Mercurial > sdl-ios-xcode

annotate src/video/nds/SDL_ndsrender.c @ 2677:6386764eb222 gsoc2008_nds

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Starting to work on a more complete video driver.
author Darren Alton <dalton@stevens.edu>
date Wed, 02 Jul 2008 13:59:30 +0000
parents 24a6b3588eac
children 3895761db26a
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include <stdio.h>
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24 #include <stdlib.h>
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25 #include <nds.h>
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26
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27 #include "SDL_config.h"
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28
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29 #include "SDL_video.h"
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30 #include "../SDL_sysvideo.h"
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31 #include "../SDL_yuv_sw_c.h"
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32 #include "../SDL_renderer_sw.h"
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33
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34
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35 /* SDL surface based renderer implementation */
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36
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37 static SDL_Renderer *NDS_CreateRenderer(SDL_Window * window, Uint32 flags);
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38 static int NDS_ActivateRenderer(SDL_Renderer * renderer);
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39 static int NDS_DisplayModeChanged(SDL_Renderer * renderer);
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40 static int NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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41 static int NDS_QueryTexturePixels(SDL_Renderer * renderer,
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42 SDL_Texture * texture, void **pixels,
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43 int *pitch);
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44 static int NDS_SetTexturePalette(SDL_Renderer * renderer,
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45 SDL_Texture * texture,
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46 const SDL_Color * colors, int firstcolor,
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47 int ncolors);
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48 static int NDS_GetTexturePalette(SDL_Renderer * renderer,
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49 SDL_Texture * texture, SDL_Color * colors,
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50 int firstcolor, int ncolors);
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51 static int NDS_SetTextureColorMod(SDL_Renderer * renderer,
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52 SDL_Texture * texture);
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53 static int NDS_SetTextureAlphaMod(SDL_Renderer * renderer,
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54 SDL_Texture * texture);
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55 static int NDS_SetTextureBlendMode(SDL_Renderer * renderer,
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56 SDL_Texture * texture);
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57 static int NDS_SetTextureScaleMode(SDL_Renderer * renderer,
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58 SDL_Texture * texture);
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59 static int NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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60 const SDL_Rect * rect, const void *pixels,
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61 int pitch);
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62 static int NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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63 const SDL_Rect * rect, int markDirty, void **pixels,
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64 int *pitch);
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65 static void NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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66 static void NDS_DirtyTexture(SDL_Renderer * renderer,
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67 SDL_Texture * texture, int numrects,
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68 const SDL_Rect * rects);
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69 static int NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g,
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70 Uint8 b, Uint8 a, const SDL_Rect * rect);
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71 static int NDS_RenderCopy(SDL_Renderer * renderer,
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72 SDL_Texture * texture,
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73 const SDL_Rect * srcrect,
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74 const SDL_Rect * dstrect);
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75 static void NDS_RenderPresent(SDL_Renderer * renderer);
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76 static void NDS_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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77 static void NDS_DestroyRenderer(SDL_Renderer * renderer);
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78
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79
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80 SDL_RenderDriver NDS_RenderDriver = {
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81 NDS_CreateRenderer,
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82 {"nds", SDL_RENDERER_PRESENTCOPY}
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83 /* (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
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84 SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
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85 SDL_RENDERER_PRESENTDISCARD),*/
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86 };
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87
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88 typedef struct
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89 {
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90 int current_screen;
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91 u16* fb;
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92 } NDS_RenderData;
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93
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94
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95
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96 /* this is mainly hackish testing/debugging stuff to get cleaned up soon
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97 anything named sdlds_blah shouldn't make it into the stable version
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98 */
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99
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100 u16
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101 sdlds_rgb2bgr(u16 c)
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102 {
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103 /* hack to get the proper colors until I actually get BGR555 to work right */
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104 u16 Rmask = 0x7C00, Bmask = 0x001F, GAmask = 0x83E0, r, b;
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105 r = (c & Rmask) >> 10;
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106 b = (c & Bmask) << 10;
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107 return (c & GAmask) | r | b;
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108 }
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109
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110 void
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111 sdlds_surf2vram(SDL_Surface * s)
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112 {
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113 if (s->w == 256) {
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114 u16 tmpbuf[0x20000];
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115 int i;
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116
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117 dmaCopy((u8 *) (s->pixels) + 156 * sizeof(u16),
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118 tmpbuf, 256 * 192 * sizeof(u16));
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119 /* hack to fix the pixel format until I figure out why BGR doesn't work */
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120 for (i = 0; i < 256 * 192; ++i) {
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121 tmpbuf[i] = sdlds_rgb2bgr(tmpbuf[i]);
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122 }
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123 dmaCopy(tmpbuf, VRAM_A, 256 * 192 * sizeof(u16));
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124 }
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125 }
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126
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127 void
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128 sdlds_print_pixfmt_info(SDL_PixelFormat * f)
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129 {
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130 if (!f)
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131 return;
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132 printf("bpp: %d\nRGBA: %x %x %x %x\n",
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133 f->BitsPerPixel, f->Rmask, f->Gmask, f->Bmask, f->Amask);
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134 }
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135
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136 void
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137 sdlds_print_surface_info(SDL_Surface * s)
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138 {
24a6b3588eac Cleaned up and added joypad support from 1.2.9 NDS port. Also some minor video driver bugfixes.
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139 if (!s)
24a6b3588eac Cleaned up and added joypad support from 1.2.9 NDS port. Also some minor video driver bugfixes.
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140 return;
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141 printf("flags: %x\nsize: %dx%d, pitch: %d\nlocked: %d, refcount: %d\n",
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142 s->flags, s->w, s->h, s->pitch, s->locked, s->refcount);
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143 sdlds_print_pixfmt_info(s->format);
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144 }
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145
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146
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147
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148 SDL_Renderer *
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149 NDS_CreateRenderer(SDL_Window * window, Uint32 flags)
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150 {
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151 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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152 SDL_DisplayMode *displayMode = &display->current_mode;
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153 SDL_Renderer *renderer;
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154 NDS_RenderData *data;
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155 int i, n;
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156 int bpp = 15;
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157 Uint32 Rmask, Gmask, Bmask, Amask;
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158 /* Uint32 Rmask = 0x7C00, Gmask = 0x03E0, Bmask = 0x001F, Amask = 0x8000;
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159 Uint32 Rmask = 0x001F, Gmask = 0x03E0, Bmask = 0x7C00, Amask = 0x8000;
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160 */
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161
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162 /* hard coded this to BGR555 for now */
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163 if (!SDL_PixelFormatEnumToMasks(SDL_PIXELFORMAT_BGR555, &bpp,
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164 &Rmask, &Gmask, &Bmask, &Amask)) {
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165 SDL_SetError("Unknown display format");
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166 return NULL;
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167 }
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168
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169 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
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170 if (!renderer) {
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171 SDL_OutOfMemory();
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172 return NULL;
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173 }
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174
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175 data = (NDS_RenderData *) SDL_malloc(sizeof(*data));
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176 if (!data) {
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177 NDS_DestroyRenderer(renderer);
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178 SDL_OutOfMemory();
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179 return NULL;
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180 }
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181 SDL_zerop(data);
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182
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183 renderer->RenderFill = NDS_RenderFill;
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184 renderer->RenderCopy = NDS_RenderCopy;
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185 renderer->RenderPresent = NDS_RenderPresent;
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186 renderer->DestroyRenderer = NDS_DestroyRenderer;
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187 renderer->info.name = NDS_RenderDriver.info.name;
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188 renderer->info.flags = 0;
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189 renderer->window = window->id;
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190 renderer->driverdata = data;
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191 Setup_SoftwareRenderer(renderer); /* TODO: well, "TODON'T" is more like it */
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192
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193 if (flags & SDL_RENDERER_PRESENTFLIP2) {
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194 renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
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195 n = 2;
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196 } else if (flags & SDL_RENDERER_PRESENTFLIP3) {
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197 renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
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198 n = 3;
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199 } else {
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200 renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
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201 n = 1;
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202 }/*
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203 for (i = 0; i < n; ++i) {
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204 data->screens[i] =
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205 SDL_CreateRGBSurface(0, 256, 192, bpp, Rmask, Gmask, Bmask,
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206 Amask);
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207 if (!data->screens[i]) {
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208 NDS_DestroyRenderer(renderer);
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209 return NULL;
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210 }
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211 SDL_SetSurfacePalette(data->screens[i], display->palette);
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212 sdlds_print_surface_info(data->screens[i]);
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213 }*/
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214
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215 data->fb = (u16*)0x06020000;
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216
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217 return renderer;
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218 }
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219
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220 static int
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221 NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b,
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222 Uint8 a, const SDL_Rect * rect)
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223 {
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224 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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225 SDL_Rect real_rect = *rect;
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226 u16 color;
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diff changeset
227 int i, j;
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228
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229 color = RGB15(r>>3,g>>3,b>>3);
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230 for (i = real_rect.x; i < real_rect.x+real_rect.w; ++i) {
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diff changeset
231 for (j = real_rect.y; j < real_rect.y+real_rect.h; ++j) {
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232 data->fb[(j + real_rect.y) * 256 + i + real_rect.x] =
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233 0x8000 | color;
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234 }
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235 }
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236 return 0;
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237 }
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238 static int
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239 NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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240 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
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241 {
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242 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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243 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
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diff changeset
244 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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245
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246 #if 0
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247 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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248 SDL_Surface *target = data->screens[data->current_screen];
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diff changeset
249 void *pixels =
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diff changeset
250 (Uint8 *) target->pixels + dstrect->y * target->pitch +
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diff changeset
251 dstrect->x * target->format->BytesPerPixel;
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diff changeset
252 return SDL_SW_CopyYUVToRGB((SDL_SW_YUVTexture *) texture->driverdata,
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253 srcrect, display->current_mode.format,
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254 dstrect->w, dstrect->h, pixels,
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255 target->pitch);
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256 } else {
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257 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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258 SDL_Surface *target = data->screens[data->current_screen];
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259 SDL_Rect real_srcrect = *srcrect;
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260 SDL_Rect real_dstrect = *dstrect;
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261 /*sdlds_print_surface_info(surface);
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262 sdlds_print_surface_info(target); */
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263 sdlds_surf2vram(surface);
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264 return SDL_LowerBlit(surface, &real_srcrect, target, &real_dstrect);
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265 }
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266 #endif
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267 /* copy it directly to vram */
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268 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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269 sdlds_surf2vram(surface);
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270 /*
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271 int sx = srcrect->x, sy = srcrect->y, sw = srcrect->w, sh = srcrect->h;
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272 int dx = dstrect->x, dy = dstrect->y, dw = dstrect->w, dh = dstrect->h;
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273 int si, sj, di, dj;
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274 for (sj = 0, dj = 0; sj < sh && dj < dh; ++sj, ++dj) {
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275 for (si = 0, di = 0; si < sw && di < dw; ++si, ++di) {
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276 data->fb[(dj + dy) * 256 + di + dx] = 0x8000 |
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277 ((u16 *) surface->pixels)[(sj + sy) * (surface->w) + si +
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278 sx];
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279 }
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280 }*/
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281 return 0;
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282 }
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283
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284
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285 static void
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286 NDS_RenderPresent(SDL_Renderer * renderer)
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287 {
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288 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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289 /* Send the data to the display TODO */
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290
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291 /* Update the flipping chain, if any */
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292 if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
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293 data->current_screen = (data->current_screen + 1) % 2;
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294 } else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
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295 data->current_screen = (data->current_screen + 1) % 3;
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296 }
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297 }
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298
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299 static void
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300 NDS_DestroyRenderer(SDL_Renderer * renderer)
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301 {
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302 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata;
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303 int i;
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304
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305 printf("NDS_DestroyRenderer(renderer)\n");
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306 printf(" renderer: %s\n", renderer->info.name);
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307 if (data) {
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308 /*for (i = 0; i < SDL_arraysize(data->screens); ++i) {
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309 if (data->screens[i]) {
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310 SDL_FreeSurface(data->screens[i]);
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311 }
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312 }*/
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313 SDL_free(data);
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314 }
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315 SDL_free(renderer);
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316 }
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317
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318 /* vi: set ts=4 sw=4 expandtab: */