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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#include "anim/animplay.h"
#include "anim/packunpack.h"
#include "cmdline/cmdline.h"
#include "ddsutils/ddsutils.h"
#include "globalincs/systemvars.h"
#include "graphics/gropenglbmpman.h"
#include "graphics/gropenglextension.h"
#include "graphics/gropenglstate.h"
#include "graphics/gropengltexture.h"
#include "jpgutils/jpgutils.h"
#include "pcxutils/pcxutils.h"
#include "pngutils/pngutils.h"
#include "tgautils/tgautils.h"
#define BMPMAN_INTERNAL
#include "bmpman/bm_internal.h"
static inline int is_power_of_two(int w, int h)
{
// NOTE: OpenGL texture code has a min tex size of 16 (currently), so we need to be at least
// the min size here to qualify as power-of-2 and not get resized later on
return ( ((w >= GL_min_texture_width) && !(w & (w-1))) && ((h >= GL_min_texture_height) && !(h & (h-1))) );
}
int get_num_mipmap_levels(int w, int h)
{
int size, levels = 0;
// make sure we can and should generate mipmaps before trying to use them
if ( !Cmdline_mipmap || !Is_Extension_Enabled(OGL_SGIS_GENERATE_MIPMAP) )
return 1;
size = MAX(w, h);
while (size > 0) {
size >>= 1;
levels++;
}
return (levels > 1) ? levels : 1;
}
/**
* Anything API specific to freeing bm data
*/
void gr_opengl_bm_free_data(int n, bool release)
{
Assert( (n >= 0) && (n < MAX_BITMAPS) );
// might as well free up the on card texture data too in order to get rid
// of old interface stuff but don't free USER types, unless it's a total release,
// since we can reuse ANI slots for faster and less resource intensive rendering
if ( release || (bm_bitmaps[n].type != BM_TYPE_USER) )
opengl_free_texture_slot( n );
if ( (bm_bitmaps[n].type == BM_TYPE_RENDER_TARGET_STATIC) || (bm_bitmaps[n].type == BM_TYPE_RENDER_TARGET_DYNAMIC) )
opengl_kill_render_target( n );
}
/**
* API specifics for creating a user bitmap
*/
void gr_opengl_bm_create(int n)
{
Assert( (n >= 0) && (n < MAX_BITMAPS) );
}
/**
* API specific init instructions
*/
void gr_opengl_bm_init(int n)
{
Assert( (n >= 0) && (n < MAX_BITMAPS) );
}
/**
* Specific instructions for setting up the start of a page-in session
*/
void gr_opengl_bm_page_in_start()
{
opengl_preload_init();
}
extern void bm_clean_slot(int n);
extern bool opengl_texture_slot_valid(int n, int handle);
void gr_opengl_bm_save_render_target(int n)
{
Assert( (n >= 0) && (n < MAX_BITMAPS) );
if ( !Is_Extension_Enabled(OGL_EXT_FRAMEBUFFER_OBJECT) || Cmdline_no_fbo ) {
return;
}
bitmap_entry *be = &bm_bitmaps[n];
bitmap *bmp = &be->bm;
size_t rc = opengl_export_render_target( n, bmp->w, bmp->h, (bmp->true_bpp == 32), be->num_mipmaps, (ubyte*)bmp->data );
if (rc != be->mem_taken) {
Int3();
return;
}
if (Cmdline_save_render_targets) {
dds_save_image(bmp->w, bmp->h, bmp->true_bpp, be->num_mipmaps, (ubyte*)bmp->data, (bmp->flags & BMP_FLAG_CUBEMAP));
}
}
int gr_opengl_bm_make_render_target(int n, int *width, int *height, ubyte *bpp, int *mm_lvl, int flags)
{
Assert( (n >= 0) && (n < MAX_BITMAPS) );
if ( !Is_Extension_Enabled(OGL_EXT_FRAMEBUFFER_OBJECT) || Cmdline_no_fbo ) {
return 0;
}
if ( (flags & BMP_FLAG_CUBEMAP) && !Is_Extension_Enabled(OGL_ARB_TEXTURE_CUBE_MAP) ) {
return 0;
}
if ( (flags & BMP_FLAG_CUBEMAP) && (*width != *height) ) {
MIN(*width, *height) = MAX(*width, *height);
}
// Only enforce power of two size if not supported
if (!(Is_Extension_Enabled(OGL_ARB_TEXTURE_NON_POWER_OF_TWO)))
{
Assert( is_power_of_two(*width, *height) );
}
if ( opengl_make_render_target(bm_bitmaps[n].handle, n, width, height, bpp, mm_lvl, flags) ) {
return 1;
}
return 0;
}
int gr_opengl_bm_set_render_target(int n, int face)
{
if ( !Is_Extension_Enabled(OGL_EXT_FRAMEBUFFER_OBJECT) || Cmdline_no_fbo ) {
return 0;
}
if (n == -1) {
opengl_set_render_target(-1);
return 1;
}
Assert( (n >= 0) && (n < MAX_BITMAPS) );
int is_static = (bm_bitmaps[n].type == BM_TYPE_RENDER_TARGET_STATIC);
if ( opengl_set_render_target(n, face, is_static) ) {
return 1;
}
return 0;
}
bool gr_opengl_bm_data(int n, bitmap* bm)
{
// Do nothing here
return true;
}
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