Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5098 | clevermous | 1 | /* |
| 2 | * Texture Manager |
||
| 3 | */ |
||
| 4 | |||
| 5 | #include "zgl.h" |
||
| 6 | |||
| 7 | static GLTexture *find_texture(GLContext *c,int h) |
||
| 8 | { |
||
| 9 | GLTexture *t; |
||
| 10 | |||
| 11 | t=c->shared_state.texture_hash_table[h % TEXTURE_HASH_TABLE_SIZE]; |
||
| 12 | while (t!=NULL) { |
||
| 13 | if (t->handle == h) return t; |
||
| 14 | t=t->next; |
||
| 15 | } |
||
| 16 | return NULL; |
||
| 17 | } |
||
| 18 | |||
| 19 | static void free_texture(GLContext *c,int h) |
||
| 20 | { |
||
| 21 | GLTexture *t,**ht; |
||
| 22 | GLImage *im; |
||
| 23 | int i; |
||
| 24 | |||
| 25 | t=find_texture(c,h); |
||
| 26 | if (t->prev==NULL) { |
||
| 27 | ht=&c->shared_state.texture_hash_table |
||
| 28 | [t->handle % TEXTURE_HASH_TABLE_SIZE]; |
||
| 29 | *ht=t->next; |
||
| 30 | } else { |
||
| 31 | t->prev->next=t->next; |
||
| 32 | } |
||
| 33 | if (t->next!=NULL) t->next->prev=t->prev; |
||
| 34 | |||
| 35 | for(i=0;i |
||
| 36 | im=&t->images[i]; |
||
| 37 | if (im->pixmap != NULL) gl_free(im->pixmap); |
||
| 38 | } |
||
| 39 | |||
| 40 | gl_free(t); |
||
| 41 | } |
||
| 42 | |||
| 43 | GLTexture *alloc_texture(GLContext *c,int h) |
||
| 44 | { |
||
| 45 | GLTexture *t,**ht; |
||
| 46 | |||
| 47 | t=gl_zalloc(sizeof(GLTexture)); |
||
| 48 | |||
| 49 | ht=&c->shared_state.texture_hash_table[h % TEXTURE_HASH_TABLE_SIZE]; |
||
| 50 | |||
| 51 | t->next=*ht; |
||
| 52 | t->prev=NULL; |
||
| 53 | if (t->next != NULL) t->next->prev=t; |
||
| 54 | *ht=t; |
||
| 55 | |||
| 56 | t->handle=h; |
||
| 57 | |||
| 58 | return t; |
||
| 59 | } |
||
| 60 | |||
| 61 | |||
| 62 | void glInitTextures(GLContext *c) |
||
| 63 | { |
||
| 64 | /* textures */ |
||
| 65 | |||
| 66 | c->texture_2d_enabled=0; |
||
| 67 | c->current_texture=find_texture(c,0); |
||
| 68 | } |
||
| 69 | |||
| 70 | void glGenTextures(int n, unsigned int *textures) |
||
| 71 | { |
||
| 72 | GLContext *c=gl_get_context(); |
||
| 73 | int max,i; |
||
| 74 | GLTexture *t; |
||
| 75 | |||
| 76 | max=0; |
||
| 77 | for(i=0;i |
||
| 78 | t=c->shared_state.texture_hash_table[i]; |
||
| 79 | while (t!=NULL) { |
||
| 80 | if (t->handle>max) max=t->handle; |
||
| 81 | t=t->next; |
||
| 82 | } |
||
| 83 | |||
| 84 | } |
||
| 85 | for(i=0;i |
||
| 86 | textures[i]=max+i+1; |
||
| 87 | } |
||
| 88 | } |
||
| 89 | |||
| 90 | |||
| 91 | void glDeleteTextures(int n, const unsigned int *textures) |
||
| 92 | { |
||
| 93 | GLContext *c=gl_get_context(); |
||
| 94 | int i; |
||
| 95 | GLTexture *t; |
||
| 96 | |||
| 97 | for(i=0;i |
||
| 98 | t=find_texture(c,textures[i]); |
||
| 99 | if (t!=NULL && t!=0) { |
||
| 100 | if (t==c->current_texture) { |
||
| 101 | glBindTexture(GL_TEXTURE_2D,0); |
||
| 102 | } |
||
| 103 | free_texture(c,textures[i]); |
||
| 104 | } |
||
| 105 | } |
||
| 106 | } |
||
| 107 | |||
| 108 | |||
| 109 | void glopBindTexture(GLContext *c,GLParam *p) |
||
| 110 | { |
||
| 111 | int target=p[1].i; |
||
| 112 | int texture=p[2].i; |
||
| 113 | GLTexture *t; |
||
| 114 | |||
| 115 | assert(target == GL_TEXTURE_2D && texture >= 0); |
||
| 116 | |||
| 117 | t=find_texture(c,texture); |
||
| 118 | if (t==NULL) { |
||
| 119 | t=alloc_texture(c,texture); |
||
| 120 | } |
||
| 121 | c->current_texture=t; |
||
| 122 | } |
||
| 123 | |||
| 124 | void glopTexImage2D(GLContext *c,GLParam *p) |
||
| 125 | { |
||
| 126 | int target=p[1].i; |
||
| 127 | int level=p[2].i; |
||
| 128 | int components=p[3].i; |
||
| 129 | int width=p[4].i; |
||
| 130 | int height=p[5].i; |
||
| 131 | int border=p[6].i; |
||
| 132 | int format=p[7].i; |
||
| 133 | int type=p[8].i; |
||
| 134 | void *pixels=p[9].p; |
||
| 135 | GLImage *im; |
||
| 136 | unsigned char *pixels1; |
||
| 137 | int do_free; |
||
| 138 | |||
| 139 | if (!(target == GL_TEXTURE_2D && level == 0 && components == 3 && |
||
| 140 | border == 0 && format == GL_RGB && |
||
| 141 | type == GL_UNSIGNED_BYTE)) { |
||
| 142 | gl_fatal_error("glTexImage2D: combinaison of parameters not handled"); |
||
| 143 | } |
||
| 144 | |||
| 145 | do_free=0; |
||
| 146 | if (width != 256 || height != 256) { |
||
| 147 | pixels1 = gl_malloc(256 * 256 * 3); |
||
| 148 | /* no interpolation is done here to respect the original image aliasing ! */ |
||
| 149 | gl_resizeImageNoInterpolate(pixels1,256,256,pixels,width,height); |
||
| 150 | do_free=1; |
||
| 151 | width=256; |
||
| 152 | height=256; |
||
| 153 | } else { |
||
| 154 | pixels1=pixels; |
||
| 155 | } |
||
| 156 | |||
| 157 | im=&c->current_texture->images[level]; |
||
| 158 | im->xsize=width; |
||
| 159 | im->ysize=height; |
||
| 160 | if (im->pixmap!=NULL) gl_free(im->pixmap); |
||
| 161 | #if TGL_FEATURE_RENDER_BITS == 24 |
||
| 162 | im->pixmap=gl_malloc(width*height*3); |
||
| 163 | if(im->pixmap) { |
||
| 164 | memcpy(im->pixmap,pixels1,width*height*3); |
||
| 165 | } |
||
| 166 | #elif TGL_FEATURE_RENDER_BITS == 32 |
||
| 167 | im->pixmap=gl_malloc(width*height*4); |
||
| 168 | if(im->pixmap) { |
||
| 169 | gl_convertRGB_to_8A8R8G8B(im->pixmap,pixels1,width,height); |
||
| 170 | } |
||
| 171 | #elif TGL_FEATURE_RENDER_BITS == 16 |
||
| 172 | im->pixmap=gl_malloc(width*height*2); |
||
| 173 | if(im->pixmap) { |
||
| 174 | gl_convertRGB_to_5R6G5B(im->pixmap,pixels1,width,height); |
||
| 175 | } |
||
| 176 | #else |
||
| 177 | #error TODO |
||
| 178 | #endif |
||
| 179 | if (do_free) gl_free(pixels1); |
||
| 180 | } |
||
| 181 | |||
| 182 | |||
| 183 | /* TODO: not all tests are done */ |
||
| 184 | void glopTexEnv(GLContext *c,GLParam *p) |
||
| 185 | { |
||
| 186 | int target=p[1].i; |
||
| 187 | int pname=p[2].i; |
||
| 188 | int param=p[3].i; |
||
| 189 | |||
| 190 | if (target != GL_TEXTURE_ENV) { |
||
| 191 | error: |
||
| 192 | gl_fatal_error("glTexParameter: unsupported option"); |
||
| 193 | } |
||
| 194 | |||
| 195 | if (pname != GL_TEXTURE_ENV_MODE) goto error; |
||
| 196 | |||
| 197 | if (param != GL_DECAL) goto error; |
||
| 198 | } |
||
| 199 | |||
| 200 | /* TODO: not all tests are done */ |
||
| 201 | void glopTexParameter(GLContext *c,GLParam *p) |
||
| 202 | { |
||
| 203 | int target=p[1].i; |
||
| 204 | int pname=p[2].i; |
||
| 205 | int param=p[3].i; |
||
| 206 | |||
| 207 | if (target != GL_TEXTURE_2D) { |
||
| 208 | error: |
||
| 209 | gl_fatal_error("glTexParameter: unsupported option"); |
||
| 210 | } |
||
| 211 | |||
| 212 | switch(pname) { |
||
| 213 | case GL_TEXTURE_WRAP_S: |
||
| 214 | case GL_TEXTURE_WRAP_T: |
||
| 215 | if (param != GL_REPEAT) goto error; |
||
| 216 | break; |
||
| 217 | } |
||
| 218 | } |
||
| 219 | |||
| 220 | void glopPixelStore(GLContext *c,GLParam *p) |
||
| 221 | { |
||
| 222 | int pname=p[1].i; |
||
| 223 | int param=p[2].i; |
||
| 224 | |||
| 225 | if (pname != GL_UNPACK_ALIGNMENT || |
||
| 226 | param != 1) { |
||
| 227 | gl_fatal_error("glPixelStore: unsupported option"); |
||
| 228 | } |
||
| 229 | } |