
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printf("!NDS_DirtyTexture\n");
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}
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static int
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NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
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Uint8 a, const SDL_Rect * rect)
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{
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NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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SDL_Rect real_rect = *rect;
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u16 color;
int i, j;
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printf("+NDS_RenderFill\n");
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/* TODO: make a single-color sprite and stretch it.
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color = RGB15(r>>3,g>>3,b>>3);
for (i = real_rect.x; i < real_rect.x+real_rect.w; ++i) {
for (j = real_rect.y; j < real_rect.y+real_rect.h; ++j) {
data->fb[(j + real_rect.y) * 256 + i + real_rect.x] =
0x8000 | color;
}
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}*/
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printf("-NDS_RenderFill\n");
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return 0;
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}
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static int
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NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * srcrect, const SDL_Rect * dstrect)
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{
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NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata;
// SDL_Window *window = SDL_GetWindowFromID(renderer->window);
// SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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int i;
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printf("+NDS_RenderCopy\n");
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/*for(i = 0; i <= 0xFFFF; ++i) {
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txdat->vram[i] = 0x8000|i;
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}*/
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printf("/txdat->hw_index = %d\n", txdat->hw_index);
#if 0
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if (txdat->dirty.list) {
SDL_DirtyRect *dirty;
void *pixels;
int bpp = SDL_BYTESPERPIXEL(texture->format);
int pitch = txdat->pitch;
/* below was borrowed from SDL_renderer_gl.c. doesn't work, obv.
figure out how to get the graphics data into VRAM. */
for (dirty = txdat->dirty.list; dirty; dirty = dirty->next) {
SDL_Rect *rect = &dirty->rect;
/*pixels =
(void *) ((Uint8 *) txdat->vram + rect->y * pitch +
rect->x * bpp);
data->glTexSubImage2D(texturedata->type, 0, rect->x, rect->y,
rect->w, rect->h, texturedata->format,
texturedata->formattype, pixels);*/
}
SDL_ClearDirtyRects(&txdat->dirty);
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}
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#endif
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printf("-NDS_RenderCopy\n");
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return 0;
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}
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static void
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NDS_RenderPresent(SDL_Renderer * renderer)
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{
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NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
/* Send the data to the display TODO */
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printf("+NDS_RenderPresent\n");
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/* Update the flipping chain, if any */
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if (renderer->info.flags & SDL_RENDERER_PRESENTVSYNC) {
swiWaitForVBlank();
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}
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printf("-NDS_RenderPresent\n");
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}
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static void
NDS_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
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printf("+NDS_DestroyTexture\n");
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if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
SDL_SetError("Unsupported texture format");
} else {
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/* free anything else allocated for texture */
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NDS_TextureData *txdat = texture->driverdata;
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/*SDL_FreeDirtyRects(&txdat->dirty);*/
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SDL_free(txdat);
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}
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printf("-NDS_DestroyTexture\n");
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}
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static void
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NDS_DestroyRenderer(SDL_Renderer * renderer)
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{
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NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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/*SDL_Window *window = SDL_GetWindowFromID(renderer->window);
SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);*/
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int i;
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printf("+NDS_DestroyRenderer\n");
573
if (data) {
574
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/* TODO: free anything relevant. */
/*for (i = 0; i < SDL_arraysize(data->texture); ++i) {
576
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if (data->texture[i]) {
DestroyTexture(data->renderer, data->texture[i]);
578
}
579
580
581
582
583
584
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}
if (data->surface.format) {
SDL_SetSurfacePalette(&data->surface, NULL);
SDL_FreeFormat(data->surface.format);
}
if (display->palette) {
SDL_DelPaletteWatch(display->palette, DisplayPaletteChanged,
data);
}
588
SDL_FreeDirtyRects(&data->dirty);*/
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SDL_free(data);
}
SDL_free(renderer);
592
printf("-NDS_DestroyRenderer\n");
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}
/* vi: set ts=4 sw=4 expandtab: */