2 * Copyright (C) Volition, Inc. 1999. All rights reserved.
4 * All source code herein is the property of Volition, Inc. You may not sell
5 * or otherwise commercially exploit the source or things you created based on
13 #include "gropenglinternal.h"
15 #include "grinternal.h"
16 #include "systemvars.h"
17 #include "osregistry.h"
22 typedef struct tcache_slot_opengl {
23 GLuint texture_handle;
24 float u_scale, v_scale;
32 tcache_slot_opengl *data_sections[MAX_BMAP_SECTIONS_X][MAX_BMAP_SECTIONS_Y];
33 tcache_slot_opengl *parent;
35 gr_texture_source texture_mode;
38 static void *Texture_sections = NULL;
39 static tcache_slot_opengl *Textures = NULL;
41 static tcache_slot_opengl *GL_bound_texture;
43 static int GL_frame_count = 0;
44 static int GL_last_bitmap_id = -1;
45 static int GL_last_detail = -1;
46 static int GL_last_bitmap_type = -1;
47 static int GL_last_section_x = -1;
48 static int GL_last_section_y = -1;
49 static int GL_should_preload = 0;
51 extern int Gr_textures_in;
53 static gr_texture_source GL_current_texture_source = (gr_texture_source) -1;
55 static ubyte GL_xlat[256] = { 0 };
57 extern int bm_get_cache_slot( int bitmap_id, int separate_ani_frames );
60 void opengl1_set_texture_state(gr_texture_source ts)
62 if (ts == TEXTURE_SOURCE_NONE) {
63 GL_bound_texture = NULL;
65 glBindTexture(GL_TEXTURE_2D, 0);
66 opengl1_tcache_set(-1, -1, NULL, NULL, 0, -1, -1, 0 );
67 } else if (GL_bound_texture &&
68 GL_bound_texture->texture_mode != ts) {
70 case TEXTURE_SOURCE_DECAL:
71 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
72 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
74 case TEXTURE_SOURCE_NO_FILTERING:
75 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
76 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
82 GL_bound_texture->texture_mode = ts;
85 GL_current_texture_source = ts;
89 void opengl1_tcache_init()
93 uint tmp_pl = os_config_read_uint( NULL, NOX("PreloadTextures"), 1 );
96 GL_should_preload = 1;
98 GL_should_preload = 0;
101 Textures = (tcache_slot_opengl *)malloc(MAX_BITMAPS*sizeof(tcache_slot_opengl));
106 if (gr_screen.use_sections) {
107 Texture_sections = (tcache_slot_opengl*)malloc(MAX_BITMAPS * MAX_BMAP_SECTIONS_X * MAX_BMAP_SECTIONS_Y * sizeof(tcache_slot_opengl));
108 if(!Texture_sections){
111 memset(Texture_sections, 0, MAX_BITMAPS * MAX_BMAP_SECTIONS_X * MAX_BMAP_SECTIONS_Y * sizeof(tcache_slot_opengl));
114 // Init the texture structures
115 int section_count = 0;
116 for( i=0; i<MAX_BITMAPS; i++ ) {
117 Textures[i].texture_handle = 0;
119 Textures[i].bitmap_id = -1;
120 Textures[i].size = 0;
121 Textures[i].used_this_frame = 0;
123 Textures[i].parent = NULL;
126 if (gr_screen.use_sections) {
127 for(idx=0; idx<MAX_BMAP_SECTIONS_X; idx++){
128 for(s_idx=0; s_idx<MAX_BMAP_SECTIONS_Y; s_idx++){
129 Textures[i].data_sections[idx][s_idx] = &((tcache_slot_opengl*)Texture_sections)[section_count++];
130 Textures[i].data_sections[idx][s_idx]->parent = &Textures[i];
131 Textures[i].data_sections[idx][s_idx]->texture_handle = 0;
132 Textures[i].data_sections[idx][s_idx]->bitmap_id = -1;
133 Textures[i].data_sections[idx][s_idx]->size = 0;
134 Textures[i].data_sections[idx][s_idx]->used_this_frame = 0;
138 for(idx=0; idx<MAX_BMAP_SECTIONS_X; idx++){
139 for(s_idx=0; s_idx<MAX_BMAP_SECTIONS_Y; s_idx++){
140 Textures[i].data_sections[idx][s_idx] = NULL;
146 GL_last_detail = Detail.hardware_textures;
147 GL_last_bitmap_id = -1;
148 GL_last_bitmap_type = -1;
150 GL_last_section_x = -1;
151 GL_last_section_y = -1;
154 static int opengl1_free_texture ( tcache_slot_opengl *t )
160 if ( t->bitmap_id > -1 ) {
161 // if I, or any of my children have been used this frame, bail
162 if(t->used_this_frame == GL_frame_count){
166 if (gr_screen.use_sections) {
167 for(idx=0; idx<MAX_BMAP_SECTIONS_X; idx++){
168 for(s_idx=0; s_idx<MAX_BMAP_SECTIONS_Y; s_idx++){
169 if((t->data_sections[idx][s_idx] != NULL) && (t->data_sections[idx][s_idx]->used_this_frame == GL_frame_count)){
176 // ok, now we know its legal to free everything safely
177 t->texture_mode = (gr_texture_source) -1;
178 glDeleteTextures (1, &t->texture_handle);
179 t->texture_handle = 0;
181 if ( GL_last_bitmap_id == t->bitmap_id ) {
182 GL_last_bitmap_id = -1;
185 // if this guy has children, free them too, since the children
186 // actually make up his size
187 if (gr_screen.use_sections) {
188 for(idx=0; idx<MAX_BMAP_SECTIONS_X; idx++){
189 for(s_idx=0; s_idx<MAX_BMAP_SECTIONS_Y; s_idx++){
190 if(t->data_sections[idx][s_idx] != NULL){
191 opengl1_free_texture(t->data_sections[idx][s_idx]);
198 t->used_this_frame = 0;
199 Gr_textures_in -= t->size;
206 void opengl1_free_texture_with_handle(int handle)
208 for(int i=0; i<MAX_BITMAPS; i++ ) {
209 if (Textures[i].bitmap_id == handle) {
210 Textures[i].used_this_frame = 0; // this bmp doesn't even exist any longer...
211 opengl1_free_texture ( &Textures[i] );
216 void opengl1_tcache_flush()
220 for( i=0; i<MAX_BITMAPS; i++ ) {
221 opengl1_free_texture ( &Textures[i] );
223 if (Gr_textures_in != 0) {
224 mprintf(( "WARNING: VRAM is at %d instead of zero after flushing!\n", Gr_textures_in ));
228 GL_last_bitmap_id = -1;
229 GL_last_section_x = -1;
230 GL_last_section_y = -1;
233 void opengl1_tcache_cleanup()
235 opengl1_tcache_flush ();
242 if( Texture_sections != NULL ){
243 free(Texture_sections);
244 Texture_sections = NULL;
248 void opengl1_tcache_frame()
250 GL_last_bitmap_id = -1;
257 for( i=0; i<MAX_BITMAPS; i++ ) {
258 Textures[i].used_this_frame = 0;
261 if(Textures[i].data_sections[0][0] != NULL){
262 SDL_assert(GL_texture_sections);
263 if(GL_texture_sections){
264 for(idx=0; idx<MAX_BMAP_SECTIONS_X; idx++){
265 for(s_idx=0; s_idx<MAX_BMAP_SECTIONS_Y; s_idx++){
266 if(Textures[i].data_sections[idx][s_idx] != NULL){
267 Textures[i].data_sections[idx][s_idx]->used_this_frame = 0;
277 opengl1_tcache_flush();
282 static void opengl1_tcache_get_adjusted_texture_size(int w_in, int h_in, int *w_out, int *h_out)
288 if((w_out == NULL) || (h_out == NULL)){
296 // set height and width to a power of 2
297 for (i=0; i<16; i++ ) {
298 if ( (tex_w > (1<<i)) && (tex_w <= (1<<(i+1))) ) {
304 for (i=0; i<16; i++ ) {
305 if ( (tex_h > (1<<i)) && (tex_h <= (1<<(i+1))) ) {
311 // try to keep an 8:1 size ratio
317 if ( tex_w < GL_min_texture_width ) {
318 tex_w = GL_min_texture_width;
319 } else if ( tex_w > GL_max_texture_width ) {
320 tex_w = GL_max_texture_width;
323 if ( tex_h < GL_min_texture_height ) {
324 tex_h = GL_min_texture_height;
325 } else if ( tex_h > GL_max_texture_height ) {
326 tex_h = GL_max_texture_height;
329 // store the outgoing size
334 // data == start of bitmap data
335 // sx == x offset into bitmap
336 // sy == y offset into bitmap
337 // src_w == absolute width of section on source bitmap
338 // src_h == absolute height of section on source bitmap
339 // bmap_w == width of source bitmap
340 // bmap_h == height of source bitmap
341 // tex_w == width of final texture
342 // tex_h == height of final texture
343 static int opengl1_create_texture_sub(int bitmap_type, int texture_handle, ushort *data, int sx, int sy, int src_w, int src_h, int bmap_w, int bmap_h, int tex_w, int tex_h, tcache_slot_opengl *t, int reload, int resize, int fail_on_full)
348 ubyte *bmp_data = ((ubyte*)data);
349 ubyte *texmem = NULL, *texmemp;
352 if((t == NULL) || (bmp_data == NULL)){
356 if ( t->used_this_frame == GL_frame_count ) {
357 mprintf(( "ARGHH!!! Texture already used this frame! Cannot free it!\n" ));
362 if(!opengl1_free_texture(t)){
367 switch (bitmap_type) {
368 case TCACHE_TYPE_AABITMAP:
369 t->u_scale = (float)bmap_w / (float)tex_w;
370 t->v_scale = (float)bmap_h / (float)tex_h;
373 case TCACHE_TYPE_BITMAP_INTERFACE:
374 case TCACHE_TYPE_BITMAP_SECTION:
375 t->u_scale = (float)src_w / (float)tex_w;
376 t->v_scale = (float)src_h / (float)tex_h;
386 glGenTextures (1, &t->texture_handle);
389 if (t->texture_handle == 0) {
390 nprintf(("Error", "!!DEBUG!! t->texture_handle == 0"));
394 GL_bound_texture = t;
396 GL_bound_texture->texture_mode = (gr_texture_source) -1;
398 glBindTexture (GL_TEXTURE_2D, t->texture_handle);
400 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
401 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
402 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
404 /* this should be set next anyway */
405 // if (GL_current_texture_source != TEXTURE_SOURCE_NONE) {
406 // gr_opengl_set_texture_state(GL_current_texture_source);
409 switch (bitmap_type) {
410 case TCACHE_TYPE_AABITMAP:
412 texmem = (ubyte *) malloc (tex_w*tex_h);
415 for (i=0;i<tex_h;i++)
417 for (j=0;j<tex_w;j++)
419 if (i < bmap_h && j < bmap_w) {
420 *texmemp++ = GL_xlat[bmp_data[i*bmap_w+j]];
430 glTexImage2D (GL_TEXTURE_2D, 0, GL_ALPHA, tex_w, tex_h, 0, GL_ALPHA, GL_UNSIGNED_BYTE, texmem);
432 glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, tex_w, tex_h, GL_ALPHA, GL_UNSIGNED_BYTE, texmem);
440 case TCACHE_TYPE_BITMAP_INTERFACE:
441 case TCACHE_TYPE_BITMAP_SECTION:
443 // if we aren't resizing in any way then we can just use bmp_data directly
445 texmem = (ubyte *) malloc (tex_w*tex_h*2);
448 for (i=0;i<tex_h;i++) {
449 for (j=0;j<tex_w;j++) {
450 if (i < src_h && j < src_w) {
451 *texmemp++ = bmp_data[((i+sy)*bmap_w+(j+sx))*2+0];
452 *texmemp++ = bmp_data[((i+sy)*bmap_w+(j+sx))*2+1];
461 size = tex_w*tex_h*2;
464 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, tex_w, tex_h, 0, GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV, (resize) ? texmem : bmp_data);
466 glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, tex_w, tex_h, GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV, (resize) ? texmem : bmp_data);
477 // if we aren't resizing then we can just use bmp_data directly
479 texmem = (ubyte *) malloc (tex_w*tex_h*2);
482 SDL_assert( texmem != NULL );
484 fix u, utmp, v, du, dv;
488 du = ( (bmap_w-1)*F1_0 ) / tex_w;
489 dv = ( (bmap_h-1)*F1_0 ) / tex_h;
491 for (j=0;j<tex_h;j++) {
493 for (i=0;i<tex_w;i++) {
494 *texmemp++ = bmp_data[(f2i(v)*bmap_w+f2i(utmp))*2+0];
495 *texmemp++ = bmp_data[(f2i(v)*bmap_w+f2i(utmp))*2+1];
502 size = tex_w*tex_h*2;
505 glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, tex_w, tex_h, 0, GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV, (resize) ? texmem : bmp_data);
507 glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, tex_w, tex_h, GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV, (resize) ? texmem : bmp_data);
517 t->bitmap_id = texture_handle;
518 t->time_created = GL_frame_count;
519 t->used_this_frame = 0;
521 t->w = (ushort)tex_w;
522 t->h = (ushort)tex_h;
525 Gr_textures_in += t->size;
531 static int opengl1_create_texture(int bitmap_handle, int bitmap_type, tcache_slot_opengl *tslot, int fail_on_full)
535 int final_w, final_h;
541 // setup texture/bitmap flags
544 case TCACHE_TYPE_AABITMAP:
545 flags |= BMP_AABITMAP;
548 case TCACHE_TYPE_NORMAL:
549 flags |= BMP_TEX_OTHER;
552 case TCACHE_TYPE_BITMAP_INTERFACE:
553 case TCACHE_TYPE_XPARENT:
554 flags |= BMP_TEX_XPARENT;
561 // lock the bitmap into the proper format
562 bmp = bm_lock(bitmap_handle, bpp, flags);
564 mprintf(("Couldn't lock bitmap %d.\n", bitmap_handle ));
572 // if we are going to cull the size then we need to force a resize
573 if (Detail.hardware_textures < 4) {
576 // Detail.debris_culling goes from 0 to 4.
577 max_w /= (16 >> Detail.hardware_textures);
578 max_h /= (16 >> Detail.hardware_textures);
583 // get final texture size as it will be allocated as a DD surface
584 opengl1_tcache_get_adjusted_texture_size(max_w, max_h, &final_w, &final_h);
586 if ( (final_w < 1) || (final_h < 1) ) {
587 mprintf(("Bitmap is too small at %dx%d.\n", final_w, final_h));
591 // if we don't have to resize the image (to get power of 2, etc.) then skip that extra work
592 if ( (max_w != final_w) || (max_h != final_h) ) {
596 // if this tcache slot has no bitmap
597 if ( tslot->bitmap_id < 0) {
600 // different bitmap altogether - determine if the new one can use the old one's slot
601 else if (tslot->bitmap_id != bitmap_handle) {
602 if((final_w == tslot->w) && (final_h == tslot->h)){
604 //ml_printf("Reloading texture %d\n", bitmap_handle);
611 int ret_val = opengl1_create_texture_sub(bitmap_type, bitmap_handle, (ushort*)bmp->data, 0, 0, bmp->w, bmp->h, bmp->w, bmp->h, final_w, final_h, tslot, reload, resize, fail_on_full);
614 bm_unlock(bitmap_handle);
619 static int opengl1_create_texture_sectioned(int bitmap_handle, int bitmap_type, tcache_slot_opengl *tslot, int sx, int sy, int fail_on_full)
623 int final_w, final_h;
624 int section_x, section_y;
628 SDL_assert( gr_screen.use_sections );
630 // setup texture/bitmap flags
631 SDL_assert(bitmap_type == TCACHE_TYPE_BITMAP_SECTION);
632 if(bitmap_type != TCACHE_TYPE_BITMAP_SECTION){
633 bitmap_type = TCACHE_TYPE_BITMAP_SECTION;
635 flags = BMP_TEX_XPARENT;
637 // lock the bitmap in the proper format
638 bmp = bm_lock(bitmap_handle, 16, flags);
640 mprintf(("Couldn't lock bitmap %d.\n", bitmap_handle ));
643 // determine the width and height of this section
644 bm_get_section_size(bitmap_handle, sx, sy, §ion_x, §ion_y);
646 // get final texture size as it will be allocated as an opengl texture
647 opengl1_tcache_get_adjusted_texture_size(section_x, section_y, &final_w, &final_h);
649 if ( (final_w < 1) || (final_h < 1) ) {
650 mprintf(("Bitmap is too small at %dx%d.\n", final_w, final_h));
654 // if we don't have to resize the image (to get power of 2, etc.) then skip that extra work
655 if ( (bmp->sections.num_x == 1) && (bmp->sections.num_y == 1) && (section_x == final_w) && (section_y == final_h) ) {
659 // if this tcache slot has no bitmap
660 if ( tslot->bitmap_id < 0) {
663 // different bitmap altogether - determine if the new one can use the old one's slot
664 else if (tslot->bitmap_id != bitmap_handle) {
665 if((final_w == tslot->w) && (final_h == tslot->h)){
673 int ret_val = opengl1_create_texture_sub(bitmap_type, bitmap_handle, (ushort*)bmp->data, bmp->sections.sx[sx], bmp->sections.sy[sy], section_x, section_y, bmp->w, bmp->h, final_w, final_h, tslot, reload, resize, fail_on_full);
676 bm_unlock(bitmap_handle);
681 int opengl1_tcache_set(int bitmap_id, int bitmap_type, float *u_scale, float *v_scale, int fail_on_full, int sx, int sy, int force)
690 GL_last_bitmap_id = -1;
694 if ( GL_last_detail != Detail.hardware_textures ) {
695 GL_last_detail = Detail.hardware_textures;
696 opengl1_tcache_flush();
703 int n = bm_get_cache_slot (bitmap_id, 1);
704 tcache_slot_opengl *t = &Textures[n];
706 if ( (GL_last_bitmap_id == bitmap_id) && (GL_last_bitmap_type==bitmap_type) && (t->bitmap_id == bitmap_id) && (GL_last_section_x == sx) && (GL_last_section_y == sy)) {
707 t->used_this_frame = GL_frame_count;
709 // mark all children as used
710 if (gr_screen.use_sections) {
711 for(idx=0; idx<MAX_BMAP_SECTIONS_X; idx++){
712 for(s_idx=0; s_idx<MAX_BMAP_SECTIONS_Y; s_idx++){
713 if(t->data_sections[idx][s_idx] != NULL){
714 t->data_sections[idx][s_idx]->used_this_frame = GL_frame_count;
720 *u_scale = t->u_scale;
721 *v_scale = t->v_scale;
725 if (bitmap_type == TCACHE_TYPE_BITMAP_SECTION){
726 SDL_assert( gr_screen.use_sections );
727 SDL_assert((sx >= 0) && (sy >= 0) && (sx < MAX_BMAP_SECTIONS_X) && (sy < MAX_BMAP_SECTIONS_Y));
728 if(!((sx >= 0) && (sy >= 0) && (sx < MAX_BMAP_SECTIONS_X) && (sy < MAX_BMAP_SECTIONS_Y))){
734 // if the texture sections haven't been created yet
735 if((t->bitmap_id < 0) || (t->bitmap_id != bitmap_id)){
737 // lock the bitmap in the proper format
738 bmp = bm_lock(bitmap_id, 16, BMP_TEX_XPARENT);
739 bm_unlock(bitmap_id);
741 // now lets do something for each texture
743 for(idx=0; idx<bmp->sections.num_x; idx++){
744 for(s_idx=0; s_idx<bmp->sections.num_y; s_idx++){
745 // hmm. i'd rather we didn't have to do it this way...
746 if(!opengl1_create_texture_sectioned(bitmap_id, bitmap_type, t->data_sections[idx][s_idx], idx, s_idx, fail_on_full)){
750 // not used this frame
751 t->data_sections[idx][s_idx]->used_this_frame = 0;
755 // zero out pretty much everything in the parent struct since he's just the root
756 t->bitmap_id = bitmap_id;
757 t->texture_handle = 0;
758 t->time_created = t->data_sections[sx][sy]->time_created;
759 t->used_this_frame = 0;
762 // argh. we failed to upload. free anything we can
764 opengl1_free_texture(t);
766 // swap in the texture we want
768 t = t->data_sections[sx][sy];
771 // all other "normal" textures
772 else if((bitmap_id < 0) || (bitmap_id != t->bitmap_id)){
773 ret_val = opengl1_create_texture( bitmap_id, bitmap_type, t, fail_on_full );
776 // everything went ok
777 if(ret_val && (t->texture_handle) && !vram_full){
778 *u_scale = t->u_scale;
779 *v_scale = t->v_scale;
781 GL_bound_texture = t;
783 glBindTexture (GL_TEXTURE_2D, t->texture_handle );
785 /* this should be set next anyway */
786 // if (GL_current_texture_source != TEXTURE_SOURCE_NONE) {
787 // gr_opengl_set_texture_state(GL_current_texture_source);
790 GL_last_bitmap_id = t->bitmap_id;
791 GL_last_bitmap_type = bitmap_type;
792 GL_last_section_x = sx;
793 GL_last_section_y = sy;
795 t->used_this_frame = GL_frame_count;
799 GL_last_bitmap_id = -1;
800 GL_last_bitmap_type = -1;
802 GL_last_section_x = -1;
803 GL_last_section_y = -1;
805 GL_bound_texture = NULL;
807 glBindTexture (GL_TEXTURE_2D, 0); // test - DDOI
814 void gr_opengl1_preload_init()
816 // if (gr_screen.mode != GR_OPENGL) {
820 opengl1_tcache_flush();
823 int gr_opengl1_preload(int bitmap_num, int is_aabitmap)
825 // if ( gr_screen.mode != GR_OPENGL) {
829 if ( !GL_should_preload ) {
833 float u_scale, v_scale;
835 int bitmap_type = TCACHE_TYPE_NORMAL;
838 bitmap_type = TCACHE_TYPE_AABITMAP;
841 retval = opengl1_tcache_set(bitmap_num, bitmap_type, &u_scale, &v_scale, 1, -1, -1, 0 );
844 mprintf(("Texture upload failed!\n" ));
850 void gr_opengl1_set_gamma(float gamma)
853 Gr_gamma_int = int (Gr_gamma*10);
855 // Create the Gamma lookup table
857 for (i=0;i<256; i++) {
858 int v = fl2i(pow(i2fl(i)/255.0f, 1.0f/Gr_gamma)*255.0f);
861 } else if ( v < 0 ) {
864 Gr_gamma_lookup[i] = v;
867 // set the alpha gamma settings (for fonts)
868 for (i=0; i<16; i++) {
869 GL_xlat[i] = (ubyte)Gr_gamma_lookup[(i*255)/15];
872 GL_xlat[15] = GL_xlat[1];
875 GL_xlat[i] = GL_xlat[0];
878 // Flush any existing textures
879 opengl1_tcache_flush();